void sendMessageNow (const MidiMessage& message)
{
if (message.getRawDataSize() > maxEventSize)
{
maxEventSize = message.getRawDataSize();
snd_midi_event_free (midiParser);
snd_midi_event_new (maxEventSize, &midiParser);
}
snd_seq_event_t event;
snd_seq_ev_clear (&event);
snd_midi_event_encode (midiParser,
message.getRawData(),
message.getRawDataSize(),
&event);
snd_midi_event_reset_encode (midiParser);
snd_seq_ev_set_source (&event, 0);
snd_seq_ev_set_subs (&event);
snd_seq_ev_set_direct (&event);
snd_seq_event_output (seqHandle, &event);
snd_seq_drain_output (seqHandle);
}
void MIDIDevice::feedBack(t_input_channel channel, t_input_value value)
{
/* MIDI devices can have only 128 notes or controllers */
if (channel < 128)
{
snd_seq_event_t ev;
MIDIInput* plugin;
plugin = static_cast<MIDIInput*> (parent());
Q_ASSERT(plugin != NULL);
Q_ASSERT(plugin->alsa() != NULL);
Q_ASSERT(m_address != NULL);
/* Setup an event structure */
snd_seq_ev_clear(&ev);
snd_seq_ev_set_dest(&ev, m_address->client, m_address->port);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_direct(&ev);
/* Send control change, channel 1 (0) */
snd_seq_ev_set_controller(&ev, 0, channel, value >> 1);
snd_seq_event_output(plugin->alsa(), &ev);
snd_seq_drain_output(plugin->alsa());
/* Send note on/off, channel 1 (0) */
if (value == 0)
snd_seq_ev_set_noteoff(&ev, 0, channel, 0);
else
snd_seq_ev_set_noteon(&ev, 0, channel, value >> 1);
snd_seq_event_output(plugin->alsa(), &ev);
snd_seq_drain_output(plugin->alsa());
}
void midi_noteon_alsa(struct midi_handle *mh,
unsigned char port,
unsigned char channel,
unsigned char value,
unsigned char volume)
{
struct midi_handle_alsa *mha = (struct midi_handle_alsa *) mh;
snd_seq_event_t ev;
struct snd_seq_real_time tstamp;
int rc;
if (port >= MAX_PORTS)
return;
memset(&tstamp, 0, sizeof(tstamp));
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, mha->outputport[port]);
snd_seq_ev_set_subs(&ev);
/* snd_seq_ev_set_dest(&ev, 128, 0); */
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_noteon(&ev, channel, value, volume);
/* ev.data.note.duration = 1000; */ /* it's drums... there is no note off. */
snd_seq_ev_schedule_real(&ev, mha->queue, 1, &tstamp);
/* printf("Sending event to port %d, chan=%d, note=%d, vel=%d, pid=%d\n",
mha->outputport, ev.data.note.channel,
ev.data.note.note, ev.data.note.velocity, getpid()); */
rc = snd_seq_event_output(mha->seqp, &ev);
if (rc < 0)
printf("Failed to output note.\n");
snd_seq_drain_output(mha->seqp);
return;
}
void stop_midireceiver (JackVST *jvst)
{
int err;
snd_seq_event_t event;
snd_seq_t *seq2 = create_sequencer ("jfstquit", true);
jvst->midiquit = 1;
snd_seq_connect_to (seq2, 0, snd_seq_client_id (jvst->seq),0);
snd_seq_ev_clear (&event);
snd_seq_ev_set_direct (&event);
snd_seq_ev_set_subs (&event);
snd_seq_ev_set_source (&event, 0);
snd_seq_ev_set_controller (&event,1,0x80,50);
if ((err = snd_seq_event_output (seq2, &event)) < 0) {
fst_error ("cannot send stop event to midi thread: %s\n",
snd_strerror (err));
}
snd_seq_drain_output (seq2);
snd_seq_close (seq2);
pthread_join (jvst->midi_thread,NULL);
snd_seq_close (jvst->seq);
}
static void Func_NoteOn( int channel, int key, int velocity )
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_noteon(&ev, channel, key, velocity);
sequence_event(&ev);
}
static void Func_PolyAftertouch( int channel, int key, int pressure )
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_keypress(&ev, channel, key, pressure);
sequence_event(&ev);
}
void MIDIDevice::outputDMX(const QByteArray& universe)
{
MIDIOut* plugin = static_cast<MIDIOut*> (parent());
Q_ASSERT(plugin != NULL);
Q_ASSERT(plugin->alsa() != NULL);
Q_ASSERT(m_address != NULL);
/* Setup a common event structure for all values */
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_dest(&ev, m_address->client, m_address->port);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_direct(&ev);
/* Since MIDI devices can have only 128 real channels, we don't
attempt to write more than that */
for (unsigned char channel = 0; channel < MAX_MIDI_DMX_CHANNELS;
channel++)
{
/* Scale 0-255 to 0-127 */
char scaled = DMX2MIDI(universe[channel]);
/* Since MIDI is so slow, we only send values that are
actually changed. */
if (m_values[channel] == scaled)
continue;
/* Store the changed MIDI value */
m_values[channel] = scaled;
if (mode() == Note)
{
if (scaled == 0)
{
/* 0 is sent as a note off command */
snd_seq_ev_set_noteoff(&ev, midiChannel(),
channel, scaled);
}
else
{
/* 1-127 is sent as note on command */
snd_seq_ev_set_noteon(&ev, midiChannel(),
channel, scaled);
}
snd_seq_event_output(plugin->alsa(), &ev);
}
else
{
/* Control change */
snd_seq_ev_set_controller(&ev, midiChannel(),
channel, scaled);
snd_seq_event_output_buffer(plugin->alsa(), &ev);
}
}
/* Make sure that all values go to the MIDI endpoint */
snd_seq_drain_output(plugin->alsa());
}
static void
note_on(int note, real_t power) {
snd_seq_event_t ev;
if (debug>1)
fprintf(stderr, "midimatch: (%ld) note on: note:%-3d p:%.2f name:%s@%d\n",
absolute_time, note, power,
midi_notename(note), midi_octave(note));
else if (debug>0)
fprintf(stderr, ".");
stats_note_ons ++;
act_freq[note] = 1;
if (midi_file != NULL ) {
midi_write_note_event(0x90 | midi_channel, note, 100, midi_file);
}
if ( use_sequencer ) {
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, 0);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_direct(&ev);
snd_seq_ev_set_noteon(&ev, midi_channel, note, 100) ;
snd_seq_event_output(midi_sequencer, &ev);
snd_seq_drain_output(midi_sequencer);
}
}
static void Func_ProgramChange( int channel, int program )
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_pgmchange(&ev, channel, program);
sequence_event(&ev);
}
static void Func_ControlChange( int channel, int number, int value )
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_controller(&ev, channel, number, value);
sequence_event(&ev);
}
/*
* Initialize a midi event from the context. The source and
* destination addresses will be set from the information
* stored in the context, which depends on the previous
* connection calls. In addition the time and channel are set.
* This should be called first before any of the following
* functions.
*
* Arguments:
* ctxp - Client application
* ep - Event to init
* time - Midi time
* devchan - Midi channel
*/
void
SeqContext::seq_midi_event_init(snd_seq_event_t *ep,
unsigned long time, int devchan)
{
int dev;
/* our client index is encoded in upper bits of devchan */
dev = devchan >> 4;
/*
* If insufficient output devices have been registered, then we
* just scale the device back to fit in the correct range. This
* is not necessarily what you want.
*/
if (dev >= destlist->length())
dev = dev % destlist->length();
if( verbose )
fprintf(stderr, "init midi event: time=%d source=%d:%d;",
(int)time, source.client, source.port);
snd_seq_ev_clear(ep);
snd_seq_ev_schedule_tick(ep, queue, 0, time);
ep->source = source;
if (destlist->length() > 0) {
ep->dest = *(destlist->index(dev));
if( verbose )
fprintf(stderr, "dev=%d; destination=%d:%d\n", dev, ep->dest.client, ep->dest.port);
}
}
static void Func_ChannelAftertouch( int channel, int pressure )
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_chanpress(&ev, channel, pressure);
sequence_event(&ev);
}
static void Func_PitchBend( int channel, int lsb, int msb )
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_pitchbend(&ev, channel, (lsb | (msb << 7)) - 8192);
sequence_event(&ev);
}
void* lp2midi(void* nothing)
{
printf("waiting for launchpad events\n");
snd_seq_event_t event;
while (1) {
// wait for an event
lp_receive(lp);
// setup
snd_seq_ev_clear(&event);
snd_seq_ev_set_source(&event, midi_out); // set the output port number
snd_seq_ev_set_subs(&event); // broadcast to subscribers
// fill the event
switch(lp->event[0]) {
case NOTE:
snd_seq_ev_set_noteon(&event, 0, lp->event[1], lp->event[2]);
break;
case CTRL:
snd_seq_ev_set_controller(&event, 0, lp->event[1], lp->event[2]);
break;
}
// send now
snd_seq_ev_set_direct(&event);
snd_seq_event_output(midi_client, &event);
snd_seq_drain_output(midi_client);
}
}
static void
note_off(int note, real_t power) {
snd_seq_event_t ev;
if (debug>2)
fprintf(stderr, "midimatch: (%ld) note off: note:%-3d p:%.2f maxp:%0.2f\n",
absolute_time, note, power, act_freq[note]);
act_freq[note] = 0.0f;
if (midi_file != NULL )
midi_write_note_event(0x80 | midi_channel, note, 100, midi_file);
if ( use_sequencer ) {
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, 0);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_direct(&ev);
snd_seq_ev_set_noteoff(&ev, midi_channel, note, 100) ;
snd_seq_event_output(midi_sequencer, &ev);
snd_seq_drain_output(midi_sequencer);
}
}
void DssiPluginMidiManager::convertMidiMessages (MidiBuffer& midiMessages,
const int blockSamples)
{
const uint8* data;
int numBytesOfMidiData,
samplePosition;
MidiBuffer::Iterator it (midiMessages);
currentMidiCount = 0;
while (it.getNextEvent (data,
numBytesOfMidiData,
samplePosition))
{
if (numBytesOfMidiData > maxEventSize)
{
maxEventSize = numBytesOfMidiData;
snd_midi_event_free (midiParser);
snd_midi_event_new (maxEventSize, &midiParser);
}
snd_seq_event_t* event = & midiEventsBuffer [currentMidiCount];
snd_seq_ev_clear (event);
snd_midi_event_encode (midiParser,
data,
numBytesOfMidiData,
event);
if (++currentMidiCount >= 2048)
break;
}
snd_midi_event_reset_encode (midiParser);
}
void JVlibForm::on_System_MIDI_progressBar_sliderReleased() {
if (!System_PauseMidi_button->isChecked()) return;
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_direct(&ev);
snd_seq_get_queue_status(seq, queue, status);
// reset queue position
snd_seq_ev_is_tick(&ev);
snd_seq_ev_set_queue_pos_tick(&ev, queue, 0);
snd_seq_event_output(seq, &ev);
snd_seq_drain_output(seq);
// scan the event queue for the closest tick >= 'x'
int y = 0;
for (std::vector<event>::iterator Event=all_events.begin(); Event!=all_events.end(); ++Event) {
if (static_cast<int>(Event->tick) >= System_MIDI_progressBar->sliderPosition()) {
ev.time.tick = Event->tick;
event_num = y;
break;
}
y++;
}
ev.dest.client = SND_SEQ_CLIENT_SYSTEM;
ev.dest.port = SND_SEQ_PORT_SYSTEM_TIMER;
snd_seq_ev_set_queue_pos_tick(&ev, queue, ev.time.tick);
snd_seq_event_output(seq, &ev);
snd_seq_drain_output(seq);
snd_seq_real_time_t *new_time = new snd_seq_real_time_t;
double x = static_cast<double>(ev.time.tick)/all_events.back().tick;
new_time->tv_sec = (x*song_length_seconds);
new_time->tv_nsec = 0;
snd_seq_ev_set_queue_pos_real(&ev, queue, new_time);
MIDI_time_display->setText(QString::number(static_cast<int>(new_time->tv_sec)/60).rightJustified(2,'0')+
":"+QString::number(static_cast<int>(new_time->tv_sec)%60).rightJustified(2,'0'));
if (System_PauseMidi_button->isChecked()) return;
} // end on_System_MIDI_progressBar_sliderReleased
void sendMessageNow (const MidiMessage& message)
{
if (message.getRawDataSize() > maxEventSize)
{
maxEventSize = message.getRawDataSize();
snd_midi_event_free (midiParser);
snd_midi_event_new (maxEventSize, &midiParser);
}
snd_seq_event_t event;
snd_seq_ev_clear (&event);
long numBytes = (long) message.getRawDataSize();
const uint8* data = message.getRawData();
while (numBytes > 0)
{
const long numSent = snd_midi_event_encode (midiParser, data, numBytes, &event);
if (numSent <= 0)
break;
numBytes -= numSent;
data += numSent;
snd_seq_ev_set_source (&event, 0);
snd_seq_ev_set_subs (&event);
snd_seq_ev_set_direct (&event);
snd_seq_event_output (seqHandle, &event);
}
snd_seq_drain_output (seqHandle);
snd_midi_event_reset_encode (midiParser);
}
// Decoder.
bool dequeue ( snd_seq_event_t *ev )
{
qxgeditMidiRpn::Event event;
if (!qxgeditMidiRpn::dequeue(event))
return false;
snd_seq_ev_clear(ev);
snd_seq_ev_schedule_tick(ev, 0, 0, event.time);
snd_seq_ev_set_dest(ev, 0, event.port);
snd_seq_ev_set_fixed(ev);
switch (qxgeditMidiRpn::Type(event.status & 0x70)) {
case qxgeditMidiRpn::CC: // 0x10
ev->type = SND_SEQ_EVENT_CONTROLLER;
break;
case qxgeditMidiRpn::RPN: // 0x20
ev->type = SND_SEQ_EVENT_REGPARAM;
break;
case qxgeditMidiRpn::NRPN: // 0x30
ev->type = SND_SEQ_EVENT_NONREGPARAM;
break;
case qxgeditMidiRpn::CC14: // 0x40
ev->type = SND_SEQ_EVENT_CONTROL14;
break;
default:
return false;
}
ev->data.control.channel = event.status & 0x0f;
ev->data.control.param = event.param;
ev->data.control.value = event.value;
return true;
}
void qxgeditMidiDevice::sendSysex (
unsigned char *pSysex, unsigned short iSysex ) const
{
#ifdef CONFIG_DEBUG
fprintf(stderr, "qxgeditMidiDevice::sendSysex(%p, %u)", pSysex, iSysex);
fprintf(stderr, " sysex {");
for (unsigned short i = 0; i < iSysex; ++i)
fprintf(stderr, " %02x", pSysex[i]);
fprintf(stderr, " }\n");
#endif
// Don't do anything else if engine
// has not been activated...
if (m_pAlsaSeq == NULL)
return;
// Initialize sequencer event...
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
// Addressing...
snd_seq_ev_set_source(&ev, m_iAlsaPort);
snd_seq_ev_set_subs(&ev);
// The event will be direct...
snd_seq_ev_set_direct(&ev);
// Just set SYSEX stuff and send it out..
ev.type = SND_SEQ_EVENT_SYSEX;
snd_seq_ev_set_sysex(&ev, iSysex, pSysex);
snd_seq_event_output_direct(m_pAlsaSeq, &ev);
}
void
midibus::play (event * a_e24, unsigned char a_channel)
{
#ifdef HAVE_LIBASOUND
automutex locker(m_mutex);
snd_seq_event_t ev;
snd_midi_event_t *midi_ev; /* ALSA MIDI parser */
unsigned char buffer[3]; /* temp for MIDI data */
/* fill buffer and set midi channel */
buffer[0] = a_e24->get_status();
buffer[0] += (a_channel & 0x0F);
a_e24->get_data(&buffer[1], &buffer[2]);
snd_midi_event_new(10, &midi_ev);
/* clear event */
snd_seq_ev_clear(&ev);
snd_midi_event_encode(midi_ev, buffer, 3, &ev);
snd_midi_event_free(midi_ev);
/* set source */
snd_seq_ev_set_source(&ev, m_local_addr_port);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_direct(&ev); // its immediate
/* pump it into the queue */
snd_seq_event_output(m_seq, &ev);
#endif // HAVE_LIBASOUND
}
static
void do_jack_output(alsa_seqmidi_t *self, port_t *port, struct process_info* info)
{
stream_t *str = &self->stream[info->dir];
int nevents = jack_midi_get_event_count(port->jack_buf);
int i;
for (i=0; i<nevents; ++i) {
jack_midi_event_t jack_event;
snd_seq_event_t alsa_event;
int64_t frame_offset;
int64_t out_time;
snd_seq_real_time_t out_rt;
int err;
jack_midi_event_get(&jack_event, port->jack_buf, i);
snd_seq_ev_clear(&alsa_event);
snd_midi_event_reset_encode(str->codec);
if (!snd_midi_event_encode(str->codec, jack_event.buffer, jack_event.size, &alsa_event))
continue; // invalid event
snd_seq_ev_set_source(&alsa_event, self->port_id);
snd_seq_ev_set_dest(&alsa_event, port->remote.client, port->remote.port);
/* NOTE: in case of xrun it could become negative, so it is essential to use signed type! */
frame_offset = (int64_t)jack_event.time + info->period_start + info->nframes - info->cur_frames;
if (frame_offset < 0) {
frame_offset = info->nframes + jack_event.time;
error_log("internal xrun detected: frame_offset = %"PRId64"\n", frame_offset);
}
/* Ken Ellinwood reported problems with this assert.
* Seems, magic 2 should be replaced with nperiods. */
//FIXME: assert (frame_offset < info->nframes*2);
//if (frame_offset < info->nframes * info->nperiods)
// debug_log("alsa_out: BLAH-BLAH-BLAH");
out_time = info->alsa_time + (frame_offset * NSEC_PER_SEC) / info->sample_rate;
debug_log("alsa_out: frame_offset = %lld, info->alsa_time = %lld, out_time = %lld, port->last_out_time = %lld",
frame_offset, info->alsa_time, out_time, port->last_out_time);
// we should use absolute time to prevent reordering caused by rounding errors
if (out_time < port->last_out_time) {
debug_log("alsa_out: limiting out_time %lld at %lld", out_time, port->last_out_time);
out_time = port->last_out_time;
} else
port->last_out_time = out_time;
out_rt.tv_nsec = out_time % NSEC_PER_SEC;
out_rt.tv_sec = out_time / NSEC_PER_SEC;
snd_seq_ev_schedule_real(&alsa_event, self->queue, 0, &out_rt);
err = snd_seq_event_output(self->seq, &alsa_event);
debug_log("alsa_out: written %d bytes to %s at %+d (%lld): %d", (int)jack_event.size, port->name, (int)frame_offset, out_time, err);
}
}
/**
* \brief queue controls - start/stop/continue
* \param seq sequencer handle
* \param q queue id to control
* \param type event type
* \param value event value
* \param ev event instance
*
* This function sets up general queue control event and sends it.
* To send at scheduled time, set the schedule in \a ev.
* If \a ev is NULL, the event is composed locally and sent immediately
* to the specified queue. In any cases, you need to call #snd_seq_drain_output()
* appropriately to feed the event.
*
* \sa snd_seq_alloc_queue()
*/
int snd_seq_control_queue(snd_seq_t *seq, int q, int type, int value, snd_seq_event_t *ev)
{
snd_seq_event_t tmpev;
if (ev == NULL) {
snd_seq_ev_clear(&tmpev);
ev = &tmpev;
snd_seq_ev_set_direct(ev);
}
snd_seq_ev_set_queue_control(ev, type, q, value);
return snd_seq_event_output(seq, ev);
}
void MIDIDevice::feedBack(t_input_channel channel, t_input_value value)
{
/* MIDI devices can have only 128 notes or controllers */
if (channel < 128)
{
snd_seq_event_t ev;
MIDIInput* plugin;
plugin = static_cast<MIDIInput*> (parent());
Q_ASSERT(plugin != NULL);
Q_ASSERT(plugin->alsa() != NULL);
Q_ASSERT(m_address != NULL);
/* Setup an event structure */
snd_seq_ev_clear(&ev);
snd_seq_ev_set_dest(&ev, m_address->client, m_address->port);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_direct(&ev);
char scaled = static_cast <char> (SCALE(double(value),
double(0),
double(KInputValueMax),
double(0),
double(127)));
if (m_mode == ControlChange)
{
/* Send control change */
snd_seq_ev_set_controller(&ev, midiChannel(),
channel, scaled);
snd_seq_event_output(plugin->alsa(), &ev);
snd_seq_drain_output(plugin->alsa());
}
else
{
/* Send note on/off */
if (value == 0)
{
snd_seq_ev_set_noteoff(&ev, midiChannel(),
channel, scaled);
}
else
{
snd_seq_ev_set_noteon(&ev, midiChannel(),
channel, scaled);
}
snd_seq_event_output(plugin->alsa(), &ev);
snd_seq_drain_output(plugin->alsa());
}
}
}
void synth_noteStop(synth_t * st,int num, int status)
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_direct(&ev);
snd_seq_ev_set_source(&ev, port_out_id);
snd_seq_ev_set_subs(&ev);
//usleep(100000);
printf("synth_noteStop %d\n", st->runningNote[num]);
snd_seq_ev_set_noteoff(&ev, st->channel, st->runningNote[num], st->velocity);
snd_seq_event_output_direct(seq, &ev);
snd_seq_drain_output(seq);
}
void
rimshot_alsa_output_play_note (rimshot_alsa_output_t *output, int channel, int note, unsigned int velocity)
{
snd_seq_event_t ev;
snd_seq_ev_clear (&ev);
snd_seq_ev_set_source (&ev, output->port);
snd_seq_ev_set_subs (&ev);
snd_seq_ev_set_direct (&ev);
snd_seq_ev_set_noteon (&ev, channel, note, velocity);
snd_seq_event_output_direct (output->seq, &ev);
}
// change the tempo on the fly
int change_tempo(snd_seq_t *handle, int my_client_id, int my_port_id, int q, unsigned int tempo)
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
ev.dest.client = SND_SEQ_CLIENT_SYSTEM;
ev.dest.port = SND_SEQ_PORT_SYSTEM_TIMER;
ev.source.client = my_client_id;
ev.source.port = my_port_id;
ev.queue = SND_SEQ_QUEUE_DIRECT; // no scheduling
ev.data.queue.queue = q; // affected queue id
ev.data.queue.param.value = tempo; // new tempo in microsec.
return snd_seq_event_output(handle, &ev);
}
static PyObject *send_note_on(PyObject *self, PyObject *args)
{
int channel, note, velocity;
if (!PyArg_ParseTuple(args, "iii", &channel, ¬e, &velocity))
return NULL;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_noteon(&ev, channel, note, velocity);
send();
Py_INCREF(Py_None);
return Py_None;
}
static PyObject *send_control_change(PyObject *self, PyObject *args)
{
int channel, param, value;
if (!PyArg_ParseTuple(args, "iii", &channel, ¶m, &value))
return NULL;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_controller(&ev, channel, param, value);
send();
Py_INCREF(Py_None);
return Py_None;
}
static gboolean
put_click (const DrumClick *click)
{
snd_seq_event_t ev;
snd_seq_ev_clear (&ev);
snd_seq_ev_set_source (&ev, out_port_id);
snd_seq_ev_set_subs (&ev);
snd_seq_ev_schedule_tick (&ev, queue_id, 0, click->tick);
snd_seq_ev_set_note (&ev, 10, 24, click->velocity, 48);
int err = snd_seq_event_output_direct (seq, &ev);
return err >= 0;
}