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* RIFF common functions and data
* copyright (c) 2000 Fabrice Bellard
* 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
* 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
* @file
* internal header for RIFF based (de)muxers
* do NOT include this in end user applications
#include "libavcodec/avcodec.h"
#include "avio.h"
#include "internal.h"
#include "metadata.h"
extern const AVMetadataConv ff_riff_info_conv[];
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, unsigned *esize);
void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf, int ignore_extradata);
* Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
* Write WAVEFORMAT header structure.
* @param flags a combination of FF_PUT_WAV_HEADER_* constants
* @return the size or -1 on error
int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc, int flags);
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size, int big_endian);
extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags()
extern const AVCodecTag ff_codec_wav_tags[];
void ff_parse_specific_params(AVStream *st, 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);
typedef uint8_t ff_asf_guid[16];
typedef struct AVCodecGuid {
enum AVCodecID id;
ff_asf_guid guid;
} AVCodecGuid;
extern const AVCodecGuid ff_codec_wav_guids[];
#define FF_PRI_GUID \
"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x " \
#define FF_ARG_GUID(g) \
g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \
g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15],\
g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], \
g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]
0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
return memcmp(g1, g2, sizeof(ff_asf_guid));
int ff_get_guid(AVIOContext *s, ff_asf_guid *g);
void ff_put_guid(AVIOContext *s, const ff_asf_guid *g);
const ff_asf_guid *ff_get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid);
enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
#endif /* AVFORMAT_RIFF_H */