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 "segmentation.h"
      12             : #include "vpx_mem/vpx_mem.h"
      13             : 
      14           0 : void vp8_update_gf_useage_maps(VP8_COMP *cpi, VP8_COMMON *cm, MACROBLOCK *x) {
      15             :   int mb_row, mb_col;
      16             : 
      17           0 :   MODE_INFO *this_mb_mode_info = cm->mi;
      18             : 
      19           0 :   x->gf_active_ptr = (signed char *)cpi->gf_active_flags;
      20             : 
      21           0 :   if ((cm->frame_type == KEY_FRAME) || (cm->refresh_golden_frame)) {
      22             :     /* Reset Gf useage monitors */
      23           0 :     memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols));
      24           0 :     cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
      25             :   } else {
      26             :     /* for each macroblock row in image */
      27           0 :     for (mb_row = 0; mb_row < cm->mb_rows; ++mb_row) {
      28             :       /* for each macroblock col in image */
      29           0 :       for (mb_col = 0; mb_col < cm->mb_cols; ++mb_col) {
      30             :         /* If using golden then set GF active flag if not already set.
      31             :          * If using last frame 0,0 mode then leave flag as it is
      32             :          * else if using non 0,0 motion or intra modes then clear
      33             :          * flag if it is currently set
      34             :          */
      35           0 :         if ((this_mb_mode_info->mbmi.ref_frame == GOLDEN_FRAME) ||
      36           0 :             (this_mb_mode_info->mbmi.ref_frame == ALTREF_FRAME)) {
      37           0 :           if (*(x->gf_active_ptr) == 0) {
      38           0 :             *(x->gf_active_ptr) = 1;
      39           0 :             cpi->gf_active_count++;
      40             :           }
      41           0 :         } else if ((this_mb_mode_info->mbmi.mode != ZEROMV) &&
      42           0 :                    *(x->gf_active_ptr)) {
      43           0 :           *(x->gf_active_ptr) = 0;
      44           0 :           cpi->gf_active_count--;
      45             :         }
      46             : 
      47           0 :         x->gf_active_ptr++;  /* Step onto next entry */
      48           0 :         this_mb_mode_info++; /* skip to next mb */
      49             :       }
      50             : 
      51             :       /* this is to account for the border */
      52           0 :       this_mb_mode_info++;
      53             :     }
      54             :   }
      55           0 : }