mirror of
https://github.com/juce-framework/JUCE.git
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Added Animated App template and examples
This commit is contained in:
Felix Faire
parent
fefcf7aca6
commit
ff6520a89a
1141 changed files with 438491 additions and 94 deletions
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@ -0,0 +1,181 @@
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found 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.juce.com for more information.
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==============================================================================
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*/
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#ifndef JUCE_AUDIOSOURCE_H_INCLUDED
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#define JUCE_AUDIOSOURCE_H_INCLUDED
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//==============================================================================
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/**
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Used by AudioSource::getNextAudioBlock().
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*/
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struct JUCE_API AudioSourceChannelInfo
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{
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/** Creates an uninitialised AudioSourceChannelInfo. */
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AudioSourceChannelInfo() noexcept
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{
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}
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/** Creates an AudioSourceChannelInfo. */
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AudioSourceChannelInfo (AudioSampleBuffer* bufferToUse,
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int startSampleOffset, int numSamplesToUse) noexcept
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: buffer (bufferToUse),
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startSample (startSampleOffset),
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numSamples (numSamplesToUse)
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{
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}
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/** Creates an AudioSourceChannelInfo that uses the whole of a buffer.
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Note that the buffer provided must not be deleted while the
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AudioSourceChannelInfo is still using it.
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*/
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explicit AudioSourceChannelInfo (AudioSampleBuffer& bufferToUse) noexcept
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: buffer (&bufferToUse),
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startSample (0),
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numSamples (bufferToUse.getNumSamples())
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{
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}
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/** The destination buffer to fill with audio data.
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When the AudioSource::getNextAudioBlock() method is called, the active section
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of this buffer should be filled with whatever output the source produces.
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Only the samples specified by the startSample and numSamples members of this structure
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should be affected by the call.
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The contents of the buffer when it is passed to the AudioSource::getNextAudioBlock()
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method can be treated as the input if the source is performing some kind of filter operation,
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but should be cleared if this is not the case - the clearActiveBufferRegion() is
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a handy way of doing this.
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The number of channels in the buffer could be anything, so the AudioSource
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must cope with this in whatever way is appropriate for its function.
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*/
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AudioSampleBuffer* buffer;
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/** The first sample in the buffer from which the callback is expected
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to write data. */
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int startSample;
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/** The number of samples in the buffer which the callback is expected to
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fill with data. */
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int numSamples;
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/** Convenient method to clear the buffer if the source is not producing any data. */
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void clearActiveBufferRegion() const
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{
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if (buffer != nullptr)
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buffer->clear (startSample, numSamples);
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}
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};
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//==============================================================================
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/**
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Base class for objects that can produce a continuous stream of audio.
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An AudioSource has two states: 'prepared' and 'unprepared'.
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When a source needs to be played, it is first put into a 'prepared' state by a call to
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prepareToPlay(), and then repeated calls will be made to its getNextAudioBlock() method to
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process the audio data.
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Once playback has finished, the releaseResources() method is called to put the stream
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back into an 'unprepared' state.
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@see AudioFormatReaderSource, ResamplingAudioSource
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*/
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class JUCE_API AudioSource
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{
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protected:
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//==============================================================================
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/** Creates an AudioSource. */
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AudioSource() noexcept {}
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public:
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/** Destructor. */
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virtual ~AudioSource() {}
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//==============================================================================
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/** Tells the source to prepare for playing.
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An AudioSource has two states: prepared and unprepared.
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The prepareToPlay() method is guaranteed to be called at least once on an 'unpreprared'
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source to put it into a 'prepared' state before any calls will be made to getNextAudioBlock().
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This callback allows the source to initialise any resources it might need when playing.
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Once playback has finished, the releaseResources() method is called to put the stream
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back into an 'unprepared' state.
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Note that this method could be called more than once in succession without
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a matching call to releaseResources(), so make sure your code is robust and
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can handle that kind of situation.
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@param samplesPerBlockExpected the number of samples that the source
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will be expected to supply each time its
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getNextAudioBlock() method is called. This
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number may vary slightly, because it will be dependent
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on audio hardware callbacks, and these aren't
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guaranteed to always use a constant block size, so
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the source should be able to cope with small variations.
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@param sampleRate the sample rate that the output will be used at - this
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is needed by sources such as tone generators.
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@see releaseResources, getNextAudioBlock
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*/
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virtual void prepareToPlay (int samplesPerBlockExpected,
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double sampleRate) = 0;
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/** Allows the source to release anything it no longer needs after playback has stopped.
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This will be called when the source is no longer going to have its getNextAudioBlock()
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method called, so it should release any spare memory, etc. that it might have
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allocated during the prepareToPlay() call.
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Note that there's no guarantee that prepareToPlay() will actually have been called before
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releaseResources(), and it may be called more than once in succession, so make sure your
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code is robust and doesn't make any assumptions about when it will be called.
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@see prepareToPlay, getNextAudioBlock
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*/
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virtual void releaseResources() = 0;
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/** Called repeatedly to fetch subsequent blocks of audio data.
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After calling the prepareToPlay() method, this callback will be made each
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time the audio playback hardware (or whatever other destination the audio
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data is going to) needs another block of data.
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It will generally be called on a high-priority system thread, or possibly even
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an interrupt, so be careful not to do too much work here, as that will cause
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audio glitches!
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@see AudioSourceChannelInfo, prepareToPlay, releaseResources
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*/
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virtual void getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill) = 0;
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};
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#endif // JUCE_AUDIOSOURCE_H_INCLUDED
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@ -0,0 +1,259 @@
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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|
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Details of these licenses can be found at: www.gnu.org/licenses
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|
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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.juce.com for more information.
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==============================================================================
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*/
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BufferingAudioSource::BufferingAudioSource (PositionableAudioSource* s,
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TimeSliceThread& thread,
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const bool deleteSourceWhenDeleted,
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const int bufferSizeSamples,
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const int numChannels)
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: source (s, deleteSourceWhenDeleted),
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backgroundThread (thread),
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numberOfSamplesToBuffer (jmax (1024, bufferSizeSamples)),
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numberOfChannels (numChannels),
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bufferValidStart (0),
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bufferValidEnd (0),
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nextPlayPos (0),
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sampleRate (0),
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wasSourceLooping (false),
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isPrepared (false)
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{
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jassert (source != nullptr);
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jassert (numberOfSamplesToBuffer > 1024); // not much point using this class if you're
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// not using a larger buffer..
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}
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BufferingAudioSource::~BufferingAudioSource()
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{
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releaseResources();
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}
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//==============================================================================
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void BufferingAudioSource::prepareToPlay (int samplesPerBlockExpected, double newSampleRate)
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{
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const int bufferSizeNeeded = jmax (samplesPerBlockExpected * 2, numberOfSamplesToBuffer);
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if (newSampleRate != sampleRate
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|| bufferSizeNeeded != buffer.getNumSamples()
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|| ! isPrepared)
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{
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backgroundThread.removeTimeSliceClient (this);
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isPrepared = true;
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sampleRate = newSampleRate;
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source->prepareToPlay (samplesPerBlockExpected, newSampleRate);
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buffer.setSize (numberOfChannels, bufferSizeNeeded);
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buffer.clear();
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bufferValidStart = 0;
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bufferValidEnd = 0;
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backgroundThread.addTimeSliceClient (this);
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while (bufferValidEnd - bufferValidStart < jmin (((int) newSampleRate) / 4,
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buffer.getNumSamples() / 2))
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{
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backgroundThread.moveToFrontOfQueue (this);
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Thread::sleep (5);
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}
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}
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}
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void BufferingAudioSource::releaseResources()
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{
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isPrepared = false;
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backgroundThread.removeTimeSliceClient (this);
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buffer.setSize (numberOfChannels, 0);
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source->releaseResources();
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}
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void BufferingAudioSource::getNextAudioBlock (const AudioSourceChannelInfo& info)
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{
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const ScopedLock sl (bufferStartPosLock);
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const int validStart = (int) (jlimit (bufferValidStart, bufferValidEnd, nextPlayPos) - nextPlayPos);
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const int validEnd = (int) (jlimit (bufferValidStart, bufferValidEnd, nextPlayPos + info.numSamples) - nextPlayPos);
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if (validStart == validEnd)
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{
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// total cache miss
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info.clearActiveBufferRegion();
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}
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else
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{
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if (validStart > 0)
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info.buffer->clear (info.startSample, validStart); // partial cache miss at start
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if (validEnd < info.numSamples)
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info.buffer->clear (info.startSample + validEnd,
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info.numSamples - validEnd); // partial cache miss at end
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if (validStart < validEnd)
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{
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for (int chan = jmin (numberOfChannels, info.buffer->getNumChannels()); --chan >= 0;)
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{
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jassert (buffer.getNumSamples() > 0);
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const int startBufferIndex = (int) ((validStart + nextPlayPos) % buffer.getNumSamples());
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const int endBufferIndex = (int) ((validEnd + nextPlayPos) % buffer.getNumSamples());
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if (startBufferIndex < endBufferIndex)
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{
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info.buffer->copyFrom (chan, info.startSample + validStart,
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buffer,
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chan, startBufferIndex,
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validEnd - validStart);
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}
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else
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{
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const int initialSize = buffer.getNumSamples() - startBufferIndex;
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info.buffer->copyFrom (chan, info.startSample + validStart,
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buffer,
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chan, startBufferIndex,
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initialSize);
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info.buffer->copyFrom (chan, info.startSample + validStart + initialSize,
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buffer,
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chan, 0,
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(validEnd - validStart) - initialSize);
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}
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}
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}
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nextPlayPos += info.numSamples;
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}
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}
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int64 BufferingAudioSource::getNextReadPosition() const
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{
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jassert (source->getTotalLength() > 0);
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return (source->isLooping() && nextPlayPos > 0)
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? nextPlayPos % source->getTotalLength()
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: nextPlayPos;
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}
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void BufferingAudioSource::setNextReadPosition (int64 newPosition)
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{
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const ScopedLock sl (bufferStartPosLock);
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nextPlayPos = newPosition;
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backgroundThread.moveToFrontOfQueue (this);
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}
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bool BufferingAudioSource::readNextBufferChunk()
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{
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int64 newBVS, newBVE, sectionToReadStart, sectionToReadEnd;
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|
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{
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const ScopedLock sl (bufferStartPosLock);
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if (wasSourceLooping != isLooping())
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{
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wasSourceLooping = isLooping();
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bufferValidStart = 0;
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bufferValidEnd = 0;
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}
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newBVS = jmax ((int64) 0, nextPlayPos);
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newBVE = newBVS + buffer.getNumSamples() - 4;
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sectionToReadStart = 0;
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sectionToReadEnd = 0;
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|
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const int maxChunkSize = 2048;
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|
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if (newBVS < bufferValidStart || newBVS >= bufferValidEnd)
|
||||
{
|
||||
newBVE = jmin (newBVE, newBVS + maxChunkSize);
|
||||
|
||||
sectionToReadStart = newBVS;
|
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sectionToReadEnd = newBVE;
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||||
|
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bufferValidStart = 0;
|
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bufferValidEnd = 0;
|
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}
|
||||
else if (std::abs ((int) (newBVS - bufferValidStart)) > 512
|
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|| std::abs ((int) (newBVE - bufferValidEnd)) > 512)
|
||||
{
|
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newBVE = jmin (newBVE, bufferValidEnd + maxChunkSize);
|
||||
|
||||
sectionToReadStart = bufferValidEnd;
|
||||
sectionToReadEnd = newBVE;
|
||||
|
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bufferValidStart = newBVS;
|
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bufferValidEnd = jmin (bufferValidEnd, newBVE);
|
||||
}
|
||||
}
|
||||
|
||||
if (sectionToReadStart == sectionToReadEnd)
|
||||
return false;
|
||||
|
||||
jassert (buffer.getNumSamples() > 0);
|
||||
const int bufferIndexStart = (int) (sectionToReadStart % buffer.getNumSamples());
|
||||
const int bufferIndexEnd = (int) (sectionToReadEnd % buffer.getNumSamples());
|
||||
|
||||
if (bufferIndexStart < bufferIndexEnd)
|
||||
{
|
||||
readBufferSection (sectionToReadStart,
|
||||
(int) (sectionToReadEnd - sectionToReadStart),
|
||||
bufferIndexStart);
|
||||
}
|
||||
else
|
||||
{
|
||||
const int initialSize = buffer.getNumSamples() - bufferIndexStart;
|
||||
|
||||
readBufferSection (sectionToReadStart,
|
||||
initialSize,
|
||||
bufferIndexStart);
|
||||
|
||||
readBufferSection (sectionToReadStart + initialSize,
|
||||
(int) (sectionToReadEnd - sectionToReadStart) - initialSize,
|
||||
0);
|
||||
}
|
||||
|
||||
{
|
||||
const ScopedLock sl2 (bufferStartPosLock);
|
||||
|
||||
bufferValidStart = newBVS;
|
||||
bufferValidEnd = newBVE;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void BufferingAudioSource::readBufferSection (const int64 start, const int length, const int bufferOffset)
|
||||
{
|
||||
if (source->getNextReadPosition() != start)
|
||||
source->setNextReadPosition (start);
|
||||
|
||||
AudioSourceChannelInfo info (&buffer, bufferOffset, length);
|
||||
source->getNextAudioBlock (info);
|
||||
}
|
||||
|
||||
int BufferingAudioSource::useTimeSlice()
|
||||
{
|
||||
return readNextBufferChunk() ? 1 : 100;
|
||||
}
|
||||
|
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@ -0,0 +1,111 @@
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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_BUFFERINGAUDIOSOURCE_H_INCLUDED
|
||||
#define JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED
|
||||
|
||||
|
||||
//==============================================================================
|
||||
/**
|
||||
An AudioSource which takes another source as input, and buffers it using a thread.
|
||||
|
||||
Create this as a wrapper around another thread, and it will read-ahead with
|
||||
a background thread to smooth out playback. You can either create one of these
|
||||
directly, or use it indirectly using an AudioTransportSource.
|
||||
|
||||
@see PositionableAudioSource, AudioTransportSource
|
||||
*/
|
||||
class JUCE_API BufferingAudioSource : public PositionableAudioSource,
|
||||
private TimeSliceClient
|
||||
{
|
||||
public:
|
||||
//==============================================================================
|
||||
/** Creates a BufferingAudioSource.
|
||||
|
||||
@param source the input source to read from
|
||||
@param backgroundThread a background thread that will be used for the
|
||||
background read-ahead. This object must not be deleted
|
||||
until after any BufferedAudioSources that are using it
|
||||
have been deleted!
|
||||
@param deleteSourceWhenDeleted if true, then the input source object will
|
||||
be deleted when this object is deleted
|
||||
@param numberOfSamplesToBuffer the size of buffer to use for reading ahead
|
||||
@param numberOfChannels the number of channels that will be played
|
||||
*/
|
||||
BufferingAudioSource (PositionableAudioSource* source,
|
||||
TimeSliceThread& backgroundThread,
|
||||
bool deleteSourceWhenDeleted,
|
||||
int numberOfSamplesToBuffer,
|
||||
int numberOfChannels = 2);
|
||||
|
||||
/** Destructor.
|
||||
|
||||
The input source may be deleted depending on whether the deleteSourceWhenDeleted
|
||||
flag was set in the constructor.
|
||||
*/
|
||||
~BufferingAudioSource();
|
||||
|
||||
//==============================================================================
|
||||
/** 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;
|
||||
|
||||
//==============================================================================
|
||||
/** Implements the PositionableAudioSource method. */
|
||||
void setNextReadPosition (int64 newPosition) override;
|
||||
|
||||
/** Implements the PositionableAudioSource method. */
|
||||
int64 getNextReadPosition() const override;
|
||||
|
||||
/** Implements the PositionableAudioSource method. */
|
||||
int64 getTotalLength() const override { return source->getTotalLength(); }
|
||||
|
||||
/** Implements the PositionableAudioSource method. */
|
||||
bool isLooping() const override { return source->isLooping(); }
|
||||
|
||||
private:
|
||||
//==============================================================================
|
||||
OptionalScopedPointer<PositionableAudioSource> source;
|
||||
TimeSliceThread& backgroundThread;
|
||||
int numberOfSamplesToBuffer, numberOfChannels;
|
||||
AudioSampleBuffer buffer;
|
||||
CriticalSection bufferStartPosLock;
|
||||
int64 volatile bufferValidStart, bufferValidEnd, nextPlayPos;
|
||||
double volatile sampleRate;
|
||||
bool wasSourceLooping, isPrepared;
|
||||
|
||||
bool readNextBufferChunk();
|
||||
void readBufferSection (int64 start, int length, int bufferOffset);
|
||||
int useTimeSlice() override;
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BufferingAudioSource)
|
||||
};
|
||||
|
||||
|
||||
#endif // JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED
|
||||
|
|
@ -0,0 +1,184 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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.
|
||||
|
||||
==============================================================================
|
||||
*/
|
||||
|
||||
ChannelRemappingAudioSource::ChannelRemappingAudioSource (AudioSource* const source_,
|
||||
const bool deleteSourceWhenDeleted)
|
||||
: source (source_, deleteSourceWhenDeleted),
|
||||
requiredNumberOfChannels (2)
|
||||
{
|
||||
remappedInfo.buffer = &buffer;
|
||||
remappedInfo.startSample = 0;
|
||||
}
|
||||
|
||||
ChannelRemappingAudioSource::~ChannelRemappingAudioSource() {}
|
||||
|
||||
//==============================================================================
|
||||
void ChannelRemappingAudioSource::setNumberOfChannelsToProduce (const int requiredNumberOfChannels_)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
requiredNumberOfChannels = requiredNumberOfChannels_;
|
||||
}
|
||||
|
||||
void ChannelRemappingAudioSource::clearAllMappings()
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
remappedInputs.clear();
|
||||
remappedOutputs.clear();
|
||||
}
|
||||
|
||||
void ChannelRemappingAudioSource::setInputChannelMapping (const int destIndex, const int sourceIndex)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
while (remappedInputs.size() < destIndex)
|
||||
remappedInputs.add (-1);
|
||||
|
||||
remappedInputs.set (destIndex, sourceIndex);
|
||||
}
|
||||
|
||||
void ChannelRemappingAudioSource::setOutputChannelMapping (const int sourceIndex, const int destIndex)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
while (remappedOutputs.size() < sourceIndex)
|
||||
remappedOutputs.add (-1);
|
||||
|
||||
remappedOutputs.set (sourceIndex, destIndex);
|
||||
}
|
||||
|
||||
int ChannelRemappingAudioSource::getRemappedInputChannel (const int inputChannelIndex) const
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
if (inputChannelIndex >= 0 && inputChannelIndex < remappedInputs.size())
|
||||
return remappedInputs.getUnchecked (inputChannelIndex);
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
int ChannelRemappingAudioSource::getRemappedOutputChannel (const int outputChannelIndex) const
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
if (outputChannelIndex >= 0 && outputChannelIndex < remappedOutputs.size())
|
||||
return remappedOutputs .getUnchecked (outputChannelIndex);
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
void ChannelRemappingAudioSource::prepareToPlay (int samplesPerBlockExpected, double sampleRate)
|
||||
{
|
||||
source->prepareToPlay (samplesPerBlockExpected, sampleRate);
|
||||
}
|
||||
|
||||
void ChannelRemappingAudioSource::releaseResources()
|
||||
{
|
||||
source->releaseResources();
|
||||
}
|
||||
|
||||
void ChannelRemappingAudioSource::getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
buffer.setSize (requiredNumberOfChannels, bufferToFill.numSamples, false, false, true);
|
||||
|
||||
const int numChans = bufferToFill.buffer->getNumChannels();
|
||||
|
||||
for (int i = 0; i < buffer.getNumChannels(); ++i)
|
||||
{
|
||||
const int remappedChan = getRemappedInputChannel (i);
|
||||
|
||||
if (remappedChan >= 0 && remappedChan < numChans)
|
||||
{
|
||||
buffer.copyFrom (i, 0, *bufferToFill.buffer,
|
||||
remappedChan,
|
||||
bufferToFill.startSample,
|
||||
bufferToFill.numSamples);
|
||||
}
|
||||
else
|
||||
{
|
||||
buffer.clear (i, 0, bufferToFill.numSamples);
|
||||
}
|
||||
}
|
||||
|
||||
remappedInfo.numSamples = bufferToFill.numSamples;
|
||||
|
||||
source->getNextAudioBlock (remappedInfo);
|
||||
|
||||
bufferToFill.clearActiveBufferRegion();
|
||||
|
||||
for (int i = 0; i < requiredNumberOfChannels; ++i)
|
||||
{
|
||||
const int remappedChan = getRemappedOutputChannel (i);
|
||||
|
||||
if (remappedChan >= 0 && remappedChan < numChans)
|
||||
{
|
||||
bufferToFill.buffer->addFrom (remappedChan, bufferToFill.startSample,
|
||||
buffer, i, 0, bufferToFill.numSamples);
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
XmlElement* ChannelRemappingAudioSource::createXml() const
|
||||
{
|
||||
XmlElement* e = new XmlElement ("MAPPINGS");
|
||||
String ins, outs;
|
||||
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
for (int i = 0; i < remappedInputs.size(); ++i)
|
||||
ins << remappedInputs.getUnchecked(i) << ' ';
|
||||
|
||||
for (int i = 0; i < remappedOutputs.size(); ++i)
|
||||
outs << remappedOutputs.getUnchecked(i) << ' ';
|
||||
|
||||
e->setAttribute ("inputs", ins.trimEnd());
|
||||
e->setAttribute ("outputs", outs.trimEnd());
|
||||
|
||||
return e;
|
||||
}
|
||||
|
||||
void ChannelRemappingAudioSource::restoreFromXml (const XmlElement& e)
|
||||
{
|
||||
if (e.hasTagName ("MAPPINGS"))
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
clearAllMappings();
|
||||
|
||||
StringArray ins, outs;
|
||||
ins.addTokens (e.getStringAttribute ("inputs"), false);
|
||||
outs.addTokens (e.getStringAttribute ("outputs"), false);
|
||||
|
||||
for (int i = 0; i < ins.size(); ++i)
|
||||
remappedInputs.add (ins[i].getIntValue());
|
||||
|
||||
for (int i = 0; i < outs.size(); ++i)
|
||||
remappedOutputs.add (outs[i].getIntValue());
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,143 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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_CHANNELREMAPPINGAUDIOSOURCE_H_INCLUDED
|
||||
#define JUCE_CHANNELREMAPPINGAUDIOSOURCE_H_INCLUDED
|
||||
|
||||
|
||||
//==============================================================================
|
||||
/**
|
||||
An AudioSource that takes the audio from another source, and re-maps its
|
||||
input and output channels to a different arrangement.
|
||||
|
||||
You can use this to increase or decrease the number of channels that an
|
||||
audio source uses, or to re-order those channels.
|
||||
|
||||
Call the reset() method before using it to set up a default mapping, and then
|
||||
the setInputChannelMapping() and setOutputChannelMapping() methods to
|
||||
create an appropriate mapping, otherwise no channels will be connected and
|
||||
it'll produce silence.
|
||||
|
||||
@see AudioSource
|
||||
*/
|
||||
class ChannelRemappingAudioSource : public AudioSource
|
||||
{
|
||||
public:
|
||||
//==============================================================================
|
||||
/** Creates a remapping source that will pass on audio from the given input.
|
||||
|
||||
@param source the input source to use. Make sure that this doesn't
|
||||
get deleted before the ChannelRemappingAudioSource object
|
||||
@param deleteSourceWhenDeleted if true, the input source will be deleted
|
||||
when this object is deleted, if false, the caller is
|
||||
responsible for its deletion
|
||||
*/
|
||||
ChannelRemappingAudioSource (AudioSource* source,
|
||||
bool deleteSourceWhenDeleted);
|
||||
|
||||
/** Destructor. */
|
||||
~ChannelRemappingAudioSource();
|
||||
|
||||
//==============================================================================
|
||||
/** Specifies a number of channels that this audio source must produce from its
|
||||
getNextAudioBlock() callback.
|
||||
*/
|
||||
void setNumberOfChannelsToProduce (int requiredNumberOfChannels);
|
||||
|
||||
/** Clears any mapped channels.
|
||||
|
||||
After this, no channels are mapped, so this object will produce silence. Create
|
||||
some mappings with setInputChannelMapping() and setOutputChannelMapping().
|
||||
*/
|
||||
void clearAllMappings();
|
||||
|
||||
/** Creates an input channel mapping.
|
||||
|
||||
When the getNextAudioBlock() method is called, the data in channel sourceChannelIndex of the incoming
|
||||
data will be sent to destChannelIndex of our input source.
|
||||
|
||||
@param destChannelIndex the index of an input channel in our input audio source (i.e. the
|
||||
source specified when this object was created).
|
||||
@param sourceChannelIndex the index of the input channel in the incoming audio data buffer
|
||||
during our getNextAudioBlock() callback
|
||||
*/
|
||||
void setInputChannelMapping (int destChannelIndex,
|
||||
int sourceChannelIndex);
|
||||
|
||||
/** Creates an output channel mapping.
|
||||
|
||||
When the getNextAudioBlock() method is called, the data returned in channel sourceChannelIndex by
|
||||
our input audio source will be copied to channel destChannelIndex of the final buffer.
|
||||
|
||||
@param sourceChannelIndex the index of an output channel coming from our input audio source
|
||||
(i.e. the source specified when this object was created).
|
||||
@param destChannelIndex the index of the output channel in the incoming audio data buffer
|
||||
during our getNextAudioBlock() callback
|
||||
*/
|
||||
void setOutputChannelMapping (int sourceChannelIndex,
|
||||
int destChannelIndex);
|
||||
|
||||
/** Returns the channel from our input that will be sent to channel inputChannelIndex of
|
||||
our input audio source.
|
||||
*/
|
||||
int getRemappedInputChannel (int inputChannelIndex) const;
|
||||
|
||||
/** Returns the output channel to which channel outputChannelIndex of our input audio
|
||||
source will be sent to.
|
||||
*/
|
||||
int getRemappedOutputChannel (int outputChannelIndex) const;
|
||||
|
||||
|
||||
//==============================================================================
|
||||
/** Returns an XML object to encapsulate the state of the mappings.
|
||||
@see restoreFromXml
|
||||
*/
|
||||
XmlElement* createXml() const;
|
||||
|
||||
/** Restores the mappings from an XML object created by createXML().
|
||||
@see createXml
|
||||
*/
|
||||
void restoreFromXml (const XmlElement&);
|
||||
|
||||
//==============================================================================
|
||||
void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
|
||||
void releaseResources() override;
|
||||
void getNextAudioBlock (const AudioSourceChannelInfo&) override;
|
||||
|
||||
|
||||
private:
|
||||
//==============================================================================
|
||||
OptionalScopedPointer<AudioSource> source;
|
||||
Array<int> remappedInputs, remappedOutputs;
|
||||
int requiredNumberOfChannels;
|
||||
|
||||
AudioSampleBuffer buffer;
|
||||
AudioSourceChannelInfo remappedInfo;
|
||||
CriticalSection lock;
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ChannelRemappingAudioSource)
|
||||
};
|
||||
|
||||
|
||||
#endif // JUCE_CHANNELREMAPPINGAUDIOSOURCE_H_INCLUDED
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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.
|
||||
|
||||
==============================================================================
|
||||
*/
|
||||
|
||||
IIRFilterAudioSource::IIRFilterAudioSource (AudioSource* const inputSource,
|
||||
const bool deleteInputWhenDeleted)
|
||||
: input (inputSource, deleteInputWhenDeleted)
|
||||
{
|
||||
jassert (inputSource != nullptr);
|
||||
|
||||
for (int i = 2; --i >= 0;)
|
||||
iirFilters.add (new IIRFilter());
|
||||
}
|
||||
|
||||
IIRFilterAudioSource::~IIRFilterAudioSource() {}
|
||||
|
||||
//==============================================================================
|
||||
void IIRFilterAudioSource::setCoefficients (const IIRCoefficients& newCoefficients)
|
||||
{
|
||||
for (int i = iirFilters.size(); --i >= 0;)
|
||||
iirFilters.getUnchecked(i)->setCoefficients (newCoefficients);
|
||||
}
|
||||
|
||||
void IIRFilterAudioSource::makeInactive()
|
||||
{
|
||||
for (int i = iirFilters.size(); --i >= 0;)
|
||||
iirFilters.getUnchecked(i)->makeInactive();
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
void IIRFilterAudioSource::prepareToPlay (int samplesPerBlockExpected, double sampleRate)
|
||||
{
|
||||
input->prepareToPlay (samplesPerBlockExpected, sampleRate);
|
||||
|
||||
for (int i = iirFilters.size(); --i >= 0;)
|
||||
iirFilters.getUnchecked(i)->reset();
|
||||
}
|
||||
|
||||
void IIRFilterAudioSource::releaseResources()
|
||||
{
|
||||
input->releaseResources();
|
||||
}
|
||||
|
||||
void IIRFilterAudioSource::getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill)
|
||||
{
|
||||
input->getNextAudioBlock (bufferToFill);
|
||||
|
||||
const int numChannels = bufferToFill.buffer->getNumChannels();
|
||||
|
||||
while (numChannels > iirFilters.size())
|
||||
iirFilters.add (new IIRFilter (*iirFilters.getUnchecked (0)));
|
||||
|
||||
for (int i = 0; i < numChannels; ++i)
|
||||
iirFilters.getUnchecked(i)
|
||||
->processSamples (bufferToFill.buffer->getWritePointer (i, bufferToFill.startSample),
|
||||
bufferToFill.numSamples);
|
||||
}
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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_IIRFILTERAUDIOSOURCE_H_INCLUDED
|
||||
#define JUCE_IIRFILTERAUDIOSOURCE_H_INCLUDED
|
||||
|
||||
|
||||
//==============================================================================
|
||||
/**
|
||||
An AudioSource that performs an IIR filter on another source.
|
||||
*/
|
||||
class JUCE_API IIRFilterAudioSource : public AudioSource
|
||||
{
|
||||
public:
|
||||
//==============================================================================
|
||||
/** Creates a IIRFilterAudioSource for a given input source.
|
||||
|
||||
@param inputSource the input source to read from - this must not be null
|
||||
@param deleteInputWhenDeleted if true, the input source will be deleted when
|
||||
this object is deleted
|
||||
*/
|
||||
IIRFilterAudioSource (AudioSource* inputSource,
|
||||
bool deleteInputWhenDeleted);
|
||||
|
||||
/** Destructor. */
|
||||
~IIRFilterAudioSource();
|
||||
|
||||
//==============================================================================
|
||||
/** Changes the filter to use the same parameters as the one being passed in. */
|
||||
void setCoefficients (const IIRCoefficients& newCoefficients);
|
||||
|
||||
/** Calls IIRFilter::makeInactive() on all the filters being used internally. */
|
||||
void makeInactive();
|
||||
|
||||
//==============================================================================
|
||||
void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
|
||||
void releaseResources() override;
|
||||
void getNextAudioBlock (const AudioSourceChannelInfo&) override;
|
||||
|
||||
private:
|
||||
//==============================================================================
|
||||
OptionalScopedPointer<AudioSource> input;
|
||||
OwnedArray<IIRFilter> iirFilters;
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (IIRFilterAudioSource)
|
||||
};
|
||||
|
||||
|
||||
#endif // JUCE_IIRFILTERAUDIOSOURCE_H_INCLUDED
|
||||
|
|
@ -0,0 +1,155 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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.
|
||||
|
||||
==============================================================================
|
||||
*/
|
||||
|
||||
MixerAudioSource::MixerAudioSource()
|
||||
: currentSampleRate (0.0), bufferSizeExpected (0)
|
||||
{
|
||||
}
|
||||
|
||||
MixerAudioSource::~MixerAudioSource()
|
||||
{
|
||||
removeAllInputs();
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
void MixerAudioSource::addInputSource (AudioSource* input, const bool deleteWhenRemoved)
|
||||
{
|
||||
if (input != nullptr && ! inputs.contains (input))
|
||||
{
|
||||
double localRate;
|
||||
int localBufferSize;
|
||||
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
localRate = currentSampleRate;
|
||||
localBufferSize = bufferSizeExpected;
|
||||
}
|
||||
|
||||
if (localRate > 0.0)
|
||||
input->prepareToPlay (localBufferSize, localRate);
|
||||
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
inputsToDelete.setBit (inputs.size(), deleteWhenRemoved);
|
||||
inputs.add (input);
|
||||
}
|
||||
}
|
||||
|
||||
void MixerAudioSource::removeInputSource (AudioSource* const input)
|
||||
{
|
||||
if (input != nullptr)
|
||||
{
|
||||
ScopedPointer<AudioSource> toDelete;
|
||||
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
const int index = inputs.indexOf (input);
|
||||
|
||||
if (index < 0)
|
||||
return;
|
||||
|
||||
if (inputsToDelete [index])
|
||||
toDelete = input;
|
||||
|
||||
inputsToDelete.shiftBits (-1, index);
|
||||
inputs.remove (index);
|
||||
}
|
||||
|
||||
input->releaseResources();
|
||||
}
|
||||
}
|
||||
|
||||
void MixerAudioSource::removeAllInputs()
|
||||
{
|
||||
OwnedArray<AudioSource> toDelete;
|
||||
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
for (int i = inputs.size(); --i >= 0;)
|
||||
if (inputsToDelete[i])
|
||||
toDelete.add (inputs.getUnchecked(i));
|
||||
|
||||
inputs.clear();
|
||||
}
|
||||
|
||||
for (int i = toDelete.size(); --i >= 0;)
|
||||
toDelete.getUnchecked(i)->releaseResources();
|
||||
}
|
||||
|
||||
void MixerAudioSource::prepareToPlay (int samplesPerBlockExpected, double sampleRate)
|
||||
{
|
||||
tempBuffer.setSize (2, samplesPerBlockExpected);
|
||||
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
currentSampleRate = sampleRate;
|
||||
bufferSizeExpected = samplesPerBlockExpected;
|
||||
|
||||
for (int i = inputs.size(); --i >= 0;)
|
||||
inputs.getUnchecked(i)->prepareToPlay (samplesPerBlockExpected, sampleRate);
|
||||
}
|
||||
|
||||
void MixerAudioSource::releaseResources()
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
for (int i = inputs.size(); --i >= 0;)
|
||||
inputs.getUnchecked(i)->releaseResources();
|
||||
|
||||
tempBuffer.setSize (2, 0);
|
||||
|
||||
currentSampleRate = 0;
|
||||
bufferSizeExpected = 0;
|
||||
}
|
||||
|
||||
void MixerAudioSource::getNextAudioBlock (const AudioSourceChannelInfo& info)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
if (inputs.size() > 0)
|
||||
{
|
||||
inputs.getUnchecked(0)->getNextAudioBlock (info);
|
||||
|
||||
if (inputs.size() > 1)
|
||||
{
|
||||
tempBuffer.setSize (jmax (1, info.buffer->getNumChannels()),
|
||||
info.buffer->getNumSamples());
|
||||
|
||||
AudioSourceChannelInfo info2 (&tempBuffer, 0, info.numSamples);
|
||||
|
||||
for (int i = 1; i < inputs.size(); ++i)
|
||||
{
|
||||
inputs.getUnchecked(i)->getNextAudioBlock (info2);
|
||||
|
||||
for (int chan = 0; chan < info.buffer->getNumChannels(); ++chan)
|
||||
info.buffer->addFrom (chan, info.startSample, tempBuffer, chan, 0, info.numSamples);
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
info.clearActiveBufferRegion();
|
||||
}
|
||||
}
|
||||
|
|
@ -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
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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_POSITIONABLEAUDIOSOURCE_H_INCLUDED
|
||||
#define JUCE_POSITIONABLEAUDIOSOURCE_H_INCLUDED
|
||||
|
||||
|
||||
//==============================================================================
|
||||
/**
|
||||
A type of AudioSource which can be repositioned.
|
||||
|
||||
The basic AudioSource just streams continuously with no idea of a current
|
||||
time or length, so the PositionableAudioSource is used for a finite stream
|
||||
that has a current read position.
|
||||
|
||||
@see AudioSource, AudioTransportSource
|
||||
*/
|
||||
class JUCE_API PositionableAudioSource : public AudioSource
|
||||
{
|
||||
protected:
|
||||
//==============================================================================
|
||||
/** Creates the PositionableAudioSource. */
|
||||
PositionableAudioSource() noexcept {}
|
||||
|
||||
public:
|
||||
/** Destructor */
|
||||
~PositionableAudioSource() {}
|
||||
|
||||
//==============================================================================
|
||||
/** Tells the stream to move to a new position.
|
||||
|
||||
Calling this indicates that the next call to AudioSource::getNextAudioBlock()
|
||||
should return samples from this position.
|
||||
|
||||
Note that this may be called on a different thread to getNextAudioBlock(),
|
||||
so the subclass should make sure it's synchronised.
|
||||
*/
|
||||
virtual void setNextReadPosition (int64 newPosition) = 0;
|
||||
|
||||
/** Returns the position from which the next block will be returned.
|
||||
|
||||
@see setNextReadPosition
|
||||
*/
|
||||
virtual int64 getNextReadPosition() const = 0;
|
||||
|
||||
/** Returns the total length of the stream (in samples). */
|
||||
virtual int64 getTotalLength() const = 0;
|
||||
|
||||
/** Returns true if this source is actually playing in a loop. */
|
||||
virtual bool isLooping() const = 0;
|
||||
|
||||
/** Tells the source whether you'd like it to play in a loop. */
|
||||
virtual void setLooping (bool shouldLoop) { (void) shouldLoop; }
|
||||
};
|
||||
|
||||
|
||||
#endif // JUCE_POSITIONABLEAUDIOSOURCE_H_INCLUDED
|
||||
|
|
@ -0,0 +1,261 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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.
|
||||
|
||||
==============================================================================
|
||||
*/
|
||||
|
||||
ResamplingAudioSource::ResamplingAudioSource (AudioSource* const inputSource,
|
||||
const bool deleteInputWhenDeleted,
|
||||
const int numChannels_)
|
||||
: input (inputSource, deleteInputWhenDeleted),
|
||||
ratio (1.0),
|
||||
lastRatio (1.0),
|
||||
bufferPos (0),
|
||||
sampsInBuffer (0),
|
||||
subSampleOffset (0),
|
||||
numChannels (numChannels_)
|
||||
{
|
||||
jassert (input != nullptr);
|
||||
zeromem (coefficients, sizeof (coefficients));
|
||||
}
|
||||
|
||||
ResamplingAudioSource::~ResamplingAudioSource() {}
|
||||
|
||||
void ResamplingAudioSource::setResamplingRatio (const double samplesInPerOutputSample)
|
||||
{
|
||||
jassert (samplesInPerOutputSample > 0);
|
||||
|
||||
const SpinLock::ScopedLockType sl (ratioLock);
|
||||
ratio = jmax (0.0, samplesInPerOutputSample);
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::prepareToPlay (int samplesPerBlockExpected, double sampleRate)
|
||||
{
|
||||
const SpinLock::ScopedLockType sl (ratioLock);
|
||||
|
||||
input->prepareToPlay (samplesPerBlockExpected, sampleRate);
|
||||
|
||||
buffer.setSize (numChannels, roundToInt (samplesPerBlockExpected * ratio) + 32);
|
||||
|
||||
filterStates.calloc ((size_t) numChannels);
|
||||
srcBuffers.calloc ((size_t) numChannels);
|
||||
destBuffers.calloc ((size_t) numChannels);
|
||||
createLowPass (ratio);
|
||||
|
||||
flushBuffers();
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::flushBuffers()
|
||||
{
|
||||
buffer.clear();
|
||||
bufferPos = 0;
|
||||
sampsInBuffer = 0;
|
||||
subSampleOffset = 0.0;
|
||||
resetFilters();
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::releaseResources()
|
||||
{
|
||||
input->releaseResources();
|
||||
buffer.setSize (numChannels, 0);
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::getNextAudioBlock (const AudioSourceChannelInfo& info)
|
||||
{
|
||||
double localRatio;
|
||||
|
||||
{
|
||||
const SpinLock::ScopedLockType sl (ratioLock);
|
||||
localRatio = ratio;
|
||||
}
|
||||
|
||||
if (lastRatio != localRatio)
|
||||
{
|
||||
createLowPass (localRatio);
|
||||
lastRatio = localRatio;
|
||||
}
|
||||
|
||||
const int sampsNeeded = roundToInt (info.numSamples * localRatio) + 2;
|
||||
|
||||
int bufferSize = buffer.getNumSamples();
|
||||
|
||||
if (bufferSize < sampsNeeded + 8)
|
||||
{
|
||||
bufferPos %= bufferSize;
|
||||
bufferSize = sampsNeeded + 32;
|
||||
buffer.setSize (buffer.getNumChannels(), bufferSize, true, true);
|
||||
}
|
||||
|
||||
bufferPos %= bufferSize;
|
||||
|
||||
int endOfBufferPos = bufferPos + sampsInBuffer;
|
||||
const int channelsToProcess = jmin (numChannels, info.buffer->getNumChannels());
|
||||
|
||||
while (sampsNeeded > sampsInBuffer)
|
||||
{
|
||||
endOfBufferPos %= bufferSize;
|
||||
|
||||
int numToDo = jmin (sampsNeeded - sampsInBuffer,
|
||||
bufferSize - endOfBufferPos);
|
||||
|
||||
AudioSourceChannelInfo readInfo (&buffer, endOfBufferPos, numToDo);
|
||||
input->getNextAudioBlock (readInfo);
|
||||
|
||||
if (localRatio > 1.0001)
|
||||
{
|
||||
// for down-sampling, pre-apply the filter..
|
||||
|
||||
for (int i = channelsToProcess; --i >= 0;)
|
||||
applyFilter (buffer.getWritePointer (i, endOfBufferPos), numToDo, filterStates[i]);
|
||||
}
|
||||
|
||||
sampsInBuffer += numToDo;
|
||||
endOfBufferPos += numToDo;
|
||||
}
|
||||
|
||||
for (int channel = 0; channel < channelsToProcess; ++channel)
|
||||
{
|
||||
destBuffers[channel] = info.buffer->getWritePointer (channel, info.startSample);
|
||||
srcBuffers[channel] = buffer.getReadPointer (channel);
|
||||
}
|
||||
|
||||
int nextPos = (bufferPos + 1) % bufferSize;
|
||||
for (int m = info.numSamples; --m >= 0;)
|
||||
{
|
||||
const float alpha = (float) subSampleOffset;
|
||||
|
||||
for (int channel = 0; channel < channelsToProcess; ++channel)
|
||||
*destBuffers[channel]++ = srcBuffers[channel][bufferPos]
|
||||
+ alpha * (srcBuffers[channel][nextPos] - srcBuffers[channel][bufferPos]);
|
||||
|
||||
subSampleOffset += localRatio;
|
||||
|
||||
jassert (sampsInBuffer > 0);
|
||||
|
||||
while (subSampleOffset >= 1.0)
|
||||
{
|
||||
if (++bufferPos >= bufferSize)
|
||||
bufferPos = 0;
|
||||
|
||||
--sampsInBuffer;
|
||||
|
||||
nextPos = (bufferPos + 1) % bufferSize;
|
||||
subSampleOffset -= 1.0;
|
||||
}
|
||||
}
|
||||
|
||||
if (localRatio < 0.9999)
|
||||
{
|
||||
// for up-sampling, apply the filter after transposing..
|
||||
for (int i = channelsToProcess; --i >= 0;)
|
||||
applyFilter (info.buffer->getWritePointer (i, info.startSample), info.numSamples, filterStates[i]);
|
||||
}
|
||||
else if (localRatio <= 1.0001 && info.numSamples > 0)
|
||||
{
|
||||
// if the filter's not currently being applied, keep it stoked with the last couple of samples to avoid discontinuities
|
||||
for (int i = channelsToProcess; --i >= 0;)
|
||||
{
|
||||
const float* const endOfBuffer = info.buffer->getReadPointer (i, info.startSample + info.numSamples - 1);
|
||||
FilterState& fs = filterStates[i];
|
||||
|
||||
if (info.numSamples > 1)
|
||||
{
|
||||
fs.y2 = fs.x2 = *(endOfBuffer - 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
fs.y2 = fs.y1;
|
||||
fs.x2 = fs.x1;
|
||||
}
|
||||
|
||||
fs.y1 = fs.x1 = *endOfBuffer;
|
||||
}
|
||||
}
|
||||
|
||||
jassert (sampsInBuffer >= 0);
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::createLowPass (const double frequencyRatio)
|
||||
{
|
||||
const double proportionalRate = (frequencyRatio > 1.0) ? 0.5 / frequencyRatio
|
||||
: 0.5 * frequencyRatio;
|
||||
|
||||
const double n = 1.0 / std::tan (double_Pi * jmax (0.001, proportionalRate));
|
||||
const double nSquared = n * n;
|
||||
const double c1 = 1.0 / (1.0 + std::sqrt (2.0) * n + nSquared);
|
||||
|
||||
setFilterCoefficients (c1,
|
||||
c1 * 2.0f,
|
||||
c1,
|
||||
1.0,
|
||||
c1 * 2.0 * (1.0 - nSquared),
|
||||
c1 * (1.0 - std::sqrt (2.0) * n + nSquared));
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::setFilterCoefficients (double c1, double c2, double c3, double c4, double c5, double c6)
|
||||
{
|
||||
const double a = 1.0 / c4;
|
||||
|
||||
c1 *= a;
|
||||
c2 *= a;
|
||||
c3 *= a;
|
||||
c5 *= a;
|
||||
c6 *= a;
|
||||
|
||||
coefficients[0] = c1;
|
||||
coefficients[1] = c2;
|
||||
coefficients[2] = c3;
|
||||
coefficients[3] = c4;
|
||||
coefficients[4] = c5;
|
||||
coefficients[5] = c6;
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::resetFilters()
|
||||
{
|
||||
if (filterStates != nullptr)
|
||||
filterStates.clear ((size_t) numChannels);
|
||||
}
|
||||
|
||||
void ResamplingAudioSource::applyFilter (float* samples, int num, FilterState& fs)
|
||||
{
|
||||
while (--num >= 0)
|
||||
{
|
||||
const double in = *samples;
|
||||
|
||||
double out = coefficients[0] * in
|
||||
+ coefficients[1] * fs.x1
|
||||
+ coefficients[2] * fs.x2
|
||||
- coefficients[4] * fs.y1
|
||||
- coefficients[5] * fs.y2;
|
||||
|
||||
#if JUCE_INTEL
|
||||
if (! (out < -1.0e-8 || out > 1.0e-8))
|
||||
out = 0;
|
||||
#endif
|
||||
|
||||
fs.x2 = fs.x1;
|
||||
fs.x1 = in;
|
||||
fs.y2 = fs.y1;
|
||||
fs.y1 = out;
|
||||
|
||||
*samples++ = (float) out;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,107 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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_RESAMPLINGAUDIOSOURCE_H_INCLUDED
|
||||
#define JUCE_RESAMPLINGAUDIOSOURCE_H_INCLUDED
|
||||
|
||||
|
||||
//==============================================================================
|
||||
/**
|
||||
A type of AudioSource that takes an input source and changes its sample rate.
|
||||
|
||||
@see AudioSource
|
||||
*/
|
||||
class JUCE_API ResamplingAudioSource : public AudioSource
|
||||
{
|
||||
public:
|
||||
//==============================================================================
|
||||
/** Creates a ResamplingAudioSource for a given input source.
|
||||
|
||||
@param inputSource the input source to read from
|
||||
@param deleteInputWhenDeleted if true, the input source will be deleted when
|
||||
this object is deleted
|
||||
@param numChannels the number of channels to process
|
||||
*/
|
||||
ResamplingAudioSource (AudioSource* inputSource,
|
||||
bool deleteInputWhenDeleted,
|
||||
int numChannels = 2);
|
||||
|
||||
/** Destructor. */
|
||||
~ResamplingAudioSource();
|
||||
|
||||
/** Changes the resampling ratio.
|
||||
|
||||
(This value can be changed at any time, even while the source is running).
|
||||
|
||||
@param samplesInPerOutputSample if set to 1.0, the input is passed through; higher
|
||||
values will speed it up; lower values will slow it
|
||||
down. The ratio must be greater than 0
|
||||
*/
|
||||
void setResamplingRatio (double samplesInPerOutputSample);
|
||||
|
||||
/** Returns the current resampling ratio.
|
||||
|
||||
This is the value that was set by setResamplingRatio().
|
||||
*/
|
||||
double getResamplingRatio() const noexcept { return ratio; }
|
||||
|
||||
/** Clears any buffers and filters that the resampler is using. */
|
||||
void flushBuffers();
|
||||
|
||||
//==============================================================================
|
||||
void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
|
||||
void releaseResources() override;
|
||||
void getNextAudioBlock (const AudioSourceChannelInfo&) override;
|
||||
|
||||
private:
|
||||
//==============================================================================
|
||||
OptionalScopedPointer<AudioSource> input;
|
||||
double ratio, lastRatio;
|
||||
AudioSampleBuffer buffer;
|
||||
int bufferPos, sampsInBuffer;
|
||||
double subSampleOffset;
|
||||
double coefficients[6];
|
||||
SpinLock ratioLock;
|
||||
const int numChannels;
|
||||
HeapBlock<float*> destBuffers;
|
||||
HeapBlock<const float*> srcBuffers;
|
||||
|
||||
void setFilterCoefficients (double c1, double c2, double c3, double c4, double c5, double c6);
|
||||
void createLowPass (double proportionalRate);
|
||||
|
||||
struct FilterState
|
||||
{
|
||||
double x1, x2, y1, y2;
|
||||
};
|
||||
|
||||
HeapBlock<FilterState> filterStates;
|
||||
void resetFilters();
|
||||
|
||||
void applyFilter (float* samples, int num, FilterState& fs);
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ResamplingAudioSource)
|
||||
};
|
||||
|
||||
|
||||
#endif // JUCE_RESAMPLINGAUDIOSOURCE_H_INCLUDED
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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.
|
||||
|
||||
==============================================================================
|
||||
*/
|
||||
|
||||
ReverbAudioSource::ReverbAudioSource (AudioSource* const inputSource, const bool deleteInputWhenDeleted)
|
||||
: input (inputSource, deleteInputWhenDeleted),
|
||||
bypass (false)
|
||||
{
|
||||
jassert (inputSource != nullptr);
|
||||
}
|
||||
|
||||
ReverbAudioSource::~ReverbAudioSource() {}
|
||||
|
||||
void ReverbAudioSource::prepareToPlay (int samplesPerBlockExpected, double sampleRate)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
input->prepareToPlay (samplesPerBlockExpected, sampleRate);
|
||||
reverb.setSampleRate (sampleRate);
|
||||
}
|
||||
|
||||
void ReverbAudioSource::releaseResources() {}
|
||||
|
||||
void ReverbAudioSource::getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
input->getNextAudioBlock (bufferToFill);
|
||||
|
||||
if (! bypass)
|
||||
{
|
||||
float* const firstChannel = bufferToFill.buffer->getWritePointer (0, bufferToFill.startSample);
|
||||
|
||||
if (bufferToFill.buffer->getNumChannels() > 1)
|
||||
{
|
||||
reverb.processStereo (firstChannel,
|
||||
bufferToFill.buffer->getWritePointer (1, bufferToFill.startSample),
|
||||
bufferToFill.numSamples);
|
||||
}
|
||||
else
|
||||
{
|
||||
reverb.processMono (firstChannel, bufferToFill.numSamples);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void ReverbAudioSource::setParameters (const Reverb::Parameters& newParams)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
reverb.setParameters (newParams);
|
||||
}
|
||||
|
||||
void ReverbAudioSource::setBypassed (bool b) noexcept
|
||||
{
|
||||
if (bypass != b)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
bypass = b;
|
||||
reverb.reset();
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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_REVERBAUDIOSOURCE_H_INCLUDED
|
||||
#define JUCE_REVERBAUDIOSOURCE_H_INCLUDED
|
||||
|
||||
|
||||
//==============================================================================
|
||||
/**
|
||||
An AudioSource that uses the Reverb class to apply a reverb to another AudioSource.
|
||||
|
||||
@see Reverb
|
||||
*/
|
||||
class JUCE_API ReverbAudioSource : public AudioSource
|
||||
{
|
||||
public:
|
||||
/** Creates a ReverbAudioSource to process a given input source.
|
||||
|
||||
@param inputSource the input source to read from - this must not be null
|
||||
@param deleteInputWhenDeleted if true, the input source will be deleted when
|
||||
this object is deleted
|
||||
*/
|
||||
ReverbAudioSource (AudioSource* inputSource,
|
||||
bool deleteInputWhenDeleted);
|
||||
|
||||
/** Destructor. */
|
||||
~ReverbAudioSource();
|
||||
|
||||
//==============================================================================
|
||||
/** Returns the parameters from the reverb. */
|
||||
const Reverb::Parameters& getParameters() const noexcept { return reverb.getParameters(); }
|
||||
|
||||
/** Changes the reverb's parameters. */
|
||||
void setParameters (const Reverb::Parameters& newParams);
|
||||
|
||||
void setBypassed (bool isBypassed) noexcept;
|
||||
bool isBypassed() const noexcept { return bypass; }
|
||||
|
||||
//==============================================================================
|
||||
void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
|
||||
void releaseResources() override;
|
||||
void getNextAudioBlock (const AudioSourceChannelInfo&) override;
|
||||
|
||||
private:
|
||||
//==============================================================================
|
||||
CriticalSection lock;
|
||||
OptionalScopedPointer<AudioSource> input;
|
||||
Reverb reverb;
|
||||
volatile bool bypass;
|
||||
|
||||
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ReverbAudioSource)
|
||||
};
|
||||
|
||||
|
||||
#endif // JUCE_REVERBAUDIOSOURCE_H_INCLUDED
|
||||
|
|
@ -0,0 +1,75 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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.
|
||||
|
||||
==============================================================================
|
||||
*/
|
||||
|
||||
ToneGeneratorAudioSource::ToneGeneratorAudioSource()
|
||||
: frequency (1000.0),
|
||||
sampleRate (44100.0),
|
||||
currentPhase (0.0),
|
||||
phasePerSample (0.0),
|
||||
amplitude (0.5f)
|
||||
{
|
||||
}
|
||||
|
||||
ToneGeneratorAudioSource::~ToneGeneratorAudioSource()
|
||||
{
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
void ToneGeneratorAudioSource::setAmplitude (const float newAmplitude)
|
||||
{
|
||||
amplitude = newAmplitude;
|
||||
}
|
||||
|
||||
void ToneGeneratorAudioSource::setFrequency (const double newFrequencyHz)
|
||||
{
|
||||
frequency = newFrequencyHz;
|
||||
phasePerSample = 0.0;
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
void ToneGeneratorAudioSource::prepareToPlay (int /*samplesPerBlockExpected*/, double rate)
|
||||
{
|
||||
currentPhase = 0.0;
|
||||
phasePerSample = 0.0;
|
||||
sampleRate = rate;
|
||||
}
|
||||
|
||||
void ToneGeneratorAudioSource::releaseResources()
|
||||
{
|
||||
}
|
||||
|
||||
void ToneGeneratorAudioSource::getNextAudioBlock (const AudioSourceChannelInfo& info)
|
||||
{
|
||||
if (phasePerSample == 0.0)
|
||||
phasePerSample = double_Pi * 2.0 / (sampleRate / frequency);
|
||||
|
||||
for (int i = 0; i < info.numSamples; ++i)
|
||||
{
|
||||
const float sample = amplitude * (float) std::sin (currentPhase);
|
||||
currentPhase += phasePerSample;
|
||||
|
||||
for (int j = info.buffer->getNumChannels(); --j >= 0;)
|
||||
info.buffer->setSample (j, info.startSample + i, sample);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,73 @@
|
|||
/*
|
||||
==============================================================================
|
||||
|
||||
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
|
||||
Loading…
Add table
Add a link
Reference in a new issue