/* * 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 "libavutil/common.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 }, }; 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) for (i = 0; i < FF_ARRAY_ELEMS(test_sizes); i++) { level = ff_h264_guess_level(0, 0, 0, test_sizes[i].width, test_sizes[i].height, 0); CHECK(test_sizes[i].level_idc, "size %dx%d", test_sizes[i].width, test_sizes[i].height); } for (i = 0; i < FF_ARRAY_ELEMS(test_framerate); i++) { level = ff_h264_guess_level(0, 0, test_framerate[i].framerate, test_framerate[i].width, test_framerate[i].height, 0); CHECK(test_framerate[i].level_idc, "framerate %d, size %dx%d", test_framerate[i].framerate, test_framerate[i].width, test_framerate[i].height); } for (i = 0; i < FF_ARRAY_ELEMS(test_dpb); i++) { level = ff_h264_guess_level(0, 0, 0, test_dpb[i].width, test_dpb[i].height, test_dpb[i].dpb_size); CHECK(test_dpb[i].level_idc, "size %dx%d dpb %d", test_dpb[i].width, test_dpb[i].height, test_dpb[i].dpb_size); } for (i = 0; i < FF_ARRAY_ELEMS(test_bitrate); i++) { level = ff_h264_guess_level(test_bitrate[i].profile_idc, test_bitrate[i].bitrate, 0, 0, 0, 0); CHECK(test_bitrate[i].level_idc, "bitrate %"PRId64" profile %d", test_bitrate[i].bitrate, test_bitrate[i].profile_idc); } for (i = 0; i < FF_ARRAY_ELEMS(test_all); i++) { level = ff_h264_guess_level(test_all[i].profile_idc, test_all[i].bitrate, 0, test_all[i].width, test_all[i].height, test_all[i].dpb_frames); CHECK(test_all[i].level_idc, "%s", test_all[i].name); } return 0; }