private void DirectSound_Start(object sender, EventArgs e)
{
soundStream = new SoundStream(File.OpenRead(loadFilePath));
WaveFormat format = soundStream.Format;
AudioBuffer buffer = new AudioBuffer
{
Stream = soundStream.ToDataStream(),
AudioBytes = (int)soundStream.Length,
Flags = BufferFlags.EndOfStream
};
soundStream.Close();
sourceVoice = new SourceVoice(xAudio2, format, true);
sourceVoice.SubmitSourceBuffer(buffer, soundStream.DecodedPacketsInfo);
sourceVoice.Start();
if (directSoundEffect == 0)
{
SharpDX.XAPO.Fx.Echo effectEcho = new SharpDX.XAPO.Fx.Echo(xAudio2);
EffectDescriptor effectDescriptor = new EffectDescriptor(effectEcho);
sourceVoice.SetEffectChain(effectDescriptor);
sourceVoice.EnableEffect(0);
}
else if (directSoundEffect == 1)
{
SharpDX.XAPO.Fx.Reverb effectReverb = new SharpDX.XAPO.Fx.Reverb(xAudio2);
EffectDescriptor effectDescriptor = new EffectDescriptor(effectReverb);
sourceVoice.SetEffectChain(effectDescriptor);
sourceVoice.EnableEffect(0);
}
}
public PlayForm()
{
InitializeComponent();
// Initalize XAudio2
xaudio2 = new XAudio2(XAudio2Flags.None, ProcessorSpecifier.DefaultProcessor);
masteringVoice = new MasteringVoice(xaudio2);
var waveFormat = new WaveFormat(44100, 32, 2);
sourceVoice = new SourceVoice(xaudio2, waveFormat);
int bufferSize = waveFormat.ConvertLatencyToByteSize(60000);
DataStream dataStream = new DataStream(bufferSize, true, true);
// Prepare the initial sound to modulate
int numberOfSamples = bufferSize / waveFormat.BlockAlign;
for (int i = 0; i < numberOfSamples; i++)
{
float value = (float)(Math.Cos(2 * Math.PI * 220.0 * i / waveFormat.SampleRate) * 0.5);
dataStream.Write(value);
dataStream.Write(value);
}
dataStream.Position = 0;
audioBuffer = new AudioBuffer
{
Stream = dataStream,
Flags = BufferFlags.EndOfStream,
AudioBytes = bufferSize,
LoopBegin = 0,
LoopLength = numberOfSamples,
LoopCount = AudioBuffer.LoopInfinite
};
// Set the effect on the source
ModulatorEffect = new ModulatorEffect();
modulatorDescriptor = new EffectDescriptor(ModulatorEffect);
reverb = new Reverb();
effectDescriptor = new EffectDescriptor(reverb);
//sourceVoice.SetEffectChain(modulatorDescriptor, effectDescriptor);
sourceVoice.SetEffectChain(modulatorDescriptor);
//sourceVoice.EnableEffect(0);
this.Closed += new EventHandler(PlayForm_Closed);
}
/// <summary>
/// SharpDX XAudio2 sample. Plays a generated sound with some reverb.
/// </summary>
static void Main(string[] args)
{
var xaudio2 = new XAudio2();
var masteringVoice = new MasteringVoice(xaudio2);
var waveFormat = new WaveFormat(44100, 32, 2);
var sourceVoice = new SourceVoice(xaudio2, waveFormat);
int bufferSize = waveFormat.ConvertLatencyToByteSize(60000);
var dataStream = new DataStream(bufferSize, true, true);
int numberOfSamples = bufferSize / waveFormat.BlockAlign;
for (int i = 0; i < numberOfSamples; i++)
{
// cos(2 * PI * (220 + 4 * cos(2 * PI * 10 * t)) * t) * 0.5
double vibrato = Math.Cos(2 * Math.PI * 10.0 * i / waveFormat.SampleRate);
float value = (float)(Math.Cos(2 * Math.PI * (220.0 + 4.0 * vibrato) * i / waveFormat.SampleRate) * 0.5);
dataStream.Write(value);
dataStream.Write(value);
}
dataStream.Position = 0;
var audioBuffer = new AudioBuffer {
Stream = dataStream, Flags = BufferFlags.EndOfStream, AudioBytes = bufferSize
};
var reverb = new Reverb(xaudio2);
var effectDescriptor = new EffectDescriptor(reverb);
sourceVoice.SetEffectChain(effectDescriptor);
sourceVoice.EnableEffect(0);
sourceVoice.SubmitSourceBuffer(audioBuffer, null);
sourceVoice.Start();
Console.WriteLine("Play sound");
for (int i = 0; i < 60; i++)
{
Console.Write(".");
Console.Out.Flush();
Thread.Sleep(1000);
}
}