void snd_midi_process_event(snd_midi_op_t *ops, snd_seq_event_t *ev,
snd_midi_channel_set_t *chanset);
void snd_midi_channel_set_clear(snd_midi_channel_set_t *chset);
-void snd_midi_channel_init(snd_midi_channel_t *p, int n);
-snd_midi_channel_t *snd_midi_channel_init_set(int n);
snd_midi_channel_set_t *snd_midi_channel_alloc_set(int n);
void snd_midi_channel_free_set(snd_midi_channel_set_t *chset);