/****************************************************************************
While?the?underlying?libraries?are?covered?by?LGPL?this?sample?is?released?
as?public?domain.??It?is?distributed?in?the?hope?that?it?will?be?useful?but?
WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of?MERCHANTABILITY?
or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??
*****************************************************************************/

using?System;
using?System.Drawing;
using?System.Drawing.Imaging;
using?System.Collections;
using?System.Runtime.InteropServices;
using?System.Threading;
using?System.Diagnostics;
using?System.Windows.Forms;

using?DirectShowLib;


namespace?NetPeerCon
{
????///?
?Summary?description?for?MainForm.?

????internal?class?Capture?:?ISampleGrabberCB?IDisposable
????{
????????#region?Member?variables

????????///?
?graph?builder?interface.?

????????private?IFilterGraph2?m_FilterGraph?=?null;
????????private?IMediaControl?m_mediaCtrl?=?null;

????????///?
?so?we?can?wait?for?the?async?job?to?finish?

????????private?ManualResetEvent?m_PictureReady?=?null;

????????///?
?Set?by?async?routine?when?it?captures?an?image?

????????private?volatile?bool?m_bGotOne?=?false;

????????///?
?Indicates?the?status?of?the?graph?

????????private?bool?m_bRunning?=?false;

????????///?
?Dimensions?of?the?image?calculated?once?in?constructor.?

????????private?IntPtr?m_handle?=?IntPtr.Zero;
????????private?int?m_videoWidth;
????????private?int?m_videoHeight;
????????private?int?m_stride;
????????public?int?m_Dropped?=?0;

????????#endregion

????????#region?API

????????[DllImport（“Kernel32.dll“?EntryPoint?=?“RtlMoveMemory“）]
????????private?static?extern?void?CopyMemory（IntPtr?Destination?IntPtr?Source?int?Length）;

????????#endregion

????????///?
?Use?capture?device?zero?default?frame?rate?and?size

????????public?Capture（）
????????{
????????????_Capture（0?0?0?0）;
????????}
????????///?
?Use?specified?capture?device?default?frame?rate?and?size

????????public?Capture（int?iDeviceNum）
????????{
????????????_Capture（iDeviceNum?0?0?0）;
????????}
????????///?
?Use?specified?capture?device?specified?frame?rate?and?default?size

????????public?Capture（int?iDeviceNum?int?iframeRate）
????????{
????????????_Capture（iDeviceNum?iframeRate?0?0）;
????????}
????????///?
?Use?specified?capture?device?specified?frame?rate?and?size

????????public?Capture（int?iDeviceNum?int?iframeRate?int?iWidth?int?iHeight）
????????{
????????????_Capture（iDeviceNum?iframeRate?iWidth?iHeight）;
????????}
????????///?
?release?everything.?

????????public?void?Dispose（）
????????{
????????????CloseInterfaces（）;
????????????if?（m_PictureReady?!=?null）
????????????{
????????????????m_PictureReady.C

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-04-19?06:00??NetPeerCon\
?????目錄???????????0??2011-04-19?11:45??NetPeerCon\NetPeerCon\
?????文件?????????872??2011-04-19?06:00??NetPeerCon\NetPeerCon.sln
?????文件???????26112??2011-04-19?12:24??NetPeerCon\NetPeerCon.suo
?????目錄???????????0??2011-04-19?09:58??NetPeerCon\NetPeerCon\bin\
?????目錄???????????0??2011-04-19?12:16??NetPeerCon\NetPeerCon\bin\Debug\
?????文件??????282624??2007-07-29?17:15??NetPeerCon\NetPeerCon\bin\Debug\DirectShowLib-2005.dll
?????文件??????104960??2011-04-19?12:15??NetPeerCon\NetPeerCon\bin\Debug\NetPeerCon.exe
?????文件???????73216??2011-04-19?12:15??NetPeerCon\NetPeerCon\bin\Debug\NetPeerCon.pdb
?????文件???????11600??2011-04-19?11:53??NetPeerCon\NetPeerCon\bin\Debug\NetPeerCon.vshost.exe
?????文件?????????490??2010-03-17?22:39??NetPeerCon\NetPeerCon\bin\Debug\NetPeerCon.vshost.exe.manifest
?????目錄???????????0??2011-04-19?11:47??NetPeerCon\NetPeerCon\bin\Release\
?????文件??????282624??2007-07-29?17:15??NetPeerCon\NetPeerCon\bin\Release\DirectShowLib-2005.dll
?????文件??????102912??2011-04-19?11:47??NetPeerCon\NetPeerCon\bin\Release\NetPeerCon.exe
?????文件???????56832??2011-04-19?11:47??NetPeerCon\NetPeerCon\bin\Release\NetPeerCon.pdb
?????文件???????11600??2011-04-19?11:47??NetPeerCon\NetPeerCon\bin\Release\NetPeerCon.vshost.exe
?????文件?????????490??2010-03-17?22:39??NetPeerCon\NetPeerCon\bin\Release\NetPeerCon.vshost.exe.manifest
?????文件???????14707??2011-04-19?11:47??NetPeerCon\NetPeerCon\Capture.cs
?????文件????????6736??2011-04-19?12:17??NetPeerCon\NetPeerCon\Form1.cs
?????文件????????9712??2011-04-19?12:06??NetPeerCon\NetPeerCon\Form1.Designer.cs
?????文件??????119336??2011-04-19?12:06??NetPeerCon\NetPeerCon\Form1.resx
?????文件????????3119??2007-01-28?02:39??NetPeerCon\NetPeerCon\icony.JPG
?????文件???????75242??2007-01-28?02:38??NetPeerCon\NetPeerCon\ip.jpg
?????文件????????4558??2011-04-19?11:47??NetPeerCon\NetPeerCon\NetPeerCon.csproj
?????目錄???????????0??2011-04-19?06:00??NetPeerCon\NetPeerCon\obj\
?????目錄???????????0??2011-04-19?11:47??NetPeerCon\NetPeerCon\obj\x86\
?????目錄???????????0??2011-04-19?12:15??NetPeerCon\NetPeerCon\obj\x86\Debug\
?????文件????????2152??2011-04-19?06:00??NetPeerCon\NetPeerCon\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????6711??2011-04-19?12:15??NetPeerCon\NetPeerCon\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件?????????616??2011-04-19?12:06??NetPeerCon\NetPeerCon\obj\x86\Debug\GenerateResource.read.1.tlog
?????文件?????????670??2011-04-19?12:06??NetPeerCon\NetPeerCon\obj\x86\Debug\GenerateResource.write.1.tlog
............此處省略29個文件信息