WebSVN - Projects - Blame - /MKLiveView/v1.0/Source/WebCamLib/WebCamLib.h

Rev	Author	Line No.	Line
2525	-	1	//*****************************************************************************************
		2	// File: WebCamLib.h
		3	// Project: WebcamLib
		4	// Author(s): John Conwell
		5	// Gary Caldwell
		6	//
		7	// Declares the webcam DirectShow wrapper used by TouchlessLib
		8	//*****************************************************************************************
		9
		10	#pragma once
		11
		12	using namespace System;
		13	using namespace System::Collections::Generic;
		14	using namespace System::Runtime::InteropServices;
		15
		16	namespace WebCamLib
		17	{
		18	/// <summary>
		19	/// Store webcam name, index
		20	/// </summary>
		21	public ref class CameraInfo
		22	{
		23	public:
		24	CameraInfo( int index, String^ name );
		25
		26	property int Index
		27	{
		28	int get();
		29	private: void set( int value );
		30	}
		31
		32	property String^ Name
		33	{
		34	String^ get();
		35	private: void set( String^ value );
		36	}
		37
		38	private:
		39	int index;
		40	String^ name;
		41	};
		42
		43	public enum class PropertyTypeMask : int
		44	{
		45	CameraControlPropertyMask = 0x01000,
		46	VideoProcAmpPropertyMask = 0x02000,
		47	};
		48
		49	// Source: https://msdn.microsoft.com/en-us/library/aa925325.aspx
		50	public enum class CameraControlProperty : int
		51	{
		52	Pan_degrees,
		53	Tilt_degrees,
		54	Roll_degrees,
		55	Zoom_mm,
		56	Exposure_lgSec,
		57	Iris_10f,
		58	FocalLength_mm,
		59	Flash,
		60	};
		61
		62	// Source: https://msdn.microsoft.com/en-us/library/aa920611.aspx
		63	public enum class VideoProcAmpProperty : int
		64	{
		65	Brightness,
		66	Contrast,
		67	Hue,
		68	Saturation,
		69	Sharpness,
		70	Gamma,
		71	ColorEnable,
		72	WhiteBalance,
		73	BacklightCompensation,
		74	Gain,
		75	};
		76
		77	public enum class CameraProperty : int
		78	{
		79	Pan_degrees = WebCamLib::CameraControlProperty::Pan_degrees \| PropertyTypeMask::CameraControlPropertyMask,
		80	Tilt_degrees = WebCamLib::CameraControlProperty::Tilt_degrees \| PropertyTypeMask::CameraControlPropertyMask,
		81	Roll_degrees = WebCamLib::CameraControlProperty::Roll_degrees \| PropertyTypeMask::CameraControlPropertyMask,
		82	Zoom_mm = WebCamLib::CameraControlProperty::Zoom_mm \| PropertyTypeMask::CameraControlPropertyMask,
		83	Exposure_lgSec = WebCamLib::CameraControlProperty::Exposure_lgSec \| PropertyTypeMask::CameraControlPropertyMask,
		84	Iris_10f = WebCamLib::CameraControlProperty::Iris_10f \| PropertyTypeMask::CameraControlPropertyMask,
		85	FocalLength_mm = WebCamLib::CameraControlProperty::FocalLength_mm \| PropertyTypeMask::CameraControlPropertyMask,
		86	Flash = WebCamLib::CameraControlProperty::Flash \| PropertyTypeMask::CameraControlPropertyMask,
		87	Brightness = WebCamLib::VideoProcAmpProperty::Brightness \| PropertyTypeMask::VideoProcAmpPropertyMask,
		88	Contrast = WebCamLib::VideoProcAmpProperty::Contrast \| PropertyTypeMask::VideoProcAmpPropertyMask,
		89	Hue = WebCamLib::VideoProcAmpProperty::Hue \| PropertyTypeMask::VideoProcAmpPropertyMask,
		90	Saturation = WebCamLib::VideoProcAmpProperty::Saturation \| PropertyTypeMask::VideoProcAmpPropertyMask,
		91	Sharpness = WebCamLib::VideoProcAmpProperty::Sharpness \| PropertyTypeMask::VideoProcAmpPropertyMask,
		92	Gamma = WebCamLib::VideoProcAmpProperty::Gamma \| PropertyTypeMask::VideoProcAmpPropertyMask,
		93	ColorEnable = WebCamLib::VideoProcAmpProperty::ColorEnable \| PropertyTypeMask::VideoProcAmpPropertyMask,
		94	WhiteBalance = WebCamLib::VideoProcAmpProperty::WhiteBalance \| PropertyTypeMask::VideoProcAmpPropertyMask,
		95	BacklightCompensation = WebCamLib::VideoProcAmpProperty::BacklightCompensation \| PropertyTypeMask::VideoProcAmpPropertyMask,
		96	Gain = WebCamLib::VideoProcAmpProperty::Gain \| PropertyTypeMask::VideoProcAmpPropertyMask,
		97	};
		98
		99	public ref class CameraPropertyCapabilities
		100	{
		101	public:
		102	CameraPropertyCapabilities( int cameraIndex, CameraProperty prop, bool isGetSupported, bool isSetSupported, bool isGetRangeSupported );
		103
		104	property int CameraIndex
		105	{
		106	int get();
		107	private: void set( int cameraIndex );
		108	}
		109
		110	property CameraProperty Property
		111	{
		112	CameraProperty get();
		113	private: void set( CameraProperty value );
		114	}
		115
		116	property bool IsGetSupported
		117	{
		118	bool get();
		119	private: void set( bool value );
		120	}
		121
		122	property bool IsSetSupported
		123	{
		124	bool get();
		125	private: void set( bool value );
		126	}
		127
		128	property bool IsGetRangeSupported
		129	{
		130	bool get();
		131	private: void set( bool value );
		132	}
		133
		134	property bool IsSupported
		135	{
		136	bool get();
		137	}
		138
		139	property bool IsFullySupported
		140	{
		141	bool get();
		142	}
		143
		144	private:
		145	int cameraIndex;
		146	CameraProperty prop;
		147	bool isGetSupported, isSetSupported, isGetRangeSupported;
		148	};
		149
		150	/// <summary>
		151	/// DirectShow wrapper around a web cam, used for image capture
		152	/// </summary>
		153	public ref class CameraMethods
		154	{
		155	public:
		156	/// <summary>
		157	/// Initializes information about all web cams connected to machine
		158	/// </summary>
		159	CameraMethods();
		160
		161	/// <summary>
		162	/// Delegate used by DirectShow to pass back captured images from webcam
		163	/// </summary>
		164	delegate void CaptureCallbackDelegate(
		165	int dwSize,
		166	[MarshalAsAttribute(UnmanagedType::LPArray, ArraySubType = UnmanagedType::I1, SizeParamIndex = 0)] array<System::Byte>^ abData);
		167
		168	/// <summary>
		169	/// Event callback to capture images from webcam
		170	/// </summary>
		171	event CaptureCallbackDelegate^ OnImageCapture;
		172
		173	/// <summary>
		174	/// Retrieve information about a specific camera
		175	/// Use the count property to determine valid indicies to pass in
		176	/// </summary>
		177	CameraInfo^ GetCameraInfo(int camIndex);
		178
		179	/// <summary>
		180	/// Start the camera associated with the input handle
		181	/// </summary>
		182	bool StartCamera(int camIndex, interior_ptr<int> width, interior_ptr<int> height, interior_ptr<int> bpp);
		183
		184	/// <summary>
		185	/// Start the camera associated with the input handle
		186	/// </summary>
		187	void StartCamera(int camIndex, interior_ptr<int> width, interior_ptr<int> height, interior_ptr<int> bpp, interior_ptr<bool> successful);
		188
		189	#pragma region Camera Property Support
		190	void IsPropertySupported( CameraProperty prop, interior_ptr<bool> result );
		191
		192	bool IsPropertySupported( CameraProperty prop );
		193
		194	void GetProperty( CameraProperty prop, bool isValue, interior_ptr<long> value, interior_ptr<bool> bAuto, interior_ptr<bool> successful );
		195
		196	bool GetProperty( CameraProperty prop, bool isValue, interior_ptr<long> value, interior_ptr<bool> bAuto );
		197
		198	void GetProperty_value( CameraProperty prop, interior_ptr<long> value, interior_ptr<bool> bAuto, interior_ptr<bool> successful );
		199
		200	bool GetProperty_value( CameraProperty prop, interior_ptr<long> value, interior_ptr<bool> bAuto );
		201
		202	void GetProperty_percentage( CameraProperty prop, interior_ptr<long> percentage, interior_ptr<bool> bAuto, interior_ptr<bool> successful);
		203
		204	bool GetProperty_percentage( CameraProperty prop, interior_ptr<long> percentage, interior_ptr<bool> bAuto );
		205
		206	void SetProperty( CameraProperty prop, bool isValue, long value, bool bAuto, interior_ptr<bool> successful );
		207
		208	bool SetProperty( CameraProperty prop, bool isValue, long value, bool bAuto );
		209
		210	void SetProperty_value( CameraProperty prop, long value, bool bAuto, interior_ptr<bool> successful );
		211
		212	bool SetProperty_value( CameraProperty prop, long value, bool bAuto );
		213
		214	void SetProperty_value( CameraProperty prop, long value, bool bAuto, bool throwValidationError, interior_ptr<bool> successful );
		215
		216	bool SetProperty_value( CameraProperty prop, long value, bool bAuto, bool throwValidationError );
		217
		218	void SetProperty_percentage( CameraProperty prop, long percentage, bool bAuto, interior_ptr<bool> successful );
		219
		220	bool SetProperty_percentage( CameraProperty prop, long percentage, bool bAuto );
		221
		222	void PropertyHasRange( CameraProperty prop, interior_ptr<bool> successful );
		223
		224	bool PropertyHasRange( CameraProperty prop );
		225
		226	void GetPropertyRange( CameraProperty prop, interior_ptr<long> min, interior_ptr<long> max, interior_ptr<long> steppingDelta, interior_ptr<long> defaults, interior_ptr<bool> bAuto, interior_ptr<bool> successful );
		227
		228	bool GetPropertyRange( CameraProperty prop, interior_ptr<long> min, interior_ptr<long> max, interior_ptr<long> steppingDelta, interior_ptr<long> defaults, interior_ptr<bool> bAuto );
		229
		230	void ValidatePropertyValue( CameraProperty prop, long value, interior_ptr<bool> successful );
		231
		232	bool ValidatePropertyValue( CameraProperty prop, long value );
		233
		234	CameraPropertyCapabilities^ GetPropertyCapability( CameraProperty prop );
		235
		236	property IDictionary<CameraProperty, CameraPropertyCapabilities^> ^ PropertyCapabilities
		237	{
		238	IDictionary<CameraProperty, CameraPropertyCapabilities^> ^ get();
		239	}
		240	#pragma endregion
		241
		242	void GetCaptureSizes(int index, IList<Tuple<int,int,int>^> ^ sizes);
		243
		244	property IList<Tuple<int,int,int>^> ^ CaptureSizes
		245	{
		246	IList<Tuple<int,int,int>^> ^ get();
		247	}
		248
		249	/// <summary>
		250	/// Stops the currently running camera and cleans up any global resources
		251	/// </summary>
		252	void Cleanup();
		253
		254	/// <summary>
		255	/// Stops the currently running camera
		256	/// </summary>
		257	void StopCamera();
		258
		259	/// <summary>
		260	/// Show the properties dialog for the specified webcam
		261	/// </summary>
		262	void DisplayCameraPropertiesDialog(int camIndex);
		263
		264	/// <summary>
		265	/// Count of the number of cameras installed
		266	/// </summary>
		267	property int Count;
		268
		269	/// <summary>
		270	/// Queries which camera is currently running via StartCamera(), -1 for none
		271	/// </summary>
		272	property int ActiveCameraIndex
		273	{
		274	int get()
		275	{
		276	return activeCameraIndex;
		277	}
		278	}
		279
		280	/// <summary>
		281	/// IDisposable
		282	/// </summary>
		283	~CameraMethods();
		284
		285	protected:
		286	/// <summary>
		287	/// Finalizer
		288	/// </summary>
		289	!CameraMethods();
		290
		291	#pragma region Camera Property Support
		292	bool IsCameraControlProperty( CameraProperty prop );
		293
		294	bool IsVideoProcAmpProperty( CameraProperty prop );
		295
		296	bool IsPropertyMaskEqual( CameraProperty prop, PropertyTypeMask mask );
		297
		298	WebCamLib::CameraControlProperty GetCameraControlProperty( CameraProperty prop );
		299
		300	WebCamLib::VideoProcAmpProperty GetVideoProcAmpProperty( CameraProperty prop );
		301
		302	bool IsPropertySupported( WebCamLib::CameraControlProperty prop );
		303
		304	bool IsPropertySupported( WebCamLib::VideoProcAmpProperty prop );
		305
		306	bool GetPropertyRange( WebCamLib::CameraControlProperty prop, interior_ptr<long> min, interior_ptr<long> max, interior_ptr<long> steppingDelta, interior_ptr<long> defaults, interior_ptr<bool> bAuto );
		307
		308	bool GetPropertyRange( WebCamLib::VideoProcAmpProperty prop, interior_ptr<long> min, interior_ptr<long> max, interior_ptr<long> steppingDelta, interior_ptr<long> defaults, interior_ptr<bool> bAuto );
		309
		310	bool GetProperty_value( WebCamLib::CameraControlProperty prop, interior_ptr<long> value, interior_ptr<bool> bAuto );
		311
		312	bool GetProperty_value( WebCamLib::VideoProcAmpProperty prop, interior_ptr<long> value, interior_ptr<bool> bAuto );
		313
		314	bool SetProperty_value( WebCamLib::CameraControlProperty prop, long value, bool bAuto );
		315
		316	bool SetProperty_value( WebCamLib::VideoProcAmpProperty prop, long value, bool bAuto );
		317	#pragma endregion
		318
		319	private:
		320	/// <summary>
		321	/// Pinned pointer to delegate for CaptureCallbackDelegate
		322	/// Keeps the delegate instance in one spot
		323	/// </summary>
		324	GCHandle ppCaptureCallback;
		325
		326	/// <summary>
		327	/// Initialize information about webcams installed on machine
		328	/// </summary>
		329	void RefreshCameraList();
		330
		331	/// <summary>
		332	/// Has dispose already happened?
		333	/// </summary>
		334	bool disposed;
		335
		336	/// <summary>
		337	/// Which camera is running? -1 for none
		338	/// </summary>
		339	int activeCameraIndex;
		340
		341	/// <summary>
		342	/// Releases all unmanaged resources
		343	/// </summary>
		344	void CleanupCameraInfo();
		345
		346	/// <summary>
		347	/// Setup the callback functionality for DirectShow
		348	/// </summary>
		349	HRESULT ConfigureSampleGrabber(IBaseFilter *pIBaseFilter);
		350
		351	HRESULT SetCaptureFormat(IBaseFilter* pCap, int width, int height, int bpp );
		352	};
		353
		354	// Forward declarations of callbacks
		355	typedef void (__stdcall PFN_CaptureCallback)(DWORD dwSize, BYTE pbData);
		356	PFN_CaptureCallback g_pfnCaptureCallback = NULL;
		357
		358	/// <summary>
		359	/// Lightweight SampleGrabber callback interface
		360	/// </summary>
		361	class SampleGrabberCB : public ISampleGrabberCB
		362	{
		363	public:
		364	SampleGrabberCB()
		365	{
		366	m_nRefCount = 0;
		367	}
		368
		369	virtual HRESULT STDMETHODCALLTYPE SampleCB(double SampleTime, IMediaSample *pSample)
		370	{
		371	return E_FAIL;
		372	}
		373
		374	virtual HRESULT STDMETHODCALLTYPE BufferCB(double SampleTime, BYTE *pBuffer, long BufferLen)
		375	{
		376	if (g_pfnCaptureCallback != NULL)
		377	{
		378	g_pfnCaptureCallback(BufferLen, pBuffer);
		379	}
		380
		381	return S_OK;
		382	}
		383
		384	virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject)
		385	{
		386	return E_FAIL; // Not a very accurate implementation
		387	}
		388
		389	virtual ULONG STDMETHODCALLTYPE AddRef()
		390	{
		391	return ++m_nRefCount;
		392	}
		393
		394	virtual ULONG STDMETHODCALLTYPE Release()
		395	{
		396	int n = --m_nRefCount;
		397	if (n <= 0)
		398	{
		399	delete this;
		400	}
		401	return n;
		402	}
		403
		404	private:
		405	int m_nRefCount;
		406	};
		407	}

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