1 files changed, 82 insertions, 0 deletions
diff --git a/libs/ardour/base_audio_port.cc b/libs/ardour/base_audio_port.cc
new file mode 100644
index 0000000000..ceec4c1d3a
--- /dev/null
+++ b/libs/ardour/base_audio_port.cc
@@ -0,0 +1,82 @@
+/*
+    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
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <cassert>
+#include <glib.h>
+#include <ardour/base_audio_port.h>
+#include <ardour/audioengine.h>
+#include <ardour/data_type.h>
+
+using namespace ARDOUR;
+using namespace std;
+
+nframes_t BaseAudioPort::_short_over_length = 2;
+nframes_t BaseAudioPort::_long_over_length = 10;
+
+BaseAudioPort::BaseAudioPort (const std::string& name, Flags flgs)
+	: Port (name, flgs)
+	, _buffer (0)
+	, _own_buffer (false)
+{
+	_type = DataType::AUDIO;
+	_mixdown = default_mixdown;
+}
+
+BaseAudioPort::~BaseAudioPort ()
+{
+	if (_own_buffer && _buffer) {
+		delete _buffer;
+	}
+}
+
+void
+BaseAudioPort::reset()
+{
+	Port::reset();
+
+	if (_own_buffer && _buffer) {
+		_buffer->resize (engine->frames_per_cycle());
+		_buffer->clear ();
+	}
+	
+	_metering = 0;
+	reset_meters ();
+}
+
+void
+BaseAudioPort::default_mixdown (const set<Port*>& ports, AudioBuffer* dest, nframes_t cnt, nframes_t offset, bool first_overwrite)
+{
+	set<Port*>::const_iterator p = ports.begin();
+
+	if (first_overwrite) {
+		dest->read_from ((dynamic_cast<BaseAudioPort*>(*p))->get_audio_buffer(), cnt, offset);
+		p++;
+	}
+
+	for (; p != ports.end(); ++p) {
+		dest->accumulate_from ((dynamic_cast<BaseAudioPort*>(*p))->get_audio_buffer(), cnt, offset);
+	}
+}
+
+void 
+BaseAudioPort::set_mixdown_function (void (*func)(const set<Port*>&, AudioBuffer*, nframes_t, nframes_t, bool))
+{
+	g_atomic_pointer_set(&_mixdown, func);
+}
+
+