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author | David Robillard <d@drobilla.net> | 2011-04-20 16:26:40 +0000 |
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committer | David Robillard <d@drobilla.net> | 2011-04-20 16:26:40 +0000 |
commit | 138a87e915ad3aff184730415105f94c874174bf (patch) | |
tree | 0d942bdddfdbcc3d969b4fce5592e770ab851b86 /src/server/EventSource.hpp | |
parent | 1f1758f4dda0ddaf01c0b1d3a756f9db8ddc979d (diff) | |
download | ingen-138a87e915ad3aff184730415105f94c874174bf.tar.gz ingen-138a87e915ad3aff184730415105f94c874174bf.tar.bz2 ingen-138a87e915ad3aff184730415105f94c874174bf.zip |
Rename Ingen::Engine to Ingen::Server (hopefully avoid odd name clases and fix #675).
git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@3184 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/server/EventSource.hpp')
-rw-r--r-- | src/server/EventSource.hpp | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/server/EventSource.hpp b/src/server/EventSource.hpp new file mode 100644 index 00000000..19d87ed9 --- /dev/null +++ b/src/server/EventSource.hpp @@ -0,0 +1,73 @@ +/* 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_EVENTSOURCE_HPP +#define INGEN_ENGINE_EVENTSOURCE_HPP + +#include "raul/Semaphore.hpp" +#include "raul/Slave.hpp" +#include "raul/List.hpp" + +namespace Ingen { +namespace Server { + +class Event; +class QueuedEvent; +class PostProcessor; +class ProcessContext; + +/** Source for events to run in the audio thread. + * + * The Driver gets events from an EventSource in the process callback + * (realtime audio thread) and executes them, then they are sent to the + * PostProcessor and finalised (post-processing thread). + */ +class EventSource : protected Raul::Slave +{ +public: + explicit EventSource(size_t queue_size); + virtual ~EventSource(); + + void process(PostProcessor& dest, ProcessContext& context, bool limit=true); + + bool empty() { return _events.empty(); } + + /** Signal that a blocking event is finished. + * + * This MUST be called by blocking events in their post_process() method + * to resume pre-processing of events. + */ + inline void unblock() { _blocking_semaphore.post(); } + +protected: + void push_queued(QueuedEvent* const ev); + + inline bool unprepared_events() { return (_prepared_back.get() != NULL); } + + virtual void _whipped(); ///< Prepare 1 event + +private: + Raul::List<Event*> _events; + Raul::AtomicPtr<Raul::List<Event*>::Node> _prepared_back; + Raul::Semaphore _blocking_semaphore; +}; + +} // namespace Server +} // namespace Ingen + +#endif // INGEN_ENGINE_EVENTSOURCE_HPP + |