Strip trailing whitespace and fix other whitespace errors (e.g. space/tab mixing...

[ardour.git] / libs / ardour / midi_port.cc

diff --git a/libs/ardour/midi_port.cc b/libs/ardour/midi_port.cc
index bd7252879465c456066ce0454dae727704ba28b7..880c1b5474b1e3e0b9d7284e681c628f971ec3e2 100644 (file)
--- a/libs/ardour/midi_port.cc
+++ b/libs/ardour/midi_port.cc
@@ -1,5 +1,5 @@
 /*
-    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
@@ -19,22 +19,120 @@
 #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)
 {
-       _type = DataType::MIDI;
-       reset();
+       _buffer = new MidiBuffer (raw_buffer_size(0));
+}
+
+MidiPort::~MidiPort()
+{
+       delete _buffer;
+}
 
+void
+MidiPort::cycle_start (nframes_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 (nframes_t nframes, nframes_t offset)
+{
+       if (_has_been_mixed_down) {
+               return *_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());
+
+               /* suck all relevant MIDI events from the JACK MIDI port buffer
+                  into our MidiBuffer
+               */
+
+               nframes_t off = offset + _port_offset;
+
+               for (nframes_t i = 0; i < event_count; ++i) {
+
+                       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);
+       }
+
+       if (nframes) {
+               _has_been_mixed_down = true;
+       }
+
+       return *_buffer;
+}
+
+
+void
+MidiPort::cycle_end (nframes_t /*nframes*/)
+{
+       _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 ()) {
+
+               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 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());
+                       }
+               }
+       }
+}
+
+size_t
+MidiPort::raw_buffer_size (nframes_t nframes) const
 {
+       return jack_midi_max_event_size(jack_port_get_buffer(_jack_port, nframes));
 }