void
mastermidibus::set_ppqn (int ppqn)
{
#ifdef SEQ64_HAVE_LIBASOUND
automutex locker(m_mutex);
m_ppqn = ppqn;
snd_seq_queue_tempo_t * tempo;
snd_seq_queue_tempo_alloca(&tempo); /* allocate tempo struct */
snd_seq_get_queue_tempo(m_alsa_seq, m_queue, tempo);
snd_seq_queue_tempo_set_ppq(tempo, m_ppqn);
snd_seq_set_queue_tempo(m_alsa_seq, m_queue, tempo);
#endif
}
void
mastermidibus::set_beats_per_minute (int bpm)
{
#ifdef SEQ64_HAVE_LIBASOUND
automutex locker(m_mutex);
m_beats_per_minute = bpm;
snd_seq_queue_tempo_t *tempo;
snd_seq_queue_tempo_alloca(&tempo); /* allocate tempo struct */
snd_seq_get_queue_tempo(m_alsa_seq, m_queue, tempo);
snd_seq_queue_tempo_set_tempo
(
tempo, int(tempo_us_from_beats_per_minute(bpm))
);
snd_seq_set_queue_tempo(m_alsa_seq, m_queue, tempo);
#endif
}
void
mastermidibus::set_bpm (int a_bpm)
{
#ifdef HAVE_LIBASOUND
automutex locker(m_mutex);
snd_seq_queue_tempo_t *tempo;
snd_seq_queue_tempo_alloca(&tempo); /* allocate tempo struct */
/*
* Fill the tempo structure with the current tempo information, set
* the BPM value, put it in the tempo structure, and give the tempo
* structure to the ALSA queue.
*/
snd_seq_get_queue_tempo(m_alsa_seq, m_queue, tempo);
m_bpm = a_bpm;
snd_seq_queue_tempo_set_tempo(tempo, 60000000 / m_bpm);
snd_seq_set_queue_tempo(m_alsa_seq, m_queue, tempo);
#endif
}
void
mastermidibus::set_ppqn (int a_ppqn)
{
#ifdef HAVE_LIBASOUND
automutex locker(m_mutex);
snd_seq_queue_tempo_t * tempo;
snd_seq_queue_tempo_alloca(&tempo); /* allocate tempo struct */
/*
* Fill the tempo structure with the current tempo information. Then
* set the ppqn value. Finally, give the tempo structure to the ALSA
* queue.
*/
m_ppqn = a_ppqn;
snd_seq_get_queue_tempo(m_alsa_seq, m_queue, tempo);
snd_seq_queue_tempo_set_ppq(tempo, m_ppqn);
snd_seq_set_queue_tempo(m_alsa_seq, m_queue, tempo);
#endif
}
void
mastermidibus::set_bpm( int a_bpm )
{
lock();
m_bpm = a_bpm;
/* allocate tempo struct */
snd_seq_queue_tempo_t *tempo;
snd_seq_queue_tempo_alloca( &tempo );
/* fill tempo struct with current tempo info */
snd_seq_get_queue_tempo( m_alsa_seq, m_queue, tempo );
snd_seq_queue_tempo_set_tempo( tempo, 60000000 / m_bpm );
/* give tempo struct to the queue */
snd_seq_set_queue_tempo(m_alsa_seq, m_queue, tempo );
unlock();
}
void
mastermidibus::set_ppqn( int a_ppqn )
{
lock();
m_ppqn = a_ppqn;
/* allocate tempo struct */
snd_seq_queue_tempo_t *tempo;
snd_seq_queue_tempo_alloca( &tempo );
/* fill tempo struct with current tempo info */
snd_seq_get_queue_tempo( m_alsa_seq, m_queue, tempo );
/* set ppqn */
snd_seq_queue_tempo_set_ppq( tempo, m_ppqn );
/* give tempo struct to the queue */
snd_seq_set_queue_tempo( m_alsa_seq, m_queue, tempo );
unlock();
}
