C#.NET2005实现一个流媒体播放器2007-04-05 16:38用C#.NET2005实现一个流媒体播放器，感觉还是不错的，就是调用了Windows 中的一个动态连接库——Quarz.dll。

我写的是一个DirectShow多媒体播放器。

支持目前为止的大部分格式。

代码共享一下：using System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using QuartzTypeLib;//这个就是Quarz.dll转换后的Dll文件namespace myMedia{public partial class Form1 : Form{public Form1(){InitializeComponent();}// private ponentModel.IContainer components;private const int WM_APP = 0x8000;private const int WM_GRAPHNOTIEY = 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;enum MadiaStatus { None, Stopped, Paused, Running };private MadiaStatus m_CurrentStatus = MadiaStatus.None;private void CleanUp(){if (m_objMediaControl != null){m_objMediaControl.Stop();}m_CurrentStatus = MadiaStatus.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_objBasicAudio != null) m_objBasicAudio = null; if (m_objFilterGraph != null) m_objFilterGraph = null; }private void Open_Dialog(object sender, System.EventArgs e) {OpenFileDialog openFileDialog = new OpenFileDialog(); openFileDialog.Filter = "MediaFiles|*.mpg;*.avi;*.wma;*.mov;*.mav;*.mp2;*.mp3;*.rm;*.rmvb|AllFiles|*.*";if (DialogResult.OK == openFileDialog.ShowDialog()){CleanUp();m_objFilterGraph = new FilgraphManager();m_objFilterGraph.RenderFile(openFileDialog.FileNa me);try{m_objBasicAudio = m_objFilterGraph as IBasicAudio;m_objVideoWindow = m_objFilterGraph as IVideoWindow;m_objVideoWindow.Owner = (int)panel1.Handle; m_objVideoWindow.WindowStyle = WS_CHILD |WS_CLIPCHILDREN;m_objVideoWindow.SetWindowPosition(panel1.Cli entRectangle.Left, panel1.ClientRectangle.Top,panel1.ClientRectangle.Width, panel1.ClientRectangle.Height);}catch (Exception ex){MessageBox.Show("该文件没有图象信息！");m_objVideoWindow = null;}m_objMediaEvent = m_objFilterGraph as IMediaEvent; m_objMediaEventEx = m_objFilterGraph as IMediaEventEx;m_objMediaPosition = m_objFilterGraph as IMediaPosition;m_objMediaControl = m_objFilterGraph as IMediaControl;this.Text = "DirectShow - [" +openFileDialog.FileName + "]";m_objMediaControl.Run();m_CurrentStatus = MadiaStatus.Running;}}private void UpdateToolBar()//用了一个toolStrip{switch (m_CurrentStatus){case MadiaStatus.None:toolStripButton1.Enabled = true;toolStripButton2.Enabled = false;toolStripButton3.Enabled = false;toolStripButton4.Enabled = false;toolStripButton5.Enabled = true;break;case MadiaStatus.Paused:toolStripButton1.Enabled = false;toolStripButton2.Enabled = true;toolStripButton3.Enabled = false;toolStripButton4.Enabled = true;toolStripButton5.Enabled = true;break;case MadiaStatus.Running:toolStripButton1.Enabled = false;toolStripButton2.Enabled = false;toolStripButton3.Enabled = true;toolStripButton4.Enabled = true;toolStripButton5.Enabled = true;break;case MadiaStatus.Stopped:toolStripButton1.Enabled = true;toolStripButton2.Enabled = false;toolStripButton3.Enabled = false;toolStripButton4.Enabled = false;toolStripButton5.Enabled = true;break;}}private void ExitWin(object sender, System.EventArgs e) {this.Close();}private void toolStripButton1_Click(object sender, EventArgs e){Open_Dialog(sender, e);UpdateToolBar();}private void toolStripButton2_Click(object sender, EventArgs e){m_objMediaControl.Run();m_CurrentStatus = MadiaStatus.Running;UpdateToolBar();}private void toolStripButton3_Click(object sender, EventArgs e){m_objMediaControl.Pause();m_CurrentStatus = MadiaStatus.Paused;UpdateToolBar();}private void toolStripButton4_Click(object sender, EventArgs e){m_objMediaPosition.CurrentPosition = 0;m_CurrentStatus = MadiaStatus.Stopped;CleanUp();UpdateToolBar();}private void toolStripButton5_Click(object sender, EventArgs e){ExitWin(sender, e);}private void Form1_SizeChanged(object sender, EventArgs e) {panel1.Size = Form1.ActiveForm.Size;if (m_objVideoWindow != null){m_objVideoWindow.SetWindowPosition(panel1.ClientR ectangle.Left, panel1.ClientRectangle.Top,panel1.ClientRectangle.Width, panel1.ClientRectangle.Height);}}private void Form1_Load(object sender, EventArgs e){this.Text = "我的制作——流媒体播放器";UpdateToolBar();}}。