release/src-rt-6.x.4708/linux/linux-2.6.36/sound/usb/urb.h

   1 #ifndef __USBAUDIO_URB_H
   2 #define __USBAUDIO_URB_H
   3
   4 void snd_usb_init_substream(struct snd_usb_stream *as,
   5                             int stream,
   6                             struct audioformat *fp);
   7
   8 int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
   9                                 unsigned int period_bytes,
  10                                 unsigned int rate,
  11                                 unsigned int frame_bits);
  12
  13 void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force);
  14
  15 int snd_usb_substream_prepare(struct snd_usb_substream *subs,
  16                               struct snd_pcm_runtime *runtime);
  17
  18 int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd);
  19 int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd);
  20
  21 #endif /* __USBAUDIO_URB_H */