table of contents
| 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.
Returns the size of copied data, or a negative error code on failure.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |