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sound/usb/urb.h
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#ifndef __USBAUDIO_URB_H #define __USBAUDIO_URB_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_URB_H */ |