/*
* =================== Input/output port handling =========================
*/
static
void set_process_info(struct process_info *info, alsa_seqmidi_t *self, int dir, jack_nframes_t nframes)
{
const snd_seq_real_time_t* alsa_time;
snd_seq_queue_status_t *status;
snd_seq_queue_status_alloca(&status);
info->dir = dir;
info->period_start = jack_last_frame_time(self->jack);
info->nframes = nframes;
info->sample_rate = jack_get_sample_rate(self->jack);
info->cur_frames = jack_frame_time(self->jack);
// immediately get alsa'a real time (uhh, why everybody has their own 'real' time)
snd_seq_get_queue_status(self->seq, self->queue, status);
alsa_time = snd_seq_queue_status_get_real_time(status);
info->alsa_time = alsa_time->tv_sec * NSEC_PER_SEC + alsa_time->tv_nsec;
if (info->period_start + info->nframes < info->cur_frames) {
int periods_lost = (info->cur_frames - info->period_start) / info->nframes;
info->period_start += periods_lost * info->nframes;
debug_log("xrun detected: %d periods lost\n", periods_lost);
}
}
static PyObject *
alsaseq_status(PyObject *self /* Not used */, PyObject *args)
{
snd_seq_queue_status_t *queue_status;
int running, events;
const snd_seq_real_time_t *current_time;
if (!PyArg_ParseTuple(args, "" ))
return NULL;
snd_seq_queue_status_malloc( &queue_status );
snd_seq_get_queue_status( seq_handle, queue_id, queue_status );
current_time = snd_seq_queue_status_get_real_time( queue_status );
running = snd_seq_queue_status_get_status( queue_status );
events = snd_seq_queue_status_get_events( queue_status );
snd_seq_queue_status_free( queue_status );
return Py_BuildValue( "(i(ii),i)", running, current_time->tv_sec, current_time->tv_nsec, events );
}
static PyObject *
alsaseq_status(PyObject *self /* Not used */, PyObject *args)
{
snd_seq_queue_status_t *queue_status;
int running, events;
const snd_seq_real_time_t *current_time;
if (!PyArg_ParseTuple(args, "" ))
return NULL;
if (!seq_handle) {
PyErr_SetString(PyExc_RuntimeError, "Must initialize module with alsaseq.client() before using it");
return NULL;
}
snd_seq_queue_status_malloc( &queue_status );
snd_seq_get_queue_status( seq_handle, queue_id, queue_status );
current_time = snd_seq_queue_status_get_real_time( queue_status );
running = snd_seq_queue_status_get_status( queue_status );
events = snd_seq_queue_status_get_events( queue_status );
snd_seq_queue_status_free( queue_status );
return Py_BuildValue( "(i(ii),i)", running, current_time->tv_sec, current_time->tv_nsec, events );
}
