/* * 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 #include "include/cbs/video_levels.h" // H.264 table A-1. static const H264LevelDescriptor h264_levels[] = { // Name MaxMBPS MaxBR MinCR // | level_idc | MaxFS | MaxCPB | MaxMvsPer2Mb // | | cs3f | | MaxDpbMbs | | MaxVmvR | | { "1", 10, 0, 1485, 99, 396, 64, 175, 64, 2, 0 }, { "1b", 11, 1, 1485, 99, 396, 128, 350, 64, 2, 0 }, { "1b", 9, 0, 1485, 99, 396, 128, 350, 64, 2, 0 }, { "1.1", 11, 0, 3000, 396, 900, 192, 500, 128, 2, 0 }, { "1.2", 12, 0, 6000, 396, 2376, 384, 1000, 128, 2, 0 }, { "1.3", 13, 0, 11880, 396, 2376, 768, 2000, 128, 2, 0 }, { "2", 20, 0, 11880, 396, 2376, 2000, 2000, 128, 2, 0 }, { "2.1", 21, 0, 19800, 792, 4752, 4000, 4000, 256, 2, 0 }, { "2.2", 22, 0, 20250, 1620, 8100, 4000, 4000, 256, 2, 0 }, { "3", 30, 0, 40500, 1620, 8100, 10000, 10000, 256, 2, 32 }, { "3.1", 31, 0, 108000, 3600, 18000, 14000, 14000, 512, 4, 16 }, { "3.2", 32, 0, 216000, 5120, 20480, 20000, 20000, 512, 4, 16 }, { "4", 40, 0, 245760, 8192, 32768, 20000, 25000, 512, 4, 16 }, { "4.1", 41, 0, 245760, 8192, 32768, 50000, 62500, 512, 2, 16 }, { "4.2", 42, 0, 522240, 8704, 34816, 50000, 62500, 512, 2, 16 }, { "5", 50, 0, 589824, 22080, 110400, 135000, 135000, 512, 2, 16 }, { "5.1", 51, 0, 983040, 36864, 184320, 240000, 240000, 512, 2, 16 }, { "5.2", 52, 0, 2073600, 36864, 184320, 240000, 240000, 512, 2, 16 }, { "6", 60, 0, 4177920, 139264, 696320, 240000, 240000, 8192, 2, 16 }, { "6.1", 61, 0, 8355840, 139264, 696320, 480000, 480000, 8192, 2, 16 }, { "6.2", 62, 0, 16711680, 139264, 696320, 800000, 800000, 8192, 2, 16 }, }; // H.264 table A-2 plus values from A-1. static const struct { int profile_idc; int cpb_br_vcl_factor; int cpb_br_nal_factor; } h264_br_factors[] = { { 66, 1000, 1200 }, { 77, 1000, 1200 }, { 88, 1000, 1200 }, { 100, 1250, 1500 }, { 110, 3000, 3600 }, { 122, 4000, 4800 }, { 244, 4000, 4800 }, { 44, 4000, 4800 }, }; // We are only ever interested in the NAL bitrate factor. static int h264_get_br_factor(int profile_idc) { int i; for(i = 0; i < FF_ARRAY_ELEMS(h264_br_factors); i++) { if(h264_br_factors[i].profile_idc == profile_idc) return h264_br_factors[i].cpb_br_nal_factor; } // Default to the non-high profile value if not specified. return 1200; } const H264LevelDescriptor *ff_h264_guess_level(int profile_idc, int64_t bitrate, int framerate, int width, int height, int max_dec_frame_buffering) { int width_mbs = (width + 15) / 16; int height_mbs = (height + 15) / 16; int no_cs3f = !(profile_idc == 66 || profile_idc == 77 || profile_idc == 88); int i; for(i = 0; i < FF_ARRAY_ELEMS(h264_levels); i++) { const H264LevelDescriptor *level = &h264_levels[i]; if(level->constraint_set3_flag && no_cs3f) continue; if(bitrate > (int64_t)level->max_br * h264_get_br_factor(profile_idc)) continue; if(width_mbs * height_mbs > level->max_fs) continue; if(width_mbs * width_mbs > 8 * level->max_fs) continue; if(height_mbs * height_mbs > 8 * level->max_fs) continue; if(width_mbs && height_mbs) { int max_dpb_frames = FFMIN(level->max_dpb_mbs / (width_mbs * height_mbs), 16); if(max_dec_frame_buffering > max_dpb_frames) continue; if(framerate > (level->max_mbps / (width_mbs * height_mbs))) continue; } return level; } // No usable levels found - frame is too big or bitrate is too high. return NULL; } static const H265LevelDescriptor h265_levels[] = { // Name CpbFactor-Main MaxSliceSegmentsPerPicture // | level_idc | CpbFactor-High MaxLumaSr BrFactor-High // | | MaxLumaPs | | | MaxTileRows | BrFactor-Main | MinCr-Main // | | | | | | | MaxTileCols | | | MinCr-High { "1", 30, 36864, 350, 0, 16, 1, 1, 552960, 128, 0, 2, 2 }, { "2", 60, 122880, 1500, 0, 16, 1, 1, 3686400, 1500, 0, 2, 2 }, { "2.1", 63, 245760, 3000, 0, 20, 1, 1, 7372800, 3000, 0, 2, 2 }, { "3", 90, 552960, 6000, 0, 30, 2, 2, 16588800, 6000, 0, 2, 2 }, { "3.1", 93, 983040, 10000, 0, 40, 3, 3, 33177600, 10000, 0, 2, 2 }, { "4", 120, 2228224, 12000, 30000, 75, 5, 5, 66846720, 12000, 30000, 4, 4 }, { "4.1", 123, 2228224, 20000, 50000, 75, 5, 5, 133693440, 20000, 50000, 4, 4 }, { "5", 150, 8912896, 25000, 100000, 200, 11, 10, 267386880, 25000, 100000, 6, 4 }, { "5.1", 153, 8912896, 40000, 160000, 200, 11, 10, 534773760, 40000, 160000, 8, 4 }, { "5.2", 156, 8912896, 60000, 240000, 200, 11, 10, 1069547520, 60000, 240000, 8, 4 }, { "6", 180, 35651584, 60000, 240000, 600, 22, 20, 1069547520, 60000, 240000, 8, 4 }, { "6.1", 183, 35651584, 120000, 480000, 600, 22, 20, 2139095040, 120000, 480000, 8, 4 }, { "6.2", 186, 35651584, 240000, 800000, 600, 22, 20, 4278190080, 240000, 800000, 6, 4 }, }; static const H265ProfileDescriptor h265_profiles[] = { // profile_idc 8bit one-picture // HT-profile | 422chroma | lower-bit-rate // | 14bit | | 420chroma | | CpbVclFactor MinCrScaleFactor // | | 12bit | | | monochrome| | CpbNalFactor | maxDpbPicBuf // | | | 10bit | | | intra | | | FormatCapabilityFactor { "Monochrome", // | | | | | | | | | | | 4, 0, 2, 1, 1, 1, 1, 1, 1, 0, 0, 1, 667, 733, 1.000, 1.0, 6 }, { "Monochrome 10", 4, 0, 2, 1, 1, 0, 1, 1, 1, 0, 0, 1, 833, 917, 1.250, 1.0, 6 }, { "Monochrome 12", 4, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1000, 1100, 1.500, 1.0, 6 }, { "Monochrome 16", 4, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1333, 1467, 2.000, 1.0, 6 }, { "Main", 1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 }, { "Screen-Extended Main", 9, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.500, 1.0, 7 }, { "Main 10", 2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 0, 2, 1000, 1100, 1.875, 1.0, 6 }, { "Screen-Extended Main 10", 9, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.875, 1.0, 7 }, { "Main 12", 4, 0, 2, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1500, 1650, 2.250, 1.0, 6 }, { "Main Still Picture", 3, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 }, { "Main 10 Still Picture", 2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1000, 1100, 1.875, 1.0, 6 }, { "Main 4:2:2 10", 4, 0, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1667, 1833, 2.500, 0.5, 6 }, { "Main 4:2:2 12", 4, 0, 2, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 }, { "Main 4:4:4", 4, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 }, { "High Throughput 4:4:4", 5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 }, { "Screen-Extended Main 4:4:4", 9, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 }, { "Screen-Extended High Throughput 4:4:4", 9, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 }, { "Main 4:4:4 10", 4, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 }, { "High Throughput 4:4:4 10", 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 }, { "Screen-Extended Main 4:4:4 10", 9, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 }, { "Screen-Extended High Throughput 4:4:4 10", 9, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 }, { "Main 4:4:4 12", 4, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3000, 3300, 4.500, 0.5, 6 }, { "High Throughput 4:4:4 14", 5, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 6 }, { "Screen-Extended High Throughput 4:4:4 14", 9, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 7 }, { "Main Intra", 4, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.500, 1.0, 6 }, { "Main 10 Intra", 4, 0, 2, 1, 1, 0, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.875, 1.0, 6 }, { "Main 12 Intra", 4, 0, 2, 1, 0, 0, 1, 1, 0, 1, 0, 2, 1500, 1650, 2.250, 1.0, 6 }, { "Main 4:2:2 10 Intra", 4, 0, 2, 1, 1, 0, 1, 0, 0, 1, 0, 2, 1667, 1833, 2.500, 0.5, 6 }, { "Main 4:2:2 12 Intra", 4, 0, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 }, { "Main 4:4:4 Intra", 4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 }, { "Main 4:4:4 10 Intra", 4, 0, 2, 1, 1, 0, 0, 0, 0, 1, 0, 2, 2500, 2750, 3.750, 0.5, 6 }, { "Main 4:4:4 12 Intra", 4, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 2, 3000, 3300, 4.500, 0.5, 6 }, { "Main 4:4:4 16 Intra", 4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 }, { "Main 4:4:4 Still Picture", 4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 2000, 2200, 3.000, 0.5, 6 }, { "Main 4:4:4 16 Still Picture", 4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 1, 2, 4000, 4400, 6.000, 0.5, 6 }, { "High Throughput 4:4:4 16 Intra", 5, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 }, }; const H265ProfileDescriptor *ff_h265_get_profile(const H265RawProfileTierLevel *ptl) { int i; if(ptl->general_profile_space) return NULL; for(i = 0; i < FF_ARRAY_ELEMS(h265_profiles); i++) { const H265ProfileDescriptor *profile = &h265_profiles[i]; if(ptl->general_profile_idc && ptl->general_profile_idc != profile->profile_idc) continue; if(!ptl->general_profile_compatibility_flag[profile->profile_idc]) continue; #define check_flag(name) \ if(profile->name < 2) { \ if(profile->name != ptl->general_##name##_constraint_flag) \ continue; \ } check_flag(max_14bit); check_flag(max_12bit); check_flag(max_10bit); check_flag(max_8bit); check_flag(max_422chroma); check_flag(max_420chroma); check_flag(max_monochrome); check_flag(intra); check_flag(one_picture_only); check_flag(lower_bit_rate); #undef check_flag return profile; } return NULL; } const H265LevelDescriptor *ff_h265_guess_level(const H265RawProfileTierLevel *ptl, int64_t bitrate, int width, int height, int slice_segments, int tile_rows, int tile_cols, int max_dec_pic_buffering) { const H265ProfileDescriptor *profile; int pic_size, tier_flag, lbr_flag, hbr_factor; int i; if(ptl) profile = ff_h265_get_profile(ptl); else profile = NULL; if(!profile) { // Default to using multiplication factors for Main profile. profile = &h265_profiles[4]; } pic_size = width * height; if(ptl) { tier_flag = ptl->general_tier_flag; lbr_flag = ptl->general_lower_bit_rate_constraint_flag; } else { tier_flag = 0; lbr_flag = profile->lower_bit_rate > 0; } if(profile->profile_idc == 1 || profile->profile_idc == 2) { hbr_factor = 1; } else if(profile->high_throughput) { if(profile->intra) hbr_factor = 24 - 12 * lbr_flag; else hbr_factor = 6; } else { hbr_factor = 2 - lbr_flag; } for(i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) { const H265LevelDescriptor *level = &h265_levels[i]; int max_br, max_dpb_size; if(tier_flag && !level->max_br_high) continue; if(pic_size > level->max_luma_ps) continue; if(width * width > 8 * level->max_luma_ps) continue; if(height * height > 8 * level->max_luma_ps) continue; if(slice_segments > level->max_slice_segments_per_picture) continue; if(tile_rows > level->max_tile_rows) continue; if(tile_cols > level->max_tile_cols) continue; if(tier_flag) max_br = level->max_br_high; else max_br = level->max_br_main; if(!max_br) continue; if(bitrate > (int64_t)profile->cpb_nal_factor * hbr_factor * max_br) continue; if(pic_size <= (level->max_luma_ps >> 2)) max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf, 16); else if(pic_size <= (level->max_luma_ps >> 1)) max_dpb_size = FFMIN(2 * profile->max_dpb_pic_buf, 16); else if(pic_size <= (3 * level->max_luma_ps >> 2)) max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf / 3, 16); else max_dpb_size = profile->max_dpb_pic_buf; if(max_dec_pic_buffering > max_dpb_size) continue; return level; } return NULL; }