riff.h 2.9 KB

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  1. /*
  2. * RIFF codec tags
  3. * copyright (c) 2000 Fabrice Bellard
  4. *
  5. * This file is part of FFmpeg.
  6. *
  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.
  11. *
  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.
  16. *
  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
  20. */
  21. /**
  22. * @file
  23. * internal header for RIFF based (de)muxers
  24. * do NOT include this in end user applications
  25. */
  26. #ifndef AVFORMAT_RIFF_H
  27. #define AVFORMAT_RIFF_H
  28. #include "libavcodec/avcodec.h"
  29. #include "avio.h"
  30. #include "internal.h"
  31. #include "metadata.h"
  32. extern const AVMetadataConv ff_riff_info_conv[];
  33. extern const char ff_riff_tags[][5];
  34. int64_t ff_start_tag(AVIOContext *pb, const char *tag);
  35. void ff_end_tag(AVIOContext *pb, int64_t start);
  36. /**
  37. * Read BITMAPINFOHEADER structure and set AVStream codec width, height and
  38. * bits_per_encoded_sample fields. Does not read extradata.
  39. * @return codec tag
  40. */
  41. int ff_get_bmp_header(AVIOContext *pb, AVStream *st);
  42. void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf);
  43. int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc);
  44. enum CodecID ff_wav_codec_get_id(unsigned int tag, int bps);
  45. int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size);
  46. extern const AVCodecTag ff_codec_bmp_tags[];
  47. extern const AVCodecTag ff_codec_wav_tags[];
  48. unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id);
  49. enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag);
  50. void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale);
  51. typedef uint8_t ff_asf_guid[16];
  52. int ff_read_riff_info(AVFormatContext *s, int64_t size);
  53. #define FF_PRI_GUID \
  54. "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
  55. #define FF_ARG_GUID(g) \
  56. 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]
  57. static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
  58. {
  59. return memcmp(g1, g2, sizeof(ff_asf_guid));
  60. }
  61. void ff_get_guid(AVIOContext *s, ff_asf_guid *g);
  62. typedef struct {
  63. enum CodecID id;
  64. ff_asf_guid guid;
  65. } AVCodecGuid;
  66. enum CodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid);
  67. extern const AVCodecGuid ff_codec_wav_guids[];
  68. #define FF_MEDIASUBTYPE_BASE_GUID \
  69. 0x00,0x00,0x10,0x00,0x80,0x00,0x00,0xAA,0x00,0x38,0x9B,0x71
  70. #endif /* AVFORMAT_RIFF_H */