FFmpeg coverage

Directory:	../../../ffmpeg/
File:	src/libavcodec/tests/h264_levels.c
Date:	2025-07-11 09:13:03

	Exec	Total	Coverage
Lines:	27	27	100.0%
Functions:	1	1	100.0%
Branches:	33	60	55.0%

  
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      /*
    
       * This file is part of FFmpeg.
    
       *
    
       * FFmpeg is free software; you can redistribute it and/or
    
       * modify it under the terms of the GNU Lesser General Public
    
       * License as published by the Free Software Foundation; either
    
       * version 2.1 of the License, or (at your option) any later version.
    
       *
    
       * FFmpeg is distributed in the hope that it will be useful,
    
       * but WITHOUT ANY WARRANTY; without even the implied warranty of
    
       * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    
       * Lesser General Public License for more details.
    
       *
    
       * You should have received a copy of the GNU Lesser General Public
    
       * License along with FFmpeg; if not, write to the Free Software
    
       * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    
       */
    
      #include <inttypes.h>
    
      #include <stddef.h>
    
      #include "libavutil/log.h"
    
      #include "libavutil/macros.h"
    
      #include "libavcodec/h264_levels.h"
    
      static const struct {
    
          int width;
    
          int height;
    
          int level_idc;
    
      } test_sizes[] = {
    
          // First level usable at some standard sizes.
    
          // (From H.264 table A-6.)
    
          {  176,  144, 10 }, // QCIF
    
          {  352,  288, 11 }, // CIF
    
          {  640,  480, 22 }, // VGA
    
          {  720,  480, 22 }, // NTSC
    
          {  720,  576, 22 }, // PAL
    
          {  800,  600, 31 }, // SVGA
    
          { 1280,  720, 31 }, // 720p
    
          { 1280, 1024, 32 }, // SXGA
    
          { 1920, 1080, 40 }, // 1080p
    
          { 2048, 1080, 42 }, // 2Kx1080
    
          { 2048, 1536, 50 }, // 4XGA
    
          { 3840, 2160, 51 }, // 4K
    
          { 7680, 4320, 60 }, // 8K
    
          // Overly wide or tall sizes.
    
          {    1,  256, 10 },
    
          {    1,  512, 11 },
    
          {    1, 1024, 21 },
    
          {    1, 1808, 22 },
    
          {    1, 1824, 31 },
    
          {  256,    1, 10 },
    
          {  512,    1, 11 },
    
          { 1024,    1, 21 },
    
          { 1808,    1, 22 },
    
          { 1824,    1, 31 },
    
          {  512, 4096, 40 },
    
          {  256, 4112, 42 },
    
          { 8688, 1024, 51 },
    
          { 8704,  512, 60 },
    
          { 16880,   1, 60 },
    
          { 16896,   1,  0 },
    
      };
    
      static const struct {
    
          int width;
    
          int height;
    
          int framerate;
    
          int level_idc;
    
      } test_framerate[] = {
    
          // Some typical sizes and frame rates.
    
          // (From H.264 table A-1 and table A-6)
    
          {  176,  144,  15, 10 },
    
          {  176,  144,  16, 11 },
    
          {  320,  240,  10, 11 },
    
          {  320,  240,  20, 12 },
    
          {  320,  240,  40, 21 },
    
          {  352,  288,  30, 13 },
    
          {  352,  288,  51, 22 },
    
          {  352,  576,  25, 21 },
    
          {  352,  576,  26, 30 },
    
          {  640,  480,  33, 30 },
    
          {  640,  480,  34, 31 },
    
          {  720,  480,  50, 31 },
    
          {  720,  576,  25, 30 },
    
          {  800,  600,  55, 31 },
    
          { 1024,  768,  35, 31 },
    
          { 1024,  768,  70, 32 },
    
          { 1280,  720,  30, 31 },
    
          { 1280,  720,  31, 32 },
    
          { 1280,  960,  45, 32 },
    
          { 1280,  960,  46, 40 },
    
          { 1280, 1024,  42, 32 },
    
          { 1600, 1200,  32, 40 },
    
          { 1600, 1200,  33, 42 },
    
          { 1920, 1088,  30, 40 },
    
          { 1920, 1088,  55, 42 },
    
          { 2048, 1024,  30, 40 },
    
          { 2048, 1024,  62, 42 },
    
          { 2048, 1088,  60, 42 },
    
          { 3680, 1536,  26, 50 },
    
          { 4096, 2048,  30, 51 },
    
          { 4096, 2048,  59, 52 },
    
          { 4096, 2160,  60, 52 },
    
      };
    
      static const struct {
    
          int width;
    
          int height;
    
          int dpb_size;
    
          int level_idc;
    
      } test_dpb[] = {
    
          // First level usable for some DPB sizes.
    
          // (From H.264 table A-7.)
    
          {  176,  144,  4, 10 },
    
          {  176,  144,  8, 11 },
    
          {  176,  144, 16, 12 },
    
          { 1280,  720,  1, 31 },
    
          { 1280,  720,  5, 31 },
    
          { 1280,  720,  9, 40 },
    
          { 1280,  720, 10, 50 },
    
          { 1920, 1080,  1, 40 },
    
          { 1920, 1080,  5, 50 },
    
          { 1920, 1080, 13, 50 },
    
          { 1920, 1080, 14, 51 },
    
          { 3840, 2160,  5, 51 },
    
          { 3840, 2160,  6, 60 },
    
          { 3840, 2160, 16, 60 },
    
          { 7680, 4320,  5, 60 },
    
          { 7680, 4320,  6,  0 },
    
      };
    
      static const struct {
    
          int64_t bitrate;
    
          int profile_idc;
    
          int level_idc;
    
      } test_bitrate[] = {
    
          // Values where profile affects level at a given bitrate.
    
          {   2500000,  77, 21 },
    
          {   2500000, 100, 20 },
    
          {   2500000, 244, 13 },
    
          { 100000000,  77, 50 },
    
          { 100000000, 100, 50 },
    
          { 100000000, 244, 41 },
    
          { 999999999,  77,  0 },
    
          { 999999999, 100, 62 },
    
          // Check level 1b.
    
          {  32 * 1200,  66, 10 },
    
          {  32 * 1500, 100, 10 },
    
          {  96 * 1200,  66, 11 },
    
          {  96 * 1500, 100,  9 },
    
          { 144 * 1200,  66, 11 },
    
          { 144 * 1500, 100, 11 },
    
      };
    
      static const struct {
    
          const char *name;
    
          int profile_idc;
    
          int64_t bitrate;
    
          int width;
    
          int height;
    
          int dpb_frames;
    
          int level_idc;
    
      } test_all[] = {
    
          { "Bluray 1080p 40Mb/s", 100, 40000000, 1920, 1080, 4, 41 },
    
          { "Bluray 1080p 24Mb/s", 100, 24000000, 1920, 1080, 4, 40 },
    
          { "Bluray 720p 40Mb/s",  100, 40000000, 1280,  720, 6, 41 },
    
          { "Bluray 720p 24Mb/s",  100, 24000000, 1280,  720, 6, 40 },
    
          { "Bluray PAL 40Mb/s",   100, 40000000,  720,  576, 6, 41 },
    
          { "Bluray PAL 24Mb/s",   100, 24000000,  720,  576, 6, 32 },
    
          { "Bluray PAL 16Mb/s",   100, 16800000,  720,  576, 6, 31 },
    
          { "Bluray PAL 12Mb/s",   100, 12000000,  720,  576, 5, 30 },
    
          { "Bluray NTSC 40Mb/s",  100, 40000000,  720,  480, 6, 41 },
    
          { "Bluray NTSC 24Mb/s",  100, 24000000,  720,  480, 6, 32 },
    
          { "Bluray NTSC 16Mb/s",  100, 16800000,  720,  480, 6, 31 },
    
          { "Bluray NTSC 12Mb/s",  100, 12000000,  720,  480, 6, 30 },
    
      };
    
      1
      int main(void)
    
      {
    
          const H264LevelDescriptor *level;
    
          int i;
    
      #define CHECK(expected, format, ...) do { \
    
              if (expected ? (!level || level->level_idc != expected) \
    
                           : !!level) { \
    
                  av_log(NULL, AV_LOG_ERROR, "Incorrect level for " \
    
                         format ": expected %d, got %d.\n", __VA_ARGS__, \
    
                         expected, level ? level->level_idc : -1); \
    
                  return 1; \
    
              } \
    
          } while (0)
    
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      30
          for (i = 0; i < FF_ARRAY_ELEMS(test_sizes); i++) {
    
      29
              level = ff_h264_guess_level(0, 0, 0, test_sizes[i].width,
    
      29
                                          test_sizes[i].height, 0);
    
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      29
              CHECK(test_sizes[i].level_idc, "size %dx%d",
    
                    test_sizes[i].width, test_sizes[i].height);
    
          }
    
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      33
          for (i = 0; i < FF_ARRAY_ELEMS(test_framerate); i++) {
    
      32
              level = ff_h264_guess_level(0, 0, test_framerate[i].framerate,
    
      32
                                          test_framerate[i].width,
    
      32
                                          test_framerate[i].height, 0);
    
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      32
              CHECK(test_framerate[i].level_idc, "framerate %d, size %dx%d",
    
                    test_framerate[i].framerate, test_framerate[i].width,
    
                    test_framerate[i].height);
    
          }
    
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      17
          for (i = 0; i < FF_ARRAY_ELEMS(test_dpb); i++) {
    
      16
              level = ff_h264_guess_level(0, 0, 0, test_dpb[i].width,
    
      16
                                          test_dpb[i].height,
    
      16
                                          test_dpb[i].dpb_size);
    
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      16
              CHECK(test_dpb[i].level_idc, "size %dx%d dpb %d",
    
                    test_dpb[i].width, test_dpb[i].height,
    
                    test_dpb[i].dpb_size);
    
          }
    
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      15
          for (i = 0; i < FF_ARRAY_ELEMS(test_bitrate); i++) {
    
      14
              level = ff_h264_guess_level(test_bitrate[i].profile_idc,
    
      14
                                          test_bitrate[i].bitrate,
    
                                          0, 0, 0, 0);
    
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      14
              CHECK(test_bitrate[i].level_idc, "bitrate %"PRId64" profile %d",
    
                    test_bitrate[i].bitrate, test_bitrate[i].profile_idc);
    
          }
    
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      13
          for (i = 0; i < FF_ARRAY_ELEMS(test_all); i++) {
    
      12
              level = ff_h264_guess_level(test_all[i].profile_idc,
    
      12
                                          test_all[i].bitrate,
    
                                          0,
    
      12
                                          test_all[i].width,
    
      12
                                          test_all[i].height,
    
      12
                                          test_all[i].dpb_frames);
    
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      12
              CHECK(test_all[i].level_idc, "%s", test_all[i].name);
    
          }
    
      1
          return 0;
    
      }

Line	Branch	Exec	Source
1			/*
2			* This file is part of FFmpeg.
3			*
4			* FFmpeg is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU Lesser General Public
6			* License as published by the Free Software Foundation; either
7			* version 2.1 of the License, or (at your option) any later version.
8			*
9			* FFmpeg is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12			* Lesser General Public License for more details.
13			*
14			* You should have received a copy of the GNU Lesser General Public
15			* License along with FFmpeg; if not, write to the Free Software
16			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17			*/
18
19			#include <inttypes.h>
20			#include <stddef.h>
21
22			#include "libavutil/log.h"
23			#include "libavutil/macros.h"
24			#include "libavcodec/h264_levels.h"
25
26			static const struct {
27			int width;
28			int height;
29			int level_idc;
30			} test_sizes[] = {
31			// First level usable at some standard sizes.
32			// (From H.264 table A-6.)
33			{ 176, 144, 10 }, // QCIF
34			{ 352, 288, 11 }, // CIF
35			{ 640, 480, 22 }, // VGA
36			{ 720, 480, 22 }, // NTSC
37			{ 720, 576, 22 }, // PAL
38			{ 800, 600, 31 }, // SVGA
39			{ 1280, 720, 31 }, // 720p
40			{ 1280, 1024, 32 }, // SXGA
41			{ 1920, 1080, 40 }, // 1080p
42			{ 2048, 1080, 42 }, // 2Kx1080
43			{ 2048, 1536, 50 }, // 4XGA
44			{ 3840, 2160, 51 }, // 4K
45			{ 7680, 4320, 60 }, // 8K
46
47			// Overly wide or tall sizes.
48			{ 1, 256, 10 },
49			{ 1, 512, 11 },
50			{ 1, 1024, 21 },
51			{ 1, 1808, 22 },
52			{ 1, 1824, 31 },
53			{ 256, 1, 10 },
54			{ 512, 1, 11 },
55			{ 1024, 1, 21 },
56			{ 1808, 1, 22 },
57			{ 1824, 1, 31 },
58			{ 512, 4096, 40 },
59			{ 256, 4112, 42 },
60			{ 8688, 1024, 51 },
61			{ 8704, 512, 60 },
62			{ 16880, 1, 60 },
63			{ 16896, 1, 0 },
64			};
65
66			static const struct {
67			int width;
68			int height;
69			int framerate;
70			int level_idc;
71			} test_framerate[] = {
72			// Some typical sizes and frame rates.
73			// (From H.264 table A-1 and table A-6)
74			{ 176, 144, 15, 10 },
75			{ 176, 144, 16, 11 },
76			{ 320, 240, 10, 11 },
77			{ 320, 240, 20, 12 },
78			{ 320, 240, 40, 21 },
79			{ 352, 288, 30, 13 },
80			{ 352, 288, 51, 22 },
81			{ 352, 576, 25, 21 },
82			{ 352, 576, 26, 30 },
83			{ 640, 480, 33, 30 },
84			{ 640, 480, 34, 31 },
85			{ 720, 480, 50, 31 },
86			{ 720, 576, 25, 30 },
87			{ 800, 600, 55, 31 },
88			{ 1024, 768, 35, 31 },
89			{ 1024, 768, 70, 32 },
90			{ 1280, 720, 30, 31 },
91			{ 1280, 720, 31, 32 },
92			{ 1280, 960, 45, 32 },
93			{ 1280, 960, 46, 40 },
94			{ 1280, 1024, 42, 32 },
95			{ 1600, 1200, 32, 40 },
96			{ 1600, 1200, 33, 42 },
97			{ 1920, 1088, 30, 40 },
98			{ 1920, 1088, 55, 42 },
99			{ 2048, 1024, 30, 40 },
100			{ 2048, 1024, 62, 42 },
101			{ 2048, 1088, 60, 42 },
102			{ 3680, 1536, 26, 50 },
103			{ 4096, 2048, 30, 51 },
104			{ 4096, 2048, 59, 52 },
105			{ 4096, 2160, 60, 52 },
106			};
107
108			static const struct {
109			int width;
110			int height;
111			int dpb_size;
112			int level_idc;
113			} test_dpb[] = {
114			// First level usable for some DPB sizes.
115			// (From H.264 table A-7.)
116			{ 176, 144, 4, 10 },
117			{ 176, 144, 8, 11 },
118			{ 176, 144, 16, 12 },
119			{ 1280, 720, 1, 31 },
120			{ 1280, 720, 5, 31 },
121			{ 1280, 720, 9, 40 },
122			{ 1280, 720, 10, 50 },
123			{ 1920, 1080, 1, 40 },
124			{ 1920, 1080, 5, 50 },
125			{ 1920, 1080, 13, 50 },
126			{ 1920, 1080, 14, 51 },
127			{ 3840, 2160, 5, 51 },
128			{ 3840, 2160, 6, 60 },
129			{ 3840, 2160, 16, 60 },
130			{ 7680, 4320, 5, 60 },
131			{ 7680, 4320, 6, 0 },
132			};
133
134			static const struct {
135			int64_t bitrate;
136			int profile_idc;
137			int level_idc;
138			} test_bitrate[] = {
139			// Values where profile affects level at a given bitrate.
140			{ 2500000, 77, 21 },
141			{ 2500000, 100, 20 },
142			{ 2500000, 244, 13 },
143			{ 100000000, 77, 50 },
144			{ 100000000, 100, 50 },
145			{ 100000000, 244, 41 },
146			{ 999999999, 77, 0 },
147			{ 999999999, 100, 62 },
148			// Check level 1b.
149			{ 32 * 1200, 66, 10 },
150			{ 32 * 1500, 100, 10 },
151			{ 96 * 1200, 66, 11 },
152			{ 96 * 1500, 100, 9 },
153			{ 144 * 1200, 66, 11 },
154			{ 144 * 1500, 100, 11 },
155			};
156
157			static const struct {
158			const char *name;
159			int profile_idc;
160			int64_t bitrate;
161			int width;
162			int height;
163			int dpb_frames;
164			int level_idc;
165			} test_all[] = {
166			{ "Bluray 1080p 40Mb/s", 100, 40000000, 1920, 1080, 4, 41 },
167			{ "Bluray 1080p 24Mb/s", 100, 24000000, 1920, 1080, 4, 40 },
168			{ "Bluray 720p 40Mb/s", 100, 40000000, 1280, 720, 6, 41 },
169			{ "Bluray 720p 24Mb/s", 100, 24000000, 1280, 720, 6, 40 },
170			{ "Bluray PAL 40Mb/s", 100, 40000000, 720, 576, 6, 41 },
171			{ "Bluray PAL 24Mb/s", 100, 24000000, 720, 576, 6, 32 },
172			{ "Bluray PAL 16Mb/s", 100, 16800000, 720, 576, 6, 31 },
173			{ "Bluray PAL 12Mb/s", 100, 12000000, 720, 576, 5, 30 },
174			{ "Bluray NTSC 40Mb/s", 100, 40000000, 720, 480, 6, 41 },
175			{ "Bluray NTSC 24Mb/s", 100, 24000000, 720, 480, 6, 32 },
176			{ "Bluray NTSC 16Mb/s", 100, 16800000, 720, 480, 6, 31 },
177			{ "Bluray NTSC 12Mb/s", 100, 12000000, 720, 480, 6, 30 },
178			};
179
180		1	int main(void)
181			{
182			const H264LevelDescriptor *level;
183			int i;
184
185			#define CHECK(expected, format, ...) do { \
186			if (expected ? (!level \|\| level->level_idc != expected) \
187			: !!level) { \
188			av_log(NULL, AV_LOG_ERROR, "Incorrect level for " \
189			format ": expected %d, got %d.\n", __VA_ARGS__, \
190			expected, level ? level->level_idc : -1); \
191			return 1; \
192			} \
193			} while (0)
194
195	2/2 ✓ Branch 0 taken 29 times. ✓ Branch 1 taken 1 times.	30	for (i = 0; i < FF_ARRAY_ELEMS(test_sizes); i++) {
196		29	level = ff_h264_guess_level(0, 0, 0, test_sizes[i].width,
197		29	test_sizes[i].height, 0);
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199			test_sizes[i].width, test_sizes[i].height);
200			}
201
202	2/2 ✓ Branch 0 taken 32 times. ✓ Branch 1 taken 1 times.	33	for (i = 0; i < FF_ARRAY_ELEMS(test_framerate); i++) {
203		32	level = ff_h264_guess_level(0, 0, test_framerate[i].framerate,
204		32	test_framerate[i].width,
205		32	test_framerate[i].height, 0);
206	4/10 ✓ Branch 0 taken 32 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 32 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 32 times. ✗ Branch 6 not taken. ✓ Branch 7 taken 32 times. ✗ Branch 8 not taken. ✗ Branch 9 not taken.	32	CHECK(test_framerate[i].level_idc, "framerate %d, size %dx%d",
207			test_framerate[i].framerate, test_framerate[i].width,
208			test_framerate[i].height);
209			}
210
211	2/2 ✓ Branch 0 taken 16 times. ✓ Branch 1 taken 1 times.	17	for (i = 0; i < FF_ARRAY_ELEMS(test_dpb); i++) {
212		16	level = ff_h264_guess_level(0, 0, 0, test_dpb[i].width,
213		16	test_dpb[i].height,
214		16	test_dpb[i].dpb_size);
215	5/10 ✓ Branch 0 taken 15 times. ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 15 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 15 times. ✗ Branch 6 not taken. ✓ Branch 7 taken 16 times. ✗ Branch 8 not taken. ✗ Branch 9 not taken.	16	CHECK(test_dpb[i].level_idc, "size %dx%d dpb %d",
216			test_dpb[i].width, test_dpb[i].height,
217			test_dpb[i].dpb_size);
218			}
219
220	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 1 times.	15	for (i = 0; i < FF_ARRAY_ELEMS(test_bitrate); i++) {
221		14	level = ff_h264_guess_level(test_bitrate[i].profile_idc,
222		14	test_bitrate[i].bitrate,
223			0, 0, 0, 0);
224	5/10 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 13 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 13 times. ✗ Branch 6 not taken. ✓ Branch 7 taken 14 times. ✗ Branch 8 not taken. ✗ Branch 9 not taken.	14	CHECK(test_bitrate[i].level_idc, "bitrate %"PRId64" profile %d",
225			test_bitrate[i].bitrate, test_bitrate[i].profile_idc);
226			}
227
228	2/2 ✓ Branch 0 taken 12 times. ✓ Branch 1 taken 1 times.	13	for (i = 0; i < FF_ARRAY_ELEMS(test_all); i++) {
229		12	level = ff_h264_guess_level(test_all[i].profile_idc,
230		12	test_all[i].bitrate,
231			0,
232		12	test_all[i].width,
233		12	test_all[i].height,
234		12	test_all[i].dpb_frames);
235	4/10 ✓ Branch 0 taken 12 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 12 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 12 times. ✗ Branch 6 not taken. ✓ Branch 7 taken 12 times. ✗ Branch 8 not taken. ✗ Branch 9 not taken.	12	CHECK(test_all[i].level_idc, "%s", test_all[i].name);
236			}
237
238		1	return 0;
239			}
240