2 * RIFF common functions and data
3 * copyright (c) 2000 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * internal header for RIFF based (de)muxers
25 * do NOT include this in end user applications
28 #ifndef AVFORMAT_RIFF_H
29 #define AVFORMAT_RIFF_H
31 #include "libavcodec/avcodec.h"
36 extern const AVMetadataConv ff_riff_info_conv[];
38 int64_t ff_start_tag(AVIOContext *pb, const char *tag);
39 void ff_end_tag(AVIOContext *pb, int64_t start);
42 * Read BITMAPINFOHEADER structure and set AVStream codec width, height and
43 * bits_per_encoded_sample fields. Does not read extradata.
46 int ff_get_bmp_header(AVIOContext *pb, AVStream *st, unsigned *esize);
48 void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf, int ignore_extradata);
51 * Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
53 #define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX 0x00000001
56 * Write WAVEFORMAT header structure.
58 * @param flags a combination of FF_PUT_WAV_HEADER_* constants
60 * @return the size or -1 on error
62 int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc, int flags);
64 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
65 int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);
67 extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_riff_video_tags()
68 extern const AVCodecTag ff_codec_wav_tags[];
70 void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale);
72 int ff_read_riff_info(AVFormatContext *s, int64_t size);
75 * Write all recognized RIFF tags from s->metadata
77 void ff_riff_write_info(AVFormatContext *s);
80 * Write a single RIFF info tag
82 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);
84 typedef uint8_t ff_asf_guid[16];
86 typedef struct AVCodecGuid {
91 extern const AVCodecGuid ff_codec_wav_guids[];
94 "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
96 #define FF_ARG_GUID(g) \
97 g[0], g[1], g[2], g[3], g[4], g[5], g[6], g[7], \
98 g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]
100 #define FF_MEDIASUBTYPE_BASE_GUID \
101 0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71
103 static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
105 return memcmp(g1, g2, sizeof(ff_asf_guid));
108 int ff_get_guid(AVIOContext *s, ff_asf_guid *g);
109 void ff_put_guid(AVIOContext *s, const ff_asf_guid *g);
110 const ff_asf_guid *get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid);
112 enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
114 #endif /* AVFORMAT_RIFF_H */