chromium/third_party/ffmpeg/libavformat/iamf.h

/*
 * Immersive Audio Model and Formats common helpers and structs
 * Copyright (c) 2023 James Almer <[email protected]>
 *
 * 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 AVFORMAT_IAMF_H
#define AVFORMAT_IAMF_H

#include <stddef.h>
#include <stdint.h>

#include "libavutil/attributes_internal.h"
#include "libavutil/channel_layout.h"
#include "libavutil/iamf.h"
#include "libavcodec/codec_id.h"
#include "libavcodec/codec_par.h"

#define MAX_IAMF_OBU_HEADER_SIZE …

// OBU types (section 3.2).
enum IAMF_OBU_Type { … };

IAMFCodecConfig;

IAMFLayer;

IAMFSubStream;

IAMFAudioElement;

IAMFMixPresentation;

IAMFParamDefinition;

IAMFContext;

enum IAMF_Anchor_Element { … };

enum IAMF_Sound_System { … };

struct IAMFSoundSystemMap { … };

FF_VISIBILITY_PUSH_HIDDEN
extern const AVChannelLayout ff_iamf_scalable_ch_layouts[10];
extern const struct IAMFSoundSystemMap ff_iamf_sound_system_map[13];

static inline IAMFCodecConfig *ff_iamf_get_codec_config(const IAMFContext *c,
                                                        unsigned int codec_config_id)
{ … }

static inline IAMFParamDefinition *ff_iamf_get_param_definition(const IAMFContext *iamf,
                                                                unsigned int parameter_id)
{ … }

void ff_iamf_free_audio_element(IAMFAudioElement **paudio_element);
void ff_iamf_free_mix_presentation(IAMFMixPresentation **pmix_presentation);
void ff_iamf_uninit_context(IAMFContext *c);
FF_VISIBILITY_POP_HIDDEN

#endif /* AVFORMAT_IAMF_H */