/*
- 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 <ardour/midi_port.h>
-#include <ardour/data_type.h>
#include <iostream>
+#include "ardour/midi_port.h"
+#include "ardour/data_type.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)
+MidiPort::MidiPort (const std::string& name, Flags flags)
+ : Port (name, DataType::MIDI, flags)
+ , _has_been_mixed_down (false)
{
- DataType dt(_type);
- assert(dt == DataType::MIDI);
-
- reset();
-
-
+ _buffer = new MidiBuffer (raw_buffer_size(0));
}
-
MidiPort::~MidiPort()
{
+ delete _buffer;
}
void
-MidiPort::cycle_start (jack_nframes_t nframes)
+MidiPort::cycle_start (nframes_t nframes)
{
- _buffer.clear();
- assert(_buffer.size() == 0);
+ _buffer->clear ();
+ assert (_buffer->size () == 0);
- _nframes_this_cycle = nframes;
+ if (sends_output ()) {
+ jack_midi_clear_buffer (jack_port_get_buffer (_jack_port, nframes));
+ }
+}
- if (_flags & JackPortIsOutput) {
- _buffer.silence(nframes);
- assert(_buffer.size() == 0);
- return;
+MidiBuffer &
+MidiPort::get_midi_buffer (nframes_t nframes, nframes_t offset)
+{
+ if (_has_been_mixed_down) {
+ return *_buffer;
}
- // We're an input - copy Jack events to internal buffer
-
- void* jack_buffer = jack_port_get_buffer(_port, nframes);
+ if (receives_input ()) {
- const jack_nframes_t event_count
- = jack_midi_get_event_count(jack_buffer);
+ void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
+ const nframes_t event_count = jack_midi_get_event_count(jack_buffer);
- assert(event_count < _buffer.capacity());
+ assert (event_count < _buffer->capacity());
- MidiEvent ev;
+ /* suck all relevant MIDI events from the JACK MIDI port buffer
+ into our MidiBuffer
+ */
- // FIXME: too slow, event struct is copied twice (here and MidiBuffer::push_back)
- for (jack_nframes_t i=0; i < event_count; ++i) {
+ nframes_t off = offset + _port_offset;
- // This will fail to compile if we change MidiEvent to our own class
- jack_midi_event_get(static_cast<jack_midi_event_t*>(&ev), jack_buffer, i);
+ for (nframes_t i = 0; i < event_count; ++i) {
- _buffer.push_back(ev);
- // Convert note ons with velocity 0 to proper note offs
- // FIXME: Jack MIDI should guarantee this - does it?
- //if (ev->buffer[0] == MIDI_CMD_NOTE_ON && ev->buffer[2] == 0)
- // ev->buffer[0] = MIDI_CMD_NOTE_OFF;
+ jack_midi_event_t ev;
+
+ jack_midi_event_get (&ev, jack_buffer, i);
+
+ if (ev.time > off && ev.time < off+nframes) {
+ _buffer->push_back (ev);
+ }
+ }
+
+ if (nframes) {
+ _has_been_mixed_down = true;
+ }
+
+ } else {
+ _buffer->silence (nframes);
}
- assert(_buffer.size() == event_count);
+ if (nframes) {
+ _has_been_mixed_down = true;
+ }
- //if (_buffer.size() > 0)
- // cerr << "MIDIPort got " << event_count << " events." << endl;
+ return *_buffer;
}
+
void
-MidiPort::cycle_end()
+MidiPort::cycle_end (nframes_t /*nframes*/)
{
- if (_flags & JackPortIsInput) {
- _nframes_this_cycle = 0;
- return;
- }
+ _has_been_mixed_down = false;
+}
+
+void
+MidiPort::cycle_split ()
+{
+ _has_been_mixed_down = false;
+}
+
+void
+MidiPort::flush_buffers (nframes_t nframes, nframes_t offset)
+{
+ if (sends_output ()) {
- // We're an output - copy events from internal buffer to Jack buffer
-
- void* jack_buffer = jack_port_get_buffer(_port, _nframes_this_cycle);
+ void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
- const jack_nframes_t event_count = _buffer.size();
-
- //if (event_count > 0)
- // cerr << "MIDIPort writing " << event_count << " events." << endl;
+ for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
+ const Evoral::Event<nframes_t>& ev = *i;
- jack_midi_clear_buffer(jack_buffer);
- for (jack_nframes_t i=0; i < event_count; ++i) {
- const jack_midi_event_t& ev = _buffer[i];
- assert(ev.time < _nframes_this_cycle);
- jack_midi_event_write(jack_buffer, ev.time, ev.buffer, ev.size);
+ // event times are in frames, relative to cycle start
+
+ // XXX split cycle start or cycle start?
+
+ assert(ev.time() < (nframes+offset+_port_offset));
+
+ if (ev.time() >= offset + _port_offset) {
+ jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size());
+ }
+ }
}
-
- _nframes_this_cycle = 0;
}
+
+size_t
+MidiPort::raw_buffer_size (nframes_t nframes) const
+{
+ return jack_midi_max_event_size(jack_port_get_buffer(_jack_port, nframes));
+}
+
projects / ardour.git / blobdiff