+
+void
+MidiPort::flush_buffers (pframes_t nframes)
+{
+ if (sends_output ()) {
+
+ void* port_buffer = 0;
+
+ if (_resolve_required) {
+ port_buffer = port_engine.get_buffer (_port_handle, nframes);
+ /* resolve all notes at the start of the buffer */
+ resolve_notes (port_buffer, _global_port_buffer_offset);
+ _resolve_required = false;
+ }
+
+ if (_buffer->empty()) {
+ return;
+ }
+
+ if (!port_buffer) {
+ port_buffer = port_engine.get_buffer (_port_handle, nframes);
+ }
+
+
+ for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
+
+ const Evoral::Event<MidiBuffer::TimeType> ev (*i, false);
+
+
+ if (sends_output() && _trace_on) {
+ uint8_t const * const buf = ev.buffer();
+ const samplepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
+
+ _self_parser.set_timestamp (now + ev.time());
+
+ uint32_t limit = ev.size();
+
+ for (size_t n = 0; n < limit; ++n) {
+ _self_parser.scanner (buf[n]);
+ }
+ }
+
+
+ // event times are in samples, relative to cycle start
+
+#ifndef NDEBUG
+ if (DEBUG_ENABLED (DEBUG::MidiIO)) {
+ const Session* s = AudioEngine::instance()->session();
+ const samplepos_t now = (s ? s->transport_sample() : 0);
+ DEBUG_STR_DECL(a);
+ DEBUG_STR_APPEND(a, string_compose ("MidiPort %8 %1 pop event @ %2 (global %4, within %5 gpbo %6 pbo %7 sz %3 ", _buffer, ev.time(), ev.size(),
+ now + ev.time(), nframes, _global_port_buffer_offset, _port_buffer_offset, name()));
+ for (size_t i=0; i < ev.size(); ++i) {
+ DEBUG_STR_APPEND(a,hex);
+ DEBUG_STR_APPEND(a,"0x");
+ DEBUG_STR_APPEND(a,(int)(ev.buffer()[i]));
+ DEBUG_STR_APPEND(a,' ');
+ }
+ DEBUG_STR_APPEND(a,'\n');
+ DEBUG_TRACE (DEBUG::MidiIO, DEBUG_STR(a).str());
+ }
+#endif
+
+ assert (ev.time() < (nframes + _global_port_buffer_offset + _port_buffer_offset));
+
+ if (ev.time() >= _global_port_buffer_offset + _port_buffer_offset) {
+ if (port_engine.midi_event_put (port_buffer, (pframes_t) ev.time(), ev.buffer(), ev.size()) != 0) {
+ cerr << "write failed, drop flushed note off on the floor, time "
+ << ev.time() << " > " << _global_port_buffer_offset + _port_buffer_offset << endl;
+ }
+ } else {
+ cerr << "drop flushed event on the floor, time " << ev.time()
+ << " too early for " << _global_port_buffer_offset
+ << " + " << _port_buffer_offset;
+ for (size_t xx = 0; xx < ev.size(); ++xx) {
+ cerr << ' ' << hex << (int) ev.buffer()[xx];
+ }
+ cerr << dec << endl;
+ }
+ }
+
+ /* done.. the data has moved to the port buffer, mark it so
+ */
+
+ _buffer->clear ();
+ }
+}
+
+void
+MidiPort::require_resolve ()
+{
+ _resolve_required = true;
+}
+
+void
+MidiPort::transport_stopped ()
+{
+ _resolve_required = true;
+}
+
+void
+MidiPort::realtime_locate ()
+{
+ _resolve_required = true;
+}
+
+void
+MidiPort::reset ()
+{
+ Port::reset ();
+ delete _buffer;
+ cerr << name() << " new MIDI buffer of size " << AudioEngine::instance()->raw_buffer_size (DataType::MIDI) << endl;
+ _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
+}
+
+void
+MidiPort::set_input_active (bool yn)
+{
+ _input_active = yn;
+}
+
+void
+MidiPort::set_always_parse (bool yn)
+{
+ _always_parse = yn;
+}
+
+void
+MidiPort::set_trace_on (bool yn)
+{
+ _trace_on = yn;
+}
+
+int
+MidiPort::add_shadow_port (string const & name, MidiFilter mf)
+{
+ if (!ARDOUR::Port::receives_input()) {
+ return -1;
+ }
+
+ if (_shadow_port) {
+ return -2;
+ }
+
+ shadow_midi_filter = mf;
+
+ if (!(_shadow_port = boost::dynamic_pointer_cast<MidiPort> (AudioEngine::instance()->register_output_port (DataType::MIDI, name, false, PortFlags (Shadow|IsTerminal))))) {
+ return -3;
+ }
+
+ /* forward on our port latency to the shadow port.
+
+ XXX: need to capture latency changes and forward them too.
+ */
+
+ LatencyRange latency = private_latency_range (false);
+ _shadow_port->set_private_latency_range (latency, false);
+
+ return 0;
+}