/*
- Copyright (C) 2006 Paul Davis
+ Copyright (C) 2006 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <cassert>
#include <iostream>
-#include <ardour/midi_port.h>
-#include <ardour/data_type.h>
+#include "ardour/midi_port.h"
+#include "ardour/data_type.h"
using namespace ARDOUR;
using namespace std;
-MidiPort::MidiPort (Flags flags, nframes_t bufsize)
- : Port (flags), _buffer (bufsize)
+MidiPort::MidiPort (const std::string& name, Flags flags)
+ : Port (name, DataType::MIDI, flags)
+ , _has_been_mixed_down (false)
+ , _resolve_in_process (false)
{
- _type = DataType::MIDI;
- reset();
+ _buffer = new MidiBuffer (raw_buffer_size(0));
+}
+
+MidiPort::~MidiPort()
+{
+ delete _buffer;
+}
+void
+MidiPort::cycle_start (pframes_t nframes)
+{
+ _buffer->clear ();
+ assert (_buffer->size () == 0);
+ if (sends_output ()) {
+ jack_midi_clear_buffer (jack_port_get_buffer (_jack_port, nframes));
+ }
}
-MidiPort::~MidiPort()
+MidiBuffer &
+MidiPort::get_midi_buffer (framecnt_t nframes)
+{
+ if (_has_been_mixed_down) {
+ return *_buffer;
+ }
+
+ if (receives_input ()) {
+
+ void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
+ const pframes_t event_count = jack_midi_get_event_count(jack_buffer);
+
+ assert (event_count < _buffer->capacity());
+
+ /* suck all relevant MIDI events from the JACK MIDI port buffer
+ into our MidiBuffer
+ */
+
+ for (pframes_t i = 0; i < event_count; ++i) {
+
+ jack_midi_event_t ev;
+
+ jack_midi_event_get (&ev, jack_buffer, i);
+
+ if (ev.buffer[0] == 0xfe) {
+ /* throw away active sensing */
+ continue;
+ }
+
+ if (ev.time >= _port_offset && ev.time < (_port_offset + nframes)) {
+ _buffer->push_back (ev);
+ } else {
+ cerr << "Dropping incoming MIDI at time " << ev.time << "; offset=" << _port_offset << " limit=" << (_port_offset + nframes) << "\n";
+ }
+ }
+
+ if (nframes) {
+ _has_been_mixed_down = true;
+ }
+
+ } else {
+ _buffer->silence (nframes);
+ }
+
+ if (nframes) {
+ _has_been_mixed_down = true;
+ }
+
+ return *_buffer;
+}
+
+
+void
+MidiPort::cycle_end (pframes_t /*nframes*/)
+{
+ _has_been_mixed_down = false;
+}
+
+void
+MidiPort::cycle_split ()
+{
+ _has_been_mixed_down = false;
+}
+
+void
+MidiPort::flush_buffers (pframes_t nframes, framepos_t time)
+{
+ if (sends_output ()) {
+
+ void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
+
+ // Feed the data through the MidiStateTracker
+ bool did_loop;
+
+ _midi_state_tracker.track (_buffer->begin(), _buffer->end(), did_loop);
+
+ if (did_loop || _resolve_in_process) {
+ /* add necessary note offs */
+ _midi_state_tracker.resolve_notes (*_buffer, time);
+ }
+
+ _resolve_in_process = false;
+
+ for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
+ const Evoral::Event<framepos_t>& ev = *i;
+
+ // event times are in frames, relative to cycle start
+
+ assert (ev.time() < (nframes + _port_offset));
+
+ if (ev.time() >= _port_offset) {
+ if (jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size()) != 0) {
+ cerr << "write failed, drop flushed note off on the floor, time " << ev.time() << " > " << _port_offset << endl;
+ }
+ } else {
+ cerr << "drop flushed event on the floor, time " << ev.time() << " < " << _port_offset << endl;
+ }
+ }
+ }
+}
+
+void
+MidiPort::transport_stopped ()
+{
+ _resolve_in_process = true;
+}
+
+size_t
+MidiPort::raw_buffer_size (pframes_t nframes) const
{
+ return jack_midi_max_event_size (jack_port_get_buffer (_jack_port, nframes));
}