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.
Returns the size of copied data, or a negative error code on failure.