src/wav_reader.h

   1 /*
   2  * Copyright (C) 2013 nu774
   3  * For conditions of distribution and use, see copyright notice in COPYING
   4  */
   5 #ifndef WAV_READER_H
   6 #define WAV_READER_H
   7
   8 #include "lpcm.h"
   9
  10 enum wav_error_code {
  11     WAV_IO_ERROR = 1,
  12     WAV_NO_MEMORY,
  13     WAV_INVALID_FORMAT,
  14     WAV_UNSUPPORTED_FORMAT
  15 };
  16
  17 typedef int (*wav_read_callback)(void *cookie, void *data, uint32_t size);
  18 typedef int (*wav_seek_callback)(void *cookie, int64_t off, int whence);
  19
  20 typedef struct wav_io_context_t {
  21     wav_read_callback read;
  22     wav_seek_callback seek;
  23 } wav_io_context_t;
  24
  25 typedef struct wav_reader_t wav_reader_t;
  26
  27 wav_reader_t *wav_open(wav_io_context_t *io_ctx, void *io_cookie,
  28                        int ignore_length);
  29 const pcm_sample_description_t *wav_get_format(wav_reader_t *reader);
  30 int wav_read_frames(wav_reader_t *reader, void *buffer, unsigned nframes);
  31 int64_t wav_get_length(wav_reader_t *reader);
  32 int64_t wav_get_position(wav_reader_t *reader);
  33 void wav_teardown(wav_reader_t **reader);
  34
  35 #endif