Including a unit test.
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| @@ -7,6 +7,7 @@ · 6 unmodified lines | ||
| 7 | 7 | /fft-fixed |
| 8 | 8 | /fft-fixed32 |
| 9 | 9 | /golomb |
| 10 | +/h264_levels | |
| 10 | 11 | /htmlsubtitles |
| 11 | 12 | /iirfilter |
| 12 | 13 | /imgconvert |
| @@ -0,0 +1,183 @@ | ||
| 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 "libavutil/common.h" | |
| 20 | +#include "libavcodec/h264_levels.h" | |
| 21 | + | |
| 22 | +static const struct { | |
| 23 | + int width; | |
| 24 | + int height; | |
| 25 | + int level_idc; | |
| 26 | +} test_sizes[] = { | |
| 27 | + // First level usable at some standard sizes. | |
| 28 | + // (From H.264 table A-6.) | |
| 29 | + { 176, 144, 10 }, // QCIF | |
| 30 | + { 352, 288, 11 }, // CIF | |
| 31 | + { 640, 480, 22 }, // VGA | |
| 32 | + { 720, 480, 22 }, // NTSC | |
| 33 | + { 720, 576, 22 }, // PAL | |
| 34 | + { 800, 600, 31 }, // SVGA | |
| 35 | + { 1280, 720, 31 }, // 720p | |
| 36 | + { 1280, 1024, 32 }, // SXGA | |
| 37 | + { 1920, 1080, 40 }, // 1080p | |
| 38 | + { 2048, 1080, 42 }, // 2Kx1080 | |
| 39 | + { 2048, 1536, 50 }, // 4XGA | |
| 40 | + { 3840, 2160, 51 }, // 4K | |
| 41 | + { 7680, 4320, 60 }, // 8K | |
| 42 | + | |
| 43 | + // Overly wide or tall sizes. | |
| 44 | + { 1, 256, 10 }, | |
| 45 | + { 1, 512, 11 }, | |
| 46 | + { 1, 1024, 21 }, | |
| 47 | + { 1, 1808, 22 }, | |
| 48 | + { 1, 1824, 31 }, | |
| 49 | + { 256, 1, 10 }, | |
| 50 | + { 512, 1, 11 }, | |
| 51 | + { 1024, 1, 21 }, | |
| 52 | + { 1808, 1, 22 }, | |
| 53 | + { 1824, 1, 31 }, | |
| 54 | + { 512, 4096, 40 }, | |
| 55 | + { 256, 4112, 42 }, | |
| 56 | + { 8688, 1024, 51 }, | |
| 57 | + { 8704, 512, 60 }, | |
| 58 | + { 16880, 1, 60 }, | |
| 59 | + { 16896, 1, 0 }, | |
| 60 | +}; | |
| 61 | + | |
| 62 | +static const struct { | |
| 63 | + int width; | |
| 64 | + int height; | |
| 65 | + int dpb_size; | |
| 66 | + int level_idc; | |
| 67 | +} test_dpb[] = { | |
| 68 | + // First level usable for some DPB sizes. | |
| 69 | + // (From H.264 table A-7.) | |
| 70 | + { 176, 144, 4, 10 }, | |
| 71 | + { 176, 144, 8, 11 }, | |
| 72 | + { 176, 144, 16, 12 }, | |
| 73 | + { 1280, 720, 1, 31 }, | |
| 74 | + { 1280, 720, 5, 31 }, | |
| 75 | + { 1280, 720, 9, 40 }, | |
| 76 | + { 1280, 720, 10, 50 }, | |
| 77 | + { 1920, 1080, 1, 40 }, | |
| 78 | + { 1920, 1080, 5, 50 }, | |
| 79 | + { 1920, 1080, 13, 50 }, | |
| 80 | + { 1920, 1080, 14, 51 }, | |
| 81 | + { 3840, 2160, 5, 51 }, | |
| 82 | + { 3840, 2160, 6, 60 }, | |
| 83 | + { 3840, 2160, 16, 60 }, | |
| 84 | + { 7680, 4320, 5, 60 }, | |
| 85 | + { 7680, 4320, 6, 0 }, | |
| 86 | +}; | |
| 87 | + | |
| 88 | +static const struct { | |
| 89 | + int64_t bitrate; | |
| 90 | + int profile_idc; | |
| 91 | + int level_idc; | |
| 92 | +} test_bitrate[] = { | |
| 93 | + // Values where profile affects level at a given bitrate. | |
| 94 | + { 2500000, 77, 21 }, | |
| 95 | + { 2500000, 100, 20 }, | |
| 96 | + { 2500000, 244, 13 }, | |
| 97 | + { 100000000, 77, 50 }, | |
| 98 | + { 100000000, 100, 50 }, | |
| 99 | + { 100000000, 244, 41 }, | |
| 100 | + { 999999999, 77, 0 }, | |
| 101 | + { 999999999, 100, 62 }, | |
| 102 | + // Check level 1b. | |
| 103 | + { 32 * 1200, 66, 10 }, | |
| 104 | + { 32 * 1500, 100, 10 }, | |
| 105 | + { 96 * 1200, 66, 10 }, | |
| 106 | + { 96 * 1500, 100, 9 }, | |
| 107 | + { 144 * 1200, 66, 11 }, | |
| 108 | + { 144 * 1500, 100, 11 }, | |
| 109 | +}; | |
| 110 | + | |
| 111 | +static const struct { | |
| 112 | + const char *name; | |
| 113 | + int profile_idc; | |
| 114 | + int64_t bitrate; | |
| 115 | + int width; | |
| 116 | + int height; | |
| 117 | + int dpb_frames; | |
| 118 | + int level_idc; | |
| 119 | +} test_all[] = { | |
| 120 | + { "Bluray 1080p 40Mb/s", 100, 40000000, 1920, 1080, 4, 41 }, | |
| 121 | + { "Bluray 1080p 24Mb/s", 100, 24000000, 1920, 1080, 4, 40 }, | |
| 122 | + { "Bluray 720p 40Mb/s", 100, 40000000, 1280, 720, 6, 41 }, | |
| 123 | + { "Bluray 720p 24Mb/s", 100, 24000000, 1280, 720, 6, 40 }, | |
| 124 | + { "Bluray PAL 40Mb/s", 100, 40000000, 720, 576, 6, 41 }, | |
| 125 | + { "Bluray PAL 24Mb/s", 100, 24000000, 720, 576, 6, 32 }, | |
| 126 | + { "Bluray PAL 16Mb/s", 100, 16800000, 720, 576, 6, 31 }, | |
| 127 | + { "Bluray PAL 12Mb/s", 100, 12000000, 720, 576, 5, 30 }, | |
| 128 | + { "Bluray NTSC 40Mb/s", 100, 40000000, 720, 480, 6, 41 }, | |
| 129 | + { "Bluray NTSC 24Mb/s", 100, 24000000, 720, 480, 6, 32 }, | |
| 130 | + { "Bluray NTSC 16Mb/s", 100, 16800000, 720, 480, 6, 31 }, | |
| 131 | + { "Bluray NTSC 12Mb/s", 100, 12000000, 720, 480, 6, 30 }, | |
| 132 | +}; | |
| 133 | + | |
| 134 | +int main(void) | |
| 135 | +{ | |
| 136 | + const H264LevelDescriptor *level; | |
| 137 | + int i; | |
| 138 | + | |
| 139 | +#define CHECK(expected, format, ...) do { \ | |
| 140 | + if (expected ? (!level || level->level_idc != expected) \ | |
| 141 | + : !!level) { \ | |
| 142 | + av_log(NULL, AV_LOG_ERROR, "Incorrect level for " \ | |
| 143 | + format ": expected %d, got %d.\n", __VA_ARGS__, \ | |
| 144 | + expected, level ? level->level_idc : -1); \ | |
| 145 | + return 1; \ | |
| 146 | + } \ | |
| 147 | + } while (0) | |
| 148 | + | |
| 149 | + for (i = 0; i < FF_ARRAY_ELEMS(test_sizes); i++) { | |
| 150 | + level = ff_h264_guess_level(0, 0, test_sizes[i].width, | |
| 151 | + test_sizes[i].height, 0); | |
| 152 | + CHECK(test_sizes[i].level_idc, "size %dx%d", | |
| 153 | + test_sizes[i].width, test_sizes[i].height); | |
| 154 | + } | |
| 155 | + | |
| 156 | + for (i = 0; i < FF_ARRAY_ELEMS(test_dpb); i++) { | |
| 157 | + level = ff_h264_guess_level(0, 0, test_dpb[i].width, | |
| 158 | + test_dpb[i].height, | |
| 159 | + test_dpb[i].dpb_size); | |
| 160 | + CHECK(test_dpb[i].level_idc, "size %dx%d dpb %d", | |
| 161 | + test_dpb[i].width, test_dpb[i].height, | |
| 162 | + test_dpb[i].dpb_size); | |
| 163 | + } | |
| 164 | + | |
| 165 | + for (i = 0; i < FF_ARRAY_ELEMS(test_bitrate); i++) { | |
| 166 | + level = ff_h264_guess_level(test_bitrate[i].profile_idc, | |
| 167 | + test_bitrate[i].bitrate, | |
| 168 | + 0, 0, 0); | |
| 169 | + CHECK(test_bitrate[i].level_idc, "bitrate %"PRId64" profile %d", | |
| 170 | + test_bitrate[i].bitrate, test_bitrate[i].profile_idc); | |
| 171 | + } | |
| 172 | + | |
| 173 | + for (i = 0; i < FF_ARRAY_ELEMS(test_all); i++) { | |
| 174 | + level = ff_h264_guess_level(test_all[i].profile_idc, | |
| 175 | + test_all[i].bitrate, | |
| 176 | + test_all[i].width, | |
| 177 | + test_all[i].height, | |
| 178 | + test_all[i].dpb_frames); | |
| 179 | + CHECK(test_all[i].level_idc, "%s", test_all[i].name); | |
| 180 | + } | |
| 181 | + | |
| 182 | + return 0; | |
| 183 | +} | |