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99 lines
2.2 KiB
99 lines
2.2 KiB
/*
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Copyright (C) 2001-2002 Stefan Westerfeld
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stefan@space.twc.de
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "artsmidi.h"
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#include "artsflow.h"
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#include "stdsynthmodule.h"
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#include "debug.h"
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#include "miditimercommon.h"
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#include "audiotimer.h"
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#include "flowsystem.h"
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using namespace std;
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using namespace Arts;
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static AudioTimer *AudioTimer_the = 0;
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AudioTimer::AudioTimer()
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{
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AudioTimer_the = this;
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samples = seconds = 0;
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}
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AudioTimer::~AudioTimer()
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{
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AudioTimer_the = 0;
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}
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TimeStamp AudioTimer::time()
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{
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return TimeStamp(seconds,
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(long)((float)samples / samplingRateFloat * 1000000.0));
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}
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void AudioTimer::notify(const Notification &)
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{
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list<AudioTimerCallback *>::iterator i;
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for(i = callbacks.begin(); i != callbacks.end(); i++)
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(*i)->updateTime();
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}
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void AudioTimer::calculateBlock(unsigned long s)
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{
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samples += s;
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while(samples > samplingRate)
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{
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samples -= samplingRate;
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seconds++;
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}
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Notification n;
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n.receiver = this;
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n.ID = 0;
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n.data = 0;
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n.internal = 0;
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NotificationManager::the()->send(n);
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}
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AudioTimer *AudioTimer::subscribe()
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{
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if(!AudioTimer_the)
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{
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new AudioTimer();
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AudioTimer_the->_node()->start();
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}
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else
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{
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AudioTimer_the->_copy();
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}
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return AudioTimer_the;
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}
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void AudioTimer::addCallback(AudioTimerCallback *callback)
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{
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callbacks.push_back(callback);
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}
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void AudioTimer::removeCallback(AudioTimerCallback *callback)
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{
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callbacks.remove(callback);
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}
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