rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 102 insertions, 0 deletions

diff --git a/libs/ardour/ardour/midi_buffer.h b/libs/ardour/ardour/midi_buffer.h
new file mode 100644
index 0000000000..699f461b17
--- /dev/null
+++ b/libs/ardour/ardour/midi_buffer.h
@@ -0,0 +1,102 @@
+/*
+    Copyright (C) 2006 Paul Davis 
+    Author: Dave Robillard
+    
+    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.
+*/
+
+#ifndef __ardour_midi_buffer_h__
+#define __ardour_midi_buffer_h__
+
+#include <midi++/event.h>
+#include <ardour/buffer.h>
+
+namespace ARDOUR {
+
+
+/** Buffer containing 8-bit unsigned char (MIDI) data. */
+class MidiBuffer : public Buffer
+{
+public:
+	MidiBuffer(size_t capacity);
+	~MidiBuffer();
+
+	void silence(nframes_t dur, nframes_t offset=0);
+	
+	void read_from(const Buffer& src, nframes_t nframes, nframes_t offset);
+	
+	void copy(const MidiBuffer& copy);
+
+	bool     push_back(const MIDI::Event& event);
+	bool     push_back(const jack_midi_event_t& event);
+	uint8_t* reserve(double time, size_t size);
+
+	void resize(size_t);
+
+	bool merge(const MidiBuffer& a, const MidiBuffer& b);
+	
+	struct iterator {
+		iterator(MidiBuffer& b, size_t i) : buffer(b), index(i) {}
+
+		inline MIDI::Event& operator*() const { return buffer[index]; }
+		inline iterator& operator++() { ++index; return *this; } // prefix
+		inline bool operator!=(const iterator& other) const { return index != other.index; }
+		
+		MidiBuffer& buffer;
+		size_t      index;
+	};
+	
+	struct const_iterator {
+		const_iterator(const MidiBuffer& b, size_t i) : buffer(b), index(i) {}
+
+		inline const MIDI::Event& operator*() const { return buffer[index]; }
+		inline const_iterator& operator++() { ++index; return *this; } // prefix
+		inline bool operator!=(const const_iterator& other) const { return index != other.index; }
+		
+		const MidiBuffer& buffer;
+		size_t            index;
+	};
+
+	iterator begin() { return iterator(*this, 0); }
+	iterator end()   { return iterator(*this, _size); }
+
+	const_iterator begin() const { return const_iterator(*this, 0); }
+	const_iterator end()   const { return const_iterator(*this, _size); }
+
+private:
+
+	friend class iterator;
+	friend class const_iterator;
+	
+	const MIDI::Event& operator[](size_t i) const { assert(i < _size); return _events[i]; }
+	MIDI::Event& operator[](size_t i) { assert(i < _size); return _events[i]; }
+
+	// FIXME: Eliminate this
+	static const size_t MAX_EVENT_SIZE = 4; // bytes
+	
+	/* We use _size as "number of events", so the size of _data is
+	 * (_size * MAX_EVENT_SIZE)
+	 */
+
+	/* FIXME: this is utter crap.  rewrite as a flat/packed buffer like MidiRingBuffer */
+
+	MIDI::Event* _events; ///< Event structs that point to offsets in _data
+	uint8_t*     _data;   ///< MIDI, straight up.  No time stamps.
+};
+
+
+} // namespace ARDOUR
+
+#endif // __ardour_midi_buffer_h__