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Diffstat (limited to 'libavcodec/h265_profile_level.c')
| -rw-r--r-- | libavcodec/h265_profile_level.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/libavcodec/h265_profile_level.c b/libavcodec/h265_profile_level.c new file mode 100644 index 0000000..6604ca2 --- /dev/null +++ b/libavcodec/h265_profile_level.c @@ -0,0 +1,249 @@ +/* + * 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 "h265_profile_level.h" + + +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 | + // | | | 10bit | | | intra | | | FormatCapabilityFactor + { "Monochrome", // | | | | | | | | | | + 4, 0, 2, 1, 1, 1, 1, 1, 1, 0, 0, 1, 667, 733, 1.000, 1.0 }, + { "Monochrome 12", + 4, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1000, 1100, 1.500, 1.0 }, + { "Monochrome 16", + 4, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1333, 1467, 2.000, 1.0 }, + { "Main", + 1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0 }, + { "Screen-Extended Main", + 9, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.500, 1.0 }, + { "Main 10", + 2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.875, 1.0 }, + { "Screen-Extended Main 10", + 9, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.875, 1.0 }, + { "Main 12", + 4, 0, 2, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1500, 1650, 2.250, 1.0 }, + { "Main Still Picture", + 3, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0 }, + { "Main 4:2:2 10", + 4, 0, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1667, 1833, 2.500, 0.5 }, + { "Main 4:2:2 12", + 4, 0, 2, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 }, + { "Main 4:4:4", + 4, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 }, + { "High Throughput 4:4:4", + 5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 }, + { "Screen-Extended Main 4:4:4", + 9, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 }, + { "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 }, + { "Main 4:4:4 10", + 4, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 }, + { "High Throughput 4:4:4 10", + 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 }, + { "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 }, + { "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 }, + { "Main 4:4:4 12", + 4, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3000, 3300, 4.500, 0.5 }, + { "High Throughput 4:4:4 14", + 5, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5 }, + { "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 }, + { "Main Intra", + 4, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.500, 1.0 }, + { "Main 10 Intra", + 4, 0, 2, 1, 1, 0, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.875, 1.0 }, + { "Main 12 Intra", + 4, 0, 2, 1, 0, 0, 1, 1, 0, 1, 0, 2, 1500, 1650, 2.250, 1.0 }, + { "Main 4:2:2 10 Intra", + 4, 0, 2, 1, 1, 0, 1, 0, 0, 1, 0, 2, 1667, 1833, 2.500, 0.5 }, + { "Main 4:2:2 12 Intra", + 4, 0, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5 }, + { "Main 4:4:4 Intra", + 4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5 }, + { "Main 4:4:4 10 Intra", + 4, 0, 2, 1, 1, 0, 0, 0, 0, 1, 0, 2, 2500, 2750, 3.750, 0.5 }, + { "Main 4:4:4 12 Intra", + 4, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 2, 3000, 3300, 4.500, 0.5 }, + { "Main 4:4:4 16 Intra", + 4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5 }, + { "Main 4:4:4 Still Picture", + 4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 2000, 2200, 3.000, 0.5 }, + { "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 }, + { "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 }, +}; + + +const H265LevelDescriptor *ff_h265_get_level(int level_idc) +{ + int i; + + for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) { + if (h265_levels[i].level_idc == level_idc) + return &h265_levels[i]; + } + + return NULL; +} + +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, 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[3]; + } + + pic_size = width * height; + + if (ptl) + lbr_flag = ptl->general_lower_bit_rate_constraint_flag; + else + 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 (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 (ptl && ptl->general_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 = 16; + else if (pic_size < (level->max_luma_ps >> 1)) + max_dpb_size = 14; + else if (pic_size < (3 * level->max_luma_ps >> 2)) + max_dpb_size = 9; + else + max_dpb_size = 7; + if (max_dec_pic_buffering > max_dpb_size) + continue; + + return level; + } + + return NULL; +} |
