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ffmpeg/libavcodec/dovi_rpuenc.c
Niklas Haas 3e1b70383e avcodec/dovi_rpuenc: slightly improve profile autodetection 
In the absence of an RPU header, we can consult the colorspace tags to
make a more informed guess about whether we're looking at profile 5 or
profile 8.
2024-08-16 11:48:02 +02:00

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/*
* Dolby Vision RPU encoder
*
* Copyright (C) 2024 Niklas Haas
*
* 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 "libavutil/avassert.h"
#include "libavutil/crc.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "dovi_rpu.h"
#include "itut35.h"
#include "put_bits.h"
#include "put_golomb.h"
#include "refstruct.h"
static struct {
uint64_t pps; // maximum pixels per second
int width; // maximum width
int main; // maximum bitrate in main tier
int high; // maximum bitrate in high tier
} dv_levels[] = {
[1] = {1280*720*24, 1280, 20, 50},
[2] = {1280*720*30, 1280, 20, 50},
[3] = {1920*1080*24, 1920, 20, 70},
[4] = {1920*1080*30, 2560, 20, 70},
[5] = {1920*1080*60, 3840, 20, 70},
[6] = {3840*2160*24, 3840, 25, 130},
[7] = {3840*2160*30, 3840, 25, 130},
[8] = {3840*2160*48, 3840, 40, 130},
[9] = {3840*2160*60, 3840, 40, 130},
[10] = {3840*2160*120, 3840, 60, 240},
[11] = {3840*2160*120, 7680, 60, 240},
[12] = {7680*4320*60, 7680, 120, 450},
[13] = {7680*4320*120u, 7680, 240, 800},
};
int ff_dovi_configure_ext(DOVIContext *s, AVCodecParameters *codecpar,
const AVDOVIMetadata *metadata,
enum AVDOVICompression compression,
int strict_std_compliance)
{
AVDOVIDecoderConfigurationRecord *cfg;
const AVDOVIRpuDataHeader *hdr = NULL;
int dv_profile, dv_level, bl_compat_id = -1;
size_t cfg_size;
uint64_t pps;
if (!s->enable)
goto skip;
if (metadata)
hdr = av_dovi_get_header(metadata);
if (s->enable == FF_DOVI_AUTOMATIC && !hdr)
goto skip;
if (compression == AV_DOVI_COMPRESSION_RESERVED ||
compression > AV_DOVI_COMPRESSION_EXTENDED)
return AVERROR(EINVAL);
switch (codecpar->codec_id) {
case AV_CODEC_ID_AV1: dv_profile = 10; break;
case AV_CODEC_ID_H264: dv_profile = 9; break;
case AV_CODEC_ID_HEVC:
if (hdr) {
dv_profile = ff_dovi_guess_profile_hevc(hdr);
break;
}
/* This is likely to be proprietary IPTPQc2 */
if (codecpar->color_space == AVCOL_SPC_IPT_C2 ||
(codecpar->color_space == AVCOL_SPC_UNSPECIFIED &&
codecpar->color_trc == AVCOL_TRC_UNSPECIFIED))
dv_profile = 5;
else
dv_profile = 8;
break;
default:
/* No other encoder should be calling this! */
av_assert0(0);
return AVERROR_BUG;
}
if (strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
if (dv_profile == 9) {
if (codecpar->format != AV_PIX_FMT_YUV420P)
dv_profile = 0;
} else {
if (codecpar->format != AV_PIX_FMT_YUV420P10)
dv_profile = 0;
}
}
switch (dv_profile) {
case 4: /* HEVC with enhancement layer */
case 7:
if (s->enable > 0) {
av_log(s->logctx, AV_LOG_ERROR, "Coding of Dolby Vision enhancement "
"layers is currently unsupported.");
return AVERROR_PATCHWELCOME;
} else {
goto skip;
}
case 5: /* HEVC with proprietary IPTPQc2 */
bl_compat_id = 0;
break;
case 10:
/* FIXME: check for proper H.273 tags once those are added */
if (hdr && hdr->bl_video_full_range_flag) {
/* AV1 with proprietary IPTPQc2 */
bl_compat_id = 0;
break;
}
/* fall through */
case 8: /* HEVC (or AV1) with BL compatibility */
if (codecpar->color_space == AVCOL_SPC_BT2020_NCL &&
codecpar->color_primaries == AVCOL_PRI_BT2020 &&
codecpar->color_trc == AVCOL_TRC_SMPTE2084) {
bl_compat_id = 1;
} else if (codecpar->color_space == AVCOL_SPC_BT2020_NCL &&
codecpar->color_primaries == AVCOL_PRI_BT2020 &&
codecpar->color_trc == AVCOL_TRC_ARIB_STD_B67) {
bl_compat_id = 4;
} else if (codecpar->color_space == AVCOL_SPC_BT709 &&
codecpar->color_primaries == AVCOL_PRI_BT709 &&
codecpar->color_trc == AVCOL_TRC_BT709) {
bl_compat_id = 2;
}
}
if (!dv_profile || bl_compat_id < 0) {
if (s->enable > 0) {
av_log(s->logctx, AV_LOG_ERROR, "Dolby Vision enabled, but could "
"not determine profile and compatibility mode. Double-check "
"colorspace and format settings for compatibility?\n");
return AVERROR(EINVAL);
}
goto skip;
}
if (compression != AV_DOVI_COMPRESSION_NONE) {
if (dv_profile < 8 && strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
av_log(s->logctx, AV_LOG_ERROR, "Dolby Vision metadata compression "
"is not permitted for profiles 7 and earlier. (dv_profile: %d, "
"compression: %d)\n", dv_profile, compression);
return AVERROR(EINVAL);
} else if (compression == AV_DOVI_COMPRESSION_EXTENDED &&
strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(s->logctx, AV_LOG_ERROR, "Dolby Vision extended metadata "
"compression is experimental and not supported by "
"devices.");
return AVERROR(EINVAL);
} else if (dv_profile == 8) {
av_log(s->logctx, AV_LOG_WARNING, "Dolby Vision metadata compression "
"for profile 8 is known to be unsupported by many devices, "
"use with caution.\n");
}
}
pps = codecpar->width * codecpar->height;
if (codecpar->framerate.num) {
pps = pps * codecpar->framerate.num / codecpar->framerate.den;
} else {
pps *= 25; /* sanity fallback */
}
dv_level = 0;
for (int i = 1; i < FF_ARRAY_ELEMS(dv_levels); i++) {
if (pps > dv_levels[i].pps)
continue;
if (codecpar->width > dv_levels[i].width)
continue;
/* In theory, we should also test the bitrate when known, and
* distinguish between main and high tier. In practice, just ignore
* the bitrate constraints and hope they work out. This would ideally
* be handled by either the encoder or muxer directly. */
dv_level = i;
break;
}
if (!dv_level) {
if (strict_std_compliance >= FF_COMPLIANCE_STRICT) {
av_log(s->logctx, AV_LOG_ERROR, "Coded PPS (%"PRIu64") and width (%d) "
"exceed Dolby Vision limitations\n", pps, codecpar->width);
return AVERROR(EINVAL);
} else {
av_log(s->logctx, AV_LOG_WARNING, "Coded PPS (%"PRIu64") and width (%d) "
"exceed Dolby Vision limitations. Ignoring, resulting file "
"may be non-conforming.\n", pps, codecpar->width);
dv_level = FF_ARRAY_ELEMS(dv_levels) - 1;
}
}
cfg = av_dovi_alloc(&cfg_size);
if (!cfg)
return AVERROR(ENOMEM);
if (!av_packet_side_data_add(&codecpar->coded_side_data,
&codecpar->nb_coded_side_data,
AV_PKT_DATA_DOVI_CONF, cfg, cfg_size, 0)) {
av_free(cfg);
return AVERROR(ENOMEM);
}
cfg->dv_version_major = 1;
cfg->dv_version_minor = 0;
cfg->dv_profile = dv_profile;
cfg->dv_level = dv_level;
cfg->rpu_present_flag = 1;
cfg->el_present_flag = 0;
cfg->bl_present_flag = 1;
cfg->dv_bl_signal_compatibility_id = bl_compat_id;
cfg->dv_md_compression = compression;
s->cfg = *cfg;
return 0;
skip:
s->cfg = (AVDOVIDecoderConfigurationRecord) {0};
return 0;
}
int ff_dovi_configure(DOVIContext *s, AVCodecContext *avctx)
{
int ret;
const AVFrameSideData *sd;
const AVDOVIMetadata *metadata = NULL;
AVCodecParameters *codecpar = avcodec_parameters_alloc();
if (!codecpar)
return AVERROR(ENOMEM);
ret = avcodec_parameters_from_context(codecpar, avctx);
if (ret < 0)
goto fail;
sd = av_frame_side_data_get(avctx->decoded_side_data,
avctx->nb_decoded_side_data,
AV_FRAME_DATA_DOVI_METADATA);
if (sd)
metadata = (const AVDOVIMetadata *) sd->data;
/* Current encoders cannot handle metadata compression during encoding */
ret = ff_dovi_configure_ext(s, codecpar, metadata, AV_DOVI_COMPRESSION_NONE,
avctx->strict_std_compliance);
if (ret < 0)
goto fail;
ret = avcodec_parameters_to_context(avctx, codecpar);
fail:
avcodec_parameters_free(&codecpar);
return ret;
}
/* Compares only the static DM metadata parts of AVDOVIColorMetadata (excluding
* dm_metadata_id and scene_refresh_flag) */
static int cmp_dm_level0(const AVDOVIColorMetadata *dm1,
const AVDOVIColorMetadata *dm2)
{
int ret;
for (int i = 0; i < FF_ARRAY_ELEMS(dm1->ycc_to_rgb_matrix); i++) {
if ((ret = av_cmp_q(dm1->ycc_to_rgb_matrix[i], dm2->ycc_to_rgb_matrix[i])))
return ret;
}
for (int i = 0; i < FF_ARRAY_ELEMS(dm1->ycc_to_rgb_offset); i++) {
if ((ret = av_cmp_q(dm1->ycc_to_rgb_offset[i], dm2->ycc_to_rgb_offset[i])))
return ret;
}
for (int i = 0; i < FF_ARRAY_ELEMS(dm1->rgb_to_lms_matrix); i++) {
if ((ret = av_cmp_q(dm1->rgb_to_lms_matrix[i], dm2->rgb_to_lms_matrix[i])))
return ret;
}
return memcmp(&dm1->signal_eotf, &dm2->signal_eotf,
sizeof(AVDOVIColorMetadata) -offsetof(AVDOVIColorMetadata, signal_eotf));
}
/* Tries to re-use the static ext blocks. May reorder `ext->dm_static` */
static int try_reuse_ext(DOVIExt *ext, const AVDOVIMetadata *metadata)
{
int i, j, idx = 0;
for (i = 0; i < metadata->num_ext_blocks; i++) {
const AVDOVIDmData *dm = av_dovi_get_ext(metadata, i);
if (!ff_dovi_rpu_extension_is_static(dm->level))
continue;
/* Find the first matching ext block and move it to [idx] */
for (j = idx; j < ext->num_static; j++) {
if (!memcmp(&ext->dm_static[j], dm, sizeof(*dm))) {
if (j != idx)
FFSWAP(AVDOVIDmData, ext->dm_static[j], ext->dm_static[idx]);
idx++;
break;
}
}
if (j == ext->num_static) {
/* Found no matching ext block */
return 0;
}
}
/* If idx is less than ext->num_static, then there are extra unmatched
* ext blocks inside ext->dm_static */
return idx == ext->num_static;
}
static inline void put_ue_coef(PutBitContext *pb, const AVDOVIRpuDataHeader *hdr,
uint64_t coef)
{
union { uint32_t u32; float f32; } fpart;
switch (hdr->coef_data_type) {
case RPU_COEFF_FIXED:
set_ue_golomb(pb, coef >> hdr->coef_log2_denom);
put_bits64(pb, hdr->coef_log2_denom,
coef & ((1LL << hdr->coef_log2_denom) - 1));
break;
case RPU_COEFF_FLOAT:
fpart.f32 = coef / (float) (1LL << hdr->coef_log2_denom);
put_bits64(pb, hdr->coef_log2_denom, fpart.u32);
break;
}
}
static inline void put_se_coef(PutBitContext *pb, const AVDOVIRpuDataHeader *hdr,
uint64_t coef)
{
union { uint32_t u32; float f32; } fpart;
switch (hdr->coef_data_type) {
case RPU_COEFF_FIXED:
set_se_golomb(pb, coef >> hdr->coef_log2_denom);
put_bits64(pb, hdr->coef_log2_denom,
coef & ((1LL << hdr->coef_log2_denom) - 1));
break;
case RPU_COEFF_FLOAT:
fpart.f32 = coef / (float) (1LL << hdr->coef_log2_denom);
put_bits64(pb, hdr->coef_log2_denom, fpart.u32);
break;
}
}
static int av_q2den(AVRational q, int den)
{
if (!q.den || q.den == den)
return q.num;
q = av_mul_q(q, av_make_q(den, 1));
return (q.num + (q.den >> 1)) / q.den;
}
static void generate_ext_v1(PutBitContext *pb, const AVDOVIDmData *dm)
{
int ext_block_length, start_pos, pad_bits;
switch (dm->level) {
case 1: ext_block_length = 5; break;
case 2: ext_block_length = 11; break;
case 4: ext_block_length = 3; break;
case 5: ext_block_length = 7; break;
case 6: ext_block_length = 8; break;
case 255: ext_block_length = 6; break;
default: return;
}
set_ue_golomb(pb, ext_block_length);
put_bits(pb, 8, dm->level);
start_pos = put_bits_count(pb);
switch (dm->level) {
case 1:
put_bits(pb, 12, dm->l1.min_pq);
put_bits(pb, 12, dm->l1.max_pq);
put_bits(pb, 12, dm->l1.avg_pq);
break;
case 2:
put_bits(pb, 12, dm->l2.target_max_pq);
put_bits(pb, 12, dm->l2.trim_slope);
put_bits(pb, 12, dm->l2.trim_offset);
put_bits(pb, 12, dm->l2.trim_power);
put_bits(pb, 12, dm->l2.trim_chroma_weight);
put_bits(pb, 12, dm->l2.trim_saturation_gain);
put_sbits(pb, 13, dm->l2.ms_weight);
break;
case 4:
put_bits(pb, 12, dm->l4.anchor_pq);
put_bits(pb, 12, dm->l4.anchor_power);
break;
case 5:
put_bits(pb, 13, dm->l5.left_offset);
put_bits(pb, 13, dm->l5.right_offset);
put_bits(pb, 13, dm->l5.top_offset);
put_bits(pb, 13, dm->l5.bottom_offset);
break;
case 6:
put_bits(pb, 16, dm->l6.max_luminance);
put_bits(pb, 16, dm->l6.min_luminance);
put_bits(pb, 16, dm->l6.max_cll);
put_bits(pb, 16, dm->l6.max_fall);
break;
case 255:
put_bits(pb, 8, dm->l255.dm_run_mode);
put_bits(pb, 8, dm->l255.dm_run_version);
for (int i = 0; i < 4; i++)
put_bits(pb, 8, dm->l255.dm_debug[i]);
break;
}
pad_bits = ext_block_length * 8 - (put_bits_count(pb) - start_pos);
av_assert1(pad_bits >= 0);
put_bits(pb, pad_bits, 0);
}
static void put_cie_xy(PutBitContext *pb, AVCIExy xy)
{
const int denom = 32767;
put_sbits(pb, 16, av_q2den(xy.x, denom));
put_sbits(pb, 16, av_q2den(xy.y, denom));
}
#define ANY6(arr) (arr[0] || arr[1] || arr[2] || arr[3] || arr[4] || arr[5])
#define ANY_XY(xy) (xy.x.num || xy.y.num)
#define ANY_CSP(csp) (ANY_XY(csp.prim.r) || ANY_XY(csp.prim.g) || \
ANY_XY(csp.prim.b) || ANY_XY(csp.wp))
static void generate_ext_v2(PutBitContext *pb, const AVDOVIDmData *dm)
{
int ext_block_length, start_pos, pad_bits;
switch (dm->level) {
case 3: ext_block_length = 5; break;
case 8:
if (ANY6(dm->l8.hue_vector_field)) {
ext_block_length = 25;
} else if (ANY6(dm->l8.saturation_vector_field)) {
ext_block_length = 19;
} else if (dm->l8.clip_trim) {
ext_block_length = 13;
} else if (dm->l8.target_mid_contrast) {
ext_block_length = 12;
} else {
ext_block_length = 10;
}
break;
case 9:
if (ANY_CSP(dm->l9.source_display_primaries)) {
ext_block_length = 17;
} else {
ext_block_length = 1;
}
break;
case 10:
if (ANY_CSP(dm->l10.target_display_primaries)) {
ext_block_length = 21;
} else {
ext_block_length = 5;
}
break;
case 11: ext_block_length = 4; break;
case 254: ext_block_length = 2; break;
default: return;
}
set_ue_golomb(pb, ext_block_length);
put_bits(pb, 8, dm->level);
start_pos = put_bits_count(pb);
switch (dm->level) {
case 3:
put_bits(pb, 12, dm->l3.min_pq_offset);
put_bits(pb, 12, dm->l3.max_pq_offset);
put_bits(pb, 12, dm->l3.avg_pq_offset);
break;
case 8:
put_bits(pb, 8, dm->l8.target_display_index);
put_bits(pb, 12, dm->l8.trim_slope);
put_bits(pb, 12, dm->l8.trim_offset);
put_bits(pb, 12, dm->l8.trim_power);
put_bits(pb, 12, dm->l8.trim_chroma_weight);
put_bits(pb, 12, dm->l8.trim_saturation_gain);
put_bits(pb, 12, dm->l8.ms_weight);
if (ext_block_length < 12)
break;
put_bits(pb, 12, dm->l8.target_mid_contrast);
if (ext_block_length < 13)
break;
put_bits(pb, 12, dm->l8.clip_trim);
if (ext_block_length < 19)
break;
for (int i = 0; i < 6; i++)
put_bits(pb, 8, dm->l8.saturation_vector_field[i]);
if (ext_block_length < 25)
break;
for (int i = 0; i < 6; i++)
put_bits(pb, 8, dm->l8.hue_vector_field[i]);
break;
case 9:
put_bits(pb, 8, dm->l9.source_primary_index);
if (ext_block_length < 17)
break;
put_cie_xy(pb, dm->l9.source_display_primaries.prim.r);
put_cie_xy(pb, dm->l9.source_display_primaries.prim.g);
put_cie_xy(pb, dm->l9.source_display_primaries.prim.b);
put_cie_xy(pb, dm->l9.source_display_primaries.wp);
break;
case 10:
put_bits(pb, 8, dm->l10.target_display_index);
put_bits(pb, 12, dm->l10.target_max_pq);
put_bits(pb, 12, dm->l10.target_min_pq);
put_bits(pb, 8, dm->l10.target_primary_index);
if (ext_block_length < 21)
break;
put_cie_xy(pb, dm->l10.target_display_primaries.prim.r);
put_cie_xy(pb, dm->l10.target_display_primaries.prim.g);
put_cie_xy(pb, dm->l10.target_display_primaries.prim.b);
put_cie_xy(pb, dm->l10.target_display_primaries.wp);
break;
case 11:
put_bits(pb, 8, dm->l11.content_type);
put_bits(pb, 4, dm->l11.whitepoint);
put_bits(pb, 1, dm->l11.reference_mode_flag);
put_bits(pb, 3, 0); /* reserved */
put_bits(pb, 2, dm->l11.sharpness);
put_bits(pb, 2, dm->l11.noise_reduction);
put_bits(pb, 2, dm->l11.mpeg_noise_reduction);
put_bits(pb, 2, dm->l11.frame_rate_conversion);
put_bits(pb, 2, dm->l11.brightness);
put_bits(pb, 2, dm->l11.color);
break;
case 254:
put_bits(pb, 8, dm->l254.dm_mode);
put_bits(pb, 8, dm->l254.dm_version_index);
break;
}
pad_bits = ext_block_length * 8 - (put_bits_count(pb) - start_pos);
av_assert1(pad_bits >= 0);
put_bits(pb, pad_bits, 0);
}
int ff_dovi_rpu_generate(DOVIContext *s, const AVDOVIMetadata *metadata,
int flags, uint8_t **out_rpu, int *out_size)
{
PutBitContext *pb = &(PutBitContext){0};
const AVDOVIRpuDataHeader *hdr;
const AVDOVIDataMapping *mapping;
const AVDOVIColorMetadata *color;
int vdr_dm_metadata_present, vdr_rpu_id, use_prev_vdr_rpu, profile,
buffer_size, rpu_size, pad, zero_run, dm_compression;
int num_ext_blocks_v1, num_ext_blocks_v2;
int dv_md_compression = s->cfg.dv_md_compression;
uint32_t crc;
uint8_t *dst;
if (!metadata) {
*out_rpu = NULL;
*out_size = 0;
return 0;
}
hdr = av_dovi_get_header(metadata);
mapping = av_dovi_get_mapping(metadata);
color = av_dovi_get_color(metadata);
av_assert0(s->cfg.dv_profile);
if (!(flags & FF_DOVI_COMPRESS_RPU))
dv_md_compression = AV_DOVI_COMPRESSION_NONE;
else if (dv_md_compression == AV_DOVI_COMPRESSION_RESERVED)
return AVERROR(EINVAL);
if (hdr->rpu_type != 2) {
av_log(s->logctx, AV_LOG_ERROR, "Unhandled RPU type %"PRIu8"\n",
hdr->rpu_type);
return AVERROR_INVALIDDATA;
}
if (!(flags & FF_DOVI_COMPRESS_RPU))
dv_md_compression = AV_DOVI_COMPRESSION_NONE;
vdr_rpu_id = mapping->vdr_rpu_id;
use_prev_vdr_rpu = 0;
if (!s->vdr[vdr_rpu_id]) {
s->vdr[vdr_rpu_id] = ff_refstruct_allocz(sizeof(AVDOVIDataMapping));
if (!s->vdr[vdr_rpu_id])
return AVERROR(ENOMEM);
}
switch (dv_md_compression) {
case AV_DOVI_COMPRESSION_LIMITED:
/* Limited metadata compression requires vdr_rpi_id == 0 */
if (vdr_rpu_id != 0)
break;
/* fall through */
case AV_DOVI_COMPRESSION_EXTENDED:
if (s->vdr[vdr_rpu_id])
use_prev_vdr_rpu = !memcmp(s->vdr[vdr_rpu_id], mapping, sizeof(*mapping));
break;
case AV_DOVI_COMPRESSION_RESERVED:
return AVERROR(EINVAL);
}
if (s->cfg.dv_md_compression != AV_DOVI_COMPRESSION_EXTENDED) {
/* Flush VDRs to avoid leaking old state; maintaining multiple VDR
* references requires extended compression */
for (int i = 0; i <= DOVI_MAX_DM_ID; i++) {
if (i != vdr_rpu_id)
ff_refstruct_unref(&s->vdr[i]);
}
}
if (metadata->num_ext_blocks && !s->ext_blocks) {
s->ext_blocks = ff_refstruct_allocz(sizeof(*s->ext_blocks));
if (!s->ext_blocks)
return AVERROR(ENOMEM);
}
vdr_dm_metadata_present = memcmp(color, &ff_dovi_color_default, sizeof(*color));
if (metadata->num_ext_blocks)
vdr_dm_metadata_present = 1;
if (vdr_dm_metadata_present && !s->dm) {
s->dm = ff_refstruct_allocz(sizeof(AVDOVIColorMetadata));
if (!s->dm)
return AVERROR(ENOMEM);
}
dm_compression = 0;
if (dv_md_compression != AV_DOVI_COMPRESSION_NONE) {
if (!cmp_dm_level0(s->dm, color) && try_reuse_ext(s->ext_blocks, metadata))
dm_compression = 1;
}
num_ext_blocks_v1 = num_ext_blocks_v2 = 0;
for (int i = 0; i < metadata->num_ext_blocks; i++) {
const AVDOVIDmData *dm = av_dovi_get_ext(metadata, i);
if (dm_compression && ff_dovi_rpu_extension_is_static(dm->level))
continue;
switch (dm->level) {
case 1:
case 2:
case 4:
case 5:
case 6:
case 255:
num_ext_blocks_v1++;
break;
case 3:
case 8:
case 9:
case 10:
case 11:
case 254:
num_ext_blocks_v2++;
break;
default:
av_log(s->logctx, AV_LOG_ERROR, "Invalid ext block level %d\n",
dm->level);
return AVERROR_INVALIDDATA;
}
}
buffer_size = 12 /* vdr seq info */ + 5 /* CRC32 + terminator */;
buffer_size += num_ext_blocks_v1 * 13;
buffer_size += num_ext_blocks_v2 * 28;
if (!use_prev_vdr_rpu) {
buffer_size += 160;
for (int c = 0; c < 3; c++) {
for (int i = 0; i < mapping->curves[c].num_pivots - 1; i++) {
switch (mapping->curves[c].mapping_idc[i]) {
case AV_DOVI_MAPPING_POLYNOMIAL: buffer_size += 26; break;
case AV_DOVI_MAPPING_MMR: buffer_size += 177; break;
}
}
}
}
if (vdr_dm_metadata_present)
buffer_size += 67;
av_fast_padded_malloc(&s->rpu_buf, &s->rpu_buf_sz, buffer_size);
if (!s->rpu_buf)
return AVERROR(ENOMEM);
init_put_bits(pb, s->rpu_buf, s->rpu_buf_sz);
/* RPU header */
put_bits(pb, 6, hdr->rpu_type);
put_bits(pb, 11, hdr->rpu_format);
put_bits(pb, 4, hdr->vdr_rpu_profile);
put_bits(pb, 4, hdr->vdr_rpu_level);
put_bits(pb, 1, 1); /* vdr_seq_info_present */
put_bits(pb, 1, hdr->chroma_resampling_explicit_filter_flag);
put_bits(pb, 2, hdr->coef_data_type);
if (hdr->coef_data_type == RPU_COEFF_FIXED)
set_ue_golomb(pb, hdr->coef_log2_denom);
put_bits(pb, 2, hdr->vdr_rpu_normalized_idc);
put_bits(pb, 1, hdr->bl_video_full_range_flag);
if ((hdr->rpu_format & 0x700) == 0) {
int ext_mapping_idc = (hdr->ext_mapping_idc_5_7 << 5) | hdr->ext_mapping_idc_0_4;
set_ue_golomb(pb, hdr->bl_bit_depth - 8);
set_ue_golomb(pb, (ext_mapping_idc << 8) | (hdr->el_bit_depth - 8));
set_ue_golomb(pb, hdr->vdr_bit_depth - 8);
put_bits(pb, 1, hdr->spatial_resampling_filter_flag);
put_bits(pb, 3, dm_compression);
put_bits(pb, 1, hdr->el_spatial_resampling_filter_flag);
put_bits(pb, 1, hdr->disable_residual_flag);
}
s->header = *hdr;
put_bits(pb, 1, vdr_dm_metadata_present);
put_bits(pb, 1, use_prev_vdr_rpu);
set_ue_golomb(pb, vdr_rpu_id);
s->mapping = s->vdr[vdr_rpu_id];
profile = s->cfg.dv_profile ? s->cfg.dv_profile : ff_dovi_guess_profile_hevc(hdr);
if (!use_prev_vdr_rpu) {
set_ue_golomb(pb, mapping->mapping_color_space);
set_ue_golomb(pb, mapping->mapping_chroma_format_idc);
for (int c = 0; c < 3; c++) {
const AVDOVIReshapingCurve *curve = &mapping->curves[c];
int prev = 0;
set_ue_golomb(pb, curve->num_pivots - 2);
for (int i = 0; i < curve->num_pivots; i++) {
put_bits(pb, hdr->bl_bit_depth, curve->pivots[i] - prev);
prev = curve->pivots[i];
}
}
if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
put_bits(pb, 3, mapping->nlq_method_idc);
put_bits(pb, hdr->bl_bit_depth, mapping->nlq_pivots[0]);
put_bits(pb, hdr->bl_bit_depth, mapping->nlq_pivots[1] - mapping->nlq_pivots[0]);
}
set_ue_golomb(pb, mapping->num_x_partitions - 1);
set_ue_golomb(pb, mapping->num_y_partitions - 1);
for (int c = 0; c < 3; c++) {
const AVDOVIReshapingCurve *curve = &mapping->curves[c];
for (int i = 0; i < curve->num_pivots - 1; i++) {
set_ue_golomb(pb, curve->mapping_idc[i]);
switch (curve->mapping_idc[i]) {
case AV_DOVI_MAPPING_POLYNOMIAL: {
set_ue_golomb(pb, curve->poly_order[i] - 1);
if (curve->poly_order[i] == 1)
put_bits(pb, 1, 0); /* linear_interp_flag */
for (int k = 0; k <= curve->poly_order[i]; k++)
put_se_coef(pb, hdr, curve->poly_coef[i][k]);
break;
}
case AV_DOVI_MAPPING_MMR: {
put_bits(pb, 2, curve->mmr_order[i] - 1);
put_se_coef(pb, hdr, curve->mmr_constant[i]);
for (int j = 0; j < curve->mmr_order[i]; j++) {
for (int k = 0; k < 7; k++)
put_se_coef(pb, hdr, curve->mmr_coef[i][j][k]);
}
break;
}
}
}
}
if (mapping->nlq_method_idc != AV_DOVI_NLQ_NONE) {
for (int c = 0; c < 3; c++) {
const AVDOVINLQParams *nlq = &mapping->nlq[c];
put_bits(pb, hdr->el_bit_depth, nlq->nlq_offset);
put_ue_coef(pb, hdr, nlq->vdr_in_max);
switch (mapping->nlq_method_idc) {
case AV_DOVI_NLQ_LINEAR_DZ:
put_ue_coef(pb, hdr, nlq->linear_deadzone_slope);
put_ue_coef(pb, hdr, nlq->linear_deadzone_threshold);
break;
}
}
}
memcpy(s->vdr[vdr_rpu_id], mapping, sizeof(*mapping));
}
if (vdr_dm_metadata_present) {
DOVIExt *ext = s->ext_blocks;
const int denom = profile == 4 ? (1 << 30) : (1 << 28);
set_ue_golomb(pb, color->dm_metadata_id); /* affected_dm_id */
set_ue_golomb(pb, color->dm_metadata_id); /* current_dm_id */
set_ue_golomb(pb, color->scene_refresh_flag);
if (!dm_compression) {
for (int i = 0; i < 9; i++)
put_sbits(pb, 16, av_q2den(color->ycc_to_rgb_matrix[i], 1 << 13));
for (int i = 0; i < 3; i++)
put_bits32(pb, av_q2den(color->ycc_to_rgb_offset[i], denom));
for (int i = 0; i < 9; i++)
put_sbits(pb, 16, av_q2den(color->rgb_to_lms_matrix[i], 1 << 14));
put_bits(pb, 16, color->signal_eotf);
put_bits(pb, 16, color->signal_eotf_param0);
put_bits(pb, 16, color->signal_eotf_param1);
put_bits32(pb, color->signal_eotf_param2);
put_bits(pb, 5, color->signal_bit_depth);
put_bits(pb, 2, color->signal_color_space);
put_bits(pb, 2, color->signal_chroma_format);
put_bits(pb, 2, color->signal_full_range_flag);
put_bits(pb, 12, color->source_min_pq);
put_bits(pb, 12, color->source_max_pq);
put_bits(pb, 10, color->source_diagonal);
}
memcpy(s->dm, color, sizeof(*color));
s->color = s->dm;
/* Extension blocks */
set_ue_golomb(pb, num_ext_blocks_v1);
align_put_bits(pb);
for (int i = 0; i < metadata->num_ext_blocks; i++) {
const AVDOVIDmData *dm = av_dovi_get_ext(metadata, i);
if (dm_compression && ff_dovi_rpu_extension_is_static(dm->level))
continue;
generate_ext_v1(pb, dm);
}
if (num_ext_blocks_v2) {
set_ue_golomb(pb, num_ext_blocks_v2);
align_put_bits(pb);
for (int i = 0; i < metadata->num_ext_blocks; i++) {
const AVDOVIDmData *dm = av_dovi_get_ext(metadata, i);
if (dm_compression && ff_dovi_rpu_extension_is_static(dm->level))
continue;
generate_ext_v2(pb, av_dovi_get_ext(metadata, i));
}
}
if (ext) {
size_t ext_sz = FFMIN(sizeof(AVDOVIDmData), metadata->ext_block_size);
ext->num_dynamic = 0;
if (!dm_compression)
ext->num_static = 0;
for (int i = 0; i < metadata->num_ext_blocks; i++) {
const AVDOVIDmData *dm = av_dovi_get_ext(metadata, i);
if (!ff_dovi_rpu_extension_is_static(dm->level))
memcpy(&ext->dm_dynamic[ext->num_dynamic++], dm, ext_sz);
else if (!dm_compression)
memcpy(&ext->dm_static[ext->num_static++], dm, ext_sz);
}
}
} else {
s->color = &ff_dovi_color_default;
ff_refstruct_unref(&s->ext_blocks);
}
flush_put_bits(pb);
crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1,
s->rpu_buf, put_bytes_output(pb)));
put_bits32(pb, crc);
put_bits(pb, 8, 0x80); /* terminator */
flush_put_bits(pb);
rpu_size = put_bytes_output(pb);
if (flags & FF_DOVI_WRAP_T35) {
*out_rpu = av_malloc(rpu_size + 15);
if (!*out_rpu)
return AVERROR(ENOMEM);
init_put_bits(pb, *out_rpu, rpu_size + 15);
put_bits(pb, 8, ITU_T_T35_COUNTRY_CODE_US);
put_bits(pb, 16, ITU_T_T35_PROVIDER_CODE_DOLBY);
put_bits32(pb, 0x800); /* provider_oriented_code */
put_bits(pb, 27, 0x01be6841u); /* fixed EMDF header, see above */
if (rpu_size > 0xFF) {
av_assert2(rpu_size <= 0x10000);
put_bits(pb, 8, (rpu_size >> 8) - 1);
put_bits(pb, 1, 1); /* read_more */
put_bits(pb, 8, rpu_size & 0xFF);
put_bits(pb, 1, 0);
} else {
put_bits(pb, 8, rpu_size);
put_bits(pb, 1, 0);
}
ff_copy_bits(pb, s->rpu_buf, rpu_size * 8);
put_bits(pb, 17, 0x400); /* emdf payload id + emdf_protection */
pad = pb->bit_left & 7;
put_bits(pb, pad, (1 << pad) - 1); /* pad to next byte with 1 bits */
flush_put_bits(pb);
*out_size = put_bytes_output(pb);
return 0;
} else if (flags & FF_DOVI_WRAP_NAL) {
*out_rpu = dst = av_malloc(4 + rpu_size * 3 / 2); /* worst case */
if (!*out_rpu)
return AVERROR(ENOMEM);
*dst++ = 25; /* NAL prefix */
zero_run = 0;
for (int i = 0; i < rpu_size; i++) {
if (zero_run < 2) {
if (s->rpu_buf[i] == 0) {
zero_run++;
} else {
zero_run = 0;
}
} else {
if ((s->rpu_buf[i] & ~3) == 0) {
/* emulation prevention */
*dst++ = 3;
}
zero_run = s->rpu_buf[i] == 0;
}
*dst++ = s->rpu_buf[i];
}
*out_size = dst - *out_rpu;
return 0;
} else {
/* Return intermediate buffer directly */
*out_rpu = s->rpu_buf;
*out_size = rpu_size;
s->rpu_buf = NULL;
s->rpu_buf_sz = 0;
return 0;
}
}
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