FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/h26x/h2656_sao_template.c
Date: 2026-09-28 23:39:34
Exec Total Coverage
Lines: 122 122 100.0%
Functions: 11 16 68.8%
Branches: 122 122 100.0%
Line Branch Exec Source
1 /*
2 * HEVC/VVC SAO template
3 *
4 * Copyright (C) 2024 Nuo Mi
5 * Copyright (C) 2012 - 2013 Guillaume Martres
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 218918 static void FUNC(sao_band_filter)(uint8_t *_dst, const uint8_t *_src,
25 ptrdiff_t stride_dst, ptrdiff_t stride_src,
26 const int16_t *sao_offset_val, int sao_left_class,
27 int width, int height)
28 {
29 218918 pixel *dst = (pixel *)_dst;
30 218918 const pixel *src = (const pixel *)_src;
31 218918 int offset_table[32] = { 0 };
32 int k, y, x;
33 218918 int shift = BIT_DEPTH - 5;
34
35 218918 stride_dst /= sizeof(pixel);
36 218918 stride_src /= sizeof(pixel);
37
38
2/2
✓ Branch 0 taken 437836 times.
✓ Branch 1 taken 109459 times.
 1094590 for (k = 0; k < 4; k++)
39 875672 offset_table[(k + sao_left_class) & 31] = sao_offset_val[k + 1];
40
2/2
✓ Branch 0 taken 4559504 times.
✓ Branch 1 taken 109459 times.
 9337926 for (y = 0; y < height; y++) {
41
2/2
✓ Branch 0 taken 273977536 times.
✓ Branch 1 taken 4559504 times.
 557074080 for (x = 0; x < width; x++)
42 547955072 dst[x] = av_clip_pixel(src[x] + offset_table[(src[x] >> shift) & 31]);
43 9119008 dst += stride_dst;
44 9119008 src += stride_src;
45 }
46 218918 }
47
48 #define CMP(a, b) (((a) > (b)) - ((a) < (b)))
49
50 1163520 static void FUNC(sao_edge_filter)(uint8_t *_dst, const uint8_t *_src, ptrdiff_t stride_dst, const int16_t *sao_offset_val,
51 int eo, int width, int height) {
52
53 static const uint8_t edge_idx[] = { 1, 2, 0, 3, 4 };
54 static const int8_t pos[4][2][2] = {
55 { { -1, 0 }, { 1, 0 } }, // horizontal
56 { { 0, -1 }, { 0, 1 } }, // vertical
57 { { -1, -1 }, { 1, 1 } }, // 45 degree
58 { { 1, -1 }, { -1, 1 } }, // 135 degree
59 };
60 1163520 pixel *dst = (pixel *)_dst;
61 1163520 const pixel *src = (const pixel *)_src;
62 int a_stride, b_stride;
63 int x, y;
64 1163520 ptrdiff_t stride_src = (2*MAX_PB_SIZE + AV_INPUT_BUFFER_PADDING_SIZE) / sizeof(pixel);
65 1163520 stride_dst /= sizeof(pixel);
66
67 1163520 a_stride = pos[eo][0][0] + pos[eo][0][1] * stride_src;
68 1163520 b_stride = pos[eo][1][0] + pos[eo][1][1] * stride_src;
69
2/2
✓ Branch 0 taken 26565152 times.
✓ Branch 1 taken 581760 times.
 54293824 for (y = 0; y < height; y++) {
70
2/2
✓ Branch 0 taken 1379774144 times.
✓ Branch 1 taken 26565152 times.
 2812678592 for (x = 0; x < width; x++) {
71 2759548288 int diff0 = CMP(src[x], src[x + a_stride]);
72 2759548288 int diff1 = CMP(src[x], src[x + b_stride]);
73 2759548288 int offset_val = edge_idx[2 + diff0 + diff1];
74 2759548288 dst[x] = av_clip_pixel(src[x] + sao_offset_val[offset_val]);
75 }
76 53130304 src += stride_src;
77 53130304 dst += stride_dst;
78 }
79 1163520 }
80
81 1105926 static void FUNC(sao_edge_restore_0)(uint8_t *_dst, const uint8_t *_src,
82 ptrdiff_t stride_dst, ptrdiff_t stride_src, const SAOParams *sao,
83 const int *borders, int _width, int _height,
84 int c_idx, const uint8_t *vert_edge,
85 const uint8_t *horiz_edge, const uint8_t *diag_edge)
86 {
87 int x, y;
88 1105926 pixel *dst = (pixel *)_dst;
89 1105926 const pixel *src = (const pixel *)_src;
90 1105926 const int16_t *sao_offset_val = sao->offset_val[c_idx];
91 1105926 int sao_eo_class = sao->eo_class[c_idx];
92 1105926 int init_x = 0, width = _width, height = _height;
93
94 1105926 stride_dst /= sizeof(pixel);
95 1105926 stride_src /= sizeof(pixel);
96
97
2/2
✓ Branch 0 taken 453521 times.
✓ Branch 1 taken 99442 times.
 1105926 if (sao_eo_class != SAO_EO_VERT) {
98
2/2
✓ Branch 0 taken 14438 times.
✓ Branch 1 taken 439083 times.
 907042 if (borders[0]) {
99 28876 int offset_val = sao_offset_val[0];
100
2/2
✓ Branch 0 taken 692360 times.
✓ Branch 1 taken 14438 times.
 1413596 for (y = 0; y < height; y++) {
101 1384720 dst[y * stride_dst] = av_clip_pixel(src[y * stride_src] + offset_val);
102 }
103 28876 init_x = 1;
104 }
105
2/2
✓ Branch 0 taken 16650 times.
✓ Branch 1 taken 436871 times.
 907042 if (borders[2]) {
106 33300 int offset_val = sao_offset_val[0];
107 33300 int offset = width - 1;
108
2/2
✓ Branch 0 taken 771128 times.
✓ Branch 1 taken 16650 times.
 1575556 for (x = 0; x < height; x++) {
109 1542256 dst[x * stride_dst + offset] = av_clip_pixel(src[x * stride_src + offset] + offset_val);
110 }
111 33300 width--;
112 }
113 }
114
2/2
✓ Branch 0 taken 458268 times.
✓ Branch 1 taken 94695 times.
 1105926 if (sao_eo_class != SAO_EO_HORIZ) {
115
2/2
✓ Branch 0 taken 18860 times.
✓ Branch 1 taken 439408 times.
 916536 if (borders[1]) {
116 37720 int offset_val = sao_offset_val[0];
117
2/2
✓ Branch 0 taken 914627 times.
✓ Branch 1 taken 18860 times.
 1866974 for (x = init_x; x < width; x++)
118 1829254 dst[x] = av_clip_pixel(src[x] + offset_val);
119 }
120
2/2
✓ Branch 0 taken 24852 times.
✓ Branch 1 taken 433416 times.
 916536 if (borders[3]) {
121 49704 int offset_val = sao_offset_val[0];
122 49704 ptrdiff_t y_stride_dst = stride_dst * (height - 1);
123 49704 ptrdiff_t y_stride_src = stride_src * (height - 1);
124
2/2
✓ Branch 0 taken 1179228 times.
✓ Branch 1 taken 24852 times.
 2408160 for (x = init_x; x < width; x++)
125 2358456 dst[x + y_stride_dst] = av_clip_pixel(src[x + y_stride_src] + offset_val);
126 49704 height--;
127 }
128 }
129 1105926 }
130
131 68804 static void FUNC(sao_edge_restore_1)(uint8_t *_dst, const uint8_t *_src,
132 ptrdiff_t stride_dst, ptrdiff_t stride_src, const SAOParams *sao,
133 const int *borders, int _width, int _height,
134 int c_idx, const uint8_t *vert_edge,
135 const uint8_t *horiz_edge, const uint8_t *diag_edge)
136 {
137 int x, y;
138 68804 pixel *dst = (pixel *)_dst;
139 68804 const pixel *src = (const pixel *)_src;
140 68804 const int16_t *sao_offset_val = sao->offset_val[c_idx];
141 68804 int sao_eo_class = sao->eo_class[c_idx];
142 68804 int init_x = 0, init_y = 0, width = _width, height = _height;
143
144 68804 stride_dst /= sizeof(pixel);
145 68804 stride_src /= sizeof(pixel);
146
147
2/2
✓ Branch 0 taken 22813 times.
✓ Branch 1 taken 11589 times.
 68804 if (sao_eo_class != SAO_EO_VERT) {
148
2/2
✓ Branch 0 taken 1981 times.
✓ Branch 1 taken 20832 times.
 45626 if (borders[0]) {
149 3962 int offset_val = sao_offset_val[0];
150
2/2
✓ Branch 0 taken 135128 times.
✓ Branch 1 taken 1981 times.
 274218 for (y = 0; y < height; y++) {
151 270256 dst[y * stride_dst] = av_clip_pixel(src[y * stride_src] + offset_val);
152 }
153 3962 init_x = 1;
154 }
155
2/2
✓ Branch 0 taken 1455 times.
✓ Branch 1 taken 21358 times.
 45626 if (borders[2]) {
156 2910 int offset_val = sao_offset_val[0];
157 2910 int offset = width - 1;
158
2/2
✓ Branch 0 taken 101504 times.
✓ Branch 1 taken 1455 times.
 205918 for (x = 0; x < height; x++) {
159 203008 dst[x * stride_dst + offset] = av_clip_pixel(src[x * stride_src + offset] + offset_val);
160 }
161 2910 width--;
162 }
163 }
164
2/2
✓ Branch 0 taken 24643 times.
✓ Branch 1 taken 9759 times.
 68804 if (sao_eo_class != SAO_EO_HORIZ) {
165
2/2
✓ Branch 0 taken 3402 times.
✓ Branch 1 taken 21241 times.
 49286 if (borders[1]) {
166 6804 int offset_val = sao_offset_val[0];
167
2/2
✓ Branch 0 taken 230325 times.
✓ Branch 1 taken 3402 times.
 467454 for (x = init_x; x < width; x++)
168 460650 dst[x] = av_clip_pixel(src[x] + offset_val);
169 6804 init_y = 1;
170 }
171
2/2
✓ Branch 0 taken 3185 times.
✓ Branch 1 taken 21458 times.
 49286 if (borders[3]) {
172 6370 int offset_val = sao_offset_val[0];
173 6370 ptrdiff_t y_stride_dst = stride_dst * (height - 1);
174 6370 ptrdiff_t y_stride_src = stride_src * (height - 1);
175
2/2
✓ Branch 0 taken 219896 times.
✓ Branch 1 taken 3185 times.
 446162 for (x = init_x; x < width; x++)
176 439792 dst[x + y_stride_dst] = av_clip_pixel(src[x + y_stride_src] + offset_val);
177 6370 height--;
178 }
179 }
180
181 {
182
8/8
✓ Branch 0 taken 33786 times.
✓ Branch 1 taken 616 times.
✓ Branch 2 taken 5392 times.
✓ Branch 3 taken 28394 times.
✓ Branch 4 taken 4920 times.
✓ Branch 5 taken 472 times.
✓ Branch 6 taken 4389 times.
✓ Branch 7 taken 531 times.
 68804 int save_upper_left = !diag_edge[0] && sao_eo_class == SAO_EO_135D && !borders[0] && !borders[1];
183
8/8
✓ Branch 0 taken 33695 times.
✓ Branch 1 taken 707 times.
✓ Branch 2 taken 7290 times.
✓ Branch 3 taken 26405 times.
✓ Branch 4 taken 6033 times.
✓ Branch 5 taken 1257 times.
✓ Branch 6 taken 5638 times.
✓ Branch 7 taken 395 times.
 68804 int save_upper_right = !diag_edge[1] && sao_eo_class == SAO_EO_45D && !borders[1] && !borders[2];
184
8/8
✓ Branch 0 taken 33552 times.
✓ Branch 1 taken 850 times.
✓ Branch 2 taken 5349 times.
✓ Branch 3 taken 28203 times.
✓ Branch 4 taken 4959 times.
✓ Branch 5 taken 390 times.
✓ Branch 6 taken 4198 times.
✓ Branch 7 taken 761 times.
 68804 int save_lower_right = !diag_edge[2] && sao_eo_class == SAO_EO_135D && !borders[2] && !borders[3];
185
8/8
✓ Branch 0 taken 33603 times.
✓ Branch 1 taken 799 times.
✓ Branch 2 taken 7306 times.
✓ Branch 3 taken 26297 times.
✓ Branch 4 taken 6475 times.
✓ Branch 5 taken 831 times.
✓ Branch 6 taken 5571 times.
✓ Branch 7 taken 904 times.
 68804 int save_lower_left = !diag_edge[3] && sao_eo_class == SAO_EO_45D && !borders[0] && !borders[3];
186
187 // Restore pixels that can't be modified
188
4/4
✓ Branch 0 taken 411 times.
✓ Branch 1 taken 33991 times.
✓ Branch 2 taken 301 times.
✓ Branch 3 taken 110 times.
 68804 if(vert_edge[0] && sao_eo_class != SAO_EO_VERT) {
189
2/2
✓ Branch 0 taken 25875 times.
✓ Branch 1 taken 301 times.
 52352 for(y = init_y+save_upper_left; y< height-save_lower_left; y++)
190 51750 dst[y*stride_dst] = src[y*stride_src];
191 }
192
4/4
✓ Branch 0 taken 496 times.
✓ Branch 1 taken 33906 times.
✓ Branch 2 taken 377 times.
✓ Branch 3 taken 119 times.
 68804 if(vert_edge[1] && sao_eo_class != SAO_EO_VERT) {
193
2/2
✓ Branch 0 taken 31460 times.
✓ Branch 1 taken 377 times.
 63674 for(y = init_y+save_upper_right; y< height-save_lower_right; y++)
194 62920 dst[y*stride_dst+width-1] = src[y*stride_src+width-1];
195 }
196
197
4/4
✓ Branch 0 taken 482 times.
✓ Branch 1 taken 33920 times.
✓ Branch 2 taken 342 times.
✓ Branch 3 taken 140 times.
 68804 if(horiz_edge[0] && sao_eo_class != SAO_EO_HORIZ) {
198
2/2
✓ Branch 0 taken 25650 times.
✓ Branch 1 taken 342 times.
 51984 for(x = init_x+save_upper_left; x < width-save_upper_right; x++)
199 51300 dst[x] = src[x];
200 }
201
4/4
✓ Branch 0 taken 665 times.
✓ Branch 1 taken 33737 times.
✓ Branch 2 taken 489 times.
✓ Branch 3 taken 176 times.
 68804 if(horiz_edge[1] && sao_eo_class != SAO_EO_HORIZ) {
202
2/2
✓ Branch 0 taken 37867 times.
✓ Branch 1 taken 489 times.
 76712 for(x = init_x+save_lower_left; x < width-save_lower_right; x++)
203 75734 dst[(height-1)*stride_dst+x] = src[(height-1)*stride_src+x];
204 }
205
4/4
✓ Branch 0 taken 616 times.
✓ Branch 1 taken 33786 times.
✓ Branch 2 taken 143 times.
✓ Branch 3 taken 473 times.
 68804 if(diag_edge[0] && sao_eo_class == SAO_EO_135D)
206 286 dst[0] = src[0];
207
4/4
✓ Branch 0 taken 707 times.
✓ Branch 1 taken 33695 times.
✓ Branch 2 taken 229 times.
✓ Branch 3 taken 478 times.
 68804 if(diag_edge[1] && sao_eo_class == SAO_EO_45D)
208 458 dst[width-1] = src[width-1];
209
4/4
✓ Branch 0 taken 850 times.
✓ Branch 1 taken 33552 times.
✓ Branch 2 taken 186 times.
✓ Branch 3 taken 664 times.
 68804 if(diag_edge[2] && sao_eo_class == SAO_EO_135D)
210 372 dst[stride_dst*(height-1)+width-1] = src[stride_src*(height-1)+width-1];
211
4/4
✓ Branch 0 taken 799 times.
✓ Branch 1 taken 33603 times.
✓ Branch 2 taken 213 times.
✓ Branch 3 taken 586 times.
 68804 if(diag_edge[3] && sao_eo_class == SAO_EO_45D)
212 426 dst[stride_dst*(height-1)] = src[stride_src*(height-1)];
213
214 }
215 68804 }
216
217 #undef CMP
218