mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/*
|
|
* 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
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @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[];
|
|
|
|
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, AVCodecParameters *par, const AVCodecTag *tags, int for_asf, int ignore_extradata);
|
|
|
|
/**
|
|
* Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
|
|
*/
|
|
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX 0x00000001
|
|
|
|
/**
|
|
* Tell ff_put_wav_header() to write an empty channel mask.
|
|
*/
|
|
#define FF_PUT_WAV_HEADER_SKIP_CHANNELMASK 0x00000002
|
|
|
|
/**
|
|
* 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(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags);
|
|
|
|
enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
|
|
int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, 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 " \
|
|
"{%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]
|
|
|
|
#define FF_MEDIASUBTYPE_BASE_GUID \
|
|
0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
|
|
#define FF_AMBISONIC_BASE_GUID \
|
|
0x21, 0x07, 0xD3, 0x11, 0x86, 0x44, 0xC8, 0xC1, 0xCA, 0x00, 0x00, 0x00
|
|
#define FF_BROKEN_BASE_GUID \
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA
|
|
|
|
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 */
|