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 "vpx_config.h"
      12             : #include "vp8_rtcd.h"
      13             : #include "vpx_mem/vpx_mem.h"
      14             : 
      15             : void vp8_dequant_idct_add_c(short *input, short *dq, unsigned char *dest,
      16             :                             int stride);
      17             : void vp8_dc_only_idct_add_c(short input_dc, unsigned char *pred,
      18             :                             int pred_stride, unsigned char *dst_ptr,
      19             :                             int dst_stride);
      20             : 
      21           0 : void vp8_dequant_idct_add_y_block_c(short *q, short *dq, unsigned char *dst,
      22             :                                     int stride, char *eobs) {
      23             :   int i, j;
      24             : 
      25           0 :   for (i = 0; i < 4; ++i) {
      26           0 :     for (j = 0; j < 4; ++j) {
      27           0 :       if (*eobs++ > 1) {
      28           0 :         vp8_dequant_idct_add_c(q, dq, dst, stride);
      29             :       } else {
      30           0 :         vp8_dc_only_idct_add_c(q[0] * dq[0], dst, stride, dst, stride);
      31           0 :         memset(q, 0, 2 * sizeof(q[0]));
      32             :       }
      33             : 
      34           0 :       q += 16;
      35           0 :       dst += 4;
      36             :     }
      37             : 
      38           0 :     dst += 4 * stride - 16;
      39             :   }
      40           0 : }
      41             : 
      42           0 : void vp8_dequant_idct_add_uv_block_c(short *q, short *dq, unsigned char *dstu,
      43             :                                      unsigned char *dstv, int stride,
      44             :                                      char *eobs) {
      45             :   int i, j;
      46             : 
      47           0 :   for (i = 0; i < 2; ++i) {
      48           0 :     for (j = 0; j < 2; ++j) {
      49           0 :       if (*eobs++ > 1) {
      50           0 :         vp8_dequant_idct_add_c(q, dq, dstu, stride);
      51             :       } else {
      52           0 :         vp8_dc_only_idct_add_c(q[0] * dq[0], dstu, stride, dstu, stride);
      53           0 :         memset(q, 0, 2 * sizeof(q[0]));
      54             :       }
      55             : 
      56           0 :       q += 16;
      57           0 :       dstu += 4;
      58             :     }
      59             : 
      60           0 :     dstu += 4 * stride - 8;
      61             :   }
      62             : 
      63           0 :   for (i = 0; i < 2; ++i) {
      64           0 :     for (j = 0; j < 2; ++j) {
      65           0 :       if (*eobs++ > 1) {
      66           0 :         vp8_dequant_idct_add_c(q, dq, dstv, stride);
      67             :       } else {
      68           0 :         vp8_dc_only_idct_add_c(q[0] * dq[0], dstv, stride, dstv, stride);
      69           0 :         memset(q, 0, 2 * sizeof(q[0]));
      70             :       }
      71             : 
      72           0 :       q += 16;
      73           0 :       dstv += 4;
      74             :     }
      75             : 
      76           0 :     dstv += 4 * stride - 8;
      77             :   }
      78           0 : }