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vorbis_parser.h 2.3KB

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  1. /*
  2. *
  3. * This file is part of FFmpeg.
  4. *
  5. * FFmpeg is free software; you can redistribute it and/or
  6. * modify it under the terms of the GNU Lesser General Public
  7. * License as published by the Free Software Foundation; either
  8. * version 2.1 of the License, or (at your option) any later version.
  9. *
  10. * FFmpeg is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13. * Lesser General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU Lesser General Public
  16. * License along with FFmpeg; if not, write to the Free Software
  17. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18. */
  19. /**
  20. * @file
  21. * A public API for Vorbis parsing
  22. *
  23. * Determines the duration for each packet.
  24. */
  25. #ifndef AVCODEC_VORBIS_PARSE_H
  26. #define AVCODEC_VORBIS_PARSE_H
  27. #include <stdint.h>
  28. typedef struct AVVorbisParseContext AVVorbisParseContext;
  29. /**
  30. * Allocate and initialize the Vorbis parser using headers in the extradata.
  31. *
  32. * @param avctx codec context
  33. * @param s Vorbis parser context
  34. */
  35. AVVorbisParseContext *av_vorbis_parse_init(const uint8_t *extradata,
  36. int extradata_size);
  37. /**
  38. * Free the parser and everything associated with it.
  39. */
  40. void av_vorbis_parse_free(AVVorbisParseContext **s);
  41. #define VORBIS_FLAG_HEADER 0x00000001
  42. #define VORBIS_FLAG_COMMENT 0x00000002
  43. /**
  44. * Get the duration for a Vorbis packet.
  45. *
  46. * If @p flags is @c NULL,
  47. * special frames are considered invalid.
  48. *
  49. * @param s Vorbis parser context
  50. * @param buf buffer containing a Vorbis frame
  51. * @param buf_size size of the buffer
  52. * @param flags flags for special frames
  53. */
  54. int av_vorbis_parse_frame_flags(AVVorbisParseContext *s, const uint8_t *buf,
  55. int buf_size, int *flags);
  56. /**
  57. * Get the duration for a Vorbis packet.
  58. *
  59. * @param s Vorbis parser context
  60. * @param buf buffer containing a Vorbis frame
  61. * @param buf_size size of the buffer
  62. */
  63. int av_vorbis_parse_frame(AVVorbisParseContext *s, const uint8_t *buf,
  64. int buf_size);
  65. void av_vorbis_parse_reset(AVVorbisParseContext *s);
  66. #endif /* AVCODEC_VORBIS_PARSE_H */