mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-25 00:32:31 +00:00
743 lines
27 KiB
C
743 lines
27 KiB
C
/*
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* Dolby Vision RPU decoder
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*
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* Copyright (C) 2021 Jan Ekström
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* Copyright (C) 2021-2024 Niklas Haas
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*
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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 "libavutil/mem.h"
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#include "libavutil/crc.h"
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#include "avcodec.h"
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#include "dovi_rpu.h"
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#include "golomb.h"
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#include "get_bits.h"
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#include "refstruct.h"
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int ff_dovi_get_metadata(DOVIContext *s, AVDOVIMetadata **out_metadata)
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{
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AVDOVIMetadata *dovi;
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size_t dovi_size;
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if (!s->mapping || !s->color)
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return 0; /* incomplete dovi metadata */
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dovi = av_dovi_metadata_alloc(&dovi_size);
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if (!dovi)
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return AVERROR(ENOMEM);
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/* Copy only the parts of these structs known to us at compiler-time. */
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#define COPY(t, a, b, last) memcpy(a, b, offsetof(t, last) + sizeof((b)->last))
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COPY(AVDOVIRpuDataHeader, av_dovi_get_header(dovi), &s->header, ext_mapping_idc_5_7);
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COPY(AVDOVIDataMapping, av_dovi_get_mapping(dovi), s->mapping, nlq_pivots);
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COPY(AVDOVIColorMetadata, av_dovi_get_color(dovi), s->color, source_diagonal);
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if (s->ext_blocks) {
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const DOVIExt *ext = s->ext_blocks;
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size_t ext_sz = FFMIN(sizeof(AVDOVIDmData), dovi->ext_block_size);
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for (int i = 0; i < ext->num_static; i++)
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memcpy(av_dovi_get_ext(dovi, dovi->num_ext_blocks++), &ext->dm_static[i], ext_sz);
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for (int i = 0; i < ext->num_dynamic; i++)
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memcpy(av_dovi_get_ext(dovi, dovi->num_ext_blocks++), &ext->dm_dynamic[i], ext_sz);
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}
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*out_metadata = dovi;
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return dovi_size;
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}
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int ff_dovi_attach_side_data(DOVIContext *s, AVFrame *frame)
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{
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AVFrameSideData *sd;
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AVDOVIMetadata *dovi;
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AVBufferRef *buf;
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int size;
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size = ff_dovi_get_metadata(s, &dovi);
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if (size <= 0)
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return size;
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buf = av_buffer_create((uint8_t *) dovi, size, NULL, NULL, 0);
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if (!buf) {
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av_free(dovi);
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return AVERROR(ENOMEM);
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}
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sd = av_frame_new_side_data_from_buf(frame, AV_FRAME_DATA_DOVI_METADATA, buf);
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if (!sd) {
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av_buffer_unref(&buf);
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static inline uint64_t get_ue_coef(GetBitContext *gb, const AVDOVIRpuDataHeader *hdr)
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{
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uint64_t ipart;
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union { uint32_t u32; float f32; } fpart;
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switch (hdr->coef_data_type) {
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case RPU_COEFF_FIXED:
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ipart = get_ue_golomb_long(gb);
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fpart.u32 = get_bits_long(gb, hdr->coef_log2_denom);
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return (ipart << hdr->coef_log2_denom) | fpart.u32;
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case RPU_COEFF_FLOAT:
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fpart.u32 = get_bits_long(gb, 32);
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return fpart.f32 * (1LL << hdr->coef_log2_denom);
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}
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return 0; /* unreachable */
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}
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static inline int64_t get_se_coef(GetBitContext *gb, const AVDOVIRpuDataHeader *hdr)
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{
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int64_t ipart;
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union { uint32_t u32; float f32; } fpart;
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switch (hdr->coef_data_type) {
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case RPU_COEFF_FIXED:
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ipart = get_se_golomb_long(gb);
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fpart.u32 = get_bits_long(gb, hdr->coef_log2_denom);
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return ipart * (1LL << hdr->coef_log2_denom) | fpart.u32;
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case RPU_COEFF_FLOAT:
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fpart.u32 = get_bits_long(gb, 32);
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return fpart.f32 * (1LL << hdr->coef_log2_denom);
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}
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return 0; /* unreachable */
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}
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static inline unsigned get_variable_bits(GetBitContext *gb, int n)
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{
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unsigned int value = get_bits(gb, n);
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int read_more = get_bits1(gb);
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while (read_more) {
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value = (value + 1) << n;
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value |= get_bits(gb, n);
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read_more = get_bits1(gb);
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}
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return value;
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}
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#define VALIDATE(VAR, MIN, MAX) \
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do { \
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if (VAR < MIN || VAR > MAX) { \
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av_log(s->logctx, AV_LOG_ERROR, "RPU validation failed: " \
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#MIN" <= "#VAR" = %d <= "#MAX"\n", (int) VAR); \
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ff_dovi_ctx_unref(s); \
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return AVERROR_INVALIDDATA; \
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} \
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} while (0)
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static int parse_ext_v1(DOVIContext *s, GetBitContext *gb, AVDOVIDmData *dm)
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{
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switch (dm->level) {
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case 1:
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dm->l1.min_pq = get_bits(gb, 12);
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dm->l1.max_pq = get_bits(gb, 12);
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dm->l1.avg_pq = get_bits(gb, 12);
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break;
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case 2:
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dm->l2.target_max_pq = get_bits(gb, 12);
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dm->l2.trim_slope = get_bits(gb, 12);
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dm->l2.trim_offset = get_bits(gb, 12);
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dm->l2.trim_power = get_bits(gb, 12);
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dm->l2.trim_chroma_weight = get_bits(gb, 12);
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dm->l2.trim_saturation_gain = get_bits(gb, 12);
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dm->l2.ms_weight = get_sbits(gb, 13);
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VALIDATE(dm->l2.ms_weight, -1, 4095);
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break;
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case 4:
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dm->l4.anchor_pq = get_bits(gb, 12);
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dm->l4.anchor_power = get_bits(gb, 12);
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break;
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case 5:
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dm->l5.left_offset = get_bits(gb, 13);
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dm->l5.right_offset = get_bits(gb, 13);
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dm->l5.top_offset = get_bits(gb, 13);
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dm->l5.bottom_offset = get_bits(gb, 13);
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break;
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case 6:
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dm->l6.max_luminance = get_bits(gb, 16);
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dm->l6.min_luminance = get_bits(gb, 16);
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dm->l6.max_cll = get_bits(gb, 16);
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dm->l6.max_fall = get_bits(gb, 16);
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break;
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case 255:
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dm->l255.dm_run_mode = get_bits(gb, 8);
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dm->l255.dm_run_version = get_bits(gb, 8);
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for (int i = 0; i < 4; i++)
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dm->l255.dm_debug[i] = get_bits(gb, 8);
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break;
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default:
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av_log(s->logctx, AV_LOG_WARNING,
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"Unknown Dolby Vision DM v1 level: %u\n", dm->level);
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}
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return 0;
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}
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static AVCIExy get_cie_xy(GetBitContext *gb)
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{
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AVCIExy xy;
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const int denom = 32767;
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xy.x = av_make_q(get_sbits(gb, 16), denom);
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xy.y = av_make_q(get_sbits(gb, 16), denom);
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return xy;
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}
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static int parse_ext_v2(DOVIContext *s, GetBitContext *gb, AVDOVIDmData *dm,
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int ext_block_length)
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{
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switch (dm->level) {
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case 3:
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dm->l3.min_pq_offset = get_bits(gb, 12);
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dm->l3.max_pq_offset = get_bits(gb, 12);
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dm->l3.avg_pq_offset = get_bits(gb, 12);
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break;
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case 8:
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dm->l8.target_display_index = get_bits(gb, 8);
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dm->l8.trim_slope = get_bits(gb, 12);
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dm->l8.trim_offset = get_bits(gb, 12);
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dm->l8.trim_power = get_bits(gb, 12);
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dm->l8.trim_chroma_weight = get_bits(gb, 12);
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dm->l8.trim_saturation_gain = get_bits(gb, 12);
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dm->l8.ms_weight = get_bits(gb, 12);
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if (ext_block_length < 12)
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break;
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dm->l8.target_mid_contrast = get_bits(gb, 12);
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if (ext_block_length < 13)
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break;
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dm->l8.clip_trim = get_bits(gb, 12);
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if (ext_block_length < 19)
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break;
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for (int i = 0; i < 6; i++)
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dm->l8.saturation_vector_field[i] = get_bits(gb, 8);
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if (ext_block_length < 25)
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break;
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for (int i = 0; i < 6; i++)
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dm->l8.hue_vector_field[i] = get_bits(gb, 8);
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break;
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case 9:
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dm->l9.source_primary_index = get_bits(gb, 8);
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if (ext_block_length < 17)
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break;
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dm->l9.source_display_primaries.prim.r = get_cie_xy(gb);
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dm->l9.source_display_primaries.prim.g = get_cie_xy(gb);
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dm->l9.source_display_primaries.prim.b = get_cie_xy(gb);
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dm->l9.source_display_primaries.wp = get_cie_xy(gb);
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break;
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case 10:
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dm->l10.target_display_index = get_bits(gb, 8);
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dm->l10.target_max_pq = get_bits(gb, 12);
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dm->l10.target_min_pq = get_bits(gb, 12);
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dm->l10.target_primary_index = get_bits(gb, 8);
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if (ext_block_length < 21)
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break;
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dm->l10.target_display_primaries.prim.r = get_cie_xy(gb);
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dm->l10.target_display_primaries.prim.g = get_cie_xy(gb);
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dm->l10.target_display_primaries.prim.b = get_cie_xy(gb);
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dm->l10.target_display_primaries.wp = get_cie_xy(gb);
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break;
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case 11:
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dm->l11.content_type = get_bits(gb, 8);
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dm->l11.whitepoint = get_bits(gb, 4);
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dm->l11.reference_mode_flag = get_bits1(gb);
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skip_bits(gb, 3); /* reserved */
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dm->l11.sharpness = get_bits(gb, 2);
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dm->l11.noise_reduction = get_bits(gb, 2);
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dm->l11.mpeg_noise_reduction = get_bits(gb, 2);
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dm->l11.frame_rate_conversion = get_bits(gb, 2);
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dm->l11.brightness = get_bits(gb, 2);
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dm->l11.color = get_bits(gb, 2);
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break;
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case 254:
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dm->l254.dm_mode = get_bits(gb, 8);
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dm->l254.dm_version_index = get_bits(gb, 8);
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break;
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default:
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av_log(s->logctx, AV_LOG_WARNING,
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"Unknown Dolby Vision DM v2 level: %u\n", dm->level);
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}
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return 0;
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}
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static int parse_ext_blocks(DOVIContext *s, GetBitContext *gb, int ver,
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int compression, int err_recognition)
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{
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int num_ext_blocks, ext_block_length, start_pos, parsed_bits, ret;
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DOVIExt *ext = s->ext_blocks;
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num_ext_blocks = get_ue_golomb_31(gb);
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align_get_bits(gb);
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if (num_ext_blocks && !ext) {
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ext = s->ext_blocks = ff_refstruct_allocz(sizeof(*s->ext_blocks));
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if (!ext)
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return AVERROR(ENOMEM);
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}
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while (num_ext_blocks--) {
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AVDOVIDmData dummy;
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AVDOVIDmData *dm;
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uint8_t level;
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ext_block_length = get_ue_golomb_31(gb);
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level = get_bits(gb, 8);
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start_pos = get_bits_count(gb);
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if (ff_dovi_rpu_extension_is_static(level)) {
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if (compression) {
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av_log(s->logctx, AV_LOG_WARNING, "Compressed DM RPU contains "
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"static extension block level %d\n", level);
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if (err_recognition & (AV_EF_AGGRESSIVE | AV_EF_EXPLODE))
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return AVERROR_INVALIDDATA;
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dm = &dummy;
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} else {
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if (ext->num_static >= FF_ARRAY_ELEMS(ext->dm_static))
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return AVERROR_INVALIDDATA;
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dm = &ext->dm_static[ext->num_static++];
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}
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} else {
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if (ext->num_dynamic >= FF_ARRAY_ELEMS(ext->dm_dynamic))
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return AVERROR_INVALIDDATA;
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dm = &ext->dm_dynamic[ext->num_dynamic++];
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}
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memset(dm, 0, sizeof(*dm));
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dm->level = level;
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switch (ver) {
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case 1: ret = parse_ext_v1(s, gb, dm); break;
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case 2: ret = parse_ext_v2(s, gb, dm, ext_block_length); break;
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default: return AVERROR_BUG;
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}
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if (ret < 0)
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return ret;
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parsed_bits = get_bits_count(gb) - start_pos;
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if (parsed_bits > ext_block_length * 8)
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return AVERROR_INVALIDDATA;
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skip_bits(gb, ext_block_length * 8 - parsed_bits);
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}
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return 0;
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}
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int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size,
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int err_recognition)
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{
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AVDOVIRpuDataHeader *hdr = &s->header;
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GetBitContext *gb = &(GetBitContext){0};
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int ret;
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uint8_t rpu_type;
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uint8_t vdr_seq_info_present;
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uint8_t vdr_dm_metadata_present;
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uint8_t dm_compression = 0;
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uint8_t use_prev_vdr_rpu;
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uint8_t use_nlq;
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uint8_t profile;
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uint8_t compression = s->cfg.dv_profile ? s->cfg.dv_md_compression : 0;
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if (rpu_size < 5)
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return AVERROR_INVALIDDATA;
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/* Container */
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if (s->cfg.dv_profile == 10 /* dav1.10 */) {
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/* DV inside AV1 re-uses an EMDF container skeleton, but with fixed
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* values - so we can effectively treat this as a magic byte sequence.
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*
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* The exact fields are, as follows:
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* emdf_version : f(2) = 0
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* key_id : f(3) = 6
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* emdf_payload_id : f(5) = 31
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* emdf_payload_id_ext : var(5) = 225
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* smploffste : f(1) = 0
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* duratione : f(1) = 0
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* groupide : f(1) = 0
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* codecdatae : f(1) = 0
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* discard_unknown_payload : f(1) = 1
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*/
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const unsigned header_magic = 0x01be6841u;
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unsigned emdf_header, emdf_payload_size, emdf_protection;
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if ((ret = init_get_bits8(gb, rpu, rpu_size)) < 0)
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return ret;
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emdf_header = get_bits_long(gb, 27);
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VALIDATE(emdf_header, header_magic, header_magic);
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emdf_payload_size = get_variable_bits(gb, 8);
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VALIDATE(emdf_payload_size, 6, 512);
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if (emdf_payload_size * 8 > get_bits_left(gb))
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return AVERROR_INVALIDDATA;
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/* The payload is not byte-aligned (off by *one* bit, curse Dolby),
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* so copy into a fresh buffer to preserve byte alignment of the
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* RPU struct */
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av_fast_padded_malloc(&s->rpu_buf, &s->rpu_buf_sz, emdf_payload_size);
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if (!s->rpu_buf)
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return AVERROR(ENOMEM);
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for (int i = 0; i < emdf_payload_size; i++)
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s->rpu_buf[i] = get_bits(gb, 8);
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rpu = s->rpu_buf;
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rpu_size = emdf_payload_size;
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/* Validate EMDF footer */
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emdf_protection = get_bits(gb, 5 + 12);
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VALIDATE(emdf_protection, 0x400, 0x400);
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} else {
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/* NAL unit with prefix and trailing zeroes */
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VALIDATE(rpu[0], 25, 25); /* NAL prefix */
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rpu++;
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rpu_size--;
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/* Strip trailing padding bytes */
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while (rpu_size && rpu[rpu_size - 1] == 0)
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rpu_size--;
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}
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if (!rpu_size || rpu[rpu_size - 1] != 0x80)
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return AVERROR_INVALIDDATA;
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if (err_recognition & AV_EF_CRCCHECK) {
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uint32_t crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
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-1, rpu, rpu_size - 1)); /* exclude 0x80 */
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if (crc) {
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av_log(s->logctx, AV_LOG_ERROR, "RPU CRC mismatch: %X\n", crc);
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if (err_recognition & AV_EF_EXPLODE)
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return AVERROR_INVALIDDATA;
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}
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}
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if ((ret = init_get_bits8(gb, rpu, rpu_size)) < 0)
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return ret;
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/* RPU header */
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rpu_type = get_bits(gb, 6);
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if (rpu_type != 2) {
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av_log(s->logctx, AV_LOG_WARNING, "Unrecognized RPU type "
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"%"PRIu8", ignoring\n", rpu_type);
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return 0;
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}
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hdr->rpu_type = rpu_type;
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hdr->rpu_format = get_bits(gb, 11);
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/* Values specific to RPU type 2 */
|
|
hdr->vdr_rpu_profile = get_bits(gb, 4);
|
|
hdr->vdr_rpu_level = get_bits(gb, 4);
|
|
|
|
vdr_seq_info_present = get_bits1(gb);
|
|
if (vdr_seq_info_present) {
|
|
hdr->chroma_resampling_explicit_filter_flag = get_bits1(gb);
|
|
hdr->coef_data_type = get_bits(gb, 2);
|
|
VALIDATE(hdr->coef_data_type, RPU_COEFF_FIXED, RPU_COEFF_FLOAT);
|
|
switch (hdr->coef_data_type) {
|
|
case RPU_COEFF_FIXED:
|
|
hdr->coef_log2_denom = get_ue_golomb(gb);
|
|
VALIDATE(hdr->coef_log2_denom, 13, 32);
|
|
break;
|
|
case RPU_COEFF_FLOAT:
|
|
hdr->coef_log2_denom = 32; /* arbitrary, choose maximum precision */
|
|
break;
|
|
}
|
|
|
|
hdr->vdr_rpu_normalized_idc = get_bits(gb, 2);
|
|
hdr->bl_video_full_range_flag = get_bits1(gb);
|
|
|
|
if ((hdr->rpu_format & 0x700) == 0) {
|
|
int bl_bit_depth_minus8 = get_ue_golomb_31(gb);
|
|
int el_bit_depth_minus8 = get_ue_golomb_long(gb);
|
|
int vdr_bit_depth_minus8 = get_ue_golomb_31(gb);
|
|
/* ext_mapping_idc is in the upper 8 bits of el_bit_depth_minus8 */
|
|
int ext_mapping_idc = el_bit_depth_minus8 >> 8;
|
|
el_bit_depth_minus8 = el_bit_depth_minus8 & 0xFF;
|
|
VALIDATE(bl_bit_depth_minus8, 0, 8);
|
|
VALIDATE(el_bit_depth_minus8, 0, 8);
|
|
VALIDATE(ext_mapping_idc, 0, 0xFF);
|
|
VALIDATE(vdr_bit_depth_minus8, 0, 8);
|
|
hdr->bl_bit_depth = bl_bit_depth_minus8 + 8;
|
|
hdr->el_bit_depth = el_bit_depth_minus8 + 8;
|
|
hdr->ext_mapping_idc_0_4 = ext_mapping_idc & 0x1f; /* 5 bits */
|
|
hdr->ext_mapping_idc_5_7 = ext_mapping_idc >> 5;
|
|
hdr->vdr_bit_depth = vdr_bit_depth_minus8 + 8;
|
|
hdr->spatial_resampling_filter_flag = get_bits1(gb);
|
|
dm_compression = get_bits(gb, 3);
|
|
hdr->el_spatial_resampling_filter_flag = get_bits1(gb);
|
|
hdr->disable_residual_flag = get_bits1(gb);
|
|
} else {
|
|
avpriv_request_sample(s->logctx, "Unsupported RPU format 0x%x\n", hdr->rpu_format);
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
} else {
|
|
/* lack of documentation/samples */
|
|
avpriv_request_sample(s->logctx, "Missing RPU VDR sequence info\n");
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
vdr_dm_metadata_present = get_bits1(gb);
|
|
if (dm_compression > 1) {
|
|
/* It seems no device supports this */
|
|
av_log(s->logctx, AV_LOG_ERROR, "Dynamic metadata compression is not "
|
|
"yet implemented");
|
|
return AVERROR_PATCHWELCOME;
|
|
} else if (dm_compression && !vdr_dm_metadata_present) {
|
|
av_log(s->logctx, AV_LOG_ERROR, "Nonzero DM metadata compression method "
|
|
"but no DM metadata present");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
use_prev_vdr_rpu = get_bits1(gb);
|
|
use_nlq = (hdr->rpu_format & 0x700) == 0 && !hdr->disable_residual_flag;
|
|
|
|
profile = s->cfg.dv_profile ? s->cfg.dv_profile : ff_dovi_guess_profile_hevc(hdr);
|
|
if (profile == 5 && use_nlq) {
|
|
av_log(s->logctx, AV_LOG_ERROR, "Profile 5 RPUs should not use NLQ\n");
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (err_recognition & (AV_EF_COMPLIANT | AV_EF_CAREFUL)) {
|
|
if (profile < 8 && compression) {
|
|
av_log(s->logctx, AV_LOG_ERROR, "Profile %d RPUs should not use "
|
|
"metadata compression.", profile);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (use_prev_vdr_rpu && !compression) {
|
|
av_log(s->logctx, AV_LOG_ERROR, "Uncompressed RPUs should not have "
|
|
"use_prev_vdr_rpu=1\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (dm_compression && !compression) {
|
|
av_log(s->logctx, AV_LOG_ERROR, "Uncompressed RPUs should not use "
|
|
"dm_compression=%d\n", dm_compression);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
|
|
if (use_prev_vdr_rpu) {
|
|
int prev_vdr_rpu_id = get_ue_golomb_31(gb);
|
|
VALIDATE(prev_vdr_rpu_id, 0, DOVI_MAX_DM_ID);
|
|
if (!s->vdr[prev_vdr_rpu_id])
|
|
prev_vdr_rpu_id = 0;
|
|
if (!s->vdr[prev_vdr_rpu_id]) {
|
|
/* FIXME: Technically, the spec says that in this case we should
|
|
* synthesize "neutral" vdr metadata, but easier to just error
|
|
* out as this corner case is not hit in practice */
|
|
av_log(s->logctx, AV_LOG_ERROR, "Unknown previous RPU ID: %u\n",
|
|
prev_vdr_rpu_id);
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
s->mapping = s->vdr[prev_vdr_rpu_id];
|
|
} else {
|
|
AVDOVIDataMapping *mapping;
|
|
int vdr_rpu_id = get_ue_golomb_31(gb);
|
|
VALIDATE(vdr_rpu_id, 0, DOVI_MAX_DM_ID);
|
|
if (!s->vdr[vdr_rpu_id]) {
|
|
s->vdr[vdr_rpu_id] = ff_refstruct_allocz(sizeof(AVDOVIDataMapping));
|
|
if (!s->vdr[vdr_rpu_id]) {
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
|
|
s->mapping = mapping = s->vdr[vdr_rpu_id];
|
|
mapping->vdr_rpu_id = vdr_rpu_id;
|
|
mapping->mapping_color_space = get_ue_golomb_31(gb);
|
|
mapping->mapping_chroma_format_idc = get_ue_golomb_31(gb);
|
|
|
|
for (int c = 0; c < 3; c++) {
|
|
AVDOVIReshapingCurve *curve = &mapping->curves[c];
|
|
int num_pivots_minus_2 = get_ue_golomb_31(gb);
|
|
int pivot = 0;
|
|
|
|
VALIDATE(num_pivots_minus_2, 0, AV_DOVI_MAX_PIECES - 1);
|
|
curve->num_pivots = num_pivots_minus_2 + 2;
|
|
for (int i = 0; i < curve->num_pivots; i++) {
|
|
pivot += get_bits(gb, hdr->bl_bit_depth);
|
|
curve->pivots[i] = av_clip_uint16(pivot);
|
|
}
|
|
}
|
|
|
|
if (use_nlq) {
|
|
int nlq_pivot = 0;
|
|
mapping->nlq_method_idc = get_bits(gb, 3);
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
nlq_pivot += get_bits(gb, hdr->bl_bit_depth);
|
|
mapping->nlq_pivots[i] = av_clip_uint16(nlq_pivot);
|
|
}
|
|
|
|
/**
|
|
* The patent mentions another legal value, NLQ_MU_LAW, but it's
|
|
* not documented anywhere how to parse or apply that type of NLQ.
|
|
*/
|
|
VALIDATE(mapping->nlq_method_idc, 0, AV_DOVI_NLQ_LINEAR_DZ);
|
|
} else {
|
|
mapping->nlq_method_idc = AV_DOVI_NLQ_NONE;
|
|
}
|
|
|
|
mapping->num_x_partitions = get_ue_golomb_long(gb) + 1;
|
|
mapping->num_y_partitions = get_ue_golomb_long(gb) + 1;
|
|
/* End of rpu_data_header(), start of vdr_rpu_data_payload() */
|
|
|
|
for (int c = 0; c < 3; c++) {
|
|
AVDOVIReshapingCurve *curve = &mapping->curves[c];
|
|
for (int i = 0; i < curve->num_pivots - 1; i++) {
|
|
int mapping_idc = get_ue_golomb_31(gb);
|
|
VALIDATE(mapping_idc, 0, 1);
|
|
curve->mapping_idc[i] = mapping_idc;
|
|
switch (mapping_idc) {
|
|
case AV_DOVI_MAPPING_POLYNOMIAL: {
|
|
int poly_order_minus1 = get_ue_golomb_31(gb);
|
|
VALIDATE(poly_order_minus1, 0, 1);
|
|
curve->poly_order[i] = poly_order_minus1 + 1;
|
|
if (poly_order_minus1 == 0) {
|
|
int linear_interp_flag = get_bits1(gb);
|
|
if (linear_interp_flag) {
|
|
/* lack of documentation/samples */
|
|
avpriv_request_sample(s->logctx, "Dolby Vision "
|
|
"linear interpolation");
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
}
|
|
for (int k = 0; k <= curve->poly_order[i]; k++)
|
|
curve->poly_coef[i][k] = get_se_coef(gb, hdr);
|
|
break;
|
|
}
|
|
case AV_DOVI_MAPPING_MMR: {
|
|
int mmr_order_minus1 = get_bits(gb, 2);
|
|
VALIDATE(mmr_order_minus1, 0, 2);
|
|
curve->mmr_order[i] = mmr_order_minus1 + 1;
|
|
curve->mmr_constant[i] = get_se_coef(gb, hdr);
|
|
for (int j = 0; j < curve->mmr_order[i]; j++) {
|
|
for (int k = 0; k < 7; k++)
|
|
curve->mmr_coef[i][j][k] = get_se_coef(gb, hdr);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (use_nlq) {
|
|
for (int c = 0; c < 3; c++) {
|
|
AVDOVINLQParams *nlq = &mapping->nlq[c];
|
|
nlq->nlq_offset = get_bits(gb, hdr->el_bit_depth);
|
|
nlq->vdr_in_max = get_ue_coef(gb, hdr);
|
|
switch (mapping->nlq_method_idc) {
|
|
case AV_DOVI_NLQ_LINEAR_DZ:
|
|
nlq->linear_deadzone_slope = get_ue_coef(gb, hdr);
|
|
nlq->linear_deadzone_threshold = get_ue_coef(gb, hdr);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (vdr_dm_metadata_present) {
|
|
AVDOVIColorMetadata *color;
|
|
int affected_dm_id = get_ue_golomb_31(gb);
|
|
int current_dm_id = get_ue_golomb_31(gb);
|
|
VALIDATE(affected_dm_id, 0, DOVI_MAX_DM_ID);
|
|
VALIDATE(current_dm_id, 0, DOVI_MAX_DM_ID);
|
|
if (affected_dm_id != current_dm_id) {
|
|
/* The spec does not explain these fields at all, and there is
|
|
* a lack of samples to understand how they're supposed to work,
|
|
* so just assert them being equal for now */
|
|
avpriv_request_sample(s->logctx, "affected/current_dm_metadata_id "
|
|
"mismatch? %u != %u\n", affected_dm_id, current_dm_id);
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if (!s->dm) {
|
|
s->dm = ff_refstruct_allocz(sizeof(AVDOVIColorMetadata));
|
|
if (!s->dm) {
|
|
ff_dovi_ctx_unref(s);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
|
|
s->color = color = s->dm;
|
|
color->dm_metadata_id = affected_dm_id;
|
|
color->scene_refresh_flag = get_ue_golomb_31(gb);
|
|
if (!dm_compression) {
|
|
for (int i = 0; i < 9; i++)
|
|
color->ycc_to_rgb_matrix[i] = av_make_q(get_sbits(gb, 16), 1 << 13);
|
|
for (int i = 0; i < 3; i++) {
|
|
int denom = profile == 4 ? (1 << 30) : (1 << 28);
|
|
unsigned offset = get_bits_long(gb, 32);
|
|
if (offset > INT_MAX) {
|
|
/* Ensure the result fits inside AVRational */
|
|
offset >>= 1;
|
|
denom >>= 1;
|
|
}
|
|
color->ycc_to_rgb_offset[i] = av_make_q(offset, denom);
|
|
}
|
|
for (int i = 0; i < 9; i++)
|
|
color->rgb_to_lms_matrix[i] = av_make_q(get_sbits(gb, 16), 1 << 14);
|
|
|
|
color->signal_eotf = get_bits(gb, 16);
|
|
color->signal_eotf_param0 = get_bits(gb, 16);
|
|
color->signal_eotf_param1 = get_bits(gb, 16);
|
|
color->signal_eotf_param2 = get_bits_long(gb, 32);
|
|
color->signal_bit_depth = get_bits(gb, 5);
|
|
VALIDATE(color->signal_bit_depth, 8, 16);
|
|
color->signal_color_space = get_bits(gb, 2);
|
|
color->signal_chroma_format = get_bits(gb, 2);
|
|
color->signal_full_range_flag = get_bits(gb, 2);
|
|
color->source_min_pq = get_bits(gb, 12);
|
|
color->source_max_pq = get_bits(gb, 12);
|
|
color->source_diagonal = get_bits(gb, 10);
|
|
}
|
|
|
|
/* Parse extension blocks */
|
|
if (s->ext_blocks) {
|
|
DOVIExt *ext = s->ext_blocks;
|
|
if (!dm_compression)
|
|
ext->num_static = 0;
|
|
ext->num_dynamic = 0;
|
|
}
|
|
if ((ret = parse_ext_blocks(s, gb, 1, dm_compression, err_recognition)) < 0) {
|
|
ff_dovi_ctx_unref(s);
|
|
return ret;
|
|
}
|
|
|
|
if (get_bits_left(gb) > 48 /* padding + CRC32 + terminator */) {
|
|
if ((ret = parse_ext_blocks(s, gb, 2, dm_compression, err_recognition)) < 0) {
|
|
ff_dovi_ctx_unref(s);
|
|
return ret;
|
|
}
|
|
}
|
|
} else {
|
|
s->color = &ff_dovi_color_default;
|
|
ff_refstruct_unref(&s->ext_blocks);
|
|
}
|
|
|
|
return 0;
|
|
}
|