src/pcm_reader.h

   1 #ifndef PCM_READER_H
   2 #define PCM_READER_H
   3
   4 typedef struct pcm_reader_t pcm_reader_t;
   5
   6 typedef struct pcm_reader_vtbl_t {
   7     const pcm_sample_description_t *(*get_format)(pcm_reader_t *);
   8     int64_t (*get_length)(pcm_reader_t *);
   9     int64_t (*get_position)(pcm_reader_t *);
  10     int (*read_frames)(pcm_reader_t *, void *, unsigned);
  11     void (*teardown)(pcm_reader_t **);
  12 } pcm_reader_vtbl_t;
  13
  14 struct pcm_reader_t {
  15     pcm_reader_vtbl_t *vtbl;
  16 };
  17
  18 static inline
  19 const pcm_sample_description_t *pcm_get_format(pcm_reader_t *r)
  20 {
  21     return r->vtbl->get_format(r);
  22 }
  23
  24 static inline
  25 int64_t pcm_get_length(pcm_reader_t *r)
  26 {
  27     return r->vtbl->get_length(r);
  28 }
  29
  30 static inline
  31 int64_t pcm_get_position(pcm_reader_t *r)
  32 {
  33     return r->vtbl->get_position(r);
  34 }
  35
  36 static inline
  37 int64_t pcm_read_frames(pcm_reader_t *r, void *data, unsigned nframes)
  38 {
  39     return r->vtbl->read_frames(r, data, nframes);
  40 }
  41
  42 static inline
  43 void pcm_teardown(pcm_reader_t **r)
  44 {
  45     (*r)->vtbl->teardown(r);
  46 }
  47
  48 #endif