int AlsaSeqMidiInDriver::read(unsigned char* buf, int max)
{
if (!this->is_open())
throw std::logic_error("Device not open");
int bytes_read= 0;
int err;
snd_seq_event_t *ev;
do
{
if (snd_seq_event_input(m_impl->seq, &ev) > 0 )
{
err = snd_midi_event_decode (m_impl->decoder, buf, max, ev);
//snd_seq_free_event( ev );
if (err > 0)
{
buf += err;
bytes_read += err;
max -= err;
}
else
{
// error or buffer full -> drop midi event
}
}
}
while (snd_seq_event_input_pending(m_impl->seq, 0) > 0);
return bytes_read;
}
static GstFlowReturn gst_amidisrc_create (GstPushSrc * psrc, GstBuffer ** outbuf)
{
//GstaMIDISrc *src = GST_AMIDISRC (psrc);
/**
*outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (*outbuf) = buffer->len;
GST_BUFFER_MALLOCDATA (*outbuf) = buffer->data;
GST_BUFFER_DATA (*outbuf) = GST_BUFFER_MALLOCDATA (*outbuf);
GST_BUFFER_OFFSET (*outbuf) = src->read_offset;
GST_BUFFER_OFFSET_END (*outbuf) =
src->read_offset + GST_BUFFER_SIZE (*outbuf);
**/
//TODO:
printf("***Here: %s:%d\n",__FILE__,__LINE__);
#if 0
snd_seq_event_t *a_event=NULL;
snd_seq_event_input(src->a_seq,&a_event);
if(a_event){
// convert to audio/x-gst-midi format and push on psrc.
}
#endif
return GST_FLOW_OK;
}
static PyObject *
alsaseq_input(PyObject *self, PyObject *args)
{
snd_seq_event_t *ev;
if (!PyArg_ParseTuple(args, "" ))
return NULL;
Py_BEGIN_ALLOW_THREADS
snd_seq_event_input( seq_handle, &ev );
Py_END_ALLOW_THREADS
switch( ev->type ) {
case SND_SEQ_EVENT_NOTE:
case SND_SEQ_EVENT_NOTEON:
case SND_SEQ_EVENT_NOTEOFF:
case SND_SEQ_EVENT_KEYPRESS:
return Py_BuildValue( "(bbbb(ii)(bb)(bb)(bbbbi))", ev->type, ev->flags, ev->tag, ev->queue, ev->time.time.tv_sec, ev->time.time.tv_nsec, ev->source.client, ev->source.port, ev->dest.client, ev->dest.port, ev->data.note.channel, ev->data.note.note, ev->data.note.velocity, ev->data.note.off_velocity, ev->data.note.duration );
break;
case SND_SEQ_EVENT_CONTROLLER:
case SND_SEQ_EVENT_PGMCHANGE:
case SND_SEQ_EVENT_CHANPRESS:
case SND_SEQ_EVENT_PITCHBEND:
return Py_BuildValue( "(bbbb(ii)(bb)(bb)(bbbbii))", ev->type, ev->flags, ev->tag, ev->queue, ev->time.time.tv_sec, ev->time.time.tv_nsec, ev->source.client, ev->source.port, ev->dest.client, ev->dest.port, ev->data.control.channel, ev->data.control.unused[0], ev->data.control.unused[1], ev->data.control.unused[2], ev->data.control.param, ev->data.control.value );
break;
default:
return Py_BuildValue( "(bbbb(ii)(bb)(bb)(bbbbi))", ev->type, ev->flags, ev->tag, ev->queue, ev->time.time.tv_sec, ev->time.time.tv_nsec, ev->source.client, ev->source.port, ev->dest.client, ev->dest.port, ev->data.note.channel, ev->data.note.note, ev->data.note.velocity, ev->data.note.off_velocity, ev->data.note.duration );
}
}
// This splits the Midi events from one channel to another two channels
void Spliter::midievents(){
snd_seq_event_t *midievent;
midievent=NULL;
snd_seq_event_input(midi_in,&midievent);
if (midievent==NULL) return;
if ((midievent->type==SND_SEQ_EVENT_NOTEON)||(midievent->type==SND_SEQ_EVENT_NOTEOFF)){
int cmdchan=midievent->data.note.channel;
if (cmdchan==Pchin){
snd_seq_ev_set_subs(midievent);
snd_seq_ev_set_direct(midievent);
if (midievent->data.note.note<Psplitpoint) {
midievent->data.note.channel=Pchout1;
int tmp=midievent->data.note.note;
tmp+=Poct1*12;if (tmp>127) tmp=127;if (tmp<0) tmp=0;
midievent->data.note.note=tmp;
} else {
midievent->data.note.channel=Pchout2;
int tmp=midievent->data.note.note;
tmp+=Poct2*12;if (tmp>127) tmp=127;if (tmp<0) tmp=0;
midievent->data.note.note=tmp;
};
snd_seq_event_output_direct(midi_out,midievent);
} else {
snd_seq_ev_set_subs(midievent);
snd_seq_ev_set_direct(midievent);
snd_seq_event_output_direct(midi_out,midievent);
};
};
snd_seq_free_event(midievent);
};
void DeviceManager::loop()
{
struct pollfd *pfds;
int npfds;
int c, err;
npfds = snd_seq_poll_descriptors_count(handle, POLLIN);
D("npfds: %d", npfds);
pfds = (struct pollfd *)alloca(sizeof(*pfds) * npfds);
for (;;) {
snd_seq_poll_descriptors(handle, pfds, npfds, POLLIN);
if (poll(pfds, npfds, -1) < 0)
break;
do {
snd_seq_event_t *event;
err = snd_seq_event_input(handle, &event);
if (err < 0)
break;
if (event){
list[0]->processEvent(event);
}
} while (err > 0);
fflush(stdout);
// if (stop)
// break;
}
snd_seq_close(handle);
}
/* TODO: ADD MIDI PANIC/ALL NOTES OFF */
int midi_callback() {
snd_seq_event_t *ev;
int l1;
do {
snd_seq_event_input(seq_handle, &ev);
switch (ev->type) {
case SND_SEQ_EVENT_NOTEON:
for (l1 = 0; l1 < POLY; l1++) {
if (!note_active[l1]) {
note[l1] = ev->data.note.note;
printf("Note ON %d FREQ %d\n", note[l1] ,(note[l1])*FREQ_CHANNEL_WIDTH+FREQ_START);
velocity[l1] = ev->data.note.velocity / 127.0;
env_time[l1] = 0;
gate[l1] = 1;
note_active[l1] = 1;
break;
}
}
break;
case SND_SEQ_EVENT_NOTEOFF:
for (l1 = 0; l1 < POLY; l1++) {
if (gate[l1] && note_active[l1] && (note[l1] == ev->data.note.note)) {
printf("Note OFF %d \n", note[l1]);
env_time[l1] = 0;
gate[l1] = 0;
}
}
break;
}
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
return (0);
}
static PyObject *get_event(PyObject *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, "")) /* no args */
return NULL;
Py_BEGIN_ALLOW_THREADS
err = snd_seq_event_input(seq, &in_event);
Py_END_ALLOW_THREADS
if (err < 0)
return NULL;
if (in_event->type == SND_SEQ_EVENT_NOTEON ||
in_event->type == SND_SEQ_EVENT_NOTEOFF)
{
return Py_BuildValue("iiii",
in_event->type,
in_event->data.note.channel,
in_event->data.note.note,
in_event->data.note.velocity);
}
else if (in_event->type == SND_SEQ_EVENT_CONTROLLER)
{
return Py_BuildValue("iiii",
in_event->type,
in_event->data.control.channel,
in_event->data.control.param,
in_event->data.control.value);
}
Py_INCREF(Py_None);
return Py_None;
}
void run()
{
snd_seq_t *seq = m_sampl->alsa_seq();
if (seq == NULL)
return;
m_running = true;
int nfds;
struct pollfd *pfds;
nfds = snd_seq_poll_descriptors_count(seq, POLLIN);
pfds = (struct pollfd *) alloca(nfds * sizeof(struct pollfd));
snd_seq_poll_descriptors(seq, pfds, nfds, POLLIN);
int poll_rc = 0;
while (m_running && poll_rc >= 0) {
poll_rc = ::poll(pfds, nfds, 200);
while (poll_rc > 0) {
snd_seq_event_t *ev = NULL;
snd_seq_event_input(seq, &ev);
m_sampl->alsa_capture(ev);
// snd_seq_free_event(ev);
poll_rc = snd_seq_event_input_pending(seq, 0);
}
}
m_running = false;
}
int MidiInputDeviceAlsa::Main() {
int npfd;
struct pollfd* pfd;
snd_seq_event_t* ev;
npfd = snd_seq_poll_descriptors_count(hAlsaSeq, POLLIN);
pfd = (struct pollfd*) alloca(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(hAlsaSeq, pfd, npfd, POLLIN);
while (true) {
if (poll(pfd, npfd, 100000) > 0) {
do {
snd_seq_event_input(hAlsaSeq, &ev);
int port = (int) ev->dest.port;
MidiInputPort* pMidiInputPort = Ports[port];
switch (ev->type) {
case SND_SEQ_EVENT_CONTROLLER:
if (ev->data.control.param == 0)
pMidiInputPort->DispatchBankSelectMsb(ev->data.control.value, ev->data.control.channel);
else if (ev->data.control.param == 32)
pMidiInputPort->DispatchBankSelectLsb(ev->data.control.value, ev->data.control.channel);
pMidiInputPort->DispatchControlChange(ev->data.control.param, ev->data.control.value, ev->data.control.channel);
break;
case SND_SEQ_EVENT_CHANPRESS:
pMidiInputPort->DispatchControlChange(128, ev->data.control.value, ev->data.control.channel);
break;
case SND_SEQ_EVENT_PITCHBEND:
pMidiInputPort->DispatchPitchbend(ev->data.control.value, ev->data.control.channel);
break;
case SND_SEQ_EVENT_NOTEON:
if (ev->data.note.velocity != 0) {
pMidiInputPort->DispatchNoteOn(ev->data.note.note, ev->data.note.velocity, ev->data.control.channel);
}
else {
pMidiInputPort->DispatchNoteOff(ev->data.note.note, 0, ev->data.control.channel);
}
break;
case SND_SEQ_EVENT_NOTEOFF:
pMidiInputPort->DispatchNoteOff(ev->data.note.note, ev->data.note.velocity, ev->data.control.channel);
break;
case SND_SEQ_EVENT_SYSEX:
pMidiInputPort->DispatchSysex(ev->data.ext.ptr, ev->data.ext.len);
break;
case SND_SEQ_EVENT_PGMCHANGE:
pMidiInputPort->DispatchProgramChange(ev->data.control.value, ev->data.control.channel);
break;
}
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(hAlsaSeq, 0) > 0);
}
}
// just to avoid a compiler warning
return EXIT_FAILURE;
}
int main()
{
snd_seq_t *handle;
int err;
err = snd_seq_open(&handle, "default", SND_SEQ_OPEN_INPUT, 0);
if (err < 0) {
fprintf(stderr, "%s\n", snd_strerror(-err));
exit(1);
}
snd_seq_set_client_name(handle, "Yo!");
int port_number = snd_seq_create_simple_port(handle, "my port",
SND_SEQ_PORT_CAP_WRITE|SND_SEQ_PORT_CAP_SUBS_WRITE,
SND_SEQ_PORT_TYPE_MIDI_GENERIC);
snd_seq_event_t *event;
for (;;){
snd_seq_event_input(handle, &event);
printf("Type: %d\n", event->type);
if (snd_seq_ev_is_note_type(event)){
printf("Note: %d\n", event->data.note.note);
printf("Velocity: %d\n", event->data.note.velocity);
}
printf("Source: %d:%d\n", event->source.client, event->source.port);
printf("Destination: %d:%d\n", event->dest.client, event->dest.port);
}
return 0;
}
void* midi2lp(void* nothing)
{
printf("waiting for midi events\n");
snd_seq_event_t *ev;
while (1) {
// get a new event. if there aren't any, wait for one
snd_seq_event_input(midi_client, &ev);
// copy the data to send
switch (ev->type) {
case SND_SEQ_EVENT_NOTEON:
lp_send3(lp, NOTE_ON, ev->data.note.note, ev->data.note.velocity);
break;
case SND_SEQ_EVENT_NOTEOFF:
lp_send3(lp, NOTE_OFF, ev->data.note.note, ev->data.note.velocity);
break;
case SND_SEQ_EVENT_CONTROLLER:
lp_send3(lp, CTRL, ev->data.control.param, ev->data.control.value);
break;
}
// free the midi event
snd_seq_free_event(ev);
}
}
void SeqDriver::procEvents()
{
int l1;
snd_seq_event_t *evIn, evOut;
bool outOfRange = false;
bool unmatched = false;
MidiMap* mm;
do {
snd_seq_event_input(seq_handle, &evIn);
emit midiEvent(evIn);
unmatched = true;
for(l1 = 0; l1 < midiMapList->count(); l1++) {
mm = midiMapList->at(l1);
if (mm->isMap(evIn)) {
unmatched = false;
mm->doMap(evIn, &evOut, &outOfRange);
if (!outOfRange) {
snd_seq_ev_set_subs(&evOut);
snd_seq_ev_set_direct(&evOut);
snd_seq_ev_set_source(&evOut, portid_out[mm->portOut]);
snd_seq_event_output_direct(seq_handle, &evOut);
}
}
}
if (!discardUnmatched && unmatched) {
snd_seq_ev_set_subs(evIn);
snd_seq_ev_set_direct(evIn);
snd_seq_ev_set_source(evIn, portid_out[portUnmatched]);
snd_seq_event_output_direct(seq_handle, evIn);
}
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
}
/* handles all the midi calls */
void midi_action(snd_seq_t *seq_handle) {
snd_seq_event_t *ev;
do {
snd_seq_event_input(seq_handle, &ev);
printf( "%i \n", ev->data.control.channel, ev->data.control.value);
switch (ev->type) {
case SND_SEQ_EVENT_CONTROLLER:
printf("Control event on Channel %2d: %5d \n",
ev->data.control.channel, ev->data.control.value);
midi_set(ev, 2);
pedal_set(ev);
break;
case SND_SEQ_EVENT_PITCHBEND:
printf("Pitchbender event on Channel %2d: %5d \n",
ev->data.control.channel, ev->data.control.value);
break;
case SND_SEQ_EVENT_NOTEON:
printf("Note On event on Channel %2d: %5d \n",
ev->data.control.channel, ev->data.note.note);
break;
case SND_SEQ_EVENT_NOTEOFF:
printf("Note Off event on Channel %2d: %5d \n",
ev->data.control.channel, ev->data.note.note);
break;
case SND_SEQ_EVENT_PGMCHANGE:
printf("PGM event on Channel %2d: %5d \n",
ev->data.control.channel, ev->data.control.value);
midi_set(ev, 1);
break;
}
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
}
void *midireceiver(void *arg)
{
snd_seq_event_t *event;
JackVST *jvst = (JackVST* )arg;
int val;
struct sched_param scp;
scp.sched_priority = 50;
// Try to set fifo priority...
// this works, if we are root or newe sched-cap manegment is used...
pthread_setschedparam( pthread_self(), SCHED_FIFO, &scp );
while (1) {
snd_seq_event_input (jvst->seq, &event);
if (jvst->midiquit) {
break;
}
switch(event->type){
case SND_SEQ_EVENT_NOTEON:
queue_midi(jvst,0x90+event->data.note.channel,event->data.note.note,event->data.note.velocity);
//printf("Noteon, channel: %d note: %d vol: %d\n",event->data.note.channel,event->data.note.note,event->data.note.velocity);
break;
case SND_SEQ_EVENT_NOTEOFF:
queue_midi(jvst,0x80+event->data.note.channel,event->data.note.note,0);
//printf("Noteoff, channel: %d note: %d vol: %d\n",event->data.note.channel,event->data.note.note,event->data.note.velocity);
break;
case SND_SEQ_EVENT_KEYPRESS:
//printf("Keypress, channel: %d note: %d vol: %d\n",event->data.note.channel,event->data.note.note,event->data.note.velocity);
queue_midi(jvst,0xa0+event->data.note.channel,event->data.note.note,event->data.note.velocity);
break;
case SND_SEQ_EVENT_CONTROLLER:
queue_midi(jvst,0xb0+event->data.control.channel,event->data.control.param,event->data.control.value);
//printf("Control: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
break;
case SND_SEQ_EVENT_PITCHBEND:
val=event->data.control.value + 0x2000;
queue_midi(jvst,0xe0+event->data.control.channel,val&127,val>>7);
//printf("Pitch: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
break;
case SND_SEQ_EVENT_CHANPRESS:
//printf("chanpress: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
queue_midi(jvst,0xd0+event->data.control.channel,event->data.control.value,0);
break;
case SND_SEQ_EVENT_PGMCHANGE:
//printf("pgmchange: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
queue_midi(jvst,0xc0+event->data.control.channel,event->data.control.value,0);
break;
default:
//printf("Unknown type: %d\n",event->type);
break;
}
}
return NULL;
}
void* alsa_input_thread(void * arg)
{
struct a2j * self = arg;
int npfd;
struct pollfd * pfd;
snd_seq_addr_t addr;
snd_seq_client_info_t * client_info;
snd_seq_port_info_t * port_info;
bool initial;
snd_seq_event_t * event;
int ret;
npfd = snd_seq_poll_descriptors_count(self->seq, POLLIN);
pfd = (struct pollfd *)alloca(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(self->seq, pfd, npfd, POLLIN);
initial = true;
while (g_keep_alsa_walking) {
if ((ret = poll(pfd, npfd, 1000)) > 0) {
while (snd_seq_event_input (self->seq, &event) > 0) {
if (initial) {
snd_seq_client_info_alloca(&client_info);
snd_seq_port_info_alloca(&port_info);
snd_seq_client_info_set_client(client_info, -1);
while (snd_seq_query_next_client(self->seq, client_info) >= 0) {
addr.client = snd_seq_client_info_get_client(client_info);
if (addr.client == SND_SEQ_CLIENT_SYSTEM || addr.client == self->client_id) {
continue;
}
snd_seq_port_info_set_client(port_info, addr.client);
snd_seq_port_info_set_port(port_info, -1);
while (snd_seq_query_next_port(self->seq, port_info) >= 0) {
addr.port = snd_seq_port_info_get_port(port_info);
a2j_update_port(self, addr, port_info);
}
}
initial = false;
}
if (event->source.client == SND_SEQ_CLIENT_SYSTEM) {
a2j_port_event(self, event);
} else {
a2j_input_event(self, event);
}
snd_seq_free_event (event);
}
}
}
return (void*) 0;
}
void run()
{
const int maxEventSize = 16 * 1024;
snd_midi_event_t* midiParser;
if (snd_midi_event_new (maxEventSize, &midiParser) >= 0)
{
HeapBlock <uint8> buffer (maxEventSize);
const int numPfds = snd_seq_poll_descriptors_count (seqHandle, POLLIN);
struct pollfd* const pfd = (struct pollfd*) alloca (numPfds * sizeof (struct pollfd));
snd_seq_poll_descriptors (seqHandle, pfd, numPfds, POLLIN);
while (! threadShouldExit())
{
if (poll (pfd, numPfds, 500) > 0)
{
snd_seq_event_t* inputEvent = nullptr;
snd_seq_nonblock (seqHandle, 1);
do
{
if (snd_seq_event_input (seqHandle, &inputEvent) >= 0)
{
// xxx what about SYSEXes that are too big for the buffer?
const int numBytes = snd_midi_event_decode (midiParser, buffer, maxEventSize, inputEvent);
snd_midi_event_reset_decode (midiParser);
if (numBytes > 0)
{
const MidiMessage message ((const uint8*) buffer,
numBytes,
Time::getMillisecondCounter() * 0.001);
callback->handleIncomingMidiMessage (midiInput, message);
}
snd_seq_free_event (inputEvent);
}
}
while (snd_seq_event_input_pending (seqHandle, 0) > 0);
snd_seq_free_event (inputEvent);
}
}
snd_midi_event_free (midiParser);
}
};
static void *midireceiver(void *arg){
struct Data *data=(struct Data*)arg;
AEffect *effect=data->effect;
snd_seq_event_t *event;
for(;;){
snd_seq_event_input(data->seq, &event);
if(data->toquit==true) break;
switch(event->type){
case SND_SEQ_EVENT_NOTEON:
sendmidi(effect,0x90+event->data.note.channel,event->data.note.note,event->data.note.velocity);
//printf("Noteon, channel: %d note: %d vol: %d\n",event->data.note.channel,event->data.note.note,event->data.note.velocity);
break;
case SND_SEQ_EVENT_NOTEOFF:
sendmidi(effect,0x90+event->data.note.channel,event->data.note.note,0);
//printf("Noteoff, channel: %d note: %d vol: %d\n",event->data.note.channel,event->data.note.note,event->data.note.velocity);
break;
case SND_SEQ_EVENT_KEYPRESS:
//printf("Keypress, channel: %d note: %d vol: %d\n",event->data.note.channel,event->data.note.note,event->data.note.velocity);
sendmidi(effect,0xa0+event->data.note.channel,event->data.note.note,event->data.note.velocity);
break;
case SND_SEQ_EVENT_CONTROLLER:
sendmidi(effect,0xb0+event->data.control.channel,event->data.control.param,event->data.control.value);
//printf("Control: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
break;
case SND_SEQ_EVENT_PITCHBEND:
{
int val=event->data.control.value + 0x2000;
sendmidi(effect,0xe0+event->data.control.channel,val&127,val>>7);
}
//printf("Pitch: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
break;
case SND_SEQ_EVENT_CHANPRESS:
//printf("chanpress: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
sendmidi(effect,0xc0+event->data.control.channel,event->data.control.value,0);
break;
case SND_SEQ_EVENT_PGMCHANGE:
//printf("pgmchange: %d %d %d\n",event->data.control.channel,event->data.control.param,event->data.control.value);
sendmidi(effect,0xc0+event->data.control.channel,event->data.control.value,0);
break;
default:
//printf("Unknown type: %d\n",event->type);
break;
}
}
return NULL;
}
void Midi2UdpThread::run()
{
QUdpSocket *udpSocket;
udpSocket = new QUdpSocket(0);
forever {
if (abort) {
delete udpSocket;
return;
}
if (poll(pfd, npfd, 250) > 0) {
// Get MIDI event
snd_seq_event_input(seq_handle, &midi_event);
long len = snd_midi_event_decode(eventparser, midimsg, MAX_MIDI_MESSAGE_LENGTH, midi_event);
if( len < 0 ) {
printf("midi2udp: Error decoding midi event!\n");
} else {
printf("midi2udp: got midi event: ");
for(int i=0; i<len; ++i) {
printf("0x%x ", midimsg[i]);
}
printf("\n");
// Send it over UDP
for(set<string>::iterator ip_it = ds_ips.begin(); ip_it != ds_ips.end(); ++ip_it)
{
QString to_((*ip_it).c_str());
printf("sending to %s\n", (*ip_it).c_str());
QHostAddress to(to_);
udpSocket->writeDatagram((char*)midimsg, len, to, DS_PORT);
}
}
snd_seq_free_event(midi_event);
snd_midi_event_reset_decode(eventparser);
}
}
}
/*
* Get the midi command,channel and parameters
*/
void ALSAMidiIn::getmidicmd(MidiCmdType &cmdtype,
unsigned char &cmdchan,
int *cmdparams)
{
snd_seq_event_t *midievent = NULL;
cmdtype = MidiNull;
if(inputok == false) {
/* The input is broken. We need to block for a while anyway so other
non-RT threads get a chance to run. */
sleep(1);
return;
}
snd_seq_event_input(midi_handle, &midievent);
if(midievent == NULL)
return;
switch(midievent->type) {
case SND_SEQ_EVENT_NOTEON:
cmdtype = MidiNoteON;
cmdchan = midievent->data.note.channel;
cmdparams[0] = midievent->data.note.note;
cmdparams[1] = midievent->data.note.velocity;
break;
case SND_SEQ_EVENT_NOTEOFF:
cmdtype = MidiNoteOFF;
cmdchan = midievent->data.note.channel;
cmdparams[0] = midievent->data.note.note;
break;
case SND_SEQ_EVENT_PITCHBEND:
cmdtype = MidiController;
cmdchan = midievent->data.control.channel;
cmdparams[0] = C_pitchwheel; //Pitch Bend
cmdparams[1] = midievent->data.control.value;
break;
case SND_SEQ_EVENT_CONTROLLER:
cmdtype = MidiController;
cmdchan = midievent->data.control.channel;
cmdparams[0] = getcontroller(midievent->data.control.param);
cmdparams[1] = midievent->data.control.value;
//fprintf(stderr,"t=%d val=%d\n",midievent->data.control.param,midievent->data.control.value);
break;
}
}
static ssize_t snd_rawmidi_virtual_read(snd_rawmidi_t *rmidi, void *buffer, size_t size)
{
snd_rawmidi_virtual_t *virt = rmidi->private_data;
ssize_t result = 0;
int size1, err;
while (size > 0) {
if (! virt->in_buf_ofs) {
err = snd_seq_event_input_pending(virt->handle, 1);
if (err <= 0 && result > 0)
return result;
err = snd_seq_event_input(virt->handle, &virt->in_event);
if (err < 0)
return result > 0 ? result : err;
if (virt->in_event->type == SND_SEQ_EVENT_SYSEX) {
virt->in_buf_ptr = virt->in_event->data.ext.ptr;
virt->in_buf_size = virt->in_event->data.ext.len;
} else {
virt->in_buf_ptr = virt->in_tmp_buf;
virt->in_buf_size = snd_midi_event_decode(virt->midi_event,
(unsigned char *)virt->in_tmp_buf,
sizeof(virt->in_tmp_buf),
virt->in_event);
}
if (virt->in_buf_size <= 0)
continue;
}
size1 = virt->in_buf_size - virt->in_buf_ofs;
if ((size_t)size1 > size) {
memcpy(buffer, virt->in_buf_ptr + virt->in_buf_ofs, size);
virt->in_buf_ofs += size;
result += size;
break;
}
memcpy(buffer, virt->in_buf_ptr + virt->in_buf_ofs, size1);
size -= size1;
result += size1;
buffer += size1;
virt->in_buf_ofs = 0;
}
return result;
}
// The main thread executive.
void run()
{
snd_seq_t *pAlsaSeq = m_pMidiDevice->alsaSeq();
if (pAlsaSeq == NULL)
return;
int nfds;
struct pollfd *pfds;
nfds = snd_seq_poll_descriptors_count(pAlsaSeq, POLLIN);
pfds = (struct pollfd *) alloca(nfds * sizeof(struct pollfd));
snd_seq_poll_descriptors(pAlsaSeq, pfds, nfds, POLLIN);
qxgeditMidiInputRpn xrpn;
m_bRunState = true;
int iPoll = 0;
while (m_bRunState && iPoll >= 0) {
// Wait for events...
iPoll = poll(pfds, nfds, 200);
// Timeout?
if (iPoll == 0)
xrpn.flush();
while (iPoll > 0) {
snd_seq_event_t *pEv = NULL;
snd_seq_event_input(pAlsaSeq, &pEv);
// Process input event - ...
// - enqueue to input track mapping;
if (!xrpn.process(pEv))
m_pMidiDevice->capture(pEv);
// snd_seq_free_event(pEv);
iPoll = snd_seq_event_input_pending(pAlsaSeq, 0);
}
// Process pending events...
while (xrpn.isPending()) {
snd_seq_event_t ev;
if (xrpn.dequeue(&ev))
m_pMidiDevice->capture(&ev);
}
}
}
/* TODO: ADD MIDI PANIC/ALL NOTES OFF */
int midi_callback() {
snd_seq_event_t *ev;
int l1;
do {
snd_seq_event_input(seq_handle, &ev);
switch (ev->type) {
case SND_SEQ_EVENT_NOTEON:
for (l1 = 0; l1 < POLY; l1++) {
if (!note_active[l1]) {
note[l1] = ev->data.note.note;
midichannel[l1] = ev->data.note.channel;
velocity[l1] = ev->data.note.velocity / 127;
attron(COLOR_PAIR(1));
printw("CH %2.0f ", midichannel[l1]+1);
printw("Note %3d ", note[l1]);
printw("Velocity %3.0f ", velocity[l1] * 127);
printw("Frequency %3.1f \n", ((note[l1]*FREQ_CHANNEL_WIDTH)+((128*FREQ_CHANNEL_WIDTH*midichannel[l1])+FREQ_START)) );
refresh();
attroff(COLOR_PAIR(1));
env_time[l1] = 0;
gate[l1] = 1;
note_active[l1] = 1;
break;
}
}
break;
case SND_SEQ_EVENT_NOTEOFF:
for (l1 = 0; l1 < POLY; l1++) {
if (gate[l1] && note_active[l1] && (note[l1] == ev->data.note.note)) {
printw("Note OFF %3d \n", note[l1]);
env_time[l1] = 0;
gate[l1] = 0;
}
}
break;
}
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
return (0);
}
int midi_action(snd_seq_t *seq_handle) {
snd_seq_event_t *ev;
int cnt = 0;
do {
snd_seq_event_input(seq_handle, &ev);
switch (ev->type) {
case SND_SEQ_EVENT_NOTEON:
if (channels && !(channels & (1<<ev->data.note.channel)))
break;
if (ev->data.note.velocity != 0) {
note_on(ev->data.note.note, ev->data.note.velocity);
cnt++;
}
}
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
return cnt;
}
int midi_callback() {
snd_seq_event_t *ev;
int l1;
do {
snd_seq_event_input(seq_handle, &ev);
switch (ev->type) {
case SND_SEQ_EVENT_PITCHBEND:
pitch = (double)ev->data.control.value / 8192.0;
break;
case SND_SEQ_EVENT_CONTROLLER:
if (ev->data.control.param == 1) {
modulation = (double)ev->data.control.value / 10.0;
}
break;
case SND_SEQ_EVENT_NOTEON:
for (l1 = 0; l1 < POLY; l1++) {
if (!note_active[l1]) {
note[l1] = ev->data.note.note;
velocity[l1] = ev->data.note.velocity / 127.0;
env_time[l1] = 0;
gate[l1] = 1;
note_active[l1] = 1;
break;
}
}
break;
case SND_SEQ_EVENT_NOTEOFF:
for (l1 = 0; l1 < POLY; l1++) {
if (gate[l1] && note_active[l1] && (note[l1] == ev->data.note.note)) {
env_time[l1] = 0;
gate[l1] = 0;
}
}
break;
}
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
return (0);
}
static
void alsa_seqmidi_read(alsa_midi_t *m, jack_nframes_t nframes)
{
alsa_seqmidi_t *self = (alsa_seqmidi_t*) m;
int res;
snd_seq_event_t *event;
struct process_info info;
if (!self->keep_walking)
return;
set_process_info(&info, self, PORT_INPUT, nframes);
jack_process(self, &info);
while ((res = snd_seq_event_input(self->seq, &event))>0) {
if (event->source.client == SND_SEQ_CLIENT_SYSTEM)
port_event(self, event);
else
input_event(self, event, &info);
}
}
static void midi_thread(void *userdata) {
MidiHardware *midi_hardware = reinterpret_cast<MidiHardware*>(userdata);
for (;;) {
snd_seq_event_t *event;
int err = snd_seq_event_input(midi_hardware->seq, &event);
if (midi_hardware->quit_flag)
return;
if (err < 0) {
if (err == ENOSPC) {
midi_hardware->on_buffer_overrun(midi_hardware);
} else {
// docs say ENOSPC is the only error that can occur in
// blocking mode.
panic("unexpected ALSA MIDI error: %s", snd_strerror(err));
}
continue;
}
if (event->source.client == midi_hardware->system_announce_device->client_id &&
event->source.port == midi_hardware->system_announce_device->port_id)
{
if (event->type == SND_SEQ_EVENT_PORT_START ||
event->type == SND_SEQ_EVENT_PORT_EXIT)
{
midi_hardware_refresh(midi_hardware);
}
} else {
for (int i = 0; i < midi_hardware->open_devices.length(); i += 1) {
GenesisMidiDevice *device = midi_hardware->open_devices.at(i);
if (device->client_id == event->source.client &&
device->port_id == event->source.port)
{
dispatch_event(device, event);
break;
}
}
}
}
}
static DrumNote*
get_note (void)
{
#if !MIDI_NOP
snd_seq_event_t *ev;
int err;
err = snd_seq_event_input (seq, &ev);
assert (err >= 0);
if (ev->type == SND_SEQ_EVENT_NOTEON)
{
DrumNote *note = g_malloc (sizeof (DrumNote));
note->drum = midi_note_to_drum (ev->data.note.note);
note->tick = ev->time.tick;
note->velocity = ev->data.note.velocity << (32 - 7);
return note;
}
#endif
return NULL;
}
int midi_read() {
snd_seq_event_t *ev;
int channel,value,note,velocity,param;
do {
snd_seq_event_input(seq_handle, &ev);
switch (ev->type) {
case SND_SEQ_EVENT_NOTEON:
channel = ev->data.note.channel;
note = ev->data.note.note & 0x7f;
velocity = ev->data.note.velocity;
note_on_action(channel,note,velocity);
break;
case SND_SEQ_EVENT_NOTEOFF:
channel = ev->data.note.channel;
note = ev->data.note.note;
velocity = ev->data.note.velocity;
note_off_action(channel,note,velocity);
break;
case SND_SEQ_EVENT_PGMCHANGE:
channel = ev->data.control.channel;
value = ev->data.control.value;
program_change_action(channel,value);
break;
case SND_SEQ_EVENT_CONTROLLER:
channel = ev->data.control.channel;
param = ev->data.control.param;
value = ev->data.control.value;
control_change_action(channel,param,value);
break;
}
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
return (0);
}
/* Handle MIDI input. To be called when poll() call in main loop indicates
* that data is available on our fd(s). */
void
midi_input(void)
{
int midi_status;
snd_seq_event_t *ev;
ssize_t evlen;
while (1)
{
midi_status = snd_seq_event_input(seq, &ev);
dprintf("MIDI input status : %d\n", midi_status);
if (midi_status < 0)
break;
evlen = snd_seq_event_length(ev);
dprintf("MIDI event length %d\n", evlen);
switch (ev->type) {
case SND_SEQ_EVENT_SYSEX:
dprintf("Sysex: length %d\n", ev->data.ext.len);
sysex_in(ev);
break;
case SND_SEQ_EVENT_CONTROLLER:
dprintf("CC: dest cli:port %d:%d, ch %d, param %d, val %d\n",
ev->dest.client, ev->dest.port, ev->data.control.channel + 1,
ev->data.control.param, ev->data.control.value);
int port = myport(ev->dest.port);
if (port < 0) break; /* port not found */
if (cc_receivers[port].cc_receiver) {
cc_receivers[port].cc_receiver(ev->data.control.channel,
ev->data.control.param,
ev->data.control.value);
}
break;
default:
break;
}
}
}
void midi_action(snd_seq_t *seq_handle) {
snd_seq_event_t *ev;
do {
snd_seq_event_input(seq_handle, &ev);
switch (ev->type) {
case SND_SEQ_EVENT_CONTROLLER:
printf(MIDI_FORMAT, MIDI_CONTROL, ev->data.control.channel, ev->data.control.value);
break;
case SND_SEQ_EVENT_PITCHBEND:
printf(MIDI_FORMAT, MIDI_PITCH_BEND, ev->data.control.channel, ev->data.control.value);
break;
case SND_SEQ_EVENT_NOTEON:
printf(MIDI_FORMAT, MIDI_NOTE_ON, ev->data.control.channel, ev->data.note.note);
break;
case SND_SEQ_EVENT_NOTEOFF:
printf(MIDI_FORMAT, MIDI_NOTE_OFF, ev->data.control.channel, ev->data.note.note);
break;
}
fflush(stdout); fflush(stderr);
snd_seq_free_event(ev);
} while (snd_seq_event_input_pending(seq_handle, 0) > 0);
}
