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FFmpeg/libavformat/riff.h

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  1. /*

  2.  * RIFF codec tags

  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. 

  35. int64_t ff_start_tag(AVIOContext *pb, const char *tag);

  36. void ff_end_tag(AVIOContext *pb, int64_t start);

  37. 

  38. /**

  39.  * Read BITMAPINFOHEADER structure and set AVStream codec width, height and

  40.  * bits_per_encoded_sample fields. Does not read extradata.

  41.  * @return codec tag

  42.  */

  43. int ff_get_bmp_header(AVIOContext *pb, AVStream *st);

  44. 

  45. void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf);

  46. int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc);

  47. enum CodecID ff_wav_codec_get_id(unsigned int tag, int bps);

  48. int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);

  49. 

  50. extern const AVCodecTag ff_codec_bmp_tags[];

  51. extern const AVCodecTag ff_codec_wav_tags[];

  52. 

  53. unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id);

  54. enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag);

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

  56. 

  57. #endif /* AVFORMAT_RIFF_H */