C++ WavAudioFormat类代码示例

    //==============================================================================
    void startRecording (const File& file)
    {
        stop();

        if (sampleRate > 0)
        {
            // Create an OutputStream to write to our destination file...
            file.deleteFile();
            ScopedPointer<FileOutputStream> fileStream (file.createOutputStream());

            if (fileStream != 0)
            {
                // Now create a WAV writer object that writes to our output stream...
                WavAudioFormat wavFormat;
                AudioFormatWriter* writer = wavFormat.createWriterFor (fileStream, sampleRate, 1, 16, StringPairArray(), 0);

                if (writer != 0)
                {
                    fileStream.release(); // (passes responsibility for deleting the stream to the writer object that is now using it)

                    // Now we'll create one of these helper objects which will act as a FIFO buffer, and will
                    // write the data to disk on our background thread.
                    threadedWriter = new AudioFormatWriter::ThreadedWriter (writer, backgroundThread, 32768);

                    // And now, swap over our active writer pointer so that the audio callback will start using it..
                    const ScopedLock sl (writerLock);
                    activeWriter = threadedWriter;
                }
            }
        }
    }

    void setUsingSampledSound()
    {
        synth.clearSounds();

        WavAudioFormat wavFormat;

        AudioFormatReader* audioReader
            = wavFormat.createReaderFor (new MemoryInputStream (BinaryData::cello_wav,
                                                                BinaryData::cello_wavSize,
                                                                false),
                                         true);

        BitArray allNotes;
        allNotes.setRange (0, 128, true);

        synth.addSound (new SamplerSound (T("demo sound"),
                                          *audioReader,
                                          allNotes,
                                          74,   // root midi note
                                          0.1,  // attack time
                                          0.1,  // release time
                                          10.0  // maximum sample length
                                          ));

        delete audioReader;
    }

/*
	Start recording to a specified file
	*/
void Audio::AudioRecorder::startRecording (const File& file)
{
    // make sure recorder is stopped first
    stop();
    if (sampleRate > 0)
    {
        // delete file contents first
        file.deleteFile();
        // create file stream for file
        ScopedPointer<FileOutputStream> fileStream (file.createOutputStream());
        
        if (fileStream != nullptr)
        {
            // create a wav format writer
            WavAudioFormat wavFormat;
            AudioFormatWriter* writer = wavFormat.createWriterFor (fileStream, sampleRate, 1, 16, StringPairArray(), 0);
            
            if (writer != nullptr)
            {
                fileStream.release();
                
                // create a thread for the writer.
                threadedWriter = new AudioFormatWriter::ThreadedWriter (writer, backgroundThread, 32768);
                
                // set the next sample number to start
                nextSampleNum = 0;
                
                // scoped lock for writer
                const ScopedLock sl (writerLock);
                activeWriter = threadedWriter;
            }
        }
    }
}

SampleItem::SampleItem(const String &filename)
{
	this->filename = filename;

	File file(filename);
	if (file.exists())
	{
		shortname = file.getFileNameWithoutExtension();
		FileInputStream *stream = new FileInputStream(file);
		WavAudioFormat format;
		AudioFormatReader *reader = format.createReaderFor(stream, false);
		if (reader)
		{
			formatName = reader->getFormatName();
			sampleRate = (int)reader->sampleRate;
			size = (int)reader->lengthInSamples;
			bits = reader->bitsPerSample;
			delete reader;
		}
		else
		{
			sampleRate = 0;
			size = 0;
			bits = 0;
		}
	}

	playing = false;
}

void BeatboxVoxAudioProcessor::initialiseSynth()
{
	/** NOTE: - Quick and dirty sample drum synth for prototype
	 *  In future versions will ideally allow user to select sample to use and
	 *  also manage sample rate changes effect on loaded samples. 
	 */
	WavAudioFormat wavFormat;
	BigInteger kickNoteRange;
	BigInteger snareNoteRange;
	BigInteger hihatNoteRange;
	BigInteger osdTestSoundNoteRange;

	drumSynth.clearSounds();
	osdTestSynth.clearSounds();

	std::unique_ptr<AudioFormatReader> readerKickDrum(wavFormat.createReaderFor(new MemoryInputStream(BinaryData::bassdrum_wav,
	                                                                                                  BinaryData::bassdrum_wavSize,
	                                                                                                  false),
	                                                                            true));

	std::unique_ptr<AudioFormatReader> readerSnareDrum(wavFormat.createReaderFor(new MemoryInputStream(BinaryData::snaredrum_wav,
	                                                                                                   BinaryData::snaredrum_wavSize,
	                                                                                                   false),
	                                                                             true));

	std::unique_ptr<AudioFormatReader> readerHiHat(wavFormat.createReaderFor(new MemoryInputStream(BinaryData::hihat_wav,
	                                                                                                   BinaryData::hihat_wavSize,
	                                                                                                   false),
	                                                                             true));
	
	std::unique_ptr<AudioFormatReader> readerOSDTestSound(wavFormat.createReaderFor(new MemoryInputStream(BinaryData::osdTestOne_wav,
	                                                                                                      BinaryData::osdTestOne_wavSize,
	                                                                                                      false),
	                                                                                true));

	kickNoteRange.setBit(kickNoteNumber);
	snareNoteRange.setBit(snareNoteNumber);
	hihatNoteRange.setBit(hihatNoteNumber);
	osdTestSoundNoteRange.setBit(osdTestSoundNoteNumber);


	drumSynth.addSound(new SamplerSound("Kick Sound", *readerKickDrum, kickNoteRange, kickNoteNumber, 0.0, 0.0, 5.0));
	drumSynth.addSound(new SamplerSound("Snare Sound", *readerSnareDrum, snareNoteRange, snareNoteNumber, 0.0, 0.0, 5.0));
	drumSynth.addSound(new SamplerSound("HiHat Sound", *readerHiHat, hihatNoteRange, hihatNoteNumber, 0.0, 0.0, 5.0));

	drumSynth.addVoice(new SamplerVoice());

	drumSynth.addSound(new NoiseSound(noiseNoteNumber));
	drumSynth.addVoice(new NoiseVoice());


	osdTestSynth.addSound(new SamplerSound("OSD Test Sound", *readerOSDTestSound, osdTestSoundNoteRange, osdTestSoundNoteNumber, 0.0, 0.0, 5.0));
	osdTestSynth.addVoice(new SamplerVoice());
}

void DrumMachine::setDrumSound(String soundName, File sample) {
    WavAudioFormat wavFormat;
    
    ScopedPointer<AudioFormatReader> audioReader(wavFormat.createReaderFor(new FileInputStream(sample), true));
    
    BigInteger notes;
    notes.setRange(lastNote, 1, true);
    
    synth.addSound(new SamplerSound(soundName, *audioReader, notes,
                                    lastNote,   // root midi note
                                    0.0,  // attack time
                                    0.0,  // release time
                                    10.0  // maximum sample length
                                    ));
    
    soundToNote.set(soundName, lastNote++);
}

    Writer (OutputStream* destStream, const String& formatName,
            const File& lameApp, int vbr, int cbr,
            double sampleRate, unsigned int numberOfChannels,
            unsigned int bitsPerSample, const StringPairArray& metadata)
        : AudioFormatWriter (destStream, formatName, sampleRate,
                             numberOfChannels, bitsPerSample),
          vbrLevel (vbr), cbrBitrate (cbr),
          tempWav (".wav")
    {
        WavAudioFormat wavFormat;

        if (FileOutputStream* out = tempWav.getFile().createOutputStream())
        {
            writer = wavFormat.createWriterFor (out, sampleRate, numChannels,
                                                bitsPerSample, metadata, 0);

            args.add (lameApp.getFullPathName());

            args.add ("--quiet");

            if (cbrBitrate == 0)
            {
                args.add ("--vbr-new");
                args.add ("-V");
                args.add (String (vbrLevel));
            }
            else
            {
                args.add ("--cbr");
                args.add ("-b");
                args.add (String (cbrBitrate));
            }

            addMetadataArg (metadata, "id3title",       "--tt");
            addMetadataArg (metadata, "id3artist",      "--ta");
            addMetadataArg (metadata, "id3album",       "--tl");
            addMetadataArg (metadata, "id3comment",     "--tc");
            addMetadataArg (metadata, "id3date",        "--ty");
            addMetadataArg (metadata, "id3genre",       "--tg");
            addMetadataArg (metadata, "id3trackNumber", "--tn");
        }
    }

void AudioRecorder::startRecording(const File& file){
        stop();
        if (sampleRate > 0) {
            file.deleteFile();
            ScopedPointer<FileOutputStream> fileStream(file.createOutputStream());
            if (fileStream != nullptr) {
                WavAudioFormat wavFormat;
                AudioFormatWriter* writer = wavFormat.createWriterFor(fileStream,
                                                                      sampleRate, 1, 16, StringPairArray(), 0);
                if (writer != nullptr) {
                    fileStream.release();
                    threadedWriter = new AudioFormatWriter::ThreadedWriter(writer,
                                                                           backgroundThread, 32768);
                   // thumbnail.reset(writer->getNumChannels(), writer->getSampleRate());
                    nextSampleNum = 0;
                    const ScopedLock sl(writerLock);
                    activeWriter = threadedWriter;
                }
            }
        }
    }

    void setUsingSampledSound()
    {
        WavAudioFormat wavFormat;

        ScopedPointer<AudioFormatReader> audioReader (wavFormat.createReaderFor (new MemoryInputStream (BinaryData::cello_wav,
                                                                                                        BinaryData::cello_wavSize,
                                                                                                        false),
                                                                                 true));

        BigInteger allNotes;
        allNotes.setRange (0, 128, true);

        synth.clearSounds();
        synth.addSound (new SamplerSound ("demo sound",
                                          *audioReader,
                                          allNotes,
                                          74,   // root midi note
                                          0.1,  // attack time
                                          0.1,  // release time
                                          10.0  // maximum sample length
                                          ));
    }

void MainPanel::setAudio (int audioId)
{
  AudioSource* source = 0;

  switch (audioId)
  {
  case 1: // Amen Break
    {
      WavAudioFormat waf;
      AudioFormatReader* afr = waf.createReaderFor (
        new MemoryInputStream (binaries::amenbreakloop_wav,
          binaries::amenbreakloop_wavSize,
          false),
        true);

      source = new ResamplingReader (afr);
    }
    break;

  case 2: // sine wave
    {
      ToneGeneratorAudioSource* tgas = new ToneGeneratorAudioSource ();
      tgas->setFrequency (440);
      tgas->setAmplitude (1.f);
      source = tgas;
    }
    break;

  case 3: // White Noise
    source = new NoiseAudioSource;
    break;

  case 4: // Pink Noise
    source = new NoiseAudioSource (true);
    break;
  };

  MainApp::getInstance().getAudioOutput().setSource (source);
}

void Sample::update(const String& path, WavAudioFormat& wavAudioFormat)
{
	// Don't load a subsequent sample if a new sample is already loaded (but not yet played).
	if (_readyToSwap)
		return;

	// Find audio file.
	String fileName(path);
	fileName = File::addTrailingSeparator(fileName);
	fileName += _name;
	fileName += EXT;
	File file(fileName);

	Time modification = file.getLastModificationTime();
	if (modification <= _lastModification)
		return;

	// Read audio file. We only read the left channel, mono is good enough.
	AudioFormatReader* reader = wavAudioFormat.createReaderFor(file.createInputStream(), true);
	if (reader == nullptr)
		return;
	_lastModification = modification;

	int64 start = reader->searchForLevel(0, reader->lengthInSamples, SAMPLE_START_THRESHOLD, 1.0, 0);
	if (start == -1)
		start = 0;
	int count = (int)(reader->lengthInSamples - start);

	_processor->writeTrace(String() << "Loading " << _name << " from disk (skip=" << start << ")");

	int newIndex = !_bufferIndex;
	AudioSampleBuffer* buffer = &(_buffers[newIndex]);
	buffer->setSize(1, count);

	reader->read(buffer, 0, count, start, true, false);

	delete reader;

	// Done.
	_readyToSwap = true;
}

		virtual void menuItemSelected(int menuItemID, int)
		{
			if (menuItemID == 200)
			{
				WildcardFileFilter wildcardFilter("*.mid", String::empty, "Midi files");
				FileBrowserComponent browser(FileBrowserComponent::canSelectFiles | FileBrowserComponent::openMode, 
					lastOpenedFile.exists() ? lastOpenedFile : File(String("C:\\Users\\GeorgeKrueger\\Documents")), &wildcardFilter, nullptr);
				FileChooserDialogBox dialogBox("Open a midi file",
					"Please choose a midi file to open...",
					browser,
					false,
					Colours::lightgrey);

				if (dialogBox.show())
				{
					File selectedFile = browser.getSelectedFile(0);
					lastOpenedFile = selectedFile;
					FileInputStream fileStream(selectedFile);
					juce::MidiFile midiFile;
					midiFile.readFrom(fileStream);
					int numTracks = midiFile.getNumTracks();
					midiFile.convertTimestampTicksToSeconds();
					String msg;
					msg << "Opened midi file: " << selectedFile.getFileName() << " Tracks: " << numTracks << "\n";
					log(msg);

					for (int i = 0; i < numTracks; ++i)
					{
						const MidiMessageSequence* msgSeq = midiFile.getTrack(i);
						
						OwnedArray<PluginDescription> results;
						String plugFile = "C:\\VST\\FMMF.dll";
						VSTPluginFormat vstFormat;
						vstFormat.findAllTypesForFile(results, plugFile);
						if (results.size() > 0) {
							msg.clear();
							msg << "Found " << results.size() << " plugin(s) matching file " << plugFile << "\n";
							log(msg);

							int secsToRender = 10;
							double sampleRate = 44100;
							int totalSizeInSamples = static_cast<int>(44100 * secsToRender);
							AudioPluginInstance* plugInst = vstFormat.createInstanceFromDescription(*results[0], sampleRate, totalSizeInSamples);
							if (!plugInst) {
								msg.clear();
								msg << "Failed to load plugin " << plugFile << "\n";
								log(msg);
								continue;
							}

							int numInputChannels = plugInst->getTotalNumInputChannels();
							int numOutputChannels = plugInst->getTotalNumOutputChannels();
							msg.clear();
							msg << "Plugin input channels: " << numInputChannels << " output channels: " << numOutputChannels 
								<< " Current program: " << plugInst->getCurrentProgram() << "\n";
							log(msg);

							int maxChannels = std::max(numInputChannels, numOutputChannels);
							AudioBuffer<float> buffer(maxChannels, totalSizeInSamples);
							
							MidiBuffer midiMessages;
							for (int j = 0; j < msgSeq->getNumEvents(); ++j)
							{
								MidiMessageSequence::MidiEventHolder* midiEventHolder = msgSeq->getEventPointer(j);
								MidiMessage midiMsg = midiEventHolder->message;
								int samplePos = static_cast<int>(midiMsg.getTimeStamp() * sampleRate);
								midiMessages.addEvent(midiMsg, samplePos);
							}

							plugInst->prepareToPlay(sampleRate, totalSizeInSamples);
							plugInst->processBlock(buffer, midiMessages);

							/*File txtOutFile("C:\\Users\\GeorgeKrueger\\Documents\\GitHub\\soundserver2\\out.txt");
							FileOutputStream* txtOutStream = txtOutFile.createOutputStream();
							for (int j = 0; j < 44100; ++j)
							{
								float sample = buffer.getSample(0, j);
								txtOutStream->writeFloat(sample);
								txtOutStream->writeText(" ", true, false);
							}*/

							File outputFile("C:\\Users\\GeorgeKrueger\\Documents\\GitHub\\soundserver2\\out.wav");
							if (outputFile.exists()) {
								outputFile.deleteFile();
							}
							FileOutputStream* fileOutputStream = outputFile.createOutputStream();
							WavAudioFormat wavFormat;
							StringPairArray metadataValues;
							juce::AudioFormatWriter* wavFormatWriter = wavFormat.createWriterFor(
								fileOutputStream, sampleRate, 2, 16, metadataValues, 0);
							bool writeAudioDataRet = wavFormatWriter->writeFromAudioSampleBuffer(buffer, 0, buffer.getNumSamples());
							wavFormatWriter->flush();

							msg.clear();
							msg << "Done writing to output file " << outputFile.getFileName() << " . Write return value: " 
								<< (int)writeAudioDataRet << "\n";
							log(msg);

							delete wavFormatWriter;
							delete plugInst;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		// inverse short time fourier transform on temp_L and temp_R
		istft->performInverseTransform(temp_L, ifftResults_Left);
		istft->rescale(ifftResults_Left);
		istft->performInverseTransform(temp_R, ifftResults_Right);
		istft->rescale(ifftResults_Right);

		// set values in output signal arrays for Harmonic output signal
		for (int i = 0; i < WINDOW_SIZE; i++)
		{
			outputSignal_H[0].set(offset + i, (outputSignal_H[0][offset + i] + (ifftResults_Left[i] * istft->window[i])));
			outputSignal_H[1].set(offset + i, (outputSignal_H[1][offset + i] + (ifftResults_Right[i] * istft->window[i])));
		}

		// insert 4096 samples into temp arrays from percussive spectrogram
		for (int row = 0; row < WINDOW_SIZE; row++)
		{
			temp_L[row] = percussiveSpectrogramReal_Left(row, col);
			temp_R[row] = percussiveSpectrogramReal_Right(row, col);
		}

		// inverse short time fourier transform on temp arrays
		istft->performInverseTransform(temp_L, ifftResults_Left);
		istft->rescale(ifftResults_Left);
		istft->performInverseTransform(temp_R, ifftResults_Right);
		istft->rescale(ifftResults_Right);

		// set values in output arrays for Percussive output signal
		for (int i = 0; i < WINDOW_SIZE; i++)
		{
			outputSignal_P[0].set(offset + i, (outputSignal_P[0][offset + i] + (ifftResults_Left[i] * istft->window[i])));
			outputSignal_P[1].set(offset + i, (outputSignal_P[1][offset + i] + (ifftResults_Right[i] * istft->window[i])));
		}

		offset += HOP_SIZE;	// increment offset by HOP_SIZE (1024)
	}

	//===================================================== WRITE FILES ==
	float gain = 0.5f; // 1.0f divided by num of output files (2)

	AudioSampleBuffer outSamples_H(2, numSamples);
	AudioSampleBuffer outSamples_P(2, numSamples);

	outSamples_H.clear();
	outSamples_P.clear();

	const float* leftData_H = outputSignal_H[0].getRawDataPointer();
	const float* rightData_H = outputSignal_H[1].getRawDataPointer();
	const float* leftData_P = outputSignal_P[0].getRawDataPointer();
	const float* rightData_P = outputSignal_P[1].getRawDataPointer();

	outSamples_H.addFrom(0, 0, leftData_H, numSamples, gain);
	outSamples_H.addFrom(1, 0, rightData_H, numSamples, gain);

	outSamples_P.addFrom(0, 0, leftData_P, numSamples, gain);
	outSamples_P.addFrom(1, 0, rightData_P, numSamples, gain);

	File* outputFile_H = new File(File::getCurrentWorkingDirectory().getChildFile(fileNameNoExt + "_harmonic.wav"));
	File* outputFile_P = new File(File::getCurrentWorkingDirectory().getChildFile(fileNameNoExt + "_percussive.wav"));
	
	if (outputFile_H->exists())
	{
		outputFile_H->deleteFile();
	}

	if (outputFile_P->exists())
	{
		outputFile_P->deleteFile();
	}

	FileOutputStream* output_H;
	FileOutputStream* output_P;

	output_H = outputFile_H->createOutputStream();
	output_P = outputFile_P->createOutputStream();

	// write from sample buffer
	WavAudioFormat* wavFormat = new WavAudioFormat();
	AudioFormatWriter* writer = wavFormat->createWriterFor(output_H, 44100.0, numChannels, 16, NULL, 0);
	writer->flush();
	writer->writeFromAudioSampleBuffer(outSamples_H, 0, numSamples);
	delete writer;

	writer = wavFormat->createWriterFor(output_P, 44100.0, numChannels, 16, NULL, 0);
	writer->flush();
	writer->writeFromAudioSampleBuffer(outSamples_P, 0, numSamples);

	// cleanup
	delete writer;
	delete wavFormat;
	wavFormat = nullptr;
	writer = nullptr;

	outSamples_H.clear();
	outSamples_P.clear();
	outputSignal_H[0].clear();
	outputSignal_H[1].clear();
	outputSignal_P[0].clear();
	outputSignal_P[1].clear();

}

//.........这里部分代码省略.........
		o.resizable = false;

		o.runModal();

		ScopedPointer<XmlElement> audioState(deviceManager.createStateXml());

		getAppProperties().getUserSettings()->setValue("audioDeviceState", audioState);
		getAppProperties().getUserSettings()->saveIfNeeded();
        //[/UserButtonCode_settingsButton]
    }
    else if (buttonThatWasClicked == playButton)
    {
        //[UserButtonCode_playButton] -- add your button handler code here..
		const ScopedLock pal(playheadAudioLock);
		playheadState = PlayheadState::playing;
		playheadAudioSamplesCompleted = 0;
        //[/UserButtonCode_playButton]
    }
    else if (buttonThatWasClicked == loopButton)
    {
        //[UserButtonCode_loopButton] -- add your button handler code here..
		const ScopedLock pal(playheadAudioLock);
		playheadState = PlayheadState::looping;
        //[/UserButtonCode_loopButton]
    }
    else if (buttonThatWasClicked == stopButton)
    {
        //[UserButtonCode_stopButton] -- add your button handler code here..
		const ScopedLock pal(playheadAudioLock);
		playheadState = PlayheadState::stopped;
		playheadAudioSamplesCompleted = 0;
        //[/UserButtonCode_stopButton]
    }
    else if (buttonThatWasClicked == qDefaultButton)
    {
        //[UserButtonCode_qDefaultButton] -- add your button handler code here..
		qSlider->setValue(1.0);
        //[/UserButtonCode_qDefaultButton]
    }
    else if (buttonThatWasClicked == sDefaultButton)
    {
        //[UserButtonCode_sDefaultButton] -- add your button handler code here..
		sSlider->setValue(1.0);
        //[/UserButtonCode_sDefaultButton]
    }
    else if (buttonThatWasClicked == saveButton)
    {
        //[UserButtonCode_saveButton] -- add your button handler code here..
		const ScopedLock pal(playheadAudioLock);

		if (playheadAudio.getNumChannels() > 0 && playheadAudio.getNumSamples() > 0) {
			FileChooser fileChooser("Save as...", File::nonexistent, "*.wav", true);
			if (fileChooser.browseForFileToSave(true)) {
				File outputFile = fileChooser.getResult();
				outputFile.deleteFile();
				WavAudioFormat wavFormat;
				ScopedPointer<FileOutputStream> outputFileStream = outputFile.createOutputStream();
				ScopedPointer<AudioFormatWriter> writer = wavFormat.createWriterFor(outputFileStream, 44100.0, playheadAudio.getNumChannels(), 16, StringPairArray(), 0);
				writer->writeFromAudioSampleBuffer(playheadAudio, 0, playheadAudio.getNumSamples());
				outputFileStream.release();
			}
		}
        //[/UserButtonCode_saveButton]
    }
    else if (buttonThatWasClicked == inputRemoveButton)
    {
        //[UserButtonCode_inputRemoveButton] -- add your button handler code here..
		const ScopedLock fl(soundListLock);
		SparseSet<int> selectedRows = inputFileListComponent->getSelectedRows();
		for (int i = 0; i < selectedRows.size(); ++i) {
			int row = selectedRows[i];
			int id = inputFileListComponent->getIdForRow(row);
			const auto& iter = idToSound.find(id);
			jassert(iter != idToSound.end());
			idToSound.erase(iter);
		}
		if (selectedRows.size() > 0) {
			inputFilesChanged(dontSendNotification);
		}
        //[/UserButtonCode_inputRemoveButton]
    }
    else if (buttonThatWasClicked == inputAddButton)
    {
        //[UserButtonCode_inputAddButton] -- add your button handler code here..
		const ScopedLock fl(soundListLock);
		FileChooser fileChooser("Add sound...", File::nonexistent, "*.wav;*.aif;*.aiff;*.ogg", true);
		if (fileChooser.browseForMultipleFilesToOpen()) {
			Array<File> files = fileChooser.getResults();
			StringArray filePaths;
			for (int i = 0; i < files.size(); ++i) {
				filePaths.add(files[i].getFullPathName());
			}
			filesDropped(filePaths, -1, -1);
		}
        //[/UserButtonCode_inputAddButton]
    }

    //[UserbuttonClicked_Post]
    //[/UserbuttonClicked_Post]
}

//.........这里部分代码省略.........
			graph->addConnection(1000, 1, AUDIO_OUT_ID, 1);

			plugInst->setCurrentProgram(program);

			int numInputChannels = plugInst->getTotalNumInputChannels();
			int numOutputChannels = plugInst->getTotalNumOutputChannels();
			cout << "----- Plugin Information -----" << endl;
			cout << "Input channels : " << numInputChannels << endl;
			cout << "Output channels : " << numOutputChannels << endl;
			cout << "Num Programs: " << plugInst->getNumPrograms() << endl;
			cout << "Current program: " << plugInst->getCurrentProgram() << endl;

			int numParams = plugInst->getNumParameters();
			cout << "Num Parameters: " << numParams << endl;
			for (int p = 0; p < numParams; ++p)
			{
				std::cout << "Param " << p << ": " << plugInst->getParameterName(p);
				if (!plugInst->getParameterLabel(p).isEmpty()) {
					cout << "(" << plugInst->getParameterLabel(p) << ")";
				}
				cout << " = " << plugInst->getParameter(p) << endl;
			}
			cout << "-----------------------------" << endl;

			int maxChannels = std::max(numInputChannels, numOutputChannels);
			AudioBuffer<float> entireAudioBuffer(maxChannels, totalSizeInSamples);
			entireAudioBuffer.clear();
			unsigned int midiSeqPos = 0;

			graph->releaseResources();
			graph->prepareToPlay(sampleRate, blockSize);

			cout << "Num midi events: " << msgSeq->getNumEvents() << endl;

			// Render the audio in blocks
			for (int t = 0; t < totalSizeInSamples; t += blockSize)
			{
				//cout << "processing block " << t << " to " << t + blockSize << endl;
				MidiBuffer midiBuffer;
				for (int j = midiSeqPos; j < msgSeq->getNumEvents(); ++j)
				{
					MidiMessageSequence::MidiEventHolder* midiEventHolder = msgSeq->getEventPointer(j);
					MidiMessage midiMsg = midiEventHolder->message;
					int samplePos = static_cast<int>(midiMsg.getTimeStamp() * sampleRate);
					if (samplePos >= t && samplePos < t + blockSize) {
						if (midiMsg.isNoteOnOrOff()) {
							if (midiMsg.isNoteOn()) {
								cout << "note on event (" << midiMsg.getNoteNumber() << ") at " << samplePos << "(" << midiMsg.getTimeStamp() << "s) bufferpos=" << (samplePos - t) << endl;
							}
							else if (midiMsg.isNoteOff()) {
								cout << "note off event (" << midiMsg.getNoteNumber() << ") at " << samplePos << "(" << midiMsg.getTimeStamp() << "s) bufferpos=" << (samplePos - t) << endl;
							}
							midiBuffer.addEvent(midiMsg, samplePos - t);
						}
						else if (midiMsg.isProgramChange()) {
							program = midiMsg.getProgramChangeNumber();
							plugInst->setCurrentProgram(program);
						}
						midiSeqPos++;
					}
					else {
						break;
					}
				}

				playHead.posInfo.timeInSamples = t;
				playHead.posInfo.timeInSeconds = t / sampleRate;

				AudioBuffer<float> blockAudioBuffer(entireAudioBuffer.getNumChannels(), blockSize);
				blockAudioBuffer.clear();
				graph->processBlock(blockAudioBuffer, midiBuffer);

				for (int ch = 0; ch < entireAudioBuffer.getNumChannels(); ++ch) {
					entireAudioBuffer.addFrom(ch, t, blockAudioBuffer, ch, 0, blockSize);
				}
			}

			if (outWavFile.exists()) {
				outWavFile.deleteFile();
			}
			FileOutputStream* fileOutputStream = outWavFile.createOutputStream();
			WavAudioFormat wavFormat;
			StringPairArray metadataValues;
			juce::AudioFormatWriter* wavFormatWriter = wavFormat.createWriterFor(
				fileOutputStream, sampleRate, 2, 16, metadataValues, 0);
			bool writeAudioDataRet = wavFormatWriter->writeFromAudioSampleBuffer(entireAudioBuffer, 0, entireAudioBuffer.getNumSamples());
			wavFormatWriter->flush();

			cout << "Done writing to output file " << outWavFile.getFileName() << " . Write return value: "
				<< (int)writeAudioDataRet << endl;

			delete wavFormatWriter;
		}
		else {
			cerr << "Could not find plugin from file " << plugFile << endl;
		}
	}

    return 0;
}