最簡單要求，就是對音頻文件和視頻文件可以定位查找，本來它的Video和Audio類都提供了Seek方法，但它們根本不能工作，每次Seek後，都回到0的位置上。後來用Reflector來看它的源代碼，結果也是不盡人意，很多底層的代碼沒有辦法反射出來。特別是DX裡的一些接口，根本無法查看。最後也只好先暫停了。
本來還想著，要是DX在.Net下封裝的比較好的話，我就可以少用C＋＋的COM組件了，直接用C＃來寫組件也方便多了。沒想到MS的托管DX確實還不夠完善，我看可能要等以後的版本了。不過它的MediaPlay的SDK還是不錯的，有機會也看看。
[csharp]
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#region Winforms variables
/**//// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
private System.Windows.Forms.MainMenu mnuMain;
private System.Windows.Forms.OpenFileDialog ofdOpen;
private System.Windows.Forms.MenuItem menuItem3;
private System.Windows.Forms.MenuItem mnuFile;
private System.Windows.Forms.MenuItem mnuOpen;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem mnuPlay;
private System.Windows.Forms.MenuItem mnuStop;
private System.Windows.Forms.MenuItem mnuPause;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem mnuFull;
private System.Windows.Forms.ToolBar toolBar1;
private System.Windows.Forms.ToolBarButton toolBarButton1;
private System.Windows.Forms.ToolBarButton toolBarButton2;
private System.Windows.Forms.ToolBarButton toolBarButton3;
private System.Windows.Forms.ToolBarButton toolBarButton4;
private System.Windows.Forms.ToolBarButton toolBarButton5;
private System.Windows.Forms.MenuItem mnuExit;
#endregion
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;
}
else
{
ourVideo.Open(ofdOpen.FileName, true);
}
}
catch
{
try
{
// opening this as a video file failed.. Maybe it's audio only?
ourAudio = new Audio(ofdOpen.FileName);
ourAudio.Ending += new System.EventHandler(this.ClipEnded);
// Start playing now
ourAudio.Play();
this._IsVideo = false;
}
catch
{
MessageBox.Show("This file could not be opened.", "Invalid file.", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
}
private void ClipEnded(object sender, System.EventArgs e)
{
// The clip has ended, stop and restart it
// if (ourVideo != null)
// {
// ourVideo.Stop();
// ourVideo.Play();
// }
// else
// {
// if (ourAudio != null)
// {
// ourAudio.Stop();
// ourAudio.Play();
// }
// }
}
private void mnuOpen_Click(object sender, System.EventArgs e)
{
this.OpenFile();
}
private void mnuPlay_Click(object sender, System.EventArgs e)
{
if (ourVideo != null)
ourVideo.Play();
else
{
if (ourAudio != null)
ourAudio.Play();
}
}
private void mnuStop_Click(object sender, System.EventArgs e)
{
if (ourVideo != null)
ourVideo.Stop();
else
{
if (ourAudio != null)
ourAudio.Stop();
}
}
private void mnuPause_Click(object sender, System.EventArgs e)
{
if (ourVideo != null)
ourVideo.Pause();
else
{
if (ourAudio != null)
ourAudio.Pause();
}
}
private void mnuExit_Click(object sender, System.EventArgs e)
{
this.Dispose();
}
private void mnuFull_Click(object sender, System.EventArgs e)
{
if (ourVideo != null)
ourVideo.Fullscreen = !ourVideo.Fullscreen;
}
protected override void OnKeyDown(System.Windows.Forms.KeyEventArgs e)
{
if ( (e.Alt) && (e.KeyCode == System.Windows.Forms.Keys.Return))
{
mnuFull_Click(mnuFull, null);
}
// Allow the control to handle the keystroke now
base.OnKeyDown(e);
}
private void toolBar1_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
{
switch(e.Button.Text)
{
case "Play":
if(this._IsVideo)
{
this.ourVideo.Play();
}
else
{
this.ourAudio.Play();
}
break;
case "End":
if(_IsVideo)
{
double m_length = this.ourVideo.Duration;
try
{
if(this.ourVideo.SeekingCaps.CanSeekForwards)
{
double m_result = this.ourVideo.SeekCurrentPosition(5,SeekPositionFlags.AbsolutePositioning);
MessageBox.Show(m_result.ToString());
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
this.ourVideo.Pause();
}
else
{
double m_length = this.ourAudio.Duration;
double m_result = this.ourAudio.SeekCurrentPosition(5,SeekPositionFlags.AbsolutePositioning);
this.ourAudio.Pause();
}
break;
case "Begin":
if(_IsVideo)
{
this.ourVideo.SeekCurrentPosition(0,SeekPositionFlags.AbsolutePositioning);
this.ourVideo.Pause();
}
else
{
this.ourAudio.SeekCurrentPosition(0,SeekPositionFlags.AbsolutePositioning);
this.ourAudio.Pause();
}
break;
case "Stop":
if(_IsVideo)
{
this.ourVideo.Pause();
}
else
{
this.ourAudio.Pause();
}
break;
case "Next":
if(_IsVideo)
{
this.ourVideo.SeekCurrentPosition(5,SeekPositionFlags.IncrementalPositioning);
//this.ourVideo.Pause();
}
else
{
this.ourAudio.SeekCurrentPosition(5,SeekPositionFlags.IncrementalPositioning);
//this.ourAudio.Pause();
}
break;
}
}
}
}
