2 * Copyright (c) 2016 The WebM project authors. All Rights Reserved.
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.
12 #include "./vpx_dsp_rtcd.h"
13 #include "vpx/vpx_integer.h"
15 const int16_t vpx_rv[] = {
16 8, 5, 2, 2, 8, 12, 4, 9, 8, 3, 0, 3, 9, 0, 0, 0, 8, 3, 14,
17 4, 10, 1, 11, 14, 1, 14, 9, 6, 12, 11, 8, 6, 10, 0, 0, 8, 9, 0,
18 3, 14, 8, 11, 13, 4, 2, 9, 0, 3, 9, 6, 1, 2, 3, 14, 13, 1, 8,
19 2, 9, 7, 3, 3, 1, 13, 13, 6, 6, 5, 2, 7, 11, 9, 11, 8, 7, 3,
20 2, 0, 13, 13, 14, 4, 12, 5, 12, 10, 8, 10, 13, 10, 4, 14, 4, 10, 0,
21 8, 11, 1, 13, 7, 7, 14, 6, 14, 13, 2, 13, 5, 4, 4, 0, 10, 0, 5,
22 13, 2, 12, 7, 11, 13, 8, 0, 4, 10, 7, 2, 7, 2, 2, 5, 3, 4, 7,
23 3, 3, 14, 14, 5, 9, 13, 3, 14, 3, 6, 3, 0, 11, 8, 13, 1, 13, 1,
24 12, 0, 10, 9, 7, 6, 2, 8, 5, 2, 13, 7, 1, 13, 14, 7, 6, 7, 9,
25 6, 10, 11, 7, 8, 7, 5, 14, 8, 4, 4, 0, 8, 7, 10, 0, 8, 14, 11,
26 3, 12, 5, 7, 14, 3, 14, 5, 2, 6, 11, 12, 12, 8, 0, 11, 13, 1, 2,
27 0, 5, 10, 14, 7, 8, 0, 4, 11, 0, 8, 0, 3, 10, 5, 8, 0, 11, 6,
28 7, 8, 10, 7, 13, 9, 2, 5, 1, 5, 10, 2, 4, 3, 5, 6, 10, 8, 9,
29 4, 11, 14, 0, 10, 0, 5, 13, 2, 12, 7, 11, 13, 8, 0, 4, 10, 7, 2,
30 7, 2, 2, 5, 3, 4, 7, 3, 3, 14, 14, 5, 9, 13, 3, 14, 3, 6, 3,
31 0, 11, 8, 13, 1, 13, 1, 12, 0, 10, 9, 7, 6, 2, 8, 5, 2, 13, 7,
32 1, 13, 14, 7, 6, 7, 9, 6, 10, 11, 7, 8, 7, 5, 14, 8, 4, 4, 0,
33 8, 7, 10, 0, 8, 14, 11, 3, 12, 5, 7, 14, 3, 14, 5, 2, 6, 11, 12,
34 12, 8, 0, 11, 13, 1, 2, 0, 5, 10, 14, 7, 8, 0, 4, 11, 0, 8, 0,
35 3, 10, 5, 8, 0, 11, 6, 7, 8, 10, 7, 13, 9, 2, 5, 1, 5, 10, 2,
36 4, 3, 5, 6, 10, 8, 9, 4, 11, 14, 3, 8, 3, 7, 8, 5, 11, 4, 12,
37 3, 11, 9, 14, 8, 14, 13, 4, 3, 1, 2, 14, 6, 5, 4, 4, 11, 4, 6,
38 2, 1, 5, 8, 8, 12, 13, 5, 14, 10, 12, 13, 0, 9, 5, 5, 11, 10, 13,
42 void vpx_post_proc_down_and_across_mb_row_c(unsigned char *src_ptr,
43 unsigned char *dst_ptr,
44 int src_pixels_per_line,
45 int dst_pixels_per_line, int cols,
46 unsigned char *f, int size) {
47 unsigned char *p_src, *p_dst;
56 for (row = 0; row < size; row++) {
57 /* post_proc_down for one row */
61 for (col = 0; col < cols; col++) {
62 unsigned char p_above2 = p_src[col - 2 * src_pixels_per_line];
63 unsigned char p_above1 = p_src[col - src_pixels_per_line];
64 unsigned char p_below1 = p_src[col + src_pixels_per_line];
65 unsigned char p_below2 = p_src[col + 2 * src_pixels_per_line];
69 if ((abs(v - p_above2) < f[col]) && (abs(v - p_above1) < f[col]) &&
70 (abs(v - p_below1) < f[col]) && (abs(v - p_below2) < f[col])) {
71 unsigned char k1, k2, k3;
72 k1 = (p_above2 + p_above1 + 1) >> 1;
73 k2 = (p_below2 + p_below1 + 1) >> 1;
74 k3 = (k1 + k2 + 1) >> 1;
75 v = (k3 + v + 1) >> 1;
81 /* now post_proc_across */
85 p_src[-2] = p_src[-1] = p_src[0];
86 p_src[cols] = p_src[cols + 1] = p_src[cols - 1];
88 for (col = 0; col < cols; col++) {
91 if ((abs(v - p_src[col - 2]) < f[col]) &&
92 (abs(v - p_src[col - 1]) < f[col]) &&
93 (abs(v - p_src[col + 1]) < f[col]) &&
94 (abs(v - p_src[col + 2]) < f[col])) {
95 unsigned char k1, k2, k3;
96 k1 = (p_src[col - 2] + p_src[col - 1] + 1) >> 1;
97 k2 = (p_src[col + 2] + p_src[col + 1] + 1) >> 1;
98 k3 = (k1 + k2 + 1) >> 1;
99 v = (k3 + v + 1) >> 1;
104 if (col >= 2) p_dst[col - 2] = d[(col - 2) & 3];
107 /* handle the last two pixels */
108 p_dst[col - 2] = d[(col - 2) & 3];
109 p_dst[col - 1] = d[(col - 1) & 3];
112 src_ptr += src_pixels_per_line;
113 dst_ptr += dst_pixels_per_line;
117 void vpx_mbpost_proc_across_ip_c(unsigned char *src, int pitch, int rows,
118 int cols, int flimit) {
121 unsigned char *s = src;
124 for (r = 0; r < rows; r++) {
128 for (i = -8; i < 0; i++) s[i] = s[0];
130 /* 17 avoids valgrind warning - we buffer values in c in d
131 * and only write them when we've read 8 ahead...
133 for (i = 0; i < 17; i++) s[i + cols] = s[cols - 1];
135 for (i = -8; i <= 6; i++) {
136 sumsq += s[i] * s[i];
141 for (c = 0; c < cols + 8; c++) {
142 int x = s[c + 7] - s[c - 8];
143 int y = s[c + 7] + s[c - 8];
150 if (sumsq * 15 - sum * sum < flimit) {
151 d[c & 15] = (8 + sum + s[c]) >> 4;
154 s[c - 8] = d[(c - 8) & 15];
161 void vpx_mbpost_proc_down_c(unsigned char *dst, int pitch, int rows, int cols,
165 for (c = 0; c < cols; c++) {
166 unsigned char *s = &dst[c];
171 for (i = -8; i < 0; i++) s[i * pitch] = s[0];
173 /* 17 avoids valgrind warning - we buffer values in c in d
174 * and only write them when we've read 8 ahead...
176 for (i = 0; i < 17; i++) s[(i + rows) * pitch] = s[(rows - 1) * pitch];
178 for (i = -8; i <= 6; i++) {
179 sumsq += s[i * pitch] * s[i * pitch];
183 for (r = 0; r < rows + 8; r++) {
184 sumsq += s[7 * pitch] * s[7 * pitch] - s[-8 * pitch] * s[-8 * pitch];
185 sum += s[7 * pitch] - s[-8 * pitch];
188 if (sumsq * 15 - sum * sum < flimit) {
189 d[r & 15] = (vpx_rv[(r & 127) + (c & 7)] + sum + s[0]) >> 4;
191 if (r >= 8) s[-8 * pitch] = d[(r - 8) & 15];