snd_rawmidi_transmit_peek (9) - Linux Man Pages

snd_rawmidi_transmit_peek: copy data from the internal buffer

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.

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