www.pudn.com > DS4050src.zip > divxfilter.h

/************************************************************************** 
 *                                                                        * 
 * This code has been developed by Andrea Graziani. Those intending to    * 
 * use this software module in hardware or software products are advised  * 
 * that its use may infringe existing patents or copyrights, and any such *  
 * use would be at such party's own risk. The original developer of this  * 
 * software module and his/her company, and subsequent editors and their  * 
 * companies (including Project Mayo), will have no liability for use of  * 
 * this software or modifications or derivatives thereof.                 * 
 *                                                                        * 
 * Project Mayo gives users of the Codec and Filter a license to this     * 
 * software  module or modifications thereof for use in hardware or       * 
 * software products claiming conformance to the MPEG-4 Video Standard    * 
 * as described in the Open DivX license.                                 * 
 *                                                                        * 
 * The complete Open DivX license can be found at                         * 
 * http://www.projectmayo.com/opendivx/license.php                        * 
 *                                                                        * 
 **************************************************************************/ 
/** 
*  Copyright (C) 2001 - Project Mayo 
 * 
 * Andrea Graziani 
 * 
 * DivX Advanced Research Center  
* 
**/ 
// divxfilter.h // 
 
#include "decore.h" 
#include "divxfilterinterface.h" 
 
class DivXFilter :  
	public CVideoTransformFilter, 
	public IDivXFilterInterface, 
	public ISpecifyPropertyPages 
{ 
public: 
	// 
	// Necessary COM functions... 
	// 
	static CUnknown * WINAPI CreateInstance(LPUNKNOWN lpunk, HRESULT * phr); 
	STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void ** ppv); 
	DECLARE_IUNKNOWN; // call to declare IUnknown macro 
 
	// 
	// Output Pin datatype and buffer size functions 
	// 
	HRESULT CheckMediaType(const CMediaType * pmt); 
	HRESULT SetMediaType(PIN_DIRECTION direction, const CMediaType *pmt); 
 
	//  
	// IDivXFilterInterface methods 
	// 
  STDMETHODIMP get_PPLevel(int * PPLevel); 
  STDMETHODIMP put_PPLevel(int PPLevel); 
  STDMETHODIMP put_DefaultPPLevel(void); 
 
	// 
	// Extra Filter Info  
	// 
	DEC_MEM_REQS m_DecMemReqs; 
	DEC_PARAM m_DecParam; 
	int m_Initialized; 
	GUID m_CURRENTSubType; 
 
private: 
	// transform override function 
	HRESULT Transform(IMediaSample *pIn, IMediaSample *pOut); 
	HRESULT StartStreaming(); 
  HRESULT StopStreaming(); 
 
	// input pin overrride functions 
	HRESULT CheckInputType(const CMediaType * pmtIn); 
	HRESULT CheckTransform(const CMediaType * mptIn, const CMediaType * pmtOut); 
 
	// output pin override functions 
	HRESULT GetMediaType(int iPos, CMediaType * pmt); 
	HRESULT DecideBufferSize(IMemAllocator * pima, ALLOCATOR_PROPERTIES * pProperties); 
 
	DivXFilter(TCHAR * pName, LPUNKNOWN pUnk, HRESULT *pHr); 
	~DivXFilter(); 
 
	// required for ISpecifyPropertyPages 
	STDMETHODIMP GetPages(CAUUID * pPages); 
	STDMETHODIMP FreePages(CAUUID * pPages); 
	//  
	// PostProcessing Settings 
	// 
  const int m_iDefaultPPLevel; 
  int m_iPPLevel;	 
  int m_iPrevPPLevel; 
		 
	int m_iInitialized; 
 
  // locking critical section 
  CCritSec m_DivXLock; 
 
}; // DivXFilter