- clean working copy for leaving SVN

2022-06-28 19:04:46 +02:00
parent 62a2d47cb3
commit 762b8f0e7d
1966 changed files with 699872 additions and 126 deletions
@@ -0,0 +1,101 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software Ltd.
+
+   Permission is granted to use this software under the terms of either:
+   a) the GPL v2 (or any later version)
+   b) the Affero GPL v3
+
+   Details of these licenses can be found at: www.gnu.org/licenses
+
+   JUCE 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 more details.
+
+   ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+#ifndef JUCE_MIXERAUDIOSOURCE_H_INCLUDED
+#define JUCE_MIXERAUDIOSOURCE_H_INCLUDED
+
+
+//==============================================================================
+/**
+    An AudioSource that mixes together the output of a set of other AudioSources.
+
+    Input sources can be added and removed while the mixer is running as long as their
+    prepareToPlay() and releaseResources() methods are called before and after adding
+    them to the mixer.
+*/
+class JUCE_API  MixerAudioSource  : public AudioSource
+{
+public:
+    //==============================================================================
+    /** Creates a MixerAudioSource. */
+    MixerAudioSource();
+
+    /** Destructor. */
+    ~MixerAudioSource();
+
+    //==============================================================================
+    /** Adds an input source to the mixer.
+
+        If the mixer is running you'll need to make sure that the input source
+        is ready to play by calling its prepareToPlay() method before adding it.
+        If the mixer is stopped, then its input sources will be automatically
+        prepared when the mixer's prepareToPlay() method is called.
+
+        @param newInput             the source to add to the mixer
+        @param deleteWhenRemoved    if true, then this source will be deleted when
+                                    no longer needed by the mixer.
+    */
+    void addInputSource (AudioSource* newInput, bool deleteWhenRemoved);
+
+    /** Removes an input source.
+        If the source was added by calling addInputSource() with the deleteWhenRemoved
+        flag set, it will be deleted by this method.
+    */
+    void removeInputSource (AudioSource* input);
+
+    /** Removes all the input sources.
+        Any sources which were added by calling addInputSource() with the deleteWhenRemoved
+        flag set will be deleted by this method.
+    */
+    void removeAllInputs();
+
+    //==============================================================================
+    /** Implementation of the AudioSource method.
+        This will call prepareToPlay() on all its input sources.
+    */
+    void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
+
+    /** Implementation of the AudioSource method.
+        This will call releaseResources() on all its input sources.
+    */
+    void releaseResources() override;
+
+    /** Implementation of the AudioSource method. */
+    void getNextAudioBlock (const AudioSourceChannelInfo&) override;
+
+
+private:
+    //==============================================================================
+    Array<AudioSource*> inputs;
+    BigInteger inputsToDelete;
+    CriticalSection lock;
+    AudioSampleBuffer tempBuffer;
+    double currentSampleRate;
+    int bufferSizeExpected;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MixerAudioSource)
+};
+
+
+#endif   // JUCE_MIXERAUDIOSOURCE_H_INCLUDED