FFmpeg/libavformat/riff.h

/*
 * RIFF common functions and data
 * copyright (c) 2000 Fabrice Bellard
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * internal header for RIFF based (de)muxers
 * do NOT include this in end user applications
 */

#ifndef AVFORMAT_RIFF_H
#define AVFORMAT_RIFF_H

#include "libavcodec/avcodec.h"
#include "avio.h"
#include "internal.h"
#include "metadata.h"

extern const AVMetadataConv ff_riff_info_conv[];
extern const char ff_riff_tags[][5];

int64_t ff_start_tag(AVIOContext *pb, const char *tag);
void ff_end_tag(AVIOContext *pb, int64_t start);

/**
 * Read BITMAPINFOHEADER structure and set AVStream codec width, height and
 * bits_per_encoded_sample fields. Does not read extradata.
 * @return codec tag
 */
int ff_get_bmp_header(AVIOContext *pb, AVStream *st);

void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf);
int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc);
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);

extern const AVCodecTag ff_codec_bmp_tags[];
extern const AVCodecTag ff_codec_wav_tags[];

void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale);

int ff_read_riff_info(AVFormatContext *s, int64_t size);

/**
 * Write all recognized RIFF tags from s->metadata
 */
void ff_riff_write_info(AVFormatContext *s);

/**
 * Write a single RIFF info tag
 */
void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);

#endif /* AVFORMAT_RIFF_H */