*/
#include <cassert>
+#include <iostream>
+
#include <ardour/midi_port.h>
#include <ardour/data_type.h>
-#include <iostream>
using namespace ARDOUR;
using namespace std;
-MidiPort::MidiPort(jack_port_t* p)
- : Port(p)
- , _buffer(NULL)
- , _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(4096); // FIXME FIXME FIXME
+ // FIXME: size kludge (see BufferSet::ensure_buffers)
+ // Jack needs to tell us this
+ _buffer = new MidiBuffer (1024 * 32);
}
-
MidiPort::~MidiPort()
{
delete _buffer;
}
+
void
-MidiPort::cycle_start (jack_nframes_t nframes)
+MidiPort::cycle_start (nframes_t nframes, nframes_t offset)
{
- _nframes_this_cycle = nframes;
+ _buffer->clear ();
+ assert (_buffer->size () == 0);
+
+ if (sends_output ()) {
+ jack_midi_clear_buffer (jack_port_get_buffer (_jack_port, nframes));
+ }
+}
- if (_flags & JackPortIsOutput) {
- _buffer->set_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
+ if (receives_input ()) {
+
+ 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());
+
+ jack_midi_event_t ev;
+
+ for (nframes_t i = 0; i < event_count; ++i) {
+
+ jack_midi_event_get (&ev, jack_buffer, i);
+
+ // i guess this should do but i leave it off to test the rest first.
+ //if (ev.time > offset && ev.time < offset+nframes)
+ _buffer->push_back (ev);
+ }
+
+ if (nframes) {
+ _has_been_mixed_down = true;
+ }
+
+ } else {
+ _buffer->silence (nframes, offset);
+ }
- void* jack_buffer = jack_port_get_buffer(_port, nframes);
-
- const jack_nframes_t event_count
- = jack_midi_port_get_info(jack_buffer, nframes)->event_count;
-
- assert(event_count < _buffer->capacity());
-
- for (jack_nframes_t i=0; i < event_count; ++i) {
- jack_midi_event_t* const ev = &_buffer->data()[i];
- jack_midi_event_get(ev, jack_buffer, i, nframes);
-
- // 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;
+ if (nframes) {
+ _has_been_mixed_down = true;
}
- _buffer->set_size(event_count);
-
- if (_buffer->size() > 0)
- cerr << "MIDIPort got " << event_count << " events." << endl;
+ return *_buffer;
}
+
void
-MidiPort::cycle_end()
+MidiPort::cycle_end (nframes_t nframes, nframes_t offset)
{
- if (_flags & JackPortIsInput) {
- _nframes_this_cycle = 0; // catch any oopses
- return;
+#if 0
+
+ if (sends_output ()) {
+ /* FIXME: offset */
+
+ // We're an output - copy events from source buffer to Jack buffer
+
+ void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
+
+ jack_midi_clear_buffer (jack_buffer);
+
+ for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
+ const Evoral::Event& ev = *i;
+
+ // event times should be frames, relative to cycle start
+ assert(ev.time() >= 0);
+ assert(ev.time() < nframes);
+ jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size());
+ }
}
+#endif
- // We're an output - copy events from internal buffer to Jack buffer
-
- void* jack_buffer = jack_port_get_buffer(_port, _nframes_this_cycle);
-
- const jack_nframes_t event_count = _buffer->size();
+ _has_been_mixed_down = false;
+}
- jack_midi_clear_buffer(jack_buffer, _nframes_this_cycle);
- for (jack_nframes_t i=0; i < event_count; ++i) {
- const jack_midi_event_t& ev = _buffer->data()[i];
- jack_midi_event_write(jack_buffer, ev.time, ev.buffer, ev.size, _nframes_this_cycle);
- }
+void
+MidiPort::flush_buffers (nframes_t nframes, nframes_t offset)
+{
+ /* FIXME: offset */
- _nframes_this_cycle = 0; // catch oopses
+ if (sends_output ()) {
+
+ void* jack_buffer = jack_port_get_buffer (_jack_port, nframes);
+
+ for (MidiBuffer::iterator i = _buffer->begin(); i != _buffer->end(); ++i) {
+ const Evoral::Event<nframes_t>& ev = *i;
+ // event times should be frames, relative to cycle start
+ assert(ev.time() >= 0);
+ assert(ev.time() < (nframes+offset));
+ if (ev.time() >= offset) {
+ jack_midi_event_write (jack_buffer, (jack_nframes_t) ev.time(), ev.buffer(), ev.size());
+ }
+ }
+ }
}
+
projects / ardour.git / blobdiff