/*
- 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"
+#include "ardour/audioengine.h"
using namespace ARDOUR;
using namespace std;
-MidiPort::MidiPort(jack_port_t* p)
- : Port(p)
- , _buffer(4096) // FIXME FIXME FIXME Jack needs to tell us this
- , _nframes_this_cycle(0)
+#define port_engine AudioEngine::instance()->port_engine()
+
+MidiPort::MidiPort (const std::string& name, PortFlags flags)
+ : Port (name, DataType::MIDI, flags)
+ , _has_been_mixed_down (false)
+ , _resolve_required (false)
+ , _input_active (true)
+ , _always_parse (false)
+{
+ _buffer = new MidiBuffer (AudioEngine::instance()->raw_buffer_size (DataType::MIDI));
+}
+
+MidiPort::~MidiPort()
+{
+ delete _buffer;
+}
+
+void
+MidiPort::cycle_start (pframes_t nframes)
{
- DataType dt(_type);
- assert(dt == DataType::MIDI);
+ framepos_t now = AudioEngine::instance()->sample_time_at_cycle_start();
+
+ Port::cycle_start (nframes);
- reset();
+ _buffer->clear ();
+
+ if (sends_output ()) {
+ port_engine.midi_clear (port_engine.get_buffer (_port_handle, nframes));
+ }
+ if (_always_parse) {
+ MidiBuffer& mb (get_midi_buffer (nframes));
+ /* dump incoming MIDI to parser */
+
+ for (MidiBuffer::iterator b = mb.begin(); b != mb.end(); ++b) {
+ uint8_t* buf = (*b).buffer();
+
+ _self_parser.set_timestamp (now + (*b).time());
+
+ uint32_t limit = (*b).size();
+
+ for (size_t n = 0; n < limit; ++n) {
+ _self_parser.scanner (buf[n]);
+ }
+ }
+ }
}
+MidiBuffer &
+MidiPort::get_midi_buffer (pframes_t nframes)
+{
+ if (_has_been_mixed_down) {
+ return *_buffer;
+ }
-MidiPort::~MidiPort()
+ if (receives_input ()) {
+
+ if (_input_active) {
+
+ void* buffer = port_engine.get_buffer (_port_handle, nframes);
+ const pframes_t event_count = port_engine.get_midi_event_count (buffer);
+
+ /* suck all relevant MIDI events from the MIDI port buffer
+ into our MidiBuffer
+ */
+
+ for (pframes_t i = 0; i < event_count; ++i) {
+
+ pframes_t timestamp;
+ size_t size;
+ uint8_t* buf;
+
+ port_engine.midi_event_get (timestamp, size, &buf, buffer, i);
+
+ if (buf[0] == 0xfe) {
+ /* throw away active sensing */
+ continue;
+ }
+
+ /* check that the event is in the acceptable time range */
+
+ if ((timestamp >= (_global_port_buffer_offset + _port_buffer_offset)) &&
+ (timestamp < (_global_port_buffer_offset + _port_buffer_offset + nframes))) {
+ _buffer->push_back (timestamp, size, buf);
+ } else {
+ cerr << "Dropping incoming MIDI at time " << timestamp << "; offset="
+ << _global_port_buffer_offset << " limit="
+ << (_global_port_buffer_offset + _port_buffer_offset + nframes) << "\n";
+ }
+ }
+
+ } else {
+ _buffer->silence (nframes);
+ }
+
+ } 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_start (nframes_t nframes)
+MidiPort::cycle_split ()
{
- _buffer.clear();
- assert(_buffer.size() == 0);
+ _has_been_mixed_down = false;
+}
- _nframes_this_cycle = nframes;
+void
+MidiPort::resolve_notes (void* port_buffer, MidiBuffer::TimeType when)
+{
+ for (uint8_t channel = 0; channel <= 0xF; channel++) {
+
+ uint8_t ev[3] = { ((uint8_t) (MIDI_CMD_CONTROL | channel)), MIDI_CTL_SUSTAIN, 0 };
+
+ /* we need to send all notes off AND turn the
+ * sustain/damper pedal off to handle synths
+ * that prioritize sustain over AllNotesOff
+ */
+
+ if (port_engine.midi_event_put (port_buffer, when, ev, 3) != 0) {
+ cerr << "failed to deliver sustain-zero on channel " << (int)channel << " on port " << name() << endl;
+ }
- if (_flags & JackPortIsOutput) {
- _buffer.silence(nframes);
- assert(_buffer.size() == 0);
- return;
+ ev[1] = MIDI_CTL_ALL_NOTES_OFF;
+
+ if (port_engine.midi_event_put (port_buffer, 0, ev, 3) != 0) {
+ cerr << "failed to deliver ALL NOTES OFF on channel " << (int)channel << " on port " << name() << endl;
+ }
}
+}
- // We're an input - copy Jack events to internal buffer
-
- void* jack_buffer = jack_port_get_buffer(_port, nframes);
+void
+MidiPort::flush_buffers (pframes_t nframes)
+{
+ if (sends_output ()) {
- const nframes_t event_count
- = jack_midi_get_event_count(jack_buffer);
+ 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, 0);
+ _resolve_required = false;
+ }
+
+ if (_buffer->empty()) {
+ return;
+ }
- assert(event_count < _buffer.capacity());
+ if (!port_buffer) {
+ port_buffer = port_engine.get_buffer (_port_handle, nframes);
+ }
- jack_midi_event_t ev;
+ for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
- for (nframes_t i=0; i < event_count; ++i) {
+ const Evoral::MIDIEvent<MidiBuffer::TimeType> ev (*i, false);
- jack_midi_event_get(&ev, jack_buffer, i);
+ // event times are in frames, relative to cycle start
- _buffer.push_back(ev);
+ 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()
+ << " to early for " << _global_port_buffer_offset
+ << " + " << _port_buffer_offset << endl;
+ }
+ }
+
+ /* done.. the data has moved to the port buffer, mark it so
+ */
+
+ _buffer->clear ();
}
+}
+
+void
+MidiPort::require_resolve ()
+{
+ _resolve_required = true;
+}
- assert(_buffer.size() == event_count);
+void
+MidiPort::transport_stopped ()
+{
+ _resolve_required = true;
+}
- //if (_buffer.size() > 0)
- // cerr << "MIDIPort got " << event_count << " events." << endl;
+void
+MidiPort::realtime_locate ()
+{
+ _resolve_required = true;
}
void
-MidiPort::cycle_end()
+MidiPort::reset ()
{
- if (_flags & JackPortIsInput) {
- _nframes_this_cycle = 0;
- return;
- }
+ 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));
+}
- // We're an output - copy events from internal buffer to Jack buffer
-
- void* jack_buffer = jack_port_get_buffer(_port, _nframes_this_cycle);
-
- const nframes_t event_count = _buffer.size();
-
- //if (event_count > 0)
- // cerr << "MIDIPort writing " << event_count << " events." << endl;
-
- jack_midi_clear_buffer(jack_buffer);
- for (nframes_t i=0; i < event_count; ++i) {
- const MidiEvent& ev = _buffer[i];
- // event times should be frames, relative to cycle start
- assert(ev.time >= 0);
- assert(ev.time < _nframes_this_cycle);
- jack_midi_event_write(jack_buffer, (jack_nframes_t)ev.time, ev.buffer, ev.size);
- }
-
- _nframes_this_cycle = 0;
+void
+MidiPort::set_input_active (bool yn)
+{
+ _input_active = yn;
+}
+
+void
+MidiPort::set_always_parse (bool yn)
+{
+ _always_parse = yn;
}
projects / ardour.git / blobdiff