Use Raul::TimeStamp (LV2 compatible typed 32:32 fixed timestamp) everywhere.

Fix initial size of Patchage messages window.
Machina disabled for now (transitioning to generic timestamps).


git-svn-id: http://svn.drobilla.net/lad/raul@1133 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 83 insertions, 0 deletions

diff --git a/raul/EventRingBuffer.hpp b/raul/EventRingBuffer.hpp
new file mode 100644
index 0000000..9a28084
--- /dev/null
+++ b/raul/EventRingBuffer.hpp
@@ -0,0 +1,83 @@
+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Raul 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.
+ * 
+ * Raul 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 RAUL_EVENT_RING_BUFFER_HPP
+#define RAUL_EVENT_RING_BUFFER_HPP
+
+#include <cassert>
+#include <algorithm>
+#include <glib.h>
+#include <raul/RingBuffer.hpp>
+#include <raul/TimeStamp.hpp>
+
+namespace Raul {
+
+
+/** A RingBuffer of events (generic time-stamped binary "blobs").
+ *
+ * This packs a timestamp, size, and size bytes of data flat into the buffer.
+ * Useful for MIDI events, OSC messages, etc.
+ */
+class EventRingBuffer : private Raul::RingBuffer<uint8_t> {
+public:
+
+	/** @param capacity Ringbuffer capacity in bytes.
+	 */
+	EventRingBuffer(size_t capacity)
+		: RingBuffer<uint8_t>(capacity)
+	{}
+
+	size_t capacity() const { return _size; }
+
+	size_t write(TimeStamp time, size_t size, const uint8_t* buf);
+	bool   read(TimeStamp* time, size_t* size, uint8_t* buf);
+};
+
+
+inline bool
+EventRingBuffer::read(TimeStamp* time, size_t* size, uint8_t* buf)
+{
+	bool success = RingBuffer<uint8_t>::full_read(sizeof(TimeStamp), (uint8_t*)time);
+	if (success)
+		success = RingBuffer<uint8_t>::full_read(sizeof(size_t), (uint8_t*)size);
+	if (success)
+		success = RingBuffer<uint8_t>::full_read(*size, buf);
+
+	return success;
+}
+
+
+inline size_t
+EventRingBuffer::write(TimeStamp time, size_t size, const uint8_t* buf)
+{
+	assert(size > 0);
+
+	if (write_space() < (sizeof(TimeStamp) + sizeof(size_t) + size)) {
+		return 0;
+	} else {
+		RingBuffer<uint8_t>::write(sizeof(TimeStamp), (uint8_t*)&time);
+		RingBuffer<uint8_t>::write(sizeof(size_t), (uint8_t*)&size);
+		RingBuffer<uint8_t>::write(size, buf);
+		return size;
+	}
+}
+
+
+} // namespace Raul
+
+#endif // RAUL_EVENT_RING_BUFFER_HPP
+