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author | David Robillard <d@drobilla.net> | 2008-09-30 16:50:21 +0000 |
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committer | David Robillard <d@drobilla.net> | 2008-09-30 16:50:21 +0000 |
commit | 93850c202de8b073a1ce1dd8bd246d407bce4e2f (patch) | |
tree | 6910b135bf4eff12de1af116cef73f6e9c107cd0 /src/engine/ProcessContext.hpp | |
parent | a8bf5272d096de73507d2eab47f282c345f4ca8a (diff) | |
download | ingen-93850c202de8b073a1ce1dd8bd246d407bce4e2f.tar.gz ingen-93850c202de8b073a1ce1dd8bd246d407bce4e2f.tar.bz2 ingen-93850c202de8b073a1ce1dd8bd246d407bce4e2f.zip |
Flatten ingen source directory heirarchy a bit.
git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@1551 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/engine/ProcessContext.hpp')
-rw-r--r-- | src/engine/ProcessContext.hpp | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/engine/ProcessContext.hpp b/src/engine/ProcessContext.hpp new file mode 100644 index 00000000..57677126 --- /dev/null +++ b/src/engine/ProcessContext.hpp @@ -0,0 +1,71 @@ +/* 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 + |