TTAudioGraphGenerator.cpp

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/** @file
 *
 * @ingroup audioGraphLibrary
 *
 * @brief Generates the AudioGraph structure
 *
 * @details
 *
 * @authors Timothy Place, Trond Lossius
 *
 * @copyright Copyright © 2010, Timothy Place @n
 * This code is licensed under the terms of the "New BSD License" @n
 * http://creativecommons.org/licenses/BSD/
 */


#include "TTAudioGraphGenerator.h"

#define thisTTClass         TTAudioGraphGenerator
#define thisTTClassName     "audio.generator"
#define thisTTClassTags     "audioGraphLibrary, audio, graph, generator"

TT_AUDIO_CONSTRUCTOR,
    mBuffer(NULL)
{
    // arguments is the number of inlets (not the number of channels)
    TTObjectBaseInstantiate(kTTSym_audiosignal, &mBuffer, arguments);

    addAttributeWithSetter(VectorSize, kTypeUInt16);
    addUpdates(MaxNumChannels);
    addUpdates(SampleRate);

    setAttributeValue(kTTSym_vectorSize, 64);
    setAttributeValue(TT("maxNumChannels"), 1);
    setProcessMethod(processAudio);
}


TTAudioGraphGenerator::~TTAudioGraphGenerator()
{
    TTObjectBaseRelease(&mBuffer);
}


TTErr TTAudioGraphGenerator::setVectorSize(const TTValue& newVectorSize)
{
    mVectorSize = newVectorSize;
    return mBuffer->setAttributeValue(TT("vectorSize"), mVectorSize);
}


TTErr TTAudioGraphGenerator::updateMaxNumChannels(const TTValue& oldMaxNumChannels, TTValue&)
{
    mBuffer->setAttributeValue(TT("maxNumChannels"), mMaxNumChannels);
    mBuffer->setAttributeValue(TT("numChannels"), mMaxNumChannels);
    return mBuffer->sendMessage(TT("alloc"));
}


TTErr TTAudioGraphGenerator::updateSampleRate(const TTValue& oldSampleRate, TTValue&)
{
    return kTTErrNone;
}


TTErr TTAudioGraphGenerator::processAudio(TTAudioSignalArrayPtr inputs, TTAudioSignalArrayPtr outputs)
{
    TTAudioSignal&  out = outputs->getSignal(0);
    return TTAudioSignal::copy(*mBuffer, out);
}