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/*
* Dolby Vision RPU decoder
*
* Copyright (C) 2021 Jan Ekström
* Copyright (C) 2021 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
*/
#ifndef AVCODEC_DOVI_RPU_H
#define AVCODEC_DOVI_RPU_H
#include "libavutil/dovi_meta.h"
#include "libavutil/frame.h"
#define DOVI_MAX_DM_ID 15
typedef struct DOVIContext {
void *logctx;
/**
* Currently active RPU data header, updates on every dovi_rpu_parse().
*/
AVDOVIRpuDataHeader header;
/**
* Currently active data mappings, or NULL. Points into memory owned by the
* corresponding rpu/vdr_ref, which becomes invalid on the next call to
* dovi_rpu_parse.
*/
const AVDOVIDataMapping *mapping;
const AVDOVIColorMetadata *color;
/**
* Currently active extension blocks, updates on every ff_dovi_rpu_parse()
*/
AVDOVIDmData *ext_blocks;
int num_ext_blocks;
/**
* Private fields internal to dovi_rpu.c
*/
struct DOVIVdr *vdr[DOVI_MAX_DM_ID+1]; ///< RefStruct references
uint8_t *rpu_buf; ///< temporary buffer
unsigned rpu_buf_sz;
uint8_t dv_profile;
} DOVIContext;
void ff_dovi_ctx_replace(DOVIContext *s, const DOVIContext *s0);
/**
* Completely reset a DOVIContext, preserving only logctx.
*/
void ff_dovi_ctx_unref(DOVIContext *s);
/**
* Partially reset the internal state. Resets per-frame state while preserving
* fields parsed from the configuration record.
*/
void ff_dovi_ctx_flush(DOVIContext *s);
/**
* Read the contents of an AVDOVIDecoderConfigurationRecord (usually provided
* by stream side data) and update internal state accordingly.
*/
void ff_dovi_update_cfg(DOVIContext *s, const AVDOVIDecoderConfigurationRecord *cfg);
/**
* Parse the contents of a Dovi RPU NAL and update the parsed values in the
* DOVIContext struct.
*
* Returns 0 or an error code.
*/
int ff_dovi_rpu_parse(DOVIContext *s, const uint8_t *rpu, size_t rpu_size,
int err_recognition);
/**
* Attach the decoded AVDOVIMetadata as side data to an AVFrame.
*/
int ff_dovi_attach_side_data(DOVIContext *s, AVFrame *frame);
#endif /* AVCODEC_DOVI_RPU_H */
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