WaveStream CSharp (31K)
WaveStream VB (35K)
27 Jun 2004
First Posted
vbAccelerator - Contents of code file: PassThrough\frmWaveStreamSample.cs
This file is part of the download WaveStream CSharp, which is described in the article WaveStreamReader and WaveStreamWriter.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using vbAccelerator.Audio.WaveStream;
namespace PassThrough
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label lblInput;
private System.Windows.Forms.TextBox txtSourceFile;
private System.Windows.Forms.Button btnOpenSource;
private System.Windows.Forms.Button btnSave;
private System.Windows.Forms.GroupBox grpProperties;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.TextBox txtLength;
private System.Windows.Forms.TextBox txtChannels;
private System.Windows.Forms.TextBox txtBitsPerSample;
private System.Windows.Forms.TextBox txtFrequency;
private System.Windows.Forms.ProgressBar prgSave;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#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.lblInput = new System.Windows.Forms.Label();
this.txtSourceFile = new System.Windows.Forms.TextBox();
this.btnOpenSource = new System.Windows.Forms.Button();
this.btnSave = new System.Windows.Forms.Button();
this.grpProperties = new System.Windows.Forms.GroupBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.label4 = new System.Windows.Forms.Label();
this.txtLength = new System.Windows.Forms.TextBox();
this.txtChannels = new System.Windows.Forms.TextBox();
this.txtBitsPerSample = new System.Windows.Forms.TextBox();
this.txtFrequency = new System.Windows.Forms.TextBox();
this.prgSave = new System.Windows.Forms.ProgressBar();
this.grpProperties.SuspendLayout();
this.SuspendLayout();
//
// lblInput
//
this.lblInput.Location = new System.Drawing.Point(8, 8);
this.lblInput.Name = "lblInput";
this.lblInput.Size = new System.Drawing.Size(80, 20);
this.lblInput.TabIndex = 0;
this.lblInput.Text = "&Source File:";
//
// txtSourceFile
//
this.txtSourceFile.Location = new System.Drawing.Point(84, 4);
this.txtSourceFile.Name = "txtSourceFile";
this.txtSourceFile.Size = new System.Drawing.Size(276, 21);
this.txtSourceFile.TabIndex = 1;
this.txtSourceFile.Text = "";
//
// btnOpenSource
//
this.btnOpenSource.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnOpenSource.Location = new System.Drawing.Point(84, 32);
this.btnOpenSource.Name = "btnOpenSource";
this.btnOpenSource.Size = new System.Drawing.Size(80, 24);
this.btnOpenSource.TabIndex = 2;
this.btnOpenSource.Text = "&Open...";
this.btnOpenSource.Click += new
System.EventHandler(this.btnOpenSource_Click);
//
// btnSave
//
this.btnSave.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.btnSave.Location = new System.Drawing.Point(84, 224);
this.btnSave.Name = "btnSave";
this.btnSave.Size = new System.Drawing.Size(80, 24);
this.btnSave.TabIndex = 5;
this.btnSave.Text = "&Save...";
this.btnSave.Click += new System.EventHandler(this.btnSave_Click);
//
// grpProperties
//
this.grpProperties.Controls.AddRange(new
System.Windows.Forms.Control[] {
this.txtFrequency,
this.txtBitsPerSample,
this.txtChannels,
this.txtLength,
this.label4,
this.label3,
this.label2,
this.label1});
this.grpProperties.FlatStyle = System.Windows.Forms.FlatStyle.System;
this.grpProperties.Location = new System.Drawing.Point(84, 64);
this.grpProperties.Name = "grpProperties";
this.grpProperties.Size = new System.Drawing.Size(276, 152);
this.grpProperties.TabIndex = 6;
this.grpProperties.TabStop = false;
this.grpProperties.Text = "&Properties";
//
// label1
//
this.label1.Location = new System.Drawing.Point(8, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(80, 20);
this.label1.TabIndex = 1;
this.label1.Text = "&Length";
//
// label2
//
this.label2.Location = new System.Drawing.Point(8, 48);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(80, 20);
this.label2.TabIndex = 2;
this.label2.Text = "&Channels";
//
// label3
//
this.label3.Location = new System.Drawing.Point(8, 76);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(80, 20);
this.label3.TabIndex = 3;
this.label3.Text = "&Bits/Sample";
//
// label4
//
this.label4.Location = new System.Drawing.Point(8, 100);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(80, 20);
this.label4.TabIndex = 4;
this.label4.Text = "&Frequency";
//
// txtLength
//
this.txtLength.Location = new System.Drawing.Point(92, 20);
this.txtLength.Name = "txtLength";
this.txtLength.ReadOnly = true;
this.txtLength.Size = new System.Drawing.Size(180, 21);
this.txtLength.TabIndex = 5;
this.txtLength.Text = "";
//
// txtChannels
//
this.txtChannels.Location = new System.Drawing.Point(92, 48);
this.txtChannels.Name = "txtChannels";
this.txtChannels.ReadOnly = true;
this.txtChannels.Size = new System.Drawing.Size(180, 21);
this.txtChannels.TabIndex = 6;
this.txtChannels.Text = "";
//
// txtBitsPerSample
//
this.txtBitsPerSample.Location = new System.Drawing.Point(92, 72);
this.txtBitsPerSample.Name = "txtBitsPerSample";
this.txtBitsPerSample.ReadOnly = true;
this.txtBitsPerSample.Size = new System.Drawing.Size(180, 21);
this.txtBitsPerSample.TabIndex = 7;
this.txtBitsPerSample.Text = "";
//
// txtFrequency
//
this.txtFrequency.Location = new System.Drawing.Point(92, 96);
this.txtFrequency.Name = "txtFrequency";
this.txtFrequency.ReadOnly = true;
this.txtFrequency.Size = new System.Drawing.Size(180, 21);
this.txtFrequency.TabIndex = 8;
this.txtFrequency.Text = "";
//
// prgSave
//
this.prgSave.Location = new System.Drawing.Point(172, 224);
this.prgSave.Name = "prgSave";
this.prgSave.Size = new System.Drawing.Size(184, 24);
this.prgSave.TabIndex = 7;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(368, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.prgSave,
this.grpProperties,
this.btnSave,
this.btnOpenSource,
this.txtSourceFile,
this.lblInput});
this.Font = new System.Drawing.Font("Tahoma", 8.25F,
System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point,
((System.Byte)(0)));
this.Name = "Form1";
this.Text = "WaveStream Sample";
this.grpProperties.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void btnOpenSource_Click(object sender, System.EventArgs e)
{
using (OpenFileDialog f = new OpenFileDialog())
{
f.Filter = "Wave Files (*.WAV)|*.WAV|All Files (*.*)|*.*";
f.DefaultExt = "WAV";
if (f.ShowDialog(this) == DialogResult.OK)
{
OpenFile(f.FileName);
}
}
}
private void OpenFile(string fileName)
{
txtSourceFile.Text = "";
btnSave.Enabled = false;
WaveStreamReader reader = null;
try
{
reader = new WaveStreamReader(fileName);
double lengthSeconds = ((reader.Channels * reader.BitsPerSample) /
8);
lengthSeconds = reader.Length / (reader.SamplingFrequency *
lengthSeconds);
txtLength.Text = lengthSeconds.ToString("#0.00") + "s";
txtChannels.Text = reader.Channels.ToString();
txtBitsPerSample.Text = reader.BitsPerSample.ToString();
txtFrequency.Text = reader.SamplingFrequency.ToString();
txtSourceFile.Text = fileName;
btnSave.Enabled = true;
}
catch (Exception ex)
{
MessageBox.Show(this, String.Format("Could not open file {0}: {1}",
fileName, ex),
Text, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
if (reader != null)
{
reader.Dispose();
}
}
}
private void btnSave_Click(object sender, System.EventArgs e)
{
using (SaveFileDialog f = new SaveFileDialog())
{
f.Filter = "Wave Files (*.WAV)|*.WAV|All Files (*.*)|*.*";
f.DefaultExt = "WAV";
if (f.ShowDialog(this) == DialogResult.OK)
{
SaveFile(f.FileName);
}
}
}
private void SaveFile(string fileName)
{
Enabled = false;
WaveStreamReader reader = null;
WaveStreamWriter writer = null;
try
{
reader = new WaveStreamReader(txtSourceFile.Text);
writer = new WaveStreamWriter(fileName,
reader.SamplingFrequency, reader.Channels, reader.BitsPerSample);
prgSave.Maximum = (int) reader.Length;
int readSize = 65536;
byte[] buffer = new byte[readSize];
int size = 0;
while ((size = reader.Read(buffer, 0, readSize)) > 0)
{
writer.Write(buffer, 0, readSize);
if (prgSave.Value + readSize < prgSave.Maximum)
{
prgSave.Value += readSize;
}
// better to multi-thread
Application.DoEvents();
}
}
catch (Exception ex)
{
MessageBox.Show(this, String.Format("Failed to save to file {0}:
{1}", fileName, ex),
Text, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
if (writer != null)
{
writer.Dispose();
}
if (reader != null)
{
reader.Dispose();
}
Enabled = true;
}
}
}
}
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