P2P编程

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Visual C++

Capture.h：源码内容
							/*
 *  Openmysee
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#ifndef __CAPTURE_H__
#define __CAPTURE_H__ 
#include "../captureserver/TVSourceConfig.h"
// definition of IGraph interface, this interface now is not useful, but
// it can extend later development.
class IGraph: public IUnknown
{
public:
	// initialize & unintiliase graph
	STDMETHOD(Initialize)() PURE;
	STDMETHOD(Uninitialize)() PURE;
	STDMETHOD(BuildGraph)() PURE;
	STDMETHOD(DisassembleGraph)() PURE;
	STDMETHOD(AddFilter)(CLSID clsidFilter,			   
		IBaseFilter** ppIFilter,	
		LPCTSTR pstrFilterName = NULL) PURE;
	STDMETHOD(RemoveFilter)(IBaseFilter* pIFilter) PURE;
	// Connects two pins together.
	// pIFilterOutput    -- A pointer to the filter that contains the output pin
	//					   to connect.
	// pstrPinNameOutput -- The name of the output pin. If it is NULL, the 
	//                      first output pin found will be connected.
	// pIFilterInput     -- A pointer to the filter that contains the input pin
	//					   to connect
	// pstrPinNameInput  -- The name of the input pin. If NULL, the first input
	//                      pin found will be connected
	// pmt				-- The media type of the connection.
	STDMETHOD(ConnectPins)(IBaseFilter* pIFilterOutput, 
		LPCTSTR pstrPinNameOutput,
		IBaseFilter* pIFilterInput, 
		LPCTSTR pstrPinNameInput,
		AM_MEDIA_TYPE* pmt = NULL) PURE;
	// Disconnects the specified pin.
	// pIFilter		-- The filter that contains the pstrPinName
	// pstrPinName   -- The name of pin be disconnected
	// dir			-- The direction of pin
	//				   PINDIR_INPUT	: input pin/PINDIR_OUTPUT : output pin
	STDMETHOD(DisconnectPin)(IBaseFilter *pIFilter, 
		LPCTSTR pstrPinName,
		PIN_DIRECTION dir = PINDIR_OUTPUT) PURE;
	STDMETHOD_(BOOL, IsConnected)(IBaseFilter *pFilter,
		LPCTSTR pstrPinName, 
		PIN_DIRECTION pd = PINDIR_OUTPUT) PURE;
	// Finds the specified pin on a filter.
	// pIFilter	  -- The filter that contains the pstrPinName
	// pstrPinName -- The name of pin to be find
	// dir		  -- Same with below
	STDMETHOD_(IPin* ,FindPinOnFilter)(IBaseFilter* pIFilter, 
		LPCTSTR pstrPinName,
		PIN_DIRECTION dir = PINDIR_OUTPUT) PURE;
	// graph controls
	STDMETHOD(Run)() PURE;
	STDMETHOD(Stop)() PURE;
	STDMETHOD(Pause)() PURE;
};
class CCaptureGraph: public IGraph
{
	friend class CAudioCompressSelectorDlg;
	// reference count of object
	ULONG m_RefCount;
	IGraphBuilder *m_pGB;         // capture graph
	CComPtr<ICaptureGraphBuilder2> graphBuilder2_;
	IAMCrossbar* m_pSB;
	IVideoWindow *m_pVW;          // video window
	IMediaControl *m_pMC;         // media control
	ITVSourceConfig *m_pTVConfig; // tv sink config
	// filters in graph 
	IBaseFilter *m_pVideoCapture;
	IBaseFilter *m_pVideoEncoder;
	IBaseFilter *m_pAudioEncoder;
	IBaseFilter *m_pAudioCapture;
	IBaseFilter *m_pTVStreamSink;
	IBaseFilter *m_pVideoSmartTee;
	IBaseFilter* m_pDVDecoder;
	//xiezhouwei 05-08-17添加
	IBaseFilter *m_pVideoOverlay;
	CPtrArray m_arrayOtherFilter;// filters that created by Render() func.
	// three filters added by zk 2004-04-16 for saving video and audio data to persist harddisk
	IBaseFilter *m_pAudioSmartTee;
	IBaseFilter *m_pAVIMuxer;
	IBaseFilter *m_pFileWriter;
	IBaseFilter* m_pftrDVSpliter;
	BOOL m_bGraphBuiled;
	BOOL m_bIsPreview;
	BOOL m_bIsOnlyAudio;
	BOOL m_bSave; // added by zk for saving 2004-04-16
	BOOL mbIsDV;	//added by xiezhouwei 2005-09-01
	//xiezhouwei 05-08-23
	BOOL m_bNeedOverlay;
	BOOL m_bISCrossBar;
	// current video encoder used to config
	CString m_strCurVideoEncoder;
	// current audio format that user selected, it will be used in
	// ConnectPin() func.
	AM_MEDIA_TYPE *m_pCurAudioAMT;
	// video owner window
	HWND m_hWndOwner;
	char m_szAVIFile[ MAX_PATH ];//AVI保存路径
public:
	CCaptureGraph();
	~CCaptureGraph();
	BOOL m_config;
	BYTE *state;
	int sstate;
	// Iunknown interface
public:
	STDMETHODIMP_(ULONG) AddRef();
	STDMETHODIMP_(ULONG) Release();
	STDMETHODIMP QueryInterface(REFIID iid, void** ppInter);
public:
	bool SetVideoState(BYTE* apState,  int aiSize);
	bool SetCurMediaType(AM_MEDIA_TYPE* aMTMediaType);
	bool GetCurMediaType(AM_MEDIA_TYPE** aMTMediaType);
	// ini & unini
	STDMETHODIMP Initialize();
	STDMETHODIMP Uninitialize();
	// controls
	STDMETHODIMP Run();
	STDMETHODIMP Stop();
	STDMETHODIMP Pause();
	// enums,it respectively call EnumSpeciFilters
	// with diffrent specification
    STDMETHODIMP EnumVideoCapDevices(CStringArray &);
    STDMETHODIMP EnumAudioCapDevices(CStringArray &);
    STDMETHODIMP EnumVideoEncoders(CStringArray &);
	STDMETHODIMP EnumAudioEncoders(CStringArray &);
	// configs
	STDMETHODIMP ConfigVideoCapDeviceByName(HWND hParent);
    STDMETHODIMP ConfigAudioCapDeviceByName(HWND hParent);
	STDMETHODIMP ConfigVideoEncoderByName(HWND hParent);
	STDMETHODIMP ConfigAudioEncoderByName(HWND hParent);
	STDMETHODIMP ConfigSysCfg(HWND hParent);
	// some filter creations must be implemented by enumulator
	// implemented with FindFilterByName auxily function
    HRESULT CreateVideoCapDeviceFilterByName(LPTSTR strName);
    HRESULT CreateAudioCapDeviceFilterByName(LPTSTR strName);
	HRESULT CreateVideoEncoderFilterByName(LPTSTR strName);
	HRESULT CreateAudioEncoderFilterByName(LPTSTR strName);
	//判断是否是DMOFilter by xiezhouwei
	BOOL IsDMOFilter();
	//设置DMO属性 by xiezhouwei
	STDMETHODIMP BuildVideoDMOEncoder();
	//设置DMO时，得到媒体类型 by xiezhouwei 0917
	HRESULT GetInputMediaType(IBaseFilter* pCap, AM_MEDIA_TYPE& mt);
	//创建DMOFilter
	HRESULT CreateV9EncoderFilter();
	//
	//xiezhouwei 05-08-17 添加
	//初始化字幕Filter
	// 设置是否需要字幕的
	//void SetNeedOverlay(bool abNeedOverlay);
	HRESULT CreateUideoOverlay();
	HRESULT ConfigVideoOverlay(HWND hParent);
	void ReleaseUideoOverlay();
	// video owner wnd
	void SetOwner(HWND hWnd){m_hWndOwner = hWnd;}
	// preview
	VOID SetPreview(BOOL bIsPreview);
	BOOL IsPreview(){ return m_bIsPreview; }
	// CrossBar
	VOID SetCrossBar(BOOL abIsCrossBar)
	{ 
		if (abIsCrossBar != m_bISCrossBar)
		{
			m_bISCrossBar = abIsCrossBar;
			DisassembleGraph();
		}		
	}
	// only audio
	void SetOnlyAudio( BOOL bIsOnlyAudio );
	BOOL IsOnlyAudio(){ return m_bIsOnlyAudio; }
	// compress bit rate 
	FLOAT GetCompressRata(){ return m_pTVConfig->GetCompressedSpeed();}
	//=========================================
	// Writed by zhuwei 2005-8-12 
	//Show Pin Setting
public:
	void ShowPinSetting(HWND);
	//Set AVI FileName
public:		
	void SetAVIFile( char* );
private:
	//////////////////////////////////////////////////////////////////////////
	//与DV的相关处理
	//////////////////////////////////////////////////////////////////////////
	//判断是否为DV
	void JudgeDV();
	//将DV信号分离
	STDMETHODIMP DVSplitter();
	//构建DV音频链路
	STDMETHODIMP BuildDVAudio();
	//添加DV字幕
	STDMETHODIMP AddDVVideoOverlay();
	//构建DV视频预览
	STDMETHODIMP BuildDVVideoPrview();
	//构建DV视频链路
	STDMETHODIMP BuildDVVideo();
	//Build DV链路
	STDMETHODIMP DisplayDV();
	//////////////////////////////////////////////////////////////////////////
	//一般的采集链路
	//////////////////////////////////////////////////////////////////////////
	//构建一般的Graph的音频部分
	STDMETHODIMP BuildGeneralAudio();
	//在VideoGraph中加入字幕Filter
	STDMETHODIMP AddVideoOverlayFilter();
	//视频部分预览
	STDMETHODIMP BuildVideoPreview();
	//打开CrossBar
	STDMETHODIMP OpenCrossBar();
	//构建并预览一般的Graph的视频部分
	STDMETHODIMP BuildGeneralVideo();
	//构建存储链路
	STDMETHODIMP BuildSaveGraph();
	//构建一般的Graph
	STDMETHODIMP BuildGeneralGraph();
	//=========================================
private:
	STDMETHODIMP AddFilter(CLSID clsidFilter,			   
		IBaseFilter** ppIFilter,	
		LPCTSTR pstrFilterName = NULL);
	STDMETHODIMP RemoveFilter(IBaseFilter* pIFilter);
	STDMETHODIMP ConnectPins(IBaseFilter* pIFilterOutput, 
		LPCTSTR pstrPinNameOutput,
		IBaseFilter* pIFilterInput, 
		LPCTSTR pstrPinNameInput,
		AM_MEDIA_TYPE* pmt = NULL);
	//自动连接Filter
	STDMETHODIMP CCaptureGraph::ConnectAutoPins(IBaseFilter* pIFilterOutput, 
		LPCTSTR pstrPinNameOutput,
		IBaseFilter* pIFilterInput, 
		LPCTSTR pstrPinNameInput);
	STDMETHODIMP_(BOOL) IsConnected(IBaseFilter *pFilter,
		LPCTSTR pstrPinName, 
		PIN_DIRECTION pd = PINDIR_OUTPUT);
	STDMETHODIMP DisconnectPin(IBaseFilter *pIFilter, 
		LPCTSTR pstrPinName,
		PIN_DIRECTION dir = PINDIR_OUTPUT);
	STDMETHODIMP_(IPin*) FindPinOnFilter(IBaseFilter* pIFilter, 
		LPCTSTR pstrPinName,
		PIN_DIRECTION dir = PINDIR_OUTPUT);
	STDMETHODIMP BuildGraph();
	STDMETHODIMP DisassembleGraph();
	// audio compression format
	HRESULT EnumAudioWaveFormat(CListBox* pLB);// called by main dlg
	void SetAudioWaveformat(AM_MEDIA_TYPE* pamt);// called by selector dlg
	// used to enum fiters in specified catagory
	HRESULT EnumSpeciFilters(IID iidEnumType, CStringArray &);
	// used to create filter 
	HRESULT FindFilterByName(LPTSTR strName, IBaseFilter **ppFilter, IID iidEnumType);
	// used to get audio capture device 
	HRESULT GetAudioCaptureDevice();
	// used for filling the m_arryOtherFilter, diff from our 
	// refrenced filters
	BOOL IsFilterInStdFilters(IBaseFilter *pFilter);
};
#endif// __CAPTURE_H__

						