- initial version

git-svn-id: http://moon:8086/svn/software/trunk/projects/RBM@14 b431acfa-c32f-4a4a-93f1-934dc6c82436
2014-09-24 17:21:29 +00:00
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+/*
+  ==============================================================================
+
+   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_TONEGENERATORAUDIOSOURCE_H_INCLUDED
+#define JUCE_TONEGENERATORAUDIOSOURCE_H_INCLUDED
+
+
+//==============================================================================
+/**
+    A simple AudioSource that generates a sine wave.
+
+*/
+class JUCE_API  ToneGeneratorAudioSource  : public AudioSource
+{
+public:
+    //==============================================================================
+    /** Creates a ToneGeneratorAudioSource. */
+    ToneGeneratorAudioSource();
+
+    /** Destructor. */
+    ~ToneGeneratorAudioSource();
+
+    //==============================================================================
+    /** Sets the signal's amplitude. */
+    void setAmplitude (float newAmplitude);
+
+    /** Sets the signal's frequency. */
+    void setFrequency (double newFrequencyHz);
+
+
+    //==============================================================================
+    /** Implementation of the AudioSource method. */
+    void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
+
+    /** Implementation of the AudioSource method. */
+    void releaseResources() override;
+
+    /** Implementation of the AudioSource method. */
+    void getNextAudioBlock (const AudioSourceChannelInfo&) override;
+
+
+private:
+    //==============================================================================
+    double frequency, sampleRate;
+    double currentPhase, phasePerSample;
+    float amplitude;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ToneGeneratorAudioSource)
+};
+
+
+#endif   // JUCE_TONEGENERATORAUDIOSOURCE_H_INCLUDED