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);
}
int
midi_open(void)
{
if (snd_seq_open(&alsaClient, "hw", SND_SEQ_OPEN_DUPLEX, 0) < 0) {
ghss_debug(GDB_ERROR, ": failed to open ALSA sequencer interface");
return 0;
}
snd_seq_set_client_name(alsaClient, host_name);
alsa_client_id = snd_seq_client_id(alsaClient);
if ((alsa_port_id = snd_seq_create_simple_port
(alsaClient, "input",
SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE, SND_SEQ_PORT_TYPE_APPLICATION)) < 0) {
ghss_debug(GDB_ERROR, ": failed to create ALSA sequencer port");
return 0;
}
alsaClient_npfd = snd_seq_poll_descriptors_count(alsaClient, POLLIN);
alsaClient_pfd = (struct pollfd *)calloc(1, alsaClient_npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(alsaClient, alsaClient_pfd, alsaClient_npfd, POLLIN);
ghss_debug(GDB_ALWAYS, ": listening using ALSA MIDI");
return 1;
}
void AlsaMidiInputThread::run()
{
qDebug() << Q_FUNC_INFO << "begin";
struct pollfd* pfd = 0;
int npfd = 0;
m_mutex.lock();
m_running = true;
while (m_running == true)
{
if (m_changed == true)
{
// Poll descriptors must be re-evaluated
npfd = snd_seq_poll_descriptors_count(m_alsa, POLLIN);
pfd = (struct pollfd*) alloca(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(m_alsa, pfd, npfd, POLLIN);
m_changed = false;
}
m_mutex.unlock();
// Poll for MIDI events from the polled descriptors outside of mutex lock
if (poll(pfd, npfd, POLL_TIMEOUT_MS) > 0)
readEvent();
m_mutex.lock();
}
m_mutex.unlock();
qDebug() << Q_FUNC_INFO << "end";
}
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;
}
/* Returned structure pointer is allocated using malloc. */
struct polls *
midi_init_alsa(void)
{
struct polls *polls;
int npfd;
int synth_port, ctrlr_port;
int i;
if (snd_seq_open(&seq, "default", SND_SEQ_OPEN_DUPLEX, 0) < 0) {
dprintf("Couldn't open ALSA sequencer: %s\n", snd_strerror(errno));
return NULL;
}
snd_seq_set_client_name(seq, "Xtor");
client = snd_seq_client_id(seq);
if (client < 0) {
dprintf("Can't get client_id: %d\n", client);
return NULL;
}
dprintf("Client address %d\n", client);
synth_port = snd_seq_create_simple_port(seq, "Xtor synth port",
SND_SEQ_PORT_CAP_READ |
SND_SEQ_PORT_CAP_WRITE |
SND_SEQ_PORT_CAP_SUBS_READ |
SND_SEQ_PORT_CAP_SUBS_WRITE,
SND_SEQ_PORT_TYPE_APPLICATION);
if (synth_port < 0) {
dprintf("Couldn't create synth port: %s\n", snd_strerror(errno));
return NULL;
}
ports[SYNTH_PORT] = synth_port;
ctrlr_port = snd_seq_create_simple_port(seq, "Xtor controller port",
SND_SEQ_PORT_CAP_READ |
SND_SEQ_PORT_CAP_WRITE |
SND_SEQ_PORT_CAP_SUBS_READ |
SND_SEQ_PORT_CAP_SUBS_WRITE,
SND_SEQ_PORT_TYPE_APPLICATION);
if (ctrlr_port < 0) {
dprintf("Couldn't create controller port: %s\n", snd_strerror(errno));
return NULL;
}
ports[CTRLR_PORT] = ctrlr_port;
/* Fetch poll descriptor(s) for MIDI input (normally only one) */
npfd = snd_seq_poll_descriptors_count(seq, POLLIN);
polls = (struct polls *) malloc(sizeof(struct polls) +
npfd * sizeof(struct pollfd));
polls->npfd = npfd;
snd_seq_poll_descriptors(seq, polls->pollfds, npfd, POLLIN);
snd_seq_nonblock(seq, SND_SEQ_NONBLOCK);
return polls;
}
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);
}
};
/*
* Allocate and initiate a new MIDI event poller.
*/
struct pollfd *sequencer_poller_new(snd_seq_t *seq_handle,
int *npfd_ptr) {
struct pollfd *pfd;
/*
* Prepeare event polling on the MIDI input.
*/
*npfd_ptr = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
pfd = (struct pollfd *)malloc(*npfd_ptr * sizeof(struct pollfd));
snd_seq_poll_descriptors(seq_handle, pfd, *npfd_ptr, POLLIN);
return pfd;
}
int main (int argc, char *argv[]) {
int nfds, seq_nfds, l1;
struct pollfd *pfds;
if (argc < 6) {
fprintf(stderr, "LinzerSchnitteMIDI <hw:0,0,1> <attack> <decay> <sustain> <release>\n");
exit(1);
}
attack = atof(argv[2]);
decay = atof(argv[3]);
sustain = atof(argv[4]);
release = atof(argv[5]);
/* polyphony = atoi(argv[6]);
buffersize = atoi(argv[7]);
outputvolume = atoi(argv[8]);
firstnotefreq = atoi(argv[9]);
freqchannelwidth = atoi(argv[10]);
*/
buf = (short *) malloc (2 * sizeof (short) * BUFSIZE);
playback_handle = open_pcm(argv[1]);
seq_handle = open_seq();
seq_nfds = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
nfds = snd_pcm_poll_descriptors_count (playback_handle);
pfds = (struct pollfd *)alloca(sizeof(struct pollfd) * (seq_nfds + nfds));
snd_seq_poll_descriptors(seq_handle, pfds, seq_nfds, POLLIN);
snd_pcm_poll_descriptors (playback_handle, pfds+seq_nfds, nfds);
connect2MidiThroughPort(seq_handle);
for (l1 = 0; l1 < POLY; note_active[l1++] = 0);
while (1) {
if (poll (pfds, seq_nfds + nfds, 1000) > 0) {
for (l1 = 0; l1 < seq_nfds; l1++) {
if (pfds[l1].revents > 0) midi_callback();
}
for (l1 = seq_nfds; l1 < seq_nfds + nfds; l1++) {
if (pfds[l1].revents > 0) {
if (playback_callback(BUFSIZE) < BUFSIZE) {
fprintf (stderr, "xrun ! increase buffer \n");
snd_pcm_prepare(playback_handle);
}
}
}
}
}
snd_pcm_close (playback_handle);
snd_seq_close (seq_handle);
free(buf);
return (0);
}
static PyObject *
alsaseq_fd(PyObject *self, PyObject *args)
{
int npfd;
struct pollfd *pfd;
if (!PyArg_ParseTuple(args, "" ))
return NULL;
npfd = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
pfd = (struct pollfd *)alloca(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(seq_handle, pfd, npfd, POLLIN);
return PyInt_FromLong( pfd->fd );
}
void* ReadMidi(void* seq)
{
int nPfd;
struct pollfd* t_pfd;
nPfd = snd_seq_poll_descriptors_count(t_seq, POLLIN);
t_pfd = (struct pollfd*) alloca(nPfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(t_seq, t_pfd, nPfd, POLLIN);
while (zRun)
if (poll(t_pfd, nPfd, 100) > 0)
PrintMidiIn();
printf("\n[IN ALSA]->process communication shutdown ...\n");
}
void midi_thread(void *data){
snd_seq_t *seq_handle;
int npfd;
struct pollfd *pfd;
seq_handle = open_seq();
npfd = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
pfd = (struct pollfd *)alloca(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(seq_handle, pfd, npfd, POLLIN);
while (1) {
if (poll(pfd, npfd, 100000) > 0) {
midi_action(seq_handle);
}
}
}
int main (int argc, char *argv[]) {
int nfds, seq_nfds, l1;
struct pollfd *pfds;
if (argc < 10) {
fprintf(stderr, "miniFMsynth <device> <FM> <harmonic> <subharmonic> <transpose> <a> <d> <s> <r>\n");
exit(1);
}
modulation = atof(argv[2]);
harmonic = atoi(argv[3]);
subharmonic = atoi(argv[4]);
transpose = atoi(argv[5]);
attack = atof(argv[6]);
decay = atof(argv[7]);
sustain = atof(argv[8]);
release = atof(argv[9]);
pitch = 0;
buf = (short *) malloc (2 * sizeof (short) * BUFSIZE);
playback_handle = open_pcm(argv[1]);
seq_handle = open_seq();
seq_nfds = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
nfds = snd_pcm_poll_descriptors_count (playback_handle);
pfds = (struct pollfd *)alloca(sizeof(struct pollfd) * (seq_nfds + nfds));
snd_seq_poll_descriptors(seq_handle, pfds, seq_nfds, POLLIN);
snd_pcm_poll_descriptors (playback_handle, pfds+seq_nfds, nfds);
for (l1 = 0; l1 < POLY; note_active[l1++] = 0);
while (1) {
if (poll (pfds, seq_nfds + nfds, 1000) > 0) {
for (l1 = 0; l1 < seq_nfds; l1++) {
if (pfds[l1].revents > 0) midi_callback();
}
for (l1 = seq_nfds; l1 < seq_nfds + nfds; l1++) {
if (pfds[l1].revents > 0) {
if (playback_callback(BUFSIZE) < BUFSIZE) {
fprintf (stderr, "xrun !\n");
snd_pcm_prepare(playback_handle);
}
}
}
}
}
snd_pcm_close (playback_handle);
snd_seq_close (seq_handle);
free(buf);
return (0);
}
int main(int argc, char *argv[]) {
snd_seq_t *seq_handle;
int npfd;
struct pollfd *pfd;
seq_handle = open_seq();
npfd = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
pfd = (struct pollfd *)alloca(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(seq_handle, pfd, npfd, POLLIN);
fprintf(stderr, "COMMAND:CHANNEL:NOTE\nCommands are described on http://www.ec.vanderbilt.edu/computermusic/musc216site/MIDI.Commands.html\n\n");
while (1) {
if (poll(pfd, npfd, 100000) > 0) {
midi_action(seq_handle);
}
}
}
// 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);
}
}
}
static PyObject *
alsaseq_fd(PyObject *self, PyObject *args)
{
int npfd;
struct pollfd *pfd;
if (!PyArg_ParseTuple(args, "" ))
return NULL;
if (!seq_handle) {
PyErr_SetString(PyExc_RuntimeError, "Must initialize module with alsaseq.client() before using it");
return NULL;
}
npfd = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
pfd = (struct pollfd *)alloca(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(seq_handle, pfd, npfd, POLLIN);
return PyInt_FromLong( pfd->fd );
}
bool Midi2UdpThread::go()
{
// Initialize midi port
bool res = initSeq();
if(res == false) {
return false;
}
// start expecing MIDI events
npfd = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
pfd = (struct pollfd *)malloc(npfd * sizeof(struct pollfd));
snd_seq_poll_descriptors(seq_handle, pfd, npfd, POLLIN);
// run thread
if(!isRunning()) {
start(LowPriority);
}
return true;
}
void *vj_midi_new(void *mw)
{
vmidi_t *v = (vmidi_t*) vj_calloc(sizeof(vmidi_t));
int portid = 0;
if( snd_seq_open( &(v->sequencer), "hw", SND_SEQ_OPEN_DUPLEX | SND_SEQ_NONBLOCK, 0 ) < 0 )
{
veejay_msg(0, "Error opening ALSA sequencer");
return v;
}
snd_seq_set_client_name( v->sequencer, "Veejay" );
if( (portid = snd_seq_create_simple_port( v->sequencer, "Reloaded",
SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE ,
SND_SEQ_PORT_TYPE_APPLICATION )) < 0 )
{
veejay_msg(0, "Error creating sequencer port");
return v;
}
v->npfd = snd_seq_poll_descriptors_count( v->sequencer, POLLIN );
if( v->npfd <= 0 )
{
veejay_msg(0,"Unable to poll in from sequencer");
return v;
}
v->pfd = (struct pollfd *) vj_calloc( v->npfd * sizeof( struct pollfd ));
v->mw = mw;
v->learn = 0;
v->vims = vpn(VEVO_ANONYMOUS_PORT);
v->active = 1;
snd_seq_poll_descriptors( v->sequencer, v->pfd, v->npfd, POLLIN );
veejay_msg(VEEJAY_MSG_INFO, "MIDI listener active! Type 'aconnect -o' to see where to connect to.");
veejay_msg(VEEJAY_MSG_INFO, "For example: $ aconnect 128 129");
return (void*) v;
}
int main( int argc, char *argv[] )
{
jack_client_t *jackClient;
snd_seq_t *seqport;
struct pollfd *pfd;
int npfd;
snd_seq_event_t *midievent;
int channel, midiport;
int note, length, i, j, minpos;
double freq, avg, vol, scale, min;
double *tempstring;
puts( "SO-KL5 v.1.2 by 50m30n3 2009-2011" );
if( argc > 1 )
channel = atoi( argv[1] );
else
channel = 0;
signal( SIGINT, sig_exit );
signal( SIGTERM, sig_exit );
puts( "Connecting to Jack Audio Server" );
jackClient = jack_client_open( "SO-KL5", JackNoStartServer, NULL );
if( jackClient == NULL )
{
fputs( "Cannot connect to Jack Server\n", stderr );
return 1;
}
jack_on_shutdown( jackClient, jack_shutdown, 0 );
outport = jack_port_register( jackClient, "output", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput | JackPortIsTerminal, 0 );
jack_set_process_callback( jackClient, process, 0 );
samplerate = jack_get_sample_rate( jackClient );
puts( "Initializing synth parameters" );
sustain = 0;
cutoff = 64;
resonance = 100;
attack = 64;
volume = 100;
fcutoff = (cutoff+5.0)/400.0;
sattack = (attack+5.0)/800.0;
freso = (resonance/160.0)*(1.0-fcutoff);
ssustain = 0.6+pow( sustain/127.0, 0.4)*0.4;
for( note=0; note<NUMNOTES; note++ )
{
freq = 440.0*pow( 2.0, (note+BASENOTE-69) / 12.0 );
stringcutoff[note] = 0.5 + pow( (double)note / (double)NUMNOTES, 0.5 ) * 0.45;
length = round( (double)samplerate / freq );
stringlength[note] = length;
strings[note] = malloc( length * sizeof( double ) );
if( strings[note] == NULL )
{
fputs( "Error allocating memory\n", stderr );
return 1;
}
for( i=0; i<length; i++ )
{
strings[note][i] = 0.0;
}
stringpos[note] = 0;
status[note] = 0;
}
freq = 440.0*pow( 2.0, (BASENOTE-69) / 12.0 );
length = (double)samplerate / freq;
tempstring = malloc( length * sizeof( double ) );
if( tempstring == NULL )
{
fputs( "Error allocating memory\n", stderr );
return 1;
}
lpval = lplast = 0.0;
jack_activate( jackClient );
printf( "Listening on MIDI channel %i\n", channel );
if( snd_seq_open( &seqport, "default", SND_SEQ_OPEN_INPUT, 0 ) < 0 )
{
fputs( "Cannot connect to ALSA sequencer\n", stderr );
return 1;
}
snd_seq_set_client_name( seqport, "SO-KL5" );
midiport = snd_seq_create_simple_port( seqport, "input",
SND_SEQ_PORT_CAP_WRITE|SND_SEQ_PORT_CAP_SUBS_WRITE,
SND_SEQ_PORT_TYPE_APPLICATION );
if( midiport < 0 )
{
fputs( "Cannot create ALSA sequencer port\n", stderr );
return 1;
}
npfd = snd_seq_poll_descriptors_count( seqport, POLLIN );
pfd = (struct pollfd *)malloc( npfd * sizeof( struct pollfd ) );
snd_seq_poll_descriptors( seqport, pfd, npfd, POLLIN );
done = 0;
while( ! done )
{
if( poll( pfd, npfd, 100000 ) > 0 )
{
do
{
snd_seq_event_input( seqport, &midievent );
if( ( midievent->type == SND_SEQ_EVENT_NOTEON ) && ( midievent->data.note.channel == channel ) )
{
note = midievent->data.note.note;
if( ( note >= BASENOTE ) && ( note < BASENOTE+NUMNOTES ) )
{
note -= BASENOTE;
status[note] = 1;
for( i=0; i<stringlength[note]; i++ )
{
tempstring[i] = ((double)rand()/(double)RAND_MAX)*2.0-1.0;
}
freq = stringcutoff[note] * 0.25 + midievent->data.note.velocity/127.0 * 0.2 + sattack + 0.1;
for( j=0; j<30; j++ )
{
tempstring[0] = tempstring[0]*freq + tempstring[stringlength[note]-1]*(1.0-freq);
for( i=1; i<stringlength[note]; i++ )
{
tempstring[i] = tempstring[i]*freq + tempstring[(i-1)%stringlength[note]]*(1.0-freq);
}
}
avg = 0.0;
for( i=0; i<stringlength[note]; i++ )
{
avg += tempstring[i];
}
avg /= stringlength[note];
scale = 0.0;
for( i=0; i<stringlength[note]; i++ )
{
tempstring[i] -= avg;
if( fabs( tempstring[i] ) > scale )
scale = fabs( tempstring[i] );
}
min = 10.0;
minpos = 0;
for( i=0; i<stringlength[note]; i++ )
{
tempstring[i] /= scale;
if( fabs( tempstring[i] ) + fabs( tempstring[i] - tempstring[i-1] ) * 5.0 < min )
{
min = fabs( tempstring[i] ) + fabs( tempstring[i] - tempstring[i-1] ) * 5.0;
minpos = i;
}
}
vol = midievent->data.note.velocity/256.0;
for( i=0; i<stringlength[note]; i++ )
{
strings[note][(stringpos[note]+i)%stringlength[note]] += tempstring[(i+minpos)%stringlength[note]]*vol;
}
}
}
else if( ( midievent->type == SND_SEQ_EVENT_NOTEOFF ) && ( midievent->data.note.channel == channel ) )
{
note = midievent->data.note.note;
if( ( note >= BASENOTE ) && ( note < BASENOTE+NUMNOTES ) )
{
note -= BASENOTE;
status[note] = 0;
}
}
else if( ( midievent->type == SND_SEQ_EVENT_CONTROLLER ) && ( midievent->data.control.channel == channel ) )
{
if( midievent->data.control.param == 74 )
{
cutoff = midievent->data.control.value;
fcutoff = (cutoff+5.0)/400.0;
printf( "Cutoff: %i \r", cutoff );
fflush( stdout );
}
else if( midievent->data.control.param == 71 )
{
resonance = midievent->data.control.value;
freso = (resonance/140.0)*(1.0-fcutoff);
printf( "Resonance: %i \r", resonance );
fflush( stdout );
}
else if( midievent->data.control.param == 73 )
{
attack = midievent->data.control.value;
sattack = (attack+5.0)/800.0;
printf( "Attack: %i \r", attack );
fflush( stdout );
}
else if( midievent->data.control.param == 7 )
{
volume = midievent->data.control.value;
printf( "Volume: %i \r", volume );
fflush( stdout );
}
else if( ( midievent->data.control.param == 64 ) || ( midievent->data.control.param == 1 ) )
{
sustain = midievent->data.control.value;
ssustain = 0.6+pow( sustain/127.0, 0.4)*0.4;
printf( "Sustain: %i \r", sustain );
fflush( stdout );
}
}
snd_seq_free_event( midievent );
}
while( snd_seq_event_input_pending( seqport, 0 ) > 0 );
}
}
free( pfd );
snd_seq_delete_port( seqport, midiport );
snd_seq_close( seqport );
jack_deactivate( jackClient );
puts( "Freeing data" );
for( note=0; note<NUMNOTES; note++ )
{
free( strings[note] );
}
free( tempstring );
jack_port_unregister( jackClient, outport );
jack_client_close( jackClient );
return 0;
}
void
mastermidibus::init()
{
#ifdef HAVE_LIBASOUND
snd_seq_client_info_t * cinfo; /* client info */
snd_seq_port_info_t * pinfo; /* port info */
snd_seq_client_info_alloca(&cinfo);
snd_seq_client_info_set_client(cinfo, -1);
if (global_manual_alsa_ports)
{
int num_buses = 16;
for (int i = 0; i < num_buses; ++i)
{
m_buses_out[i] = new midibus
(
snd_seq_client_id(m_alsa_seq), m_alsa_seq, i+1, m_queue
);
m_buses_out[i]->init_out_sub();
m_buses_out_active[i] = true;
m_buses_out_init[i] = true;
}
m_num_out_buses = num_buses;
m_num_in_buses = 1; /* only one in, or 0? */
m_buses_in[0] = new midibus
(
snd_seq_client_id(m_alsa_seq), m_alsa_seq, m_num_in_buses, m_queue
);
m_buses_in[0]->init_in_sub();
m_buses_in_active[0] = true;
m_buses_in_init[0] = true;
}
else
{
/* While the next client for the sequencer is available */
while (snd_seq_query_next_client(m_alsa_seq, cinfo) >= 0)
{
int client = snd_seq_client_info_get_client(cinfo);
snd_seq_port_info_alloca(&pinfo); /* will fill pinfo */
snd_seq_port_info_set_client(pinfo, client);
snd_seq_port_info_set_port(pinfo, -1);
while (snd_seq_query_next_port(m_alsa_seq, pinfo) >= 0)
{
/* While the next port is available, get its capability */
int cap = snd_seq_port_info_get_capability(pinfo);
if
(
snd_seq_client_id(m_alsa_seq) !=
snd_seq_port_info_get_client(pinfo) &&
snd_seq_port_info_get_client(pinfo) != SND_SEQ_CLIENT_SYSTEM
)
{
if /* the outputs */
(
(cap & SND_SEQ_PORT_CAP_SUBS_WRITE) != 0 &&
snd_seq_client_id(m_alsa_seq) !=
snd_seq_port_info_get_client(pinfo)
)
{
m_buses_out[m_num_out_buses] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_out_buses,
m_queue
);
if (m_buses_out[m_num_out_buses]->init_out())
{
m_buses_out_active[m_num_out_buses] = true;
m_buses_out_init[m_num_out_buses] = true;
}
else
m_buses_out_init[m_num_out_buses] = true;
m_num_out_buses++;
}
if /* the inputs */
(
(cap & SND_SEQ_PORT_CAP_SUBS_READ) != 0 &&
snd_seq_client_id(m_alsa_seq) !=
snd_seq_port_info_get_client(pinfo)
)
{
m_buses_in[m_num_in_buses] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_in_buses,
m_queue
);
m_buses_in_active[m_num_in_buses] = true;
m_buses_in_init[m_num_in_buses] = true;
m_num_in_buses++;
}
}
}
} /* end loop for clients */
}
set_bpm(c_bpm);
set_ppqn(c_ppqn);
/*
* Get the number of MIDI input poll file descriptors.
*/
m_num_poll_descriptors = snd_seq_poll_descriptors_count(m_alsa_seq, POLLIN);
m_poll_descriptors = new pollfd[m_num_poll_descriptors]; /* allocate into */
snd_seq_poll_descriptors /* get input poll descriptors */
(
m_alsa_seq, m_poll_descriptors, m_num_poll_descriptors, POLLIN
);
set_sequence_input(false, nullptr);
/* Set the input and output buffer sizes */
snd_seq_set_output_buffer_size(m_alsa_seq, c_midibus_output_size);
snd_seq_set_input_buffer_size(m_alsa_seq, c_midibus_input_size);
m_bus_announce = new midibus
(
snd_seq_client_id(m_alsa_seq),
SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_ANNOUNCE,
m_alsa_seq, "system", "annouce", 0, m_queue
);
m_bus_announce->set_input(true);
for (int i = 0; i < m_num_out_buses; i++)
set_clock(i, m_init_clock[i]);
for (int i = 0; i < m_num_in_buses; i++)
set_input(i, m_init_input[i]);
#endif // HAVE_LIBASOUND
}
void
mastermidibus::port_start (int a_client, int a_port)
{
#ifdef HAVE_LIBASOUND
automutex locker(m_mutex);
snd_seq_client_info_t * cinfo; /* client info */
snd_seq_client_info_alloca(&cinfo);
snd_seq_get_any_client_info(m_alsa_seq, a_client, cinfo);
snd_seq_port_info_t * pinfo; /* port info */
snd_seq_port_info_alloca(&pinfo);
snd_seq_get_any_port_info(m_alsa_seq, a_client, a_port, pinfo);
int cap = snd_seq_port_info_get_capability(pinfo); /* get its capability */
if (snd_seq_client_id(m_alsa_seq) != snd_seq_port_info_get_client(pinfo))
{
if /* the outputs */
(
(cap & (SND_SEQ_PORT_CAP_SUBS_WRITE | SND_SEQ_PORT_CAP_WRITE)) ==
(SND_SEQ_PORT_CAP_SUBS_WRITE | SND_SEQ_PORT_CAP_WRITE) &&
snd_seq_client_id(m_alsa_seq) != snd_seq_port_info_get_client(pinfo)
)
{
bool replacement = false;
int bus_slot = m_num_out_buses;
for (int i = 0; i < m_num_out_buses; i++)
{
if
(
m_buses_out[i]->get_client() == a_client &&
m_buses_out[i]->get_port() == a_port &&
m_buses_out_active[i] == false
)
{
replacement = true;
bus_slot = i;
}
}
m_buses_out[bus_slot] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_out_buses,
m_queue
);
m_buses_out[bus_slot]->init_out();
m_buses_out_active[bus_slot] = true;
m_buses_out_init[bus_slot] = true;
if (! replacement)
m_num_out_buses++;
}
if /* the inputs */
(
(cap & (SND_SEQ_PORT_CAP_SUBS_READ | SND_SEQ_PORT_CAP_READ)) ==
(SND_SEQ_PORT_CAP_SUBS_READ | SND_SEQ_PORT_CAP_READ) &&
snd_seq_client_id(m_alsa_seq) != snd_seq_port_info_get_client(pinfo)
)
{
bool replacement = false;
int bus_slot = m_num_in_buses;
for (int i = 0; i < m_num_in_buses; i++)
{
if
(
m_buses_in[i]->get_client() == a_client &&
m_buses_in[i]->get_port() == a_port &&
m_buses_in_active[i] == false
)
{
replacement = true;
bus_slot = i;
}
}
m_buses_in[bus_slot] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_in_buses,
m_queue
);
m_buses_in_active[bus_slot] = true;
m_buses_in_init[bus_slot] = true;
if (! replacement)
m_num_in_buses++;
}
} /* end loop for clients */
/*
* Get the number of MIDI input poll file descriptors.
*/
m_num_poll_descriptors = snd_seq_poll_descriptors_count(m_alsa_seq, POLLIN);
m_poll_descriptors = new pollfd[m_num_poll_descriptors]; /* allocate info */
snd_seq_poll_descriptors /* get input descriptors */
(
m_alsa_seq, m_poll_descriptors, m_num_poll_descriptors, POLLIN
);
#endif // HAVE_LIBASOUND
}
void
mastermidibus::init( )
{
/* client info */
snd_seq_client_info_t *cinfo;
/* port info */
snd_seq_port_info_t *pinfo;
int client;
snd_seq_client_info_alloca(&cinfo);
snd_seq_client_info_set_client(cinfo, -1);
//printf( "global_ports %d\n", global_manual_alsa_ports );
if ( global_manual_alsa_ports )
{
int num_buses = 16;
for( int i=0; i<num_buses; ++i )
{
m_buses_out[i] =
new midibus( snd_seq_client_id( m_alsa_seq ), m_alsa_seq, i+1, m_queue );
m_buses_out[i]->init_out_sub();
m_buses_out_active[i] = true;
m_buses_out_init[i] = true;
}
m_num_out_buses = num_buses;
/* only one in */
m_buses_in[0] =
new midibus( snd_seq_client_id( m_alsa_seq ),
m_alsa_seq,
m_num_in_buses, m_queue);
m_buses_in[0]->init_in_sub();
m_buses_in_active[0] = true;
m_buses_in_init[0] = true;
m_num_in_buses = 1;
}
else
{
/* while the next client one the sequencer is avaiable */
while (snd_seq_query_next_client(m_alsa_seq, cinfo) >= 0){
/* get client from cinfo */
client = snd_seq_client_info_get_client(cinfo);
/* fill pinfo */
snd_seq_port_info_alloca(&pinfo);
snd_seq_port_info_set_client(pinfo, client);
snd_seq_port_info_set_port(pinfo, -1);
/* while the next port is avail */
while (snd_seq_query_next_port(m_alsa_seq, pinfo) >= 0 ){
/* get its capability */
int cap = snd_seq_port_info_get_capability(pinfo);
if ( snd_seq_client_id( m_alsa_seq ) != snd_seq_port_info_get_client(pinfo) &&
snd_seq_port_info_get_client(pinfo) != SND_SEQ_CLIENT_SYSTEM){
/* the outs */
if ( (cap & SND_SEQ_PORT_CAP_SUBS_WRITE) != 0 &&
snd_seq_client_id( m_alsa_seq ) != snd_seq_port_info_get_client(pinfo)){
m_buses_out[m_num_out_buses] =
new midibus( snd_seq_client_id( m_alsa_seq ),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_out_buses, m_queue );
if ( m_buses_out[m_num_out_buses]->init_out() ){
m_buses_out_active[m_num_out_buses] = true;
m_buses_out_init[m_num_out_buses] = true;
} else {
m_buses_out_init[m_num_out_buses] = true;
}
m_num_out_buses++;
}
/* the ins */
if ( (cap & SND_SEQ_PORT_CAP_SUBS_READ) != 0 &&
snd_seq_client_id( m_alsa_seq ) != snd_seq_port_info_get_client(pinfo)){
m_buses_in[m_num_in_buses] =
new midibus( snd_seq_client_id( m_alsa_seq ),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_in_buses, m_queue);
//if ( m_buses_in[m_num_in_buses]->init_in() ){
m_buses_in_active[m_num_in_buses] = true;
m_buses_in_init[m_num_in_buses] = true;
//} else {
//m_buses_in_init[m_num_in_buses] = true;
//}
m_num_in_buses++;
}
}
}
} /* end loop for clients */
}
set_bpm( c_bpm );
set_ppqn( c_ppqn );
/* midi input */
/* poll descriptors */
/* get number of file descriptors */
m_num_poll_descriptors = snd_seq_poll_descriptors_count(m_alsa_seq, POLLIN);
/* allocate into */
m_poll_descriptors = new pollfd[m_num_poll_descriptors];
/* get descriptors */
snd_seq_poll_descriptors(m_alsa_seq,
m_poll_descriptors,
m_num_poll_descriptors,
POLLIN);
set_sequence_input( false, NULL );
/* sizes */
snd_seq_set_output_buffer_size(m_alsa_seq, c_midibus_output_size );
snd_seq_set_input_buffer_size(m_alsa_seq, c_midibus_input_size );
m_bus_announce =
new midibus( snd_seq_client_id( m_alsa_seq ),
SND_SEQ_CLIENT_SYSTEM,
SND_SEQ_PORT_SYSTEM_ANNOUNCE,
m_alsa_seq,
"system","annouce",
0, m_queue);
m_bus_announce->set_input(true);
for ( int i=0; i<m_num_out_buses; i++ )
set_clock(i,m_init_clock[i]);
for ( int i=0; i<m_num_in_buses; i++ )
set_input(i,m_init_input[i]);
}
void
mastermidibus::port_start( int a_client, int a_port )
{
lock();
/* client info */
snd_seq_client_info_t *cinfo;
snd_seq_client_info_alloca(&cinfo);
snd_seq_get_any_client_info( m_alsa_seq, a_client, cinfo );
/* port info */
snd_seq_port_info_t *pinfo;
/* fill pinfo */
snd_seq_port_info_alloca(&pinfo);
snd_seq_get_any_port_info( m_alsa_seq, a_client, a_port, pinfo );
/* get its capability */
int cap = snd_seq_port_info_get_capability(pinfo);
if ( snd_seq_client_id( m_alsa_seq ) != snd_seq_port_info_get_client(pinfo)){
/* the outs */
if ( (cap & (SND_SEQ_PORT_CAP_SUBS_WRITE | SND_SEQ_PORT_CAP_WRITE ))
== (SND_SEQ_PORT_CAP_SUBS_WRITE | SND_SEQ_PORT_CAP_WRITE )
&& snd_seq_client_id( m_alsa_seq ) != snd_seq_port_info_get_client(pinfo)){
bool replacement = false;
int bus_slot = m_num_out_buses;
for( int i=0; i< m_num_out_buses; i++ ){
if( m_buses_out[i]->get_client() == a_client &&
m_buses_out[i]->get_port() == a_port &&
m_buses_out_active[i] == false ){
replacement = true;
bus_slot = i;
}
}
m_buses_out[bus_slot] =
new midibus( snd_seq_client_id( m_alsa_seq ),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_out_buses, m_queue );
m_buses_out[bus_slot]->init_out();
m_buses_out_active[bus_slot] = true;
m_buses_out_init[bus_slot] = true;
if ( !replacement ){
m_num_out_buses++;
}
}
/* the ins */
if ( (cap & (SND_SEQ_PORT_CAP_SUBS_READ | SND_SEQ_PORT_CAP_READ ))
== (SND_SEQ_PORT_CAP_SUBS_READ | SND_SEQ_PORT_CAP_READ )
&& snd_seq_client_id( m_alsa_seq ) != snd_seq_port_info_get_client(pinfo)){
bool replacement = false;
int bus_slot = m_num_in_buses;
for( int i=0; i< m_num_in_buses; i++ ){
if( m_buses_in[i]->get_client() == a_client &&
m_buses_in[i]->get_port() == a_port &&
m_buses_in_active[i] == false ){
replacement = true;
bus_slot = i;
}
}
//printf( "in [%d] [%d]\n", replacement, bus_slot );
m_buses_in[bus_slot] =
new midibus( snd_seq_client_id( m_alsa_seq ),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_in_buses, m_queue);
//m_buses_in[bus_slot]->init_in();
m_buses_in_active[bus_slot] = true;
m_buses_in_init[bus_slot] = true;
if ( !replacement ){
m_num_in_buses++;
}
}
}
/* end loop for clients */
/* midi input */
/* poll descriptors */
/* get number of file descriptors */
m_num_poll_descriptors = snd_seq_poll_descriptors_count(m_alsa_seq, POLLIN);
/* allocate into */
m_poll_descriptors = new pollfd[m_num_poll_descriptors];
/* get descriptors */
snd_seq_poll_descriptors(m_alsa_seq,
m_poll_descriptors,
m_num_poll_descriptors,
POLLIN);
unlock();
}
/** new_aubio_alsa_seq_driver */
aubio_midi_driver_t* new_aubio_alsa_seq_driver(//aubio_settings_t* settings,
handle_midi_event_func_t handler, void* data)
{
int i, err;
aubio_alsa_seq_driver_t* dev; /**< object to return */
pthread_attr_t attr; /**< sequencer thread */
int sched = SCHED_FIFO; /**< default scheduling policy */
struct sched_param priority; /**< scheduling priority settings */
int count; /**< number of MIDI file descriptors */
struct pollfd *pfd = NULL; /**< poll file descriptor array (copied in dev->pfd) */
char* device = NULL; /**< the device name */
char* id = NULL;
char full_id[64];
char full_name[64];
/* not much use doing anything */
if (handler == NULL) {
AUBIO_ERR( "Invalid argument");
return NULL;
}
/* allocate the device */
dev = AUBIO_NEW(aubio_alsa_seq_driver_t);
if (dev == NULL) {
AUBIO_ERR( "Out of memory");
return NULL;
}
AUBIO_MEMSET(dev, 0, sizeof(aubio_alsa_seq_driver_t));
dev->seq_port = -1;
dev->driver.data = data;
dev->driver.handler = handler;
/* get the device name. if none is specified, use the default device. */
//aubio_settings_getstr(settings, "midi.alsa_seq.device", &device);
if (device == NULL) {
device = "default";
}
/* open the sequencer INPUT only, non-blocking */
//if ((err = snd_seq_open(&dev->seq_handle, device, SND_SEQ_OPEN_INPUT,
if ((err = snd_seq_open(&dev->seq_handle, device, SND_SEQ_OPEN_DUPLEX,
SND_SEQ_NONBLOCK)) < 0) {
AUBIO_ERR( "Error opening ALSA sequencer");
goto error_recovery;
}
/* get # of MIDI file descriptors */
count = snd_seq_poll_descriptors_count(dev->seq_handle, POLLIN);
if (count > 0) { /* make sure there are some */
pfd = AUBIO_MALLOC(sizeof (struct pollfd) * count);
dev->pfd = AUBIO_MALLOC(sizeof (struct pollfd) * count);
/* grab file descriptor POLL info structures */
count = snd_seq_poll_descriptors(dev->seq_handle, pfd, count, POLLIN);
}
for (i = 0; i < count; i++) { /* loop over file descriptors */
/* copy the input FDs */
if (pfd[i].events & POLLIN) { /* use only the input FDs */
dev->pfd[dev->npfd].fd = pfd[i].fd;
dev->pfd[dev->npfd].events = POLLIN;
dev->pfd[dev->npfd].revents = 0;
dev->npfd++;
}
}
AUBIO_FREE(pfd);
//aubio_settings_getstr(settings, "midi.alsa_seq.id", &id);
if (id != NULL) {
if (AUBIO_STRCMP(id, "pid") == 0) {
snprintf(full_id, 64, "aubio (%d)", getpid());
snprintf(full_name, 64, "aubio_port (%d)", getpid());
} else {
snprintf(full_id, 64, "aubio (%s)", id);
snprintf(full_name, 64, "aubio_port (%s)", id);
}
} else {
snprintf(full_id, 64, "aubio");
snprintf(full_name, 64, "aubio_port");
}
/* set the client name */
snd_seq_set_client_name (dev->seq_handle, full_id);
if ((dev->seq_port = snd_seq_create_simple_port (dev->seq_handle,
full_name,
SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE |
SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ |
SND_SEQ_PORT_CAP_DUPLEX,
SND_SEQ_PORT_TYPE_APPLICATION)) < 0)
{
AUBIO_ERR( "Error creating ALSA sequencer port");
goto error_recovery;
}
dev->status = AUBIO_MIDI_READY;
/* create the midi thread */
if (pthread_attr_init(&attr)) {
AUBIO_ERR( "Couldn't initialize midi thread attributes");
goto error_recovery;
}
/* use fifo scheduling. if it fails, use default scheduling. */
while (1) {
err = pthread_attr_setschedpolicy(&attr, sched);
if (err) {
AUBIO_MSG( "Couldn't set high priority scheduling for the MIDI input");
if (sched == SCHED_FIFO) {
sched = SCHED_OTHER;
continue;
} else {
AUBIO_ERR( "Couldn't set scheduling policy.");
goto error_recovery;
}
}
/* SCHED_FIFO will not be active without setting the priority */
priority.sched_priority = (sched == SCHED_FIFO) ? ALSA_SEQ_SCHED_PRIORITY : 0;
pthread_attr_setschedparam (&attr, &priority);
err = pthread_create(&dev->thread, &attr, aubio_alsa_seq_run, (void*) dev);
if (err) {
AUBIO_ERR( "Couldn't set high priority scheduling for the MIDI input");
if (sched == SCHED_FIFO) {
sched = SCHED_OTHER;
continue;
} else {
//AUBIO_LOG(AUBIO_PANIC, "Couldn't create the midi thread.");
AUBIO_ERR( "Couldn't create the midi thread.");
goto error_recovery;
}
}
break;
}
return (aubio_midi_driver_t*) dev;
error_recovery:
del_aubio_alsa_seq_driver((aubio_midi_driver_t*) dev);
return NULL;
}
int main (int argc, char *argv[]) {
int nfds, seq_nfds, l1;
//int key;
//key=0;
char *hwdevice;
struct pollfd *pfds;
/*
if (argc < 2) {
fprintf(stderr, "LinzerSchnitteMIDI <hw:0,0,1> <attack> <decay> <sustain> <release>\n");
exit(1);
}
*/
initscr(); /* start the curses setup */
atexit(do_endwin);
keypad(stdscr, TRUE);
noecho();
scrollok(stdscr, TRUE);
printw("Welcome to LinzerSchnitte\n");
refresh();
start_color();
init_pair(1, COLOR_RED, COLOR_BLACK); /* end the curses setup */
/* Set default */
hwdevice = "hw:0,0,1";
attack = 0.001;
decay = 0.001;
sustain = 1;
release = 0.001;
if (argc > 1) {
hwdevice = argv[1];
}
/* attack = atof(argv[2]);
decay = atof(argv[3]);
sustain = atof(argv[4]);
release = atof(argv[5]);
*/
buf = (short *) malloc (2 * sizeof (short) * BUFSIZE);
playback_handle = open_pcm(hwdevice);
seq_handle = open_seq();
seq_nfds = snd_seq_poll_descriptors_count(seq_handle, POLLIN);
nfds = snd_pcm_poll_descriptors_count (playback_handle);
pfds = (struct pollfd *)alloca(sizeof(struct pollfd) * (seq_nfds + nfds));
snd_seq_poll_descriptors(seq_handle, pfds, seq_nfds, POLLIN);
snd_pcm_poll_descriptors (playback_handle, pfds+seq_nfds, nfds);
connect2MidiThroughPort(seq_handle);
for (l1 = 0; l1 < POLY; note_active[l1++] = 0);
while (1) {
if (poll (pfds, seq_nfds + nfds, 1000) > 0) {
for (l1 = 0; l1 < seq_nfds; l1++) {
if (pfds[l1].revents > 0) midi_callback();
}
for (l1 = seq_nfds; l1 < seq_nfds + nfds; l1++) {
if (pfds[l1].revents > 0) {
if (playback_callback(BUFSIZE) < BUFSIZE) {
fprintf (stderr, "xrun ! increase buffer \n");
snd_pcm_prepare(playback_handle);
}
}
}
}
}
snd_pcm_close (playback_handle);
snd_seq_close (seq_handle);
free(buf);
return (0);
}
void
mastermidibus::init (int ppqn)
{
#ifdef SEQ64_HAVE_LIBASOUND
snd_seq_client_info_t * cinfo; /* client info */
snd_seq_port_info_t * pinfo; /* port info */
snd_seq_client_info_alloca(&cinfo);
snd_seq_client_info_set_client(cinfo, -1);
if (rc().manual_alsa_ports())
{
/*
* Output busses
*/
int num_buses = SEQ64_ALSA_OUTPUT_BUSS_MAX;
for (int i = 0; i < num_buses; ++i)
{
if (not_nullptr(m_buses_out[i]))
{
delete m_buses_out[i];
errprintf("mmbus::init() manual: m_buses_out[%d] not null\n", i);
}
m_buses_out[i] = new midibus
(
snd_seq_client_id(m_alsa_seq), m_alsa_seq, i+1, m_queue
);
m_buses_out[i]->init_out_sub();
m_buses_out_active[i] = m_buses_out_init[i] = true;
}
m_num_out_buses = num_buses;
if (not_nullptr(m_buses_in[0]))
{
delete m_buses_in[0];
errprint("mmbus::init() manual: m_buses_[0] not null");
}
/*
* Input buss. Only the first element is set up. The rest are used
* only for non-manual ALSA ports in the else-class below.
*/
m_num_in_buses = 1;
m_buses_in[0] = new midibus
(
snd_seq_client_id(m_alsa_seq), m_alsa_seq, m_num_in_buses, m_queue
);
m_buses_in[0]->init_in_sub();
m_buses_in_active[0] = m_buses_in_init[0] = true;
}
else
{
/*
* While the next client for the sequencer is available, get the client
* from cinfo. Fill pinfo.
*/
while (snd_seq_query_next_client(m_alsa_seq, cinfo) >= 0)
{
int client = snd_seq_client_info_get_client(cinfo);
snd_seq_port_info_alloca(&pinfo); /* will fill pinfo */
snd_seq_port_info_set_client(pinfo, client);
snd_seq_port_info_set_port(pinfo, -1);
while (snd_seq_query_next_port(m_alsa_seq, pinfo) >= 0)
{
/*
* While the next port is available, get its capability.
*/
int cap = snd_seq_port_info_get_capability(pinfo);
if
(
ALSA_CLIENT_CHECK(pinfo) &&
snd_seq_port_info_get_client(pinfo) != SND_SEQ_CLIENT_SYSTEM
)
{
/*
* Output busses:
*
* Why are we doing the ALSA client check again here?
* Because it could be altered in the if-clause above.
*/
if (CAP_WRITE(cap) && ALSA_CLIENT_CHECK(pinfo))
{
if (not_nullptr(m_buses_out[m_num_out_buses]))
{
delete m_buses_out[m_num_out_buses];
errprintf
(
"mmbus::init(): m_buses_out[%d] not null\n",
m_num_out_buses
);
}
m_buses_out[m_num_out_buses] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo), m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_out_buses, m_queue
);
if (m_buses_out[m_num_out_buses]->init_out())
{
m_buses_out_active[m_num_out_buses] = true;
m_buses_out_init[m_num_out_buses] = true;
}
else
m_buses_out_init[m_num_out_buses] = true;
++m_num_out_buses;
}
/*
* Input busses
*/
if (CAP_READ(cap) && ALSA_CLIENT_CHECK(pinfo)) /* inputs */
{
if (not_nullptr(m_buses_in[m_num_in_buses]))
{
delete m_buses_in[m_num_in_buses];
errprintf
(
"mmbus::init(): m_buses_in[%d] not null\n",
m_num_in_buses
);
}
m_buses_in[m_num_in_buses] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo), m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_in_buses, m_queue
);
m_buses_in_active[m_num_in_buses] =
m_buses_in_init[m_num_in_buses] = true;
++m_num_in_buses;
}
}
}
} /* end loop for clients */
}
set_beats_per_minute(m_beats_per_minute);
set_ppqn(ppqn);
/*
* Get the number of MIDI input poll file descriptors. Allocate the
* poll-descriptors array. Then get the input poll-descriptors into the
* array
*/
m_num_poll_descriptors = snd_seq_poll_descriptors_count(m_alsa_seq, POLLIN);
m_poll_descriptors = new pollfd[m_num_poll_descriptors];
snd_seq_poll_descriptors
(
m_alsa_seq, m_poll_descriptors, m_num_poll_descriptors, POLLIN
);
set_sequence_input(false, nullptr);
/* Set the input and output buffer sizes */
snd_seq_set_output_buffer_size(m_alsa_seq, c_midibus_output_size);
snd_seq_set_input_buffer_size(m_alsa_seq, c_midibus_input_size);
m_bus_announce = new midibus
(
snd_seq_client_id(m_alsa_seq),
SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_ANNOUNCE,
m_alsa_seq, "system", "announce", // was "annouce" ca 2016-04-03
0, m_queue
);
m_bus_announce->set_input(true);
for (int i = 0; i < m_num_out_buses; ++i)
set_clock(i, m_init_clock[i]);
for (int i = 0; i < m_num_in_buses; ++i)
set_input(i, m_init_input[i]);
#endif // SEQ64_HAVE_LIBASOUND
}
void
mastermidibus::port_start (int client, int port)
{
#ifdef SEQ64_HAVE_LIBASOUND
automutex locker(m_mutex);
snd_seq_client_info_t * cinfo; /* client info */
snd_seq_client_info_alloca(&cinfo);
snd_seq_get_any_client_info(m_alsa_seq, client, cinfo);
snd_seq_port_info_t * pinfo; /* port info */
snd_seq_port_info_alloca(&pinfo);
snd_seq_get_any_port_info(m_alsa_seq, client, port, pinfo);
int cap = snd_seq_port_info_get_capability(pinfo); /* get its capability */
if (ALSA_CLIENT_CHECK(pinfo))
{
if (CAP_FULL_WRITE(cap) && ALSA_CLIENT_CHECK(pinfo)) /* outputs */
{
bool replacement = false;
int bus_slot = m_num_out_buses;
for (int i = 0; i < m_num_out_buses; ++i)
{
if
(
m_buses_out[i]->get_client() == client &&
m_buses_out[i]->get_port() == port &&
! m_buses_out_active[i]
)
{
replacement = true;
bus_slot = i;
}
}
if (not_nullptr(m_buses_out[bus_slot]))
{
delete m_buses_out[bus_slot];
errprintf
(
"mastermidibus::port_start(): m_buses_out[%d] not null\n",
bus_slot
);
}
m_buses_out[bus_slot] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_out_buses,
m_queue
);
m_buses_out[bus_slot]->init_out();
m_buses_out_active[bus_slot] = true;
m_buses_out_init[bus_slot] = true;
if (! replacement)
++m_num_out_buses;
}
if (CAP_FULL_READ(cap) && ALSA_CLIENT_CHECK(pinfo)) /* inputs */
{
bool replacement = false;
int bus_slot = m_num_in_buses;
for (int i = 0; i < m_num_in_buses; ++i)
{
if
(
m_buses_in[i]->get_client() == client &&
m_buses_in[i]->get_port() == port && ! m_buses_in_active[i]
)
{
replacement = true;
bus_slot = i;
}
}
if (not_nullptr(m_buses_in[bus_slot]))
{
delete m_buses_in[bus_slot];
errprintf
(
"mmbus::port_start(): m_buses_in[%d] not null\n", bus_slot
);
}
m_buses_in[bus_slot] = new midibus
(
snd_seq_client_id(m_alsa_seq),
snd_seq_port_info_get_client(pinfo),
snd_seq_port_info_get_port(pinfo),
m_alsa_seq,
snd_seq_client_info_get_name(cinfo),
snd_seq_port_info_get_name(pinfo),
m_num_in_buses,
m_queue
);
m_buses_in_active[bus_slot] = true;
m_buses_in_init[bus_slot] = true;
if (! replacement)
m_num_in_buses++;
}
} /* end loop for clients */
/*
* Get the number of MIDI input poll file descriptors.
*/
m_num_poll_descriptors = snd_seq_poll_descriptors_count(m_alsa_seq, POLLIN);
m_poll_descriptors = new pollfd[m_num_poll_descriptors]; /* allocate info */
snd_seq_poll_descriptors /* get input descriptors */
(
m_alsa_seq, m_poll_descriptors, m_num_poll_descriptors, POLLIN
);
#endif // SEQ64_HAVE_LIBASOUND
}
void event_decoder(snd_seq_t *handle, int argc, char *argv[])
{
snd_seq_event_t *ev;
snd_seq_port_info_t *pinfo;
snd_seq_port_subscribe_t *sub;
snd_seq_addr_t addr;
int client, port, queue, max, err, v1, v2;
char *ptr;
struct pollfd *pfds;
if ((client = snd_seq_client_id(handle))<0) {
fprintf(stderr, "Cannot determine client number: %s\n", snd_strerror(client));
return;
}
printf("Client ID = %i\n", client);
if ((queue = snd_seq_alloc_queue(handle))<0) {
fprintf(stderr, "Cannot allocate queue: %s\n", snd_strerror(queue));
return;
}
printf("Queue ID = %i\n", queue);
if ((err = snd_seq_nonblock(handle, 1))<0)
fprintf(stderr, "Cannot set nonblock mode: %s\n", snd_strerror(err));
snd_seq_port_info_alloca(&pinfo);
snd_seq_port_info_set_name(pinfo, "Input");
snd_seq_port_info_set_type(pinfo, SND_SEQ_PORT_TYPE_MIDI_GENERIC);
snd_seq_port_info_set_capability(pinfo, SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_WRITE);
/* Enable timestamping for events sent by external subscribers. */
snd_seq_port_info_set_timestamping(pinfo, 1);
snd_seq_port_info_set_timestamp_real(pinfo, 1);
snd_seq_port_info_set_timestamp_queue(pinfo, queue);
if ((err = snd_seq_create_port(handle, pinfo)) < 0) {
fprintf(stderr, "Cannot create input port: %s\n", snd_strerror(err));
return;
}
port = snd_seq_port_info_get_port(pinfo);
event_decoder_start_timer(handle, queue, client, port);
snd_seq_port_subscribe_alloca(&sub);
addr.client = SND_SEQ_CLIENT_SYSTEM;
addr.port = SND_SEQ_PORT_SYSTEM_ANNOUNCE;
snd_seq_port_subscribe_set_sender(sub, &addr);
addr.client = client;
addr.port = port;
snd_seq_port_subscribe_set_dest(sub, &addr);
snd_seq_port_subscribe_set_queue(sub, queue);
snd_seq_port_subscribe_set_time_update(sub, 1);
snd_seq_port_subscribe_set_time_real(sub, 1);
if ((err = snd_seq_subscribe_port(handle, sub))<0) {
fprintf(stderr, "Cannot subscribe announce port: %s\n", snd_strerror(err));
return;
}
addr.client = SND_SEQ_CLIENT_SYSTEM;
addr.port = SND_SEQ_PORT_SYSTEM_TIMER;
snd_seq_port_subscribe_set_sender(sub, &addr);
if ((err = snd_seq_subscribe_port(handle, sub))<0) {
fprintf(stderr, "Cannot subscribe timer port: %s\n", snd_strerror(err));
return;
}
for (max = 0; max < argc; max++) {
ptr = argv[max];
if (!ptr)
continue;
snd_seq_port_subscribe_set_time_real(sub, 0);
if (tolower(*ptr) == 'r') {
snd_seq_port_subscribe_set_time_real(sub, 1);
ptr++;
}
if (sscanf(ptr, "%i.%i", &v1, &v2) != 2) {
fprintf(stderr, "Wrong argument '%s'...\n", argv[max]);
return;
}
addr.client = v1;
addr.port = v2;
snd_seq_port_subscribe_set_sender(sub, &addr);
if ((err = snd_seq_subscribe_port(handle, sub))<0) {
fprintf(stderr, "Cannot subscribe port %i from client %i: %s\n", v2, v1, snd_strerror(err));
return;
}
}
max = snd_seq_poll_descriptors_count(handle, POLLIN);
pfds = alloca(sizeof(*pfds) * max);
while (1) {
snd_seq_poll_descriptors(handle, pfds, max, POLLIN);
if (poll(pfds, max, -1) < 0)
break;
do {
if ((err = snd_seq_event_input(handle, &ev))<0)
break;
if (!ev)
continue;
decode_event(ev);
snd_seq_free_event(ev);
} while (err > 0);
}
}
void MidiAlsaSeq::run()
{
// watch the pipe and sequencer input events
int pollfd_count = snd_seq_poll_descriptors_count( m_seqHandle,
POLLIN );
struct pollfd * pollfd_set = new struct pollfd[pollfd_count + 1];
snd_seq_poll_descriptors( m_seqHandle, pollfd_set + 1, pollfd_count,
POLLIN );
pollfd_set[0].fd = m_pipe[0];
pollfd_set[0].events = POLLIN;
++pollfd_count;
while( m_quit == false )
{
int pollRet = poll( pollfd_set, pollfd_count, EventPollTimeOut );
if( pollRet == 0 )
{
continue;
}
else if( pollRet == -1 )
{
// gdb may interrupt the poll
if( errno == EINTR )
{
continue;
}
qCritical( "error while polling ALSA sequencer handle" );
break;
}
// shutdown?
if( m_quit )
{
break;
}
m_seqMutex.lock();
// while event queue is not empty
while( snd_seq_event_input_pending( m_seqHandle, true ) > 0 )
{
snd_seq_event_t * ev;
if( snd_seq_event_input( m_seqHandle, &ev ) < 0 )
{
m_seqMutex.unlock();
qCritical( "error while fetching MIDI event from sequencer" );
break;
}
m_seqMutex.unlock();
snd_seq_addr_t * source = NULL;
MidiPort * dest = NULL;
for( int i = 0; i < m_portIDs.size(); ++i )
{
if( m_portIDs.values()[i][0] == ev->dest.port )
{
dest = m_portIDs.keys()[i];
}
if( ( m_portIDs.values()[i][1] != -1 &&
m_portIDs.values()[i][1] == ev->source.port ) ||
m_portIDs.values()[i][0] == ev->source.port )
{
source = &ev->source;
}
}
if( dest == NULL )
{
continue;
}
switch( ev->type )
{
case SND_SEQ_EVENT_NOTEON:
dest->processInEvent( MidiEvent( MidiNoteOn,
ev->data.note.channel,
ev->data.note.note -
KeysPerOctave,
ev->data.note.velocity,
source
),
MidiTime( ev->time.tick ) );
break;
case SND_SEQ_EVENT_NOTEOFF:
dest->processInEvent( MidiEvent( MidiNoteOff,
ev->data.note.channel,
ev->data.note.note -
KeysPerOctave,
ev->data.note.velocity,
source
),
MidiTime( ev->time.tick) );
break;
case SND_SEQ_EVENT_KEYPRESS:
dest->processInEvent( MidiEvent(
MidiKeyPressure,
ev->data.note.channel,
ev->data.note.note -
KeysPerOctave,
ev->data.note.velocity,
source
), MidiTime() );
break;
case SND_SEQ_EVENT_CONTROLLER:
dest->processInEvent( MidiEvent(
MidiControlChange,
ev->data.control.channel,
ev->data.control.param,
ev->data.control.value, source ),
MidiTime() );
break;
case SND_SEQ_EVENT_PGMCHANGE:
dest->processInEvent( MidiEvent(
MidiProgramChange,
ev->data.control.channel,
ev->data.control.param,
ev->data.control.value, source ),
MidiTime() );
break;
case SND_SEQ_EVENT_CHANPRESS:
dest->processInEvent( MidiEvent(
MidiChannelPressure,
ev->data.control.channel,
ev->data.control.param,
ev->data.control.value, source ),
MidiTime() );
break;
case SND_SEQ_EVENT_PITCHBEND:
dest->processInEvent( MidiEvent( MidiPitchBend,
ev->data.control.channel,
ev->data.control.value + 8192, 0, source ),
MidiTime() );
break;
case SND_SEQ_EVENT_SENSING:
case SND_SEQ_EVENT_CLOCK:
break;
default:
fprintf( stderr,
"ALSA-sequencer: unhandled input "
"event %d\n", ev->type );
break;
} // end switch
m_seqMutex.lock();
} // end while
m_seqMutex.unlock();
}
delete[] pollfd_set;
}
