#include <unistd.h>
#include <cerrno>
#include <vector>
+#include <exception>
+#include <stdexcept>
#include <glibmm/timer.h>
#include <pbd/pthread_utils.h>
#include <pbd/stacktrace.h>
+#include <pbd/unknown_type.h>
#include <ardour/audioengine.h>
#include <ardour/buffer.h>
#include <ardour/port.h>
+#include <ardour/audio_port.h>
+#include <ardour/midi_port.h>
#include <ardour/session.h>
#include <ardour/cycle_timer.h>
#include <ardour/utils.h>
return 0;
}
+/** Wrapped which is called by JACK as its process callback. It is just
+ * here to get us back into C++ land by calling AudioEngine::process_callback()
+ * @param nframes Number of frames passed by JACK.
+ * @param arg User argument passed by JACK, which will be the AudioEngine*.
+ */
int
AudioEngine::_process_callback (nframes_t nframes, void *arg)
{
static_cast<AudioEngine*>(arg)->_freewheeling = onoff;
}
+/** Method called by JACK (via _process_callback) which says that there
+ * is work to be done.
+ * @param nframes Number of frames to process.
+ */
int
AudioEngine::process_callback (nframes_t nframes)
{
// CycleTimer ct ("AudioEngine::process");
Glib::Mutex::Lock tm (_process_lock, Glib::TRY_LOCK);
+
+ /// The number of frames that will have been processed when we've finished
nframes_t next_processed_frames;
/* handle wrap around of total frames counter */
} else {
next_processed_frames = _processed_frames + nframes;
}
-
+
if (!tm.locked() || session == 0) {
+ /* return having done nothing */
_processed_frames = next_processed_frames;
return 0;
}
if (session_remove_pending) {
+ /* perform the actual session removal */
session = 0;
session_remove_pending = false;
session_removed.signal();
}
if (_freewheeling) {
+ /* emit the Freewheel signal and stop freewheeling in the event of trouble */
if (Freewheel (nframes)) {
cerr << "Freewheeling returned non-zero!\n";
_freewheeling = false;
return 0;
}
- session->process (nframes);
+ boost::shared_ptr<Ports> p = ports.reader();
+
+ // Prepare ports (ie read data if necessary)
+ for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
+ (*i)->cycle_start (nframes);
+ }
+
+ if (session) {
+ session->process (nframes);
+ }
if (!_running) {
- /* we were zombified, maybe because a ladspa plugin took
- too long, or jackd exited, or something like that.
- */
-
_processed_frames = next_processed_frames;
return 0;
}
+
+ // Finalize ports (ie write data if necessary)
+ for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
+ (*i)->cycle_end ();
+ }
if (last_monitor_check + monitor_check_interval < next_processed_frames) {
can before we really start running.
*/
- session->process (blocksize);
- session->process (blocksize);
- session->process (blocksize);
- session->process (blocksize);
- session->process (blocksize);
- session->process (blocksize);
- session->process (blocksize);
- session->process (blocksize);
+ boost::shared_ptr<Ports> p = ports.reader();
+
+ for (Ports::iterator i = p->begin(); i != p->end(); ++i)
+ (*i)->cycle_start (blocksize);
+
+ s->process (blocksize);
+ s->process (blocksize);
+ s->process (blocksize);
+ s->process (blocksize);
+ s->process (blocksize);
+ s->process (blocksize);
+ s->process (blocksize);
+ s->process (blocksize);
+
+ for (Ports::iterator i = p->begin(); i != p->end(); ++i)
+ (*i)->cycle_end ();
+
}
}
if (p) {
- Port *newport;
-
- if ((newport = new Port (p)) != 0) {
+ Port* newport = 0;
+
+ if (type == DataType::AUDIO)
+ newport = new AudioPort (p);
+ else if (type == DataType::MIDI)
+ newport = new MidiPort (p);
+ else
+ throw unknown_type();
+
+ if (newport != 0) {
RCUWriter<Ports> writer (ports);
boost::shared_ptr<Ports> ps = writer.get_copy ();
ps->insert (ps->begin(), newport);
}
}
- jack_port_t *p;
-
+ jack_port_t* p = 0;
+
if ((p = jack_port_register (_jack, portname.c_str(),
- type.to_jack_type(), JackPortIsOutput, 0)) != 0) {
-
- Port *newport = 0;
-
- {
+ type.to_jack_type(), JackPortIsOutput, 0)) != 0) {
+
+ Port* newport = 0;
+
+ if (type == DataType::AUDIO)
+ newport = new AudioPort (p);
+ else if (type == DataType::MIDI)
+ newport = new MidiPort (p);
+ else
+ throw unknown_type ();
+
+ if (newport != 0) {
RCUWriter<Ports> writer (ports);
boost::shared_ptr<Ports> ps = writer.get_copy ();
-
- newport = new Port (p);
ps->insert (ps->begin(), newport);
-
/* writer goes out of scope, forces update */
}
-
+
return newport;
-
+
} else {
throw PortRegistrationFailure ();
}
int
-AudioEngine::unregister_port (Port *port)
+AudioEngine::unregister_port (Port& port)
{
if (!_running) {
/* probably happening when the engine has been halted by JACK,
in which case, there is nothing we can do here.
- */
+ */
return 0;
}
- if (port) {
+ int ret = jack_port_unregister (_jack, port._port);
- int ret = jack_port_unregister (_jack, port->_port);
-
- if (ret == 0) {
-
- {
-
- RCUWriter<Ports> writer (ports);
- boost::shared_ptr<Ports> ps = writer.get_copy ();
-
- for (Ports::iterator i = ps->begin(); i != ps->end(); ++i) {
- if ((*i) == port) {
- ps->erase (i);
- break;
- }
- }
+ if (ret == 0) {
+
+ {
- /* writer goes out of scope, forces update */
+ RCUWriter<Ports> writer (ports);
+ boost::shared_ptr<Ports> ps = writer.get_copy ();
+
+ for (Ports::iterator i = ps->begin(); i != ps->end(); ++i) {
+ if ((*i) == &port) {
+ ps->erase (i);
+ break;
+ }
}
- remove_connections_for (port);
+ /* writer goes out of scope, forces update */
}
- return ret;
-
- } else {
- return -1;
+ remove_connections_for (port);
}
+
+ return ret;
}
int
}
int
-AudioEngine::disconnect (Port *port)
+AudioEngine::disconnect (Port& port)
{
if (!_running) {
if (!_has_run) {
}
}
- int ret = jack_port_disconnect (_jack, port->_port);
+ int ret = jack_port_disconnect (_jack, port._port);
if (ret == 0) {
remove_connections_for (port);
}
-nframes_t
+ARDOUR::nframes_t
AudioEngine::frame_rate ()
{
if (_jack) {
}
}
-nframes_t
+ARDOUR::nframes_t
AudioEngine::frames_per_cycle ()
{
if (_jack) {
}
}
+/** Get a port by name.
+ * Note this can return NULL, it will NOT create a port if it is not found (any more).
+ */
Port *
AudioEngine::get_port_by_name (const string& portname, bool keep)
{
}
}
- /* check to see if we have a Port for this name already */
-
boost::shared_ptr<Ports> pr = ports.reader();
for (Ports::iterator i = pr->begin(); i != pr->end(); ++i) {
}
}
- jack_port_t *p;
-
- if ((p = jack_port_by_name (_jack, portname.c_str())) != 0) {
- Port *newport = new Port (p);
-
- {
- if (keep && newport->is_mine (_jack)) {
- RCUWriter<Ports> writer (ports);
- boost::shared_ptr<Ports> ps = writer.get_copy ();
- ps->insert (newport);
- /* writer goes out of scope, forces update */
- }
- }
-
- return newport;
-
- } else {
-
- return 0;
- }
+ return 0;
}
const char **
}
string
-AudioEngine::get_nth_physical (uint32_t n, int flag)
+AudioEngine::get_nth_physical (DataType type, uint32_t n, int flag)
{
const char ** ports;
uint32_t i;
string ret;
+ assert(type != DataType::NIL);
+
if (!_running || !_jack) {
if (!_has_run) {
fatal << _("get_nth_physical called before engine was started") << endmsg;
}
}
- ports = jack_get_ports (_jack, NULL, NULL, JackPortIsPhysical|flag);
+ ports = jack_get_ports (_jack, NULL, type.to_jack_type(), JackPortIsPhysical|flag);
if (ports == 0) {
return "";
return ret;
}
-nframes_t
+ARDOUR::nframes_t
AudioEngine::get_port_total_latency (const Port& port)
{
if (!_jack) {
}
void
-AudioEngine::remove_connections_for (Port* port)
+AudioEngine::remove_connections_for (Port& port)
{
for (PortConnections::iterator i = port_connections.begin(); i != port_connections.end(); ) {
PortConnections::iterator tmp;
tmp = i;
++tmp;
- if ((*i).first == port->name()) {
+ if ((*i).first == port.name()) {
port_connections.erase (i);
}
short_name = long_name.substr (long_name.find_last_of (':') + 1);
- if (((*i)->_port = jack_port_register (_jack, short_name.c_str(), (*i)->type(), (*i)->flags(), 0)) == 0) {
+ if (((*i)->_port = jack_port_register (_jack, short_name.c_str(), (*i)->type().to_jack_type(), (*i)->flags(), 0)) == 0) {
error << string_compose (_("could not reregister %1"), (*i)->name()) << endmsg;
break;
} else {
(*i)->reset ();
if ((*i)->flags() & JackPortIsOutput) {
- (*i)->silence (jack_get_buffer_size (_jack), 0);
+ (*i)->get_buffer().silence (jack_get_buffer_size (_jack), 0);
}
}
projects / ardour.git / blobdiff