/* close associated midi device for output */
static int midisynth_unuse(void *private_data, snd_seq_port_subscribe_t *info)
{
seq_midisynth_t *msynth = (seq_midisynth_t *)private_data;
unsigned char buf = 0xff; /* MIDI reset */
snd_assert(msynth->output_rfile.output != NULL, return -EINVAL);
/* sending single MIDI reset message to shut the device up */
snd_rawmidi_kernel_write(msynth->output_rfile.output, &buf, 1);
snd_rawmidi_drain_output(msynth->output_rfile.output);
return snd_rawmidi_kernel_release(&msynth->output_rfile);
}
static int dump_midi(snd_rawmidi_substream_t *substream, const char *buf, int count)
{
snd_rawmidi_runtime_t *runtime;
int tmp;
snd_assert(substream != NULL || buf != NULL, return -EINVAL);
runtime = substream->runtime;
if ((tmp = runtime->avail) < count) {
snd_printk("warning, output event was lost (count = %i, available = %i)\n", count, tmp);
return -ENOMEM;
}
if (snd_rawmidi_kernel_write(substream, buf, count) < count)
return -EINVAL;
return 0;
}
static int dump_midi(struct snd_rawmidi_substream *substream, const char *buf, int count)
{
struct snd_rawmidi_runtime *runtime;
int tmp;
if (snd_BUG_ON(!substream || !buf))
return -EINVAL;
runtime = substream->runtime;
if ((tmp = runtime->avail) < count) {
if (printk_ratelimit())
snd_printk(KERN_ERR "MIDI output buffer overrun\n");
return -ENOMEM;
}
if (snd_rawmidi_kernel_write(substream, buf, count) < count)
return -EINVAL;
return 0;
}