*/
/* PCM */
-audio_return_t _pcm_open(void **pcm_handle, uint32_t direction, void *sample_spec, uint32_t period_size, uint32_t periods);
+audio_return_t _pcm_open(const char *card, const char *device, uint32_t direction, void *sample_spec, uint32_t period_size, uint32_t periods, void **pcm_handle);
audio_return_t _pcm_start(void *pcm_handle);
audio_return_t _pcm_stop(void *pcm_handle);
audio_return_t _pcm_close(void *pcm_handle);