static PyObject* is_realtime(PyObject* self, PyObject* args)
{
pyjack_client_t * client = self_or_global_client(self);
if(client->pjc == NULL) {
PyErr_SetString(JackNotConnectedError, "Jack connection has not yet been established.");
return NULL;
}
int realtime = jack_is_realtime(client->pjc);
return Py_BuildValue("i", realtime);
}
static
void *midi_thread(void *arg)
{
midi_stream_t *str = arg;
alsa_rawmidi_t *midi = str->owner;
struct pollfd pfds[MAX_PFDS];
int npfds;
jack_time_t wait_nsec = 1000*1000*1000; // 1 sec
process_midi_t proc;
proc.midi = midi;
proc.mode = str->mode;
pfds[0].fd = str->wake_pipe[0];
pfds[0].events = POLLIN|POLLERR|POLLNVAL;
npfds = 1;
if (jack_is_realtime(midi->client))
set_threaded_log_function();
//debug_log("midi_thread(%s): enter", str->name);
while (midi->keep_walking) {
int poll_timeout;
int wait_nanosleep;
int r=1, w=1; // read,write pos in pfds
int rp=0, wp=0; // read, write pos in ports
// sleep
//if (wait_nsec != 1000*1000*1000) {
// debug_log("midi_thread(%s): ", str->name);
// assert (wait_nsec == 1000*1000*1000);
//}
poll_timeout = wait_nsec / (1000*1000);
wait_nanosleep = wait_nsec % (1000*1000);
if (wait_nanosleep > NANOSLEEP_RESOLUTION) {
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = wait_nanosleep;
clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL);
}
int res = poll((struct pollfd*)&pfds, npfds, poll_timeout);
//debug_log("midi_thread(%s): poll exit: %d", str->name, res);
if (!midi->keep_walking)
break;
if (res < 0) {
if (errno == EINTR)
continue;
error_log("midi_thread(%s) poll failed: %s", str->name, strerror(errno));
break;
}
// check wakeup pipe
if (pfds[0].revents & ~POLLIN)
break;
if (pfds[0].revents & POLLIN) {
char c;
read(pfds[0].fd, &c, 1);
}
// add new ports
while (jack_ringbuffer_read_space(str->midi.new_ports) >= sizeof(midi_port_t*) && str->midi.nports < MAX_PORTS) {
midi_port_t *port;
jack_ringbuffer_read(str->midi.new_ports, (char*)&port, sizeof(port));
str->midi.ports[str->midi.nports++] = port;
debug_log("midi_thread(%s): added port %s", str->name, port->name);
}
// if (res == 0)
// continue;
// process ports
proc.cur_time = 0; //jack_frame_time(midi->client);
proc.next_time = NFRAMES_INF;
for (rp = 0; rp < str->midi.nports; ++rp) {
midi_port_t *port = str->midi.ports[rp];
proc.cur_time = jack_frame_time(midi->client);
proc.port = port;
proc.rpfds = &pfds[r];
proc.wpfds = &pfds[w];
proc.max_pfds = MAX_PFDS - w;
r += port->npfds;
if (!(str->process_midi)(&proc)) {
port->state = PORT_REMOVED_FROM_MIDI; // this signals to jack thread
continue; // this effectively removes port from array
}
w += port->npfds;
if (rp != wp)
str->midi.ports[wp] = port;
++wp;
}
if (str->midi.nports != wp)
debug_log("midi_%s: nports %d -> %d", str->name, str->midi.nports, wp);
str->midi.nports = wp;
if (npfds != w)
debug_log("midi_%s: npfds %d -> %d", str->name, npfds, w);
npfds = w;
/*
* Input : ports do not set proc.next_time.
* Output: port sets proc.next_time ONLY if it does not have queued data.
* So, zero timeout will not cause busy-looping.
*/
if (proc.next_time < proc.cur_time) {
debug_log("%s: late: next_time = %d, cur_time = %d", str->name, (int)proc.next_time, (int)proc.cur_time);
wait_nsec = 0; // we are late
} else if (proc.next_time != NFRAMES_INF) {
jack_time_t wait_frames = proc.next_time - proc.cur_time;
jack_nframes_t rate = jack_get_sample_rate(midi->client);
wait_nsec = (wait_frames * (1000*1000*1000)) / rate;
debug_log("midi_%s: timeout = %d", str->name, (int)wait_frames);
} else
wait_nsec = 1000*1000*1000;
//debug_log("midi_thread(%s): wait_nsec = %lld", str->name, wait_nsec);
}
return NULL;
}
static
int alsa_rawmidi_start(alsa_midi_t *m)
{
alsa_rawmidi_t *midi = (alsa_rawmidi_t*)m;
int err;
char c = 'q';
if (midi->keep_walking == 1)
return -EALREADY;
midi->keep_walking = 1;
if ((err = jack_client_create_thread(midi->client, &midi->in.thread, MIDI_THREAD_PRIO, jack_is_realtime(midi->client), midi_thread, &midi->in))) {
midi->keep_walking = 0;
return err;
}
if ((err = jack_client_create_thread(midi->client, &midi->out.thread, MIDI_THREAD_PRIO, jack_is_realtime(midi->client), midi_thread, &midi->out))) {
midi->keep_walking = 0;
write(midi->in.wake_pipe[1], &c, 1);
pthread_join(midi->in.thread, NULL);
return err;
}
if ((err = jack_client_create_thread(midi->client, &midi->scan.thread, 0, 0, scan_thread, midi))) {
midi->keep_walking = 0;
write(midi->in.wake_pipe[1], &c, 1);
write(midi->out.wake_pipe[1], &c, 1);
pthread_join(midi->in.thread, NULL);
pthread_join(midi->out.thread, NULL);
return err;
}
return 0;
}
/*****************************************************************************
*
* JACK_INIT()
*
* Setup the jack client.
*
*****************************************************************************/
int
jack_init(void) {
const char *server_name = NULL;
static char client_name[32];
jack_options_t options = JackNoStartServer | JackUseExactName;
jack_status_t status = 0;
if (debug) {
fprintf (stderr, "Initializing JACK client from thread 0x%lx\n", pthread_self());
}
if (client != NULL) {
if (debug) {
fprintf (stderr, "Warning: closing stale JACK client...\n");
}
jack_client_close (client);
client = NULL;
}
/* open a client connection to the JACK server */
for( phasex_instance = 0; phasex_instance != 16; phasex_instance++)
{
if(!phasex_instance) {
snprintf (client_name, 32, "%s", phasex_title);
}
else {
snprintf (client_name, 32, "%s-%02d", phasex_title, phasex_instance);
}
printf("Using client name %s\n", client_name);
if (client = jack_client_open ((const char *)client_name, options, &status, server_name))
break;
}
/* deal with non-unique client name */
if (status & JackNameNotUnique) {
fprintf (stderr, "Unable to start JACK client '%s'!\n", client_name);
return 1;
}
/* deal with jack server problems */
if (status & (JackServerFailed | JackServerError)) {
if (debug) {
fprintf (stderr, "Unable to connect to JACK server. Status = 0x%2.0x\n", status);
}
return 1;
}
/* deal with missing client */
if (client == NULL) {
if (debug) {
fprintf (stderr, "Unable to open JACK client. Status = 0x%2.0x\n", status);
}
return 1;
}
/* callback for when jack shuts down (needs to be set as early as possible) */
jack_on_shutdown (client, jack_shutdown_handler, 0);
if (debug) {
fprintf (stderr, "Unique JACK client name '%s' assigned.\n", client_name);
}
/* notify if we started jack server */
if (status & JackServerStarted) {
fprintf (stderr, "JACK server started.\n");
}
/* report realtime scheduling in JACK */
if (debug) {
if (jack_is_realtime (client)) {
fprintf (stderr, "JACK is running with realtime scheduling.\n");
}
else {
fprintf (stderr, "JACK is running without realtime scheduling.\n");
}
}
/* get sample rate early and notify other threads */
sample_rate = jack_get_sample_rate (client);
if (debug) {
fprintf (stderr, "JACK sample rate: %d\n", sample_rate);
}
/* scale sample rate depending on mode */
switch (sample_rate_mode) {
case SAMPLE_RATE_UNDERSAMPLE:
sample_rate /= 2;
break;
case SAMPLE_RATE_OVERSAMPLE:
sample_rate *= 2;
break;
}
/* set samplerate related vars */
f_sample_rate = (sample_t)sample_rate;
nyquist_freq = (sample_t)(sample_rate / 2);
wave_period = (sample_t)(F_WAVEFORM_SIZE / (double)sample_rate);
if (debug) {
fprintf (stderr, "Internal sample rate: %d\n", sample_rate);
}
/* callback for setting our sample rate when jack tells us to */
jack_set_sample_rate_callback (client, jack_samplerate_handler, 0);
/* now that we have the sample rate, signal anyone else who needs to know */
pthread_mutex_lock (&sample_rate_mutex);
pthread_cond_broadcast (&sample_rate_cond);
pthread_mutex_unlock (&sample_rate_mutex);
/* get buffer size */
buffer_size = jack_get_buffer_size (client) * 2;
if (buffer_size > (PHASEX_MAX_BUFSIZE / 2)) {
fprintf (stderr, "JACK requested buffer size: %d. Max is: %d.\n",
buffer_size, (PHASEX_MAX_BUFSIZE / 2));
fprintf (stderr, "JACK buffer size exceeded. Closing client...\n");
jack_client_close (client);
client = NULL;
jack_running = 0;
return 1;
}
buffer_full = buffer_size;
if (debug) {
fprintf (stderr, "JACK output buffer size: %d.\n", buffer_size);
}
/* callback for setting our buffer size when jack tells us to */
jack_set_buffer_size_callback (client, jack_bufsize_handler, 0);
/* callback for dealing with xruns */
jack_set_xrun_callback (client, jack_xrun_handler, 0);
/* create ports */
input_port1 = jack_port_register (client, "in_1",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, 0);
input_port2 = jack_port_register (client, "in_2",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, 0);
output_port1 = jack_port_register (client, "out_1",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
output_port2 = jack_port_register (client, "out_2",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
if ( (output_port1 == NULL) || (output_port2 == NULL) ||
(input_port1 == NULL) || (input_port2 == NULL) )
{
fprintf (stderr, "JACK has no output ports available.\n");
jack_client_close (client);
client = NULL;
jack_running = 0;
return 0;
}
/* set callback for jack to grab audio data */
jack_set_process_callback (client, process_buffer, 0);
return 0;
}
static int _is_realtime(ClientData clientData, Tcl_Interp *interp, int argc, Tcl_Obj* const *objv) {
_t *dp = (_t *)clientData;
if (argc != 2) return fw_error_str(interp, "jack-client is-realtime");
Tcl_SetObjResult(interp, Tcl_NewIntObj(jack_is_realtime(dp->fw.client)));
return TCL_OK;
}
int luajack_is_realtime(luajack_t *client)
{
cud_t *cud = get_cud(client);
if(!cud) return 0;
return jack_is_realtime(cud->client);
}
