surface.cpp

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

    m_pSite->SetOptimizedFormat(NULL);

    return HXR_OK;
}

STDMETHODIMP
CHXSurface::GetOptimizedFormat(REF(HX_COMPRESSION_TYPE) ulType)
{
    HXBitmapInfoHeader* pOptimizedFormat = m_pSite->GetOptimizedFormat();
    if (!pOptimizedFormat)
    {
	return HXR_FAIL;
    }

    ulType = pOptimizedFormat->biCompression;

    return HXR_OK;
}

STDMETHODIMP
CHXSurface::GetPreferredFormat(REF(HX_COMPRESSION_TYPE) ulType)
{
    ulType = m_PreferredFormat;

    return HXR_OK;
}


/*
 * IHXVideoControls methods
 */
STDMETHODIMP_(float)
CHXSurface::GetBrightness(void)
{
    return m_Brightness;
}

STDMETHODIMP
CHXSurface::SetBrightness(float Brightness)
{
    if (Brightness > MAX_BRIGHTNESS)
    {
	m_Brightness = (float) MAX_BRIGHTNESS;
    }
    else if (Brightness < MIN_BRIGHTNESS)
    {
	m_Brightness = (float) MIN_BRIGHTNESS;
    }
    else
    {
	m_Brightness = Brightness;
    }

    return HXR_OK;
}

STDMETHODIMP_(float)
CHXSurface::GetContrast(void)
{
    return m_Contrast;
}

STDMETHODIMP
CHXSurface::SetContrast(float Contrast)
{
    if (Contrast > MAX_CONTRAST)
    {
	m_Contrast = (float) MAX_CONTRAST;
    }
    else if (Contrast < MIN_CONTRAST)
    {
	m_Contrast = (float) MIN_CONTRAST;
    }
    else
    {
	m_Contrast = Contrast;
    }

    return HXR_OK;
}

STDMETHODIMP_(float)
CHXSurface::GetSaturation(void)
{
    return m_Saturation;
}

STDMETHODIMP
CHXSurface::SetSaturation(float Saturation)
{
    if (Saturation > MAX_SATURATION)
    {
	m_Saturation = (float) MAX_SATURATION;
    }
    else if (Saturation < MIN_SATURATION)
    {
	m_Saturation = (float) MIN_SATURATION;
    }
    else
    {
	m_Saturation = Saturation;
    }

    return HXR_OK;
}

STDMETHODIMP_(float)
CHXSurface::GetHue(void)
{
    return m_Hue;
}

STDMETHODIMP
CHXSurface::SetHue(float Hue)
{
    if (Hue > MAX_HUE)
    {
	m_Hue = (float) MAX_HUE;
    }
    else if (Hue < MIN_HUE)
    {
	m_Hue = (float) MIN_HUE;
    }
    else
    {
	m_Hue = Hue;
    }

    return HXR_OK;
}

STDMETHODIMP_(float)
CHXSurface::GetSharpness(void)
{
    return m_Sharpness;
}

STDMETHODIMP
CHXSurface::SetSharpness(float Sharpness)
{
    if (Sharpness > MAX_SHARPNESS)
    {
	m_Sharpness = (float) MAX_SHARPNESS;
    }
    else if (Sharpness < MIN_SHARPNESS)
    {
	m_Sharpness = (float) MIN_SHARPNESS;
    }
    else
    {
	m_Sharpness = Sharpness;
    }

    return HXR_OK;
}

STDMETHODIMP
CHXSurface::SetModeSharpness(UINT16 dFlag)
{
    //set m_ModeSharpness =1 when deblocking filter is on
    //set m_ModeSharpness =0 when deblocking filter is off
    //find the deblocking filter on/off by getstreampreoperty
    m_ModeSharpness=dFlag;
    return HXR_OK;
}

void
CHXSurface::PerformYUVConversion(UCHAR* ySrc,
				  UCHAR* uSrc,
				  UCHAR* vSrc,
				  INT32  nPitchSrc,
				  UCHAR* Dst,
				  INT32  nWidth,
				  INT32  nHeight,
				  INT32  nPitchDst,
				  HX_MOFTAG Format,
				  INT16  nExpand)
{
    INT16 nNewFormat = 0;

    if (Format == HXCOLOR_RGB3_ID)
    {
	nNewFormat = T_RGB888;
    }
    else if (Format == HXCOLOR_RGB565_ID)
    {
	nNewFormat = T_RGB565;
    }
    else if (Format == HXCOLOR_RGB555_ID)
    {
	nNewFormat = T_RGB555;
    }
    else
    {
	HX_ASSERT(0); // Invalid format
    }

    // We only need to Set the Color Adjustments if they've changed
    if (CheckColorSettings())
    {
	// Adjust colors according to video control settings

	m_pConverter->SetColorAdjustments(m_Brightness, m_Contrast, m_Saturation, m_Hue);

	// Reset Previous values so next time we'll know if they've changed
	m_PrevBrightness = m_Brightness;
	m_PrevContrast	 = m_Contrast;
	m_PrevSaturation = m_Saturation;
	m_PrevHue	 = m_Hue;
    }


    // We only need to Set the Color Adjustments if they've changed

    if (CheckSharpness())
    {
	// Adjust colors according to video control settings
	m_pConverter->SetSharpnessAdjustments(m_Sharpness,nExpand);

	// Reset Previous values so next time we'll know if they've changed
	m_PrevSharpness = m_Sharpness;


   }

    if (ySrc[0] != 1)
    {
	//if Sharpness is -1.0 (or close) do not do any edge enhancement
	//check necessary because intel mmx edge enhacement does not check this
	if( (m_Sharpness+1.0)>0.1 )
	{
		if(m_ModeSharpness)
		{
			    //Deblocking filter is ON
			    m_pConverter->EnhanceUniform(ySrc,nHeight,nWidth,nPitchSrc,m_Sharpness);
		}
		else
		{
			    //Deblocking filter is OFF
			    m_pConverter->Enhance(ySrc,nHeight,nWidth,nPitchSrc,m_Sharpness);
		}
	}
    }
    else
    {
	ySrc[0] = ySrc[1];
    }

    // Execute the conversion
    m_pConverter->ConvertYUVtoRGB(ySrc, uSrc, vSrc, nPitchSrc, Dst, nWidth,
	nHeight, nPitchDst, nNewFormat, nExpand);

    //change one corner pixel to put a digital watermark
    ySrc[0] = 1;

}

UINT16
CHXSurface::CheckColorSettings()
{
// NOTE 40 steps of granularity for color control parameters (based on
// below float to int precision; proper rounding is not essential)

    if( (int)(m_PrevBrightness * 20.f) != (int)(m_Brightness * 20.f) ||
	(int)(m_PrevContrast * 20.f) != (int)(m_Contrast * 20.f) ||
	(int)(m_PrevSaturation * 20.f) != (int)(m_Saturation * 20.f) ||
	(int)(m_PrevHue * 20.f) != (int)(m_Hue * 20.f) )
    {
	return 1;	// reinitializationing of color table required
    }
    else
    {
	return 0;	// no change in color controls
    }
}

UINT16
CHXSurface::CheckSharpness()
{
// NOTE 40 steps of granularity for sharpness control parameters (based on
// below float to int precision; proper rounding is not essential)

    if( (int)(m_PrevSharpness * 20.f) != (int)(m_Sharpness * 20.f)  )
    {
	return 1;	// reinitializationing of sharpness table required
    }
    else
    {
	return 0;	// no change in sharpness table
    }
}

UINT16
CHXSurface::CalculateNewBitDepth(HX_COMPRESSION_TYPE nNewFormat)
{
    UINT16 nNewBitDepth = 0;

    switch (nNewFormat)
    {
	case HXCOLOR_RGB3_ID:
	{
#ifdef _MACINTOSH
	    nNewBitDepth = 32;
#else
	    nNewBitDepth = 24;
#endif
	}
	break;

	case HXCOLOR_RGB24_ID:
	{
	    nNewBitDepth = 24;
	}
	break;

#ifdef _WINDOWS
	case HXCOLOR_RGB555_ID:
	{
	    nNewBitDepth = 16;
	}
	break;

	case HXCOLOR_RGB565_ID:
	{
	    nNewBitDepth = 16;
	}
	break;
#endif

	default:
	    HX_ASSERT(0);   // Invalid format
	    break;
    }

    return nNewBitDepth;
}

void
CHXSurface::AdjustBitmapHeader(HXBitmapInfoHeader* pBitmapInfo,
				HX_MOFTAG NewFormat)
{
    switch (NewFormat)
    {
	case HXCOLOR_RGB3_ID:
	{
#ifdef _MACINTOSH
	    pBitmapInfo->biCompression = HX_RGB;
	    pBitmapInfo->biBitCount  = 32;
#else
	    pBitmapInfo->biCompression = HX_RGB;
	    pBitmapInfo->biBitCount  = 24;
#endif
	}
	break;

	case HXCOLOR_RGB24_ID:
	{
	    pBitmapInfo->biCompression = HX_RGB;
	    pBitmapInfo->biBitCount  = 24;
	}
	break;

#ifdef _WINDOWS
	case HXCOLOR_RGB555_ID:
	{
	    pBitmapInfo->biCompression = HX_BITFIELDS;
	    pBitmapInfo->biBitCount    = 16;

	    pBitmapInfo->rcolor =   0x00007C00; // red
	    pBitmapInfo->gcolor =   0x000003E0; // green
	    pBitmapInfo->bcolor =   0x0000001F; // blue
	}
	break;

	case HXCOLOR_RGB565_ID:
	{
	    pBitmapInfo->biCompression = HX_BITFIELDS;
	    pBitmapInfo->biBitCount    = 16;

	    pBitmapInfo->rcolor =    0x0000F800; // red
	    pBitmapInfo->gcolor =    0x000007E0; // green
	    pBitmapInfo->bcolor =    0x0000001F; // blue
	}
	break;
#endif

	default:
	    HX_ASSERT(0);   // Invalid format
	    break;
    }
}