snd_rawmidi_transmit_peek(9) centos man page | unix.com

SND_RAWMIDI_TRANSMIT(9) 					     MIDI API						   SND_RAWMIDI_TRANSMIT(9)

NAME
       snd_rawmidi_transmit_peek - copy data from the internal buffer

SYNOPSIS
       int snd_rawmidi_transmit_peek(struct snd_rawmidi_substream * substream, unsigned char * buffer, int count);

ARGUMENTS
       substream
	   the rawmidi substream

       buffer
	   the buffer pointer

       count
	   data size to transfer

DESCRIPTION
       Copies data from the internal output buffer to the given buffer.

       Call this in the interrupt handler when the midi output is ready, and call snd_rawmidi_transmit_ack after the transmission is finished.

RETURN
       The size of copied data, or a negative error code on failure.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   SND_RAWMIDI_TRANSMIT(9)