使用C#编写媒体播放器时,需要用到Microsoft的Directx提供的DirectShow组件.用该组件前需要先注册程序集QuartzTypeLib.dll.
1、用QuartzTypeLib.dll播放视频
1.1Form1.cs
using
System;
using
System.Windows.Forms;
using
QuartzTypeLib;
namespace
DirectShow
{
public
partial
class
Form1 : Form
{
public
Form1()
{
InitializeComponent();
}
//设置常量
const
int
WM_APP = 0x8000;
const
int
WM_GRAPHNOTIFY = WM_APP + 1;
const
int
EC_COMPLETE = 0x01;
const
int
WS_CHILD = 0x40000000;
const
int
WS_CLIPCHILDREN = 0x2000000;
FilgraphManager m_objFilterGraph =
null
;
IBasicAudio m_objBasicAudio =
null
;
IVideoWindow m_objVidwoWindow =
null
;
IMediaEvent m_objMediaEvent =
null
;
IMediaEventEx m_objMediaEventEx =
null
;
IMediaPosition m_objMediaPosition =
null
;
IMediaControl m_objMediaControl =
null
;
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;
}
}
catch
(Exception)
{
break
;
}
}
}
base
.WndProc(
ref
m);
}
private
void
Clear()
{
if
(m_objMediaControl !=
null
)
m_objMediaControl.Stop();
if
(m_objMediaEventEx !=
null
)
m_objMediaEventEx.SetNotifyWindow(0, 0, 0);
if
(m_objVidwoWindow !=
null
)
{
m_objVidwoWindow.Visible = 0;
m_objVidwoWindow.Owner = 0;
}
if
(m_objBasicAudio !=
null
) m_objBasicAudio =
null
;
if
(m_objFilterGraph !=
null
) m_objFilterGraph =
null
;
if
(m_objMediaControl !=
null
) m_objMediaControl =
null
;
if
(m_objMediaEvent !=
null
) m_objMediaEvent =
null
;
if
(m_objMediaPosition !=
null
) m_objMediaPosition =
null
;
if
(m_objVidwoWindow !=
null
) m_objVidwoWindow =
null
;
if
(m_objMediaEventEx !=
null
) m_objMediaEventEx =
null
;
this
.Text =
"多媒体播放器"
;
timer1.Enabled =
false
;
trackBar1.Value = 0;
}
private
void
button1_Click(
object
sender, EventArgs e)
{
OpenFileDialog openFile =
new
OpenFileDialog();
openFile.Filter =
"选择播放文件|*.mpg;*.avi;*.mov;*.wma;*.wav;*.mp3|All Files|*.*"
;
if
(DialogResult.OK == openFile.ShowDialog())
{
this
.Clear();
//清理正在播放的文件
m_objFilterGraph =
new
FilgraphManager();
try
{
m_objFilterGraph.RenderFile(openFile.FileName);
m_objBasicAudio = m_objFilterGraph
as
IBasicAudio;
//图象控制接口
m_objVidwoWindow = m_objFilterGraph
as
IVideoWindow;
//声音控制接口
m_objVidwoWindow.Owner = (
int
)
this
.Handle;
//设置窗口类型
m_objVidwoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
//设置播放容器
m_objVidwoWindow.SetWindowPosition(
this
.ClientRectangle.Left,
this
.ClientRectangle.Top,
this
.ClientRectangle.Width,
this
.ClientRectangle.Height - 60);
}
catch
{
//MessageBox.Show(ex.Message);
//当出错时,为音频文件,将视频对象清空
m_objVidwoWindow =
null
;
}
m_objMediaEvent = m_objFilterGraph
as
IMediaEvent;
//播放事件接口
m_objMediaEventEx = m_objFilterGraph
as
IMediaEventEx;
//扩展播放事件接口
m_objMediaEventEx.SetNotifyWindow((
int
)
this
.Handle, WM_GRAPHNOTIFY, 0);
m_objMediaPosition = m_objFilterGraph
as
IMediaPosition;
//播放位置和速度控制
m_objMediaControl = m_objFilterGraph
as
IMediaControl;
//用来控制流媒体播放控制接口
this
.Text = openFile.FileName +
"----"
+
this
.Text;
m_objMediaControl.Run();
//播放文件
try
{
trackBar1.LargeChange = 1;
trackBar1.Maximum = (
int
)m_objMediaPosition.Duration;
timer1.Enabled =
true
;
}
catch
{ }
}
}
private
void
button2_Click(
object
sender, EventArgs e)
{
//播放
if
(m_objMediaControl !=
null
)
m_objMediaControl.Run();
}
private
void
button3_Click(
object
sender, EventArgs e)
{
//暂停
m_objMediaControl.Pause();
}
private
void
button4_Click(
object
sender, EventArgs e)
{
//停止
m_objMediaControl.Stop();
m_objMediaPosition.CurrentPosition = 0;
this
.Clear();
}
private
void
button5_Click(
object
sender, EventArgs e)
{
//快退
if
(m_objMediaPosition.CurrentPosition >= 1)
m_objMediaPosition.CurrentPosition = m_objMediaPosition.CurrentPosition - 1;
else
m_objMediaPosition.CurrentPosition = 0;
}
private
void
button6_Click(
object
sender, EventArgs e)
{
//快进
m_objMediaPosition.CurrentPosition = m_objMediaPosition.CurrentPosition + 1;
}
private
void
timer1_Tick(
object
sender, EventArgs e)
{
//显示文件播放的进度
trackBar1.Value = (
int
)m_objMediaPosition.CurrentPosition;
}
private
void
trackBar1_Scroll(
object
sender, EventArgs e)
{
//根据滚动进度条,来播放文件
m_objMediaPosition.CurrentPosition = trackBar1.Value;
}
}
}
1.2 Form1.Designer.cs
namespace
DirectShow
{
partial
class
Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private
System.ComponentModel.IContainer components =
null
;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源,为 true;否则为 false。</param>
protected
override
void
Dispose(
bool
disposing)
{
if
(disposing && (components !=
null
))
{
components.Dispose();
}
base
.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <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();
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
.button5 =
new
System.Windows.Forms.Button();
this
.button6 =
new
System.Windows.Forms.Button();
this
.trackBar1 =
new
System.Windows.Forms.TrackBar();
this
.timer1 =
new
System.Windows.Forms.Timer(
this
.components);
((System.ComponentModel.ISupportInitialize)(
this
.trackBar1)).BeginInit();
this
.SuspendLayout();
//
// button1
//
this
.button1.Location =
new
System.Drawing.Point(7, 254);
this
.button1.Name =
"button1"
;
this
.button1.Size =
new
System.Drawing.Size(75, 23);
this
.button1.TabIndex = 1;
this
.button1.Text =
"打开"
;
this
.button1.UseVisualStyleBackColor =
true
;
this
.button1.Click +=
new
System.EventHandler(
this
.button1_Click);
//
// button2
//
this
.button2.Location =
new
System.Drawing.Point(88, 254);
this
.button2.Name =
"button2"
;
this
.button2.Size =
new
System.Drawing.Size(75, 23);
this
.button2.TabIndex = 2;
this
.button2.Text =
"播放"
;
this
.button2.UseVisualStyleBackColor =
true
;
this
.button2.Click +=
new
System.EventHandler(
this
.button2_Click);
//
// button3
//
this
.button3.Location =
new
System.Drawing.Point(331, 254);
this
.button3.Name =
"button3"
;
this
.button3.Size =
new
System.Drawing.Size(75, 23);
this
.button3.TabIndex = 3;
this
.button3.Text =
"暂停"
;
this
.button3.UseVisualStyleBackColor =
true
;
this
.button3.Click +=
new
System.EventHandler(
this
.button3_Click);
//
// button4
//
this
.button4.Location =
new
System.Drawing.Point(412, 254);
this
.button4.Name =
"button4"
;
this
.button4.Size =
new
System.Drawing.Size(75, 23);
this
.button4.TabIndex = 4;
this
.button4.Text =
"停止"
;
this
.button4.UseVisualStyleBackColor =
true
;
this
.button4.Click +=
new
System.EventHandler(
this
.button4_Click);
//
// button5
//
this
.button5.Location =
new
System.Drawing.Point(169, 254);
this
.button5.Name =
"button5"
;
this
.button5.Size =
new
System.Drawing.Size(75, 23);
this
.button5.TabIndex = 5;
this
.button5.Text =
"<<快退"
;
this
.button5.UseVisualStyleBackColor =
true
;
this
.button5.Click +=
new
System.EventHandler(
this
.button5_Click);
//
// button6
//
this
.button6.Location =
new
System.Drawing.Point(250, 254);
this
.button6.Name =
"button6"
;
this
.button6.Size =
new
System.Drawing.Size(75, 23);
this
.button6.TabIndex = 5;
this
.button6.Text =
">>快进"
;
this
.button6.UseVisualStyleBackColor =
true
;
this
.button6.Click +=
new
System.EventHandler(
this
.button6_Click);
//
// trackBar1
//
this
.trackBar1.Cursor = System.Windows.Forms.Cursors.NoMoveHoriz;
this
.trackBar1.LargeChange = 1;
this
.trackBar1.Location =
new
System.Drawing.Point(1, 210);
this
.trackBar1.Maximum = 50;
this
.trackBar1.Name =
"trackBar1"
;
this
.trackBar1.Size =
new
System.Drawing.Size(494, 45);
this
.trackBar1.TabIndex = 6;
this
.trackBar1.TickStyle = System.Windows.Forms.TickStyle.Both;
this
.trackBar1.Scroll +=
new
System.EventHandler(
this
.trackBar1_Scroll);
//
// timer1
//
this
.timer1.Interval = 500;
this
.timer1.Tick +=
new
System.EventHandler(
this
.timer1_Tick);
//
// Form1
//
this
.AutoScaleDimensions =
new
System.Drawing.SizeF(6F, 12F);
this
.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this
.ClientSize =
new
System.Drawing.Size(496, 280);
this
.Controls.Add(
this
.button6);
this
.Controls.Add(
this
.button5);
this
.Controls.Add(
this
.button4);
this
.Controls.Add(
this
.button3);
this
.Controls.Add(
this
.button2);
this
.Controls.Add(
this
.button1);
this
.Controls.Add(
this
.trackBar1);
this
.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
this
.Name =
"Form1"
;
this
.Text =
"多媒体播放器"
;
((System.ComponentModel.ISupportInitialize)(
this
.trackBar1)).EndInit();
this
.ResumeLayout(
false
);
this
.PerformLayout();
}
#endregion
private
System.Windows.Forms.Button button1;
private
System.Windows.Forms.Button button2;
private
System.Windows.Forms.Button button3;
private
System.Windows.Forms.Button button4;
private
System.Windows.Forms.Button button5;
private
System.Windows.Forms.Button button6;
private
System.Windows.Forms.TrackBar trackBar1;
private
System.Windows.Forms.Timer timer1;
}
}
1.3
Program.cs
using
System;
using
System.Windows.Forms;
namespace
DirectShow
{
static
class
Program
{
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static
void
Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(
false
);
Application.Run(
new
Form1());
}
}
}
2、播放选定的文件
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Text;
using
System.Windows.Forms;
namespace
MediaApp
{
public
partial
class
Form1 : Form
{
private
const
int
WS_CHILD = 0x40000000;
private
const
int
WS_CLIPCHILDREN = 0x2000000;
private
QuartzTypeLib.IMediaControl MyControl =
null
;
private
QuartzTypeLib.IVideoWindow MyWindow =
null
;
public
Form1()
{
InitializeComponent();
}
private
void
button1_Click(
object
sender, EventArgs e)
{
OpenFileDialog MyDialog =
new
OpenFileDialog();
MyDialog.Filter =
"Media Files|*.mpg;*.avi;*.wma;*.mov;*.wav;*.mp2;*.mp3|All Files|*.*"
;
if
(MyDialog.ShowDialog() == DialogResult.OK)
{
try
{
QuartzTypeLib.FilgraphManager MyManager =
new
QuartzTypeLib.FilgraphManager();
if
(MyControl !=
null
) MyControl.Stop();
//如果已经播放过,则先停止
MyManager.RenderFile(MyDialog.FileName);
//加载音频、视频文件
MyWindow = (QuartzTypeLib.IVideoWindow)MyManager;
try
//音频文件不需要用pictureBox1,所以会报错
{
MyWindow.Owner = (
int
)pictureBox1.Handle;
MyWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
MyWindow.SetWindowPosition(pictureBox1.ClientRectangle.Left,
pictureBox1.ClientRectangle.Top,pictureBox1.ClientRectangle.Width,pictureBox1.ClientRectangle.Height);
}
catch
{ }
MyControl = (QuartzTypeLib.IMediaControl)MyManager;
MyControl.Run();
}
catch
(Exception Mye)
{
MessageBox.Show(
this
,Mye.Message,
"信息提示"
,MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}
}
}
}
2、播放指定的文件
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Text;
using
System.Windows.Forms;
namespace
WindowsFormsApplication1
{
public
partial
class
Form1 : Form
{
private
const
int
WS_CHILD = 0x40000000;
private
const
int
WS_CLIPCHILDREN = 0x2000000;
private
QuartzTypeLib.IMediaControl MyControl =
null
;
private
QuartzTypeLib.IVideoWindow MyWindow =
null
;
public
Form1()
{
InitializeComponent();
}
private
void
Form1_Load(
object
sender, EventArgs e)
{
try
{
QuartzTypeLib.FilgraphManager MyManager =
new
QuartzTypeLib.FilgraphManager();
if
(MyControl !=
null
) MyControl.Stop();
//如果已经播放过,则先停止
MyManager.RenderFile(
"Ending.mpg"
);
//加载音频、视频文件
MyWindow = (QuartzTypeLib.IVideoWindow)MyManager;
try
//音频文件不需要用pictureBox1,所以会报错
{
MyWindow.Owner = (
int
)pictureBox1.Handle;
MyWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
MyWindow.SetWindowPosition(pictureBox1.ClientRectangle.Left,
pictureBox1.ClientRectangle.Top, pictureBox1.ClientRectangle.Width, pictureBox1.ClientRectangle.Height);
}
catch
{ }
MyControl = (QuartzTypeLib.IMediaControl)MyManager;
MyControl.Run();
}
catch
(Exception Mye)
{
MessageBox.Show(
this
, Mye.Message,
"信息提示"
, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
}