Juce Synthesiser and getNextAudioBlock

Audio Plugins
1

Hi,

I make vst plugin. I use Juce Synthesiser class to play different samples on different notes. Everything is good with that.
But now I want to add functionality to play sounds on button click (sounds which were not loaded to my synth).

I tried an example from Juce tutorial. But have no sound.

What could be wrong?

My code

void MySynthAudioProcessor::playSound(File file){
     auto* reader = formatManager.createReaderFor(file);
     if (reader != nullptr)
     {
         AudioFormatReaderSource* newSource = new AudioFormatReaderSource(reader, true);
         transportSource.setSource(newSource, 32768, &readAheadThread, reader->sampleRate);
         transportSource.setGain(1);
     }
}

void MySynthAudioProcessor::processBlock(AudioSampleBuffer& buffer, MidiBuffer& midiMessages)
{
     synth.renderNextBlock(buffer, midiMessages, 0, buffer.getNumSamples());
     transportSource.getNextAudioBlock(AudioSourceChannelInfo(buffer));
}

void MySynthAudioProcessor::prepareToPlay(double sampleRate, int samplesPerBlock)
{
    ignoreUnused(samplesPerBlock);
    synth.setCurrentPlaybackSampleRate(lastSampleRate);
    transportSource.prepareToPlay(samplesPerBlock, sampleRate);
}

Thank you

2

Add one more thing, with that line

playbackTransportSourcce.getNextAudioBlock(AudioSourceChannelInfo(buffer));

there is no sound from synth too. Without this line everything is working.

3

done