/****************************************************************************
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?SnapShot
{
????///?
?Summary?description?for?MainForm.?

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

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

????????private?IFilterGraph2?m_FilterGraph?=?null;

????????//?Used?to?snap?picture?on?Still?pin
????????private?IAMVideoControl?m_VidControl?=?null;
????????private?IPin?m_pinStill?=?null;

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

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

????????private?bool?m_WantOne?=?false;

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

????????private?int?m_videoWidth;
????????private?int?m_videoHeight;
????????private?int?m_stride;

????????///?
?buffer?for?bitmap?data.??Always?release?by?caller

????????private?IntPtr?m_ipBuffer?=?IntPtr.Zero;

#if?DEBUG
????????//?Allow?you?to?“Connect?to?remote?graph“?from?GraphEdit
????????DsROTEntry?m_rot?=?null;
#endif
????????#endregion

????????#region?APIs
????????[DllImport（“Kernel32.dll“?EntryPoint?=?“RtlMoveMemory“）]
????????private?static?extern?void?CopyMemory（IntPtr?Destination?IntPtr?Source?[MarshalAs（UnmanagedType.U4）]?int?Length）;
????????#endregion

????????//?Zero?based?device?index?and?device?params?and?output?window
????????public?Capture（int?iDeviceNum?int?iWidth?int?iHeight?short?iBPP?Control?hControl）
????????{
????????????DsDevice[]?capDevices;

????????????//?Get?the?collection?of?video?devices
????????????capDevices?=?DsDevice.GetDevicesOfCat（FilterCategory.VideoInputDevice）;

????????????if?（iDeviceNum?+?1?>?capDevices.Length）
????????????{
????????????????throw?new?Exception（“No?video?capture?devices?found?at?that?index!“）;
????????????}

????????????try
????????????{
????????????????//?Set?up?the?capture?graph
????????????????SetupGraph（capDevices[iDeviceNum]?iWidth?iHeight?iBPP?hControl）;

????????????????//?tell?the?callback?to?ignore?new?images
????????????????m_PictureReady?=?new?ManualResetEvent（false）;
????????????}
????????????catch
????????????{
????????????????Dispose（）;
????????????????throw;
????????????}
????????}

????????///?
?release?everyt

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????187??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\App.config

?????文件?????312320??2016-07-08?20:24??DirectShowDxSnap\WindowsFormsApplication1\bin\Debug\DirectShowLib-2005.dll

?????文件??????16896??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe

?????文件????????187??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe.config

?????文件??????32256??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb

?????文件??????23168??2019-04-30?10:09??DirectShowDxSnap\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe

?????文件????????187??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.config

?????文件????????490??2010-03-17?22:39??DirectShowDxSnap\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.manifest

?????文件??????18864??2019-04-30?09:12??DirectShowDxSnap\WindowsFormsApplication1\Capture.cs

?????文件???????3983??2019-04-29?23:13??DirectShowDxSnap\WindowsFormsApplication1\DirectShowDxSnap.csproj

?????文件?????312320??2016-07-08?20:24??DirectShowDxSnap\WindowsFormsApplication1\DirectShowLib-2005.dll

?????文件???????6899??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\Form1.cs

?????文件???????4617??2019-04-30?09:15??DirectShowDxSnap\WindowsFormsApplication1\Form1.Designer.cs

?????文件???????5817??2019-04-30?09:53??DirectShowDxSnap\WindowsFormsApplication1\Form1.resx

?????文件????????865??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件???????7096??2019-04-30?09:03??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件????????879??2019-04-30?10:09??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\DirectShowDxSnap.csproj.FileListAbsolute.txt

?????文件????????977??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\DirectShowDxSnap.csproj.GenerateResource.Cache

?????文件????????180??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\SnapShot.Form1.resources

?????文件??????????0??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs

?????文件??????????0??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs

?????文件??????????0??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs

?????文件???????1162??2019-04-30?09:02??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csproj.FileListAbsolute.txt

?????文件????????977??2019-04-30?09:01??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csproj.GenerateResource.Cache

?????文件???????6691??2019-04-29?23:13??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csprojResolveAssemblyReference.cache

?????文件??????16896??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.exe

?????文件??????32256??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.pdb

?????文件????????180??2019-04-30?10:06??DirectShowDxSnap\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Properties.Resources.resources

?????文件????????520??2019-04-29?23:13??DirectShowDxSnap\WindowsFormsApplication1\Program.cs

?????文件???????1372??2019-04-29?23:06??DirectShowDxSnap\WindowsFormsApplication1\Properties\AssemblyInfo.cs

............此處省略19個文件信息