linux/sound/usb/endpoint.h

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#ifndef __USBAUDIO_ENDPOINT_H
#define __USBAUDIO_ENDPOINT_H
void snd_usb_init_substream(struct snd_usb_stream *as,
int stream,
struct audioformat *fp);
int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
unsigned int period_bytes,
unsigned int rate,
unsigned int frame_bits);
void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force);
int snd_usb_substream_prepare(struct snd_usb_substream *subs,
struct snd_pcm_runtime *runtime);
int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd);
int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd);
#endif /* __USBAUDIO_ENDPOINT_H */