FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/h26x/h2656_sao_template.c
Date: 2026-01-16 07:34:38
Exec Total Coverage
Lines: 116 122 95.1%
Functions: 9 12 75.0%
Branches: 119 122 97.5%
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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 12248 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 12248 pixel *dst = (pixel *)_dst;
30 12248 const pixel *src = (const pixel *)_src;
31 12248 int offset_table[32] = { 0 };
32 int k, y, x;
33 12248 int shift = BIT_DEPTH - 5;
34
35 12248 stride_dst /= sizeof(pixel);
36 12248 stride_src /= sizeof(pixel);
37
38
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 61240 for (k = 0; k < 4; k++)
39 48992 offset_table[(k + sao_left_class) & 31] = sao_offset_val[k + 1];
40
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 1371784 for (y = 0; y < height; y++) {
41
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 164950256 for (x = 0; x < width; x++)
42 163590720 dst[x] = av_clip_pixel(src[x] + offset_table[(src[x] >> shift) & 31]);
43 1359536 dst += stride_dst;
44 1359536 src += stride_src;
45 }
46 12248 }
47
48 #define CMP(a, b) (((a) > (b)) - ((a) < (b)))
49
50 20728 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 20728 pixel *dst = (pixel *)_dst;
61 20728 const pixel *src = (const pixel *)_src;
62 int a_stride, b_stride;
63 int x, y;
64 20728 ptrdiff_t stride_src = (2*MAX_PB_SIZE + AV_INPUT_BUFFER_PADDING_SIZE) / sizeof(pixel);
65 20728 stride_dst /= sizeof(pixel);
66
67 20728 a_stride = pos[eo][0][0] + pos[eo][0][1] * stride_src;
68 20728 b_stride = pos[eo][1][0] + pos[eo][1][1] * stride_src;
69
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70
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 223179232 for (x = 0; x < width; x++) {
71 221143616 int diff0 = CMP(src[x], src[x + a_stride]);
72 221143616 int diff1 = CMP(src[x], src[x + b_stride]);
73 221143616 int offset_val = edge_idx[2 + diff0 + diff1];
74 221143616 dst[x] = av_clip_pixel(src[x] + sao_offset_val[offset_val]);
75 }
76 2035616 src += stride_src;
77 2035616 dst += stride_dst;
78 }
79 20728 }
80
81 350 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;
88 350 pixel *dst = (pixel *)_dst;
89 350 const pixel *src = (const pixel *)_src;
90 350 const int16_t *sao_offset_val = sao->offset_val[c_idx];
91 350 int sao_eo_class = sao->eo_class[c_idx];
92 350 int init_x = 0, width = _width, height = _height;
93
94 350 stride_dst /= sizeof(pixel);
95 350 stride_src /= sizeof(pixel);
96
97
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 350 if (sao_eo_class != SAO_EO_VERT) {
98
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 294 if (borders[0]) {
99 8 int offset_val = sao_offset_val[0];
100
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 520 for (y = 0; y < height; y++) {
101 512 dst[y * stride_dst] = av_clip_pixel(src[y * stride_src] + offset_val);
102 }
103 8 init_x = 1;
104 }
105
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 294 if (borders[2]) {
106 12 int offset_val = sao_offset_val[0];
107 12 int offset = width - 1;
108
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 1548 for (x = 0; x < height; x++) {
109 1536 dst[x * stride_dst + offset] = av_clip_pixel(src[x * stride_src + offset] + offset_val);
110 }
111 12 width--;
112 }
113 }
114
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 350 if (sao_eo_class != SAO_EO_HORIZ) {
115
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 290 if (borders[1]) {
116 60 int offset_val = sao_offset_val[0];
117
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 7220 for (x = init_x; x < width; x++)
118 7160 dst[x] = av_clip_pixel(src[x] + offset_val);
119 }
120
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 290 if (borders[3]) {
121 ✗ int offset_val = sao_offset_val[0];
122 ✗ ptrdiff_t y_stride_dst = stride_dst * (height - 1);
123 ✗ ptrdiff_t y_stride_src = stride_src * (height - 1);
124 ✗ for (x = init_x; x < width; x++)
125 ✗ dst[x + y_stride_dst] = av_clip_pixel(src[x + y_stride_src] + offset_val);
126 ✗ height--;
127 }
128 }
129 350 }
130
131 19802 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 19802 pixel *dst = (pixel *)_dst;
139 19802 const pixel *src = (const pixel *)_src;
140 19802 const int16_t *sao_offset_val = sao->offset_val[c_idx];
141 19802 int sao_eo_class = sao->eo_class[c_idx];
142 19802 int init_x = 0, init_y = 0, width = _width, height = _height;
143
144 19802 stride_dst /= sizeof(pixel);
145 19802 stride_src /= sizeof(pixel);
146
147
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 19802 if (sao_eo_class != SAO_EO_VERT) {
148
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 14090 if (borders[0]) {
149 1440 int offset_val = sao_offset_val[0];
150
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 143152 for (y = 0; y < height; y++) {
151 141712 dst[y * stride_dst] = av_clip_pixel(src[y * stride_src] + offset_val);
152 }
153 1440 init_x = 1;
154 }
155
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 14090 if (borders[2]) {
156 1310 int offset_val = sao_offset_val[0];
157 1310 int offset = width - 1;
158
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 126238 for (x = 0; x < height; x++) {
159 124928 dst[x * stride_dst + offset] = av_clip_pixel(src[x * stride_src + offset] + offset_val);
160 }
161 1310 width--;
162 }
163 }
164
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 19802 if (sao_eo_class != SAO_EO_HORIZ) {
165
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 15956 if (borders[1]) {
166 2770 int offset_val = sao_offset_val[0];
167
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 264650 for (x = init_x; x < width; x++)
168 261880 dst[x] = av_clip_pixel(src[x] + offset_val);
169 2770 init_y = 1;
170 }
171
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 15956 if (borders[3]) {
172 2870 int offset_val = sao_offset_val[0];
173 2870 ptrdiff_t y_stride_dst = stride_dst * (height - 1);
174 2870 ptrdiff_t y_stride_src = stride_src * (height - 1);
175
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 275306 for (x = init_x; x < width; x++)
176 272436 dst[x + y_stride_dst] = av_clip_pixel(src[x + y_stride_src] + offset_val);
177 2870 height--;
178 }
179 }
180
181 {
182
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 19802 int save_upper_left = !diag_edge[0] && sao_eo_class == SAO_EO_135D && !borders[0] && !borders[1];
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 19802 int save_upper_right = !diag_edge[1] && sao_eo_class == SAO_EO_45D && !borders[1] && !borders[2];
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 19802 int save_lower_right = !diag_edge[2] && sao_eo_class == SAO_EO_135D && !borders[2] && !borders[3];
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 19802 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
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 19802 if(vert_edge[0] && sao_eo_class != SAO_EO_VERT) {
189
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 51098 for(y = init_y+save_upper_left; y< height-save_lower_left; y++)
190 50534 dst[y*stride_dst] = src[y*stride_src];
191 }
192
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 19802 if(vert_edge[1] && sao_eo_class != SAO_EO_VERT) {
193
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 60770 for(y = init_y+save_upper_right; y< height-save_lower_right; y++)
194 60108 dst[y*stride_dst+width-1] = src[y*stride_src+width-1];
195 }
196
197
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 19802 if(horiz_edge[0] && sao_eo_class != SAO_EO_HORIZ) {
198
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 48102 for(x = init_x+save_upper_left; x < width-save_upper_right; x++)
199 47536 dst[x] = src[x];
200 }
201
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 19802 if(horiz_edge[1] && sao_eo_class != SAO_EO_HORIZ) {
202
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 70790 for(x = init_x+save_lower_left; x < width-save_lower_right; x++)
203 69992 dst[(height-1)*stride_dst+x] = src[(height-1)*stride_src+x];
204 }
205
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 19802 if(diag_edge[0] && sao_eo_class == SAO_EO_135D)
206 230 dst[0] = src[0];
207
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 19802 if(diag_edge[1] && sao_eo_class == SAO_EO_45D)
208 350 dst[width-1] = src[width-1];
209
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 19802 if(diag_edge[2] && sao_eo_class == SAO_EO_135D)
210 264 dst[stride_dst*(height-1)+width-1] = src[stride_src*(height-1)+width-1];
211
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 19802 if(diag_edge[3] && sao_eo_class == SAO_EO_45D)
212 342 dst[stride_dst*(height-1)] = src[stride_src*(height-1)];
213
214 }
215 19802 }
216
217 #undef CMP
218