diballoc.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#ifndef __DIBALLOC_H_
#define __DIBALLOC_H_

#define DibPtr(lpbi)            (LPVOID)(DibColors(lpbi) + (UINT)(lpbi)->biClrUsed)
#define DibColors(lpbi)         ((LPRGBQUAD)((LPBYTE)(lpbi) + (int)(lpbi)->biSize))
#define WIDTHBYTES(i)           ((unsigned long)((i+31)&(~31))/8)  //ULONG aligned !
#define DibNumColors(lpbi)      ((lpbi)->biClrUsed == 0 && (lpbi)->biBitCount <= 8	\
                                        ? (WORD)(1 << (int)(lpbi)->biBitCount)          \
                                        : (WORD)(lpbi)->biClrUsed)

typedef HANDLE	HDIB;

#ifdef _WIN32
typedef struct tag_DIBDATA
{
    BITMAPINFOHEADER	bmiHeader;
    RGBQUAD		bmiColors[256];
    HANDLE		hMapping;
    HBITMAP		hBitmap;
    DIBSECTION		DibSection;
} DIBDATA;

///////////////////
//	private functions

class CHXImageSample : public CHXMemoryBlock
{
public:
    CHXImageSample(CHXMemoryAllocator * pAllocator);
    virtual BOOL		Allocate(ULONG32 uSize);
    virtual void		Free();
    void			SetDibData(DIBDATA* pDibData);
    DIBDATA*			GetDibData();

private:
    BOOL m_bInitialized;
    DIBDATA m_DibData;
};

class CHXDibSectionAllocator : public CHXMemoryAllocator
{
public:
    CHXDibSectionAllocator(BOOL bThreadSafe=FALSE);
    virtual ~CHXDibSectionAllocator();

    UCHAR * 		GetPacketBuffer(IHXUnknown ** pPacketBuffer);
    HX_RESULT		SetProperties(HX20ALLOCPROPS* pRequest, HX20ALLOCPROPS* pActual);
    HX_RESULT		SetDibFormat(BITMAPINFO* pbi);
    inline BITMAPINFO*	GetDibFormap() { return m_pbi;}

private:
    BITMAPINFO* m_pbi;

};
#endif /* _WIN32 */

class CHXDIBits
{
public:
    CHXDIBits();
    virtual ~CHXDIBits();

    HX_RESULT		GetDIBits(HDC			/* IN */	hDC, 
				  HBITMAP		/* IN */	hBM, 
				  UCHAR*&		/* OUT */	pBits,
				  BITMAPINFOHEADER*&	/* OUT */	pHeader);
private:
    HDIB		m_hDIB;
};

#endif // __DIBALLOC_H_