/*
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;
}
}
}
}
//==============================================================================
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;
}
}
}
}
BEGIN_UGEN_NAMESPACE
#include "ugen_DiskOut.h"
#include "../ugen_JuceUtility.h"
DiskOutUGenInternal::DiskOutUGenInternal(File const& file, UGen const& input, bool overwriteExisitingFile, int bitDepth) throw()
: ProxyOwnerUGenInternal(NumInputs, input.getNumChannels()-1),
audioFormatWriter(0),
bufferData(0),
numInputChannels(input.getNumChannels())
{
ugen_assert(bitDepth >= 16);
inputs[Input] = input;
bufferData = new float*[numInputChannels];
memset(bufferData, 0, numInputChannels * sizeof(float*));
File outputFile(file);
if(outputFile.getFileExtension().isEmpty())
outputFile = outputFile.withFileExtension("wav");
if(overwriteExisitingFile == true && outputFile.exists())
outputFile.deleteFile();
else if(outputFile.exists())
{
ugen_assertfalse;
return;
}
if(outputFile.hasFileExtension(".wav"))
{
WavAudioFormat wavAudioFormat;
FileOutputStream* fileOutputStream = outputFile.createOutputStream();
if(fileOutputStream)
audioFormatWriter = wavAudioFormat.createWriterFor(fileOutputStream,
UGen::getSampleRate(),
numInputChannels,
bitDepth, 0, 0);
}
else if(outputFile.hasFileExtension(".aif")
|| outputFile.hasFileExtension(".aiff"))
{
AiffAudioFormat aiffAudioFormat;
FileOutputStream* fileOutputStream = outputFile.createOutputStream();
if(fileOutputStream)
audioFormatWriter = aiffAudioFormat.createWriterFor(fileOutputStream,
UGen::getSampleRate(),
numInputChannels,
bitDepth, 0, 0);
}
}
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;
}
}
}
}
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;
}
else {
msg.clear();
msg << "Could not find plugin from file " << plugFile << "\n";
log(msg);
}
}
}
}
}
void MedianSeparator::writeFiles()
{
ScopedPointer<ISTFT> istft = new ISTFT();
istft->initWindow(1);
// Matrices to hold real number data after conversion
Eigen::MatrixXf harmonicSpectrogramReal_Left;
Eigen::MatrixXf harmonicSpectrogramReal_Right;
Eigen::MatrixXf percussiveSpectrogramReal_Left;
Eigen::MatrixXf percussiveSpectrogramReal_Right;
// initialise with zeros
harmonicSpectrogramReal_Left = MatrixXf::Zero(WINDOW_SIZE, numCols);
harmonicSpectrogramReal_Right = MatrixXf::Zero(WINDOW_SIZE, numCols);
percussiveSpectrogramReal_Left = MatrixXf::Zero(WINDOW_SIZE, numCols);
percussiveSpectrogramReal_Right = MatrixXf::Zero(WINDOW_SIZE, numCols);
// convert complex spectrogram data to real spectrogram data
harmonicSpectrogramReal_Left = istft->complexToReal(resynthSpectrogram_H[0]);
harmonicSpectrogramReal_Right = istft->complexToReal(resynthSpectrogram_H[1]);
percussiveSpectrogramReal_Left = istft->complexToReal(resynthSpectrogram_P[0]);
percussiveSpectrogramReal_Right = istft->complexToReal(resynthSpectrogram_P[1]);
// arrays to hold output signals for harmonic and percussive files
Array<float> outputSignal_P[2];
Array<float> outputSignal_H[2];
// fill with zeros (faster than looping through)
outputSignal_P[0].insertMultiple(0, 0.0f, numSamples);
outputSignal_P[1].insertMultiple(0, 0.0f, numSamples);
outputSignal_H[0].insertMultiple(0, 0.0f, numSamples);
outputSignal_H[1].insertMultiple(0, 0.0f, numSamples);
// add-overlap ====================
int offset = 0;
float temp_L[WINDOW_SIZE] = {};
float temp_R[WINDOW_SIZE] = {};
float ifftResults_Left[WINDOW_SIZE] = {};
float ifftResults_Right[WINDOW_SIZE] = {};
// loop through each column in spectrograms
for (int col = 0; col < numCols; col++)
{
// insert 4096 samples into temp arrays from harmonic spectrogram
for (int row = 0; row < WINDOW_SIZE; row++)
{
temp_L[row] = harmonicSpectrogramReal_Left(row, col);
temp_R[row] = harmonicSpectrogramReal_Right(row, col);
}
// 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();
}
void MainContentComponent::buttonClicked (Button* buttonThatWasClicked)
{
//[UserbuttonClicked_Pre]
//[/UserbuttonClicked_Pre]
if (buttonThatWasClicked == convButton)
{
//[UserButtonCode_convButton] -- add your button handler code here..
const ScopedLock fl(soundListLock);
setPlayheadUiEnabled(false);
bool convValid = true;
float q;
float s;
double nfft;
{
const ScopedLock pl(paramLock);
q = qParam;
s = sParam;
nfft = static_cast<double>(nfftParam);
}
int fftInputLen = static_cast<int>(std::pow(2.0, nfft));
int fftOutputLen = fftInputLen / 2 + 1;
int numChannels = 1;
unordered_set<int> includedSounds;
int maxChannels = 0;
float pSum = 0.0f;
float rSum = 0.0f;
for (const auto& iter : idToSound) {
int id = iter.first;
Sound* sound = iter.second.get();
int numChannels = sound->getBufferNumChannels();
if (sound->isIncluded() && numChannels > 0) {
maxChannels = numChannels > maxChannels ? numChannels : maxChannels;
includedSounds.emplace(id);
pSum += static_cast<float>(sound->getPValue());
rSum += static_cast<float>(sound->getRValue());
}
}
float n = static_cast<float>(includedSounds.size());
float pScale = n * q / pSum;
float rScale = n * s / rSum;
if (maxChannels == 0) {
return;
}
kiss_fftr_state* fftInverseState = kiss_fftr_alloc(fftInputLen, 1, nullptr, nullptr);
kiss_fft_cpx* CONV = static_cast<kiss_fft_cpx*>(calloc(fftOutputLen * maxChannels, sizeof(kiss_fft_cpx)));
conv.setSize(maxChannels, fftInputLen);
float max = -1.0f;
// convolve
for (int convChannel = 0; convChannel < maxChannels; ++convChannel) {
kiss_fft_cpx* CONVCHANNEL = CONV + (convChannel * fftOutputLen);
bool isFirstSound = true;
for (const auto& id : includedSounds) {
Sound* sound = idToSound[id].get();
jassert(sound != nullptr);
float p = pScale * static_cast<float>(sound->getPValue());
float r = rScale * static_cast<float>(sound->getRValue());
int soundNumChannels = sound->getBufferNumChannels();
int soundNumSamples = sound->getBufferNumSamples();
int soundChannel = convChannel >= soundNumChannels ? soundNumChannels - 1 : convChannel;
const kiss_fft_cpx* SOUNDCHANNEL = sound->getSpectra(fftInputLen, soundChannel);
for (int i = 0; i < fftOutputLen; ++i) {
float xr = SOUNDCHANNEL[i].r;
float xi = SOUNDCHANNEL[i].i;
float xMag = sqrtf((xr * xr) + (xi * xi));
float xPhs = atan2f(xi, xr);
float convMag = powf(xMag, p);
float convPhs = r * xPhs;
float convr = convMag * cosf(convPhs);
float convi = convMag * sinf(convPhs);
if (std::isnan(convr) || std::isnan(convi)) {
convValid = false;
}
if (isFirstSound) {
CONVCHANNEL[i].r = convr;
CONVCHANNEL[i].i = convi;
}
else {
float a = CONVCHANNEL[i].r;
float b = CONVCHANNEL[i].i;
float c = convr;
float d = convi;
CONVCHANNEL[i].r = a * c - b * d;
CONVCHANNEL[i].i = a * d + b * c;
}
}
isFirstSound = false;
}
// ifft
kiss_fftri(fftInverseState, CONVCHANNEL, conv.getWritePointer(convChannel));
// check max
float channelMax = conv.findMinMax(convChannel, 0, fftInputLen).getEnd();
max = channelMax > max ? channelMax : max;
}
delete fftInverseState;
delete CONV;
// normalize
conv.applyGain(1.0f / max);
if (!convValid) {
AlertWindow::showMessageBoxAsync(AlertWindow::WarningIcon, "Error", "Parameters produced NaN value.");
return;
}
setPlayheadAudio(&conv);
//[/UserButtonCode_convButton]
}
else if (buttonThatWasClicked == settingsButton)
{
//[UserButtonCode_settingsButton] -- add your button handler code here..
AudioDeviceSelectorComponent audioSettingsComp(deviceManager,
0, 256,
0, 256,
true, true, true, false);
audioSettingsComp.setSize(500, 450);
DialogWindow::LaunchOptions o;
o.content.setNonOwned(&audioSettingsComp);
o.dialogTitle = "Audio Settings";
o.componentToCentreAround = this;
o.dialogBackgroundColour = Colours::azure;
o.escapeKeyTriggersCloseButton = true;
o.useNativeTitleBar = false;
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]
}
//==============================================================================
int main (int argc, char* argv[])
{
if (argc != 3) {
cout << "Usage: <prog> <midi input file> <wav output file>" << endl;
return 0;
}
File inMidiFile = File(argv[1]);
File outWavFile = File(argv[2]);
//File inMidiFile = File("C:\\Users\\GeorgeKrueger\\Documents\\GitHub\\pymusic\\out.mid");
//File outWavFile = File("C:\\Users\\GeorgeKrueger\\Documents\\GitHub\\pymusic\\out.wav");
FileInputStream fileStream(inMidiFile);
juce::MidiFile midiFile;
midiFile.readFrom(fileStream);
int numTracks = midiFile.getNumTracks();
midiFile.convertTimestampTicksToSeconds();
std::cout << "Opened midi file: " << inMidiFile.getFileName() << " Tracks: " << numTracks << std::endl;;
playHead.posInfo.bpm = 120;
playHead.posInfo.isPlaying = true;
playHead.posInfo.timeInSamples = 0;
playHead.posInfo.timeInSeconds = 0;
playHead.posInfo.timeSigNumerator = 4;
playHead.posInfo.timeSigDenominator = 4;
for (int i = 0; i < numTracks; ++i)
{
const juce::MidiMessageSequence* msgSeq = midiFile.getTrack(i);
double trackLengthSeconds = 0;
String plugFile = "";
int program = 0;
for (int j = 0; j < msgSeq->getNumEvents(); ++j)
{
juce::MidiMessageSequence::MidiEventHolder* midiEventHolder = msgSeq->getEventPointer(j);
juce::MidiMessage midiMsg = midiEventHolder->message;
if (midiMsg.isMetaEvent() && midiMsg.getMetaEventType() == 0x04) {
// Instrument meta event
int instrLength = midiMsg.getMetaEventLength();
const juce::uint8* instrChars = midiMsg.getMetaEventData();
String instrName((char*)instrChars, instrLength);
plugFile = instrName;
}
if (midiMsg.isMetaEvent() && midiMsg.isEndOfTrackMetaEvent()) {
//int oetDataLength = midiMsg.getMetaEventLength();
//const uint8* oetData = midiMsg.getMetaEventData();
//std::cout << "Found end of track event data size: " << oetDataLength << " data: " << oetData << std::endl;
trackLengthSeconds = midiMsg.getTimeStamp();
std::cout << "Track length in seconds: " << trackLengthSeconds << std::endl;
}
}
if (trackLengthSeconds == 0) {
std::cerr << "Skipping track " << i << " since it has zero length" << std::endl;
continue;
}
if (plugFile.isEmpty()) {
plugFile = "C:\\VST\\helm.dll";
std::cout << "No plug found for track. Defaulting to: " << plugFile << std::endl;
//std::cerr << "Skipping track " << i << ". No instrument found." << std::endl;
//continue;
}
else {
std::cout << "Found plugin file '" << plugFile << "' from track " << i << std::endl;
}
OwnedArray<PluginDescription> results;
VSTPluginFormat vstFormat;
vstFormat.findAllTypesForFile(results, plugFile);
if (results.size() > 0) {
std::cout << "Found " << results.size() << " plugin(s) in file '" << plugFile << "'" << std::endl;
int blockSize = 1024;
double sampleRate = 44100;
int totalSizeInSamples = ((static_cast<int>(44100 * trackLengthSeconds) / 1024) + 1) * 1024;
cout << "Total samples to render " << totalSizeInSamples << endl;
juce::AudioPluginInstance* plugInst = vstFormat.createInstanceFromDescription(*results[0], sampleRate, blockSize);
if (!plugInst) {
cout << "Failed to load plugin " << plugFile << endl;
continue;
}
AudioProcessorGraph* graph = new AudioProcessorGraph();
graph->setPlayConfigDetails(0, 2, sampleRate, blockSize);
graph->setPlayHead(&playHead);
graph->addNode(plugInst, 1000);
int AUDIO_IN_ID = 101;
int AUDIO_OUT_ID = 102;
int MIDI_IN_ID = 103;
juce::AudioPluginInstance* audioInNode = new AudioGraphIOProcessor(AudioGraphIOProcessor::audioInputNode);
juce::AudioPluginInstance* audioOutNode = new AudioGraphIOProcessor(AudioGraphIOProcessor::audioOutputNode);
juce::AudioPluginInstance* midiInNode = new AudioGraphIOProcessor(AudioGraphIOProcessor::midiInputNode);
graph->addNode(audioInNode, AUDIO_IN_ID);
graph->addNode(audioOutNode, AUDIO_OUT_ID);
graph->addNode(midiInNode, MIDI_IN_ID);
graph->addConnection(AUDIO_IN_ID, 0, 1000, 0);
graph->addConnection(AUDIO_IN_ID, 1, 1000, 1);
graph->addConnection(MIDI_IN_ID, AudioProcessorGraph::midiChannelIndex, 1000, AudioProcessorGraph::midiChannelIndex);
graph->addConnection(1000, 0, AUDIO_OUT_ID, 0);
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;
}