1 files changed, 88 insertions, 0 deletions
diff --git a/src/libs/engine/MidiBuffer.h b/src/libs/engine/MidiBuffer.h
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+++ b/src/libs/engine/MidiBuffer.h
@@ -0,0 +1,88 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef MIDIBUFFER_H
+#define MIDIBUFFER_H
+
+#include <lv2ext/lv2-miditype.h>
+#include <lv2ext/lv2-midifunctions.h>
+#include "Buffer.h"
+#include "DataType.h"
+
+namespace Ingen {
+
+
+class MidiBuffer : public Buffer {
+public:
+	MidiBuffer(size_t capacity)
+		: Buffer(DataType(DataType::MIDI), capacity)
+		, _state(&_local_state)
+		, _buf(lv2midi_new((uint32_t)capacity))
+		, _local_buf(NULL)
+		, _joined_buf(NULL)
+	{
+		clear();
+		reset_state(0);
+	}
+
+	~MidiBuffer() { lv2midi_free(_buf); }
+
+	void prepare(SampleCount nframes);
+
+	bool is_joined_to(Buffer* buf) const;
+	bool is_joined() const { return (_joined_buf == NULL); }
+	bool join(Buffer* buf);
+	void unjoin();
+
+	uint32_t this_nframes() const { return _this_nframes; }
+	
+	inline LV2_MIDI* data() const
+		{ return ((_joined_buf != NULL) ? _joined_buf->data() : _buf); }
+	
+	inline LV2_MIDIState* state() const
+		{ return ((_joined_buf != NULL) ? _joined_buf->state() : _state); }
+
+	inline void clear()
+		{ lv2midi_reset_buffer(_buf); }
+
+	inline void reset_state(uint32_t nframes)
+		{ lv2midi_reset_state(_state, _buf, nframes); _this_nframes = nframes; }
+
+	inline double increment()
+		{ return lv2midi_increment(_state); }
+ 
+	inline double get_event(double* timestamp, uint32_t* size, unsigned char** data)
+		{ return lv2midi_get_event(_state, timestamp, size, data); }
+
+	inline int put_event(double timestamp, uint32_t size, const unsigned char* data)
+		{ return lv2midi_put_event(_state, timestamp, size, data); }
+
+private:
+	LV2_MIDIState* _state;
+	LV2_MIDIState  _local_state;
+	LV2_MIDI*      _buf;
+	LV2_MIDI*      _local_buf;
+	
+	MidiBuffer* _joined_buf;  ///< Buffer to mirror, if joined
+
+	uint32_t _this_nframes;
+};
+
+
+} // namespace Ingen
+
+#endif // MIDIBUFFER_H