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使用.NET实现视频播放

使用DirectX技术实现播放，需要引用系统的 C:\WINNT\system32\quartz.dll 
是从CodeProject上看来的。前一阵看到有人需要这样的代码，所以贴出来共享一下。 

using System; 
using System.Collections; 
using System.ComponentModel; 
using System.Drawing; 
using System.Data; 
using System.Windows.Forms; 
using QuartzTypeLib; 

namespace Greystar.FrameWork.ToolKits 
{ 
/// <summary> 
/// FrmTV 的摘要说明。 
/// </summary> 
public class FrmTV : System.Windows.Forms.UserControl 
{ 
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.Panel panel1; 
private System.Windows.Forms.ImageList imageList1; 
private System.Windows.Forms.Timer timer1; 
private System.Windows.Forms.ToolBarButton toolBarButton4; 
private System.ComponentModel.IContainer components; 

private const int WM_APP = 0x8000; 
private const int WM_GRAPHNOTIFY = WM_APP + 1; 
private const int EC_COMPLETE = 0x01; 
private const int WS_CHILD = 0x40000000; 
private const int WS_CLIPCHILDREN = 0x2000000; 

private FilgraphManager m_objFilterGraph = null; 
private IBasicAudio m_objBasicAudio = null; 
private IVideoWindow m_objVideoWindow = null; 
private IMediaEvent m_objMediaEvent = null; 
private IMediaEventEx m_objMediaEventEx = null; 
private IMediaPosition m_objMediaPosition = null; 
private IMediaControl m_objMediaControl = null; 
private System.Windows.Forms.StatusBar statusBar1; 
private System.Windows.Forms.StatusBarPanel statusBarPanel1; 
private System.Windows.Forms.StatusBarPanel statusBarPanel2; 
private System.Windows.Forms.StatusBarPanel statusBarPanel3; 

enum MediaStatus { None, Stopped, Paused, Running }; 

private MediaStatus m_CurrentStatus = MediaStatus.None; 

public FrmTV() 
{ 
// 该调用是 Windows.Forms 窗体设计器所必需的。 
InitializeComponent(); 

// TODO: 在 InitializeComponent 调用后添加任何初始化 

} 
public FrmTV(EnvDTE._DTE dte,string workpath) 
{ 
InitializeComponent(); 
this.mDTE=dte; 
this.mWorkPath=workpath; 
} 
private _DTE mDTE=null; 
public _DTE DTE 
{ 
set 
{ 
mDTE=value; 
} 

get 
{ 
return mDTE; 
} 
} 

//工作目录 
private string mWorkPath=null; 
public string WorkPath 
{ 
set 
{ 
this.mWorkPath=value; 
} 
} 
/// <summary> 
/// 清理所有正在使用的资源。 
/// </summary> 
protected override void Dispose( bool disposing ) 
{ 
if( disposing ) 
{ 
if(components != null) 
{ 
components.Dispose(); 
} 
} 
base.Dispose( disposing ); 
} 

#region 组件设计器生成的代码 
/// <summary> 
/// 设计器支持所需的方法 - 不要使用代码编辑器 
/// 修改此方法的内容。 
/// </summary> 
private void InitializeComponent() 
{ 
this.components = new System.ComponentModel.Container(); 
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(FrmTV)); 
this.toolBar1 = new System.Windows.Forms.ToolBar(); 
this.toolBarButton4 = new System.Windows.Forms.ToolBarButton(); 
this.toolBarButton1 = new System.Windows.Forms.ToolBarButton(); 
this.toolBarButton2 = new System.Windows.Forms.ToolBarButton(); 
this.toolBarButton3 = new System.Windows.Forms.ToolBarButton(); 
this.imageList1 = new System.Windows.Forms.ImageList(this.components); 
this.panel1 = new System.Windows.Forms.Panel(); 
this.timer1 = new System.Windows.Forms.Timer(this.components); 
this.statusBar1 = new System.Windows.Forms.StatusBar(); 
this.statusBarPanel1 = new System.Windows.Forms.StatusBarPanel(); 
this.statusBarPanel2 = new System.Windows.Forms.StatusBarPanel(); 
this.statusBarPanel3 = new System.Windows.Forms.StatusBarPanel(); 
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).BeginInit(); 
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel2)).BeginInit(); 
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel3)).BeginInit(); 
this.SuspendLayout(); 
// 
// toolBar1 
// 
this.toolBar1.Appearance = System.Windows.Forms.ToolBarAppearance.Flat; 
this.toolBar1.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] { 
this.toolBarButton4, 
this.toolBarButton1, 
this.toolBarButton2, 
this.toolBarButton3}); 
this.toolBar1.DropDownArrows = true; 
this.toolBar1.ImageList = this.imageList1; 
this.toolBar1.Location = new System.Drawing.Point(0, 0); 
this.toolBar1.Name = "toolBar1"; 
this.toolBar1.ShowToolTips = true; 
this.toolBar1.Size = new System.Drawing.Size(288, 28); 
this.toolBar1.TabIndex = 0; 
this.toolBar1.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.toolBar1_ButtonClick); 
// 
// toolBarButton4 
// 
this.toolBarButton4.ImageIndex = 3; 
// 
// toolBarButton1 
// 
this.toolBarButton1.Enabled = false; 
this.toolBarButton1.ImageIndex = 0; 
// 
// toolBarButton2 
// 
this.toolBarButton2.Enabled = false; 
this.toolBarButton2.ImageIndex = 1; 
// 
// toolBarButton3 
// 
this.toolBarButton3.Enabled = false; 
this.toolBarButton3.ImageIndex = 2; 
// 
// imageList1 
// 
this.imageList1.ColorDepth = System.Windows.Forms.ColorDepth.Depth24Bit; 
this.imageList1.ImageSize = new System.Drawing.Size(16, 16); 
this.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageList1.ImageStream"))); 
this.imageList1.TransparentColor = System.Drawing.Color.Red; 
// 
// panel1 
// 
this.panel1.BackColor = System.Drawing.Color.Black; 
this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
this.panel1.Dock = System.Windows.Forms.DockStyle.Fill; 
this.panel1.Location = new System.Drawing.Point(0, 28); 
this.panel1.Name = "panel1"; 
this.panel1.Size = new System.Drawing.Size(288, 252); 
this.panel1.TabIndex = 4; 
// 
// timer1 
// 
this.timer1.Enabled = true; 
this.timer1.Tick += new System.EventHandler(this.timer1_Tick); 
// 
// statusBar1 
// 
this.statusBar1.Location = new System.Drawing.Point(0, 260); 
this.statusBar1.Name = "statusBar1"; 
this.statusBar1.Panels.AddRange(new System.Windows.Forms.StatusBarPanel[] { 
this.statusBarPanel1, 
this.statusBarPanel2, 
this.statusBarPanel3}); 
this.statusBar1.ShowPanels = true; 
this.statusBar1.Size = new System.Drawing.Size(288, 20); 
this.statusBar1.TabIndex = 5; 
// 
// statusBarPanel1 
// 
this.statusBarPanel1.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Spring; 
this.statusBarPanel1.BorderStyle = System.Windows.Forms.StatusBarPanelBorderStyle.None; 
this.statusBarPanel1.Text = "准备"; 
this.statusBarPanel1.Width = 144; 
// 
// statusBarPanel2 
// 
this.statusBarPanel2.Alignment = System.Windows.Forms.HorizontalAlignment.Center; 
this.statusBarPanel2.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Contents; 
this.statusBarPanel2.Text = "00:00:00"; 
this.statusBarPanel2.Width = 64; 
// 
// statusBarPanel3 
// 
this.statusBarPanel3.Alignment = System.Windows.Forms.HorizontalAlignment.Center; 
this.statusBarPanel3.AutoSize = System.Windows.Forms.StatusBarPanelAutoSize.Contents; 
this.statusBarPanel3.Text = "00:00:00"; 
this.statusBarPanel3.Width = 64; 
// 
// FrmTV 
// 
this.BackColor = System.Drawing.SystemColors.Control; 
this.Controls.Add(this.statusBar1); 
this.Controls.Add(this.panel1); 
this.Controls.Add(this.toolBar1); 
this.Name = "FrmTV"; 
this.Size = new System.Drawing.Size(288, 280); 
this.SizeChanged += new System.EventHandler(this.FrmTV_SizeChanged); 
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).EndInit(); 
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel2)).EndInit(); 
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel3)).EndInit(); 
this.ResumeLayout(false); 

} 
#endregion 

private void CleanUp() 
{ 
if (m_objMediaControl != null) 
m_objMediaControl.Stop(); 

m_CurrentStatus = MediaStatus.Stopped; 

if (m_objMediaEventEx != null) 
m_objMediaEventEx.SetNotifyWindow(0, 0, 0); 

if (m_objVideoWindow != null) 
{ 
m_objVideoWindow.Visible = 0; 
m_objVideoWindow.Owner = 0; 
} 

if (m_objMediaControl != null) m_objMediaControl = null; 
if (m_objMediaPosition != null) m_objMediaPosition = null; 
if (m_objMediaEventEx != null) m_objMediaEventEx = null; 
if (m_objMediaEvent != null) m_objMediaEvent = null; 
if (m_objVideoWindow != null) m_objVideoWindow = null; 
if (m_objBasicAudio != null) m_objBasicAudio = null; 
if (m_objFilterGraph != null) m_objFilterGraph = null; 
} 

private void toolBar1_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e) 
{ 
switch(toolBar1.Buttons.IndexOf(e.Button)) 
{ 
case 0: 
{ 
#region 打开文件 
OpenFileDialog openFileDialog = new OpenFileDialog(); 
openFileDialog.Filter = "Media Files|*.mpg;*.avi;*.wma;*.mov;*.wav;*.mp2;*.mp3|All Files|*.*"; 

if (DialogResult.OK == openFileDialog.ShowDialog()) 
{ 
CleanUp(); 

m_objFilterGraph = new FilgraphManager(); 
m_objFilterGraph.RenderFile(openFileDialog.FileName); 

m_objBasicAudio = m_objFilterGraph as IBasicAudio; 

try 
{ 
m_objVideoWindow = m_objFilterGraph as IVideoWindow; 
m_objVideoWindow.Owner = (int) panel1.Handle; 
m_objVideoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN; 
m_objVideoWindow.SetWindowPosition(panel1.ClientRectangle.Left, 
panel1.ClientRectangle.Top, 
panel1.ClientRectangle.Width, 
panel1.ClientRectangle.Height); 
} 
catch (Exception) 
{ 
m_objVideoWindow = null; 
} 

m_objMediaEvent = m_objFilterGraph as IMediaEvent; 

m_objMediaEventEx = m_objFilterGraph as IMediaEventEx; 
m_objMediaEventEx.SetNotifyWindow((int) this.Handle,WM_GRAPHNOTIFY, 0); 

m_objMediaPosition = m_objFilterGraph as IMediaPosition; 

m_objMediaControl = m_objFilterGraph as IMediaControl; 

this.Text = "DirectShow - [" + openFileDialog.FileName + "]"; 

m_objMediaControl.Run(); 
m_CurrentStatus = MediaStatus.Running; 

} 
break; 
#endregion 

} 
case 1: 
{ 
m_objMediaControl.Run(); 
m_CurrentStatus = MediaStatus.Running; 
break; 
} 

case 2: 
{ 
m_objMediaControl.Pause(); 
m_CurrentStatus = MediaStatus.Paused; 
break; 
} 

case 3: 
{ 
m_objMediaControl.Stop(); 
m_objMediaPosition.CurrentPosition = 0; 
m_CurrentStatus = MediaStatus.Stopped; 
break; 
} 
} 

UpdateStatusBar(); 
UpdateToolBar(); 
} 

private void FrmTV_SizeChanged(object sender, System.EventArgs e) 
{ 
if (m_objVideoWindow != null) 
{ 
m_objVideoWindow.SetWindowPosition(panel1.ClientRectangle.Left, 
panel1.ClientRectangle.Top, 
panel1.ClientRectangle.Width, 
panel1.ClientRectangle.Height); 
} 
} 

private void timer1_Tick(object sender, System.EventArgs e) 
{ 

if (m_CurrentStatus == MediaStatus.Running) 
{ 
UpdateStatusBar(); 
} 
} 
protected override void WndProc( ref Message m) 
{ 
if (m.Msg == WM_GRAPHNOTIFY) 
{ 
int lEventCode; 
int lParam1, lParam2; 

while (true) 
{ 
try 
{ 
m_objMediaEventEx.GetEvent(out lEventCode, 
out lParam1, 
out lParam2, 
0); 

m_objMediaEventEx.FreeEventParams(lEventCode, lParam1, lParam2); 

if (lEventCode == EC_COMPLETE) 
{ 
m_objMediaControl.Stop(); 
m_objMediaPosition.CurrentPosition = 0; 
m_CurrentStatus = MediaStatus.Stopped; 
UpdateStatusBar(); 
UpdateToolBar(); 
} 
} 
catch (Exception) 
{ 
break; 
} 
} 
} 

base.WndProc(ref m); 
} 

private void UpdateStatusBar() 
{ 
switch (m_CurrentStatus) 
{ 
case MediaStatus.None : statusBarPanel1.Text = "停止"; break; 
case MediaStatus.Paused : statusBarPanel1.Text = "暂停 "; break; 
case MediaStatus.Running: statusBarPanel1.Text = "播放"; break; 
case MediaStatus.Stopped: statusBarPanel1.Text = "停止"; break; 
} 

if (m_objMediaPosition != null) 
{ 
int s = (int) m_objMediaPosition.Duration; 
int h = s / 3600; 
int m = (s - (h * 3600)) / 60; 
s = s - (h * 3600 + m * 60); 

statusBarPanel2.Text = String.Format("{0:D2}:{1:D2}:{2:D2}", h, m, s); 

s = (int) m_objMediaPosition.CurrentPosition; 
h = s / 3600; 
m = (s - (h * 3600)) / 60; 
s = s - (h * 3600 + m * 60); 

statusBarPanel3.Text = String.Format("{0:D2}:{1:D2}:{2:D2}", h, m, s); 
} 
else 
{ 
statusBarPanel2.Text = "00:00:00"; 
statusBarPanel3.Text = "00:00:00"; 
} 
} 

private void UpdateToolBar() 
{ 
switch (m_CurrentStatus) 
{ 
case MediaStatus.None : toolBarButton1.Enabled = false; 
toolBarButton2.Enabled = false; 
toolBarButton3.Enabled = false; 
break; 

case MediaStatus.Paused : toolBarButton1.Enabled = true; 
toolBarButton2.Enabled = false; 
toolBarButton3.Enabled = true; 
break; 

case MediaStatus.Running: toolBarButton1.Enabled = false; 
toolBarButton2.Enabled = true; 
toolBarButton3.Enabled = true; 
break; 

case MediaStatus.Stopped: toolBarButton1.Enabled = true; 
toolBarButton2.Enabled = false; 
toolBarButton3.Enabled = false; 
break; 
} 
} 


} 
} 
 

悦读

道可道，非常道；名可名，非常名。 无名，天地之始，有名，万物之母。 故常无欲，以观其妙，常有欲，以观其徼。 此两者，同出而异名，同谓之玄，玄之又玄，众妙之门。

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