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_ptr,ptrdiff_t diff_stride,const uint8_t * src_ptr,ptrdiff_t src_stride,const uint8_t * pred_ptr,ptrdiff_t pred_stride)19 void vpx_subtract_block_c(int rows, int cols, int16_t *diff_ptr,
20 ptrdiff_t diff_stride, const uint8_t *src_ptr,
21 ptrdiff_t src_stride, const uint8_t *pred_ptr,
22 ptrdiff_t pred_stride) {
23 int r, c;
24
25 for (r = 0; r < rows; r++) {
26 for (c = 0; c < cols; c++) diff_ptr[c] = src_ptr[c] - pred_ptr[c];
27
28 diff_ptr += diff_stride;
29 pred_ptr += pred_stride;
30 src_ptr += src_stride;
31 }
32 }
33
34 #if CONFIG_VP9_HIGHBITDEPTH
vpx_highbd_subtract_block_c(int rows,int cols,int16_t * diff_ptr,ptrdiff_t diff_stride,const uint8_t * src8_ptr,ptrdiff_t src_stride,const uint8_t * pred8_ptr,ptrdiff_t pred_stride,int bd)35 void vpx_highbd_subtract_block_c(int rows, int cols, int16_t *diff_ptr,
36 ptrdiff_t diff_stride, const uint8_t *src8_ptr,
37 ptrdiff_t src_stride, const uint8_t *pred8_ptr,
38 ptrdiff_t pred_stride, int bd) {
39 int r, c;
40 uint16_t *src = CONVERT_TO_SHORTPTR(src8_ptr);
41 uint16_t *pred = CONVERT_TO_SHORTPTR(pred8_ptr);
42 (void)bd;
43
44 for (r = 0; r < rows; r++) {
45 for (c = 0; c < cols; c++) {
46 diff_ptr[c] = src[c] - pred[c];
47 }
48
49 diff_ptr += diff_stride;
50 pred += pred_stride;
51 src += src_stride;
52 }
53 }
54 #endif // CONFIG_VP9_HIGHBITDEPTH
55