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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /arts/midi/audiosync_impl.cc
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
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Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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diff --git a/arts/midi/audiosync_impl.cc b/arts/midi/audiosync_impl.cc
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+ /*
+
+ Copyright (C) 2001-2002 Stefan Westerfeld
+ stefan@space.twc.de
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+
+ */
+
+#include "audiosync_impl.h"
+#include "midisyncgroup_impl.h"
+#include "audiotimer.h"
+#include "audiosubsys.h"
+#include "timestampmath.h"
+
+#undef AUDIO_DEBUG_DRIFT
+
+using namespace std;
+using namespace Arts;
+
+namespace Arts {
+ static list<AudioSync_impl *> audioSyncImplList;
+}
+
+void AudioSync_impl::AudioSyncEvent::execute()
+{
+ list<SynthModule>::iterator i;
+
+ for(i = startModules.begin(); i != startModules.end(); i++)
+ i->start();
+
+ for(i = stopModules.begin(); i != stopModules.end(); i++)
+ i->stop();
+}
+
+AudioSync_impl::AudioSync_impl()
+ : newEvent(new AudioSyncEvent), syncGroup(0)
+{
+ syncOffset = TimeStamp(0,0);
+
+ timer = AudioTimer::subscribe();
+ timer->addCallback(this);
+
+ audioSyncImplList.push_back(this);
+}
+
+AudioSync_impl::~AudioSync_impl()
+{
+ delete newEvent;
+
+ while(!events.empty())
+ {
+ delete events.front();
+ events.pop_front();
+ }
+
+ if(syncGroup)
+ {
+ syncGroup->audioSyncDied(this);
+ syncGroup = 0;
+ }
+ audioSyncImplList.remove(this);
+ timer->removeCallback(this);
+ timer->unsubscribe();
+}
+
+TimeStamp AudioSync_impl::time()
+{
+ if(syncGroup)
+ return syncGroup->time();
+ else
+ return audioTime();
+}
+
+TimeStamp AudioSync_impl::playTime()
+{
+ if(syncGroup)
+ return syncGroup->playTime();
+ else
+ return audioPlayTime();
+}
+
+TimeStamp AudioSync_impl::audioTime()
+{
+ return timer->time();
+}
+
+TimeStamp AudioSync_impl::audioPlayTime()
+{
+ double delay = AudioSubSystem::the()->outputDelay();
+
+ TimeStamp time = audioTime();
+ timeStampDec(time,timeStampFromDouble(delay));
+ return time;
+}
+
+TimeStamp AudioSync_impl::clientTime()
+{
+ TimeStamp time = audioTime();
+ timeStampDec(time, syncOffset);
+ return time;
+}
+
+void AudioSync_impl::queueStart(SynthModule synthModule)
+{
+ newEvent->startModules.push_back(synthModule);
+}
+
+void AudioSync_impl::queueStop(SynthModule synthModule)
+{
+ newEvent->stopModules.push_back(synthModule);
+}
+
+void AudioSync_impl::execute()
+{
+ newEvent->execute();
+ newEvent->startModules.clear();
+ newEvent->stopModules.clear();
+}
+
+void AudioSync_impl::executeAt(const TimeStamp& timeStamp)
+{
+ newEvent->time = timeStamp;
+ if(syncGroup)
+ timeStampInc(newEvent->time, syncOffset);
+
+ events.push_back(newEvent);
+
+ newEvent = new AudioSyncEvent;
+}
+
+void AudioSync_impl::updateTime()
+{
+ TimeStamp now = audioTime();
+ list<AudioSyncEvent*>::iterator i;
+
+ i = events.begin();
+ while(i != events.end())
+ {
+ AudioSyncEvent *event = *i;
+ TimeStamp& eventTime = event->time;
+
+ if( now.sec > eventTime.sec
+ || ((now.sec == eventTime.sec) && (now.usec > eventTime.usec)))
+ {
+ event->execute();
+ delete event;
+ i = events.erase(i);
+ }
+ else
+ {
+ i++;
+ }
+ }
+}
+
+void AudioSync_impl::setSyncGroup(MidiSyncGroup_impl *newSyncGroup)
+{
+ syncGroup = newSyncGroup;
+}
+
+void AudioSync_impl::synchronizeTo(const TimeStamp& time)
+{
+#ifdef AUDIO_DEBUG_DRIFT
+ TimeStamp drift = syncOffset; // debug drift
+#endif
+
+ syncOffset = audioPlayTime();
+ timeStampDec(syncOffset, time);
+
+#ifdef AUDIO_DEBUG_DRIFT
+ timeStampDec(drift, syncOffset); // debug drift
+ printf("SYNC DRIFT %30s %30s: %f\n",
+ "AudioSync", "AudioSync", timeStampToDouble(drift));
+#endif
+}
+
+AudioSync_impl *AudioSync_impl::find(AudioSync audioSync)
+{
+ list<AudioSync_impl *>::iterator i;
+
+ for(i = audioSyncImplList.begin(); i != audioSyncImplList.end(); i++)
+ {
+ if((*i)->_isEqual(audioSync._base()))
+ return (*i);
+ }
+ return 0;
+}
+
+namespace Arts { REGISTER_IMPLEMENTATION(AudioSync_impl); }