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.csusing 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); } } }}