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120 lines
4.7 KiB
C++
120 lines
4.7 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-10 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#ifndef __JUCE_MIXERAUDIOSOURCE_JUCEHEADER__
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#define __JUCE_MIXERAUDIOSOURCE_JUCEHEADER__
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#include "juce_AudioSource.h"
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#include "../../threads/juce_CriticalSection.h"
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#include "../../containers/juce_Array.h"
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#include "../../maths/juce_BigInteger.h"
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//==============================================================================
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/**
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An AudioSource that mixes together the output of a set of other AudioSources.
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Input sources can be added and removed while the mixer is running as long as their
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prepareToPlay() and releaseResources() methods are called before and after adding
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them to the mixer.
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*/
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class JUCE_API MixerAudioSource : public AudioSource
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{
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public:
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//==============================================================================
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/** Creates a MixerAudioSource.
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*/
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MixerAudioSource();
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/** Destructor. */
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~MixerAudioSource();
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//==============================================================================
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/** Adds an input source to the mixer.
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If the mixer is running you'll need to make sure that the input source
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is ready to play by calling its prepareToPlay() method before adding it.
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If the mixer is stopped, then its input sources will be automatically
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prepared when the mixer's prepareToPlay() method is called.
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@param newInput the source to add to the mixer
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@param deleteWhenRemoved if true, then this source will be deleted when
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the mixer is deleted or when removeAllInputs() is
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called (unless the source is previously removed
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with the removeInputSource method)
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*/
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void addInputSource (AudioSource* newInput, bool deleteWhenRemoved);
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/** Removes an input source.
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If the mixer is running, this will remove the source but not call its
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releaseResources() method, so the caller might want to do this manually.
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@param input the source to remove
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@param deleteSource whether to delete this source after it's been removed
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*/
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void removeInputSource (AudioSource* input, bool deleteSource);
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/** Removes all the input sources.
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If the mixer is running, this will remove the sources but not call their
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releaseResources() method, so the caller might want to do this manually.
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Any sources which were added with the deleteWhenRemoved flag set will be
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deleted by this method.
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*/
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void removeAllInputs();
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//==============================================================================
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/** Implementation of the AudioSource method.
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This will call prepareToPlay() on all its input sources.
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*/
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void prepareToPlay (int samplesPerBlockExpected, double sampleRate);
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/** Implementation of the AudioSource method.
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This will call releaseResources() on all its input sources.
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*/
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void releaseResources();
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/** Implementation of the AudioSource method. */
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void getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill);
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private:
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//==============================================================================
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Array <AudioSource*> inputs;
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BigInteger inputsToDelete;
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CriticalSection lock;
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AudioSampleBuffer tempBuffer;
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double currentSampleRate;
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int bufferSizeExpected;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MixerAudioSource);
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};
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#endif // __JUCE_MIXERAUDIOSOURCE_JUCEHEADER__
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