FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/tests/checkasm/h264pred.c
Date: 2025-10-30 16:00:47
Exec Total Coverage
Lines: 61 65 93.8%
Functions: 5 5 100.0%
Branches: 85 120 70.8%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2015 Henrik Gramner
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #include <string.h>
22 #include "checkasm.h"
23 #include "libavcodec/codec_id.h"
24 #include "libavcodec/h264pred.h"
25 #include "libavutil/common.h"
26 #include "libavutil/internal.h"
27 #include "libavutil/intreadwrite.h"
28 #include "libavutil/mem_internal.h"
29
30 static const int codec_ids[4] = { AV_CODEC_ID_H264, AV_CODEC_ID_VP8, AV_CODEC_ID_RV40, AV_CODEC_ID_SVQ3 };
31
32 static const char * const pred4x4_modes[4][15] = {
33 { /* H.264 */
34 [VERT_PRED ] = "vertical",
35 [HOR_PRED ] = "horizontal",
36 [DC_PRED ] = "dc",
37 [DIAG_DOWN_LEFT_PRED ] = "down_left",
38 [DIAG_DOWN_RIGHT_PRED] = "down_right",
39 [VERT_RIGHT_PRED ] = "vertical_right",
40 [HOR_DOWN_PRED ] = "horizontal_right",
41 [VERT_LEFT_PRED ] = "vertical_left",
42 [HOR_UP_PRED ] = "horizontal_up",
43 [LEFT_DC_PRED ] = "left_dc",
44 [TOP_DC_PRED ] = "top_dc",
45 [DC_128_PRED ] = "dc_128",
46 },
47 { /* VP8 */
48 [VERT_PRED ] = "vertical_vp8",
49 [HOR_PRED ] = "horizontal_vp8",
50 [VERT_LEFT_PRED] = "vertical_left_vp8",
51 [TM_VP8_PRED ] = "tm_vp8",
52 [DC_127_PRED ] = "dc_127_vp8",
53 [DC_129_PRED ] = "dc_129_vp8",
54 },
55 { /* RV40 */
56 [DIAG_DOWN_LEFT_PRED ] = "down_left_rv40",
57 [VERT_LEFT_PRED ] = "vertical_left_rv40",
58 [HOR_UP_PRED ] = "horizontal_up_rv40",
59 [DIAG_DOWN_LEFT_PRED_RV40_NODOWN] = "down_left_nodown_rv40",
60 [HOR_UP_PRED_RV40_NODOWN ] = "horizontal_up_nodown_rv40",
61 [VERT_LEFT_PRED_RV40_NODOWN ] = "vertical_left_nodown_rv40",
62 },
63 { /* SVQ3 */
64 [DIAG_DOWN_LEFT_PRED] = "down_left_svq3",
65 },
66 };
67
68 static const char * const pred8x8_modes[4][11] = {
69 { /* H.264 */
70 [DC_PRED8x8 ] = "dc",
71 [HOR_PRED8x8 ] = "horizontal",
72 [VERT_PRED8x8 ] = "vertical",
73 [PLANE_PRED8x8 ] = "plane",
74 [LEFT_DC_PRED8x8 ] = "left_dc",
75 [TOP_DC_PRED8x8 ] = "top_dc",
76 [DC_128_PRED8x8 ] = "dc_128",
77 [ALZHEIMER_DC_L0T_PRED8x8] = "mad_cow_dc_l0t",
78 [ALZHEIMER_DC_0LT_PRED8x8] = "mad_cow_dc_0lt",
79 [ALZHEIMER_DC_L00_PRED8x8] = "mad_cow_dc_l00",
80 [ALZHEIMER_DC_0L0_PRED8x8] = "mad_cow_dc_0l0",
81 },
82 { /* VP8 */
83 [PLANE_PRED8x8 ] = "tm_vp8",
84 [DC_127_PRED8x8] = "dc_127_vp8",
85 [DC_129_PRED8x8] = "dc_129_vp8",
86 },
87 { /* RV40 */
88 [DC_PRED8x8 ] = "dc_rv40",
89 [LEFT_DC_PRED8x8] = "left_dc_rv40",
90 [TOP_DC_PRED8x8 ] = "top_dc_rv40",
91 },
92 /* nothing for SVQ3 */
93 };
94
95 static const char * const pred16x16_modes[4][9] = {
96 { /* H.264 */
97 [DC_PRED8x8 ] = "dc",
98 [HOR_PRED8x8 ] = "horizontal",
99 [VERT_PRED8x8 ] = "vertical",
100 [PLANE_PRED8x8 ] = "plane",
101 [LEFT_DC_PRED8x8] = "left_dc",
102 [TOP_DC_PRED8x8 ] = "top_dc",
103 [DC_128_PRED8x8 ] = "dc_128",
104 },
105 { /* VP8 */
106 [PLANE_PRED8x8 ] = "tm_vp8",
107 [DC_127_PRED8x8] = "dc_127_vp8",
108 [DC_129_PRED8x8] = "dc_129_vp8",
109 },
110 { /* RV40 */
111 [PLANE_PRED8x8] = "plane_rv40",
112 },
113 { /* SVQ3 */
114 [PLANE_PRED8x8] = "plane_svq3",
115 },
116 };
117
118 static const uint32_t pixel_mask[3] = { 0xffffffff, 0x01ff01ff, 0x03ff03ff };
119
120 #define SIZEOF_PIXEL ((bit_depth + 7) / 8)
121 #define BUF_SIZE (3 * 16 * 17)
122
123 #define check_pred_func(func, name, mode_name) \
124 (mode_name && ((codec_ids[codec] == AV_CODEC_ID_H264) ? \
125 check_func(func, "pred%s_%s_%d", name, mode_name, bit_depth) : \
126 check_func(func, "pred%s_%s", name, mode_name)))
127
128 #define randomize_buffers() \
129 do { \
130 uint32_t mask = pixel_mask[bit_depth - 8]; \
131 int i; \
132 for (i = 0; i < BUF_SIZE; i += 4) { \
133 uint32_t r = rnd() & mask; \
134 AV_WN32A(buf0 + i, r); \
135 AV_WN32A(buf1 + i, r); \
136 } \
137 } while (0)
138
139 #define src0 (buf0 + 4 * 16) /* Offset to allow room for top and left */
140 #define src1 (buf1 + 4 * 16)
141
142 117 static void check_pred4x4(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
143 int codec, int chroma_format, int bit_depth)
144 {
145
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 117 if (chroma_format == 1) {
146 78 uint8_t *topright = buf0 + 2*16;
147 int pred_mode;
148
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 78 declare_func_emms(AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT, void, uint8_t *src, const uint8_t *topright, ptrdiff_t stride);
149
150
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 1248 for (pred_mode = 0; pred_mode < 15; pred_mode++) {
151
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 1170 if (check_pred_func(h->pred4x4[pred_mode], "4x4", pred4x4_modes[codec][pred_mode])) {
152
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 15170 randomize_buffers();
153 74 call_ref(src0, topright, 12*SIZEOF_PIXEL);
154 74 call_new(src1, topright, 12*SIZEOF_PIXEL);
155
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 74 if (memcmp(buf0, buf1, BUF_SIZE))
156 ✗ fail();
157
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 74 bench_new(src1, topright, 12*SIZEOF_PIXEL);
158 }
159 }
160 }
161 117 }
162
163 117 static void check_pred8x8(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
164 int codec, int chroma_format, int bit_depth)
165 {
166 int pred_mode;
167
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 117 declare_func_emms(AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT, void, uint8_t *src, ptrdiff_t stride);
168
169
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 1404 for (pred_mode = 0; pred_mode < 11; pred_mode++) {
170
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 1287 if (check_pred_func(h->pred8x8[pred_mode], (chroma_format == 2) ? "8x16" : "8x8",
171 pred8x8_modes[codec][pred_mode])) {
172
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 17630 randomize_buffers();
173 86 call_ref(src0, 24*SIZEOF_PIXEL);
174 86 call_new(src1, 24*SIZEOF_PIXEL);
175
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 86 if (memcmp(buf0, buf1, BUF_SIZE))
176 ✗ fail();
177
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 86 bench_new(src1, 24*SIZEOF_PIXEL);
178 }
179 }
180 117 }
181
182 117 static void check_pred16x16(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
183 int codec, int chroma_format, int bit_depth)
184 {
185
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 117 if (chroma_format == 1) {
186 int pred_mode;
187
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 78 declare_func_emms(AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT, void, uint8_t *src, ptrdiff_t stride);
188
189
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 780 for (pred_mode = 0; pred_mode < 9; pred_mode++) {
190
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 702 if (check_pred_func(h->pred16x16[pred_mode], "16x16", pred16x16_modes[codec][pred_mode])) {
191
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 9225 randomize_buffers();
192 45 call_ref(src0, 48);
193 45 call_new(src1, 48);
194
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 45 if (memcmp(buf0, buf1, BUF_SIZE))
195 ✗ fail();
196
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 45 bench_new(src1, 48);
197 }
198 }
199 }
200 117 }
201
202 117 static void check_pred8x8l(H264PredContext *h, uint8_t *buf0, uint8_t *buf1,
203 int codec, int chroma_format, int bit_depth)
204 {
205
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 117 if (chroma_format == 1 && codec_ids[codec] == AV_CODEC_ID_H264) {
206 int pred_mode;
207
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 39 declare_func_emms(AV_CPU_FLAG_MMXEXT, void, uint8_t *src, int topleft, int topright, ptrdiff_t stride);
208
209
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 507 for (pred_mode = 0; pred_mode < 12; pred_mode++) {
210
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 468 if (check_pred_func(h->pred8x8l[pred_mode], "8x8l", pred4x4_modes[codec][pred_mode])) {
211 int neighbors;
212
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 390 for (neighbors = 0; neighbors <= 0xc000; neighbors += 0x4000) {
213 312 int has_topleft = neighbors & 0x8000;
214 312 int has_topright = neighbors & 0x4000;
215
216
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 312 if ((pred_mode == DIAG_DOWN_RIGHT_PRED || pred_mode == VERT_RIGHT_PRED) && !has_topleft)
217 32 continue; /* Those aren't allowed according to the spec */
218
219
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 57400 randomize_buffers();
220 280 call_ref(src0, has_topleft, has_topright, 24*SIZEOF_PIXEL);
221 280 call_new(src1, has_topleft, has_topright, 24*SIZEOF_PIXEL);
222
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 280 if (memcmp(buf0, buf1, BUF_SIZE))
223 ✗ fail();
224
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 280 bench_new(src1, has_topleft, has_topright, 24*SIZEOF_PIXEL);
225 }
226 }
227 }
228 }
229 117 }
230
231 /* TODO: Add tests for H.264 lossless H/V prediction */
232
233 13 void checkasm_check_h264pred(void)
234 {
235 static const struct {
236 void (*func)(H264PredContext*, uint8_t*, uint8_t*, int, int, int);
237 const char *name;
238 } tests[] = {
239 { check_pred4x4, "pred4x4" },
240 { check_pred8x8, "pred8x8" },
241 { check_pred16x16, "pred16x16" },
242 { check_pred8x8l, "pred8x8l" },
243 };
244
245 13 LOCAL_ALIGNED_16(uint8_t, buf0, [BUF_SIZE]);
246 13 LOCAL_ALIGNED_16(uint8_t, buf1, [BUF_SIZE]);
247 H264PredContext h;
248 int test, codec, chroma_format, bit_depth;
249
250
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 65 for (test = 0; test < FF_ARRAY_ELEMS(tests); test++) {
251
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 260 for (codec = 0; codec < 4; codec++) {
252 208 int codec_id = codec_ids[codec];
253
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 520 for (bit_depth = 8; bit_depth <= (codec_id == AV_CODEC_ID_H264 ? 10 : 8); bit_depth++)
254
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 780 for (chroma_format = 1; chroma_format <= (codec_id == AV_CODEC_ID_H264 ? 2 : 1); chroma_format++) {
255 468 ff_h264_pred_init(&h, codec_id, bit_depth, chroma_format);
256 468 tests[test].func(&h, buf0, buf1, codec, chroma_format, bit_depth);
257 }
258 }
259 52 report("%s", tests[test].name);
260 }
261 13 }
262