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