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authorDavid Robillard <d@drobilla.net>2008-09-30 16:50:21 +0000
committerDavid Robillard <d@drobilla.net>2008-09-30 16:50:21 +0000
commit93850c202de8b073a1ce1dd8bd246d407bce4e2f (patch)
tree6910b135bf4eff12de1af116cef73f6e9c107cd0 /src/engine/ProcessContext.hpp
parenta8bf5272d096de73507d2eab47f282c345f4ca8a (diff)
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Flatten ingen source directory heirarchy a bit.
git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@1551 a436a847-0d15-0410-975c-d299462d15a1
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+/* 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 PROCESSCONTEXT_H
+#define PROCESSCONTEXT_H
+
+#include "EventSink.hpp"
+#include "Context.hpp"
+
+namespace Ingen {
+
+
+/** Context of a process() call.
+ *
+ * This is used to pass whatever information a GraphObject might need to
+ * process in the audio thread, e.g. the available thread pool, sink for
+ * events (generated in the audio thread, not user initiated events), etc.
+ *
+ * Note the distinction between nframes and start/end. If transport speed
+ * != 1.0, end-start != nframes (though currently that is never the case, it
+ * may be in the future with sequencerey things).
+ *
+ * \ingroup engine
+ */
+class ProcessContext : public Context
+{
+public:
+ ProcessContext(Engine& engine)
+ : Context(engine, AUDIO)
+ , _event_sink(engine, 1024) // FIXME: size?
+ {}
+
+ void set_time_slice(SampleCount nframes, FrameTime start, FrameTime end) {
+ _nframes = nframes;
+ _start = start;
+ _end = end;
+ }
+
+ inline SampleCount nframes() const { return _nframes; }
+ inline FrameTime start() const { return _start; }
+ inline FrameTime end() const { return _end; }
+ inline const EventSink& event_sink() const { return _event_sink; }
+ inline EventSink& event_sink() { return _event_sink; }
+
+private:
+ SampleCount _nframes; ///< Number of actual time (Jack) frames this cycle
+ FrameTime _start; ///< Start frame of this cycle, timeline relative
+ FrameTime _end; ///< End frame of this cycle, timeline relative
+ EventSink _event_sink; ///< Sink for events generated in the audio thread
+};
+
+
+
+} // namespace Ingen
+
+#endif // PROCESSCONTEXT_H
+