buffer.c

   1 #include "buffer.h"
   2 #include "stdlib.h"
   3
   4 void buffer_init(struct buffer *buf)
   5 {
   6     buf->n_samples = 0;
   7     buf->data = NULL;
   8 }
   9
  10 err_t buffer_alloc(struct buffer *buf, size_t n_samples)
  11 {
  12     void *new_buf;
  13     if (buf->n_samples != n_samples){
  14         new_buf = realloc(buf->data, n_samples * aformat_get_sample_size(&buf->format));
  15         if (!new_buf){
  16             return make_error(ENOMEM, NULL, "memory full: allocating buffer (%d samples)", n_samples);
  17         }
  18         buf->data = new_buf;
  19         buf->n_samples = n_samples;
  20     }
  21     return EOK;
  22 }