diff options
author | David Robillard <d@drobilla.net> | 2007-07-24 19:26:47 +0000 |
---|---|---|
committer | David Robillard <d@drobilla.net> | 2007-07-24 19:26:47 +0000 |
commit | bb1c49dfa484db080938cff6f8f70167c9026a1c (patch) | |
tree | 6f6382fcbfddfead6d5c32d19977aed8020d32e4 /src/libs/engine/QueuedEventSource.h | |
parent | f0f64e4425acfb8b8633a47faa70f87fc32a4399 (diff) | |
download | ingen-bb1c49dfa484db080938cff6f8f70167c9026a1c.tar.gz ingen-bb1c49dfa484db080938cff6f8f70167c9026a1c.tar.bz2 ingen-bb1c49dfa484db080938cff6f8f70167c9026a1c.zip |
Consistently rename all C++ files .cpp/.hpp.
Fix (some) inclusion guard names to not clash with other libs.
git-svn-id: http://svn.drobilla.net/lad/ingen@613 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/libs/engine/QueuedEventSource.h')
-rw-r--r-- | src/libs/engine/QueuedEventSource.h | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/src/libs/engine/QueuedEventSource.h b/src/libs/engine/QueuedEventSource.h deleted file mode 100644 index d0c17c0b..00000000 --- a/src/libs/engine/QueuedEventSource.h +++ /dev/null @@ -1,110 +0,0 @@ -/* 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 QUEUEDEVENTSOURCE_H -#define QUEUEDEVENTSOURCE_H - -#include <cstdlib> -#include <pthread.h> -#include "types.h" -#include <raul/Semaphore.h> -#include <raul/SRSWQueue.h> -#include <raul/Slave.h> -#include "Event.h" -#include "EventSource.h" - -namespace Ingen { - -class QueuedEvent; -class PostProcessor; - - -/** Queue of events that need processing before reaching the audio thread. - * - * Implemented as a deque (ringbuffer) in a circular array. Pushing and - * popping are threadsafe, as long as a single thread pushes and a single - * thread pops (ie this data structure is threadsafe, but the push and pop - * methods themselves are not). Creating an instance of this class spawns - * a pre-processing thread to prepare queued events. - * - * This class is it's own slave. :) - */ -class QueuedEventSource : public EventSource, protected Raul::Slave -{ -public: - QueuedEventSource(size_t queued_size, size_t stamped_size); - ~QueuedEventSource(); - - void activate() { Slave::start(); } - void deactivate() { Slave::stop(); } - - void process(PostProcessor& dest, SampleCount nframes, FrameTime cycle_start, FrameTime cycle_end); - - void unblock(); - -protected: - void push_queued(QueuedEvent* const ev); - inline void push_stamped(Event* const ev) { _stamped_queue.push(ev); } - - Event* pop_earliest_queued_before(const SampleCount time); - inline Event* pop_earliest_stamped_before(const SampleCount time); - - bool unprepared_events() { return (_prepared_back != _back); } - - virtual void _whipped(); ///< Prepare 1 event - -private: - // Note that it's crucially important which functions access which of these - // variables, to maintain threadsafeness. - - //(FIXME: make this a separate class?) - // 2-part queue for events that require pre-processing: - size_t _front; ///< Front of queue - size_t _back; ///< Back of entire queue (1 past index of back element) - size_t _prepared_back; ///< Back of prepared section (1 past index of back prepared element) - const size_t _size; - QueuedEvent** _events; - Raul::Semaphore _blocking_semaphore; - - /** Queue for timestamped events (no pre-processing). */ - Raul::SRSWQueue<Event*> _stamped_queue; -}; - - -/** Pops the realtime (timestamped, not preprocessed) event off the realtime queue. - * - * Engine will use the sample timestamps of returned events directly and execute the - * event with sample accuracy. Timestamps in the past will be bumped forward to - * the beginning of the cycle (offset 0), when eg. skipped cycles occur. - */ -inline Event* -QueuedEventSource::pop_earliest_stamped_before(const SampleCount time) -{ - Event* ret = NULL; - - if (!_stamped_queue.empty() && _stamped_queue.front()->time() < time) { - ret = _stamped_queue.front(); - _stamped_queue.pop(); - } - - return ret; -} - - -} // namespace Ingen - -#endif // QUEUEDEVENTSOURCE_H |