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;
}
void setTickSample (void const* audioData, int dataBytes)
{
ScopedPointer <MemoryInputStream> mis (new MemoryInputStream (audioData, dataBytes, false));
m_synth.clearVoices ();
m_synth.clearSounds ();
AudioFormatManager afm;
afm.registerBasicFormats ();
{
ScopedPointer <AudioFormatReader> afr (afm.createReaderFor (mis));
if (afr != nullptr)
{
mis.release ();
BigInteger midiNotes;
midiNotes.setRange (0, 127, true);
SynthesiserSound::Ptr sound = new SamplerSound (
"Tick",
*afr,
midiNotes,
60,
0,
0,
60./40.);
m_synth.addSound (sound);
m_synth.addVoice (new SamplerVoice);
}
}
}
//==============================================================================
SynthAudioSource (MidiKeyboardState& keyboardState_)
: keyboardState (keyboardState_)
{
// add some voices to our synth, to play the sounds..
for (int i = 4; --i >= 0;)
{
synth.addVoice (new SineWaveVoice()); // These voices will play our custom sine-wave sounds..
synth.addVoice (new SamplerVoice()); // and these ones play the sampled sounds
}
// and add some sounds for them to play...
setUsingSineWaveSound();
}
void prepareToPlay (int samplesPerBlockExpected,
double sampleRate)
{
midiCollector.reset (sampleRate);
synth.setCurrentPlaybackSampleRate (sampleRate);
}
void prepareToPlay (int samplesPerBlockExpected,
double sampleRate)
{
m_sampleRate = sampleRate;
m_synth.setCurrentPlaybackSampleRate (sampleRate);
}
MetronomeImp (void const* audioData, int dataBytes)
: m_sampleRate (44100)
, m_tempo (120)
, m_phase (0)
, m_active (false)
{
m_synth.setNoteStealingEnabled (true);
setTickSample (audioData, dataBytes);
}
//==============================================================================
SynthAudioSource ()
{
// add some voices to our synth, to play the sounds..
for (int i = 4; --i >= 0;)
{
synth.addVoice (new SamplerVoice()); // and these ones play the sampled sounds
}
// and add some sounds for them to play...
setUsingSampledSound();
}
void getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill)
{
// the synth always adds its output to the audio buffer, so we have to clear it
// first..
bufferToFill.clearActiveBufferRegion();
// fill a midi buffer with incoming messages from the midi input.
MidiBuffer incomingMidi;
midiCollector.removeNextBlockOfMessages (incomingMidi, bufferToFill.numSamples);
// and now get the synth to process the midi events and generate its output.
synth.renderNextBlock (*bufferToFill.buffer, incomingMidi, 0, bufferToFill.numSamples);
}
void setUsingSampledSound()
{
synth.clearSounds();
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.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 getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill)
{
// the synth always adds its output to the audio buffer, so we have to clear it
// first..
bufferToFill.clearActiveBufferRegion();
// fill a midi buffer with incoming messages from the midi input.
MidiBuffer incomingMidi;
midiCollector.removeNextBlockOfMessages (incomingMidi, bufferToFill.numSamples);
// pass these messages to the keyboard state so that it can update the component
// to show on-screen which keys are being pressed on the physical midi keyboard.
// This call will also add midi messages to the buffer which were generated by
// the mouse-clicking on the on-screen keyboard.
keyboardState.processNextMidiBuffer (incomingMidi, 0, bufferToFill.numSamples, true);
// and now get the synth to process the midi events and generate its output.
synth.renderNextBlock (*bufferToFill.buffer, incomingMidi, 0, bufferToFill.numSamples);
}
void getNextAudioBlock (AudioSourceChannelInfo const& bufferToFill)
{
int const numSamples = bufferToFill.numSamples;
// the synth always adds its output
//bufferToFill.clearActiveBufferRegion();
m_midi.clear ();
if (m_active)
{
double const samplesPerBeat = m_sampleRate * 60 / m_tempo;
// Adjust phase so the beat is on or after the beginning of the output
double beat;
if (m_phase > 0)
beat = 1 - m_phase;
else
beat = 0 - m_phase;
// Set notes in midi buffer
for (;;beat += 1)
{
// Calc beat pos
int pos = static_cast <int> (beat * samplesPerBeat);
if (pos < numSamples)
{
m_midi.addEvent (MidiMessage::noteOn (1, 84, 1.f), pos);
}
else
{
break;
}
}
}
m_synth.renderNextBlock (*bufferToFill.buffer,
m_midi,
0,
bufferToFill.numSamples);
}
void setUsingSineWaveSound()
{
synth.clearSounds();
synth.addSound (new SineWaveSound());
}
