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250 lines
9.7 KiB
C
250 lines
9.7 KiB
C
/*
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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 "h265_profile_level.h"
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static const H265LevelDescriptor h265_levels[] = {
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// Name CpbFactor-Main MaxSliceSegmentsPerPicture
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// | level_idc | CpbFactor-High MaxLumaSr BrFactor-High
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// | | MaxLumaPs | | | MaxTileRows | BrFactor-Main | MinCr-Main
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// | | | | | | | MaxTileCols | | | MinCr-High
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{ "1", 30, 36864, 350, 0, 16, 1, 1, 552960, 128, 0, 2, 2 },
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{ "2", 60, 122880, 1500, 0, 16, 1, 1, 3686400, 1500, 0, 2, 2 },
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{ "2.1", 63, 245760, 3000, 0, 20, 1, 1, 7372800, 3000, 0, 2, 2 },
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{ "3", 90, 552960, 6000, 0, 30, 2, 2, 16588800, 6000, 0, 2, 2 },
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{ "3.1", 93, 983040, 10000, 0, 40, 3, 3, 33177600, 10000, 0, 2, 2 },
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{ "4", 120, 2228224, 12000, 30000, 75, 5, 5, 66846720, 12000, 30000, 4, 4 },
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{ "4.1", 123, 2228224, 20000, 50000, 75, 5, 5, 133693440, 20000, 50000, 4, 4 },
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{ "5", 150, 8912896, 25000, 100000, 200, 11, 10, 267386880, 25000, 100000, 6, 4 },
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{ "5.1", 153, 8912896, 40000, 160000, 200, 11, 10, 534773760, 40000, 160000, 8, 4 },
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{ "5.2", 156, 8912896, 60000, 240000, 200, 11, 10, 1069547520, 60000, 240000, 8, 4 },
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{ "6", 180, 35651584, 60000, 240000, 600, 22, 20, 1069547520, 60000, 240000, 8, 4 },
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{ "6.1", 183, 35651584, 120000, 480000, 600, 22, 20, 2139095040, 120000, 480000, 8, 4 },
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{ "6.2", 186, 35651584, 240000, 800000, 600, 22, 20, 4278190080, 240000, 800000, 6, 4 },
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};
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static const H265ProfileDescriptor h265_profiles[] = {
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// profile_idc 8bit one-picture
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// HT-profile | 422chroma | lower-bit-rate
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// | 14bit | | 420chroma | | CpbVclFactor MinCrScaleFactor
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// | | 12bit | | | monochrome| | CpbNalFactor |
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// | | | 10bit | | | intra | | | FormatCapabilityFactor
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{ "Monochrome", // | | | | | | | | | |
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4, 0, 2, 1, 1, 1, 1, 1, 1, 0, 0, 1, 667, 733, 1.000, 1.0 },
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{ "Monochrome 12",
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4, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1000, 1100, 1.500, 1.0 },
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{ "Monochrome 16",
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4, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1333, 1467, 2.000, 1.0 },
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{ "Main",
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1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0 },
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{ "Screen-Extended Main",
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9, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.500, 1.0 },
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{ "Main 10",
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2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.875, 1.0 },
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{ "Screen-Extended Main 10",
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9, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.875, 1.0 },
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{ "Main 12",
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4, 0, 2, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1500, 1650, 2.250, 1.0 },
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{ "Main Still Picture",
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3, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0 },
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{ "Main 4:2:2 10",
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4, 0, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1667, 1833, 2.500, 0.5 },
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{ "Main 4:2:2 12",
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4, 0, 2, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
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{ "Main 4:4:4",
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4, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
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{ "High Throughput 4:4:4",
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5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
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{ "Screen-Extended Main 4:4:4",
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9, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
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{ "Screen-Extended High Throughput 4:4:4",
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9, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
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{ "Main 4:4:4 10",
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4, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
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{ "High Throughput 4:4:4 10",
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5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
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{ "Screen-Extended Main 4:4:4 10",
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9, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
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{ "Screen-Extended High Throughput 4:4:4 10",
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9, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
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{ "Main 4:4:4 12",
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4, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3000, 3300, 4.500, 0.5 },
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{ "High Throughput 4:4:4 14",
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5, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5 },
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{ "Screen-Extended High Throughput 4:4:4 14",
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9, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5 },
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{ "Main Intra",
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4, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.500, 1.0 },
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{ "Main 10 Intra",
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4, 0, 2, 1, 1, 0, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.875, 1.0 },
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{ "Main 12 Intra",
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4, 0, 2, 1, 0, 0, 1, 1, 0, 1, 0, 2, 1500, 1650, 2.250, 1.0 },
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{ "Main 4:2:2 10 Intra",
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4, 0, 2, 1, 1, 0, 1, 0, 0, 1, 0, 2, 1667, 1833, 2.500, 0.5 },
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{ "Main 4:2:2 12 Intra",
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4, 0, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5 },
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{ "Main 4:4:4 Intra",
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4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5 },
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{ "Main 4:4:4 10 Intra",
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4, 0, 2, 1, 1, 0, 0, 0, 0, 1, 0, 2, 2500, 2750, 3.750, 0.5 },
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{ "Main 4:4:4 12 Intra",
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4, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 2, 3000, 3300, 4.500, 0.5 },
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{ "Main 4:4:4 16 Intra",
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4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5 },
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{ "Main 4:4:4 Still Picture",
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4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 2000, 2200, 3.000, 0.5 },
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{ "Main 4:4:4 16 Still Picture",
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4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 1, 2, 4000, 4400, 6.000, 0.5 },
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{ "High Throughput 4:4:4 16 Intra",
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5, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5 },
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};
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const H265LevelDescriptor *ff_h265_get_level(int level_idc)
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{
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
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if (h265_levels[i].level_idc == level_idc)
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return &h265_levels[i];
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}
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return NULL;
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}
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const H265ProfileDescriptor *ff_h265_get_profile(const H265RawProfileTierLevel *ptl)
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{
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int i;
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if (ptl->general_profile_space)
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return NULL;
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for (i = 0; i < FF_ARRAY_ELEMS(h265_profiles); i++) {
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const H265ProfileDescriptor *profile = &h265_profiles[i];
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if (ptl->general_profile_idc &&
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ptl->general_profile_idc != profile->profile_idc)
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continue;
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if (!ptl->general_profile_compatibility_flag[profile->profile_idc])
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continue;
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#define check_flag(name) \
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if (profile->name < 2) { \
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if (profile->name != ptl->general_ ## name ## _constraint_flag) \
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continue; \
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}
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check_flag(max_14bit);
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check_flag(max_12bit);
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check_flag(max_10bit);
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check_flag(max_8bit);
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check_flag(max_422chroma);
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check_flag(max_420chroma);
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check_flag(max_monochrome);
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check_flag(intra);
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check_flag(one_picture_only);
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check_flag(lower_bit_rate);
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#undef check_flag
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return profile;
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}
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return NULL;
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}
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const H265LevelDescriptor *ff_h265_guess_level(const H265RawProfileTierLevel *ptl,
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int64_t bitrate,
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int width, int height,
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int slice_segments,
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int tile_rows, int tile_cols,
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int max_dec_pic_buffering)
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{
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const H265ProfileDescriptor *profile;
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int pic_size, lbr_flag, hbr_factor;
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int i;
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if (ptl)
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profile = ff_h265_get_profile(ptl);
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else
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profile = NULL;
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if (!profile) {
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// Default to using multiplication factors for Main profile.
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profile = &h265_profiles[3];
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}
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pic_size = width * height;
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if (ptl)
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lbr_flag = ptl->general_lower_bit_rate_constraint_flag;
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else
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lbr_flag = profile->lower_bit_rate > 0;
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if (profile->profile_idc == 1 || profile->profile_idc == 2) {
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hbr_factor = 1;
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} else if (profile->high_throughput) {
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if (profile->intra)
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hbr_factor = 24 - 12 * lbr_flag;
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else
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hbr_factor = 6;
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} else {
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hbr_factor = 2 - lbr_flag;
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}
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for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
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const H265LevelDescriptor *level = &h265_levels[i];
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int max_br, max_dpb_size;
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if (pic_size > level->max_luma_ps)
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continue;
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if (width * width > 8 * level->max_luma_ps)
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continue;
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if (height * height > 8 * level->max_luma_ps)
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continue;
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if (slice_segments > level->max_slice_segments_per_picture)
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continue;
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if (tile_rows > level->max_tile_rows)
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continue;
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if (tile_cols > level->max_tile_cols)
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continue;
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if (ptl && ptl->general_tier_flag)
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max_br = level->max_br_high;
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else
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max_br = level->max_br_main;
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if (!max_br)
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continue;
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if (bitrate > (int64_t)profile->cpb_nal_factor * hbr_factor * max_br)
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continue;
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if (pic_size < (level->max_luma_ps >> 2))
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max_dpb_size = 16;
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else if (pic_size < (level->max_luma_ps >> 1))
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max_dpb_size = 14;
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else if (pic_size < (3 * level->max_luma_ps >> 2))
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max_dpb_size = 9;
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else
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max_dpb_size = 7;
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if (max_dec_pic_buffering > max_dpb_size)
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continue;
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return level;
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}
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return NULL;
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}
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