seq: fix snd_seq_set_queue_tempo() usage example in the documentation

snd_seq_set_queue_tempo() requires a queue id as the second argument,
fix the example in documentation to reflect that.

Also add the queue id as an argument of the set_tempo() function, just
to keep the whole example compilable.

Signed-off-by: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Antonio Ospite 2017-09-28 15:46:15 +02:00 committed by Takashi Iwai
parent 6a617cc719
commit baed295faa

View file

@ -452,13 +452,13 @@ For setting these tempo parameters, use #snd_seq_queue_tempo_t record.
For example, to set the tempo of the queue <code>q</code> to
48 PPQ, 60 BPM,
\code
void set_tempo(snd_seq_t *handle)
void set_tempo(snd_seq_t *handle, int queue)
{
snd_seq_queue_tempo_t *tempo;
snd_seq_queue_tempo_alloca(&tempo);
snd_seq_queue_tempo_set_tempo(tempo, 1000000); // 60 BPM
snd_seq_queue_tempo_set_ppq(tempo, 48); // 48 PPQ
snd_seq_set_queue_tempo(handle, tempo);
snd_seq_set_queue_tempo(handle, queue, tempo);
}
\endcode