along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
*/
#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>
gint AudioEngine::m_meter_exit;
+static void
+ardour_jack_error (const char* msg)
+{
+ error << "JACK: " << msg << endmsg;
+}
+
AudioEngine::AudioEngine (string client_name)
: ports (new Ports)
{
AudioEngine::~AudioEngine ()
{
- if (_running) {
- jack_client_close (_jack);
+ {
+ Glib::Mutex::Lock tm (_process_lock);
+ session_removed.signal ();
+
+ if (_running) {
+ jack_client_close (_jack);
+ }
+
+ stop_metering_thread ();
}
-
- stop_metering_thread ();
}
void
}
int
-AudioEngine::stop ()
+AudioEngine::stop (bool forever)
{
if (_running) {
_running = false;
- jack_deactivate (_jack);
+ if (forever) {
+ jack_client_t* foo = _jack;
+ _jack = 0;
+ jack_client_close (foo);
+ stop_metering_thread ();
+ } else {
+ jack_deactivate (_jack);
+ }
Stopped(); /* EMIT SIGNAL */
}
}
-
bool
AudioEngine::get_sync_offset (nframes_t& offset) const
{
AudioEngine::jack_timebase_callback (jack_transport_state_t state, nframes_t nframes,
jack_position_t* pos, int new_position)
{
- if (session && session->synced_to_jack()) {
+ if (_jack && session && session->synced_to_jack()) {
session->jack_timebase_callback (state, nframes, pos, new_position);
}
}
int
AudioEngine::jack_sync_callback (jack_transport_state_t state, jack_position_t* pos)
{
- if (session) {
+ if (_jack && session) {
return session->jack_sync_callback (state, pos);
- } else {
- return true;
}
+
+ return true;
}
int
AudioEngine::_xrun_callback (void *arg)
{
- static_cast<AudioEngine *>(arg)->Xrun (); /* EMIT SIGNAL */
+ AudioEngine* ae = static_cast<AudioEngine*> (arg);
+ if (ae->jack()) {
+ ae->Xrun (); /* EMIT SIGNAL */
+ }
return 0;
}
int
AudioEngine::_graph_order_callback (void *arg)
{
- static_cast<AudioEngine *>(arg)->GraphReordered (); /* EMIT SIGNAL */
+ AudioEngine* ae = static_cast<AudioEngine*> (arg);
+ if (ae->jack()) {
+ ae->GraphReordered (); /* EMIT SIGNAL */
+ }
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;
jack_set_freewheel (_jack, false);
}
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);
+ for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
+ (*i)->cycle_start (nframes);
+ }
- session->process (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();
+ for (Ports::iterator i = p->begin(); i != p->end(); ++i) {
+ (*i)->cycle_end ();
+ }
if (last_monitor_check + monitor_check_interval < next_processed_frames) {
{
if (m_meter_thread) {
g_atomic_int_set (&m_meter_exit, 1);
+ m_meter_thread->join ();
+ m_meter_thread = 0;
}
- m_meter_thread->join ();
- m_meter_thread = 0;
}
void
AudioEngine::start_metering_thread ()
{
if (m_meter_thread == 0) {
- m_meter_thread = Glib::Thread::create (sigc::mem_fun(this, &AudioEngine::meter_thread), true);
+ m_meter_thread = Glib::Thread::create (sigc::mem_fun(this, &AudioEngine::meter_thread),
+ 500000, true, true, Glib::THREAD_PRIORITY_NORMAL);
}
}
void
AudioEngine::meter_thread ()
{
- while (g_atomic_int_get(&m_meter_exit) != true) {
+ while (true) {
Glib::usleep (10000); /* 1/100th sec interval */
+ if (g_atomic_int_get(&m_meter_exit)) {
+ break;
+ }
IO::update_meters ();
}
}
void
AudioEngine::set_session (Session *s)
{
+ Glib::Mutex::Lock pl (_process_lock);
+
if (!session) {
+
session = s;
+
+ nframes_t blocksize = jack_get_buffer_size (_jack);
+
+ /* page in as much of the session process code as we
+ can before we really start running.
+ */
+
+ 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 (session) {
session_remove_pending = true;
session_removed.wait(_process_lock);
- }
+ }
} else {
-
session = 0;
-
}
remove_all_ports ();
-
}
Port *
return newport;
} else {
-
- _process_lock.unlock();
throw PortRegistrationFailure();
}
return newport;
} else {
-
- _process_lock.unlock();
throw PortRegistrationFailure ();
}
void
AudioEngine::halted (void *arg)
{
- AudioEngine
*ae = reinterpret_cast<AudioEngine *> (arg);
+ AudioEngine
* ae = static_cast<AudioEngine *> (arg);
ae->_running = false;
- ae->_jack = 0;
-
ae->_buffer_size = 0;
ae->_frame_rate = 0;
+ ae->_jack = 0;
ae->Halted(); /* EMIT SIGNAL */
}
if (status & JackNameNotUnique) {
jack_client_name = jack_get_client_name (_jack);
}
+
+ jack_set_error_function (ardour_jack_error);
return 0;
}
return 0;
}
- if (jack_client_close (_jack)) {
- error << _("cannot shutdown connection to JACK") << endmsg;
- }
+ jack_client_close (_jack);
_buffer_size = 0;
_frame_rate = 0;
if (session) {
+ session->reset_jack_connection (_jack);
nframes_t blocksize = jack_get_buffer_size (_jack);
session->set_block_size (blocksize);
session->set_frame_rate (jack_get_sample_rate (_jack));
AudioEngine::request_buffer_size (nframes_t nframes)
{
if (_jack) {
- int ret = jack_set_buffer_size (_jack, nframes);
- return ret;
+
+ if (nframes == jack_get_buffer_size (_jack)) {
+ return 0;
+ }
+
+ return jack_set_buffer_size (_jack, nframes);
+
} else {
return -1;
}
return str;
}
+bool
+AudioEngine::is_realtime () const
+{
+ if (_jack) {
+ return jack_is_realtime (_jack);
+ } else {
+ return false;
+ }
+}
projects / ardour.git / blobdiff