haljpeg.~c

ct952 source code use for Digital Frame Photo

        }
        else //fit width
        {
            _bHALJPEGFit = HALJPEG_DISPLAY_FIT_WIDTH;
        }
    }
}

//***************************************************************************
//  Function    :   _HALJPEG_ResetClipRegionToFullBuf
//  Abstract    :   Call this function to clip full region
//  Arguments   :   none.
//  Return      :   none.
//  Side Effect :   none.
//  Notes       :   none.
//***************************************************************************
void _HALJPEG_ResetClipRegionToFullBuf(void)
{
    _wHALJPEGClipHStart = 0;
    _wHALJPEGClipVStart = 0;
    _wHALJPEGClipWidth = HALJPEG_DISPLAY_BUF_WIDTH;
    _wHALJPEGClipHeight = HALJPEG_DISPLAY_BUF_HEIGHT;
}

//***************************************************************************
//  Function    :   _HALJPEG_CalculateScaling
//  Abstract    :   Calculate the scaling according to the zoom mode.
//  Arguments   :   bZoomMode ==> The paramter of zoom mode.
//  Return      :   none.
//  Side Effect :   none.
//  Notes       :
//***************************************************************************
void _HALJPEG_CalculateScaling(BYTE bZoomMode)
{
    _bHALJPEGScalingAll = TRUE; //Extract all image from FOrg.

    _HALJPEG_GetFitWidthOrHeight();

    //To get the rotating status. Rotating 90 degree==>TRUE. Else==>FALSE.
    _bHALJPEGTemp = _HALJPEG_GetRotateStatus();

    //Calculate the scaling rate that we have to use the clip command
	if (_bHALJPEGTemp) //rotate
	{
		if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
			_wHALJPEGScalingRate = (WORD)((DWORD)_wHALJPEGRealHeight * 1000L / (DWORD)__HALJPEGSetting.wDisplayWidth);
		else //fit height
			_wHALJPEGScalingRate = (WORD)((DWORD)_wHALJPEGRealWidth * 1000L / (DWORD)__HALJPEGSetting.wDisplayHeight);
	}
	else
	{
		if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
			_wHALJPEGScalingRate = (WORD)((DWORD)_wHALJPEGRealWidth*1000L/(DWORD)__HALJPEGSetting.wDisplayWidth);
		else //fit height
			_wHALJPEGScalingRate = (WORD)((DWORD)_wHALJPEGRealHeight*1000L/(DWORD)__HALJPEGSetting.wDisplayHeight);
	}

    _wHALJPEGExtractWidth = _wHALJPEGRealWidth;   //Extract the width in the original buffer.
    _wHALJPEGExtractHeight = _wHALJPEGRealHeight; //Extract the Height in the original buffer.

    //Reset the clip region
    _HALJPEG_ResetClipRegionToFullBuf();

    switch (bZoomMode)
    {
    case VIEW_ZOOM25:
        _bHALJPEGTemp1 = 4;
        _bHALJPEGZoomRate = 25;
        break;
    case VIEW_ZOOM50:
        _bHALJPEGTemp1 = 2;
        _bHALJPEGZoomRate = 50;
        break;
    case VIEW_ZOOM100:
        _bHALJPEGTemp1 = 1;
        _bHALJPEGZoomRate = 100;
        break;
    case VIEW_ZOOM150:
        _bHALJPEGZoomRate = 150;
        break;
    case VIEW_ZOOM200:
        _bHALJPEGZoomRate = 200;
        break;
    default:
        break;
    }

    if (bZoomMode <= VIEW_ZOOM100)
    {
        if (_bHALJPEGTemp) //rotate
        {
            if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
                _wHALJPEGScalingHeight = __HALJPEGSetting.wDisplayWidth / _bHALJPEGTemp1;
            else
                _wHALJPEGScalingWidth = __HALJPEGSetting.wDisplayHeight / _bHALJPEGTemp1;
        }
        else
        {
            if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
                _wHALJPEGScalingWidth = __HALJPEGSetting.wDisplayWidth / _bHALJPEGTemp1;
            else
                _wHALJPEGScalingHeight = __HALJPEGSetting.wDisplayHeight / _bHALJPEGTemp1;
        }
    }
    else
    {
        //Need to re-decode when zoom in mode.
        if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
        {
            if (_bHALJPEGTemp) //rotate
                _wHALJPEGScalingHeight = HALJPEG_DISPLAY_BUF_WIDTH;
            else
                _wHALJPEGScalingWidth = HALJPEG_DISPLAY_BUF_WIDTH;
        }
        else //fit height
        {
            if (_bHALJPEGTemp) //rotate
                _wHALJPEGScalingWidth = HALJPEG_DISPLAY_BUF_HEIGHT;
            else
                _wHALJPEGScalingHeight = HALJPEG_DISPLAY_BUF_HEIGHT;
        }
    }

    //CoCo, Does CT909 JPEG Decoder need this?
    _HALJPEG_ForceTo8Multiple(&_wHALJPEGScalingWidth);
    _HALJPEG_ForceTo8Multiple(&_wHALJPEGScalingHeight);

    if (_bHALJPEGTemp) //Rotate 90
    {
        if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
        {
            _wHALJPEGScalingWidth = (WORD)((DWORD)_wHALJPEGScalingHeight * (DWORD)_wHALJPEGRealWidth / (DWORD)_wHALJPEGRealHeight);
            _HALJPEG_ProtectBufHeight(&_wHALJPEGScalingWidth);
        }
        else //fit height
        {
            _wHALJPEGScalingHeight = (WORD)((DWORD)_wHALJPEGScalingWidth * (DWORD)_wHALJPEGRealHeight / (DWORD)_wHALJPEGRealWidth);
            _HALJPEG_ProtectBufWidth(&_wHALJPEGScalingHeight);
        }
    }
    else
    {
        if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
        {
            _wHALJPEGScalingHeight = (WORD)((DWORD)_wHALJPEGScalingWidth * (DWORD)_wHALJPEGRealHeight / (DWORD)_wHALJPEGRealWidth);
            _HALJPEG_ProtectBufHeight(&_wHALJPEGScalingHeight);
        }
        else //fit height
        {
            _wHALJPEGScalingWidth = (WORD)((DWORD)_wHALJPEGScalingHeight * (DWORD)_wHALJPEGRealWidth / (DWORD)_wHALJPEGRealHeight);
            _HALJPEG_ProtectBufWidth(&_wHALJPEGScalingWidth);
        }
    }

    //CoCo, Does CT909 JPEG Decoder need this?
    _HALJPEG_ForceTo8Multiple(&_wHALJPEGScalingWidth);
    _HALJPEG_ForceTo8Multiple(&_wHALJPEGScalingHeight);

    _wHALJPEGExtractHStart = 0; //Extract the image from the starting position of the FOrg.
    _wHALJPEGExtractVStart = 0; //Extract the image from the starting position of the FOrg.

    if (bZoomMode > VIEW_ZOOM100)
    {
        //Calculate the width and height of the clip region.
        //if (_wHALJPEGScalingRate < (WORD)_bHALJPEGZoomRate*10)
        {
            //First, extract image by decode command. Second, clip it to fit the zoom rate.
            if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
            {
                if (_bHALJPEGTemp) //Rotate 90
                    _wHALJPEGClipWidth = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_WIDTH*(DWORD)HALJPEG_DISPLAY_BUF_WIDTH*100L/(DWORD)__HALJPEGSetting.wDisplayWidth/(DWORD)_bHALJPEGZoomRate);
                else
                    _wHALJPEGClipWidth = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_WIDTH*(DWORD)HALJPEG_DISPLAY_BUF_WIDTH*100L/(DWORD)__HALJPEGSetting.wDisplayWidth/(DWORD)_bHALJPEGZoomRate);

                _wHALJPEGClipHeight = (WORD)((DWORD)_wHALJPEGClipWidth * (DWORD)HALJPEG_DISPLAY_BUF_HEIGHT / (DWORD)HALJPEG_DISPLAY_BUF_WIDTH);
            }
            else
            {
                if (_bHALJPEGTemp) //Rotate 90
                    _wHALJPEGClipHeight = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*(DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*100L/(DWORD)__HALJPEGSetting.wDisplayHeight/(DWORD)_bHALJPEGZoomRate);
                else
                    _wHALJPEGClipHeight = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*(DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*100L/(DWORD)__HALJPEGSetting.wDisplayHeight/(DWORD)_bHALJPEGZoomRate);

                _wHALJPEGClipWidth = (WORD)((DWORD)_wHALJPEGClipHeight * (DWORD)HALJPEG_DISPLAY_BUF_WIDTH / (DWORD)HALJPEG_DISPLAY_BUF_HEIGHT);
            }

            _wHALJPEGClipHStart = (HALJPEG_DISPLAY_BUF_WIDTH - _wHALJPEGClipWidth) >> 1;
            _wHALJPEGClipVStart = (HALJPEG_DISPLAY_BUF_HEIGHT - _wHALJPEGClipHeight) >> 1;
        }
        /*
        else
        {
            _bHALJPEGScalingAll = FALSE;

            //Calculate the width and height of the picture that we want to extract from FOrg.
            if (_bHALJPEGTemp) //Rotate 90
            {
                if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
                {
                    if (((DWORD)__HALJPEGSetting.wDisplayWidth*(DWORD)_wHALJPEGRealWidth*(DWORD)_bHALJPEGZoomRate/100L/(DWORD)_wHALJPEGRealHeight) > (DWORD)HALJPEG_DISPLAY_BUF_HEIGHT)
                    {
                        //fill the whole screen to prevent the black region
                        _wHALJPEGScalingWidth = HALJPEG_DISPLAY_BUF_HEIGHT;
                        _wHALJPEGExtractWidth = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*(DWORD)_wHALJPEGRealHeight/(DWORD)__HALJPEGSetting.wDisplayWidth*100L/(DWORD)_bHALJPEGZoomRate);
                    }
                    else
                        _wHALJPEGScalingWidth = (WORD)((DWORD)__HALJPEGSetting.wDisplayWidth*(DWORD)_wHALJPEGRealWidth / (DWORD)_wHALJPEGRealHeight*(DWORD)_bHALJPEGZoomRate/100L);

                    _wHALJPEGExtractHeight = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_WIDTH*(DWORD)_wHALJPEGRealHeight*100L/(DWORD)__HALJPEGSetting.wDisplayWidth/(DWORD)_bHALJPEGZoomRate);
                }
                else //fit height
                {
                    if (((DWORD)__HALJPEGSetting.wDisplayHeight*(DWORD)_wHALJPEGRealHeight*(DWORD)_bHALJPEGZoomRate/100L/(DWORD)_wHALJPEGRealWidth) > (DWORD)HALJPEG_DISPLAY_BUF_WIDTH)
                    {
                        //fill the whole screen to prevent the black region
                        _wHALJPEGExtractHeight = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_WIDTH*(DWORD)_wHALJPEGRealWidth*100L/(DWORD)__HALJPEGSetting.wDisplayHeight/(DWORD)_bHALJPEGZoomRate);
                        _wHALJPEGScalingHeight = HALJPEG_DISPLAY_BUF_WIDTH;
                    }
                    else
                        _wHALJPEGScalingHeight = (WORD)((DWORD)__HALJPEGSetting.wDisplayHeight*(DWORD)_wHALJPEGRealHeight/(DWORD)_wHALJPEGRealWidth*(DWORD)_bHALJPEGZoomRate/100L);

                    _wHALJPEGExtractWidth = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*(DWORD)_wHALJPEGRealWidth*100L/(DWORD)__HALJPEGSetting.wDisplayHeight/(DWORD)_bHALJPEGZoomRate);
                }
            }
            else
            {
                if (_bHALJPEGFit == HALJPEG_DISPLAY_FIT_WIDTH) // fit width
                {
                    _wHALJPEGExtractWidth = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_WIDTH*(DWORD)_wHALJPEGRealWidth*100L/(DWORD)__HALJPEGSetting.wDisplayWidth/(DWORD)_bHALJPEGZoomRate);
                    if (((DWORD)__HALJPEGSetting.wDisplayWidth*(DWORD)_wHALJPEGRealHeight*(DWORD)_bHALJPEGZoomRate/100L/(DWORD)_wHALJPEGRealWidth) > (DWORD)HALJPEG_DISPLAY_BUF_HEIGHT)
                    {
                        //fill the whole screen to prevent the black region
                        _wHALJPEGExtractHeight = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*(DWORD)_wHALJPEGRealWidth*100L/(DWORD)__HALJPEGSetting.wDisplayWidth/(DWORD)_bHALJPEGZoomRate);
                        _wHALJPEGScalingHeight = HALJPEG_DISPLAY_BUF_HEIGHT;
                    }
                    else
                        _wHALJPEGScalingHeight = (WORD)((DWORD)__HALJPEGSetting.wDisplayWidth*(DWORD)_wHALJPEGRealHeight/(DWORD)_wHALJPEGRealWidth*(DWORD)_bHALJPEGZoomRate/100L);
                }
                else //fit height
                {
                    if (((DWORD)__HALJPEGSetting.wDisplayHeight*(DWORD)_wHALJPEGRealWidth*(DWORD)_bHALJPEGZoomRate/100L/(DWORD)_wHALJPEGRealHeight) > (DWORD)HALJPEG_DISPLAY_BUF_WIDTH)
                    {
                        //fill the whole screen to prevent the black region
                        _wHALJPEGExtractWidth = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_WIDTH*(DWORD)_wHALJPEGRealHeight*100L/(DWORD)__HALJPEGSetting.wDisplayHeight/(DWORD)_bHALJPEGZoomRate);
                        _wHALJPEGScalingWidth = HALJPEG_DISPLAY_BUF_WIDTH;
                    }
                    else
                        _wHALJPEGScalingWidth = (WORD)((DWORD)__HALJPEGSetting.wDisplayHeight*(DWORD)_wHALJPEGRealWidth/(DWORD)_wHALJPEGRealHeight*(DWORD)_bHALJPEGZoomRate/100L);

                    _wHALJPEGExtractHeight = (WORD)((DWORD)HALJPEG_DISPLAY_BUF_HEIGHT*(DWORD)_wHALJPEGRealHeight*100L/(DWORD)__HALJPEGSetting.wDisplayHeight/(DWORD)_bHALJPEGZoomRate);
                }
            }

            //CoCo, Does CT909 need it?
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGExtractWidth);
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGExtractHeight);
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGScalingWidth);
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGScalingHeight);

            //Set the starting position to extract the image from FOrg.
            _wHALJPEGExtractHStart = (_wHALJPEGRealWidth - _wHALJPEGExtractWidth) >> 1;
            _wHALJPEGExtractVStart = (_wHALJPEGRealHeight - _wHALJPEGExtractHeight) >> 1;

            //CoCo, Does CT909 need it?
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGExtractHStart);
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGExtractVStart);
        }
        */
    }

#ifndef CT950_STYLE
    _HALJPEG_TuneForTVAttribute();
#elif (DRAM_CONFIGURATION_TYPE == DRAM_SIZE_16)
    _HALJPEG_TuneForTVAttribute();
#endif //#ifndef CT950_STYLE

    if (_wHALJPEGScalingWidth < HALJPEG_DISPLAY_BUF_WIDTH)
    {
        if ((HALJPEG_DISPLAY_BUF_WIDTH-_wHALJPEGScalingWidth) <= HALJPEG_ENLARGE_WIDTH_PIXELS)
        {
            _wHALJPEGScalingWidth = HALJPEG_DISPLAY_BUF_WIDTH;
        }
    }

    if (_wHALJPEGScalingHeight < HALJPEG_DISPLAY_BUF_HEIGHT)
    {
        if ((HALJPEG_DISPLAY_BUF_HEIGHT-_wHALJPEGScalingHeight) <= HALJPEG_ENLARGE_HEIGHT_PIXELS)
        {
            _wHALJPEGScalingHeight = HALJPEG_DISPLAY_BUF_HEIGHT;
        }
    }
}

//***************************************************************************
//  Function    :   _HALJPEG_FirstScaling
//  Abstract    :   Do the first scaling to tell RISC scaling 3 frame buffer(big original buffer)
//              :   to one frame buffer. (720x480)
//  Arguments   :   none.
//  Return      :   none.
//  Side Effect :   none.
//  Notes       :   Modify _wHALJPEGRealWidth and _wHALJPEGRealHeight.
//***************************************************************************
void _HALJPEG_FirstScaling(void)
{
    //fit height
    if ((DWORD)((DWORD)_wHALJPEGRealWidth * (DWORD)HALJPEG_FIRST_SCALING_HEIGHT) <
        (DWORD)((DWORD)_wHALJPEGRealHeight * (DWORD)HALJPEG_FIRST_SCALING_WIDTH))
    {
        if (_wHALJPEGRealHeight > HALJPEG_FIRST_SCALING_HEIGHT)
        {
            //fit height
            //Can't exchange the sequence of calculating the width and height
            //Real width must be 8's multiple.
            _wHALJPEGRealWidth = (WORD)((DWORD)_wHALJPEGRealWidth * (DWORD)HALJPEG_FIRST_SCALING_HEIGHT / (DWORD)_wHALJPEGRealHeight);
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGRealWidth);
            _wHALJPEGRealHeight =  HALJPEG_FIRST_SCALING_HEIGHT;
        }
    }
    else //fit width
    {
        if (_wHALJPEGRealWidth > HALJPEG_FIRST_SCALING_WIDTH)
        {
            //Can't exchange the sequence of calculating the width and height
            //Real height must be 2's multiple.
            _wHALJPEGRealHeight = (WORD)((DWORD)_wHALJPEGRealHeight * (DWORD)HALJPEG_FIRST_SCALING_WIDTH / (DWORD)_wHALJPEGRealWidth);
            _HALJPEG_ForceTo8Multiple(&_wHALJPEGRealHeight);

            _wHALJPEGRealWidth =  HALJPEG_FIRST_SCALING_WIDTH;
        }
    }
}

//***************************************************************************
//  Function    :   _HALJPEG_TransformPanAction
//  Abstract    :   This function will transform the action of the pan according to
//              :   current operation.
//  Arguments   :   bAction, the action of pan.
//  Return      :   The action of pan.
//  Side Effect :   none.
//  Notes       :   use __HALJPEGSetting.bOperation to judge which pan action should be transformed.
//***************************************************************************
BYTE _HALJPEG_TransformPanAction(BYTE bAction)
{