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+/* This file is part of Ingen.
+ * Copyright 2007-2011 David 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 INGEN_ENGINE_EVENTBUFFER_HPP
+#define INGEN_ENGINE_EVENTBUFFER_HPP
+
+#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
+#include "lv2/lv2plug.in/ns/ext/event/event.h"
+#include "lv2/lv2plug.in/ns/ext/event/event-helpers.h"
+#include "ingen/PortType.hpp"
+#include "Buffer.hpp"
+
+namespace Ingen {
+namespace Server {
+
+class EventBuffer : public Buffer {
+public:
+ EventBuffer(BufferFactory& bufs, size_t capacity);
+ ~EventBuffer();
+
+ void* port_data(PortType port_type, SampleCount offset=0) { return _data; }
+ const void* port_data(PortType port_type, SampleCount offset=0) const { return _data; }
+
+ inline void rewind() const { lv2_event_begin(&_iter, _data); }
+
+ inline void clear() {
+ _latest_frames = 0;
+ _latest_subframes = 0;
+ _data->event_count = 0;
+ _data->size = 0;
+ rewind();
+ }
+
+ void prepare_read(Context& context);
+ void prepare_write(Context& context);
+
+ void copy(Context& context, const Buffer* src);
+
+ inline size_t event_count() const { return _data->event_count; }
+ inline uint32_t capacity() const { return _data->capacity; }
+ inline uint32_t latest_frames() const { return _latest_frames; }
+ inline uint32_t latest_subframes() const { return _latest_subframes; }
+
+ bool increment() const;
+ bool is_valid() const;
+
+ bool get_event(uint32_t* frames,
+ uint32_t* subframes,
+ uint16_t* type,
+ uint16_t* size,
+ uint8_t** data) const;
+
+ LV2_Atom* get_atom() const;
+ LV2_Event* get_event() const;
+
+ bool append(uint32_t frames,
+ uint32_t subframes,
+ uint16_t type,
+ uint16_t size,
+ const uint8_t* data);
+
+private:
+ LV2_Event_Buffer* _data; ///< Contents
+ mutable LV2_Event_Iterator _iter; ///< Iterator into _data
+ uint32_t _latest_frames; ///< Latest time of all events (frames)
+ uint32_t _latest_subframes; ///< Latest time of all events (subframes)
+};
+
+} // namespace Server
+} // namespace Ingen
+
+#endif // INGEN_ENGINE_EVENTBUFFER_HPP