SND_RAWMIDI_TRANSMIT
Section: MIDI API (9)
Updated: February 2011
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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.
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