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https://github.com/FFmpeg/FFmpeg.git
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4f55e16f2b
As well as accessors plus a function for allocating this struct with extension blocks, Definitions generously taken from quietvoid/dovi_tool, which is assembled as a collection of various patent fragments, as well as output by the official Dolby Vision bitstream verifier tool.
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/*
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* Copyright (c) 2020 Jun Zhao<barryjzhao@tencent.com>
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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 <string.h>
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#include "dovi_meta.h"
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#include "mem.h"
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AVDOVIDecoderConfigurationRecord *av_dovi_alloc(size_t *size)
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{
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AVDOVIDecoderConfigurationRecord *dovi =
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av_mallocz(sizeof(AVDOVIDecoderConfigurationRecord));
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if (!dovi)
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return NULL;
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if (size)
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*size = sizeof(*dovi);
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return dovi;
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}
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typedef struct AVDOVIMetadataInternal {
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AVDOVIMetadata metadata;
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AVDOVIRpuDataHeader header;
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AVDOVIDataMapping mapping;
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AVDOVIColorMetadata color;
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AVDOVIDmData ext_blocks[AV_DOVI_MAX_EXT_BLOCKS];
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} AVDOVIMetadataInternal;
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AVDOVIMetadata *av_dovi_metadata_alloc(size_t *size)
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{
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AVDOVIMetadataInternal *dovi = av_mallocz(sizeof(AVDOVIMetadataInternal));
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if (!dovi)
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return NULL;
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if (size)
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*size = sizeof(*dovi);
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dovi->metadata = (struct AVDOVIMetadata) {
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.header_offset = offsetof(AVDOVIMetadataInternal, header),
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.mapping_offset = offsetof(AVDOVIMetadataInternal, mapping),
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.color_offset = offsetof(AVDOVIMetadataInternal, color),
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.ext_block_offset = offsetof(AVDOVIMetadataInternal, ext_blocks),
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.ext_block_size = sizeof(AVDOVIDmData),
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};
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return &dovi->metadata;
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}
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AVDOVIDmData *av_dovi_find_level(const AVDOVIMetadata *data, uint8_t level)
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{
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for (int i = 0; i < data->num_ext_blocks; i++) {
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AVDOVIDmData *ext = av_dovi_get_ext(data, i);
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if (ext->level == level)
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return ext;
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}
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return NULL;
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}
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