recording sound from microphone and playing it

[TaLz]

hello,
i'm trying to record sound from microphone and play it.
i'm using directSound.
i get an error while trying to copy the data from the capture buffer to a secondary buffer...problem with the stream.
when i try to play for the first time i only here a "bump" sound.
well thanks in advance...
here is the code:


using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using Microsoft.DirectX;
using System.IO;
using Microsoft.DirectX.DirectSound;

// Avoid name collision with System.Buffer
using Buffer = Microsoft.DirectX.DirectSound.Buffer;

namespace Sound
{
public class Sound : System.Windows.Forms.Form
{
// private fields
private Device device;
private Capture capture;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private Buffer buffer;
private BufferDescription bufferDesc;
private CaptureBuffer captureBuffer;
private WaveFormat waveFormat;
private CaptureBufferDescription captureBuffDesc;
private MemoryStream stream;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
private byte[] streamBuffer;

public Sound()
{
InitializeComponent();
// Set up DirectSound
CreateDevice();
// Load the sound
CreateWaveFormat();
CreateBufferDescription();
CreateBuffer();

// Set the cooperative level
SetCooperativeLevel();

CreateCapture();
CreateCapureDescription();
CreateCaptureBuffer();
CreateStreamBuffer();
CreateStream();
}

private void CreateDevice()
{
device = new Device();
}

private void CreateBuffer()
{
buffer = new Buffer(bufferDesc, this.device);
}

private void CreateBufferDescription()
{
bufferDesc = new BufferDescription();
bufferDesc.Format = waveFormat;
bufferDesc.BufferBytes = 100000;
//bufferDesc.ControlPositionNotify = true;
bufferDesc.ControlFrequency = true;
bufferDesc.ControlPan = true;
bufferDesc.ControlVolume = true;
}

private void SetCooperativeLevel()
{
device.SetCooperativeLevel(
this , // The window for the application
CooperativeLevel.Priority // The cooperative level
);
}

private void CreateWaveFormat()
{
waveFormat = new WaveFormat();
waveFormat.BitsPerSample = 8;
waveFormat.BlockAlign = 1;
waveFormat.Channels = 1;
waveFormat.AverageBytesPerSecond = 20500;
waveFormat.SamplesPerSecond = 20500;
waveFormat.FormatTag = WaveFormatTag.Pcm;
}

private void CreateCapture()
{
capture = new Capture();
}

private void CreateCapureDescription()
{
captureBuffDesc = new CaptureBufferDescription();
captureBuffDesc.BufferBytes = 100000;
captureBuffDesc.Format = this.waveFormat;
}

private void CreateCaptureBuffer()
{
captureBuffer = new CaptureBuffer(captureBuffDesc, capture);
}

private void CreateStream()
{
stream = new MemoryStream(streamBuffer);
}

private void CreateStreamBuffer()
{
streamBuffer = new byte[100000];
}



#region Windows Form Designer generated code
///<summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///</summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(48, 32);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(208, 23);
this.button1.TabIndex = 0;
this.button1.Text = "Play Sound";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(48, 72);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(208, 23);
this.button2.TabIndex = 1;
this.button2.Text = "Stop Sound";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(48, 136);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(208, 23);
this.button3.TabIndex = 2;
this.button3.Text = "Start Recording";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(48, 176);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(208, 23);
this.button4.TabIndex = 3;
this.button4.Text = "Stop Recording";
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// Game
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Name = "Sound";
this.Text = "Sound";
this.ResumeLayout(false);

}
#endregion

public static void Main ()
{
Sound s = new Sound();
s.Show();
Application.Run(s);
}

private void button1_Click( object sender, System.EventArgs e)
{
this.captureBuffer.Read(0, this.stream, 100000, LockFlag.None);
//i get an error here...
buffer.Write(0, this.stream, (int)this.stream.Length, LockFlag.None);
buffer.Play(0, BufferPlayFlags.Looping);
}

private void button2_Click(object sender, System.EventArgs e)
{
buffer.Stop();
}

private void button3_Click(object sender, System.EventArgs e)
{
this.captureBuffer.Start(true);
}

private void button4_Click(object sender, System.EventArgs e)
{
this.captureBuffer.Stop();
}
}
}

 

[LAleks]

Hi,

before putting the Capture Buffer into the Secondary Buffer try playing a simple Wav file with the Secondary Buffer.
It will init the stream header.

http://www.Dotnet-Project.Com