hxcolor.cpp

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

                                {CID_RGB8,   RGB8toRGB8},   
                                {CID_BGR32,  RGB8toBGR32},
                                {CID_ARGB32,  RGB8toRGB32},
                                {CID_UNKNOWN,0}};
#else

static CCLINK pcclRGB8   [] = { {CID_UNKNOWN, 0} };

#endif

/* "XING to *" converters: */
static CCLINK pcclXing   [] = { {CID_YV12,   XINGtoYV12}, 
                                {CID_YUY2,   XINGtoYUY2},
                                {CID_UYVY,   XINGtoUYVY},
                                {CID_RGB32, XINGtoRGB32}, 
                                {CID_RGB24, XINGtoRGB24},
                                {CID_RGB565, XINGtoRGB565}, 
#ifdef _8_BIT_SUPPORT
                                {CID_RGB8, XINGtoRGB8},
#endif
                                {CID_ARGB32, XINGtoRGB32}, 
                                {CID_UNKNOWN,0} 

};

/* "BGR* to *" converters: */
static CCLINK pcclBGR32  [] = { {CID_I420,    BGR_32toI420},
                                {CID_UNKNOWN,0} 
								};

static CCLINK pcclBGR24  [] = { {CID_I420,    BGR24toI420},
                                {CID_UNKNOWN,0} 
								};




/* unsupported input formats: */
static CCLINK pcclUNKNOWN [] = {{CID_UNKNOWN, 0}};

/*
 * Color formats/Converters map:
 */
static PCCLINK ppcclColorMap[] =
{
    pcclI420, 
    pcclYV12, 
    pcclYVU9, 
    pcclYUY2, 
    pcclUYVY,
    pcclRGB32, 
    pcclRGB24, 
    pcclRGB565, 
    pcclRGB555, 
    pcclRGB8, 
    pcclXing,
    pcclARGB32, 
    pcclYUVA,
	pcclYUVU,
    pcclUNKNOWN,
    pcclBGR32,
    pcclBGR24
};

/*
 * Retrieve the list of color formats that can be converted to, given an input
 * format
 * Use:
 *  HX_RESULT GetCompatibleColorFormats (INT32 cidIn, INT32* pcidOut, UINT32* pnSize);
 * Input:
 *  cidIn - input color format ID (!CID_UNKNOWN)
 *  pcidOut - in - empty array, out - filled array of supported output formats
 *  pnSize - in - size of array, out - number of elements in array
 * Returns:
 *  result
 */HX_RESULT HXEXPORT ENTRYPOINT(GetCompatibleColorFormats)(
    INT32 cidIn /* in */, 
    INT32* pcidOut /* in/out */, 
    UINT32* pnSize /* in/out */)
{
    HX_RESULT res = HXR_FAIL;

        /* check parameters: */
    int nConversions = sizeof(ppcclColorMap)/sizeof(PCCLINK);
    if(cidIn >= 0 && cidIn < nConversions && pcidOut && pnSize) 
    {
	UINT32 nFormats = 0;
        /* scan color map: */
        PCCLINK pccl = ppcclColorMap [cidIn];
        while(pccl && pccl->cidOut != CID_UNKNOWN && nFormats < *pnSize) 
	{
	    pcidOut[nFormats] = pccl->cidOut;

            /* try next element in the list: */
            pccl++;
	    nFormats++;
        }

	res = HXR_OK;
	*pnSize = nFormats;
    }

    return res;
}

/*
 * Find Converter to trasform data in format X to format Y.
 * Use:
 *  LPHXCOLORCONVERTER GetColorConverter (INT32 cidIn, INT32 cidOut);
 * Input:
 *  cidIn - input color format ID (!CID_UNKNOWN)
 *  cidOut - desirable output color format ID (!CID_UNKNOWN)
 * Returns:
 *  pointer to an appropriate color conversion routine, if success;
 *  NULL - conversion is not supported.
 */
LPHXCOLORCONVERTER HXEXPORT ENTRYPOINT(GetColorConverter) (INT32 cidIn, INT32 cidOut)
{
    /* check parameters: */
    int nConversions = sizeof(ppcclColorMap)/sizeof(PCCLINK);
    if (cidIn >= 0 && cidIn < nConversions &&
        cidOut >= 0 && cidOut <= NFORMATS) {

        /* scan color map: */
        PCCLINK pccl = ppcclColorMap [cidIn];
        while (pccl &&
               pccl->cidOut != CID_UNKNOWN) {

            /* check output format:  */
            if (pccl->cidOut == cidOut)
                return pccl->pfnCC;

            /* try next element in the list: */
            pccl ++;
        }
    }
    return NULL;
}

LPHXCOLORCONVERTER2 HXEXPORT ENTRYPOINT(GetColorConverter2) (INT32 cidIn, INT32 cidOut)
{
    CCLINK2 *pTemp = NULL;

    /* check parameters: */
    if (cidIn == CID_I420)
    {
        pTemp = pcclI420x;
    }
    else if (cidIn == CID_YV12)
    {
        pTemp = pcclYV12x;
    }
    else if (cidIn == CID_YUY2)
    {
        pTemp = pcclYUY2x;
    }
    else if (cidIn == CID_UYVY)
    {
        pTemp = pcclUYVYx;
    }

    if (pTemp)
    {
        /* scan color map: */
        for (int i=0; pTemp[i].cidOut != CID_UNKNOWN; i++)
        {
            /* check output format:  */
            if (pTemp[i].cidOut == cidOut)
                return pTemp[i].pfnCC;
        }
    }

    return NULL;
}


/*
 * Try selected compatible color formats.
 * Use:
 *  BOOL ScanCompatibleColorFormats (INT32 cidIn, INT32 cidOutMask, void *pParam,
 *      BOOL (*pfnTryIt) (void *pParam, INT32 cidOut, LPHXCOLORCONVERTER pfnCC));
 * Input:
 *  cidIn - input color format ID (!CID_UNKNOWN)
 *  cidOutMask - masks output formats to try (use ~0 to scan all formats)
 *  pParam - pointer to a parameter block to pass to fpTryIt ()
 *  pfnTryIt - pointer to a function, which will be called for each
 *          compatible output format;
 * Returns:
 *  TRUE, if fpTryIt() has exited with TRUE status;
 *  FALSE, if non of the compatible formats has been accepted by fpTryIt().
 */
BOOL HXEXPORT ENTRYPOINT(ScanCompatibleColorFormats) (INT32 cidIn, INT32 cidOutMask, void *pParam,
    BOOL (*pfnTryIt) (void *pParam, INT32 cidOut, LPHXCOLORCONVERTER pfnCC), INT32)
{
    /* check parameters: */
    int nConversions = sizeof(ppcclColorMap)/sizeof(PCCLINK);
    if (cidIn >= 0 && cidIn < nConversions && pfnTryIt != NULL) {

        /* scan color map: */
        PCCLINK pccl = ppcclColorMap [cidIn];
        while (pccl->cidOut != CID_UNKNOWN) {

            /* try this format: */
            if ((cidOutMask & (1U << pccl->cidOut)) &&
                (* pfnTryIt) (pParam, pccl->cidOut, pccl->pfnCC))
                return TRUE;

            /* try next element in the list: */
            pccl ++;
        }
    }
    return FALSE;
}

/*
 * Try all compatible color formats.
 */
BOOL HXEXPORT ENTRYPOINT(ScanAllCompatibleColorFormats) (INT32 cidIn,void *pParam,
    BOOL (*pfnTryIt) (void *pParam, INT32 cidOut, LPHXCOLORCONVERTER pfnCC), INT32)
{
    return ENTRYPOINT(ScanCompatibleColorFormats) (cidIn, (INT32)~0, pParam, pfnTryIt);
}


/***********************
 * Old HXCOLOR.DLL interface:
 ****************************************************/

#ifdef _FAT_HXCOLOR
/*
 * Converts a YUV buffer into an RGB buffer in the specified format.
 */
void HXEXPORT ENTRYPOINT(ConvertYUVtoRGB) (UCHAR* ySrc, UCHAR* uSrc, UCHAR* vSrc,
                                           INT32  nPitchSrc,
                                           UCHAR* Dst, INT32  nWidth, INT32 nHeight,
                                           INT32  nPitchDst, INT16 nFormat, INT16 nExpand)
{
#if defined(_WINDOWS) || defined(_UNIX)

    static void (*cc []) (unsigned char *, unsigned char *, unsigned char *, int, unsigned char *, int, int, int) =
    {
        oldI420toRGB24,   oldI420toRGB555,   oldI420toRGB565,
        oldI420toRGB24x2, oldI420toRGB555x2, oldI420toRGB565x2
    };

    /* get function index: */
    register int idx = (nFormat - T_RGB888);
    if (idx < 0 || idx > 2) return;         /* bad format */
    if (nExpand) idx += 3;

    /* call color converter/interpolator: */
    (* cc [idx]) (ySrc, uSrc, vSrc, nPitchSrc, Dst, nWidth, nHeight, nPitchDst);

#elif defined (_MACINTOSH)

    /* Mac version uses big endian RGB32 format only.
     * Note, that our *->RGB32 converters will generate correct output
     * on both LE & BE machines: */
    (nExpand? oldI420toRGB32x2: oldI420toRGB32)
        (ySrc, uSrc, vSrc, nPitchSrc, Dst, nWidth, nHeight, nPitchDst);
#endif
}

void HXEXPORT ENTRYPOINT(ConvertYUVtoMacRGB32) (UCHAR* ySrc, UCHAR* uSrc, UCHAR* vSrc, INT32  nPitchSrc,
        UCHAR* Dst, INT32  nWidth, INT32  nHeight, INT32  nPitchDst, INT16  nFormat, INT16  nExpand)
{
    /* Mac version uses big endian RGB32 format only.
     * Note, that our *->RGB32 converters will generate correct output
     * on both LE & BE machines: */
    (nExpand? oldI420toRGB32x2: oldI420toRGB32)
        (ySrc, uSrc, vSrc, nPitchSrc, Dst, nWidth, nHeight, nPitchDst);
}

/*
 * Converts a 24bit RGB Buffer into a 32bit RGB buffer, used mainly on the Macintosh.
 */
void HXEXPORT ENTRYPOINT(ConvertRGB24toXRGB) (UCHAR* pSrc, UCHAR* pDest,
    ULONG32 srcSize, ULONG32 destSize, INT32 nWidth, INT32 nHeight)
{
    /* this shall generate a correct padded RGB32 on both LE & BE machines: */
    RGB24toRGB32 (pDest, nWidth, nHeight, (nWidth*3+3)&~3, 0, 0, nWidth, nHeight,
                 pSrc, nWidth, nHeight, nWidth * 4, 0, 0, nWidth, nHeight);
}

/*
 * Converts a RGB3 buffer into a YUV buffer in Y'CbCr 4:2:0 format.
 */
void HXEXPORT ENTRYPOINT(ConvertRGBtoYUV) (UCHAR* pInput, UCHAR* pOutput,
    INT32 nWidth, INT32 nHeight, BOOL bBGR)
{
    /* ignore bBRG for now: */
    RGB24toI420 (pOutput, nWidth, nHeight, (nWidth*3+3)&~3, 0, 0, nWidth, nHeight,
                pInput, nWidth, nHeight, nWidth, 0, 0, nWidth, nHeight);
}

#endif


#ifdef __cplusplus
}
#endif