1/* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * FFmpeg is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19#include "h265_profile_level.h" 20 21 22static const H265LevelDescriptor h265_levels[] = { 23 // Name CpbFactor-Main MaxSliceSegmentsPerPicture 24 // | level_idc | CpbFactor-High MaxLumaSr BrFactor-High 25 // | | MaxLumaPs | | | MaxTileRows | BrFactor-Main | MinCr-Main 26 // | | | | | | | MaxTileCols | | | MinCr-High 27 { "1", 30, 36864, 350, 0, 16, 1, 1, 552960, 128, 0, 2, 2 }, 28 { "2", 60, 122880, 1500, 0, 16, 1, 1, 3686400, 1500, 0, 2, 2 }, 29 { "2.1", 63, 245760, 3000, 0, 20, 1, 1, 7372800, 3000, 0, 2, 2 }, 30 { "3", 90, 552960, 6000, 0, 30, 2, 2, 16588800, 6000, 0, 2, 2 }, 31 { "3.1", 93, 983040, 10000, 0, 40, 3, 3, 33177600, 10000, 0, 2, 2 }, 32 { "4", 120, 2228224, 12000, 30000, 75, 5, 5, 66846720, 12000, 30000, 4, 4 }, 33 { "4.1", 123, 2228224, 20000, 50000, 75, 5, 5, 133693440, 20000, 50000, 4, 4 }, 34 { "5", 150, 8912896, 25000, 100000, 200, 11, 10, 267386880, 25000, 100000, 6, 4 }, 35 { "5.1", 153, 8912896, 40000, 160000, 200, 11, 10, 534773760, 40000, 160000, 8, 4 }, 36 { "5.2", 156, 8912896, 60000, 240000, 200, 11, 10, 1069547520, 60000, 240000, 8, 4 }, 37 { "6", 180, 35651584, 60000, 240000, 600, 22, 20, 1069547520, 60000, 240000, 8, 4 }, 38 { "6.1", 183, 35651584, 120000, 480000, 600, 22, 20, 2139095040, 120000, 480000, 8, 4 }, 39 { "6.2", 186, 35651584, 240000, 800000, 600, 22, 20, 4278190080, 240000, 800000, 6, 4 }, 40}; 41 42static const H265ProfileDescriptor h265_profiles[] = { 43 // profile_idc 8bit one-picture 44 // HT-profile | 422chroma | lower-bit-rate 45 // | 14bit | | 420chroma | | CpbVclFactor MinCrScaleFactor 46 // | | 12bit | | | monochrome| | CpbNalFactor | maxDpbPicBuf 47 // | | | 10bit | | | intra | | | FormatCapabilityFactor 48 { "Monochrome", // | | | | | | | | | | | 49 4, 0, 2, 1, 1, 1, 1, 1, 1, 0, 0, 1, 667, 733, 1.000, 1.0, 6 }, 50 { "Monochrome 10", 51 4, 0, 2, 1, 1, 0, 1, 1, 1, 0, 0, 1, 833, 917, 1.250, 1.0, 6 }, 52 { "Monochrome 12", 53 4, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1000, 1100, 1.500, 1.0, 6 }, 54 { "Monochrome 16", 55 4, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1333, 1467, 2.000, 1.0, 6 }, 56 { "Main", 57 1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 }, 58 { "Screen-Extended Main", 59 9, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.500, 1.0, 7 }, 60 { "Main 10", 61 2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 0, 2, 1000, 1100, 1.875, 1.0, 6 }, 62 { "Screen-Extended Main 10", 63 9, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.875, 1.0, 7 }, 64 { "Main 12", 65 4, 0, 2, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1500, 1650, 2.250, 1.0, 6 }, 66 { "Main Still Picture", 67 3, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 }, 68 { "Main 10 Still Picture", 69 2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1000, 1100, 1.875, 1.0, 6 }, 70 { "Main 4:2:2 10", 71 4, 0, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1667, 1833, 2.500, 0.5, 6 }, 72 { "Main 4:2:2 12", 73 4, 0, 2, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 }, 74 { "Main 4:4:4", 75 4, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 }, 76 { "High Throughput 4:4:4", 77 5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 }, 78 { "Screen-Extended Main 4:4:4", 79 9, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 }, 80 { "Screen-Extended High Throughput 4:4:4", 81 9, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 }, 82 { "Main 4:4:4 10", 83 4, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 }, 84 { "High Throughput 4:4:4 10", 85 5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 }, 86 { "Screen-Extended Main 4:4:4 10", 87 9, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 }, 88 { "Screen-Extended High Throughput 4:4:4 10", 89 9, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 }, 90 { "Main 4:4:4 12", 91 4, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3000, 3300, 4.500, 0.5, 6 }, 92 { "High Throughput 4:4:4 14", 93 5, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 6 }, 94 { "Screen-Extended High Throughput 4:4:4 14", 95 9, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 7 }, 96 { "Main Intra", 97 4, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.500, 1.0, 6 }, 98 { "Main 10 Intra", 99 4, 0, 2, 1, 1, 0, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.875, 1.0, 6 }, 100 { "Main 12 Intra", 101 4, 0, 2, 1, 0, 0, 1, 1, 0, 1, 0, 2, 1500, 1650, 2.250, 1.0, 6 }, 102 { "Main 4:2:2 10 Intra", 103 4, 0, 2, 1, 1, 0, 1, 0, 0, 1, 0, 2, 1667, 1833, 2.500, 0.5, 6 }, 104 { "Main 4:2:2 12 Intra", 105 4, 0, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 }, 106 { "Main 4:4:4 Intra", 107 4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 }, 108 { "Main 4:4:4 10 Intra", 109 4, 0, 2, 1, 1, 0, 0, 0, 0, 1, 0, 2, 2500, 2750, 3.750, 0.5, 6 }, 110 { "Main 4:4:4 12 Intra", 111 4, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 2, 3000, 3300, 4.500, 0.5, 6 }, 112 { "Main 4:4:4 16 Intra", 113 4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 }, 114 { "Main 4:4:4 Still Picture", 115 4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 2000, 2200, 3.000, 0.5, 6 }, 116 { "Main 4:4:4 16 Still Picture", 117 4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 1, 2, 4000, 4400, 6.000, 0.5, 6 }, 118 { "High Throughput 4:4:4 16 Intra", 119 5, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 }, 120}; 121 122 123const H265ProfileDescriptor *ff_h265_get_profile(const H265RawProfileTierLevel *ptl) 124{ 125 int i; 126 127 if (ptl->general_profile_space) 128 return NULL; 129 130 for (i = 0; i < FF_ARRAY_ELEMS(h265_profiles); i++) { 131 const H265ProfileDescriptor *profile = &h265_profiles[i]; 132 133 if (ptl->general_profile_idc && 134 ptl->general_profile_idc != profile->profile_idc) 135 continue; 136 if (!ptl->general_profile_compatibility_flag[profile->profile_idc]) 137 continue; 138 139#define check_flag(name) \ 140 if (profile->name < 2) { \ 141 if (profile->name != ptl->general_ ## name ## _constraint_flag) \ 142 continue; \ 143 } 144 check_flag(max_14bit); 145 check_flag(max_12bit); 146 check_flag(max_10bit); 147 check_flag(max_8bit); 148 check_flag(max_422chroma); 149 check_flag(max_420chroma); 150 check_flag(max_monochrome); 151 check_flag(intra); 152 check_flag(one_picture_only); 153 check_flag(lower_bit_rate); 154#undef check_flag 155 156 return profile; 157 } 158 159 return NULL; 160} 161 162const H265LevelDescriptor *ff_h265_guess_level(const H265RawProfileTierLevel *ptl, 163 int64_t bitrate, 164 int width, int height, 165 int slice_segments, 166 int tile_rows, int tile_cols, 167 int max_dec_pic_buffering) 168{ 169 const H265ProfileDescriptor *profile; 170 int pic_size, tier_flag, lbr_flag, hbr_factor; 171 int i; 172 173 if (ptl) 174 profile = ff_h265_get_profile(ptl); 175 else 176 profile = NULL; 177 if (!profile) { 178 // Default to using multiplication factors for Main profile. 179 profile = &h265_profiles[4]; 180 } 181 182 pic_size = width * height; 183 184 if (ptl) { 185 tier_flag = ptl->general_tier_flag; 186 lbr_flag = ptl->general_lower_bit_rate_constraint_flag; 187 } else { 188 tier_flag = 0; 189 lbr_flag = profile->lower_bit_rate > 0; 190 } 191 if (profile->profile_idc == 1 || profile->profile_idc == 2) { 192 hbr_factor = 1; 193 } else if (profile->high_throughput) { 194 if (profile->intra) 195 hbr_factor = 24 - 12 * lbr_flag; 196 else 197 hbr_factor = 6; 198 } else { 199 hbr_factor = 2 - lbr_flag; 200 } 201 202 for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) { 203 const H265LevelDescriptor *level = &h265_levels[i]; 204 int max_br, max_dpb_size; 205 206 if (tier_flag && !level->max_br_high) 207 continue; 208 209 if (pic_size > level->max_luma_ps) 210 continue; 211 if (width * width > 8 * level->max_luma_ps) 212 continue; 213 if (height * height > 8 * level->max_luma_ps) 214 continue; 215 216 if (slice_segments > level->max_slice_segments_per_picture) 217 continue; 218 if (tile_rows > level->max_tile_rows) 219 continue; 220 if (tile_cols > level->max_tile_cols) 221 continue; 222 223 if (tier_flag) 224 max_br = level->max_br_high; 225 else 226 max_br = level->max_br_main; 227 if (!max_br) 228 continue; 229 if (bitrate > (int64_t)profile->cpb_nal_factor * hbr_factor * max_br) 230 continue; 231 232 if (pic_size <= (level->max_luma_ps >> 2)) 233 max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf, 16); 234 else if (pic_size <= (level->max_luma_ps >> 1)) 235 max_dpb_size = FFMIN(2 * profile->max_dpb_pic_buf, 16); 236 else if (pic_size <= (3 * level->max_luma_ps >> 2)) 237 max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf / 3, 16); 238 else 239 max_dpb_size = profile->max_dpb_pic_buf; 240 if (max_dec_pic_buffering > max_dpb_size) 241 continue; 242 243 return level; 244 } 245 246 return NULL; 247} 248