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(http://i.cnblogs.com/Files.aspx下载类库)
1.1Form1.csusing 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.csnamespace 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);
}
}
}
}