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111 lines
4.3 KiB
C++
111 lines
4.3 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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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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@tags{Audio}
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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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MixerAudioSource();
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/** Destructor. */
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~MixerAudioSource() override;
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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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no longer needed by the mixer.
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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 source was added by calling addInputSource() with the deleteWhenRemoved
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flag set, it will be deleted by this method.
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*/
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void removeInputSource (AudioSource* input);
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/** Removes all the input sources.
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Any sources which were added by calling addInputSource() with the deleteWhenRemoved
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flag set will be 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) override;
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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() override;
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/** Implementation of the AudioSource method. */
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void getNextAudioBlock (const AudioSourceChannelInfo&) override;
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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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AudioBuffer<float> 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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} // namespace juce
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