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Sunshine/third-party/cbs/video_levels.c
loki 9e7ecf8db2 Allow replacement of hevc headers
2021-06-20 15:29:51 +02:00

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/*
* 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 <libavcodec/avcodec.h>
#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;
}
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