libavformat/riff.h

   1 /*
   2  * RIFF common functions and data
   3  * copyright (c) 2000 Fabrice Bellard
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav 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.
  11  *
  12  * Libav 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.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with Libav; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file
  24  * internal header for RIFF based (de)muxers
  25  * do NOT include this in end user applications
  26  */
  27
  28 #ifndef AVFORMAT_RIFF_H
  29 #define AVFORMAT_RIFF_H
  30
  31 #include "libavcodec/avcodec.h"
  32 #include "avio.h"
  33 #include "internal.h"
  34 #include "metadata.h"
  35
  36 extern const AVMetadataConv ff_riff_info_conv[];
  37 extern const char ff_riff_tags[][5];
  38
  39 int64_t ff_start_tag(AVIOContext *pb, const char *tag);
  40 void ff_end_tag(AVIOContext *pb, int64_t start);
  41
  42 /**
  43  * Read BITMAPINFOHEADER structure and set AVStream codec width, height and
  44  * bits_per_encoded_sample fields. Does not read extradata.
  45  * @return codec tag
  46  */
  47 int ff_get_bmp_header(AVIOContext *pb, AVStream *st);
  48
  49 void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf);
  50 int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc);
  51 enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps);
  52 int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);
  53
  54 extern const AVCodecTag ff_codec_bmp_tags[];
  55 extern const AVCodecTag ff_codec_wav_tags[];
  56
  57 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale);
  58
  59 int ff_read_riff_info(AVFormatContext *s, int64_t size);
  60
  61 /**
  62  * Write all recognized RIFF tags from s->metadata
  63  */
  64 void ff_riff_write_info(AVFormatContext *s);
  65
  66 /**
  67  * Write a single RIFF info tag
  68  */
  69 void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str);
  70
  71 #endif /* AVFORMAT_RIFF_H */