LCOV - code coverage report
Current view: top level - media/libvpx/libvpx/vp9/encoder - vp9_rdopt.c (source / functions) Hit Total Coverage
Test: output.info Lines: 0 2242 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 49 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #include <assert.h>
      12             : #include <math.h>
      13             : 
      14             : #include "./vp9_rtcd.h"
      15             : #include "./vpx_dsp_rtcd.h"
      16             : 
      17             : #include "vpx_dsp/vpx_dsp_common.h"
      18             : #include "vpx_mem/vpx_mem.h"
      19             : #include "vpx_ports/mem.h"
      20             : #include "vpx_ports/system_state.h"
      21             : 
      22             : #include "vp9/common/vp9_common.h"
      23             : #include "vp9/common/vp9_entropy.h"
      24             : #include "vp9/common/vp9_entropymode.h"
      25             : #include "vp9/common/vp9_idct.h"
      26             : #include "vp9/common/vp9_mvref_common.h"
      27             : #include "vp9/common/vp9_pred_common.h"
      28             : #include "vp9/common/vp9_quant_common.h"
      29             : #include "vp9/common/vp9_reconinter.h"
      30             : #include "vp9/common/vp9_reconintra.h"
      31             : #include "vp9/common/vp9_scan.h"
      32             : #include "vp9/common/vp9_seg_common.h"
      33             : 
      34             : #include "vp9/encoder/vp9_cost.h"
      35             : #include "vp9/encoder/vp9_encodemb.h"
      36             : #include "vp9/encoder/vp9_encodemv.h"
      37             : #include "vp9/encoder/vp9_encoder.h"
      38             : #include "vp9/encoder/vp9_mcomp.h"
      39             : #include "vp9/encoder/vp9_quantize.h"
      40             : #include "vp9/encoder/vp9_ratectrl.h"
      41             : #include "vp9/encoder/vp9_rd.h"
      42             : #include "vp9/encoder/vp9_rdopt.h"
      43             : #include "vp9/encoder/vp9_aq_variance.h"
      44             : 
      45             : #define LAST_FRAME_MODE_MASK \
      46             :   ((1 << GOLDEN_FRAME) | (1 << ALTREF_FRAME) | (1 << INTRA_FRAME))
      47             : #define GOLDEN_FRAME_MODE_MASK \
      48             :   ((1 << LAST_FRAME) | (1 << ALTREF_FRAME) | (1 << INTRA_FRAME))
      49             : #define ALT_REF_MODE_MASK \
      50             :   ((1 << LAST_FRAME) | (1 << GOLDEN_FRAME) | (1 << INTRA_FRAME))
      51             : 
      52             : #define SECOND_REF_FRAME_MASK ((1 << ALTREF_FRAME) | 0x01)
      53             : 
      54             : #define MIN_EARLY_TERM_INDEX 3
      55             : #define NEW_MV_DISCOUNT_FACTOR 8
      56             : 
      57             : typedef struct {
      58             :   PREDICTION_MODE mode;
      59             :   MV_REFERENCE_FRAME ref_frame[2];
      60             : } MODE_DEFINITION;
      61             : 
      62             : typedef struct { MV_REFERENCE_FRAME ref_frame[2]; } REF_DEFINITION;
      63             : 
      64             : struct rdcost_block_args {
      65             :   const VP9_COMP *cpi;
      66             :   MACROBLOCK *x;
      67             :   ENTROPY_CONTEXT t_above[16];
      68             :   ENTROPY_CONTEXT t_left[16];
      69             :   int this_rate;
      70             :   int64_t this_dist;
      71             :   int64_t this_sse;
      72             :   int64_t this_rd;
      73             :   int64_t best_rd;
      74             :   int exit_early;
      75             :   int use_fast_coef_costing;
      76             :   const scan_order *so;
      77             :   uint8_t skippable;
      78             : };
      79             : 
      80             : #define LAST_NEW_MV_INDEX 6
      81             : static const MODE_DEFINITION vp9_mode_order[MAX_MODES] = {
      82             :   { NEARESTMV, { LAST_FRAME, NONE } },
      83             :   { NEARESTMV, { ALTREF_FRAME, NONE } },
      84             :   { NEARESTMV, { GOLDEN_FRAME, NONE } },
      85             : 
      86             :   { DC_PRED, { INTRA_FRAME, NONE } },
      87             : 
      88             :   { NEWMV, { LAST_FRAME, NONE } },
      89             :   { NEWMV, { ALTREF_FRAME, NONE } },
      90             :   { NEWMV, { GOLDEN_FRAME, NONE } },
      91             : 
      92             :   { NEARMV, { LAST_FRAME, NONE } },
      93             :   { NEARMV, { ALTREF_FRAME, NONE } },
      94             :   { NEARMV, { GOLDEN_FRAME, NONE } },
      95             : 
      96             :   { ZEROMV, { LAST_FRAME, NONE } },
      97             :   { ZEROMV, { GOLDEN_FRAME, NONE } },
      98             :   { ZEROMV, { ALTREF_FRAME, NONE } },
      99             : 
     100             :   { NEARESTMV, { LAST_FRAME, ALTREF_FRAME } },
     101             :   { NEARESTMV, { GOLDEN_FRAME, ALTREF_FRAME } },
     102             : 
     103             :   { TM_PRED, { INTRA_FRAME, NONE } },
     104             : 
     105             :   { NEARMV, { LAST_FRAME, ALTREF_FRAME } },
     106             :   { NEWMV, { LAST_FRAME, ALTREF_FRAME } },
     107             :   { NEARMV, { GOLDEN_FRAME, ALTREF_FRAME } },
     108             :   { NEWMV, { GOLDEN_FRAME, ALTREF_FRAME } },
     109             : 
     110             :   { ZEROMV, { LAST_FRAME, ALTREF_FRAME } },
     111             :   { ZEROMV, { GOLDEN_FRAME, ALTREF_FRAME } },
     112             : 
     113             :   { H_PRED, { INTRA_FRAME, NONE } },
     114             :   { V_PRED, { INTRA_FRAME, NONE } },
     115             :   { D135_PRED, { INTRA_FRAME, NONE } },
     116             :   { D207_PRED, { INTRA_FRAME, NONE } },
     117             :   { D153_PRED, { INTRA_FRAME, NONE } },
     118             :   { D63_PRED, { INTRA_FRAME, NONE } },
     119             :   { D117_PRED, { INTRA_FRAME, NONE } },
     120             :   { D45_PRED, { INTRA_FRAME, NONE } },
     121             : };
     122             : 
     123             : static const REF_DEFINITION vp9_ref_order[MAX_REFS] = {
     124             :   { { LAST_FRAME, NONE } },           { { GOLDEN_FRAME, NONE } },
     125             :   { { ALTREF_FRAME, NONE } },         { { LAST_FRAME, ALTREF_FRAME } },
     126             :   { { GOLDEN_FRAME, ALTREF_FRAME } }, { { INTRA_FRAME, NONE } },
     127             : };
     128             : 
     129           0 : static void swap_block_ptr(MACROBLOCK *x, PICK_MODE_CONTEXT *ctx, int m, int n,
     130             :                            int min_plane, int max_plane) {
     131             :   int i;
     132             : 
     133           0 :   for (i = min_plane; i < max_plane; ++i) {
     134           0 :     struct macroblock_plane *const p = &x->plane[i];
     135           0 :     struct macroblockd_plane *const pd = &x->e_mbd.plane[i];
     136             : 
     137           0 :     p->coeff = ctx->coeff_pbuf[i][m];
     138           0 :     p->qcoeff = ctx->qcoeff_pbuf[i][m];
     139           0 :     pd->dqcoeff = ctx->dqcoeff_pbuf[i][m];
     140           0 :     p->eobs = ctx->eobs_pbuf[i][m];
     141             : 
     142           0 :     ctx->coeff_pbuf[i][m] = ctx->coeff_pbuf[i][n];
     143           0 :     ctx->qcoeff_pbuf[i][m] = ctx->qcoeff_pbuf[i][n];
     144           0 :     ctx->dqcoeff_pbuf[i][m] = ctx->dqcoeff_pbuf[i][n];
     145           0 :     ctx->eobs_pbuf[i][m] = ctx->eobs_pbuf[i][n];
     146             : 
     147           0 :     ctx->coeff_pbuf[i][n] = p->coeff;
     148           0 :     ctx->qcoeff_pbuf[i][n] = p->qcoeff;
     149           0 :     ctx->dqcoeff_pbuf[i][n] = pd->dqcoeff;
     150           0 :     ctx->eobs_pbuf[i][n] = p->eobs;
     151             :   }
     152           0 : }
     153             : 
     154           0 : static void model_rd_for_sb(VP9_COMP *cpi, BLOCK_SIZE bsize, MACROBLOCK *x,
     155             :                             MACROBLOCKD *xd, int *out_rate_sum,
     156             :                             int64_t *out_dist_sum, int *skip_txfm_sb,
     157             :                             int64_t *skip_sse_sb) {
     158             :   // Note our transform coeffs are 8 times an orthogonal transform.
     159             :   // Hence quantizer step is also 8 times. To get effective quantizer
     160             :   // we need to divide by 8 before sending to modeling function.
     161             :   int i;
     162           0 :   int64_t rate_sum = 0;
     163           0 :   int64_t dist_sum = 0;
     164           0 :   const int ref = xd->mi[0]->ref_frame[0];
     165             :   unsigned int sse;
     166           0 :   unsigned int var = 0;
     167           0 :   unsigned int sum_sse = 0;
     168           0 :   int64_t total_sse = 0;
     169           0 :   int skip_flag = 1;
     170           0 :   const int shift = 6;
     171             :   int rate;
     172             :   int64_t dist;
     173           0 :   const int dequant_shift =
     174             : #if CONFIG_VP9_HIGHBITDEPTH
     175             :       (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) ? xd->bd - 5 :
     176             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     177             :                                                     3;
     178             : 
     179           0 :   x->pred_sse[ref] = 0;
     180             : 
     181           0 :   for (i = 0; i < MAX_MB_PLANE; ++i) {
     182           0 :     struct macroblock_plane *const p = &x->plane[i];
     183           0 :     struct macroblockd_plane *const pd = &xd->plane[i];
     184           0 :     const BLOCK_SIZE bs = get_plane_block_size(bsize, pd);
     185           0 :     const TX_SIZE max_tx_size = max_txsize_lookup[bs];
     186           0 :     const BLOCK_SIZE unit_size = txsize_to_bsize[max_tx_size];
     187           0 :     const int64_t dc_thr = p->quant_thred[0] >> shift;
     188           0 :     const int64_t ac_thr = p->quant_thred[1] >> shift;
     189             :     // The low thresholds are used to measure if the prediction errors are
     190             :     // low enough so that we can skip the mode search.
     191           0 :     const int64_t low_dc_thr = VPXMIN(50, dc_thr >> 2);
     192           0 :     const int64_t low_ac_thr = VPXMIN(80, ac_thr >> 2);
     193           0 :     int bw = 1 << (b_width_log2_lookup[bs] - b_width_log2_lookup[unit_size]);
     194           0 :     int bh = 1 << (b_height_log2_lookup[bs] - b_width_log2_lookup[unit_size]);
     195             :     int idx, idy;
     196           0 :     int lw = b_width_log2_lookup[unit_size] + 2;
     197           0 :     int lh = b_height_log2_lookup[unit_size] + 2;
     198             : 
     199           0 :     sum_sse = 0;
     200             : 
     201           0 :     for (idy = 0; idy < bh; ++idy) {
     202           0 :       for (idx = 0; idx < bw; ++idx) {
     203           0 :         uint8_t *src = p->src.buf + (idy * p->src.stride << lh) + (idx << lw);
     204           0 :         uint8_t *dst = pd->dst.buf + (idy * pd->dst.stride << lh) + (idx << lh);
     205           0 :         int block_idx = (idy << 1) + idx;
     206           0 :         int low_err_skip = 0;
     207             : 
     208           0 :         var = cpi->fn_ptr[unit_size].vf(src, p->src.stride, dst, pd->dst.stride,
     209             :                                         &sse);
     210           0 :         x->bsse[(i << 2) + block_idx] = sse;
     211           0 :         sum_sse += sse;
     212             : 
     213           0 :         x->skip_txfm[(i << 2) + block_idx] = SKIP_TXFM_NONE;
     214           0 :         if (!x->select_tx_size) {
     215             :           // Check if all ac coefficients can be quantized to zero.
     216           0 :           if (var < ac_thr || var == 0) {
     217           0 :             x->skip_txfm[(i << 2) + block_idx] = SKIP_TXFM_AC_ONLY;
     218             : 
     219             :             // Check if dc coefficient can be quantized to zero.
     220           0 :             if (sse - var < dc_thr || sse == var) {
     221           0 :               x->skip_txfm[(i << 2) + block_idx] = SKIP_TXFM_AC_DC;
     222             : 
     223           0 :               if (!sse || (var < low_ac_thr && sse - var < low_dc_thr))
     224           0 :                 low_err_skip = 1;
     225             :             }
     226             :           }
     227             :         }
     228             : 
     229           0 :         if (skip_flag && !low_err_skip) skip_flag = 0;
     230             : 
     231           0 :         if (i == 0) x->pred_sse[ref] += sse;
     232             :       }
     233             :     }
     234             : 
     235           0 :     total_sse += sum_sse;
     236             : 
     237             :     // Fast approximate the modelling function.
     238           0 :     if (cpi->sf.simple_model_rd_from_var) {
     239             :       int64_t rate;
     240           0 :       const int64_t square_error = sum_sse;
     241           0 :       int quantizer = (pd->dequant[1] >> dequant_shift);
     242             : 
     243           0 :       if (quantizer < 120)
     244           0 :         rate = (square_error * (280 - quantizer)) >> (16 - VP9_PROB_COST_SHIFT);
     245             :       else
     246           0 :         rate = 0;
     247           0 :       dist = (square_error * quantizer) >> 8;
     248           0 :       rate_sum += rate;
     249           0 :       dist_sum += dist;
     250             :     } else {
     251           0 :       vp9_model_rd_from_var_lapndz(sum_sse, num_pels_log2_lookup[bs],
     252           0 :                                    pd->dequant[1] >> dequant_shift, &rate,
     253             :                                    &dist);
     254           0 :       rate_sum += rate;
     255           0 :       dist_sum += dist;
     256             :     }
     257             :   }
     258             : 
     259           0 :   *skip_txfm_sb = skip_flag;
     260           0 :   *skip_sse_sb = total_sse << 4;
     261           0 :   *out_rate_sum = (int)rate_sum;
     262           0 :   *out_dist_sum = dist_sum << 4;
     263           0 : }
     264             : 
     265             : #if CONFIG_VP9_HIGHBITDEPTH
     266             : int64_t vp9_highbd_block_error_c(const tran_low_t *coeff,
     267             :                                  const tran_low_t *dqcoeff, intptr_t block_size,
     268             :                                  int64_t *ssz, int bd) {
     269             :   int i;
     270             :   int64_t error = 0, sqcoeff = 0;
     271             :   int shift = 2 * (bd - 8);
     272             :   int rounding = shift > 0 ? 1 << (shift - 1) : 0;
     273             : 
     274             :   for (i = 0; i < block_size; i++) {
     275             :     const int64_t diff = coeff[i] - dqcoeff[i];
     276             :     error += diff * diff;
     277             :     sqcoeff += (int64_t)coeff[i] * (int64_t)coeff[i];
     278             :   }
     279             :   assert(error >= 0 && sqcoeff >= 0);
     280             :   error = (error + rounding) >> shift;
     281             :   sqcoeff = (sqcoeff + rounding) >> shift;
     282             : 
     283             :   *ssz = sqcoeff;
     284             :   return error;
     285             : }
     286             : 
     287             : int64_t vp9_highbd_block_error_8bit_c(const tran_low_t *coeff,
     288             :                                       const tran_low_t *dqcoeff,
     289             :                                       intptr_t block_size, int64_t *ssz) {
     290             :   // Note that the C versions of these 2 functions (vp9_block_error and
     291             :   // vp9_highbd_block_error_8bit are the same, but the optimized assembly
     292             :   // routines are not compatible in the non high bitdepth configuration, so
     293             :   // they still cannot share the same name.
     294             :   return vp9_block_error_c(coeff, dqcoeff, block_size, ssz);
     295             : }
     296             : 
     297             : static int64_t vp9_highbd_block_error_dispatch(const tran_low_t *coeff,
     298             :                                                const tran_low_t *dqcoeff,
     299             :                                                intptr_t block_size,
     300             :                                                int64_t *ssz, int bd) {
     301             :   if (bd == 8) {
     302             :     return vp9_highbd_block_error_8bit(coeff, dqcoeff, block_size, ssz);
     303             :   } else {
     304             :     return vp9_highbd_block_error(coeff, dqcoeff, block_size, ssz, bd);
     305             :   }
     306             : }
     307             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     308             : 
     309           0 : int64_t vp9_block_error_c(const tran_low_t *coeff, const tran_low_t *dqcoeff,
     310             :                           intptr_t block_size, int64_t *ssz) {
     311             :   int i;
     312           0 :   int64_t error = 0, sqcoeff = 0;
     313             : 
     314           0 :   for (i = 0; i < block_size; i++) {
     315           0 :     const int diff = coeff[i] - dqcoeff[i];
     316           0 :     error += diff * diff;
     317           0 :     sqcoeff += coeff[i] * coeff[i];
     318             :   }
     319             : 
     320           0 :   *ssz = sqcoeff;
     321           0 :   return error;
     322             : }
     323             : 
     324           0 : int64_t vp9_block_error_fp_c(const int16_t *coeff, const int16_t *dqcoeff,
     325             :                              int block_size) {
     326             :   int i;
     327           0 :   int64_t error = 0;
     328             : 
     329           0 :   for (i = 0; i < block_size; i++) {
     330           0 :     const int diff = coeff[i] - dqcoeff[i];
     331           0 :     error += diff * diff;
     332             :   }
     333             : 
     334           0 :   return error;
     335             : }
     336             : 
     337             : /* The trailing '0' is a terminator which is used inside cost_coeffs() to
     338             :  * decide whether to include cost of a trailing EOB node or not (i.e. we
     339             :  * can skip this if the last coefficient in this transform block, e.g. the
     340             :  * 16th coefficient in a 4x4 block or the 64th coefficient in a 8x8 block,
     341             :  * were non-zero). */
     342             : static const int16_t band_counts[TX_SIZES][8] = {
     343             :   { 1, 2, 3, 4, 3, 16 - 13, 0 },
     344             :   { 1, 2, 3, 4, 11, 64 - 21, 0 },
     345             :   { 1, 2, 3, 4, 11, 256 - 21, 0 },
     346             :   { 1, 2, 3, 4, 11, 1024 - 21, 0 },
     347             : };
     348           0 : static int cost_coeffs(MACROBLOCK *x, int plane, int block, TX_SIZE tx_size,
     349             :                        int pt, const int16_t *scan, const int16_t *nb,
     350             :                        int use_fast_coef_costing) {
     351           0 :   MACROBLOCKD *const xd = &x->e_mbd;
     352           0 :   MODE_INFO *mi = xd->mi[0];
     353           0 :   const struct macroblock_plane *p = &x->plane[plane];
     354           0 :   const PLANE_TYPE type = get_plane_type(plane);
     355           0 :   const int16_t *band_count = &band_counts[tx_size][1];
     356           0 :   const int eob = p->eobs[block];
     357           0 :   const tran_low_t *const qcoeff = BLOCK_OFFSET(p->qcoeff, block);
     358           0 :   unsigned int(*token_costs)[2][COEFF_CONTEXTS][ENTROPY_TOKENS] =
     359           0 :       x->token_costs[tx_size][type][is_inter_block(mi)];
     360             :   uint8_t token_cache[32 * 32];
     361             :   int c, cost;
     362             : #if CONFIG_VP9_HIGHBITDEPTH
     363             :   const int *cat6_high_cost = vp9_get_high_cost_table(xd->bd);
     364             : #else
     365           0 :   const int *cat6_high_cost = vp9_get_high_cost_table(8);
     366             : #endif
     367             : 
     368             :   // Check for consistency of tx_size with mode info
     369           0 :   assert(type == PLANE_TYPE_Y
     370             :              ? mi->tx_size == tx_size
     371             :              : get_uv_tx_size(mi, &xd->plane[plane]) == tx_size);
     372             : 
     373           0 :   if (eob == 0) {
     374             :     // single eob token
     375           0 :     cost = token_costs[0][0][pt][EOB_TOKEN];
     376           0 :     c = 0;
     377             :   } else {
     378           0 :     if (use_fast_coef_costing) {
     379           0 :       int band_left = *band_count++;
     380             : 
     381             :       // dc token
     382           0 :       int v = qcoeff[0];
     383             :       int16_t prev_t;
     384           0 :       cost = vp9_get_token_cost(v, &prev_t, cat6_high_cost);
     385           0 :       cost += (*token_costs)[0][pt][prev_t];
     386             : 
     387           0 :       token_cache[0] = vp9_pt_energy_class[prev_t];
     388           0 :       ++token_costs;
     389             : 
     390             :       // ac tokens
     391           0 :       for (c = 1; c < eob; c++) {
     392           0 :         const int rc = scan[c];
     393             :         int16_t t;
     394             : 
     395           0 :         v = qcoeff[rc];
     396           0 :         cost += vp9_get_token_cost(v, &t, cat6_high_cost);
     397           0 :         cost += (*token_costs)[!prev_t][!prev_t][t];
     398           0 :         prev_t = t;
     399           0 :         if (!--band_left) {
     400           0 :           band_left = *band_count++;
     401           0 :           ++token_costs;
     402             :         }
     403             :       }
     404             : 
     405             :       // eob token
     406           0 :       if (band_left) cost += (*token_costs)[0][!prev_t][EOB_TOKEN];
     407             : 
     408             :     } else {  // !use_fast_coef_costing
     409           0 :       int band_left = *band_count++;
     410             : 
     411             :       // dc token
     412           0 :       int v = qcoeff[0];
     413             :       int16_t tok;
     414             :       unsigned int(*tok_cost_ptr)[COEFF_CONTEXTS][ENTROPY_TOKENS];
     415           0 :       cost = vp9_get_token_cost(v, &tok, cat6_high_cost);
     416           0 :       cost += (*token_costs)[0][pt][tok];
     417             : 
     418           0 :       token_cache[0] = vp9_pt_energy_class[tok];
     419           0 :       ++token_costs;
     420             : 
     421           0 :       tok_cost_ptr = &((*token_costs)[!tok]);
     422             : 
     423             :       // ac tokens
     424           0 :       for (c = 1; c < eob; c++) {
     425           0 :         const int rc = scan[c];
     426             : 
     427           0 :         v = qcoeff[rc];
     428           0 :         cost += vp9_get_token_cost(v, &tok, cat6_high_cost);
     429           0 :         pt = get_coef_context(nb, token_cache, c);
     430           0 :         cost += (*tok_cost_ptr)[pt][tok];
     431           0 :         token_cache[rc] = vp9_pt_energy_class[tok];
     432           0 :         if (!--band_left) {
     433           0 :           band_left = *band_count++;
     434           0 :           ++token_costs;
     435             :         }
     436           0 :         tok_cost_ptr = &((*token_costs)[!tok]);
     437             :       }
     438             : 
     439             :       // eob token
     440           0 :       if (band_left) {
     441           0 :         pt = get_coef_context(nb, token_cache, c);
     442           0 :         cost += (*token_costs)[0][pt][EOB_TOKEN];
     443             :       }
     444             :     }
     445             :   }
     446             : 
     447           0 :   return cost;
     448             : }
     449             : 
     450           0 : static INLINE int num_4x4_to_edge(int plane_4x4_dim, int mb_to_edge_dim,
     451             :                                   int subsampling_dim, int blk_dim) {
     452           0 :   return plane_4x4_dim + (mb_to_edge_dim >> (5 + subsampling_dim)) - blk_dim;
     453             : }
     454             : 
     455             : // Compute the pixel domain sum square error on all visible 4x4s in the
     456             : // transform block.
     457           0 : static unsigned pixel_sse(const VP9_COMP *const cpi, const MACROBLOCKD *xd,
     458             :                           const struct macroblockd_plane *const pd,
     459             :                           const uint8_t *src, const int src_stride,
     460             :                           const uint8_t *dst, const int dst_stride, int blk_row,
     461             :                           int blk_col, const BLOCK_SIZE plane_bsize,
     462             :                           const BLOCK_SIZE tx_bsize) {
     463           0 :   unsigned int sse = 0;
     464           0 :   const int plane_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
     465           0 :   const int plane_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
     466           0 :   const int tx_4x4_w = num_4x4_blocks_wide_lookup[tx_bsize];
     467           0 :   const int tx_4x4_h = num_4x4_blocks_high_lookup[tx_bsize];
     468           0 :   int b4x4s_to_right_edge = num_4x4_to_edge(plane_4x4_w, xd->mb_to_right_edge,
     469             :                                             pd->subsampling_x, blk_col);
     470           0 :   int b4x4s_to_bottom_edge = num_4x4_to_edge(plane_4x4_h, xd->mb_to_bottom_edge,
     471             :                                              pd->subsampling_y, blk_row);
     472           0 :   if (tx_bsize == BLOCK_4X4 ||
     473           0 :       (b4x4s_to_right_edge >= tx_4x4_w && b4x4s_to_bottom_edge >= tx_4x4_h)) {
     474           0 :     cpi->fn_ptr[tx_bsize].vf(src, src_stride, dst, dst_stride, &sse);
     475             :   } else {
     476           0 :     const vpx_variance_fn_t vf_4x4 = cpi->fn_ptr[BLOCK_4X4].vf;
     477             :     int r, c;
     478           0 :     unsigned this_sse = 0;
     479           0 :     int max_r = VPXMIN(b4x4s_to_bottom_edge, tx_4x4_h);
     480           0 :     int max_c = VPXMIN(b4x4s_to_right_edge, tx_4x4_w);
     481           0 :     sse = 0;
     482             :     // if we are in the unrestricted motion border.
     483           0 :     for (r = 0; r < max_r; ++r) {
     484             :       // Skip visiting the sub blocks that are wholly within the UMV.
     485           0 :       for (c = 0; c < max_c; ++c) {
     486           0 :         vf_4x4(src + r * src_stride * 4 + c * 4, src_stride,
     487           0 :                dst + r * dst_stride * 4 + c * 4, dst_stride, &this_sse);
     488           0 :         sse += this_sse;
     489             :       }
     490             :     }
     491             :   }
     492           0 :   return sse;
     493             : }
     494             : 
     495             : // Compute the squares sum squares on all visible 4x4s in the transform block.
     496           0 : static int64_t sum_squares_visible(const MACROBLOCKD *xd,
     497             :                                    const struct macroblockd_plane *const pd,
     498             :                                    const int16_t *diff, const int diff_stride,
     499             :                                    int blk_row, int blk_col,
     500             :                                    const BLOCK_SIZE plane_bsize,
     501             :                                    const BLOCK_SIZE tx_bsize) {
     502             :   int64_t sse;
     503           0 :   const int plane_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
     504           0 :   const int plane_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
     505           0 :   const int tx_4x4_w = num_4x4_blocks_wide_lookup[tx_bsize];
     506           0 :   const int tx_4x4_h = num_4x4_blocks_high_lookup[tx_bsize];
     507           0 :   int b4x4s_to_right_edge = num_4x4_to_edge(plane_4x4_w, xd->mb_to_right_edge,
     508             :                                             pd->subsampling_x, blk_col);
     509           0 :   int b4x4s_to_bottom_edge = num_4x4_to_edge(plane_4x4_h, xd->mb_to_bottom_edge,
     510             :                                              pd->subsampling_y, blk_row);
     511           0 :   if (tx_bsize == BLOCK_4X4 ||
     512           0 :       (b4x4s_to_right_edge >= tx_4x4_w && b4x4s_to_bottom_edge >= tx_4x4_h)) {
     513           0 :     sse = (int64_t)vpx_sum_squares_2d_i16(diff, diff_stride, tx_bsize);
     514             :   } else {
     515             :     int r, c;
     516           0 :     int max_r = VPXMIN(b4x4s_to_bottom_edge, tx_4x4_h);
     517           0 :     int max_c = VPXMIN(b4x4s_to_right_edge, tx_4x4_w);
     518           0 :     sse = 0;
     519             :     // if we are in the unrestricted motion border.
     520           0 :     for (r = 0; r < max_r; ++r) {
     521             :       // Skip visiting the sub blocks that are wholly within the UMV.
     522           0 :       for (c = 0; c < max_c; ++c) {
     523           0 :         sse += (int64_t)vpx_sum_squares_2d_i16(diff, diff_stride, BLOCK_4X4);
     524             :       }
     525             :     }
     526             :   }
     527           0 :   return sse;
     528             : }
     529             : 
     530           0 : static void dist_block(const VP9_COMP *cpi, MACROBLOCK *x, int plane,
     531             :                        BLOCK_SIZE plane_bsize, int block, int blk_row,
     532             :                        int blk_col, TX_SIZE tx_size, int64_t *out_dist,
     533             :                        int64_t *out_sse) {
     534           0 :   MACROBLOCKD *const xd = &x->e_mbd;
     535           0 :   const struct macroblock_plane *const p = &x->plane[plane];
     536           0 :   const struct macroblockd_plane *const pd = &xd->plane[plane];
     537             : 
     538           0 :   if (x->block_tx_domain) {
     539           0 :     const int ss_txfrm_size = tx_size << 1;
     540             :     int64_t this_sse;
     541           0 :     const int shift = tx_size == TX_32X32 ? 0 : 2;
     542           0 :     const tran_low_t *const coeff = BLOCK_OFFSET(p->coeff, block);
     543           0 :     const tran_low_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
     544             : #if CONFIG_VP9_HIGHBITDEPTH
     545             :     const int bd = (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) ? xd->bd : 8;
     546             :     *out_dist = vp9_highbd_block_error_dispatch(
     547             :                     coeff, dqcoeff, 16 << ss_txfrm_size, &this_sse, bd) >>
     548             :                 shift;
     549             : #else
     550           0 :     *out_dist =
     551           0 :         vp9_block_error(coeff, dqcoeff, 16 << ss_txfrm_size, &this_sse) >>
     552             :         shift;
     553             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     554           0 :     *out_sse = this_sse >> shift;
     555             : 
     556           0 :     if (x->skip_encode && !is_inter_block(xd->mi[0])) {
     557             :       // TODO(jingning): tune the model to better capture the distortion.
     558           0 :       const int64_t p =
     559           0 :           (pd->dequant[1] * pd->dequant[1] * (1 << ss_txfrm_size)) >>
     560             : #if CONFIG_VP9_HIGHBITDEPTH
     561             :           (shift + 2 + (bd - 8) * 2);
     562             : #else
     563           0 :           (shift + 2);
     564             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     565           0 :       *out_dist += (p >> 4);
     566           0 :       *out_sse += p;
     567             :     }
     568             :   } else {
     569           0 :     const BLOCK_SIZE tx_bsize = txsize_to_bsize[tx_size];
     570           0 :     const int bs = 4 * num_4x4_blocks_wide_lookup[tx_bsize];
     571           0 :     const int src_stride = p->src.stride;
     572           0 :     const int dst_stride = pd->dst.stride;
     573           0 :     const int src_idx = 4 * (blk_row * src_stride + blk_col);
     574           0 :     const int dst_idx = 4 * (blk_row * dst_stride + blk_col);
     575           0 :     const uint8_t *src = &p->src.buf[src_idx];
     576           0 :     const uint8_t *dst = &pd->dst.buf[dst_idx];
     577           0 :     const tran_low_t *dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
     578           0 :     const uint16_t *eob = &p->eobs[block];
     579             :     unsigned int tmp;
     580             : 
     581           0 :     tmp = pixel_sse(cpi, xd, pd, src, src_stride, dst, dst_stride, blk_row,
     582             :                     blk_col, plane_bsize, tx_bsize);
     583           0 :     *out_sse = (int64_t)tmp * 16;
     584             : 
     585           0 :     if (*eob) {
     586             : #if CONFIG_VP9_HIGHBITDEPTH
     587             :       DECLARE_ALIGNED(16, uint16_t, recon16[1024]);
     588             :       uint8_t *recon = (uint8_t *)recon16;
     589             : #else
     590             :       DECLARE_ALIGNED(16, uint8_t, recon[1024]);
     591             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     592             : 
     593             : #if CONFIG_VP9_HIGHBITDEPTH
     594             :       if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
     595             :         recon = CONVERT_TO_BYTEPTR(recon);
     596             :         vpx_highbd_convolve_copy(dst, dst_stride, recon, 32, NULL, 0, NULL, 0,
     597             :                                  bs, bs, xd->bd);
     598             :         if (xd->lossless) {
     599             :           vp9_highbd_iwht4x4_add(dqcoeff, recon, 32, *eob, xd->bd);
     600             :         } else {
     601             :           switch (tx_size) {
     602             :             case TX_4X4:
     603             :               vp9_highbd_idct4x4_add(dqcoeff, recon, 32, *eob, xd->bd);
     604             :               break;
     605             :             case TX_8X8:
     606             :               vp9_highbd_idct8x8_add(dqcoeff, recon, 32, *eob, xd->bd);
     607             :               break;
     608             :             case TX_16X16:
     609             :               vp9_highbd_idct16x16_add(dqcoeff, recon, 32, *eob, xd->bd);
     610             :               break;
     611             :             case TX_32X32:
     612             :               vp9_highbd_idct32x32_add(dqcoeff, recon, 32, *eob, xd->bd);
     613             :               break;
     614             :             default: assert(0 && "Invalid transform size");
     615             :           }
     616             :         }
     617             :       } else {
     618             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     619           0 :         vpx_convolve_copy(dst, dst_stride, recon, 32, NULL, 0, NULL, 0, bs, bs);
     620           0 :         switch (tx_size) {
     621           0 :           case TX_32X32: vp9_idct32x32_add(dqcoeff, recon, 32, *eob); break;
     622           0 :           case TX_16X16: vp9_idct16x16_add(dqcoeff, recon, 32, *eob); break;
     623           0 :           case TX_8X8: vp9_idct8x8_add(dqcoeff, recon, 32, *eob); break;
     624             :           case TX_4X4:
     625             :             // this is like vp9_short_idct4x4 but has a special case around
     626             :             // eob<=1, which is significant (not just an optimization) for
     627             :             // the lossless case.
     628           0 :             x->itxm_add(dqcoeff, recon, 32, *eob);
     629           0 :             break;
     630           0 :           default: assert(0 && "Invalid transform size"); break;
     631             :         }
     632             : #if CONFIG_VP9_HIGHBITDEPTH
     633             :       }
     634             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     635             : 
     636           0 :       tmp = pixel_sse(cpi, xd, pd, src, src_stride, recon, 32, blk_row, blk_col,
     637             :                       plane_bsize, tx_bsize);
     638             :     }
     639             : 
     640           0 :     *out_dist = (int64_t)tmp * 16;
     641             :   }
     642           0 : }
     643             : 
     644           0 : static int rate_block(int plane, int block, TX_SIZE tx_size, int coeff_ctx,
     645             :                       struct rdcost_block_args *args) {
     646           0 :   return cost_coeffs(args->x, plane, block, tx_size, coeff_ctx, args->so->scan,
     647           0 :                      args->so->neighbors, args->use_fast_coef_costing);
     648             : }
     649             : 
     650           0 : static void block_rd_txfm(int plane, int block, int blk_row, int blk_col,
     651             :                           BLOCK_SIZE plane_bsize, TX_SIZE tx_size, void *arg) {
     652           0 :   struct rdcost_block_args *args = arg;
     653           0 :   MACROBLOCK *const x = args->x;
     654           0 :   MACROBLOCKD *const xd = &x->e_mbd;
     655           0 :   MODE_INFO *const mi = xd->mi[0];
     656             :   int64_t rd1, rd2, rd;
     657             :   int rate;
     658             :   int64_t dist;
     659             :   int64_t sse;
     660           0 :   const int coeff_ctx =
     661           0 :       combine_entropy_contexts(args->t_left[blk_row], args->t_above[blk_col]);
     662             : 
     663           0 :   if (args->exit_early) return;
     664             : 
     665           0 :   if (!is_inter_block(mi)) {
     666           0 :     struct encode_b_args intra_arg = { x, x->block_qcoeff_opt, args->t_above,
     667           0 :                                        args->t_left, &mi->skip };
     668           0 :     vp9_encode_block_intra(plane, block, blk_row, blk_col, plane_bsize, tx_size,
     669             :                            &intra_arg);
     670           0 :     if (x->block_tx_domain) {
     671           0 :       dist_block(args->cpi, x, plane, plane_bsize, block, blk_row, blk_col,
     672             :                  tx_size, &dist, &sse);
     673             :     } else {
     674           0 :       const BLOCK_SIZE tx_bsize = txsize_to_bsize[tx_size];
     675           0 :       const struct macroblock_plane *const p = &x->plane[plane];
     676           0 :       const struct macroblockd_plane *const pd = &xd->plane[plane];
     677           0 :       const int src_stride = p->src.stride;
     678           0 :       const int dst_stride = pd->dst.stride;
     679           0 :       const int diff_stride = 4 * num_4x4_blocks_wide_lookup[plane_bsize];
     680           0 :       const uint8_t *src = &p->src.buf[4 * (blk_row * src_stride + blk_col)];
     681           0 :       const uint8_t *dst = &pd->dst.buf[4 * (blk_row * dst_stride + blk_col)];
     682           0 :       const int16_t *diff = &p->src_diff[4 * (blk_row * diff_stride + blk_col)];
     683             :       unsigned int tmp;
     684           0 :       sse = sum_squares_visible(xd, pd, diff, diff_stride, blk_row, blk_col,
     685             :                                 plane_bsize, tx_bsize);
     686             : #if CONFIG_VP9_HIGHBITDEPTH
     687             :       if ((xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) && (xd->bd > 8))
     688             :         sse = ROUND64_POWER_OF_TWO(sse, (xd->bd - 8) * 2);
     689             : #endif  // CONFIG_VP9_HIGHBITDEPTH
     690           0 :       sse = sse * 16;
     691           0 :       tmp = pixel_sse(args->cpi, xd, pd, src, src_stride, dst, dst_stride,
     692             :                       blk_row, blk_col, plane_bsize, tx_bsize);
     693           0 :       dist = (int64_t)tmp * 16;
     694             :     }
     695           0 :   } else if (max_txsize_lookup[plane_bsize] == tx_size) {
     696           0 :     if (x->skip_txfm[(plane << 2) + (block >> (tx_size << 1))] ==
     697             :         SKIP_TXFM_NONE) {
     698             :       // full forward transform and quantization
     699           0 :       vp9_xform_quant(x, plane, block, blk_row, blk_col, plane_bsize, tx_size);
     700           0 :       if (x->block_qcoeff_opt)
     701           0 :         vp9_optimize_b(x, plane, block, tx_size, coeff_ctx);
     702           0 :       dist_block(args->cpi, x, plane, plane_bsize, block, blk_row, blk_col,
     703             :                  tx_size, &dist, &sse);
     704           0 :     } else if (x->skip_txfm[(plane << 2) + (block >> (tx_size << 1))] ==
     705             :                SKIP_TXFM_AC_ONLY) {
     706             :       // compute DC coefficient
     707           0 :       tran_low_t *const coeff = BLOCK_OFFSET(x->plane[plane].coeff, block);
     708           0 :       tran_low_t *const dqcoeff = BLOCK_OFFSET(xd->plane[plane].dqcoeff, block);
     709           0 :       vp9_xform_quant_dc(x, plane, block, blk_row, blk_col, plane_bsize,
     710             :                          tx_size);
     711           0 :       sse = x->bsse[(plane << 2) + (block >> (tx_size << 1))] << 4;
     712           0 :       dist = sse;
     713           0 :       if (x->plane[plane].eobs[block]) {
     714           0 :         const int64_t orig_sse = (int64_t)coeff[0] * coeff[0];
     715           0 :         const int64_t resd_sse = coeff[0] - dqcoeff[0];
     716           0 :         int64_t dc_correct = orig_sse - resd_sse * resd_sse;
     717             : #if CONFIG_VP9_HIGHBITDEPTH
     718             :         dc_correct >>= ((xd->bd - 8) * 2);
     719             : #endif
     720           0 :         if (tx_size != TX_32X32) dc_correct >>= 2;
     721             : 
     722           0 :         dist = VPXMAX(0, sse - dc_correct);
     723             :       }
     724             :     } else {
     725             :       // SKIP_TXFM_AC_DC
     726             :       // skip forward transform
     727           0 :       x->plane[plane].eobs[block] = 0;
     728           0 :       sse = x->bsse[(plane << 2) + (block >> (tx_size << 1))] << 4;
     729           0 :       dist = sse;
     730             :     }
     731             :   } else {
     732             :     // full forward transform and quantization
     733           0 :     vp9_xform_quant(x, plane, block, blk_row, blk_col, plane_bsize, tx_size);
     734           0 :     if (x->block_qcoeff_opt)
     735           0 :       vp9_optimize_b(x, plane, block, tx_size, coeff_ctx);
     736           0 :     dist_block(args->cpi, x, plane, plane_bsize, block, blk_row, blk_col,
     737             :                tx_size, &dist, &sse);
     738             :   }
     739             : 
     740           0 :   rd = RDCOST(x->rdmult, x->rddiv, 0, dist);
     741           0 :   if (args->this_rd + rd > args->best_rd) {
     742           0 :     args->exit_early = 1;
     743           0 :     return;
     744             :   }
     745             : 
     746           0 :   rate = rate_block(plane, block, tx_size, coeff_ctx, args);
     747           0 :   args->t_above[blk_col] = (x->plane[plane].eobs[block] > 0) ? 1 : 0;
     748           0 :   args->t_left[blk_row] = (x->plane[plane].eobs[block] > 0) ? 1 : 0;
     749           0 :   rd1 = RDCOST(x->rdmult, x->rddiv, rate, dist);
     750           0 :   rd2 = RDCOST(x->rdmult, x->rddiv, 0, sse);
     751             : 
     752             :   // TODO(jingning): temporarily enabled only for luma component
     753           0 :   rd = VPXMIN(rd1, rd2);
     754           0 :   if (plane == 0)
     755           0 :     x->zcoeff_blk[tx_size][block] =
     756           0 :         !x->plane[plane].eobs[block] || (rd1 > rd2 && !xd->lossless);
     757             : 
     758           0 :   args->this_rate += rate;
     759           0 :   args->this_dist += dist;
     760           0 :   args->this_sse += sse;
     761           0 :   args->this_rd += rd;
     762             : 
     763           0 :   if (args->this_rd > args->best_rd) {
     764           0 :     args->exit_early = 1;
     765           0 :     return;
     766             :   }
     767             : 
     768           0 :   args->skippable &= !x->plane[plane].eobs[block];
     769             : }
     770             : 
     771           0 : static void txfm_rd_in_plane(const VP9_COMP *cpi, MACROBLOCK *x, int *rate,
     772             :                              int64_t *distortion, int *skippable, int64_t *sse,
     773             :                              int64_t ref_best_rd, int plane, BLOCK_SIZE bsize,
     774             :                              TX_SIZE tx_size, int use_fast_coef_casting) {
     775           0 :   MACROBLOCKD *const xd = &x->e_mbd;
     776           0 :   const struct macroblockd_plane *const pd = &xd->plane[plane];
     777             :   struct rdcost_block_args args;
     778           0 :   vp9_zero(args);
     779           0 :   args.cpi = cpi;
     780           0 :   args.x = x;
     781           0 :   args.best_rd = ref_best_rd;
     782           0 :   args.use_fast_coef_costing = use_fast_coef_casting;
     783           0 :   args.skippable = 1;
     784             : 
     785           0 :   if (plane == 0) xd->mi[0]->tx_size = tx_size;
     786             : 
     787           0 :   vp9_get_entropy_contexts(bsize, tx_size, pd, args.t_above, args.t_left);
     788             : 
     789           0 :   args.so = get_scan(xd, tx_size, get_plane_type(plane), 0);
     790             : 
     791           0 :   vp9_foreach_transformed_block_in_plane(xd, bsize, plane, block_rd_txfm,
     792             :                                          &args);
     793           0 :   if (args.exit_early) {
     794           0 :     *rate = INT_MAX;
     795           0 :     *distortion = INT64_MAX;
     796           0 :     *sse = INT64_MAX;
     797           0 :     *skippable = 0;
     798             :   } else {
     799           0 :     *distortion = args.this_dist;
     800           0 :     *rate = args.this_rate;
     801           0 :     *sse = args.this_sse;
     802           0 :     *skippable = args.skippable;
     803             :   }
     804           0 : }
     805             : 
     806           0 : static void choose_largest_tx_size(VP9_COMP *cpi, MACROBLOCK *x, int *rate,
     807             :                                    int64_t *distortion, int *skip, int64_t *sse,
     808             :                                    int64_t ref_best_rd, BLOCK_SIZE bs) {
     809           0 :   const TX_SIZE max_tx_size = max_txsize_lookup[bs];
     810           0 :   VP9_COMMON *const cm = &cpi->common;
     811           0 :   const TX_SIZE largest_tx_size = tx_mode_to_biggest_tx_size[cm->tx_mode];
     812           0 :   MACROBLOCKD *const xd = &x->e_mbd;
     813           0 :   MODE_INFO *const mi = xd->mi[0];
     814             : 
     815           0 :   mi->tx_size = VPXMIN(max_tx_size, largest_tx_size);
     816             : 
     817           0 :   txfm_rd_in_plane(cpi, x, rate, distortion, skip, sse, ref_best_rd, 0, bs,
     818           0 :                    mi->tx_size, cpi->sf.use_fast_coef_costing);
     819           0 : }
     820             : 
     821           0 : static void choose_tx_size_from_rd(VP9_COMP *cpi, MACROBLOCK *x, int *rate,
     822             :                                    int64_t *distortion, int *skip,
     823             :                                    int64_t *psse, int64_t ref_best_rd,
     824             :                                    BLOCK_SIZE bs) {
     825           0 :   const TX_SIZE max_tx_size = max_txsize_lookup[bs];
     826           0 :   VP9_COMMON *const cm = &cpi->common;
     827           0 :   MACROBLOCKD *const xd = &x->e_mbd;
     828           0 :   MODE_INFO *const mi = xd->mi[0];
     829           0 :   vpx_prob skip_prob = vp9_get_skip_prob(cm, xd);
     830             :   int r[TX_SIZES][2], s[TX_SIZES];
     831             :   int64_t d[TX_SIZES], sse[TX_SIZES];
     832           0 :   int64_t rd[TX_SIZES][2] = { { INT64_MAX, INT64_MAX },
     833             :                               { INT64_MAX, INT64_MAX },
     834             :                               { INT64_MAX, INT64_MAX },
     835             :                               { INT64_MAX, INT64_MAX } };
     836             :   int n, m;
     837             :   int s0, s1;
     838           0 :   int64_t best_rd = INT64_MAX;
     839           0 :   TX_SIZE best_tx = max_tx_size;
     840             :   int start_tx, end_tx;
     841             : 
     842           0 :   const vpx_prob *tx_probs = get_tx_probs2(max_tx_size, xd, &cm->fc->tx_probs);
     843           0 :   assert(skip_prob > 0);
     844           0 :   s0 = vp9_cost_bit(skip_prob, 0);
     845           0 :   s1 = vp9_cost_bit(skip_prob, 1);
     846             : 
     847           0 :   if (cm->tx_mode == TX_MODE_SELECT) {
     848           0 :     start_tx = max_tx_size;
     849           0 :     end_tx = 0;
     850             :   } else {
     851           0 :     TX_SIZE chosen_tx_size =
     852           0 :         VPXMIN(max_tx_size, tx_mode_to_biggest_tx_size[cm->tx_mode]);
     853           0 :     start_tx = chosen_tx_size;
     854           0 :     end_tx = chosen_tx_size;
     855             :   }
     856             : 
     857           0 :   for (n = start_tx; n >= end_tx; n--) {
     858           0 :     int r_tx_size = 0;
     859           0 :     for (m = 0; m <= n - (n == (int)max_tx_size); m++) {
     860           0 :       if (m == n)
     861           0 :         r_tx_size += vp9_cost_zero(tx_probs[m]);
     862             :       else
     863           0 :         r_tx_size += vp9_cost_one(tx_probs[m]);
     864             :     }
     865           0 :     txfm_rd_in_plane(cpi, x, &r[n][0], &d[n], &s[n], &sse[n], ref_best_rd, 0,
     866             :                      bs, n, cpi->sf.use_fast_coef_costing);
     867           0 :     r[n][1] = r[n][0];
     868           0 :     if (r[n][0] < INT_MAX) {
     869           0 :       r[n][1] += r_tx_size;
     870             :     }
     871           0 :     if (d[n] == INT64_MAX || r[n][0] == INT_MAX) {
     872           0 :       rd[n][0] = rd[n][1] = INT64_MAX;
     873           0 :     } else if (s[n]) {
     874           0 :       if (is_inter_block(mi)) {
     875           0 :         rd[n][0] = rd[n][1] = RDCOST(x->rdmult, x->rddiv, s1, sse[n]);
     876           0 :         r[n][1] -= r_tx_size;
     877             :       } else {
     878           0 :         rd[n][0] = RDCOST(x->rdmult, x->rddiv, s1, sse[n]);
     879           0 :         rd[n][1] = RDCOST(x->rdmult, x->rddiv, s1 + r_tx_size, sse[n]);
     880             :       }
     881             :     } else {
     882           0 :       rd[n][0] = RDCOST(x->rdmult, x->rddiv, r[n][0] + s0, d[n]);
     883           0 :       rd[n][1] = RDCOST(x->rdmult, x->rddiv, r[n][1] + s0, d[n]);
     884             :     }
     885             : 
     886           0 :     if (is_inter_block(mi) && !xd->lossless && !s[n] && sse[n] != INT64_MAX) {
     887           0 :       rd[n][0] = VPXMIN(rd[n][0], RDCOST(x->rdmult, x->rddiv, s1, sse[n]));
     888           0 :       rd[n][1] = VPXMIN(rd[n][1], RDCOST(x->rdmult, x->rddiv, s1, sse[n]));
     889             :     }
     890             : 
     891             :     // Early termination in transform size search.
     892           0 :     if (cpi->sf.tx_size_search_breakout &&
     893           0 :         (rd[n][1] == INT64_MAX ||
     894           0 :          (n < (int)max_tx_size && rd[n][1] > rd[n + 1][1]) || s[n] == 1))
     895             :       break;
     896             : 
     897           0 :     if (rd[n][1] < best_rd) {
     898           0 :       best_tx = n;
     899           0 :       best_rd = rd[n][1];
     900             :     }
     901             :   }
     902           0 :   mi->tx_size = best_tx;
     903             : 
     904           0 :   *distortion = d[mi->tx_size];
     905           0 :   *rate = r[mi->tx_size][cm->tx_mode == TX_MODE_SELECT];
     906           0 :   *skip = s[mi->tx_size];
     907           0 :   *psse = sse[mi->tx_size];
     908           0 : }
     909             : 
     910           0 : static void super_block_yrd(VP9_COMP *cpi, MACROBLOCK *x, int *rate,
     911             :                             int64_t *distortion, int *skip, int64_t *psse,
     912             :                             BLOCK_SIZE bs, int64_t ref_best_rd) {
     913           0 :   MACROBLOCKD *xd = &x->e_mbd;
     914             :   int64_t sse;
     915           0 :   int64_t *ret_sse = psse ? psse : &sse;
     916             : 
     917           0 :   assert(bs == xd->mi[0]->sb_type);
     918             : 
     919           0 :   if (cpi->sf.tx_size_search_method == USE_LARGESTALL || xd->lossless) {
     920           0 :     choose_largest_tx_size(cpi, x, rate, distortion, skip, ret_sse, ref_best_rd,
     921             :                            bs);
     922             :   } else {
     923           0 :     choose_tx_size_from_rd(cpi, x, rate, distortion, skip, ret_sse, ref_best_rd,
     924             :                            bs);
     925             :   }
     926           0 : }
     927             : 
     928           0 : static int conditional_skipintra(PREDICTION_MODE mode,
     929             :                                  PREDICTION_MODE best_intra_mode) {
     930           0 :   if (mode == D117_PRED && best_intra_mode != V_PRED &&
     931             :       best_intra_mode != D135_PRED)
     932           0 :     return 1;
     933           0 :   if (mode == D63_PRED && best_intra_mode != V_PRED &&
     934             :       best_intra_mode != D45_PRED)
     935           0 :     return 1;
     936           0 :   if (mode == D207_PRED && best_intra_mode != H_PRED &&
     937             :       best_intra_mode != D45_PRED)
     938           0 :     return 1;
     939           0 :   if (mode == D153_PRED && best_intra_mode != H_PRED &&
     940             :       best_intra_mode != D135_PRED)
     941           0 :     return 1;
     942           0 :   return 0;
     943             : }
     944             : 
     945           0 : static int64_t rd_pick_intra4x4block(VP9_COMP *cpi, MACROBLOCK *x, int row,
     946             :                                      int col, PREDICTION_MODE *best_mode,
     947             :                                      const int *bmode_costs, ENTROPY_CONTEXT *a,
     948             :                                      ENTROPY_CONTEXT *l, int *bestrate,
     949             :                                      int *bestratey, int64_t *bestdistortion,
     950             :                                      BLOCK_SIZE bsize, int64_t rd_thresh) {
     951             :   PREDICTION_MODE mode;
     952           0 :   MACROBLOCKD *const xd = &x->e_mbd;
     953           0 :   int64_t best_rd = rd_thresh;
     954           0 :   struct macroblock_plane *p = &x->plane[0];
     955           0 :   struct macroblockd_plane *pd = &xd->plane[0];
     956           0 :   const int src_stride = p->src.stride;
     957           0 :   const int dst_stride = pd->dst.stride;
     958           0 :   const uint8_t *src_init = &p->src.buf[row * 4 * src_stride + col * 4];
     959           0 :   uint8_t *dst_init = &pd->dst.buf[row * 4 * src_stride + col * 4];
     960             :   ENTROPY_CONTEXT ta[2], tempa[2];
     961             :   ENTROPY_CONTEXT tl[2], templ[2];
     962           0 :   const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
     963           0 :   const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
     964             :   int idx, idy;
     965             :   uint8_t best_dst[8 * 8];
     966             : #if CONFIG_VP9_HIGHBITDEPTH
     967             :   uint16_t best_dst16[8 * 8];
     968             : #endif
     969           0 :   memcpy(ta, a, num_4x4_blocks_wide * sizeof(a[0]));
     970           0 :   memcpy(tl, l, num_4x4_blocks_high * sizeof(l[0]));
     971             : 
     972           0 :   xd->mi[0]->tx_size = TX_4X4;
     973             : 
     974             : #if CONFIG_VP9_HIGHBITDEPTH
     975             :   if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
     976             :     for (mode = DC_PRED; mode <= TM_PRED; ++mode) {
     977             :       int64_t this_rd;
     978             :       int ratey = 0;
     979             :       int64_t distortion = 0;
     980             :       int rate = bmode_costs[mode];
     981             : 
     982             :       if (!(cpi->sf.intra_y_mode_mask[TX_4X4] & (1 << mode))) continue;
     983             : 
     984             :       // Only do the oblique modes if the best so far is
     985             :       // one of the neighboring directional modes
     986             :       if (cpi->sf.mode_search_skip_flags & FLAG_SKIP_INTRA_DIRMISMATCH) {
     987             :         if (conditional_skipintra(mode, *best_mode)) continue;
     988             :       }
     989             : 
     990             :       memcpy(tempa, ta, num_4x4_blocks_wide * sizeof(ta[0]));
     991             :       memcpy(templ, tl, num_4x4_blocks_high * sizeof(tl[0]));
     992             : 
     993             :       for (idy = 0; idy < num_4x4_blocks_high; ++idy) {
     994             :         for (idx = 0; idx < num_4x4_blocks_wide; ++idx) {
     995             :           const int block = (row + idy) * 2 + (col + idx);
     996             :           const uint8_t *const src = &src_init[idx * 4 + idy * 4 * src_stride];
     997             :           uint8_t *const dst = &dst_init[idx * 4 + idy * 4 * dst_stride];
     998             :           int16_t *const src_diff =
     999             :               vp9_raster_block_offset_int16(BLOCK_8X8, block, p->src_diff);
    1000             :           tran_low_t *const coeff = BLOCK_OFFSET(x->plane[0].coeff, block);
    1001             :           xd->mi[0]->bmi[block].as_mode = mode;
    1002             :           vp9_predict_intra_block(xd, 1, TX_4X4, mode,
    1003             :                                   x->skip_encode ? src : dst,
    1004             :                                   x->skip_encode ? src_stride : dst_stride, dst,
    1005             :                                   dst_stride, col + idx, row + idy, 0);
    1006             :           vpx_highbd_subtract_block(4, 4, src_diff, 8, src, src_stride, dst,
    1007             :                                     dst_stride, xd->bd);
    1008             :           if (xd->lossless) {
    1009             :             const scan_order *so = &vp9_default_scan_orders[TX_4X4];
    1010             :             const int coeff_ctx =
    1011             :                 combine_entropy_contexts(tempa[idx], templ[idy]);
    1012             :             vp9_highbd_fwht4x4(src_diff, coeff, 8);
    1013             :             vp9_regular_quantize_b_4x4(x, 0, block, so->scan, so->iscan);
    1014             :             ratey += cost_coeffs(x, 0, block, TX_4X4, coeff_ctx, so->scan,
    1015             :                                  so->neighbors, cpi->sf.use_fast_coef_costing);
    1016             :             tempa[idx] = templ[idy] = (x->plane[0].eobs[block] > 0 ? 1 : 0);
    1017             :             if (RDCOST(x->rdmult, x->rddiv, ratey, distortion) >= best_rd)
    1018             :               goto next_highbd;
    1019             :             vp9_highbd_iwht4x4_add(BLOCK_OFFSET(pd->dqcoeff, block), dst,
    1020             :                                    dst_stride, p->eobs[block], xd->bd);
    1021             :           } else {
    1022             :             int64_t unused;
    1023             :             const TX_TYPE tx_type = get_tx_type_4x4(PLANE_TYPE_Y, xd, block);
    1024             :             const scan_order *so = &vp9_scan_orders[TX_4X4][tx_type];
    1025             :             const int coeff_ctx =
    1026             :                 combine_entropy_contexts(tempa[idx], templ[idy]);
    1027             :             if (tx_type == DCT_DCT)
    1028             :               vpx_highbd_fdct4x4(src_diff, coeff, 8);
    1029             :             else
    1030             :               vp9_highbd_fht4x4(src_diff, coeff, 8, tx_type);
    1031             :             vp9_regular_quantize_b_4x4(x, 0, block, so->scan, so->iscan);
    1032             :             ratey += cost_coeffs(x, 0, block, TX_4X4, coeff_ctx, so->scan,
    1033             :                                  so->neighbors, cpi->sf.use_fast_coef_costing);
    1034             :             distortion += vp9_highbd_block_error_dispatch(
    1035             :                               coeff, BLOCK_OFFSET(pd->dqcoeff, block), 16,
    1036             :                               &unused, xd->bd) >>
    1037             :                           2;
    1038             :             tempa[idx] = templ[idy] = (x->plane[0].eobs[block] > 0 ? 1 : 0);
    1039             :             if (RDCOST(x->rdmult, x->rddiv, ratey, distortion) >= best_rd)
    1040             :               goto next_highbd;
    1041             :             vp9_highbd_iht4x4_add(tx_type, BLOCK_OFFSET(pd->dqcoeff, block),
    1042             :                                   dst, dst_stride, p->eobs[block], xd->bd);
    1043             :           }
    1044             :         }
    1045             :       }
    1046             : 
    1047             :       rate += ratey;
    1048             :       this_rd = RDCOST(x->rdmult, x->rddiv, rate, distortion);
    1049             : 
    1050             :       if (this_rd < best_rd) {
    1051             :         *bestrate = rate;
    1052             :         *bestratey = ratey;
    1053             :         *bestdistortion = distortion;
    1054             :         best_rd = this_rd;
    1055             :         *best_mode = mode;
    1056             :         memcpy(a, tempa, num_4x4_blocks_wide * sizeof(tempa[0]));
    1057             :         memcpy(l, templ, num_4x4_blocks_high * sizeof(templ[0]));
    1058             :         for (idy = 0; idy < num_4x4_blocks_high * 4; ++idy) {
    1059             :           memcpy(best_dst16 + idy * 8,
    1060             :                  CONVERT_TO_SHORTPTR(dst_init + idy * dst_stride),
    1061             :                  num_4x4_blocks_wide * 4 * sizeof(uint16_t));
    1062             :         }
    1063             :       }
    1064             :     next_highbd : {}
    1065             :     }
    1066             :     if (best_rd >= rd_thresh || x->skip_encode) return best_rd;
    1067             : 
    1068             :     for (idy = 0; idy < num_4x4_blocks_high * 4; ++idy) {
    1069             :       memcpy(CONVERT_TO_SHORTPTR(dst_init + idy * dst_stride),
    1070             :              best_dst16 + idy * 8, num_4x4_blocks_wide * 4 * sizeof(uint16_t));
    1071             :     }
    1072             : 
    1073             :     return best_rd;
    1074             :   }
    1075             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    1076             : 
    1077           0 :   for (mode = DC_PRED; mode <= TM_PRED; ++mode) {
    1078             :     int64_t this_rd;
    1079           0 :     int ratey = 0;
    1080           0 :     int64_t distortion = 0;
    1081           0 :     int rate = bmode_costs[mode];
    1082             : 
    1083           0 :     if (!(cpi->sf.intra_y_mode_mask[TX_4X4] & (1 << mode))) continue;
    1084             : 
    1085             :     // Only do the oblique modes if the best so far is
    1086             :     // one of the neighboring directional modes
    1087           0 :     if (cpi->sf.mode_search_skip_flags & FLAG_SKIP_INTRA_DIRMISMATCH) {
    1088           0 :       if (conditional_skipintra(mode, *best_mode)) continue;
    1089             :     }
    1090             : 
    1091           0 :     memcpy(tempa, ta, num_4x4_blocks_wide * sizeof(ta[0]));
    1092           0 :     memcpy(templ, tl, num_4x4_blocks_high * sizeof(tl[0]));
    1093             : 
    1094           0 :     for (idy = 0; idy < num_4x4_blocks_high; ++idy) {
    1095           0 :       for (idx = 0; idx < num_4x4_blocks_wide; ++idx) {
    1096           0 :         const int block = (row + idy) * 2 + (col + idx);
    1097           0 :         const uint8_t *const src = &src_init[idx * 4 + idy * 4 * src_stride];
    1098           0 :         uint8_t *const dst = &dst_init[idx * 4 + idy * 4 * dst_stride];
    1099           0 :         int16_t *const src_diff =
    1100           0 :             vp9_raster_block_offset_int16(BLOCK_8X8, block, p->src_diff);
    1101           0 :         tran_low_t *const coeff = BLOCK_OFFSET(x->plane[0].coeff, block);
    1102           0 :         xd->mi[0]->bmi[block].as_mode = mode;
    1103           0 :         vp9_predict_intra_block(xd, 1, TX_4X4, mode, x->skip_encode ? src : dst,
    1104           0 :                                 x->skip_encode ? src_stride : dst_stride, dst,
    1105             :                                 dst_stride, col + idx, row + idy, 0);
    1106           0 :         vpx_subtract_block(4, 4, src_diff, 8, src, src_stride, dst, dst_stride);
    1107             : 
    1108           0 :         if (xd->lossless) {
    1109           0 :           const scan_order *so = &vp9_default_scan_orders[TX_4X4];
    1110           0 :           const int coeff_ctx =
    1111           0 :               combine_entropy_contexts(tempa[idx], templ[idy]);
    1112           0 :           vp9_fwht4x4(src_diff, coeff, 8);
    1113           0 :           vp9_regular_quantize_b_4x4(x, 0, block, so->scan, so->iscan);
    1114           0 :           ratey += cost_coeffs(x, 0, block, TX_4X4, coeff_ctx, so->scan,
    1115             :                                so->neighbors, cpi->sf.use_fast_coef_costing);
    1116           0 :           tempa[idx] = templ[idy] = (x->plane[0].eobs[block] > 0) ? 1 : 0;
    1117           0 :           if (RDCOST(x->rdmult, x->rddiv, ratey, distortion) >= best_rd)
    1118           0 :             goto next;
    1119           0 :           vp9_iwht4x4_add(BLOCK_OFFSET(pd->dqcoeff, block), dst, dst_stride,
    1120           0 :                           p->eobs[block]);
    1121             :         } else {
    1122             :           int64_t unused;
    1123           0 :           const TX_TYPE tx_type = get_tx_type_4x4(PLANE_TYPE_Y, xd, block);
    1124           0 :           const scan_order *so = &vp9_scan_orders[TX_4X4][tx_type];
    1125           0 :           const int coeff_ctx =
    1126           0 :               combine_entropy_contexts(tempa[idx], templ[idy]);
    1127           0 :           vp9_fht4x4(src_diff, coeff, 8, tx_type);
    1128           0 :           vp9_regular_quantize_b_4x4(x, 0, block, so->scan, so->iscan);
    1129           0 :           ratey += cost_coeffs(x, 0, block, TX_4X4, coeff_ctx, so->scan,
    1130             :                                so->neighbors, cpi->sf.use_fast_coef_costing);
    1131           0 :           tempa[idx] = templ[idy] = (x->plane[0].eobs[block] > 0) ? 1 : 0;
    1132             : #if CONFIG_VP9_HIGHBITDEPTH
    1133             :           distortion +=
    1134             :               vp9_highbd_block_error_8bit(
    1135             :                   coeff, BLOCK_OFFSET(pd->dqcoeff, block), 16, &unused) >>
    1136             :               2;
    1137             : #else
    1138           0 :           distortion += vp9_block_error(coeff, BLOCK_OFFSET(pd->dqcoeff, block),
    1139           0 :                                         16, &unused) >>
    1140             :                         2;
    1141             : #endif
    1142           0 :           if (RDCOST(x->rdmult, x->rddiv, ratey, distortion) >= best_rd)
    1143           0 :             goto next;
    1144           0 :           vp9_iht4x4_add(tx_type, BLOCK_OFFSET(pd->dqcoeff, block), dst,
    1145           0 :                          dst_stride, p->eobs[block]);
    1146             :         }
    1147             :       }
    1148             :     }
    1149             : 
    1150           0 :     rate += ratey;
    1151           0 :     this_rd = RDCOST(x->rdmult, x->rddiv, rate, distortion);
    1152             : 
    1153           0 :     if (this_rd < best_rd) {
    1154           0 :       *bestrate = rate;
    1155           0 :       *bestratey = ratey;
    1156           0 :       *bestdistortion = distortion;
    1157           0 :       best_rd = this_rd;
    1158           0 :       *best_mode = mode;
    1159           0 :       memcpy(a, tempa, num_4x4_blocks_wide * sizeof(tempa[0]));
    1160           0 :       memcpy(l, templ, num_4x4_blocks_high * sizeof(templ[0]));
    1161           0 :       for (idy = 0; idy < num_4x4_blocks_high * 4; ++idy)
    1162           0 :         memcpy(best_dst + idy * 8, dst_init + idy * dst_stride,
    1163           0 :                num_4x4_blocks_wide * 4);
    1164             :     }
    1165             :   next : {}
    1166             :   }
    1167             : 
    1168           0 :   if (best_rd >= rd_thresh || x->skip_encode) return best_rd;
    1169             : 
    1170           0 :   for (idy = 0; idy < num_4x4_blocks_high * 4; ++idy)
    1171           0 :     memcpy(dst_init + idy * dst_stride, best_dst + idy * 8,
    1172           0 :            num_4x4_blocks_wide * 4);
    1173             : 
    1174           0 :   return best_rd;
    1175             : }
    1176             : 
    1177           0 : static int64_t rd_pick_intra_sub_8x8_y_mode(VP9_COMP *cpi, MACROBLOCK *mb,
    1178             :                                             int *rate, int *rate_y,
    1179             :                                             int64_t *distortion,
    1180             :                                             int64_t best_rd) {
    1181             :   int i, j;
    1182           0 :   const MACROBLOCKD *const xd = &mb->e_mbd;
    1183           0 :   MODE_INFO *const mic = xd->mi[0];
    1184           0 :   const MODE_INFO *above_mi = xd->above_mi;
    1185           0 :   const MODE_INFO *left_mi = xd->left_mi;
    1186           0 :   const BLOCK_SIZE bsize = xd->mi[0]->sb_type;
    1187           0 :   const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
    1188           0 :   const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
    1189             :   int idx, idy;
    1190           0 :   int cost = 0;
    1191           0 :   int64_t total_distortion = 0;
    1192           0 :   int tot_rate_y = 0;
    1193           0 :   int64_t total_rd = 0;
    1194           0 :   const int *bmode_costs = cpi->mbmode_cost;
    1195             : 
    1196             :   // Pick modes for each sub-block (of size 4x4, 4x8, or 8x4) in an 8x8 block.
    1197           0 :   for (idy = 0; idy < 2; idy += num_4x4_blocks_high) {
    1198           0 :     for (idx = 0; idx < 2; idx += num_4x4_blocks_wide) {
    1199           0 :       PREDICTION_MODE best_mode = DC_PRED;
    1200           0 :       int r = INT_MAX, ry = INT_MAX;
    1201           0 :       int64_t d = INT64_MAX, this_rd = INT64_MAX;
    1202           0 :       i = idy * 2 + idx;
    1203           0 :       if (cpi->common.frame_type == KEY_FRAME) {
    1204           0 :         const PREDICTION_MODE A = vp9_above_block_mode(mic, above_mi, i);
    1205           0 :         const PREDICTION_MODE L = vp9_left_block_mode(mic, left_mi, i);
    1206             : 
    1207           0 :         bmode_costs = cpi->y_mode_costs[A][L];
    1208             :       }
    1209             : 
    1210           0 :       this_rd = rd_pick_intra4x4block(
    1211             :           cpi, mb, idy, idx, &best_mode, bmode_costs,
    1212           0 :           xd->plane[0].above_context + idx, xd->plane[0].left_context + idy, &r,
    1213             :           &ry, &d, bsize, best_rd - total_rd);
    1214             : 
    1215           0 :       if (this_rd >= best_rd - total_rd) return INT64_MAX;
    1216             : 
    1217           0 :       total_rd += this_rd;
    1218           0 :       cost += r;
    1219           0 :       total_distortion += d;
    1220           0 :       tot_rate_y += ry;
    1221             : 
    1222           0 :       mic->bmi[i].as_mode = best_mode;
    1223           0 :       for (j = 1; j < num_4x4_blocks_high; ++j)
    1224           0 :         mic->bmi[i + j * 2].as_mode = best_mode;
    1225           0 :       for (j = 1; j < num_4x4_blocks_wide; ++j)
    1226           0 :         mic->bmi[i + j].as_mode = best_mode;
    1227             : 
    1228           0 :       if (total_rd >= best_rd) return INT64_MAX;
    1229             :     }
    1230             :   }
    1231             : 
    1232           0 :   *rate = cost;
    1233           0 :   *rate_y = tot_rate_y;
    1234           0 :   *distortion = total_distortion;
    1235           0 :   mic->mode = mic->bmi[3].as_mode;
    1236             : 
    1237           0 :   return RDCOST(mb->rdmult, mb->rddiv, cost, total_distortion);
    1238             : }
    1239             : 
    1240             : // This function is used only for intra_only frames
    1241           0 : static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x, int *rate,
    1242             :                                       int *rate_tokenonly, int64_t *distortion,
    1243             :                                       int *skippable, BLOCK_SIZE bsize,
    1244             :                                       int64_t best_rd) {
    1245             :   PREDICTION_MODE mode;
    1246           0 :   PREDICTION_MODE mode_selected = DC_PRED;
    1247           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    1248           0 :   MODE_INFO *const mic = xd->mi[0];
    1249             :   int this_rate, this_rate_tokenonly, s;
    1250             :   int64_t this_distortion, this_rd;
    1251           0 :   TX_SIZE best_tx = TX_4X4;
    1252             :   int *bmode_costs;
    1253           0 :   const MODE_INFO *above_mi = xd->above_mi;
    1254           0 :   const MODE_INFO *left_mi = xd->left_mi;
    1255           0 :   const PREDICTION_MODE A = vp9_above_block_mode(mic, above_mi, 0);
    1256           0 :   const PREDICTION_MODE L = vp9_left_block_mode(mic, left_mi, 0);
    1257           0 :   bmode_costs = cpi->y_mode_costs[A][L];
    1258             : 
    1259           0 :   memset(x->skip_txfm, SKIP_TXFM_NONE, sizeof(x->skip_txfm));
    1260             :   /* Y Search for intra prediction mode */
    1261           0 :   for (mode = DC_PRED; mode <= TM_PRED; mode++) {
    1262           0 :     if (cpi->sf.use_nonrd_pick_mode) {
    1263             :       // These speed features are turned on in hybrid non-RD and RD mode
    1264             :       // for key frame coding in the context of real-time setting.
    1265           0 :       if (conditional_skipintra(mode, mode_selected)) continue;
    1266           0 :       if (*skippable) break;
    1267             :     }
    1268             : 
    1269           0 :     mic->mode = mode;
    1270             : 
    1271           0 :     super_block_yrd(cpi, x, &this_rate_tokenonly, &this_distortion, &s, NULL,
    1272             :                     bsize, best_rd);
    1273             : 
    1274           0 :     if (this_rate_tokenonly == INT_MAX) continue;
    1275             : 
    1276           0 :     this_rate = this_rate_tokenonly + bmode_costs[mode];
    1277           0 :     this_rd = RDCOST(x->rdmult, x->rddiv, this_rate, this_distortion);
    1278             : 
    1279           0 :     if (this_rd < best_rd) {
    1280           0 :       mode_selected = mode;
    1281           0 :       best_rd = this_rd;
    1282           0 :       best_tx = mic->tx_size;
    1283           0 :       *rate = this_rate;
    1284           0 :       *rate_tokenonly = this_rate_tokenonly;
    1285           0 :       *distortion = this_distortion;
    1286           0 :       *skippable = s;
    1287             :     }
    1288             :   }
    1289             : 
    1290           0 :   mic->mode = mode_selected;
    1291           0 :   mic->tx_size = best_tx;
    1292             : 
    1293           0 :   return best_rd;
    1294             : }
    1295             : 
    1296             : // Return value 0: early termination triggered, no valid rd cost available;
    1297             : //              1: rd cost values are valid.
    1298           0 : static int super_block_uvrd(const VP9_COMP *cpi, MACROBLOCK *x, int *rate,
    1299             :                             int64_t *distortion, int *skippable, int64_t *sse,
    1300             :                             BLOCK_SIZE bsize, int64_t ref_best_rd) {
    1301           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    1302           0 :   MODE_INFO *const mi = xd->mi[0];
    1303           0 :   const TX_SIZE uv_tx_size = get_uv_tx_size(mi, &xd->plane[1]);
    1304             :   int plane;
    1305           0 :   int pnrate = 0, pnskip = 1;
    1306           0 :   int64_t pndist = 0, pnsse = 0;
    1307           0 :   int is_cost_valid = 1;
    1308             : 
    1309           0 :   if (ref_best_rd < 0) is_cost_valid = 0;
    1310             : 
    1311           0 :   if (is_inter_block(mi) && is_cost_valid) {
    1312             :     int plane;
    1313           0 :     for (plane = 1; plane < MAX_MB_PLANE; ++plane)
    1314           0 :       vp9_subtract_plane(x, bsize, plane);
    1315             :   }
    1316             : 
    1317           0 :   *rate = 0;
    1318           0 :   *distortion = 0;
    1319           0 :   *sse = 0;
    1320           0 :   *skippable = 1;
    1321             : 
    1322           0 :   for (plane = 1; plane < MAX_MB_PLANE; ++plane) {
    1323           0 :     txfm_rd_in_plane(cpi, x, &pnrate, &pndist, &pnskip, &pnsse, ref_best_rd,
    1324             :                      plane, bsize, uv_tx_size, cpi->sf.use_fast_coef_costing);
    1325           0 :     if (pnrate == INT_MAX) {
    1326           0 :       is_cost_valid = 0;
    1327           0 :       break;
    1328             :     }
    1329           0 :     *rate += pnrate;
    1330           0 :     *distortion += pndist;
    1331           0 :     *sse += pnsse;
    1332           0 :     *skippable &= pnskip;
    1333             :   }
    1334             : 
    1335           0 :   if (!is_cost_valid) {
    1336             :     // reset cost value
    1337           0 :     *rate = INT_MAX;
    1338           0 :     *distortion = INT64_MAX;
    1339           0 :     *sse = INT64_MAX;
    1340           0 :     *skippable = 0;
    1341             :   }
    1342             : 
    1343           0 :   return is_cost_valid;
    1344             : }
    1345             : 
    1346           0 : static int64_t rd_pick_intra_sbuv_mode(VP9_COMP *cpi, MACROBLOCK *x,
    1347             :                                        PICK_MODE_CONTEXT *ctx, int *rate,
    1348             :                                        int *rate_tokenonly, int64_t *distortion,
    1349             :                                        int *skippable, BLOCK_SIZE bsize,
    1350             :                                        TX_SIZE max_tx_size) {
    1351           0 :   MACROBLOCKD *xd = &x->e_mbd;
    1352             :   PREDICTION_MODE mode;
    1353           0 :   PREDICTION_MODE mode_selected = DC_PRED;
    1354           0 :   int64_t best_rd = INT64_MAX, this_rd;
    1355             :   int this_rate_tokenonly, this_rate, s;
    1356             :   int64_t this_distortion, this_sse;
    1357             : 
    1358           0 :   memset(x->skip_txfm, SKIP_TXFM_NONE, sizeof(x->skip_txfm));
    1359           0 :   for (mode = DC_PRED; mode <= TM_PRED; ++mode) {
    1360           0 :     if (!(cpi->sf.intra_uv_mode_mask[max_tx_size] & (1 << mode))) continue;
    1361             : #if CONFIG_BETTER_HW_COMPATIBILITY && CONFIG_VP9_HIGHBITDEPTH
    1362             :     if ((xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) &&
    1363             :         (xd->above_mi == NULL || xd->left_mi == NULL) && need_top_left[mode])
    1364             :       continue;
    1365             : #endif  // CONFIG_BETTER_HW_COMPATIBILITY && CONFIG_VP9_HIGHBITDEPTH
    1366             : 
    1367           0 :     xd->mi[0]->uv_mode = mode;
    1368             : 
    1369           0 :     if (!super_block_uvrd(cpi, x, &this_rate_tokenonly, &this_distortion, &s,
    1370             :                           &this_sse, bsize, best_rd))
    1371           0 :       continue;
    1372           0 :     this_rate =
    1373           0 :         this_rate_tokenonly +
    1374           0 :         cpi->intra_uv_mode_cost[cpi->common.frame_type][xd->mi[0]->mode][mode];
    1375           0 :     this_rd = RDCOST(x->rdmult, x->rddiv, this_rate, this_distortion);
    1376             : 
    1377           0 :     if (this_rd < best_rd) {
    1378           0 :       mode_selected = mode;
    1379           0 :       best_rd = this_rd;
    1380           0 :       *rate = this_rate;
    1381           0 :       *rate_tokenonly = this_rate_tokenonly;
    1382           0 :       *distortion = this_distortion;
    1383           0 :       *skippable = s;
    1384           0 :       if (!x->select_tx_size) swap_block_ptr(x, ctx, 2, 0, 1, MAX_MB_PLANE);
    1385             :     }
    1386             :   }
    1387             : 
    1388           0 :   xd->mi[0]->uv_mode = mode_selected;
    1389           0 :   return best_rd;
    1390             : }
    1391             : 
    1392           0 : static int64_t rd_sbuv_dcpred(const VP9_COMP *cpi, MACROBLOCK *x, int *rate,
    1393             :                               int *rate_tokenonly, int64_t *distortion,
    1394             :                               int *skippable, BLOCK_SIZE bsize) {
    1395           0 :   const VP9_COMMON *cm = &cpi->common;
    1396             :   int64_t unused;
    1397             : 
    1398           0 :   x->e_mbd.mi[0]->uv_mode = DC_PRED;
    1399           0 :   memset(x->skip_txfm, SKIP_TXFM_NONE, sizeof(x->skip_txfm));
    1400           0 :   super_block_uvrd(cpi, x, rate_tokenonly, distortion, skippable, &unused,
    1401             :                    bsize, INT64_MAX);
    1402           0 :   *rate =
    1403           0 :       *rate_tokenonly +
    1404           0 :       cpi->intra_uv_mode_cost[cm->frame_type][x->e_mbd.mi[0]->mode][DC_PRED];
    1405           0 :   return RDCOST(x->rdmult, x->rddiv, *rate, *distortion);
    1406             : }
    1407             : 
    1408           0 : static void choose_intra_uv_mode(VP9_COMP *cpi, MACROBLOCK *const x,
    1409             :                                  PICK_MODE_CONTEXT *ctx, BLOCK_SIZE bsize,
    1410             :                                  TX_SIZE max_tx_size, int *rate_uv,
    1411             :                                  int *rate_uv_tokenonly, int64_t *dist_uv,
    1412             :                                  int *skip_uv, PREDICTION_MODE *mode_uv) {
    1413             :   // Use an estimated rd for uv_intra based on DC_PRED if the
    1414             :   // appropriate speed flag is set.
    1415           0 :   if (cpi->sf.use_uv_intra_rd_estimate) {
    1416           0 :     rd_sbuv_dcpred(cpi, x, rate_uv, rate_uv_tokenonly, dist_uv, skip_uv,
    1417             :                    bsize < BLOCK_8X8 ? BLOCK_8X8 : bsize);
    1418             :     // Else do a proper rd search for each possible transform size that may
    1419             :     // be considered in the main rd loop.
    1420             :   } else {
    1421           0 :     rd_pick_intra_sbuv_mode(cpi, x, ctx, rate_uv, rate_uv_tokenonly, dist_uv,
    1422             :                             skip_uv, bsize < BLOCK_8X8 ? BLOCK_8X8 : bsize,
    1423             :                             max_tx_size);
    1424             :   }
    1425           0 :   *mode_uv = x->e_mbd.mi[0]->uv_mode;
    1426           0 : }
    1427             : 
    1428           0 : static int cost_mv_ref(const VP9_COMP *cpi, PREDICTION_MODE mode,
    1429             :                        int mode_context) {
    1430           0 :   assert(is_inter_mode(mode));
    1431           0 :   return cpi->inter_mode_cost[mode_context][INTER_OFFSET(mode)];
    1432             : }
    1433             : 
    1434           0 : static int set_and_cost_bmi_mvs(VP9_COMP *cpi, MACROBLOCK *x, MACROBLOCKD *xd,
    1435             :                                 int i, PREDICTION_MODE mode, int_mv this_mv[2],
    1436             :                                 int_mv frame_mv[MB_MODE_COUNT][MAX_REF_FRAMES],
    1437             :                                 int_mv seg_mvs[MAX_REF_FRAMES],
    1438             :                                 int_mv *best_ref_mv[2], const int *mvjcost,
    1439             :                                 int *mvcost[2]) {
    1440           0 :   MODE_INFO *const mi = xd->mi[0];
    1441           0 :   const MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;
    1442           0 :   int thismvcost = 0;
    1443             :   int idx, idy;
    1444           0 :   const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[mi->sb_type];
    1445           0 :   const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[mi->sb_type];
    1446           0 :   const int is_compound = has_second_ref(mi);
    1447             : 
    1448           0 :   switch (mode) {
    1449             :     case NEWMV:
    1450           0 :       this_mv[0].as_int = seg_mvs[mi->ref_frame[0]].as_int;
    1451           0 :       thismvcost += vp9_mv_bit_cost(&this_mv[0].as_mv, &best_ref_mv[0]->as_mv,
    1452             :                                     mvjcost, mvcost, MV_COST_WEIGHT_SUB);
    1453           0 :       if (is_compound) {
    1454           0 :         this_mv[1].as_int = seg_mvs[mi->ref_frame[1]].as_int;
    1455           0 :         thismvcost += vp9_mv_bit_cost(&this_mv[1].as_mv, &best_ref_mv[1]->as_mv,
    1456             :                                       mvjcost, mvcost, MV_COST_WEIGHT_SUB);
    1457             :       }
    1458           0 :       break;
    1459             :     case NEARMV:
    1460             :     case NEARESTMV:
    1461           0 :       this_mv[0].as_int = frame_mv[mode][mi->ref_frame[0]].as_int;
    1462           0 :       if (is_compound)
    1463           0 :         this_mv[1].as_int = frame_mv[mode][mi->ref_frame[1]].as_int;
    1464           0 :       break;
    1465             :     case ZEROMV:
    1466           0 :       this_mv[0].as_int = 0;
    1467           0 :       if (is_compound) this_mv[1].as_int = 0;
    1468           0 :       break;
    1469           0 :     default: break;
    1470             :   }
    1471             : 
    1472           0 :   mi->bmi[i].as_mv[0].as_int = this_mv[0].as_int;
    1473           0 :   if (is_compound) mi->bmi[i].as_mv[1].as_int = this_mv[1].as_int;
    1474             : 
    1475           0 :   mi->bmi[i].as_mode = mode;
    1476             : 
    1477           0 :   for (idy = 0; idy < num_4x4_blocks_high; ++idy)
    1478           0 :     for (idx = 0; idx < num_4x4_blocks_wide; ++idx)
    1479           0 :       memmove(&mi->bmi[i + idy * 2 + idx], &mi->bmi[i], sizeof(mi->bmi[i]));
    1480             : 
    1481           0 :   return cost_mv_ref(cpi, mode, mbmi_ext->mode_context[mi->ref_frame[0]]) +
    1482             :          thismvcost;
    1483             : }
    1484             : 
    1485           0 : static int64_t encode_inter_mb_segment(VP9_COMP *cpi, MACROBLOCK *x,
    1486             :                                        int64_t best_yrd, int i, int *labelyrate,
    1487             :                                        int64_t *distortion, int64_t *sse,
    1488             :                                        ENTROPY_CONTEXT *ta, ENTROPY_CONTEXT *tl,
    1489             :                                        int mi_row, int mi_col) {
    1490             :   int k;
    1491           0 :   MACROBLOCKD *xd = &x->e_mbd;
    1492           0 :   struct macroblockd_plane *const pd = &xd->plane[0];
    1493           0 :   struct macroblock_plane *const p = &x->plane[0];
    1494           0 :   MODE_INFO *const mi = xd->mi[0];
    1495           0 :   const BLOCK_SIZE plane_bsize = get_plane_block_size(mi->sb_type, pd);
    1496           0 :   const int width = 4 * num_4x4_blocks_wide_lookup[plane_bsize];
    1497           0 :   const int height = 4 * num_4x4_blocks_high_lookup[plane_bsize];
    1498             :   int idx, idy;
    1499             : 
    1500           0 :   const uint8_t *const src =
    1501           0 :       &p->src.buf[vp9_raster_block_offset(BLOCK_8X8, i, p->src.stride)];
    1502           0 :   uint8_t *const dst =
    1503           0 :       &pd->dst.buf[vp9_raster_block_offset(BLOCK_8X8, i, pd->dst.stride)];
    1504           0 :   int64_t thisdistortion = 0, thissse = 0;
    1505           0 :   int thisrate = 0, ref;
    1506           0 :   const scan_order *so = &vp9_default_scan_orders[TX_4X4];
    1507           0 :   const int is_compound = has_second_ref(mi);
    1508           0 :   const InterpKernel *kernel = vp9_filter_kernels[mi->interp_filter];
    1509             : 
    1510           0 :   for (ref = 0; ref < 1 + is_compound; ++ref) {
    1511           0 :     const int bw = b_width_log2_lookup[BLOCK_8X8];
    1512           0 :     const int h = 4 * (i >> bw);
    1513           0 :     const int w = 4 * (i & ((1 << bw) - 1));
    1514           0 :     const struct scale_factors *sf = &xd->block_refs[ref]->sf;
    1515           0 :     int y_stride = pd->pre[ref].stride;
    1516           0 :     uint8_t *pre = pd->pre[ref].buf + (h * pd->pre[ref].stride + w);
    1517             : 
    1518           0 :     if (vp9_is_scaled(sf)) {
    1519           0 :       const int x_start = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x));
    1520           0 :       const int y_start = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y));
    1521             : 
    1522           0 :       y_stride = xd->block_refs[ref]->buf->y_stride;
    1523           0 :       pre = xd->block_refs[ref]->buf->y_buffer;
    1524           0 :       pre += scaled_buffer_offset(x_start + w, y_start + h, y_stride, sf);
    1525             :     }
    1526             : #if CONFIG_VP9_HIGHBITDEPTH
    1527             :     if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    1528             :       vp9_highbd_build_inter_predictor(
    1529             :           pre, y_stride, dst, pd->dst.stride, &mi->bmi[i].as_mv[ref].as_mv,
    1530             :           &xd->block_refs[ref]->sf, width, height, ref, kernel, MV_PRECISION_Q3,
    1531             :           mi_col * MI_SIZE + 4 * (i % 2), mi_row * MI_SIZE + 4 * (i / 2),
    1532             :           xd->bd);
    1533             :     } else {
    1534             :       vp9_build_inter_predictor(
    1535             :           pre, y_stride, dst, pd->dst.stride, &mi->bmi[i].as_mv[ref].as_mv,
    1536             :           &xd->block_refs[ref]->sf, width, height, ref, kernel, MV_PRECISION_Q3,
    1537             :           mi_col * MI_SIZE + 4 * (i % 2), mi_row * MI_SIZE + 4 * (i / 2));
    1538             :     }
    1539             : #else
    1540           0 :     vp9_build_inter_predictor(
    1541           0 :         pre, y_stride, dst, pd->dst.stride, &mi->bmi[i].as_mv[ref].as_mv,
    1542           0 :         &xd->block_refs[ref]->sf, width, height, ref, kernel, MV_PRECISION_Q3,
    1543           0 :         mi_col * MI_SIZE + 4 * (i % 2), mi_row * MI_SIZE + 4 * (i / 2));
    1544             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    1545             :   }
    1546             : 
    1547             : #if CONFIG_VP9_HIGHBITDEPTH
    1548             :   if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    1549             :     vpx_highbd_subtract_block(
    1550             :         height, width, vp9_raster_block_offset_int16(BLOCK_8X8, i, p->src_diff),
    1551             :         8, src, p->src.stride, dst, pd->dst.stride, xd->bd);
    1552             :   } else {
    1553             :     vpx_subtract_block(height, width,
    1554             :                        vp9_raster_block_offset_int16(BLOCK_8X8, i, p->src_diff),
    1555             :                        8, src, p->src.stride, dst, pd->dst.stride);
    1556             :   }
    1557             : #else
    1558           0 :   vpx_subtract_block(height, width,
    1559           0 :                      vp9_raster_block_offset_int16(BLOCK_8X8, i, p->src_diff),
    1560           0 :                      8, src, p->src.stride, dst, pd->dst.stride);
    1561             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    1562             : 
    1563           0 :   k = i;
    1564           0 :   for (idy = 0; idy < height / 4; ++idy) {
    1565           0 :     for (idx = 0; idx < width / 4; ++idx) {
    1566             : #if CONFIG_VP9_HIGHBITDEPTH
    1567             :       const int bd = (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) ? xd->bd : 8;
    1568             : #endif
    1569             :       int64_t ssz, rd, rd1, rd2;
    1570             :       tran_low_t *coeff;
    1571             :       int coeff_ctx;
    1572           0 :       k += (idy * 2 + idx);
    1573           0 :       coeff_ctx = combine_entropy_contexts(ta[k & 1], tl[k >> 1]);
    1574           0 :       coeff = BLOCK_OFFSET(p->coeff, k);
    1575           0 :       x->fwd_txm4x4(vp9_raster_block_offset_int16(BLOCK_8X8, k, p->src_diff),
    1576             :                     coeff, 8);
    1577           0 :       vp9_regular_quantize_b_4x4(x, 0, k, so->scan, so->iscan);
    1578             : #if CONFIG_VP9_HIGHBITDEPTH
    1579             :       thisdistortion += vp9_highbd_block_error_dispatch(
    1580             :           coeff, BLOCK_OFFSET(pd->dqcoeff, k), 16, &ssz, bd);
    1581             : #else
    1582           0 :       thisdistortion +=
    1583           0 :           vp9_block_error(coeff, BLOCK_OFFSET(pd->dqcoeff, k), 16, &ssz);
    1584             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    1585           0 :       thissse += ssz;
    1586           0 :       thisrate += cost_coeffs(x, 0, k, TX_4X4, coeff_ctx, so->scan,
    1587             :                               so->neighbors, cpi->sf.use_fast_coef_costing);
    1588           0 :       ta[k & 1] = tl[k >> 1] = (x->plane[0].eobs[k] > 0) ? 1 : 0;
    1589           0 :       rd1 = RDCOST(x->rdmult, x->rddiv, thisrate, thisdistortion >> 2);
    1590           0 :       rd2 = RDCOST(x->rdmult, x->rddiv, 0, thissse >> 2);
    1591           0 :       rd = VPXMIN(rd1, rd2);
    1592           0 :       if (rd >= best_yrd) return INT64_MAX;
    1593             :     }
    1594             :   }
    1595             : 
    1596           0 :   *distortion = thisdistortion >> 2;
    1597           0 :   *labelyrate = thisrate;
    1598           0 :   *sse = thissse >> 2;
    1599             : 
    1600           0 :   return RDCOST(x->rdmult, x->rddiv, *labelyrate, *distortion);
    1601             : }
    1602             : 
    1603             : typedef struct {
    1604             :   int eobs;
    1605             :   int brate;
    1606             :   int byrate;
    1607             :   int64_t bdist;
    1608             :   int64_t bsse;
    1609             :   int64_t brdcost;
    1610             :   int_mv mvs[2];
    1611             :   ENTROPY_CONTEXT ta[2];
    1612             :   ENTROPY_CONTEXT tl[2];
    1613             : } SEG_RDSTAT;
    1614             : 
    1615             : typedef struct {
    1616             :   int_mv *ref_mv[2];
    1617             :   int_mv mvp;
    1618             : 
    1619             :   int64_t segment_rd;
    1620             :   int r;
    1621             :   int64_t d;
    1622             :   int64_t sse;
    1623             :   int segment_yrate;
    1624             :   PREDICTION_MODE modes[4];
    1625             :   SEG_RDSTAT rdstat[4][INTER_MODES];
    1626             :   int mvthresh;
    1627             : } BEST_SEG_INFO;
    1628             : 
    1629           0 : static INLINE int mv_check_bounds(const MvLimits *mv_limits, const MV *mv) {
    1630           0 :   return (mv->row >> 3) < mv_limits->row_min ||
    1631           0 :          (mv->row >> 3) > mv_limits->row_max ||
    1632           0 :          (mv->col >> 3) < mv_limits->col_min ||
    1633           0 :          (mv->col >> 3) > mv_limits->col_max;
    1634             : }
    1635             : 
    1636           0 : static INLINE void mi_buf_shift(MACROBLOCK *x, int i) {
    1637           0 :   MODE_INFO *const mi = x->e_mbd.mi[0];
    1638           0 :   struct macroblock_plane *const p = &x->plane[0];
    1639           0 :   struct macroblockd_plane *const pd = &x->e_mbd.plane[0];
    1640             : 
    1641           0 :   p->src.buf =
    1642           0 :       &p->src.buf[vp9_raster_block_offset(BLOCK_8X8, i, p->src.stride)];
    1643           0 :   assert(((intptr_t)pd->pre[0].buf & 0x7) == 0);
    1644           0 :   pd->pre[0].buf =
    1645           0 :       &pd->pre[0].buf[vp9_raster_block_offset(BLOCK_8X8, i, pd->pre[0].stride)];
    1646           0 :   if (has_second_ref(mi))
    1647           0 :     pd->pre[1].buf =
    1648           0 :         &pd->pre[1]
    1649           0 :              .buf[vp9_raster_block_offset(BLOCK_8X8, i, pd->pre[1].stride)];
    1650           0 : }
    1651             : 
    1652           0 : static INLINE void mi_buf_restore(MACROBLOCK *x, struct buf_2d orig_src,
    1653             :                                   struct buf_2d orig_pre[2]) {
    1654           0 :   MODE_INFO *mi = x->e_mbd.mi[0];
    1655           0 :   x->plane[0].src = orig_src;
    1656           0 :   x->e_mbd.plane[0].pre[0] = orig_pre[0];
    1657           0 :   if (has_second_ref(mi)) x->e_mbd.plane[0].pre[1] = orig_pre[1];
    1658           0 : }
    1659             : 
    1660           0 : static INLINE int mv_has_subpel(const MV *mv) {
    1661           0 :   return (mv->row & 0x0F) || (mv->col & 0x0F);
    1662             : }
    1663             : 
    1664             : // Check if NEARESTMV/NEARMV/ZEROMV is the cheapest way encode zero motion.
    1665             : // TODO(aconverse): Find out if this is still productive then clean up or remove
    1666           0 : static int check_best_zero_mv(const VP9_COMP *cpi,
    1667             :                               const uint8_t mode_context[MAX_REF_FRAMES],
    1668             :                               int_mv frame_mv[MB_MODE_COUNT][MAX_REF_FRAMES],
    1669             :                               int this_mode,
    1670             :                               const MV_REFERENCE_FRAME ref_frames[2]) {
    1671           0 :   if ((this_mode == NEARMV || this_mode == NEARESTMV || this_mode == ZEROMV) &&
    1672           0 :       frame_mv[this_mode][ref_frames[0]].as_int == 0 &&
    1673           0 :       (ref_frames[1] == NONE ||
    1674           0 :        frame_mv[this_mode][ref_frames[1]].as_int == 0)) {
    1675           0 :     int rfc = mode_context[ref_frames[0]];
    1676           0 :     int c1 = cost_mv_ref(cpi, NEARMV, rfc);
    1677           0 :     int c2 = cost_mv_ref(cpi, NEARESTMV, rfc);
    1678           0 :     int c3 = cost_mv_ref(cpi, ZEROMV, rfc);
    1679             : 
    1680           0 :     if (this_mode == NEARMV) {
    1681           0 :       if (c1 > c3) return 0;
    1682           0 :     } else if (this_mode == NEARESTMV) {
    1683           0 :       if (c2 > c3) return 0;
    1684             :     } else {
    1685           0 :       assert(this_mode == ZEROMV);
    1686           0 :       if (ref_frames[1] == NONE) {
    1687           0 :         if ((c3 >= c2 && frame_mv[NEARESTMV][ref_frames[0]].as_int == 0) ||
    1688           0 :             (c3 >= c1 && frame_mv[NEARMV][ref_frames[0]].as_int == 0))
    1689           0 :           return 0;
    1690             :       } else {
    1691           0 :         if ((c3 >= c2 && frame_mv[NEARESTMV][ref_frames[0]].as_int == 0 &&
    1692           0 :              frame_mv[NEARESTMV][ref_frames[1]].as_int == 0) ||
    1693           0 :             (c3 >= c1 && frame_mv[NEARMV][ref_frames[0]].as_int == 0 &&
    1694           0 :              frame_mv[NEARMV][ref_frames[1]].as_int == 0))
    1695           0 :           return 0;
    1696             :       }
    1697             :     }
    1698             :   }
    1699           0 :   return 1;
    1700             : }
    1701             : 
    1702           0 : static void joint_motion_search(VP9_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bsize,
    1703             :                                 int_mv *frame_mv, int mi_row, int mi_col,
    1704             :                                 int_mv single_newmv[MAX_REF_FRAMES],
    1705             :                                 int *rate_mv) {
    1706           0 :   const VP9_COMMON *const cm = &cpi->common;
    1707           0 :   const int pw = 4 * num_4x4_blocks_wide_lookup[bsize];
    1708           0 :   const int ph = 4 * num_4x4_blocks_high_lookup[bsize];
    1709           0 :   MACROBLOCKD *xd = &x->e_mbd;
    1710           0 :   MODE_INFO *mi = xd->mi[0];
    1711           0 :   const int refs[2] = { mi->ref_frame[0],
    1712           0 :                         mi->ref_frame[1] < 0 ? 0 : mi->ref_frame[1] };
    1713             :   int_mv ref_mv[2];
    1714             :   int ite, ref;
    1715           0 :   const InterpKernel *kernel = vp9_filter_kernels[mi->interp_filter];
    1716             :   struct scale_factors sf;
    1717             : 
    1718             :   // Do joint motion search in compound mode to get more accurate mv.
    1719             :   struct buf_2d backup_yv12[2][MAX_MB_PLANE];
    1720           0 :   uint32_t last_besterr[2] = { UINT_MAX, UINT_MAX };
    1721           0 :   const YV12_BUFFER_CONFIG *const scaled_ref_frame[2] = {
    1722           0 :     vp9_get_scaled_ref_frame(cpi, mi->ref_frame[0]),
    1723           0 :     vp9_get_scaled_ref_frame(cpi, mi->ref_frame[1])
    1724             :   };
    1725             : 
    1726             : // Prediction buffer from second frame.
    1727             : #if CONFIG_VP9_HIGHBITDEPTH
    1728             :   DECLARE_ALIGNED(16, uint16_t, second_pred_alloc_16[64 * 64]);
    1729             :   uint8_t *second_pred;
    1730             : #else
    1731             :   DECLARE_ALIGNED(16, uint8_t, second_pred[64 * 64]);
    1732             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    1733             : 
    1734           0 :   for (ref = 0; ref < 2; ++ref) {
    1735           0 :     ref_mv[ref] = x->mbmi_ext->ref_mvs[refs[ref]][0];
    1736             : 
    1737           0 :     if (scaled_ref_frame[ref]) {
    1738             :       int i;
    1739             :       // Swap out the reference frame for a version that's been scaled to
    1740             :       // match the resolution of the current frame, allowing the existing
    1741             :       // motion search code to be used without additional modifications.
    1742           0 :       for (i = 0; i < MAX_MB_PLANE; i++)
    1743           0 :         backup_yv12[ref][i] = xd->plane[i].pre[ref];
    1744           0 :       vp9_setup_pre_planes(xd, ref, scaled_ref_frame[ref], mi_row, mi_col,
    1745             :                            NULL);
    1746             :     }
    1747             : 
    1748           0 :     frame_mv[refs[ref]].as_int = single_newmv[refs[ref]].as_int;
    1749             :   }
    1750             : 
    1751             : // Since we have scaled the reference frames to match the size of the current
    1752             : // frame we must use a unit scaling factor during mode selection.
    1753             : #if CONFIG_VP9_HIGHBITDEPTH
    1754             :   vp9_setup_scale_factors_for_frame(&sf, cm->width, cm->height, cm->width,
    1755             :                                     cm->height, cm->use_highbitdepth);
    1756             : #else
    1757           0 :   vp9_setup_scale_factors_for_frame(&sf, cm->width, cm->height, cm->width,
    1758             :                                     cm->height);
    1759             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    1760             : 
    1761             :   // Allow joint search multiple times iteratively for each reference frame
    1762             :   // and break out of the search loop if it couldn't find a better mv.
    1763           0 :   for (ite = 0; ite < 4; ite++) {
    1764             :     struct buf_2d ref_yv12[2];
    1765           0 :     uint32_t bestsme = UINT_MAX;
    1766           0 :     int sadpb = x->sadperbit16;
    1767             :     MV tmp_mv;
    1768           0 :     int search_range = 3;
    1769             : 
    1770           0 :     const MvLimits tmp_mv_limits = x->mv_limits;
    1771           0 :     int id = ite % 2;  // Even iterations search in the first reference frame,
    1772             :                        // odd iterations search in the second. The predictor
    1773             :                        // found for the 'other' reference frame is factored in.
    1774             : 
    1775             :     // Initialized here because of compiler problem in Visual Studio.
    1776           0 :     ref_yv12[0] = xd->plane[0].pre[0];
    1777           0 :     ref_yv12[1] = xd->plane[0].pre[1];
    1778             : 
    1779             : // Get the prediction block from the 'other' reference frame.
    1780             : #if CONFIG_VP9_HIGHBITDEPTH
    1781             :     if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    1782             :       second_pred = CONVERT_TO_BYTEPTR(second_pred_alloc_16);
    1783             :       vp9_highbd_build_inter_predictor(
    1784             :           ref_yv12[!id].buf, ref_yv12[!id].stride, second_pred, pw,
    1785             :           &frame_mv[refs[!id]].as_mv, &sf, pw, ph, 0, kernel, MV_PRECISION_Q3,
    1786             :           mi_col * MI_SIZE, mi_row * MI_SIZE, xd->bd);
    1787             :     } else {
    1788             :       second_pred = (uint8_t *)second_pred_alloc_16;
    1789             :       vp9_build_inter_predictor(ref_yv12[!id].buf, ref_yv12[!id].stride,
    1790             :                                 second_pred, pw, &frame_mv[refs[!id]].as_mv,
    1791             :                                 &sf, pw, ph, 0, kernel, MV_PRECISION_Q3,
    1792             :                                 mi_col * MI_SIZE, mi_row * MI_SIZE);
    1793             :     }
    1794             : #else
    1795           0 :     vp9_build_inter_predictor(ref_yv12[!id].buf, ref_yv12[!id].stride,
    1796           0 :                               second_pred, pw, &frame_mv[refs[!id]].as_mv, &sf,
    1797             :                               pw, ph, 0, kernel, MV_PRECISION_Q3,
    1798             :                               mi_col * MI_SIZE, mi_row * MI_SIZE);
    1799             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    1800             : 
    1801             :     // Do compound motion search on the current reference frame.
    1802           0 :     if (id) xd->plane[0].pre[0] = ref_yv12[id];
    1803           0 :     vp9_set_mv_search_range(&x->mv_limits, &ref_mv[id].as_mv);
    1804             : 
    1805             :     // Use the mv result from the single mode as mv predictor.
    1806           0 :     tmp_mv = frame_mv[refs[id]].as_mv;
    1807             : 
    1808           0 :     tmp_mv.col >>= 3;
    1809           0 :     tmp_mv.row >>= 3;
    1810             : 
    1811             :     // Small-range full-pixel motion search.
    1812           0 :     bestsme = vp9_refining_search_8p_c(x, &tmp_mv, sadpb, search_range,
    1813           0 :                                        &cpi->fn_ptr[bsize], &ref_mv[id].as_mv,
    1814             :                                        second_pred);
    1815           0 :     if (bestsme < UINT_MAX)
    1816           0 :       bestsme = vp9_get_mvpred_av_var(x, &tmp_mv, &ref_mv[id].as_mv,
    1817           0 :                                       second_pred, &cpi->fn_ptr[bsize], 1);
    1818             : 
    1819           0 :     x->mv_limits = tmp_mv_limits;
    1820             : 
    1821           0 :     if (bestsme < UINT_MAX) {
    1822             :       uint32_t dis; /* TODO: use dis in distortion calculation later. */
    1823             :       uint32_t sse;
    1824           0 :       bestsme = cpi->find_fractional_mv_step(
    1825           0 :           x, &tmp_mv, &ref_mv[id].as_mv, cpi->common.allow_high_precision_mv,
    1826           0 :           x->errorperbit, &cpi->fn_ptr[bsize], 0,
    1827           0 :           cpi->sf.mv.subpel_iters_per_step, NULL, x->nmvjointcost, x->mvcost,
    1828             :           &dis, &sse, second_pred, pw, ph);
    1829             :     }
    1830             : 
    1831             :     // Restore the pointer to the first (possibly scaled) prediction buffer.
    1832           0 :     if (id) xd->plane[0].pre[0] = ref_yv12[0];
    1833             : 
    1834           0 :     if (bestsme < last_besterr[id]) {
    1835           0 :       frame_mv[refs[id]].as_mv = tmp_mv;
    1836           0 :       last_besterr[id] = bestsme;
    1837             :     } else {
    1838           0 :       break;
    1839             :     }
    1840             :   }
    1841             : 
    1842           0 :   *rate_mv = 0;
    1843             : 
    1844           0 :   for (ref = 0; ref < 2; ++ref) {
    1845           0 :     if (scaled_ref_frame[ref]) {
    1846             :       // Restore the prediction frame pointers to their unscaled versions.
    1847             :       int i;
    1848           0 :       for (i = 0; i < MAX_MB_PLANE; i++)
    1849           0 :         xd->plane[i].pre[ref] = backup_yv12[ref][i];
    1850             :     }
    1851             : 
    1852           0 :     *rate_mv += vp9_mv_bit_cost(&frame_mv[refs[ref]].as_mv,
    1853           0 :                                 &x->mbmi_ext->ref_mvs[refs[ref]][0].as_mv,
    1854           0 :                                 x->nmvjointcost, x->mvcost, MV_COST_WEIGHT);
    1855             :   }
    1856           0 : }
    1857             : 
    1858           0 : static int64_t rd_pick_best_sub8x8_mode(
    1859             :     VP9_COMP *cpi, MACROBLOCK *x, int_mv *best_ref_mv,
    1860             :     int_mv *second_best_ref_mv, int64_t best_rd, int *returntotrate,
    1861             :     int *returnyrate, int64_t *returndistortion, int *skippable, int64_t *psse,
    1862             :     int mvthresh, int_mv seg_mvs[4][MAX_REF_FRAMES], BEST_SEG_INFO *bsi_buf,
    1863             :     int filter_idx, int mi_row, int mi_col) {
    1864             :   int i;
    1865           0 :   BEST_SEG_INFO *bsi = bsi_buf + filter_idx;
    1866           0 :   MACROBLOCKD *xd = &x->e_mbd;
    1867           0 :   MODE_INFO *mi = xd->mi[0];
    1868             :   int mode_idx;
    1869           0 :   int k, br = 0, idx, idy;
    1870           0 :   int64_t bd = 0, block_sse = 0;
    1871             :   PREDICTION_MODE this_mode;
    1872           0 :   VP9_COMMON *cm = &cpi->common;
    1873           0 :   struct macroblock_plane *const p = &x->plane[0];
    1874           0 :   struct macroblockd_plane *const pd = &xd->plane[0];
    1875           0 :   const int label_count = 4;
    1876           0 :   int64_t this_segment_rd = 0;
    1877             :   int label_mv_thresh;
    1878           0 :   int segmentyrate = 0;
    1879           0 :   const BLOCK_SIZE bsize = mi->sb_type;
    1880           0 :   const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
    1881           0 :   const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
    1882             :   ENTROPY_CONTEXT t_above[2], t_left[2];
    1883           0 :   int subpelmv = 1, have_ref = 0;
    1884           0 :   SPEED_FEATURES *const sf = &cpi->sf;
    1885           0 :   const int has_second_rf = has_second_ref(mi);
    1886           0 :   const int inter_mode_mask = sf->inter_mode_mask[bsize];
    1887           0 :   MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;
    1888             : 
    1889           0 :   vp9_zero(*bsi);
    1890             : 
    1891           0 :   bsi->segment_rd = best_rd;
    1892           0 :   bsi->ref_mv[0] = best_ref_mv;
    1893           0 :   bsi->ref_mv[1] = second_best_ref_mv;
    1894           0 :   bsi->mvp.as_int = best_ref_mv->as_int;
    1895           0 :   bsi->mvthresh = mvthresh;
    1896             : 
    1897           0 :   for (i = 0; i < 4; i++) bsi->modes[i] = ZEROMV;
    1898             : 
    1899           0 :   memcpy(t_above, pd->above_context, sizeof(t_above));
    1900           0 :   memcpy(t_left, pd->left_context, sizeof(t_left));
    1901             : 
    1902             :   // 64 makes this threshold really big effectively
    1903             :   // making it so that we very rarely check mvs on
    1904             :   // segments.   setting this to 1 would make mv thresh
    1905             :   // roughly equal to what it is for macroblocks
    1906           0 :   label_mv_thresh = 1 * bsi->mvthresh / label_count;
    1907             : 
    1908             :   // Segmentation method overheads
    1909           0 :   for (idy = 0; idy < 2; idy += num_4x4_blocks_high) {
    1910           0 :     for (idx = 0; idx < 2; idx += num_4x4_blocks_wide) {
    1911             :       // TODO(jingning,rbultje): rewrite the rate-distortion optimization
    1912             :       // loop for 4x4/4x8/8x4 block coding. to be replaced with new rd loop
    1913             :       int_mv mode_mv[MB_MODE_COUNT][2];
    1914             :       int_mv frame_mv[MB_MODE_COUNT][MAX_REF_FRAMES];
    1915           0 :       PREDICTION_MODE mode_selected = ZEROMV;
    1916           0 :       int64_t best_rd = INT64_MAX;
    1917           0 :       const int i = idy * 2 + idx;
    1918             :       int ref;
    1919             : 
    1920           0 :       for (ref = 0; ref < 1 + has_second_rf; ++ref) {
    1921           0 :         const MV_REFERENCE_FRAME frame = mi->ref_frame[ref];
    1922           0 :         frame_mv[ZEROMV][frame].as_int = 0;
    1923           0 :         vp9_append_sub8x8_mvs_for_idx(
    1924           0 :             cm, xd, i, ref, mi_row, mi_col, &frame_mv[NEARESTMV][frame],
    1925           0 :             &frame_mv[NEARMV][frame], mbmi_ext->mode_context);
    1926             :       }
    1927             : 
    1928             :       // search for the best motion vector on this segment
    1929           0 :       for (this_mode = NEARESTMV; this_mode <= NEWMV; ++this_mode) {
    1930           0 :         const struct buf_2d orig_src = x->plane[0].src;
    1931             :         struct buf_2d orig_pre[2];
    1932             : 
    1933           0 :         mode_idx = INTER_OFFSET(this_mode);
    1934           0 :         bsi->rdstat[i][mode_idx].brdcost = INT64_MAX;
    1935           0 :         if (!(inter_mode_mask & (1 << this_mode))) continue;
    1936             : 
    1937           0 :         if (!check_best_zero_mv(cpi, mbmi_ext->mode_context, frame_mv,
    1938           0 :                                 this_mode, mi->ref_frame))
    1939           0 :           continue;
    1940             : 
    1941           0 :         memcpy(orig_pre, pd->pre, sizeof(orig_pre));
    1942           0 :         memcpy(bsi->rdstat[i][mode_idx].ta, t_above,
    1943             :                sizeof(bsi->rdstat[i][mode_idx].ta));
    1944           0 :         memcpy(bsi->rdstat[i][mode_idx].tl, t_left,
    1945             :                sizeof(bsi->rdstat[i][mode_idx].tl));
    1946             : 
    1947             :         // motion search for newmv (single predictor case only)
    1948           0 :         if (!has_second_rf && this_mode == NEWMV &&
    1949           0 :             seg_mvs[i][mi->ref_frame[0]].as_int == INVALID_MV) {
    1950           0 :           MV *const new_mv = &mode_mv[NEWMV][0].as_mv;
    1951           0 :           int step_param = 0;
    1952           0 :           uint32_t bestsme = UINT_MAX;
    1953           0 :           int sadpb = x->sadperbit4;
    1954             :           MV mvp_full;
    1955             :           int max_mv;
    1956             :           int cost_list[5];
    1957           0 :           const MvLimits tmp_mv_limits = x->mv_limits;
    1958             : 
    1959             :           /* Is the best so far sufficiently good that we cant justify doing
    1960             :            * and new motion search. */
    1961           0 :           if (best_rd < label_mv_thresh) break;
    1962             : 
    1963           0 :           if (cpi->oxcf.mode != BEST) {
    1964             :             // use previous block's result as next block's MV predictor.
    1965           0 :             if (i > 0) {
    1966           0 :               bsi->mvp.as_int = mi->bmi[i - 1].as_mv[0].as_int;
    1967           0 :               if (i == 2) bsi->mvp.as_int = mi->bmi[i - 2].as_mv[0].as_int;
    1968             :             }
    1969             :           }
    1970           0 :           if (i == 0)
    1971           0 :             max_mv = x->max_mv_context[mi->ref_frame[0]];
    1972             :           else
    1973           0 :             max_mv =
    1974           0 :                 VPXMAX(abs(bsi->mvp.as_mv.row), abs(bsi->mvp.as_mv.col)) >> 3;
    1975             : 
    1976           0 :           if (sf->mv.auto_mv_step_size && cm->show_frame) {
    1977             :             // Take wtd average of the step_params based on the last frame's
    1978             :             // max mv magnitude and the best ref mvs of the current block for
    1979             :             // the given reference.
    1980           0 :             step_param =
    1981           0 :                 (vp9_init_search_range(max_mv) + cpi->mv_step_param) / 2;
    1982             :           } else {
    1983           0 :             step_param = cpi->mv_step_param;
    1984             :           }
    1985             : 
    1986           0 :           mvp_full.row = bsi->mvp.as_mv.row >> 3;
    1987           0 :           mvp_full.col = bsi->mvp.as_mv.col >> 3;
    1988             : 
    1989           0 :           if (sf->adaptive_motion_search) {
    1990           0 :             mvp_full.row = x->pred_mv[mi->ref_frame[0]].row >> 3;
    1991           0 :             mvp_full.col = x->pred_mv[mi->ref_frame[0]].col >> 3;
    1992           0 :             step_param = VPXMAX(step_param, 8);
    1993             :           }
    1994             : 
    1995             :           // adjust src pointer for this block
    1996           0 :           mi_buf_shift(x, i);
    1997             : 
    1998           0 :           vp9_set_mv_search_range(&x->mv_limits, &bsi->ref_mv[0]->as_mv);
    1999             : 
    2000           0 :           bestsme = vp9_full_pixel_search(
    2001             :               cpi, x, bsize, &mvp_full, step_param, sadpb,
    2002           0 :               sf->mv.subpel_search_method != SUBPEL_TREE ? cost_list : NULL,
    2003           0 :               &bsi->ref_mv[0]->as_mv, new_mv, INT_MAX, 1);
    2004             : 
    2005           0 :           x->mv_limits = tmp_mv_limits;
    2006             : 
    2007           0 :           if (bestsme < UINT_MAX) {
    2008             :             uint32_t distortion;
    2009           0 :             cpi->find_fractional_mv_step(
    2010           0 :                 x, new_mv, &bsi->ref_mv[0]->as_mv, cm->allow_high_precision_mv,
    2011           0 :                 x->errorperbit, &cpi->fn_ptr[bsize], sf->mv.subpel_force_stop,
    2012             :                 sf->mv.subpel_iters_per_step, cond_cost_list(cpi, cost_list),
    2013           0 :                 x->nmvjointcost, x->mvcost, &distortion,
    2014           0 :                 &x->pred_sse[mi->ref_frame[0]], NULL, 0, 0);
    2015             : 
    2016             :             // save motion search result for use in compound prediction
    2017           0 :             seg_mvs[i][mi->ref_frame[0]].as_mv = *new_mv;
    2018             :           }
    2019             : 
    2020           0 :           if (sf->adaptive_motion_search)
    2021           0 :             x->pred_mv[mi->ref_frame[0]] = *new_mv;
    2022             : 
    2023             :           // restore src pointers
    2024           0 :           mi_buf_restore(x, orig_src, orig_pre);
    2025             :         }
    2026             : 
    2027           0 :         if (has_second_rf) {
    2028           0 :           if (seg_mvs[i][mi->ref_frame[1]].as_int == INVALID_MV ||
    2029           0 :               seg_mvs[i][mi->ref_frame[0]].as_int == INVALID_MV)
    2030           0 :             continue;
    2031             :         }
    2032             : 
    2033           0 :         if (has_second_rf && this_mode == NEWMV &&
    2034           0 :             mi->interp_filter == EIGHTTAP) {
    2035             :           // adjust src pointers
    2036           0 :           mi_buf_shift(x, i);
    2037           0 :           if (sf->comp_inter_joint_search_thresh <= bsize) {
    2038             :             int rate_mv;
    2039           0 :             joint_motion_search(cpi, x, bsize, frame_mv[this_mode], mi_row,
    2040           0 :                                 mi_col, seg_mvs[i], &rate_mv);
    2041           0 :             seg_mvs[i][mi->ref_frame[0]].as_int =
    2042           0 :                 frame_mv[this_mode][mi->ref_frame[0]].as_int;
    2043           0 :             seg_mvs[i][mi->ref_frame[1]].as_int =
    2044           0 :                 frame_mv[this_mode][mi->ref_frame[1]].as_int;
    2045             :           }
    2046             :           // restore src pointers
    2047           0 :           mi_buf_restore(x, orig_src, orig_pre);
    2048             :         }
    2049             : 
    2050           0 :         bsi->rdstat[i][mode_idx].brate = set_and_cost_bmi_mvs(
    2051           0 :             cpi, x, xd, i, this_mode, mode_mv[this_mode], frame_mv, seg_mvs[i],
    2052           0 :             bsi->ref_mv, x->nmvjointcost, x->mvcost);
    2053             : 
    2054           0 :         for (ref = 0; ref < 1 + has_second_rf; ++ref) {
    2055           0 :           bsi->rdstat[i][mode_idx].mvs[ref].as_int =
    2056           0 :               mode_mv[this_mode][ref].as_int;
    2057           0 :           if (num_4x4_blocks_wide > 1)
    2058           0 :             bsi->rdstat[i + 1][mode_idx].mvs[ref].as_int =
    2059           0 :                 mode_mv[this_mode][ref].as_int;
    2060           0 :           if (num_4x4_blocks_high > 1)
    2061           0 :             bsi->rdstat[i + 2][mode_idx].mvs[ref].as_int =
    2062           0 :                 mode_mv[this_mode][ref].as_int;
    2063             :         }
    2064             : 
    2065             :         // Trap vectors that reach beyond the UMV borders
    2066           0 :         if (mv_check_bounds(&x->mv_limits, &mode_mv[this_mode][0].as_mv) ||
    2067           0 :             (has_second_rf &&
    2068           0 :              mv_check_bounds(&x->mv_limits, &mode_mv[this_mode][1].as_mv)))
    2069           0 :           continue;
    2070             : 
    2071           0 :         if (filter_idx > 0) {
    2072           0 :           BEST_SEG_INFO *ref_bsi = bsi_buf;
    2073           0 :           subpelmv = 0;
    2074           0 :           have_ref = 1;
    2075             : 
    2076           0 :           for (ref = 0; ref < 1 + has_second_rf; ++ref) {
    2077           0 :             subpelmv |= mv_has_subpel(&mode_mv[this_mode][ref].as_mv);
    2078           0 :             have_ref &= mode_mv[this_mode][ref].as_int ==
    2079           0 :                         ref_bsi->rdstat[i][mode_idx].mvs[ref].as_int;
    2080             :           }
    2081             : 
    2082           0 :           if (filter_idx > 1 && !subpelmv && !have_ref) {
    2083           0 :             ref_bsi = bsi_buf + 1;
    2084           0 :             have_ref = 1;
    2085           0 :             for (ref = 0; ref < 1 + has_second_rf; ++ref)
    2086           0 :               have_ref &= mode_mv[this_mode][ref].as_int ==
    2087           0 :                           ref_bsi->rdstat[i][mode_idx].mvs[ref].as_int;
    2088             :           }
    2089             : 
    2090           0 :           if (!subpelmv && have_ref &&
    2091           0 :               ref_bsi->rdstat[i][mode_idx].brdcost < INT64_MAX) {
    2092           0 :             memcpy(&bsi->rdstat[i][mode_idx], &ref_bsi->rdstat[i][mode_idx],
    2093             :                    sizeof(SEG_RDSTAT));
    2094           0 :             if (num_4x4_blocks_wide > 1)
    2095           0 :               bsi->rdstat[i + 1][mode_idx].eobs =
    2096           0 :                   ref_bsi->rdstat[i + 1][mode_idx].eobs;
    2097           0 :             if (num_4x4_blocks_high > 1)
    2098           0 :               bsi->rdstat[i + 2][mode_idx].eobs =
    2099           0 :                   ref_bsi->rdstat[i + 2][mode_idx].eobs;
    2100             : 
    2101           0 :             if (bsi->rdstat[i][mode_idx].brdcost < best_rd) {
    2102           0 :               mode_selected = this_mode;
    2103           0 :               best_rd = bsi->rdstat[i][mode_idx].brdcost;
    2104             :             }
    2105           0 :             continue;
    2106             :           }
    2107             :         }
    2108             : 
    2109           0 :         bsi->rdstat[i][mode_idx].brdcost = encode_inter_mb_segment(
    2110           0 :             cpi, x, bsi->segment_rd - this_segment_rd, i,
    2111             :             &bsi->rdstat[i][mode_idx].byrate, &bsi->rdstat[i][mode_idx].bdist,
    2112           0 :             &bsi->rdstat[i][mode_idx].bsse, bsi->rdstat[i][mode_idx].ta,
    2113           0 :             bsi->rdstat[i][mode_idx].tl, mi_row, mi_col);
    2114           0 :         if (bsi->rdstat[i][mode_idx].brdcost < INT64_MAX) {
    2115           0 :           bsi->rdstat[i][mode_idx].brdcost +=
    2116           0 :               RDCOST(x->rdmult, x->rddiv, bsi->rdstat[i][mode_idx].brate, 0);
    2117           0 :           bsi->rdstat[i][mode_idx].brate += bsi->rdstat[i][mode_idx].byrate;
    2118           0 :           bsi->rdstat[i][mode_idx].eobs = p->eobs[i];
    2119           0 :           if (num_4x4_blocks_wide > 1)
    2120           0 :             bsi->rdstat[i + 1][mode_idx].eobs = p->eobs[i + 1];
    2121           0 :           if (num_4x4_blocks_high > 1)
    2122           0 :             bsi->rdstat[i + 2][mode_idx].eobs = p->eobs[i + 2];
    2123             :         }
    2124             : 
    2125           0 :         if (bsi->rdstat[i][mode_idx].brdcost < best_rd) {
    2126           0 :           mode_selected = this_mode;
    2127           0 :           best_rd = bsi->rdstat[i][mode_idx].brdcost;
    2128             :         }
    2129             :       } /*for each 4x4 mode*/
    2130             : 
    2131           0 :       if (best_rd == INT64_MAX) {
    2132             :         int iy, midx;
    2133           0 :         for (iy = i + 1; iy < 4; ++iy)
    2134           0 :           for (midx = 0; midx < INTER_MODES; ++midx)
    2135           0 :             bsi->rdstat[iy][midx].brdcost = INT64_MAX;
    2136           0 :         bsi->segment_rd = INT64_MAX;
    2137           0 :         return INT64_MAX;
    2138             :       }
    2139             : 
    2140           0 :       mode_idx = INTER_OFFSET(mode_selected);
    2141           0 :       memcpy(t_above, bsi->rdstat[i][mode_idx].ta, sizeof(t_above));
    2142           0 :       memcpy(t_left, bsi->rdstat[i][mode_idx].tl, sizeof(t_left));
    2143             : 
    2144           0 :       set_and_cost_bmi_mvs(cpi, x, xd, i, mode_selected, mode_mv[mode_selected],
    2145           0 :                            frame_mv, seg_mvs[i], bsi->ref_mv, x->nmvjointcost,
    2146             :                            x->mvcost);
    2147             : 
    2148           0 :       br += bsi->rdstat[i][mode_idx].brate;
    2149           0 :       bd += bsi->rdstat[i][mode_idx].bdist;
    2150           0 :       block_sse += bsi->rdstat[i][mode_idx].bsse;
    2151           0 :       segmentyrate += bsi->rdstat[i][mode_idx].byrate;
    2152           0 :       this_segment_rd += bsi->rdstat[i][mode_idx].brdcost;
    2153             : 
    2154           0 :       if (this_segment_rd > bsi->segment_rd) {
    2155             :         int iy, midx;
    2156           0 :         for (iy = i + 1; iy < 4; ++iy)
    2157           0 :           for (midx = 0; midx < INTER_MODES; ++midx)
    2158           0 :             bsi->rdstat[iy][midx].brdcost = INT64_MAX;
    2159           0 :         bsi->segment_rd = INT64_MAX;
    2160           0 :         return INT64_MAX;
    2161             :       }
    2162             :     }
    2163             :   } /* for each label */
    2164             : 
    2165           0 :   bsi->r = br;
    2166           0 :   bsi->d = bd;
    2167           0 :   bsi->segment_yrate = segmentyrate;
    2168           0 :   bsi->segment_rd = this_segment_rd;
    2169           0 :   bsi->sse = block_sse;
    2170             : 
    2171             :   // update the coding decisions
    2172           0 :   for (k = 0; k < 4; ++k) bsi->modes[k] = mi->bmi[k].as_mode;
    2173             : 
    2174           0 :   if (bsi->segment_rd > best_rd) return INT64_MAX;
    2175             :   /* set it to the best */
    2176           0 :   for (i = 0; i < 4; i++) {
    2177           0 :     mode_idx = INTER_OFFSET(bsi->modes[i]);
    2178           0 :     mi->bmi[i].as_mv[0].as_int = bsi->rdstat[i][mode_idx].mvs[0].as_int;
    2179           0 :     if (has_second_ref(mi))
    2180           0 :       mi->bmi[i].as_mv[1].as_int = bsi->rdstat[i][mode_idx].mvs[1].as_int;
    2181           0 :     x->plane[0].eobs[i] = bsi->rdstat[i][mode_idx].eobs;
    2182           0 :     mi->bmi[i].as_mode = bsi->modes[i];
    2183             :   }
    2184             : 
    2185             :   /*
    2186             :    * used to set mbmi->mv.as_int
    2187             :    */
    2188           0 :   *returntotrate = bsi->r;
    2189           0 :   *returndistortion = bsi->d;
    2190           0 :   *returnyrate = bsi->segment_yrate;
    2191           0 :   *skippable = vp9_is_skippable_in_plane(x, BLOCK_8X8, 0);
    2192           0 :   *psse = bsi->sse;
    2193           0 :   mi->mode = bsi->modes[3];
    2194             : 
    2195           0 :   return bsi->segment_rd;
    2196             : }
    2197             : 
    2198           0 : static void estimate_ref_frame_costs(const VP9_COMMON *cm,
    2199             :                                      const MACROBLOCKD *xd, int segment_id,
    2200             :                                      unsigned int *ref_costs_single,
    2201             :                                      unsigned int *ref_costs_comp,
    2202             :                                      vpx_prob *comp_mode_p) {
    2203           0 :   int seg_ref_active =
    2204           0 :       segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME);
    2205           0 :   if (seg_ref_active) {
    2206           0 :     memset(ref_costs_single, 0, MAX_REF_FRAMES * sizeof(*ref_costs_single));
    2207           0 :     memset(ref_costs_comp, 0, MAX_REF_FRAMES * sizeof(*ref_costs_comp));
    2208           0 :     *comp_mode_p = 128;
    2209             :   } else {
    2210           0 :     vpx_prob intra_inter_p = vp9_get_intra_inter_prob(cm, xd);
    2211           0 :     vpx_prob comp_inter_p = 128;
    2212             : 
    2213           0 :     if (cm->reference_mode == REFERENCE_MODE_SELECT) {
    2214           0 :       comp_inter_p = vp9_get_reference_mode_prob(cm, xd);
    2215           0 :       *comp_mode_p = comp_inter_p;
    2216             :     } else {
    2217           0 :       *comp_mode_p = 128;
    2218             :     }
    2219             : 
    2220           0 :     ref_costs_single[INTRA_FRAME] = vp9_cost_bit(intra_inter_p, 0);
    2221             : 
    2222           0 :     if (cm->reference_mode != COMPOUND_REFERENCE) {
    2223           0 :       vpx_prob ref_single_p1 = vp9_get_pred_prob_single_ref_p1(cm, xd);
    2224           0 :       vpx_prob ref_single_p2 = vp9_get_pred_prob_single_ref_p2(cm, xd);
    2225           0 :       unsigned int base_cost = vp9_cost_bit(intra_inter_p, 1);
    2226             : 
    2227           0 :       if (cm->reference_mode == REFERENCE_MODE_SELECT)
    2228           0 :         base_cost += vp9_cost_bit(comp_inter_p, 0);
    2229             : 
    2230           0 :       ref_costs_single[LAST_FRAME] = ref_costs_single[GOLDEN_FRAME] =
    2231           0 :           ref_costs_single[ALTREF_FRAME] = base_cost;
    2232           0 :       ref_costs_single[LAST_FRAME] += vp9_cost_bit(ref_single_p1, 0);
    2233           0 :       ref_costs_single[GOLDEN_FRAME] += vp9_cost_bit(ref_single_p1, 1);
    2234           0 :       ref_costs_single[ALTREF_FRAME] += vp9_cost_bit(ref_single_p1, 1);
    2235           0 :       ref_costs_single[GOLDEN_FRAME] += vp9_cost_bit(ref_single_p2, 0);
    2236           0 :       ref_costs_single[ALTREF_FRAME] += vp9_cost_bit(ref_single_p2, 1);
    2237             :     } else {
    2238           0 :       ref_costs_single[LAST_FRAME] = 512;
    2239           0 :       ref_costs_single[GOLDEN_FRAME] = 512;
    2240           0 :       ref_costs_single[ALTREF_FRAME] = 512;
    2241             :     }
    2242           0 :     if (cm->reference_mode != SINGLE_REFERENCE) {
    2243           0 :       vpx_prob ref_comp_p = vp9_get_pred_prob_comp_ref_p(cm, xd);
    2244           0 :       unsigned int base_cost = vp9_cost_bit(intra_inter_p, 1);
    2245             : 
    2246           0 :       if (cm->reference_mode == REFERENCE_MODE_SELECT)
    2247           0 :         base_cost += vp9_cost_bit(comp_inter_p, 1);
    2248             : 
    2249           0 :       ref_costs_comp[LAST_FRAME] = base_cost + vp9_cost_bit(ref_comp_p, 0);
    2250           0 :       ref_costs_comp[GOLDEN_FRAME] = base_cost + vp9_cost_bit(ref_comp_p, 1);
    2251             :     } else {
    2252           0 :       ref_costs_comp[LAST_FRAME] = 512;
    2253           0 :       ref_costs_comp[GOLDEN_FRAME] = 512;
    2254             :     }
    2255             :   }
    2256           0 : }
    2257             : 
    2258           0 : static void store_coding_context(
    2259             :     MACROBLOCK *x, PICK_MODE_CONTEXT *ctx, int mode_index,
    2260             :     int64_t comp_pred_diff[REFERENCE_MODES],
    2261             :     int64_t best_filter_diff[SWITCHABLE_FILTER_CONTEXTS], int skippable) {
    2262           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    2263             : 
    2264             :   // Take a snapshot of the coding context so it can be
    2265             :   // restored if we decide to encode this way
    2266           0 :   ctx->skip = x->skip;
    2267           0 :   ctx->skippable = skippable;
    2268           0 :   ctx->best_mode_index = mode_index;
    2269           0 :   ctx->mic = *xd->mi[0];
    2270           0 :   ctx->mbmi_ext = *x->mbmi_ext;
    2271           0 :   ctx->single_pred_diff = (int)comp_pred_diff[SINGLE_REFERENCE];
    2272           0 :   ctx->comp_pred_diff = (int)comp_pred_diff[COMPOUND_REFERENCE];
    2273           0 :   ctx->hybrid_pred_diff = (int)comp_pred_diff[REFERENCE_MODE_SELECT];
    2274             : 
    2275           0 :   memcpy(ctx->best_filter_diff, best_filter_diff,
    2276             :          sizeof(*best_filter_diff) * SWITCHABLE_FILTER_CONTEXTS);
    2277           0 : }
    2278             : 
    2279           0 : static void setup_buffer_inter(VP9_COMP *cpi, MACROBLOCK *x,
    2280             :                                MV_REFERENCE_FRAME ref_frame,
    2281             :                                BLOCK_SIZE block_size, int mi_row, int mi_col,
    2282             :                                int_mv frame_nearest_mv[MAX_REF_FRAMES],
    2283             :                                int_mv frame_near_mv[MAX_REF_FRAMES],
    2284             :                                struct buf_2d yv12_mb[4][MAX_MB_PLANE]) {
    2285           0 :   const VP9_COMMON *cm = &cpi->common;
    2286           0 :   const YV12_BUFFER_CONFIG *yv12 = get_ref_frame_buffer(cpi, ref_frame);
    2287           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    2288           0 :   MODE_INFO *const mi = xd->mi[0];
    2289           0 :   int_mv *const candidates = x->mbmi_ext->ref_mvs[ref_frame];
    2290           0 :   const struct scale_factors *const sf = &cm->frame_refs[ref_frame - 1].sf;
    2291           0 :   MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;
    2292             : 
    2293           0 :   assert(yv12 != NULL);
    2294             : 
    2295             :   // TODO(jkoleszar): Is the UV buffer ever used here? If so, need to make this
    2296             :   // use the UV scaling factors.
    2297           0 :   vp9_setup_pred_block(xd, yv12_mb[ref_frame], yv12, mi_row, mi_col, sf, sf);
    2298             : 
    2299             :   // Gets an initial list of candidate vectors from neighbours and orders them
    2300           0 :   vp9_find_mv_refs(cm, xd, mi, ref_frame, candidates, mi_row, mi_col,
    2301           0 :                    mbmi_ext->mode_context);
    2302             : 
    2303             :   // Candidate refinement carried out at encoder and decoder
    2304           0 :   vp9_find_best_ref_mvs(xd, cm->allow_high_precision_mv, candidates,
    2305           0 :                         &frame_nearest_mv[ref_frame],
    2306           0 :                         &frame_near_mv[ref_frame]);
    2307             : 
    2308             :   // Further refinement that is encode side only to test the top few candidates
    2309             :   // in full and choose the best as the centre point for subsequent searches.
    2310             :   // The current implementation doesn't support scaling.
    2311           0 :   if (!vp9_is_scaled(sf) && block_size >= BLOCK_8X8)
    2312           0 :     vp9_mv_pred(cpi, x, yv12_mb[ref_frame][0].buf, yv12->y_stride, ref_frame,
    2313             :                 block_size);
    2314           0 : }
    2315             : 
    2316           0 : static void single_motion_search(VP9_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bsize,
    2317             :                                  int mi_row, int mi_col, int_mv *tmp_mv,
    2318             :                                  int *rate_mv) {
    2319           0 :   MACROBLOCKD *xd = &x->e_mbd;
    2320           0 :   const VP9_COMMON *cm = &cpi->common;
    2321           0 :   MODE_INFO *mi = xd->mi[0];
    2322           0 :   struct buf_2d backup_yv12[MAX_MB_PLANE] = { { 0, 0 } };
    2323           0 :   int bestsme = INT_MAX;
    2324             :   int step_param;
    2325           0 :   int sadpb = x->sadperbit16;
    2326             :   MV mvp_full;
    2327           0 :   int ref = mi->ref_frame[0];
    2328           0 :   MV ref_mv = x->mbmi_ext->ref_mvs[ref][0].as_mv;
    2329           0 :   const MvLimits tmp_mv_limits = x->mv_limits;
    2330             :   int cost_list[5];
    2331             : 
    2332           0 :   const YV12_BUFFER_CONFIG *scaled_ref_frame =
    2333             :       vp9_get_scaled_ref_frame(cpi, ref);
    2334             : 
    2335             :   MV pred_mv[3];
    2336           0 :   pred_mv[0] = x->mbmi_ext->ref_mvs[ref][0].as_mv;
    2337           0 :   pred_mv[1] = x->mbmi_ext->ref_mvs[ref][1].as_mv;
    2338           0 :   pred_mv[2] = x->pred_mv[ref];
    2339             : 
    2340           0 :   if (scaled_ref_frame) {
    2341             :     int i;
    2342             :     // Swap out the reference frame for a version that's been scaled to
    2343             :     // match the resolution of the current frame, allowing the existing
    2344             :     // motion search code to be used without additional modifications.
    2345           0 :     for (i = 0; i < MAX_MB_PLANE; i++) backup_yv12[i] = xd->plane[i].pre[0];
    2346             : 
    2347           0 :     vp9_setup_pre_planes(xd, 0, scaled_ref_frame, mi_row, mi_col, NULL);
    2348             :   }
    2349             : 
    2350             :   // Work out the size of the first step in the mv step search.
    2351             :   // 0 here is maximum length first step. 1 is VPXMAX >> 1 etc.
    2352           0 :   if (cpi->sf.mv.auto_mv_step_size && cm->show_frame) {
    2353             :     // Take wtd average of the step_params based on the last frame's
    2354             :     // max mv magnitude and that based on the best ref mvs of the current
    2355             :     // block for the given reference.
    2356           0 :     step_param =
    2357           0 :         (vp9_init_search_range(x->max_mv_context[ref]) + cpi->mv_step_param) /
    2358             :         2;
    2359             :   } else {
    2360           0 :     step_param = cpi->mv_step_param;
    2361             :   }
    2362             : 
    2363           0 :   if (cpi->sf.adaptive_motion_search && bsize < BLOCK_64X64) {
    2364           0 :     int boffset =
    2365           0 :         2 * (b_width_log2_lookup[BLOCK_64X64] -
    2366           0 :              VPXMIN(b_height_log2_lookup[bsize], b_width_log2_lookup[bsize]));
    2367           0 :     step_param = VPXMAX(step_param, boffset);
    2368             :   }
    2369             : 
    2370           0 :   if (cpi->sf.adaptive_motion_search) {
    2371           0 :     int bwl = b_width_log2_lookup[bsize];
    2372           0 :     int bhl = b_height_log2_lookup[bsize];
    2373           0 :     int tlevel = x->pred_mv_sad[ref] >> (bwl + bhl + 4);
    2374             : 
    2375           0 :     if (tlevel < 5) step_param += 2;
    2376             : 
    2377             :     // prev_mv_sad is not setup for dynamically scaled frames.
    2378           0 :     if (cpi->oxcf.resize_mode != RESIZE_DYNAMIC) {
    2379             :       int i;
    2380           0 :       for (i = LAST_FRAME; i <= ALTREF_FRAME && cm->show_frame; ++i) {
    2381           0 :         if ((x->pred_mv_sad[ref] >> 3) > x->pred_mv_sad[i]) {
    2382           0 :           x->pred_mv[ref].row = 0;
    2383           0 :           x->pred_mv[ref].col = 0;
    2384           0 :           tmp_mv->as_int = INVALID_MV;
    2385             : 
    2386           0 :           if (scaled_ref_frame) {
    2387             :             int i;
    2388           0 :             for (i = 0; i < MAX_MB_PLANE; ++i)
    2389           0 :               xd->plane[i].pre[0] = backup_yv12[i];
    2390             :           }
    2391           0 :           return;
    2392             :         }
    2393             :       }
    2394             :     }
    2395             :   }
    2396             : 
    2397             :   // Note: MV limits are modified here. Always restore the original values
    2398             :   // after full-pixel motion search.
    2399           0 :   vp9_set_mv_search_range(&x->mv_limits, &ref_mv);
    2400             : 
    2401           0 :   mvp_full = pred_mv[x->mv_best_ref_index[ref]];
    2402             : 
    2403           0 :   mvp_full.col >>= 3;
    2404           0 :   mvp_full.row >>= 3;
    2405             : 
    2406           0 :   bestsme = vp9_full_pixel_search(cpi, x, bsize, &mvp_full, step_param, sadpb,
    2407             :                                   cond_cost_list(cpi, cost_list), &ref_mv,
    2408             :                                   &tmp_mv->as_mv, INT_MAX, 1);
    2409             : 
    2410           0 :   x->mv_limits = tmp_mv_limits;
    2411             : 
    2412           0 :   if (bestsme < INT_MAX) {
    2413             :     uint32_t dis; /* TODO: use dis in distortion calculation later. */
    2414           0 :     cpi->find_fractional_mv_step(
    2415             :         x, &tmp_mv->as_mv, &ref_mv, cm->allow_high_precision_mv, x->errorperbit,
    2416           0 :         &cpi->fn_ptr[bsize], cpi->sf.mv.subpel_force_stop,
    2417             :         cpi->sf.mv.subpel_iters_per_step, cond_cost_list(cpi, cost_list),
    2418           0 :         x->nmvjointcost, x->mvcost, &dis, &x->pred_sse[ref], NULL, 0, 0);
    2419             :   }
    2420           0 :   *rate_mv = vp9_mv_bit_cost(&tmp_mv->as_mv, &ref_mv, x->nmvjointcost,
    2421             :                              x->mvcost, MV_COST_WEIGHT);
    2422             : 
    2423           0 :   if (cpi->sf.adaptive_motion_search) x->pred_mv[ref] = tmp_mv->as_mv;
    2424             : 
    2425           0 :   if (scaled_ref_frame) {
    2426             :     int i;
    2427           0 :     for (i = 0; i < MAX_MB_PLANE; i++) xd->plane[i].pre[0] = backup_yv12[i];
    2428             :   }
    2429             : }
    2430             : 
    2431           0 : static INLINE void restore_dst_buf(MACROBLOCKD *xd,
    2432             :                                    uint8_t *orig_dst[MAX_MB_PLANE],
    2433             :                                    int orig_dst_stride[MAX_MB_PLANE]) {
    2434             :   int i;
    2435           0 :   for (i = 0; i < MAX_MB_PLANE; i++) {
    2436           0 :     xd->plane[i].dst.buf = orig_dst[i];
    2437           0 :     xd->plane[i].dst.stride = orig_dst_stride[i];
    2438             :   }
    2439           0 : }
    2440             : 
    2441             : // In some situations we want to discount tha pparent cost of a new motion
    2442             : // vector. Where there is a subtle motion field and especially where there is
    2443             : // low spatial complexity then it can be hard to cover the cost of a new motion
    2444             : // vector in a single block, even if that motion vector reduces distortion.
    2445             : // However, once established that vector may be usable through the nearest and
    2446             : // near mv modes to reduce distortion in subsequent blocks and also improve
    2447             : // visual quality.
    2448           0 : static int discount_newmv_test(const VP9_COMP *cpi, int this_mode,
    2449             :                                int_mv this_mv,
    2450             :                                int_mv (*mode_mv)[MAX_REF_FRAMES],
    2451             :                                int ref_frame) {
    2452           0 :   return (!cpi->rc.is_src_frame_alt_ref && (this_mode == NEWMV) &&
    2453           0 :           (this_mv.as_int != 0) &&
    2454           0 :           ((mode_mv[NEARESTMV][ref_frame].as_int == 0) ||
    2455           0 :            (mode_mv[NEARESTMV][ref_frame].as_int == INVALID_MV)) &&
    2456           0 :           ((mode_mv[NEARMV][ref_frame].as_int == 0) ||
    2457           0 :            (mode_mv[NEARMV][ref_frame].as_int == INVALID_MV)));
    2458             : }
    2459             : 
    2460           0 : static int64_t handle_inter_mode(
    2461             :     VP9_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bsize, int *rate2,
    2462             :     int64_t *distortion, int *skippable, int *rate_y, int *rate_uv,
    2463             :     int *disable_skip, int_mv (*mode_mv)[MAX_REF_FRAMES], int mi_row,
    2464             :     int mi_col, int_mv single_newmv[MAX_REF_FRAMES],
    2465             :     INTERP_FILTER (*single_filter)[MAX_REF_FRAMES],
    2466             :     int (*single_skippable)[MAX_REF_FRAMES], int64_t *psse,
    2467             :     const int64_t ref_best_rd, int64_t *mask_filter, int64_t filter_cache[]) {
    2468           0 :   VP9_COMMON *cm = &cpi->common;
    2469           0 :   MACROBLOCKD *xd = &x->e_mbd;
    2470           0 :   MODE_INFO *mi = xd->mi[0];
    2471           0 :   MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;
    2472           0 :   const int is_comp_pred = has_second_ref(mi);
    2473           0 :   const int this_mode = mi->mode;
    2474           0 :   int_mv *frame_mv = mode_mv[this_mode];
    2475             :   int i;
    2476           0 :   int refs[2] = { mi->ref_frame[0],
    2477           0 :                   (mi->ref_frame[1] < 0 ? 0 : mi->ref_frame[1]) };
    2478             :   int_mv cur_mv[2];
    2479             : #if CONFIG_VP9_HIGHBITDEPTH
    2480             :   DECLARE_ALIGNED(16, uint16_t, tmp_buf16[MAX_MB_PLANE * 64 * 64]);
    2481             :   uint8_t *tmp_buf;
    2482             : #else
    2483             :   DECLARE_ALIGNED(16, uint8_t, tmp_buf[MAX_MB_PLANE * 64 * 64]);
    2484             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    2485           0 :   int pred_exists = 0;
    2486             :   int intpel_mv;
    2487           0 :   int64_t rd, tmp_rd, best_rd = INT64_MAX;
    2488           0 :   int best_needs_copy = 0;
    2489             :   uint8_t *orig_dst[MAX_MB_PLANE];
    2490             :   int orig_dst_stride[MAX_MB_PLANE];
    2491           0 :   int rs = 0;
    2492           0 :   INTERP_FILTER best_filter = SWITCHABLE;
    2493           0 :   uint8_t skip_txfm[MAX_MB_PLANE << 2] = { 0 };
    2494           0 :   int64_t bsse[MAX_MB_PLANE << 2] = { 0 };
    2495             : 
    2496           0 :   int bsl = mi_width_log2_lookup[bsize];
    2497           0 :   int pred_filter_search =
    2498           0 :       cpi->sf.cb_pred_filter_search
    2499           0 :           ? (((mi_row + mi_col) >> bsl) +
    2500           0 :              get_chessboard_index(cm->current_video_frame)) &
    2501             :                 0x1
    2502           0 :           : 0;
    2503             : 
    2504           0 :   int skip_txfm_sb = 0;
    2505           0 :   int64_t skip_sse_sb = INT64_MAX;
    2506           0 :   int64_t distortion_y = 0, distortion_uv = 0;
    2507             : 
    2508             : #if CONFIG_VP9_HIGHBITDEPTH
    2509             :   if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    2510             :     tmp_buf = CONVERT_TO_BYTEPTR(tmp_buf16);
    2511             :   } else {
    2512             :     tmp_buf = (uint8_t *)tmp_buf16;
    2513             :   }
    2514             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    2515             : 
    2516           0 :   if (pred_filter_search) {
    2517           0 :     INTERP_FILTER af = SWITCHABLE, lf = SWITCHABLE;
    2518           0 :     if (xd->above_mi && is_inter_block(xd->above_mi))
    2519           0 :       af = xd->above_mi->interp_filter;
    2520           0 :     if (xd->left_mi && is_inter_block(xd->left_mi))
    2521           0 :       lf = xd->left_mi->interp_filter;
    2522             : 
    2523           0 :     if ((this_mode != NEWMV) || (af == lf)) best_filter = af;
    2524             :   }
    2525             : 
    2526           0 :   if (is_comp_pred) {
    2527           0 :     if (frame_mv[refs[0]].as_int == INVALID_MV ||
    2528           0 :         frame_mv[refs[1]].as_int == INVALID_MV)
    2529           0 :       return INT64_MAX;
    2530             : 
    2531           0 :     if (cpi->sf.adaptive_mode_search) {
    2532           0 :       if (single_filter[this_mode][refs[0]] ==
    2533           0 :           single_filter[this_mode][refs[1]])
    2534           0 :         best_filter = single_filter[this_mode][refs[0]];
    2535             :     }
    2536             :   }
    2537             : 
    2538           0 :   if (this_mode == NEWMV) {
    2539             :     int rate_mv;
    2540           0 :     if (is_comp_pred) {
    2541             :       // Initialize mv using single prediction mode result.
    2542           0 :       frame_mv[refs[0]].as_int = single_newmv[refs[0]].as_int;
    2543           0 :       frame_mv[refs[1]].as_int = single_newmv[refs[1]].as_int;
    2544             : 
    2545           0 :       if (cpi->sf.comp_inter_joint_search_thresh <= bsize) {
    2546           0 :         joint_motion_search(cpi, x, bsize, frame_mv, mi_row, mi_col,
    2547             :                             single_newmv, &rate_mv);
    2548             :       } else {
    2549           0 :         rate_mv = vp9_mv_bit_cost(&frame_mv[refs[0]].as_mv,
    2550           0 :                                   &x->mbmi_ext->ref_mvs[refs[0]][0].as_mv,
    2551           0 :                                   x->nmvjointcost, x->mvcost, MV_COST_WEIGHT);
    2552           0 :         rate_mv += vp9_mv_bit_cost(&frame_mv[refs[1]].as_mv,
    2553           0 :                                    &x->mbmi_ext->ref_mvs[refs[1]][0].as_mv,
    2554           0 :                                    x->nmvjointcost, x->mvcost, MV_COST_WEIGHT);
    2555             :       }
    2556           0 :       *rate2 += rate_mv;
    2557             :     } else {
    2558             :       int_mv tmp_mv;
    2559           0 :       single_motion_search(cpi, x, bsize, mi_row, mi_col, &tmp_mv, &rate_mv);
    2560           0 :       if (tmp_mv.as_int == INVALID_MV) return INT64_MAX;
    2561             : 
    2562           0 :       frame_mv[refs[0]].as_int = xd->mi[0]->bmi[0].as_mv[0].as_int =
    2563           0 :           tmp_mv.as_int;
    2564           0 :       single_newmv[refs[0]].as_int = tmp_mv.as_int;
    2565             : 
    2566             :       // Estimate the rate implications of a new mv but discount this
    2567             :       // under certain circumstances where we want to help initiate a weak
    2568             :       // motion field, where the distortion gain for a single block may not
    2569             :       // be enough to overcome the cost of a new mv.
    2570           0 :       if (discount_newmv_test(cpi, this_mode, tmp_mv, mode_mv, refs[0])) {
    2571           0 :         *rate2 += VPXMAX((rate_mv / NEW_MV_DISCOUNT_FACTOR), 1);
    2572             :       } else {
    2573           0 :         *rate2 += rate_mv;
    2574             :       }
    2575             :     }
    2576             :   }
    2577             : 
    2578           0 :   for (i = 0; i < is_comp_pred + 1; ++i) {
    2579           0 :     cur_mv[i] = frame_mv[refs[i]];
    2580             :     // Clip "next_nearest" so that it does not extend to far out of image
    2581           0 :     if (this_mode != NEWMV) clamp_mv2(&cur_mv[i].as_mv, xd);
    2582             : 
    2583           0 :     if (mv_check_bounds(&x->mv_limits, &cur_mv[i].as_mv)) return INT64_MAX;
    2584           0 :     mi->mv[i].as_int = cur_mv[i].as_int;
    2585             :   }
    2586             : 
    2587             :   // do first prediction into the destination buffer. Do the next
    2588             :   // prediction into a temporary buffer. Then keep track of which one
    2589             :   // of these currently holds the best predictor, and use the other
    2590             :   // one for future predictions. In the end, copy from tmp_buf to
    2591             :   // dst if necessary.
    2592           0 :   for (i = 0; i < MAX_MB_PLANE; i++) {
    2593           0 :     orig_dst[i] = xd->plane[i].dst.buf;
    2594           0 :     orig_dst_stride[i] = xd->plane[i].dst.stride;
    2595             :   }
    2596             : 
    2597             :   // We don't include the cost of the second reference here, because there
    2598             :   // are only two options: Last/ARF or Golden/ARF; The second one is always
    2599             :   // known, which is ARF.
    2600             :   //
    2601             :   // Under some circumstances we discount the cost of new mv mode to encourage
    2602             :   // initiation of a motion field.
    2603           0 :   if (discount_newmv_test(cpi, this_mode, frame_mv[refs[0]], mode_mv,
    2604             :                           refs[0])) {
    2605           0 :     *rate2 +=
    2606           0 :         VPXMIN(cost_mv_ref(cpi, this_mode, mbmi_ext->mode_context[refs[0]]),
    2607             :                cost_mv_ref(cpi, NEARESTMV, mbmi_ext->mode_context[refs[0]]));
    2608             :   } else {
    2609           0 :     *rate2 += cost_mv_ref(cpi, this_mode, mbmi_ext->mode_context[refs[0]]);
    2610             :   }
    2611             : 
    2612           0 :   if (RDCOST(x->rdmult, x->rddiv, *rate2, 0) > ref_best_rd &&
    2613           0 :       mi->mode != NEARESTMV)
    2614           0 :     return INT64_MAX;
    2615             : 
    2616           0 :   pred_exists = 0;
    2617             :   // Are all MVs integer pel for Y and UV
    2618           0 :   intpel_mv = !mv_has_subpel(&mi->mv[0].as_mv);
    2619           0 :   if (is_comp_pred) intpel_mv &= !mv_has_subpel(&mi->mv[1].as_mv);
    2620             : 
    2621             :   // Search for best switchable filter by checking the variance of
    2622             :   // pred error irrespective of whether the filter will be used
    2623           0 :   for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i) filter_cache[i] = INT64_MAX;
    2624             : 
    2625           0 :   if (cm->interp_filter != BILINEAR) {
    2626           0 :     if (x->source_variance < cpi->sf.disable_filter_search_var_thresh) {
    2627           0 :       best_filter = EIGHTTAP;
    2628           0 :     } else if (best_filter == SWITCHABLE) {
    2629             :       int newbest;
    2630           0 :       int tmp_rate_sum = 0;
    2631           0 :       int64_t tmp_dist_sum = 0;
    2632             : 
    2633           0 :       for (i = 0; i < SWITCHABLE_FILTERS; ++i) {
    2634             :         int j;
    2635             :         int64_t rs_rd;
    2636           0 :         int tmp_skip_sb = 0;
    2637           0 :         int64_t tmp_skip_sse = INT64_MAX;
    2638             : 
    2639           0 :         mi->interp_filter = i;
    2640           0 :         rs = vp9_get_switchable_rate(cpi, xd);
    2641           0 :         rs_rd = RDCOST(x->rdmult, x->rddiv, rs, 0);
    2642             : 
    2643           0 :         if (i > 0 && intpel_mv) {
    2644           0 :           rd = RDCOST(x->rdmult, x->rddiv, tmp_rate_sum, tmp_dist_sum);
    2645           0 :           filter_cache[i] = rd;
    2646           0 :           filter_cache[SWITCHABLE_FILTERS] =
    2647           0 :               VPXMIN(filter_cache[SWITCHABLE_FILTERS], rd + rs_rd);
    2648           0 :           if (cm->interp_filter == SWITCHABLE) rd += rs_rd;
    2649           0 :           *mask_filter = VPXMAX(*mask_filter, rd);
    2650             :         } else {
    2651           0 :           int rate_sum = 0;
    2652           0 :           int64_t dist_sum = 0;
    2653           0 :           if (i > 0 && cpi->sf.adaptive_interp_filter_search &&
    2654           0 :               (cpi->sf.interp_filter_search_mask & (1 << i))) {
    2655           0 :             rate_sum = INT_MAX;
    2656           0 :             dist_sum = INT64_MAX;
    2657           0 :             continue;
    2658             :           }
    2659             : 
    2660           0 :           if ((cm->interp_filter == SWITCHABLE && (!i || best_needs_copy)) ||
    2661           0 :               (cm->interp_filter != SWITCHABLE &&
    2662           0 :                (cm->interp_filter == mi->interp_filter ||
    2663           0 :                 (i == 0 && intpel_mv)))) {
    2664           0 :             restore_dst_buf(xd, orig_dst, orig_dst_stride);
    2665             :           } else {
    2666           0 :             for (j = 0; j < MAX_MB_PLANE; j++) {
    2667           0 :               xd->plane[j].dst.buf = tmp_buf + j * 64 * 64;
    2668           0 :               xd->plane[j].dst.stride = 64;
    2669             :             }
    2670             :           }
    2671           0 :           vp9_build_inter_predictors_sb(xd, mi_row, mi_col, bsize);
    2672           0 :           model_rd_for_sb(cpi, bsize, x, xd, &rate_sum, &dist_sum, &tmp_skip_sb,
    2673             :                           &tmp_skip_sse);
    2674             : 
    2675           0 :           rd = RDCOST(x->rdmult, x->rddiv, rate_sum, dist_sum);
    2676           0 :           filter_cache[i] = rd;
    2677           0 :           filter_cache[SWITCHABLE_FILTERS] =
    2678           0 :               VPXMIN(filter_cache[SWITCHABLE_FILTERS], rd + rs_rd);
    2679           0 :           if (cm->interp_filter == SWITCHABLE) rd += rs_rd;
    2680           0 :           *mask_filter = VPXMAX(*mask_filter, rd);
    2681             : 
    2682           0 :           if (i == 0 && intpel_mv) {
    2683           0 :             tmp_rate_sum = rate_sum;
    2684           0 :             tmp_dist_sum = dist_sum;
    2685             :           }
    2686             :         }
    2687             : 
    2688           0 :         if (i == 0 && cpi->sf.use_rd_breakout && ref_best_rd < INT64_MAX) {
    2689           0 :           if (rd / 2 > ref_best_rd) {
    2690           0 :             restore_dst_buf(xd, orig_dst, orig_dst_stride);
    2691           0 :             return INT64_MAX;
    2692             :           }
    2693             :         }
    2694           0 :         newbest = i == 0 || rd < best_rd;
    2695             : 
    2696           0 :         if (newbest) {
    2697           0 :           best_rd = rd;
    2698           0 :           best_filter = mi->interp_filter;
    2699           0 :           if (cm->interp_filter == SWITCHABLE && i && !intpel_mv)
    2700           0 :             best_needs_copy = !best_needs_copy;
    2701             :         }
    2702             : 
    2703           0 :         if ((cm->interp_filter == SWITCHABLE && newbest) ||
    2704           0 :             (cm->interp_filter != SWITCHABLE &&
    2705           0 :              cm->interp_filter == mi->interp_filter)) {
    2706           0 :           pred_exists = 1;
    2707           0 :           tmp_rd = best_rd;
    2708             : 
    2709           0 :           skip_txfm_sb = tmp_skip_sb;
    2710           0 :           skip_sse_sb = tmp_skip_sse;
    2711           0 :           memcpy(skip_txfm, x->skip_txfm, sizeof(skip_txfm));
    2712           0 :           memcpy(bsse, x->bsse, sizeof(bsse));
    2713             :         }
    2714             :       }
    2715           0 :       restore_dst_buf(xd, orig_dst, orig_dst_stride);
    2716             :     }
    2717             :   }
    2718             :   // Set the appropriate filter
    2719           0 :   mi->interp_filter =
    2720           0 :       cm->interp_filter != SWITCHABLE ? cm->interp_filter : best_filter;
    2721           0 :   rs = cm->interp_filter == SWITCHABLE ? vp9_get_switchable_rate(cpi, xd) : 0;
    2722             : 
    2723           0 :   if (pred_exists) {
    2724           0 :     if (best_needs_copy) {
    2725             :       // again temporarily set the buffers to local memory to prevent a memcpy
    2726           0 :       for (i = 0; i < MAX_MB_PLANE; i++) {
    2727           0 :         xd->plane[i].dst.buf = tmp_buf + i * 64 * 64;
    2728           0 :         xd->plane[i].dst.stride = 64;
    2729             :       }
    2730             :     }
    2731           0 :     rd = tmp_rd + RDCOST(x->rdmult, x->rddiv, rs, 0);
    2732             :   } else {
    2733             :     int tmp_rate;
    2734             :     int64_t tmp_dist;
    2735             :     // Handles the special case when a filter that is not in the
    2736             :     // switchable list (ex. bilinear) is indicated at the frame level, or
    2737             :     // skip condition holds.
    2738           0 :     vp9_build_inter_predictors_sb(xd, mi_row, mi_col, bsize);
    2739           0 :     model_rd_for_sb(cpi, bsize, x, xd, &tmp_rate, &tmp_dist, &skip_txfm_sb,
    2740             :                     &skip_sse_sb);
    2741           0 :     rd = RDCOST(x->rdmult, x->rddiv, rs + tmp_rate, tmp_dist);
    2742           0 :     memcpy(skip_txfm, x->skip_txfm, sizeof(skip_txfm));
    2743           0 :     memcpy(bsse, x->bsse, sizeof(bsse));
    2744             :   }
    2745             : 
    2746           0 :   if (!is_comp_pred) single_filter[this_mode][refs[0]] = mi->interp_filter;
    2747             : 
    2748           0 :   if (cpi->sf.adaptive_mode_search)
    2749           0 :     if (is_comp_pred)
    2750           0 :       if (single_skippable[this_mode][refs[0]] &&
    2751           0 :           single_skippable[this_mode][refs[1]])
    2752           0 :         memset(skip_txfm, SKIP_TXFM_AC_DC, sizeof(skip_txfm));
    2753             : 
    2754           0 :   if (cpi->sf.use_rd_breakout && ref_best_rd < INT64_MAX) {
    2755             :     // if current pred_error modeled rd is substantially more than the best
    2756             :     // so far, do not bother doing full rd
    2757           0 :     if (rd / 2 > ref_best_rd) {
    2758           0 :       restore_dst_buf(xd, orig_dst, orig_dst_stride);
    2759           0 :       return INT64_MAX;
    2760             :     }
    2761             :   }
    2762             : 
    2763           0 :   if (cm->interp_filter == SWITCHABLE) *rate2 += rs;
    2764             : 
    2765           0 :   memcpy(x->skip_txfm, skip_txfm, sizeof(skip_txfm));
    2766           0 :   memcpy(x->bsse, bsse, sizeof(bsse));
    2767             : 
    2768           0 :   if (!skip_txfm_sb) {
    2769             :     int skippable_y, skippable_uv;
    2770           0 :     int64_t sseuv = INT64_MAX;
    2771           0 :     int64_t rdcosty = INT64_MAX;
    2772             : 
    2773             :     // Y cost and distortion
    2774           0 :     vp9_subtract_plane(x, bsize, 0);
    2775           0 :     super_block_yrd(cpi, x, rate_y, &distortion_y, &skippable_y, psse, bsize,
    2776             :                     ref_best_rd);
    2777             : 
    2778           0 :     if (*rate_y == INT_MAX) {
    2779           0 :       *rate2 = INT_MAX;
    2780           0 :       *distortion = INT64_MAX;
    2781           0 :       restore_dst_buf(xd, orig_dst, orig_dst_stride);
    2782           0 :       return INT64_MAX;
    2783             :     }
    2784             : 
    2785           0 :     *rate2 += *rate_y;
    2786           0 :     *distortion += distortion_y;
    2787             : 
    2788           0 :     rdcosty = RDCOST(x->rdmult, x->rddiv, *rate2, *distortion);
    2789           0 :     rdcosty = VPXMIN(rdcosty, RDCOST(x->rdmult, x->rddiv, 0, *psse));
    2790             : 
    2791           0 :     if (!super_block_uvrd(cpi, x, rate_uv, &distortion_uv, &skippable_uv,
    2792             :                           &sseuv, bsize, ref_best_rd - rdcosty)) {
    2793           0 :       *rate2 = INT_MAX;
    2794           0 :       *distortion = INT64_MAX;
    2795           0 :       restore_dst_buf(xd, orig_dst, orig_dst_stride);
    2796           0 :       return INT64_MAX;
    2797             :     }
    2798             : 
    2799           0 :     *psse += sseuv;
    2800           0 :     *rate2 += *rate_uv;
    2801           0 :     *distortion += distortion_uv;
    2802           0 :     *skippable = skippable_y && skippable_uv;
    2803             :   } else {
    2804           0 :     x->skip = 1;
    2805           0 :     *disable_skip = 1;
    2806             : 
    2807             :     // The cost of skip bit needs to be added.
    2808           0 :     *rate2 += vp9_cost_bit(vp9_get_skip_prob(cm, xd), 1);
    2809             : 
    2810           0 :     *distortion = skip_sse_sb;
    2811             :   }
    2812             : 
    2813           0 :   if (!is_comp_pred) single_skippable[this_mode][refs[0]] = *skippable;
    2814             : 
    2815           0 :   restore_dst_buf(xd, orig_dst, orig_dst_stride);
    2816           0 :   return 0;  // The rate-distortion cost will be re-calculated by caller.
    2817             : }
    2818             : 
    2819           0 : void vp9_rd_pick_intra_mode_sb(VP9_COMP *cpi, MACROBLOCK *x, RD_COST *rd_cost,
    2820             :                                BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx,
    2821             :                                int64_t best_rd) {
    2822           0 :   VP9_COMMON *const cm = &cpi->common;
    2823           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    2824           0 :   struct macroblockd_plane *const pd = xd->plane;
    2825           0 :   int rate_y = 0, rate_uv = 0, rate_y_tokenonly = 0, rate_uv_tokenonly = 0;
    2826           0 :   int y_skip = 0, uv_skip = 0;
    2827           0 :   int64_t dist_y = 0, dist_uv = 0;
    2828             :   TX_SIZE max_uv_tx_size;
    2829           0 :   x->skip_encode = 0;
    2830           0 :   ctx->skip = 0;
    2831           0 :   xd->mi[0]->ref_frame[0] = INTRA_FRAME;
    2832           0 :   xd->mi[0]->ref_frame[1] = NONE;
    2833             :   // Initialize interp_filter here so we do not have to check for inter block
    2834             :   // modes in get_pred_context_switchable_interp()
    2835           0 :   xd->mi[0]->interp_filter = SWITCHABLE_FILTERS;
    2836             : 
    2837           0 :   if (bsize >= BLOCK_8X8) {
    2838           0 :     if (rd_pick_intra_sby_mode(cpi, x, &rate_y, &rate_y_tokenonly, &dist_y,
    2839             :                                &y_skip, bsize, best_rd) >= best_rd) {
    2840           0 :       rd_cost->rate = INT_MAX;
    2841           0 :       return;
    2842             :     }
    2843             :   } else {
    2844           0 :     y_skip = 0;
    2845           0 :     if (rd_pick_intra_sub_8x8_y_mode(cpi, x, &rate_y, &rate_y_tokenonly,
    2846             :                                      &dist_y, best_rd) >= best_rd) {
    2847           0 :       rd_cost->rate = INT_MAX;
    2848           0 :       return;
    2849             :     }
    2850             :   }
    2851           0 :   max_uv_tx_size = uv_txsize_lookup[bsize][xd->mi[0]->tx_size]
    2852           0 :                                    [pd[1].subsampling_x][pd[1].subsampling_y];
    2853           0 :   rd_pick_intra_sbuv_mode(cpi, x, ctx, &rate_uv, &rate_uv_tokenonly, &dist_uv,
    2854             :                           &uv_skip, VPXMAX(BLOCK_8X8, bsize), max_uv_tx_size);
    2855             : 
    2856           0 :   if (y_skip && uv_skip) {
    2857           0 :     rd_cost->rate = rate_y + rate_uv - rate_y_tokenonly - rate_uv_tokenonly +
    2858           0 :                     vp9_cost_bit(vp9_get_skip_prob(cm, xd), 1);
    2859           0 :     rd_cost->dist = dist_y + dist_uv;
    2860             :   } else {
    2861           0 :     rd_cost->rate =
    2862           0 :         rate_y + rate_uv + vp9_cost_bit(vp9_get_skip_prob(cm, xd), 0);
    2863           0 :     rd_cost->dist = dist_y + dist_uv;
    2864             :   }
    2865             : 
    2866           0 :   ctx->mic = *xd->mi[0];
    2867           0 :   ctx->mbmi_ext = *x->mbmi_ext;
    2868           0 :   rd_cost->rdcost = RDCOST(x->rdmult, x->rddiv, rd_cost->rate, rd_cost->dist);
    2869             : }
    2870             : 
    2871             : // This function is designed to apply a bias or adjustment to an rd value based
    2872             : // on the relative variance of the source and reconstruction.
    2873             : #define LOW_VAR_THRESH 16
    2874             : #define VLOW_ADJ_MAX 25
    2875             : #define VHIGH_ADJ_MAX 8
    2876           0 : static void rd_variance_adjustment(VP9_COMP *cpi, MACROBLOCK *x,
    2877             :                                    BLOCK_SIZE bsize, int64_t *this_rd,
    2878             :                                    MV_REFERENCE_FRAME ref_frame,
    2879             :                                    unsigned int source_variance) {
    2880           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    2881             :   unsigned int recon_variance;
    2882           0 :   unsigned int absvar_diff = 0;
    2883           0 :   int64_t var_error = 0;
    2884           0 :   int64_t var_factor = 0;
    2885             : 
    2886           0 :   if (*this_rd == INT64_MAX) return;
    2887             : 
    2888             : #if CONFIG_VP9_HIGHBITDEPTH
    2889             :   if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    2890             :     recon_variance = vp9_high_get_sby_perpixel_variance(cpi, &xd->plane[0].dst,
    2891             :                                                         bsize, xd->bd);
    2892             :   } else {
    2893             :     recon_variance =
    2894             :         vp9_get_sby_perpixel_variance(cpi, &xd->plane[0].dst, bsize);
    2895             :   }
    2896             : #else
    2897           0 :   recon_variance = vp9_get_sby_perpixel_variance(cpi, &xd->plane[0].dst, bsize);
    2898             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    2899             : 
    2900           0 :   if ((source_variance + recon_variance) > LOW_VAR_THRESH) {
    2901           0 :     absvar_diff = (source_variance > recon_variance)
    2902             :                       ? (source_variance - recon_variance)
    2903           0 :                       : (recon_variance - source_variance);
    2904             : 
    2905           0 :     var_error = ((int64_t)200 * source_variance * recon_variance) /
    2906           0 :                 (((int64_t)source_variance * source_variance) +
    2907           0 :                  ((int64_t)recon_variance * recon_variance));
    2908           0 :     var_error = 100 - var_error;
    2909             :   }
    2910             : 
    2911             :   // Source variance above a threshold and ref frame is intra.
    2912             :   // This case is targeted mainly at discouraging intra modes that give rise
    2913             :   // to a predictor with a low spatial complexity compared to the source.
    2914           0 :   if ((source_variance > LOW_VAR_THRESH) && (ref_frame == INTRA_FRAME) &&
    2915             :       (source_variance > recon_variance)) {
    2916           0 :     var_factor = VPXMIN(absvar_diff, VPXMIN(VLOW_ADJ_MAX, var_error));
    2917             :     // A second possible case of interest is where the source variance
    2918             :     // is very low and we wish to discourage false texture or motion trails.
    2919           0 :   } else if ((source_variance < (LOW_VAR_THRESH >> 1)) &&
    2920             :              (recon_variance > source_variance)) {
    2921           0 :     var_factor = VPXMIN(absvar_diff, VPXMIN(VHIGH_ADJ_MAX, var_error));
    2922             :   }
    2923           0 :   *this_rd += (*this_rd * var_factor) / 100;
    2924             : }
    2925             : 
    2926             : // Do we have an internal image edge (e.g. formatting bars).
    2927           0 : int vp9_internal_image_edge(VP9_COMP *cpi) {
    2928           0 :   return (cpi->oxcf.pass == 2) &&
    2929           0 :          ((cpi->twopass.this_frame_stats.inactive_zone_rows > 0) ||
    2930           0 :           (cpi->twopass.this_frame_stats.inactive_zone_cols > 0));
    2931             : }
    2932             : 
    2933             : // Checks to see if a super block is on a horizontal image edge.
    2934             : // In most cases this is the "real" edge unless there are formatting
    2935             : // bars embedded in the stream.
    2936           0 : int vp9_active_h_edge(VP9_COMP *cpi, int mi_row, int mi_step) {
    2937           0 :   int top_edge = 0;
    2938           0 :   int bottom_edge = cpi->common.mi_rows;
    2939           0 :   int is_active_h_edge = 0;
    2940             : 
    2941             :   // For two pass account for any formatting bars detected.
    2942           0 :   if (cpi->oxcf.pass == 2) {
    2943           0 :     TWO_PASS *twopass = &cpi->twopass;
    2944             : 
    2945             :     // The inactive region is specified in MBs not mi units.
    2946             :     // The image edge is in the following MB row.
    2947           0 :     top_edge += (int)(twopass->this_frame_stats.inactive_zone_rows * 2);
    2948             : 
    2949           0 :     bottom_edge -= (int)(twopass->this_frame_stats.inactive_zone_rows * 2);
    2950           0 :     bottom_edge = VPXMAX(top_edge, bottom_edge);
    2951             :   }
    2952             : 
    2953           0 :   if (((top_edge >= mi_row) && (top_edge < (mi_row + mi_step))) ||
    2954           0 :       ((bottom_edge >= mi_row) && (bottom_edge < (mi_row + mi_step)))) {
    2955           0 :     is_active_h_edge = 1;
    2956             :   }
    2957           0 :   return is_active_h_edge;
    2958             : }
    2959             : 
    2960             : // Checks to see if a super block is on a vertical image edge.
    2961             : // In most cases this is the "real" edge unless there are formatting
    2962             : // bars embedded in the stream.
    2963           0 : int vp9_active_v_edge(VP9_COMP *cpi, int mi_col, int mi_step) {
    2964           0 :   int left_edge = 0;
    2965           0 :   int right_edge = cpi->common.mi_cols;
    2966           0 :   int is_active_v_edge = 0;
    2967             : 
    2968             :   // For two pass account for any formatting bars detected.
    2969           0 :   if (cpi->oxcf.pass == 2) {
    2970           0 :     TWO_PASS *twopass = &cpi->twopass;
    2971             : 
    2972             :     // The inactive region is specified in MBs not mi units.
    2973             :     // The image edge is in the following MB row.
    2974           0 :     left_edge += (int)(twopass->this_frame_stats.inactive_zone_cols * 2);
    2975             : 
    2976           0 :     right_edge -= (int)(twopass->this_frame_stats.inactive_zone_cols * 2);
    2977           0 :     right_edge = VPXMAX(left_edge, right_edge);
    2978             :   }
    2979             : 
    2980           0 :   if (((left_edge >= mi_col) && (left_edge < (mi_col + mi_step))) ||
    2981           0 :       ((right_edge >= mi_col) && (right_edge < (mi_col + mi_step)))) {
    2982           0 :     is_active_v_edge = 1;
    2983             :   }
    2984           0 :   return is_active_v_edge;
    2985             : }
    2986             : 
    2987             : // Checks to see if a super block is at the edge of the active image.
    2988             : // In most cases this is the "real" edge unless there are formatting
    2989             : // bars embedded in the stream.
    2990           0 : int vp9_active_edge_sb(VP9_COMP *cpi, int mi_row, int mi_col) {
    2991           0 :   return vp9_active_h_edge(cpi, mi_row, MI_BLOCK_SIZE) ||
    2992           0 :          vp9_active_v_edge(cpi, mi_col, MI_BLOCK_SIZE);
    2993             : }
    2994             : 
    2995           0 : void vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, TileDataEnc *tile_data,
    2996             :                                MACROBLOCK *x, int mi_row, int mi_col,
    2997             :                                RD_COST *rd_cost, BLOCK_SIZE bsize,
    2998             :                                PICK_MODE_CONTEXT *ctx, int64_t best_rd_so_far) {
    2999           0 :   VP9_COMMON *const cm = &cpi->common;
    3000           0 :   TileInfo *const tile_info = &tile_data->tile_info;
    3001           0 :   RD_OPT *const rd_opt = &cpi->rd;
    3002           0 :   SPEED_FEATURES *const sf = &cpi->sf;
    3003           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    3004           0 :   MODE_INFO *const mi = xd->mi[0];
    3005           0 :   MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;
    3006           0 :   const struct segmentation *const seg = &cm->seg;
    3007             :   PREDICTION_MODE this_mode;
    3008             :   MV_REFERENCE_FRAME ref_frame, second_ref_frame;
    3009           0 :   unsigned char segment_id = mi->segment_id;
    3010             :   int comp_pred, i, k;
    3011             :   int_mv frame_mv[MB_MODE_COUNT][MAX_REF_FRAMES];
    3012             :   struct buf_2d yv12_mb[4][MAX_MB_PLANE];
    3013           0 :   int_mv single_newmv[MAX_REF_FRAMES] = { { 0 } };
    3014             :   INTERP_FILTER single_inter_filter[MB_MODE_COUNT][MAX_REF_FRAMES];
    3015             :   int single_skippable[MB_MODE_COUNT][MAX_REF_FRAMES];
    3016             :   static const int flag_list[4] = { 0, VP9_LAST_FLAG, VP9_GOLD_FLAG,
    3017             :                                     VP9_ALT_FLAG };
    3018           0 :   int64_t best_rd = best_rd_so_far;
    3019             :   int64_t best_pred_diff[REFERENCE_MODES];
    3020             :   int64_t best_pred_rd[REFERENCE_MODES];
    3021             :   int64_t best_filter_rd[SWITCHABLE_FILTER_CONTEXTS];
    3022             :   int64_t best_filter_diff[SWITCHABLE_FILTER_CONTEXTS];
    3023             :   MODE_INFO best_mbmode;
    3024           0 :   int best_mode_skippable = 0;
    3025           0 :   int midx, best_mode_index = -1;
    3026             :   unsigned int ref_costs_single[MAX_REF_FRAMES], ref_costs_comp[MAX_REF_FRAMES];
    3027             :   vpx_prob comp_mode_p;
    3028           0 :   int64_t best_intra_rd = INT64_MAX;
    3029           0 :   unsigned int best_pred_sse = UINT_MAX;
    3030           0 :   PREDICTION_MODE best_intra_mode = DC_PRED;
    3031             :   int rate_uv_intra[TX_SIZES], rate_uv_tokenonly[TX_SIZES];
    3032             :   int64_t dist_uv[TX_SIZES];
    3033             :   int skip_uv[TX_SIZES];
    3034             :   PREDICTION_MODE mode_uv[TX_SIZES];
    3035           0 :   const int intra_cost_penalty = vp9_get_intra_cost_penalty(
    3036             :       cm->base_qindex, cm->y_dc_delta_q, cm->bit_depth);
    3037           0 :   int best_skip2 = 0;
    3038           0 :   uint8_t ref_frame_skip_mask[2] = { 0 };
    3039           0 :   uint16_t mode_skip_mask[MAX_REF_FRAMES] = { 0 };
    3040           0 :   int mode_skip_start = sf->mode_skip_start + 1;
    3041           0 :   const int *const rd_threshes = rd_opt->threshes[segment_id][bsize];
    3042           0 :   const int *const rd_thresh_freq_fact = tile_data->thresh_freq_fact[bsize];
    3043             :   int64_t mode_threshold[MAX_MODES];
    3044           0 :   int *mode_map = tile_data->mode_map[bsize];
    3045           0 :   const int mode_search_skip_flags = sf->mode_search_skip_flags;
    3046           0 :   int64_t mask_filter = 0;
    3047             :   int64_t filter_cache[SWITCHABLE_FILTER_CONTEXTS];
    3048             : 
    3049           0 :   vp9_zero(best_mbmode);
    3050             : 
    3051           0 :   x->skip_encode = sf->skip_encode_frame && x->q_index < QIDX_SKIP_THRESH;
    3052             : 
    3053           0 :   for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i) filter_cache[i] = INT64_MAX;
    3054             : 
    3055           0 :   estimate_ref_frame_costs(cm, xd, segment_id, ref_costs_single, ref_costs_comp,
    3056             :                            &comp_mode_p);
    3057             : 
    3058           0 :   for (i = 0; i < REFERENCE_MODES; ++i) best_pred_rd[i] = INT64_MAX;
    3059           0 :   for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++)
    3060           0 :     best_filter_rd[i] = INT64_MAX;
    3061           0 :   for (i = 0; i < TX_SIZES; i++) rate_uv_intra[i] = INT_MAX;
    3062           0 :   for (i = 0; i < MAX_REF_FRAMES; ++i) x->pred_sse[i] = INT_MAX;
    3063           0 :   for (i = 0; i < MB_MODE_COUNT; ++i) {
    3064           0 :     for (k = 0; k < MAX_REF_FRAMES; ++k) {
    3065           0 :       single_inter_filter[i][k] = SWITCHABLE;
    3066           0 :       single_skippable[i][k] = 0;
    3067             :     }
    3068             :   }
    3069             : 
    3070           0 :   rd_cost->rate = INT_MAX;
    3071             : 
    3072           0 :   for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
    3073           0 :     x->pred_mv_sad[ref_frame] = INT_MAX;
    3074           0 :     if (cpi->ref_frame_flags & flag_list[ref_frame]) {
    3075           0 :       assert(get_ref_frame_buffer(cpi, ref_frame) != NULL);
    3076           0 :       setup_buffer_inter(cpi, x, ref_frame, bsize, mi_row, mi_col,
    3077             :                          frame_mv[NEARESTMV], frame_mv[NEARMV], yv12_mb);
    3078             :     }
    3079           0 :     frame_mv[NEWMV][ref_frame].as_int = INVALID_MV;
    3080           0 :     frame_mv[ZEROMV][ref_frame].as_int = 0;
    3081             :   }
    3082             : 
    3083           0 :   for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
    3084           0 :     if (!(cpi->ref_frame_flags & flag_list[ref_frame])) {
    3085             :       // Skip checking missing references in both single and compound reference
    3086             :       // modes. Note that a mode will be skipped if both reference frames
    3087             :       // are masked out.
    3088           0 :       ref_frame_skip_mask[0] |= (1 << ref_frame);
    3089           0 :       ref_frame_skip_mask[1] |= SECOND_REF_FRAME_MASK;
    3090           0 :     } else if (sf->reference_masking) {
    3091           0 :       for (i = LAST_FRAME; i <= ALTREF_FRAME; ++i) {
    3092             :         // Skip fixed mv modes for poor references
    3093           0 :         if ((x->pred_mv_sad[ref_frame] >> 2) > x->pred_mv_sad[i]) {
    3094           0 :           mode_skip_mask[ref_frame] |= INTER_NEAREST_NEAR_ZERO;
    3095           0 :           break;
    3096             :         }
    3097             :       }
    3098             :     }
    3099             :     // If the segment reference frame feature is enabled....
    3100             :     // then do nothing if the current ref frame is not allowed..
    3101           0 :     if (segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME) &&
    3102           0 :         get_segdata(seg, segment_id, SEG_LVL_REF_FRAME) != (int)ref_frame) {
    3103           0 :       ref_frame_skip_mask[0] |= (1 << ref_frame);
    3104           0 :       ref_frame_skip_mask[1] |= SECOND_REF_FRAME_MASK;
    3105             :     }
    3106             :   }
    3107             : 
    3108             :   // Disable this drop out case if the ref frame
    3109             :   // segment level feature is enabled for this segment. This is to
    3110             :   // prevent the possibility that we end up unable to pick any mode.
    3111           0 :   if (!segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME)) {
    3112             :     // Only consider ZEROMV/ALTREF_FRAME for alt ref frame,
    3113             :     // unless ARNR filtering is enabled in which case we want
    3114             :     // an unfiltered alternative. We allow near/nearest as well
    3115             :     // because they may result in zero-zero MVs but be cheaper.
    3116           0 :     if (cpi->rc.is_src_frame_alt_ref && (cpi->oxcf.arnr_max_frames == 0)) {
    3117           0 :       ref_frame_skip_mask[0] = (1 << LAST_FRAME) | (1 << GOLDEN_FRAME);
    3118           0 :       ref_frame_skip_mask[1] = SECOND_REF_FRAME_MASK;
    3119           0 :       mode_skip_mask[ALTREF_FRAME] = ~INTER_NEAREST_NEAR_ZERO;
    3120           0 :       if (frame_mv[NEARMV][ALTREF_FRAME].as_int != 0)
    3121           0 :         mode_skip_mask[ALTREF_FRAME] |= (1 << NEARMV);
    3122           0 :       if (frame_mv[NEARESTMV][ALTREF_FRAME].as_int != 0)
    3123           0 :         mode_skip_mask[ALTREF_FRAME] |= (1 << NEARESTMV);
    3124             :     }
    3125             :   }
    3126             : 
    3127           0 :   if (cpi->rc.is_src_frame_alt_ref) {
    3128           0 :     if (sf->alt_ref_search_fp) {
    3129           0 :       mode_skip_mask[ALTREF_FRAME] = 0;
    3130           0 :       ref_frame_skip_mask[0] = ~(1 << ALTREF_FRAME);
    3131           0 :       ref_frame_skip_mask[1] = SECOND_REF_FRAME_MASK;
    3132             :     }
    3133             :   }
    3134             : 
    3135           0 :   if (sf->alt_ref_search_fp)
    3136           0 :     if (!cm->show_frame && x->pred_mv_sad[GOLDEN_FRAME] < INT_MAX)
    3137           0 :       if (x->pred_mv_sad[ALTREF_FRAME] > (x->pred_mv_sad[GOLDEN_FRAME] << 1))
    3138           0 :         mode_skip_mask[ALTREF_FRAME] |= INTER_ALL;
    3139             : 
    3140           0 :   if (sf->adaptive_mode_search) {
    3141           0 :     if (cm->show_frame && !cpi->rc.is_src_frame_alt_ref &&
    3142           0 :         cpi->rc.frames_since_golden >= 3)
    3143           0 :       if (x->pred_mv_sad[GOLDEN_FRAME] > (x->pred_mv_sad[LAST_FRAME] << 1))
    3144           0 :         mode_skip_mask[GOLDEN_FRAME] |= INTER_ALL;
    3145             :   }
    3146             : 
    3147           0 :   if (bsize > sf->max_intra_bsize) {
    3148           0 :     ref_frame_skip_mask[0] |= (1 << INTRA_FRAME);
    3149           0 :     ref_frame_skip_mask[1] |= (1 << INTRA_FRAME);
    3150             :   }
    3151             : 
    3152           0 :   mode_skip_mask[INTRA_FRAME] |=
    3153           0 :       ~(sf->intra_y_mode_mask[max_txsize_lookup[bsize]]);
    3154             : 
    3155           0 :   for (i = 0; i <= LAST_NEW_MV_INDEX; ++i) mode_threshold[i] = 0;
    3156           0 :   for (i = LAST_NEW_MV_INDEX + 1; i < MAX_MODES; ++i)
    3157           0 :     mode_threshold[i] = ((int64_t)rd_threshes[i] * rd_thresh_freq_fact[i]) >> 5;
    3158             : 
    3159           0 :   midx = sf->schedule_mode_search ? mode_skip_start : 0;
    3160           0 :   while (midx > 4) {
    3161           0 :     uint8_t end_pos = 0;
    3162           0 :     for (i = 5; i < midx; ++i) {
    3163           0 :       if (mode_threshold[mode_map[i - 1]] > mode_threshold[mode_map[i]]) {
    3164           0 :         uint8_t tmp = mode_map[i];
    3165           0 :         mode_map[i] = mode_map[i - 1];
    3166           0 :         mode_map[i - 1] = tmp;
    3167           0 :         end_pos = i;
    3168             :       }
    3169             :     }
    3170           0 :     midx = end_pos;
    3171             :   }
    3172             : 
    3173           0 :   for (midx = 0; midx < MAX_MODES; ++midx) {
    3174           0 :     int mode_index = mode_map[midx];
    3175           0 :     int mode_excluded = 0;
    3176           0 :     int64_t this_rd = INT64_MAX;
    3177           0 :     int disable_skip = 0;
    3178           0 :     int compmode_cost = 0;
    3179           0 :     int rate2 = 0, rate_y = 0, rate_uv = 0;
    3180           0 :     int64_t distortion2 = 0, distortion_y = 0, distortion_uv = 0;
    3181           0 :     int skippable = 0;
    3182           0 :     int this_skip2 = 0;
    3183           0 :     int64_t total_sse = INT64_MAX;
    3184           0 :     int early_term = 0;
    3185             : 
    3186           0 :     this_mode = vp9_mode_order[mode_index].mode;
    3187           0 :     ref_frame = vp9_mode_order[mode_index].ref_frame[0];
    3188           0 :     second_ref_frame = vp9_mode_order[mode_index].ref_frame[1];
    3189             : 
    3190             :     // Look at the reference frame of the best mode so far and set the
    3191             :     // skip mask to look at a subset of the remaining modes.
    3192           0 :     if (midx == mode_skip_start && best_mode_index >= 0) {
    3193           0 :       switch (best_mbmode.ref_frame[0]) {
    3194           0 :         case INTRA_FRAME: break;
    3195             :         case LAST_FRAME:
    3196           0 :           ref_frame_skip_mask[0] |= LAST_FRAME_MODE_MASK;
    3197           0 :           ref_frame_skip_mask[1] |= SECOND_REF_FRAME_MASK;
    3198           0 :           break;
    3199             :         case GOLDEN_FRAME:
    3200           0 :           ref_frame_skip_mask[0] |= GOLDEN_FRAME_MODE_MASK;
    3201           0 :           ref_frame_skip_mask[1] |= SECOND_REF_FRAME_MASK;
    3202           0 :           break;
    3203           0 :         case ALTREF_FRAME: ref_frame_skip_mask[0] |= ALT_REF_MODE_MASK; break;
    3204             :         case NONE:
    3205           0 :         case MAX_REF_FRAMES: assert(0 && "Invalid Reference frame"); break;
    3206             :       }
    3207             :     }
    3208             : 
    3209           0 :     if ((ref_frame_skip_mask[0] & (1 << ref_frame)) &&
    3210           0 :         (ref_frame_skip_mask[1] & (1 << VPXMAX(0, second_ref_frame))))
    3211           0 :       continue;
    3212             : 
    3213           0 :     if (mode_skip_mask[ref_frame] & (1 << this_mode)) continue;
    3214             : 
    3215             :     // Test best rd so far against threshold for trying this mode.
    3216           0 :     if (best_mode_skippable && sf->schedule_mode_search)
    3217           0 :       mode_threshold[mode_index] <<= 1;
    3218             : 
    3219           0 :     if (best_rd < mode_threshold[mode_index]) continue;
    3220             : 
    3221           0 :     if (sf->motion_field_mode_search) {
    3222           0 :       const int mi_width = VPXMIN(num_8x8_blocks_wide_lookup[bsize],
    3223             :                                   tile_info->mi_col_end - mi_col);
    3224           0 :       const int mi_height = VPXMIN(num_8x8_blocks_high_lookup[bsize],
    3225             :                                    tile_info->mi_row_end - mi_row);
    3226           0 :       const int bsl = mi_width_log2_lookup[bsize];
    3227           0 :       int cb_partition_search_ctrl =
    3228           0 :           (((mi_row + mi_col) >> bsl) +
    3229           0 :            get_chessboard_index(cm->current_video_frame)) &
    3230             :           0x1;
    3231             :       MODE_INFO *ref_mi;
    3232           0 :       int const_motion = 1;
    3233           0 :       int skip_ref_frame = !cb_partition_search_ctrl;
    3234           0 :       MV_REFERENCE_FRAME rf = NONE;
    3235             :       int_mv ref_mv;
    3236           0 :       ref_mv.as_int = INVALID_MV;
    3237             : 
    3238           0 :       if ((mi_row - 1) >= tile_info->mi_row_start) {
    3239           0 :         ref_mv = xd->mi[-xd->mi_stride]->mv[0];
    3240           0 :         rf = xd->mi[-xd->mi_stride]->ref_frame[0];
    3241           0 :         for (i = 0; i < mi_width; ++i) {
    3242           0 :           ref_mi = xd->mi[-xd->mi_stride + i];
    3243           0 :           const_motion &= (ref_mv.as_int == ref_mi->mv[0].as_int) &&
    3244           0 :                           (ref_frame == ref_mi->ref_frame[0]);
    3245           0 :           skip_ref_frame &= (rf == ref_mi->ref_frame[0]);
    3246             :         }
    3247             :       }
    3248             : 
    3249           0 :       if ((mi_col - 1) >= tile_info->mi_col_start) {
    3250           0 :         if (ref_mv.as_int == INVALID_MV) ref_mv = xd->mi[-1]->mv[0];
    3251           0 :         if (rf == NONE) rf = xd->mi[-1]->ref_frame[0];
    3252           0 :         for (i = 0; i < mi_height; ++i) {
    3253           0 :           ref_mi = xd->mi[i * xd->mi_stride - 1];
    3254           0 :           const_motion &= (ref_mv.as_int == ref_mi->mv[0].as_int) &&
    3255           0 :                           (ref_frame == ref_mi->ref_frame[0]);
    3256           0 :           skip_ref_frame &= (rf == ref_mi->ref_frame[0]);
    3257             :         }
    3258             :       }
    3259             : 
    3260           0 :       if (skip_ref_frame && this_mode != NEARESTMV && this_mode != NEWMV)
    3261           0 :         if (rf > INTRA_FRAME)
    3262           0 :           if (ref_frame != rf) continue;
    3263             : 
    3264           0 :       if (const_motion)
    3265           0 :         if (this_mode == NEARMV || this_mode == ZEROMV) continue;
    3266             :     }
    3267             : 
    3268           0 :     comp_pred = second_ref_frame > INTRA_FRAME;
    3269           0 :     if (comp_pred) {
    3270           0 :       if (!cpi->allow_comp_inter_inter) continue;
    3271             : 
    3272             :       // Skip compound inter modes if ARF is not available.
    3273           0 :       if (!(cpi->ref_frame_flags & flag_list[second_ref_frame])) continue;
    3274             : 
    3275             :       // Do not allow compound prediction if the segment level reference frame
    3276             :       // feature is in use as in this case there can only be one reference.
    3277           0 :       if (segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME)) continue;
    3278             : 
    3279           0 :       if ((mode_search_skip_flags & FLAG_SKIP_COMP_BESTINTRA) &&
    3280           0 :           best_mode_index >= 0 && best_mbmode.ref_frame[0] == INTRA_FRAME)
    3281           0 :         continue;
    3282             : 
    3283           0 :       mode_excluded = cm->reference_mode == SINGLE_REFERENCE;
    3284             :     } else {
    3285           0 :       if (ref_frame != INTRA_FRAME)
    3286           0 :         mode_excluded = cm->reference_mode == COMPOUND_REFERENCE;
    3287             :     }
    3288             : 
    3289           0 :     if (ref_frame == INTRA_FRAME) {
    3290           0 :       if (sf->adaptive_mode_search)
    3291           0 :         if ((x->source_variance << num_pels_log2_lookup[bsize]) > best_pred_sse)
    3292           0 :           continue;
    3293             : 
    3294           0 :       if (this_mode != DC_PRED) {
    3295             :         // Disable intra modes other than DC_PRED for blocks with low variance
    3296             :         // Threshold for intra skipping based on source variance
    3297             :         // TODO(debargha): Specialize the threshold for super block sizes
    3298           0 :         const unsigned int skip_intra_var_thresh = 64;
    3299           0 :         if ((mode_search_skip_flags & FLAG_SKIP_INTRA_LOWVAR) &&
    3300           0 :             x->source_variance < skip_intra_var_thresh)
    3301           0 :           continue;
    3302             :         // Only search the oblique modes if the best so far is
    3303             :         // one of the neighboring directional modes
    3304           0 :         if ((mode_search_skip_flags & FLAG_SKIP_INTRA_BESTINTER) &&
    3305           0 :             (this_mode >= D45_PRED && this_mode <= TM_PRED)) {
    3306           0 :           if (best_mode_index >= 0 && best_mbmode.ref_frame[0] > INTRA_FRAME)
    3307           0 :             continue;
    3308             :         }
    3309           0 :         if (mode_search_skip_flags & FLAG_SKIP_INTRA_DIRMISMATCH) {
    3310           0 :           if (conditional_skipintra(this_mode, best_intra_mode)) continue;
    3311             :         }
    3312             :       }
    3313             :     } else {
    3314           0 :       const MV_REFERENCE_FRAME ref_frames[2] = { ref_frame, second_ref_frame };
    3315           0 :       if (!check_best_zero_mv(cpi, mbmi_ext->mode_context, frame_mv, this_mode,
    3316             :                               ref_frames))
    3317           0 :         continue;
    3318             :     }
    3319             : 
    3320           0 :     mi->mode = this_mode;
    3321           0 :     mi->uv_mode = DC_PRED;
    3322           0 :     mi->ref_frame[0] = ref_frame;
    3323           0 :     mi->ref_frame[1] = second_ref_frame;
    3324             :     // Evaluate all sub-pel filters irrespective of whether we can use
    3325             :     // them for this frame.
    3326           0 :     mi->interp_filter =
    3327           0 :         cm->interp_filter == SWITCHABLE ? EIGHTTAP : cm->interp_filter;
    3328           0 :     mi->mv[0].as_int = mi->mv[1].as_int = 0;
    3329             : 
    3330           0 :     x->skip = 0;
    3331           0 :     set_ref_ptrs(cm, xd, ref_frame, second_ref_frame);
    3332             : 
    3333             :     // Select prediction reference frames.
    3334           0 :     for (i = 0; i < MAX_MB_PLANE; i++) {
    3335           0 :       xd->plane[i].pre[0] = yv12_mb[ref_frame][i];
    3336           0 :       if (comp_pred) xd->plane[i].pre[1] = yv12_mb[second_ref_frame][i];
    3337             :     }
    3338             : 
    3339           0 :     if (ref_frame == INTRA_FRAME) {
    3340             :       TX_SIZE uv_tx;
    3341           0 :       struct macroblockd_plane *const pd = &xd->plane[1];
    3342           0 :       memset(x->skip_txfm, 0, sizeof(x->skip_txfm));
    3343           0 :       super_block_yrd(cpi, x, &rate_y, &distortion_y, &skippable, NULL, bsize,
    3344             :                       best_rd);
    3345           0 :       if (rate_y == INT_MAX) continue;
    3346             : 
    3347           0 :       uv_tx = uv_txsize_lookup[bsize][mi->tx_size][pd->subsampling_x]
    3348           0 :                               [pd->subsampling_y];
    3349           0 :       if (rate_uv_intra[uv_tx] == INT_MAX) {
    3350           0 :         choose_intra_uv_mode(cpi, x, ctx, bsize, uv_tx, &rate_uv_intra[uv_tx],
    3351           0 :                              &rate_uv_tokenonly[uv_tx], &dist_uv[uv_tx],
    3352           0 :                              &skip_uv[uv_tx], &mode_uv[uv_tx]);
    3353             :       }
    3354             : 
    3355           0 :       rate_uv = rate_uv_tokenonly[uv_tx];
    3356           0 :       distortion_uv = dist_uv[uv_tx];
    3357           0 :       skippable = skippable && skip_uv[uv_tx];
    3358           0 :       mi->uv_mode = mode_uv[uv_tx];
    3359             : 
    3360           0 :       rate2 = rate_y + cpi->mbmode_cost[mi->mode] + rate_uv_intra[uv_tx];
    3361           0 :       if (this_mode != DC_PRED && this_mode != TM_PRED)
    3362           0 :         rate2 += intra_cost_penalty;
    3363           0 :       distortion2 = distortion_y + distortion_uv;
    3364             :     } else {
    3365           0 :       this_rd = handle_inter_mode(
    3366             :           cpi, x, bsize, &rate2, &distortion2, &skippable, &rate_y, &rate_uv,
    3367             :           &disable_skip, frame_mv, mi_row, mi_col, single_newmv,
    3368             :           single_inter_filter, single_skippable, &total_sse, best_rd,
    3369             :           &mask_filter, filter_cache);
    3370           0 :       if (this_rd == INT64_MAX) continue;
    3371             : 
    3372           0 :       compmode_cost = vp9_cost_bit(comp_mode_p, comp_pred);
    3373             : 
    3374           0 :       if (cm->reference_mode == REFERENCE_MODE_SELECT) rate2 += compmode_cost;
    3375             :     }
    3376             : 
    3377             :     // Estimate the reference frame signaling cost and add it
    3378             :     // to the rolling cost variable.
    3379           0 :     if (comp_pred) {
    3380           0 :       rate2 += ref_costs_comp[ref_frame];
    3381             :     } else {
    3382           0 :       rate2 += ref_costs_single[ref_frame];
    3383             :     }
    3384             : 
    3385           0 :     if (!disable_skip) {
    3386           0 :       const vpx_prob skip_prob = vp9_get_skip_prob(cm, xd);
    3387           0 :       const int skip_cost0 = vp9_cost_bit(skip_prob, 0);
    3388           0 :       const int skip_cost1 = vp9_cost_bit(skip_prob, 1);
    3389             : 
    3390           0 :       if (skippable) {
    3391             :         // Back out the coefficient coding costs
    3392           0 :         rate2 -= (rate_y + rate_uv);
    3393             : 
    3394             :         // Cost the skip mb case
    3395           0 :         rate2 += skip_cost1;
    3396           0 :       } else if (ref_frame != INTRA_FRAME && !xd->lossless) {
    3397           0 :         if (RDCOST(x->rdmult, x->rddiv, rate_y + rate_uv + skip_cost0,
    3398             :                    distortion2) <
    3399           0 :             RDCOST(x->rdmult, x->rddiv, skip_cost1, total_sse)) {
    3400             :           // Add in the cost of the no skip flag.
    3401           0 :           rate2 += skip_cost0;
    3402             :         } else {
    3403             :           // FIXME(rbultje) make this work for splitmv also
    3404           0 :           assert(total_sse >= 0);
    3405             : 
    3406           0 :           rate2 += skip_cost1;
    3407           0 :           distortion2 = total_sse;
    3408           0 :           rate2 -= (rate_y + rate_uv);
    3409           0 :           this_skip2 = 1;
    3410             :         }
    3411             :       } else {
    3412             :         // Add in the cost of the no skip flag.
    3413           0 :         rate2 += skip_cost0;
    3414             :       }
    3415             : 
    3416             :       // Calculate the final RD estimate for this mode.
    3417           0 :       this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
    3418             :     }
    3419             : 
    3420             :     // Apply an adjustment to the rd value based on the similarity of the
    3421             :     // source variance and reconstructed variance.
    3422           0 :     rd_variance_adjustment(cpi, x, bsize, &this_rd, ref_frame,
    3423             :                            x->source_variance);
    3424             : 
    3425           0 :     if (ref_frame == INTRA_FRAME) {
    3426             :       // Keep record of best intra rd
    3427           0 :       if (this_rd < best_intra_rd) {
    3428           0 :         best_intra_rd = this_rd;
    3429           0 :         best_intra_mode = mi->mode;
    3430             :       }
    3431             :     }
    3432             : 
    3433           0 :     if (!disable_skip && ref_frame == INTRA_FRAME) {
    3434           0 :       for (i = 0; i < REFERENCE_MODES; ++i)
    3435           0 :         best_pred_rd[i] = VPXMIN(best_pred_rd[i], this_rd);
    3436           0 :       for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++)
    3437           0 :         best_filter_rd[i] = VPXMIN(best_filter_rd[i], this_rd);
    3438             :     }
    3439             : 
    3440             :     // Did this mode help.. i.e. is it the new best mode
    3441           0 :     if (this_rd < best_rd || x->skip) {
    3442           0 :       int max_plane = MAX_MB_PLANE;
    3443           0 :       if (!mode_excluded) {
    3444             :         // Note index of best mode so far
    3445           0 :         best_mode_index = mode_index;
    3446             : 
    3447           0 :         if (ref_frame == INTRA_FRAME) {
    3448             :           /* required for left and above block mv */
    3449           0 :           mi->mv[0].as_int = 0;
    3450           0 :           max_plane = 1;
    3451             :           // Initialize interp_filter here so we do not have to check for
    3452             :           // inter block modes in get_pred_context_switchable_interp()
    3453           0 :           mi->interp_filter = SWITCHABLE_FILTERS;
    3454             :         } else {
    3455           0 :           best_pred_sse = x->pred_sse[ref_frame];
    3456             :         }
    3457             : 
    3458           0 :         rd_cost->rate = rate2;
    3459           0 :         rd_cost->dist = distortion2;
    3460           0 :         rd_cost->rdcost = this_rd;
    3461           0 :         best_rd = this_rd;
    3462           0 :         best_mbmode = *mi;
    3463           0 :         best_skip2 = this_skip2;
    3464           0 :         best_mode_skippable = skippable;
    3465             : 
    3466           0 :         if (!x->select_tx_size) swap_block_ptr(x, ctx, 1, 0, 0, max_plane);
    3467           0 :         memcpy(ctx->zcoeff_blk, x->zcoeff_blk[mi->tx_size],
    3468           0 :                sizeof(ctx->zcoeff_blk[0]) * ctx->num_4x4_blk);
    3469             : 
    3470             :         // TODO(debargha): enhance this test with a better distortion prediction
    3471             :         // based on qp, activity mask and history
    3472           0 :         if ((mode_search_skip_flags & FLAG_EARLY_TERMINATE) &&
    3473             :             (mode_index > MIN_EARLY_TERM_INDEX)) {
    3474           0 :           int qstep = xd->plane[0].dequant[1];
    3475             :           // TODO(debargha): Enhance this by specializing for each mode_index
    3476           0 :           int scale = 4;
    3477             : #if CONFIG_VP9_HIGHBITDEPTH
    3478             :           if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    3479             :             qstep >>= (xd->bd - 8);
    3480             :           }
    3481             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    3482           0 :           if (x->source_variance < UINT_MAX) {
    3483           0 :             const int var_adjust = (x->source_variance < 16);
    3484           0 :             scale -= var_adjust;
    3485             :           }
    3486           0 :           if (ref_frame > INTRA_FRAME && distortion2 * scale < qstep * qstep) {
    3487           0 :             early_term = 1;
    3488             :           }
    3489             :         }
    3490             :       }
    3491             :     }
    3492             : 
    3493             :     /* keep record of best compound/single-only prediction */
    3494           0 :     if (!disable_skip && ref_frame != INTRA_FRAME) {
    3495             :       int64_t single_rd, hybrid_rd, single_rate, hybrid_rate;
    3496             : 
    3497           0 :       if (cm->reference_mode == REFERENCE_MODE_SELECT) {
    3498           0 :         single_rate = rate2 - compmode_cost;
    3499           0 :         hybrid_rate = rate2;
    3500             :       } else {
    3501           0 :         single_rate = rate2;
    3502           0 :         hybrid_rate = rate2 + compmode_cost;
    3503             :       }
    3504             : 
    3505           0 :       single_rd = RDCOST(x->rdmult, x->rddiv, single_rate, distortion2);
    3506           0 :       hybrid_rd = RDCOST(x->rdmult, x->rddiv, hybrid_rate, distortion2);
    3507             : 
    3508           0 :       if (!comp_pred) {
    3509           0 :         if (single_rd < best_pred_rd[SINGLE_REFERENCE])
    3510           0 :           best_pred_rd[SINGLE_REFERENCE] = single_rd;
    3511             :       } else {
    3512           0 :         if (single_rd < best_pred_rd[COMPOUND_REFERENCE])
    3513           0 :           best_pred_rd[COMPOUND_REFERENCE] = single_rd;
    3514             :       }
    3515           0 :       if (hybrid_rd < best_pred_rd[REFERENCE_MODE_SELECT])
    3516           0 :         best_pred_rd[REFERENCE_MODE_SELECT] = hybrid_rd;
    3517             : 
    3518             :       /* keep record of best filter type */
    3519           0 :       if (!mode_excluded && cm->interp_filter != BILINEAR) {
    3520           0 :         int64_t ref =
    3521           0 :             filter_cache[cm->interp_filter == SWITCHABLE ? SWITCHABLE_FILTERS
    3522           0 :                                                          : cm->interp_filter];
    3523             : 
    3524           0 :         for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++) {
    3525             :           int64_t adj_rd;
    3526           0 :           if (ref == INT64_MAX)
    3527           0 :             adj_rd = 0;
    3528           0 :           else if (filter_cache[i] == INT64_MAX)
    3529             :             // when early termination is triggered, the encoder does not have
    3530             :             // access to the rate-distortion cost. it only knows that the cost
    3531             :             // should be above the maximum valid value. hence it takes the known
    3532             :             // maximum plus an arbitrary constant as the rate-distortion cost.
    3533           0 :             adj_rd = mask_filter - ref + 10;
    3534             :           else
    3535           0 :             adj_rd = filter_cache[i] - ref;
    3536             : 
    3537           0 :           adj_rd += this_rd;
    3538           0 :           best_filter_rd[i] = VPXMIN(best_filter_rd[i], adj_rd);
    3539             :         }
    3540             :       }
    3541             :     }
    3542             : 
    3543           0 :     if (early_term) break;
    3544             : 
    3545           0 :     if (x->skip && !comp_pred) break;
    3546             :   }
    3547             : 
    3548             :   // The inter modes' rate costs are not calculated precisely in some cases.
    3549             :   // Therefore, sometimes, NEWMV is chosen instead of NEARESTMV, NEARMV, and
    3550             :   // ZEROMV. Here, checks are added for those cases, and the mode decisions
    3551             :   // are corrected.
    3552           0 :   if (best_mbmode.mode == NEWMV) {
    3553           0 :     const MV_REFERENCE_FRAME refs[2] = { best_mbmode.ref_frame[0],
    3554           0 :                                          best_mbmode.ref_frame[1] };
    3555           0 :     int comp_pred_mode = refs[1] > INTRA_FRAME;
    3556             : 
    3557           0 :     if (frame_mv[NEARESTMV][refs[0]].as_int == best_mbmode.mv[0].as_int &&
    3558           0 :         ((comp_pred_mode &&
    3559           0 :           frame_mv[NEARESTMV][refs[1]].as_int == best_mbmode.mv[1].as_int) ||
    3560             :          !comp_pred_mode))
    3561           0 :       best_mbmode.mode = NEARESTMV;
    3562           0 :     else if (frame_mv[NEARMV][refs[0]].as_int == best_mbmode.mv[0].as_int &&
    3563           0 :              ((comp_pred_mode &&
    3564           0 :                frame_mv[NEARMV][refs[1]].as_int == best_mbmode.mv[1].as_int) ||
    3565             :               !comp_pred_mode))
    3566           0 :       best_mbmode.mode = NEARMV;
    3567           0 :     else if (best_mbmode.mv[0].as_int == 0 &&
    3568           0 :              ((comp_pred_mode && best_mbmode.mv[1].as_int == 0) ||
    3569             :               !comp_pred_mode))
    3570           0 :       best_mbmode.mode = ZEROMV;
    3571             :   }
    3572             : 
    3573           0 :   if (best_mode_index < 0 || best_rd >= best_rd_so_far) {
    3574           0 :     rd_cost->rate = INT_MAX;
    3575           0 :     rd_cost->rdcost = INT64_MAX;
    3576           0 :     return;
    3577             :   }
    3578             : 
    3579             :   // If we used an estimate for the uv intra rd in the loop above...
    3580           0 :   if (sf->use_uv_intra_rd_estimate) {
    3581             :     // Do Intra UV best rd mode selection if best mode choice above was intra.
    3582           0 :     if (best_mbmode.ref_frame[0] == INTRA_FRAME) {
    3583             :       TX_SIZE uv_tx_size;
    3584           0 :       *mi = best_mbmode;
    3585           0 :       uv_tx_size = get_uv_tx_size(mi, &xd->plane[1]);
    3586           0 :       rd_pick_intra_sbuv_mode(cpi, x, ctx, &rate_uv_intra[uv_tx_size],
    3587           0 :                               &rate_uv_tokenonly[uv_tx_size],
    3588           0 :                               &dist_uv[uv_tx_size], &skip_uv[uv_tx_size],
    3589             :                               bsize < BLOCK_8X8 ? BLOCK_8X8 : bsize,
    3590             :                               uv_tx_size);
    3591             :     }
    3592             :   }
    3593             : 
    3594           0 :   assert((cm->interp_filter == SWITCHABLE) ||
    3595             :          (cm->interp_filter == best_mbmode.interp_filter) ||
    3596             :          !is_inter_block(&best_mbmode));
    3597             : 
    3598           0 :   if (!cpi->rc.is_src_frame_alt_ref)
    3599           0 :     vp9_update_rd_thresh_fact(tile_data->thresh_freq_fact,
    3600             :                               sf->adaptive_rd_thresh, bsize, best_mode_index);
    3601             : 
    3602             :   // macroblock modes
    3603           0 :   *mi = best_mbmode;
    3604           0 :   x->skip |= best_skip2;
    3605             : 
    3606           0 :   for (i = 0; i < REFERENCE_MODES; ++i) {
    3607           0 :     if (best_pred_rd[i] == INT64_MAX)
    3608           0 :       best_pred_diff[i] = INT_MIN;
    3609             :     else
    3610           0 :       best_pred_diff[i] = best_rd - best_pred_rd[i];
    3611             :   }
    3612             : 
    3613           0 :   if (!x->skip) {
    3614           0 :     for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++) {
    3615           0 :       if (best_filter_rd[i] == INT64_MAX)
    3616           0 :         best_filter_diff[i] = 0;
    3617             :       else
    3618           0 :         best_filter_diff[i] = best_rd - best_filter_rd[i];
    3619             :     }
    3620           0 :     if (cm->interp_filter == SWITCHABLE)
    3621           0 :       assert(best_filter_diff[SWITCHABLE_FILTERS] == 0);
    3622             :   } else {
    3623           0 :     vp9_zero(best_filter_diff);
    3624             :   }
    3625             : 
    3626             :   // TODO(yunqingwang): Moving this line in front of the above best_filter_diff
    3627             :   // updating code causes PSNR loss. Need to figure out the confliction.
    3628           0 :   x->skip |= best_mode_skippable;
    3629             : 
    3630           0 :   if (!x->skip && !x->select_tx_size) {
    3631           0 :     int has_high_freq_coeff = 0;
    3632             :     int plane;
    3633           0 :     int max_plane = is_inter_block(xd->mi[0]) ? MAX_MB_PLANE : 1;
    3634           0 :     for (plane = 0; plane < max_plane; ++plane) {
    3635           0 :       x->plane[plane].eobs = ctx->eobs_pbuf[plane][1];
    3636           0 :       has_high_freq_coeff |= vp9_has_high_freq_in_plane(x, bsize, plane);
    3637             :     }
    3638             : 
    3639           0 :     for (plane = max_plane; plane < MAX_MB_PLANE; ++plane) {
    3640           0 :       x->plane[plane].eobs = ctx->eobs_pbuf[plane][2];
    3641           0 :       has_high_freq_coeff |= vp9_has_high_freq_in_plane(x, bsize, plane);
    3642             :     }
    3643             : 
    3644           0 :     best_mode_skippable |= !has_high_freq_coeff;
    3645             :   }
    3646             : 
    3647           0 :   assert(best_mode_index >= 0);
    3648             : 
    3649           0 :   store_coding_context(x, ctx, best_mode_index, best_pred_diff,
    3650             :                        best_filter_diff, best_mode_skippable);
    3651             : }
    3652             : 
    3653           0 : void vp9_rd_pick_inter_mode_sb_seg_skip(VP9_COMP *cpi, TileDataEnc *tile_data,
    3654             :                                         MACROBLOCK *x, RD_COST *rd_cost,
    3655             :                                         BLOCK_SIZE bsize,
    3656             :                                         PICK_MODE_CONTEXT *ctx,
    3657             :                                         int64_t best_rd_so_far) {
    3658           0 :   VP9_COMMON *const cm = &cpi->common;
    3659           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    3660           0 :   MODE_INFO *const mi = xd->mi[0];
    3661           0 :   unsigned char segment_id = mi->segment_id;
    3662           0 :   const int comp_pred = 0;
    3663             :   int i;
    3664             :   int64_t best_pred_diff[REFERENCE_MODES];
    3665             :   int64_t best_filter_diff[SWITCHABLE_FILTER_CONTEXTS];
    3666             :   unsigned int ref_costs_single[MAX_REF_FRAMES], ref_costs_comp[MAX_REF_FRAMES];
    3667             :   vpx_prob comp_mode_p;
    3668           0 :   INTERP_FILTER best_filter = SWITCHABLE;
    3669           0 :   int64_t this_rd = INT64_MAX;
    3670           0 :   int rate2 = 0;
    3671           0 :   const int64_t distortion2 = 0;
    3672             : 
    3673           0 :   x->skip_encode = cpi->sf.skip_encode_frame && x->q_index < QIDX_SKIP_THRESH;
    3674             : 
    3675           0 :   estimate_ref_frame_costs(cm, xd, segment_id, ref_costs_single, ref_costs_comp,
    3676             :                            &comp_mode_p);
    3677             : 
    3678           0 :   for (i = 0; i < MAX_REF_FRAMES; ++i) x->pred_sse[i] = INT_MAX;
    3679           0 :   for (i = LAST_FRAME; i < MAX_REF_FRAMES; ++i) x->pred_mv_sad[i] = INT_MAX;
    3680             : 
    3681           0 :   rd_cost->rate = INT_MAX;
    3682             : 
    3683           0 :   assert(segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP));
    3684             : 
    3685           0 :   mi->mode = ZEROMV;
    3686           0 :   mi->uv_mode = DC_PRED;
    3687           0 :   mi->ref_frame[0] = LAST_FRAME;
    3688           0 :   mi->ref_frame[1] = NONE;
    3689           0 :   mi->mv[0].as_int = 0;
    3690           0 :   x->skip = 1;
    3691             : 
    3692           0 :   if (cm->interp_filter != BILINEAR) {
    3693           0 :     best_filter = EIGHTTAP;
    3694           0 :     if (cm->interp_filter == SWITCHABLE &&
    3695           0 :         x->source_variance >= cpi->sf.disable_filter_search_var_thresh) {
    3696             :       int rs;
    3697           0 :       int best_rs = INT_MAX;
    3698           0 :       for (i = 0; i < SWITCHABLE_FILTERS; ++i) {
    3699           0 :         mi->interp_filter = i;
    3700           0 :         rs = vp9_get_switchable_rate(cpi, xd);
    3701           0 :         if (rs < best_rs) {
    3702           0 :           best_rs = rs;
    3703           0 :           best_filter = mi->interp_filter;
    3704             :         }
    3705             :       }
    3706             :     }
    3707             :   }
    3708             :   // Set the appropriate filter
    3709           0 :   if (cm->interp_filter == SWITCHABLE) {
    3710           0 :     mi->interp_filter = best_filter;
    3711           0 :     rate2 += vp9_get_switchable_rate(cpi, xd);
    3712             :   } else {
    3713           0 :     mi->interp_filter = cm->interp_filter;
    3714             :   }
    3715             : 
    3716           0 :   if (cm->reference_mode == REFERENCE_MODE_SELECT)
    3717           0 :     rate2 += vp9_cost_bit(comp_mode_p, comp_pred);
    3718             : 
    3719             :   // Estimate the reference frame signaling cost and add it
    3720             :   // to the rolling cost variable.
    3721           0 :   rate2 += ref_costs_single[LAST_FRAME];
    3722           0 :   this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
    3723             : 
    3724           0 :   rd_cost->rate = rate2;
    3725           0 :   rd_cost->dist = distortion2;
    3726           0 :   rd_cost->rdcost = this_rd;
    3727             : 
    3728           0 :   if (this_rd >= best_rd_so_far) {
    3729           0 :     rd_cost->rate = INT_MAX;
    3730           0 :     rd_cost->rdcost = INT64_MAX;
    3731           0 :     return;
    3732             :   }
    3733             : 
    3734           0 :   assert((cm->interp_filter == SWITCHABLE) ||
    3735             :          (cm->interp_filter == mi->interp_filter));
    3736             : 
    3737           0 :   vp9_update_rd_thresh_fact(tile_data->thresh_freq_fact,
    3738             :                             cpi->sf.adaptive_rd_thresh, bsize, THR_ZEROMV);
    3739             : 
    3740           0 :   vp9_zero(best_pred_diff);
    3741           0 :   vp9_zero(best_filter_diff);
    3742             : 
    3743           0 :   if (!x->select_tx_size) swap_block_ptr(x, ctx, 1, 0, 0, MAX_MB_PLANE);
    3744           0 :   store_coding_context(x, ctx, THR_ZEROMV, best_pred_diff, best_filter_diff, 0);
    3745             : }
    3746             : 
    3747           0 : void vp9_rd_pick_inter_mode_sub8x8(VP9_COMP *cpi, TileDataEnc *tile_data,
    3748             :                                    MACROBLOCK *x, int mi_row, int mi_col,
    3749             :                                    RD_COST *rd_cost, BLOCK_SIZE bsize,
    3750             :                                    PICK_MODE_CONTEXT *ctx,
    3751             :                                    int64_t best_rd_so_far) {
    3752           0 :   VP9_COMMON *const cm = &cpi->common;
    3753           0 :   RD_OPT *const rd_opt = &cpi->rd;
    3754           0 :   SPEED_FEATURES *const sf = &cpi->sf;
    3755           0 :   MACROBLOCKD *const xd = &x->e_mbd;
    3756           0 :   MODE_INFO *const mi = xd->mi[0];
    3757           0 :   const struct segmentation *const seg = &cm->seg;
    3758             :   MV_REFERENCE_FRAME ref_frame, second_ref_frame;
    3759           0 :   unsigned char segment_id = mi->segment_id;
    3760             :   int comp_pred, i;
    3761             :   int_mv frame_mv[MB_MODE_COUNT][MAX_REF_FRAMES];
    3762             :   struct buf_2d yv12_mb[4][MAX_MB_PLANE];
    3763             :   static const int flag_list[4] = { 0, VP9_LAST_FLAG, VP9_GOLD_FLAG,
    3764             :                                     VP9_ALT_FLAG };
    3765           0 :   int64_t best_rd = best_rd_so_far;
    3766           0 :   int64_t best_yrd = best_rd_so_far;  // FIXME(rbultje) more precise
    3767             :   int64_t best_pred_diff[REFERENCE_MODES];
    3768             :   int64_t best_pred_rd[REFERENCE_MODES];
    3769             :   int64_t best_filter_rd[SWITCHABLE_FILTER_CONTEXTS];
    3770             :   int64_t best_filter_diff[SWITCHABLE_FILTER_CONTEXTS];
    3771             :   MODE_INFO best_mbmode;
    3772           0 :   int ref_index, best_ref_index = 0;
    3773             :   unsigned int ref_costs_single[MAX_REF_FRAMES], ref_costs_comp[MAX_REF_FRAMES];
    3774             :   vpx_prob comp_mode_p;
    3775           0 :   INTERP_FILTER tmp_best_filter = SWITCHABLE;
    3776             :   int rate_uv_intra, rate_uv_tokenonly;
    3777             :   int64_t dist_uv;
    3778             :   int skip_uv;
    3779           0 :   PREDICTION_MODE mode_uv = DC_PRED;
    3780           0 :   const int intra_cost_penalty = vp9_get_intra_cost_penalty(
    3781             :       cm->base_qindex, cm->y_dc_delta_q, cm->bit_depth);
    3782             :   int_mv seg_mvs[4][MAX_REF_FRAMES];
    3783             :   b_mode_info best_bmodes[4];
    3784           0 :   int best_skip2 = 0;
    3785           0 :   int ref_frame_skip_mask[2] = { 0 };
    3786           0 :   int64_t mask_filter = 0;
    3787             :   int64_t filter_cache[SWITCHABLE_FILTER_CONTEXTS];
    3788           0 :   int internal_active_edge =
    3789           0 :       vp9_active_edge_sb(cpi, mi_row, mi_col) && vp9_internal_image_edge(cpi);
    3790             : 
    3791           0 :   x->skip_encode = sf->skip_encode_frame && x->q_index < QIDX_SKIP_THRESH;
    3792           0 :   memset(x->zcoeff_blk[TX_4X4], 0, 4);
    3793           0 :   vp9_zero(best_mbmode);
    3794             : 
    3795           0 :   for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i) filter_cache[i] = INT64_MAX;
    3796             : 
    3797           0 :   for (i = 0; i < 4; i++) {
    3798             :     int j;
    3799           0 :     for (j = 0; j < MAX_REF_FRAMES; j++) seg_mvs[i][j].as_int = INVALID_MV;
    3800             :   }
    3801             : 
    3802           0 :   estimate_ref_frame_costs(cm, xd, segment_id, ref_costs_single, ref_costs_comp,
    3803             :                            &comp_mode_p);
    3804             : 
    3805           0 :   for (i = 0; i < REFERENCE_MODES; ++i) best_pred_rd[i] = INT64_MAX;
    3806           0 :   for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++)
    3807           0 :     best_filter_rd[i] = INT64_MAX;
    3808           0 :   rate_uv_intra = INT_MAX;
    3809             : 
    3810           0 :   rd_cost->rate = INT_MAX;
    3811             : 
    3812           0 :   for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ref_frame++) {
    3813           0 :     if (cpi->ref_frame_flags & flag_list[ref_frame]) {
    3814           0 :       setup_buffer_inter(cpi, x, ref_frame, bsize, mi_row, mi_col,
    3815             :                          frame_mv[NEARESTMV], frame_mv[NEARMV], yv12_mb);
    3816             :     } else {
    3817           0 :       ref_frame_skip_mask[0] |= (1 << ref_frame);
    3818           0 :       ref_frame_skip_mask[1] |= SECOND_REF_FRAME_MASK;
    3819             :     }
    3820           0 :     frame_mv[NEWMV][ref_frame].as_int = INVALID_MV;
    3821           0 :     frame_mv[ZEROMV][ref_frame].as_int = 0;
    3822             :   }
    3823             : 
    3824           0 :   for (ref_index = 0; ref_index < MAX_REFS; ++ref_index) {
    3825           0 :     int mode_excluded = 0;
    3826           0 :     int64_t this_rd = INT64_MAX;
    3827           0 :     int disable_skip = 0;
    3828           0 :     int compmode_cost = 0;
    3829           0 :     int rate2 = 0, rate_y = 0, rate_uv = 0;
    3830           0 :     int64_t distortion2 = 0, distortion_y = 0, distortion_uv = 0;
    3831           0 :     int skippable = 0;
    3832             :     int i;
    3833           0 :     int this_skip2 = 0;
    3834           0 :     int64_t total_sse = INT_MAX;
    3835           0 :     int early_term = 0;
    3836             :     struct buf_2d backup_yv12[2][MAX_MB_PLANE];
    3837             : 
    3838           0 :     ref_frame = vp9_ref_order[ref_index].ref_frame[0];
    3839           0 :     second_ref_frame = vp9_ref_order[ref_index].ref_frame[1];
    3840             : 
    3841             : #if CONFIG_BETTER_HW_COMPATIBILITY
    3842             :     // forbid 8X4 and 4X8 partitions if any reference frame is scaled.
    3843             :     if (bsize == BLOCK_8X4 || bsize == BLOCK_4X8) {
    3844             :       int ref_scaled = vp9_is_scaled(&cm->frame_refs[ref_frame - 1].sf);
    3845             :       if (second_ref_frame > INTRA_FRAME)
    3846             :         ref_scaled += vp9_is_scaled(&cm->frame_refs[second_ref_frame - 1].sf);
    3847             :       if (ref_scaled) continue;
    3848             :     }
    3849             : #endif
    3850             :     // Look at the reference frame of the best mode so far and set the
    3851             :     // skip mask to look at a subset of the remaining modes.
    3852           0 :     if (ref_index > 2 && sf->mode_skip_start < MAX_MODES) {
    3853           0 :       if (ref_index == 3) {
    3854           0 :         switch (best_mbmode.ref_frame[0]) {
    3855           0 :           case INTRA_FRAME: break;
    3856             :           case LAST_FRAME:
    3857           0 :             ref_frame_skip_mask[0] |= (1 << GOLDEN_FRAME) | (1 << ALTREF_FRAME);
    3858           0 :             ref_frame_skip_mask[1] |= SECOND_REF_FRAME_MASK;
    3859           0 :             break;
    3860             :           case GOLDEN_FRAME:
    3861           0 :             ref_frame_skip_mask[0] |= (1 << LAST_FRAME) | (1 << ALTREF_FRAME);
    3862           0 :             ref_frame_skip_mask[1] |= SECOND_REF_FRAME_MASK;
    3863           0 :             break;
    3864             :           case ALTREF_FRAME:
    3865           0 :             ref_frame_skip_mask[0] |= (1 << GOLDEN_FRAME) | (1 << LAST_FRAME);
    3866           0 :             break;
    3867             :           case NONE:
    3868           0 :           case MAX_REF_FRAMES: assert(0 && "Invalid Reference frame"); break;
    3869             :         }
    3870             :       }
    3871             :     }
    3872             : 
    3873           0 :     if ((ref_frame_skip_mask[0] & (1 << ref_frame)) &&
    3874           0 :         (ref_frame_skip_mask[1] & (1 << VPXMAX(0, second_ref_frame))))
    3875           0 :       continue;
    3876             : 
    3877             :     // Test best rd so far against threshold for trying this mode.
    3878           0 :     if (!internal_active_edge &&
    3879           0 :         rd_less_than_thresh(best_rd,
    3880             :                             rd_opt->threshes[segment_id][bsize][ref_index],
    3881             :                             tile_data->thresh_freq_fact[bsize][ref_index]))
    3882           0 :       continue;
    3883             : 
    3884           0 :     comp_pred = second_ref_frame > INTRA_FRAME;
    3885           0 :     if (comp_pred) {
    3886           0 :       if (!cpi->allow_comp_inter_inter) continue;
    3887           0 :       if (!(cpi->ref_frame_flags & flag_list[second_ref_frame])) continue;
    3888             :       // Do not allow compound prediction if the segment level reference frame
    3889             :       // feature is in use as in this case there can only be one reference.
    3890           0 :       if (segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME)) continue;
    3891             : 
    3892           0 :       if ((sf->mode_search_skip_flags & FLAG_SKIP_COMP_BESTINTRA) &&
    3893           0 :           best_mbmode.ref_frame[0] == INTRA_FRAME)
    3894           0 :         continue;
    3895             :     }
    3896             : 
    3897           0 :     if (comp_pred)
    3898           0 :       mode_excluded = cm->reference_mode == SINGLE_REFERENCE;
    3899           0 :     else if (ref_frame != INTRA_FRAME)
    3900           0 :       mode_excluded = cm->reference_mode == COMPOUND_REFERENCE;
    3901             : 
    3902             :     // If the segment reference frame feature is enabled....
    3903             :     // then do nothing if the current ref frame is not allowed..
    3904           0 :     if (segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME) &&
    3905           0 :         get_segdata(seg, segment_id, SEG_LVL_REF_FRAME) != (int)ref_frame) {
    3906           0 :       continue;
    3907             :       // Disable this drop out case if the ref frame
    3908             :       // segment level feature is enabled for this segment. This is to
    3909             :       // prevent the possibility that we end up unable to pick any mode.
    3910           0 :     } else if (!segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME)) {
    3911             :       // Only consider ZEROMV/ALTREF_FRAME for alt ref frame,
    3912             :       // unless ARNR filtering is enabled in which case we want
    3913             :       // an unfiltered alternative. We allow near/nearest as well
    3914             :       // because they may result in zero-zero MVs but be cheaper.
    3915           0 :       if (cpi->rc.is_src_frame_alt_ref && (cpi->oxcf.arnr_max_frames == 0))
    3916           0 :         continue;
    3917             :     }
    3918             : 
    3919           0 :     mi->tx_size = TX_4X4;
    3920           0 :     mi->uv_mode = DC_PRED;
    3921           0 :     mi->ref_frame[0] = ref_frame;
    3922           0 :     mi->ref_frame[1] = second_ref_frame;
    3923             :     // Evaluate all sub-pel filters irrespective of whether we can use
    3924             :     // them for this frame.
    3925           0 :     mi->interp_filter =
    3926           0 :         cm->interp_filter == SWITCHABLE ? EIGHTTAP : cm->interp_filter;
    3927           0 :     x->skip = 0;
    3928           0 :     set_ref_ptrs(cm, xd, ref_frame, second_ref_frame);
    3929             : 
    3930             :     // Select prediction reference frames.
    3931           0 :     for (i = 0; i < MAX_MB_PLANE; i++) {
    3932           0 :       xd->plane[i].pre[0] = yv12_mb[ref_frame][i];
    3933           0 :       if (comp_pred) xd->plane[i].pre[1] = yv12_mb[second_ref_frame][i];
    3934             :     }
    3935             : 
    3936           0 :     if (ref_frame == INTRA_FRAME) {
    3937             :       int rate;
    3938           0 :       if (rd_pick_intra_sub_8x8_y_mode(cpi, x, &rate, &rate_y, &distortion_y,
    3939             :                                        best_rd) >= best_rd)
    3940           0 :         continue;
    3941           0 :       rate2 += rate;
    3942           0 :       rate2 += intra_cost_penalty;
    3943           0 :       distortion2 += distortion_y;
    3944             : 
    3945           0 :       if (rate_uv_intra == INT_MAX) {
    3946           0 :         choose_intra_uv_mode(cpi, x, ctx, bsize, TX_4X4, &rate_uv_intra,
    3947             :                              &rate_uv_tokenonly, &dist_uv, &skip_uv, &mode_uv);
    3948             :       }
    3949           0 :       rate2 += rate_uv_intra;
    3950           0 :       rate_uv = rate_uv_tokenonly;
    3951           0 :       distortion2 += dist_uv;
    3952           0 :       distortion_uv = dist_uv;
    3953           0 :       mi->uv_mode = mode_uv;
    3954             :     } else {
    3955             :       int rate;
    3956             :       int64_t distortion;
    3957             :       int64_t this_rd_thresh;
    3958           0 :       int64_t tmp_rd, tmp_best_rd = INT64_MAX, tmp_best_rdu = INT64_MAX;
    3959           0 :       int tmp_best_rate = INT_MAX, tmp_best_ratey = INT_MAX;
    3960           0 :       int64_t tmp_best_distortion = INT_MAX, tmp_best_sse, uv_sse;
    3961           0 :       int tmp_best_skippable = 0;
    3962             :       int switchable_filter_index;
    3963           0 :       int_mv *second_ref =
    3964           0 :           comp_pred ? &x->mbmi_ext->ref_mvs[second_ref_frame][0] : NULL;
    3965             :       b_mode_info tmp_best_bmodes[16];
    3966             :       MODE_INFO tmp_best_mbmode;
    3967             :       BEST_SEG_INFO bsi[SWITCHABLE_FILTERS];
    3968           0 :       int pred_exists = 0;
    3969             :       int uv_skippable;
    3970             : 
    3971           0 :       YV12_BUFFER_CONFIG *scaled_ref_frame[2] = { NULL, NULL };
    3972             :       int ref;
    3973             : 
    3974           0 :       for (ref = 0; ref < 2; ++ref) {
    3975           0 :         scaled_ref_frame[ref] =
    3976           0 :             mi->ref_frame[ref] > INTRA_FRAME
    3977           0 :                 ? vp9_get_scaled_ref_frame(cpi, mi->ref_frame[ref])
    3978           0 :                 : NULL;
    3979             : 
    3980           0 :         if (scaled_ref_frame[ref]) {
    3981             :           int i;
    3982             :           // Swap out the reference frame for a version that's been scaled to
    3983             :           // match the resolution of the current frame, allowing the existing
    3984             :           // motion search code to be used without additional modifications.
    3985           0 :           for (i = 0; i < MAX_MB_PLANE; i++)
    3986           0 :             backup_yv12[ref][i] = xd->plane[i].pre[ref];
    3987           0 :           vp9_setup_pre_planes(xd, ref, scaled_ref_frame[ref], mi_row, mi_col,
    3988             :                                NULL);
    3989             :         }
    3990             :       }
    3991             : 
    3992           0 :       this_rd_thresh = (ref_frame == LAST_FRAME)
    3993           0 :                            ? rd_opt->threshes[segment_id][bsize][THR_LAST]
    3994           0 :                            : rd_opt->threshes[segment_id][bsize][THR_ALTR];
    3995           0 :       this_rd_thresh = (ref_frame == GOLDEN_FRAME)
    3996           0 :                            ? rd_opt->threshes[segment_id][bsize][THR_GOLD]
    3997           0 :                            : this_rd_thresh;
    3998           0 :       for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i)
    3999           0 :         filter_cache[i] = INT64_MAX;
    4000             : 
    4001           0 :       if (cm->interp_filter != BILINEAR) {
    4002           0 :         tmp_best_filter = EIGHTTAP;
    4003           0 :         if (x->source_variance < sf->disable_filter_search_var_thresh) {
    4004           0 :           tmp_best_filter = EIGHTTAP;
    4005           0 :         } else if (sf->adaptive_pred_interp_filter == 1 &&
    4006           0 :                    ctx->pred_interp_filter < SWITCHABLE) {
    4007           0 :           tmp_best_filter = ctx->pred_interp_filter;
    4008           0 :         } else if (sf->adaptive_pred_interp_filter == 2) {
    4009           0 :           tmp_best_filter = ctx->pred_interp_filter < SWITCHABLE
    4010             :                                 ? ctx->pred_interp_filter
    4011             :                                 : 0;
    4012             :         } else {
    4013           0 :           for (switchable_filter_index = 0;
    4014             :                switchable_filter_index < SWITCHABLE_FILTERS;
    4015           0 :                ++switchable_filter_index) {
    4016             :             int newbest, rs;
    4017             :             int64_t rs_rd;
    4018           0 :             MB_MODE_INFO_EXT *mbmi_ext = x->mbmi_ext;
    4019           0 :             mi->interp_filter = switchable_filter_index;
    4020           0 :             tmp_rd = rd_pick_best_sub8x8_mode(
    4021           0 :                 cpi, x, &mbmi_ext->ref_mvs[ref_frame][0], second_ref, best_yrd,
    4022             :                 &rate, &rate_y, &distortion, &skippable, &total_sse,
    4023             :                 (int)this_rd_thresh, seg_mvs, bsi, switchable_filter_index,
    4024             :                 mi_row, mi_col);
    4025             : 
    4026           0 :             if (tmp_rd == INT64_MAX) continue;
    4027           0 :             rs = vp9_get_switchable_rate(cpi, xd);
    4028           0 :             rs_rd = RDCOST(x->rdmult, x->rddiv, rs, 0);
    4029           0 :             filter_cache[switchable_filter_index] = tmp_rd;
    4030           0 :             filter_cache[SWITCHABLE_FILTERS] =
    4031           0 :                 VPXMIN(filter_cache[SWITCHABLE_FILTERS], tmp_rd + rs_rd);
    4032           0 :             if (cm->interp_filter == SWITCHABLE) tmp_rd += rs_rd;
    4033             : 
    4034           0 :             mask_filter = VPXMAX(mask_filter, tmp_rd);
    4035             : 
    4036           0 :             newbest = (tmp_rd < tmp_best_rd);
    4037           0 :             if (newbest) {
    4038           0 :               tmp_best_filter = mi->interp_filter;
    4039           0 :               tmp_best_rd = tmp_rd;
    4040             :             }
    4041           0 :             if ((newbest && cm->interp_filter == SWITCHABLE) ||
    4042           0 :                 (mi->interp_filter == cm->interp_filter &&
    4043           0 :                  cm->interp_filter != SWITCHABLE)) {
    4044           0 :               tmp_best_rdu = tmp_rd;
    4045           0 :               tmp_best_rate = rate;
    4046           0 :               tmp_best_ratey = rate_y;
    4047           0 :               tmp_best_distortion = distortion;
    4048           0 :               tmp_best_sse = total_sse;
    4049           0 :               tmp_best_skippable = skippable;
    4050           0 :               tmp_best_mbmode = *mi;
    4051           0 :               for (i = 0; i < 4; i++) {
    4052           0 :                 tmp_best_bmodes[i] = xd->mi[0]->bmi[i];
    4053           0 :                 x->zcoeff_blk[TX_4X4][i] = !x->plane[0].eobs[i];
    4054             :               }
    4055           0 :               pred_exists = 1;
    4056           0 :               if (switchable_filter_index == 0 && sf->use_rd_breakout &&
    4057             :                   best_rd < INT64_MAX) {
    4058           0 :                 if (tmp_best_rdu / 2 > best_rd) {
    4059             :                   // skip searching the other filters if the first is
    4060             :                   // already substantially larger than the best so far
    4061           0 :                   tmp_best_filter = mi->interp_filter;
    4062           0 :                   tmp_best_rdu = INT64_MAX;
    4063           0 :                   break;
    4064             :                 }
    4065             :               }
    4066             :             }
    4067             :           }  // switchable_filter_index loop
    4068             :         }
    4069             :       }
    4070             : 
    4071           0 :       if (tmp_best_rdu == INT64_MAX && pred_exists) continue;
    4072             : 
    4073           0 :       mi->interp_filter = (cm->interp_filter == SWITCHABLE ? tmp_best_filter
    4074             :                                                            : cm->interp_filter);
    4075           0 :       if (!pred_exists) {
    4076             :         // Handles the special case when a filter that is not in the
    4077             :         // switchable list (bilinear, 6-tap) is indicated at the frame level
    4078           0 :         tmp_rd = rd_pick_best_sub8x8_mode(
    4079           0 :             cpi, x, &x->mbmi_ext->ref_mvs[ref_frame][0], second_ref, best_yrd,
    4080             :             &rate, &rate_y, &distortion, &skippable, &total_sse,
    4081             :             (int)this_rd_thresh, seg_mvs, bsi, 0, mi_row, mi_col);
    4082           0 :         if (tmp_rd == INT64_MAX) continue;
    4083             :       } else {
    4084           0 :         total_sse = tmp_best_sse;
    4085           0 :         rate = tmp_best_rate;
    4086           0 :         rate_y = tmp_best_ratey;
    4087           0 :         distortion = tmp_best_distortion;
    4088           0 :         skippable = tmp_best_skippable;
    4089           0 :         *mi = tmp_best_mbmode;
    4090           0 :         for (i = 0; i < 4; i++) xd->mi[0]->bmi[i] = tmp_best_bmodes[i];
    4091             :       }
    4092             : 
    4093           0 :       rate2 += rate;
    4094           0 :       distortion2 += distortion;
    4095             : 
    4096           0 :       if (cm->interp_filter == SWITCHABLE)
    4097           0 :         rate2 += vp9_get_switchable_rate(cpi, xd);
    4098             : 
    4099           0 :       if (!mode_excluded)
    4100           0 :         mode_excluded = comp_pred ? cm->reference_mode == SINGLE_REFERENCE
    4101           0 :                                   : cm->reference_mode == COMPOUND_REFERENCE;
    4102             : 
    4103           0 :       compmode_cost = vp9_cost_bit(comp_mode_p, comp_pred);
    4104             : 
    4105           0 :       tmp_best_rdu =
    4106           0 :           best_rd - VPXMIN(RDCOST(x->rdmult, x->rddiv, rate2, distortion2),
    4107             :                            RDCOST(x->rdmult, x->rddiv, 0, total_sse));
    4108             : 
    4109           0 :       if (tmp_best_rdu > 0) {
    4110             :         // If even the 'Y' rd value of split is higher than best so far
    4111             :         // then dont bother looking at UV
    4112           0 :         vp9_build_inter_predictors_sbuv(&x->e_mbd, mi_row, mi_col, BLOCK_8X8);
    4113           0 :         memset(x->skip_txfm, SKIP_TXFM_NONE, sizeof(x->skip_txfm));
    4114           0 :         if (!super_block_uvrd(cpi, x, &rate_uv, &distortion_uv, &uv_skippable,
    4115             :                               &uv_sse, BLOCK_8X8, tmp_best_rdu)) {
    4116           0 :           for (ref = 0; ref < 2; ++ref) {
    4117           0 :             if (scaled_ref_frame[ref]) {
    4118             :               int i;
    4119           0 :               for (i = 0; i < MAX_MB_PLANE; ++i)
    4120           0 :                 xd->plane[i].pre[ref] = backup_yv12[ref][i];
    4121             :             }
    4122             :           }
    4123           0 :           continue;
    4124             :         }
    4125             : 
    4126           0 :         rate2 += rate_uv;
    4127           0 :         distortion2 += distortion_uv;
    4128           0 :         skippable = skippable && uv_skippable;
    4129           0 :         total_sse += uv_sse;
    4130             :       }
    4131             : 
    4132           0 :       for (ref = 0; ref < 2; ++ref) {
    4133           0 :         if (scaled_ref_frame[ref]) {
    4134             :           // Restore the prediction frame pointers to their unscaled versions.
    4135             :           int i;
    4136           0 :           for (i = 0; i < MAX_MB_PLANE; ++i)
    4137           0 :             xd->plane[i].pre[ref] = backup_yv12[ref][i];
    4138             :         }
    4139             :       }
    4140             :     }
    4141             : 
    4142           0 :     if (cm->reference_mode == REFERENCE_MODE_SELECT) rate2 += compmode_cost;
    4143             : 
    4144             :     // Estimate the reference frame signaling cost and add it
    4145             :     // to the rolling cost variable.
    4146           0 :     if (second_ref_frame > INTRA_FRAME) {
    4147           0 :       rate2 += ref_costs_comp[ref_frame];
    4148             :     } else {
    4149           0 :       rate2 += ref_costs_single[ref_frame];
    4150             :     }
    4151             : 
    4152           0 :     if (!disable_skip) {
    4153           0 :       const vpx_prob skip_prob = vp9_get_skip_prob(cm, xd);
    4154           0 :       const int skip_cost0 = vp9_cost_bit(skip_prob, 0);
    4155           0 :       const int skip_cost1 = vp9_cost_bit(skip_prob, 1);
    4156             : 
    4157             :       // Skip is never coded at the segment level for sub8x8 blocks and instead
    4158             :       // always coded in the bitstream at the mode info level.
    4159           0 :       if (ref_frame != INTRA_FRAME && !xd->lossless) {
    4160           0 :         if (RDCOST(x->rdmult, x->rddiv, rate_y + rate_uv + skip_cost0,
    4161             :                    distortion2) <
    4162           0 :             RDCOST(x->rdmult, x->rddiv, skip_cost1, total_sse)) {
    4163             :           // Add in the cost of the no skip flag.
    4164           0 :           rate2 += skip_cost0;
    4165             :         } else {
    4166             :           // FIXME(rbultje) make this work for splitmv also
    4167           0 :           rate2 += skip_cost1;
    4168           0 :           distortion2 = total_sse;
    4169           0 :           assert(total_sse >= 0);
    4170           0 :           rate2 -= (rate_y + rate_uv);
    4171           0 :           rate_y = 0;
    4172           0 :           rate_uv = 0;
    4173           0 :           this_skip2 = 1;
    4174             :         }
    4175             :       } else {
    4176             :         // Add in the cost of the no skip flag.
    4177           0 :         rate2 += skip_cost0;
    4178             :       }
    4179             : 
    4180             :       // Calculate the final RD estimate for this mode.
    4181           0 :       this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
    4182             :     }
    4183             : 
    4184           0 :     if (!disable_skip && ref_frame == INTRA_FRAME) {
    4185           0 :       for (i = 0; i < REFERENCE_MODES; ++i)
    4186           0 :         best_pred_rd[i] = VPXMIN(best_pred_rd[i], this_rd);
    4187           0 :       for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++)
    4188           0 :         best_filter_rd[i] = VPXMIN(best_filter_rd[i], this_rd);
    4189             :     }
    4190             : 
    4191             :     // Did this mode help.. i.e. is it the new best mode
    4192           0 :     if (this_rd < best_rd || x->skip) {
    4193           0 :       if (!mode_excluded) {
    4194           0 :         int max_plane = MAX_MB_PLANE;
    4195             :         // Note index of best mode so far
    4196           0 :         best_ref_index = ref_index;
    4197             : 
    4198           0 :         if (ref_frame == INTRA_FRAME) {
    4199             :           /* required for left and above block mv */
    4200           0 :           mi->mv[0].as_int = 0;
    4201           0 :           max_plane = 1;
    4202             :           // Initialize interp_filter here so we do not have to check for
    4203             :           // inter block modes in get_pred_context_switchable_interp()
    4204           0 :           mi->interp_filter = SWITCHABLE_FILTERS;
    4205             :         }
    4206             : 
    4207           0 :         rd_cost->rate = rate2;
    4208           0 :         rd_cost->dist = distortion2;
    4209           0 :         rd_cost->rdcost = this_rd;
    4210           0 :         best_rd = this_rd;
    4211           0 :         best_yrd =
    4212           0 :             best_rd - RDCOST(x->rdmult, x->rddiv, rate_uv, distortion_uv);
    4213           0 :         best_mbmode = *mi;
    4214           0 :         best_skip2 = this_skip2;
    4215           0 :         if (!x->select_tx_size) swap_block_ptr(x, ctx, 1, 0, 0, max_plane);
    4216           0 :         memcpy(ctx->zcoeff_blk, x->zcoeff_blk[TX_4X4],
    4217           0 :                sizeof(ctx->zcoeff_blk[0]) * ctx->num_4x4_blk);
    4218             : 
    4219           0 :         for (i = 0; i < 4; i++) best_bmodes[i] = xd->mi[0]->bmi[i];
    4220             : 
    4221             :         // TODO(debargha): enhance this test with a better distortion prediction
    4222             :         // based on qp, activity mask and history
    4223           0 :         if ((sf->mode_search_skip_flags & FLAG_EARLY_TERMINATE) &&
    4224             :             (ref_index > MIN_EARLY_TERM_INDEX)) {
    4225           0 :           int qstep = xd->plane[0].dequant[1];
    4226             :           // TODO(debargha): Enhance this by specializing for each mode_index
    4227           0 :           int scale = 4;
    4228             : #if CONFIG_VP9_HIGHBITDEPTH
    4229             :           if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    4230             :             qstep >>= (xd->bd - 8);
    4231             :           }
    4232             : #endif  // CONFIG_VP9_HIGHBITDEPTH
    4233           0 :           if (x->source_variance < UINT_MAX) {
    4234           0 :             const int var_adjust = (x->source_variance < 16);
    4235           0 :             scale -= var_adjust;
    4236             :           }
    4237           0 :           if (ref_frame > INTRA_FRAME && distortion2 * scale < qstep * qstep) {
    4238           0 :             early_term = 1;
    4239             :           }
    4240             :         }
    4241             :       }
    4242             :     }
    4243             : 
    4244             :     /* keep record of best compound/single-only prediction */
    4245           0 :     if (!disable_skip && ref_frame != INTRA_FRAME) {
    4246             :       int64_t single_rd, hybrid_rd, single_rate, hybrid_rate;
    4247             : 
    4248           0 :       if (cm->reference_mode == REFERENCE_MODE_SELECT) {
    4249           0 :         single_rate = rate2 - compmode_cost;
    4250           0 :         hybrid_rate = rate2;
    4251             :       } else {
    4252           0 :         single_rate = rate2;
    4253           0 :         hybrid_rate = rate2 + compmode_cost;
    4254             :       }
    4255             : 
    4256           0 :       single_rd = RDCOST(x->rdmult, x->rddiv, single_rate, distortion2);
    4257           0 :       hybrid_rd = RDCOST(x->rdmult, x->rddiv, hybrid_rate, distortion2);
    4258             : 
    4259           0 :       if (!comp_pred && single_rd < best_pred_rd[SINGLE_REFERENCE])
    4260           0 :         best_pred_rd[SINGLE_REFERENCE] = single_rd;
    4261           0 :       else if (comp_pred && single_rd < best_pred_rd[COMPOUND_REFERENCE])
    4262           0 :         best_pred_rd[COMPOUND_REFERENCE] = single_rd;
    4263             : 
    4264           0 :       if (hybrid_rd < best_pred_rd[REFERENCE_MODE_SELECT])
    4265           0 :         best_pred_rd[REFERENCE_MODE_SELECT] = hybrid_rd;
    4266             :     }
    4267             : 
    4268             :     /* keep record of best filter type */
    4269           0 :     if (!mode_excluded && !disable_skip && ref_frame != INTRA_FRAME &&
    4270           0 :         cm->interp_filter != BILINEAR) {
    4271           0 :       int64_t ref =
    4272           0 :           filter_cache[cm->interp_filter == SWITCHABLE ? SWITCHABLE_FILTERS
    4273           0 :                                                        : cm->interp_filter];
    4274             :       int64_t adj_rd;
    4275           0 :       for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++) {
    4276           0 :         if (ref == INT64_MAX)
    4277           0 :           adj_rd = 0;
    4278           0 :         else if (filter_cache[i] == INT64_MAX)
    4279             :           // when early termination is triggered, the encoder does not have
    4280             :           // access to the rate-distortion cost. it only knows that the cost
    4281             :           // should be above the maximum valid value. hence it takes the known
    4282             :           // maximum plus an arbitrary constant as the rate-distortion cost.
    4283           0 :           adj_rd = mask_filter - ref + 10;
    4284             :         else
    4285           0 :           adj_rd = filter_cache[i] - ref;
    4286             : 
    4287           0 :         adj_rd += this_rd;
    4288           0 :         best_filter_rd[i] = VPXMIN(best_filter_rd[i], adj_rd);
    4289             :       }
    4290             :     }
    4291             : 
    4292           0 :     if (early_term) break;
    4293             : 
    4294           0 :     if (x->skip && !comp_pred) break;
    4295             :   }
    4296             : 
    4297           0 :   if (best_rd >= best_rd_so_far) {
    4298           0 :     rd_cost->rate = INT_MAX;
    4299           0 :     rd_cost->rdcost = INT64_MAX;
    4300           0 :     return;
    4301             :   }
    4302             : 
    4303             :   // If we used an estimate for the uv intra rd in the loop above...
    4304           0 :   if (sf->use_uv_intra_rd_estimate) {
    4305             :     // Do Intra UV best rd mode selection if best mode choice above was intra.
    4306           0 :     if (best_mbmode.ref_frame[0] == INTRA_FRAME) {
    4307           0 :       *mi = best_mbmode;
    4308           0 :       rd_pick_intra_sbuv_mode(cpi, x, ctx, &rate_uv_intra, &rate_uv_tokenonly,
    4309             :                               &dist_uv, &skip_uv, BLOCK_8X8, TX_4X4);
    4310             :     }
    4311             :   }
    4312             : 
    4313           0 :   if (best_rd == INT64_MAX) {
    4314           0 :     rd_cost->rate = INT_MAX;
    4315           0 :     rd_cost->dist = INT64_MAX;
    4316           0 :     rd_cost->rdcost = INT64_MAX;
    4317           0 :     return;
    4318             :   }
    4319             : 
    4320           0 :   assert((cm->interp_filter == SWITCHABLE) ||
    4321             :          (cm->interp_filter == best_mbmode.interp_filter) ||
    4322             :          !is_inter_block(&best_mbmode));
    4323             : 
    4324           0 :   vp9_update_rd_thresh_fact(tile_data->thresh_freq_fact, sf->adaptive_rd_thresh,
    4325             :                             bsize, best_ref_index);
    4326             : 
    4327             :   // macroblock modes
    4328           0 :   *mi = best_mbmode;
    4329           0 :   x->skip |= best_skip2;
    4330           0 :   if (!is_inter_block(&best_mbmode)) {
    4331           0 :     for (i = 0; i < 4; i++) xd->mi[0]->bmi[i].as_mode = best_bmodes[i].as_mode;
    4332             :   } else {
    4333           0 :     for (i = 0; i < 4; ++i)
    4334           0 :       memcpy(&xd->mi[0]->bmi[i], &best_bmodes[i], sizeof(b_mode_info));
    4335             : 
    4336           0 :     mi->mv[0].as_int = xd->mi[0]->bmi[3].as_mv[0].as_int;
    4337           0 :     mi->mv[1].as_int = xd->mi[0]->bmi[3].as_mv[1].as_int;
    4338             :   }
    4339             : 
    4340           0 :   for (i = 0; i < REFERENCE_MODES; ++i) {
    4341           0 :     if (best_pred_rd[i] == INT64_MAX)
    4342           0 :       best_pred_diff[i] = INT_MIN;
    4343             :     else
    4344           0 :       best_pred_diff[i] = best_rd - best_pred_rd[i];
    4345             :   }
    4346             : 
    4347           0 :   if (!x->skip) {
    4348           0 :     for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++) {
    4349           0 :       if (best_filter_rd[i] == INT64_MAX)
    4350           0 :         best_filter_diff[i] = 0;
    4351             :       else
    4352           0 :         best_filter_diff[i] = best_rd - best_filter_rd[i];
    4353             :     }
    4354           0 :     if (cm->interp_filter == SWITCHABLE)
    4355           0 :       assert(best_filter_diff[SWITCHABLE_FILTERS] == 0);
    4356             :   } else {
    4357           0 :     vp9_zero(best_filter_diff);
    4358             :   }
    4359             : 
    4360           0 :   store_coding_context(x, ctx, best_ref_index, best_pred_diff, best_filter_diff,
    4361             :                        0);
    4362             : }

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