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小记一下DirectX里的Video和Audio

原本是DX里的一个例子，我觉得还可以，就COPY出来，想改改看。结果让我大失所望。
最简单要求，就是对音频文件和视频文件可以定位查找，本来它的Video和Audio类都提供了Seek方法，但它们根本不能工作，每次Seek后，都回到0的位置上。后来用Reflector来看它的源代码，结果也是不尽人意，很多底层的代码没有办法反射出来。特别是DX里的一些接口，根本无法查看。最后也只好先暂停了。
本来还想着，要是DX在.Net下封装的比较好的话，我就可以少用C＋＋的COM组件了，直接用C＃来写组件也方便多了。没想到MS的托管DX确实还不够完善，我看可能要等以后的版本了。不过它的MediaPlay的SDK还是不错的，有机会也看看。

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using Microsoft.DirectX;

using Microsoft.DirectX.AudioVideoPlayback;

namespace Webb.DirectX.Debug2

{

/// <summary>

/// Summary description for Form1.

/// </summary>

public class AVPlayer : System.Windows.Forms.Form

{

private string filterText = "Video Files (*.avi; *.qt; *.mov; *.mpg; *.mpeg; *.m1v; *.wmv)|*.avi; *.qt; *.mov; *.mpg; *.mpeg; *.m1v; *.wmv|" +

"Audio files (*.wav; *.mpa; *.mp2; *.mp3; *.au; *.aif; *.aiff; *.snd; *.wma)|*.wav; *.mpa; *.mp2; *.mp3; *.au; *.aif; *.aiff; *.snd; *.wma|" +

"MIDI Files (*.mid, *.midi, *.rmi)|*.mid; *.midi; *.rmi|" +

"Image Files (*.jpg, *.bmp, *.gif, *.tga)|*.jpg; *.bmp; *.gif; *.tga|" +

"All Files (*.*)|*.*";

private Video ourVideo = null;

private Audio ourAudio = null;

Winforms variables

public AVPlayer()

{

// Required for Windows Form Designer support

InitializeComponent();

OpenFile();

}

private bool _IsVideo = false;

/// <summary>

/// Clean up any resources being used.

/// </summary>

protected override void Dispose( bool disposing )

{

CleanupObjects();

if( disposing )

{

if (components != null)

{

components.Dispose();

}

base.Dispose( disposing );

}

Windows Form Designer generated code#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.mnuMain = new System.Windows.Forms.MainMenu();

this.mnuFile = new System.Windows.Forms.MenuItem();

this.mnuOpen = new System.Windows.Forms.MenuItem();

this.menuItem3 = new System.Windows.Forms.MenuItem();

this.mnuExit = new System.Windows.Forms.MenuItem();

this.menuItem1 = new System.Windows.Forms.MenuItem();

this.mnuPlay = new System.Windows.Forms.MenuItem();

this.mnuStop = new System.Windows.Forms.MenuItem();

this.mnuPause = new System.Windows.Forms.MenuItem();

this.menuItem2 = new System.Windows.Forms.MenuItem();

this.mnuFull = new System.Windows.Forms.MenuItem();

this.ofdOpen = new System.Windows.Forms.OpenFileDialog();

this.toolBar1 = new System.Windows.Forms.ToolBar();

this.toolBarButton1 = new System.Windows.Forms.ToolBarButton();

this.toolBarButton2 = new System.Windows.Forms.ToolBarButton();

this.toolBarButton3 = new System.Windows.Forms.ToolBarButton();

this.toolBarButton4 = new System.Windows.Forms.ToolBarButton();

this.toolBarButton5 = new System.Windows.Forms.ToolBarButton();

this.SuspendLayout();

// mnuMain

this.mnuMain.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {

this.mnuFile,

this.menuItem1});

// mnuFile

this.mnuFile.Index = 0;

this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {

this.mnuOpen,

this.menuItem3,

this.mnuExit});

this.mnuFile.Text = "&File";

// mnuOpen

this.mnuOpen.Index = 0;

this.mnuOpen.Shortcut = System.Windows.Forms.Shortcut.CtrlO;

this.mnuOpen.Text = "&Open Clip";

this.mnuOpen.Click += new System.EventHandler(this.mnuOpen_Click);

// menuItem3

this.menuItem3.Index = 1;

this.menuItem3.Text = "-";

// mnuExit

this.mnuExit.Index = 2;

this.mnuExit.Text = "E&xit";

this.mnuExit.Click += new System.EventHandler(this.mnuExit_Click);

// menuItem1

this.menuItem1.Index = 1;

this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {

this.mnuPlay,

this.mnuStop,

this.mnuPause,

this.menuItem2,

this.mnuFull});

this.menuItem1.Text = "&Control";

// mnuPlay

this.mnuPlay.Index = 0;

this.mnuPlay.Shortcut = System.Windows.Forms.Shortcut.CtrlP;

this.mnuPlay.Text = "&Play";

this.mnuPlay.Click += new System.EventHandler(this.mnuPlay_Click);

// mnuStop

this.mnuStop.Index = 1;

this.mnuStop.Shortcut = System.Windows.Forms.Shortcut.CtrlS;

this.mnuStop.Text = "&Stop";

this.mnuStop.Click += new System.EventHandler(this.mnuStop_Click);

// mnuPause

this.mnuPause.Index = 2;

this.mnuPause.Shortcut = System.Windows.Forms.Shortcut.CtrlA;

this.mnuPause.Text = "P&ause";

this.mnuPause.Click += new System.EventHandler(this.mnuPause_Click);

// menuItem2

this.menuItem2.Index = 3;

this.menuItem2.Text = "-";

// mnuFull

this.mnuFull.Index = 4;

this.mnuFull.Text = "Toggle Fu&llscreen\t<Alt-Enter>";

this.mnuFull.Click += new System.EventHandler(this.mnuFull_Click);

// toolBar1

this.toolBar1.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {

this.toolBarButton1,

this.toolBarButton2,

this.toolBarButton3,

this.toolBarButton4,

this.toolBarButton5});

this.toolBar1.DropDownArrows = true;

this.toolBar1.Location = new System.Drawing.Point(0, 0);

this.toolBar1.Name = "toolBar1";

this.toolBar1.ShowToolTips = true;

this.toolBar1.Size = new System.Drawing.Size(536, 42);

this.toolBar1.TabIndex = 0;

this.toolBar1.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.toolBar1_ButtonClick);

// toolBarButton1

this.toolBarButton1.Text = "Play";

// toolBarButton2

this.toolBarButton2.Text = "Stop";

// toolBarButton3

this.toolBarButton3.Text = "End";

// toolBarButton4

this.toolBarButton4.Text = "Begin";

// toolBarButton5

this.toolBarButton5.Text = "Next";

// AVPlayer

this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

this.ClientSize = new System.Drawing.Size(536, 305);

this.Controls.Add(this.toolBar1);

this.Menu = this.mnuMain;

this.Name = "AVPlayer";

this.Text = "Audio Video Player";

this.ResumeLayout(false);

}

#endregion

private void CleanupObjects()

{

if (ourVideo != null)

ourVideo.Dispose();

if (ourAudio != null)

ourAudio.Dispose();

}

private void OpenFile()

{

// if ((ofdOpen.InitialDirectory == null) || (ofdOpen.InitialDirectory == string.Empty))

// ofdOpen.InitialDirectory = DXUtil.SdkMediaPath;

ofdOpen.Filter = filterText;

ofdOpen.Title = "Open media file";

ofdOpen.ShowDialog(this);

// Now let's try to open this file

if ((ofdOpen.FileName != null) && (ofdOpen.FileName != string.Empty))

{

try

{

if (ourVideo == null)

{

// First try to open this as a video file

ourVideo = new Video(ofdOpen.FileName);

ourVideo.Ending += new System.EventHandler(this.ClipEnded);

ourVideo.Owner = this;

// Start playing now

ourVideo.Play();

this._IsVideo = true;

}

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小记一下DirectX里的Video和Audio