1 /*
2 * Copyright (c) 2015 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 <stdlib.h>
12
13 #include "./vpx_config.h"
14 #include "./vpx_dsp_rtcd.h"
15
16 #include "vpx/vpx_integer.h"
17 #include "vpx_ports/mem.h"
18
vpx_subtract_block_c(int rows,int cols,int16_t * diff,ptrdiff_t diff_stride,const uint8_t * src,ptrdiff_t src_stride,const uint8_t * pred,ptrdiff_t pred_stride)19 void vpx_subtract_block_c(int rows, int cols,
20 int16_t *diff, ptrdiff_t diff_stride,
21 const uint8_t *src, ptrdiff_t src_stride,
22 const uint8_t *pred, ptrdiff_t pred_stride) {
23 int r, c;
24
25 for (r = 0; r < rows; r++) {
26 for (c = 0; c < cols; c++)
27 diff[c] = src[c] - pred[c];
28
29 diff += diff_stride;
30 pred += pred_stride;
31 src += src_stride;
32 }
33 }
34
35 #if CONFIG_VP9_HIGHBITDEPTH
vpx_highbd_subtract_block_c(int rows,int cols,int16_t * diff,ptrdiff_t diff_stride,const uint8_t * src8,ptrdiff_t src_stride,const uint8_t * pred8,ptrdiff_t pred_stride,int bd)36 void vpx_highbd_subtract_block_c(int rows, int cols,
37 int16_t *diff, ptrdiff_t diff_stride,
38 const uint8_t *src8, ptrdiff_t src_stride,
39 const uint8_t *pred8, ptrdiff_t pred_stride,
40 int bd) {
41 int r, c;
42 uint16_t *src = CONVERT_TO_SHORTPTR(src8);
43 uint16_t *pred = CONVERT_TO_SHORTPTR(pred8);
44 (void) bd;
45
46 for (r = 0; r < rows; r++) {
47 for (c = 0; c < cols; c++) {
48 diff[c] = src[c] - pred[c];
49 }
50
51 diff += diff_stride;
52 pred += pred_stride;
53 src += src_stride;
54 }
55 }
56 #endif // CONFIG_VP9_HIGHBITDEPTH
57