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|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <bmpfast.hxx>
#include <tools/debug.hxx>
#include <vcl/bmpacc.hxx>
#define FAST_ARGB_BGRA
#include <stdlib.h>
typedef unsigned char PIXBYTE;
class BasePixelPtr
{
public:
explicit BasePixelPtr( PIXBYTE* p = nullptr ) : mpPixel( p ) {}
void SetRawPtr( PIXBYTE* pRawPtr ) { mpPixel = pRawPtr; }
PIXBYTE* GetRawPtr() const { return mpPixel; }
void AddByteOffset( int nByteOffset ) { mpPixel += nByteOffset; }
protected:
PIXBYTE* mpPixel;
};
template <sal_uLong PIXFMT>
class TrueColorPixelPtr : public BasePixelPtr
{
public:
PIXBYTE GetRed() const;
PIXBYTE GetGreen() const;
PIXBYTE GetBlue() const;
PIXBYTE GetAlpha() const;
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const;
void SetAlpha( PIXBYTE a ) const;
void operator++(int);
};
// template specializations for truecolor pixel formats
template <>
class TrueColorPixelPtr<BMP_FORMAT_24BIT_TC_RGB> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 3; }
PIXBYTE GetRed() const { return mpPixel[0]; }
PIXBYTE GetGreen() const { return mpPixel[1]; }
PIXBYTE GetBlue() const { return mpPixel[2]; }
static PIXBYTE GetAlpha() { return 0; }
static void SetAlpha( PIXBYTE ) {}
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[0] = r;
mpPixel[1] = g;
mpPixel[2] = b;
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_24BIT_TC_BGR> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 3; }
PIXBYTE GetRed() const { return mpPixel[2]; }
PIXBYTE GetGreen() const { return mpPixel[1]; }
PIXBYTE GetBlue() const { return mpPixel[0]; }
static PIXBYTE GetAlpha() { return 0; }
static void SetAlpha( PIXBYTE ) {}
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[0] = b;
mpPixel[1] = g;
mpPixel[2] = r;
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_ARGB> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 4; }
PIXBYTE GetRed() const { return mpPixel[1]; }
PIXBYTE GetGreen() const { return mpPixel[2]; }
PIXBYTE GetBlue() const { return mpPixel[3]; }
PIXBYTE GetAlpha() const { return mpPixel[0]; }
void SetAlpha( PIXBYTE a ) const { mpPixel[0] = a; }
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[1] = r;
mpPixel[2] = g;
mpPixel[3] = b;
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_ABGR> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 4; }
PIXBYTE GetRed() const { return mpPixel[3]; }
PIXBYTE GetGreen() const { return mpPixel[2]; }
PIXBYTE GetBlue() const { return mpPixel[1]; }
PIXBYTE GetAlpha() const { return mpPixel[0]; }
void SetAlpha( PIXBYTE a ) const { mpPixel[0] = a; }
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[1] = b;
mpPixel[2] = g;
mpPixel[3] = r;
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_RGBA> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 4; }
PIXBYTE GetRed() const { return mpPixel[0]; }
PIXBYTE GetGreen() const { return mpPixel[1]; }
PIXBYTE GetBlue() const { return mpPixel[2]; }
PIXBYTE GetAlpha() const { return mpPixel[3]; }
void SetAlpha( PIXBYTE a ) const{ mpPixel[3] = a; }
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[0] = r;
mpPixel[1] = g;
mpPixel[2] = b;
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_BGRA> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 4; }
PIXBYTE GetRed() const { return mpPixel[2]; }
PIXBYTE GetGreen() const { return mpPixel[1]; }
PIXBYTE GetBlue() const { return mpPixel[0]; }
PIXBYTE GetAlpha() const { return mpPixel[3]; }
void SetAlpha( PIXBYTE a ) const{ mpPixel[3] = a; }
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[0] = b;
mpPixel[1] = g;
mpPixel[2] = r;
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_16BIT_TC_MSB_MASK> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 2; }
// TODO: non565-RGB
PIXBYTE GetRed() const { return (mpPixel[0] & 0xF8U); }
PIXBYTE GetGreen() const { return (mpPixel[0]<<5U) | ((mpPixel[1]>>3U)&28U); }
PIXBYTE GetBlue() const { return (mpPixel[1]<<3U); }
static PIXBYTE GetAlpha() { return 0; }
static void SetAlpha( PIXBYTE ) {}
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[0] = ((g >> 5U) & 7U) | (r & 0xF8U);
mpPixel[1] = ((g & 28U)<< 3U) | (b >> 3U);
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_16BIT_TC_LSB_MASK> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 2; }
// TODO: non565-RGB
PIXBYTE GetRed() const { return (mpPixel[1] & 0xF8U); }
PIXBYTE GetGreen() const { return (mpPixel[1]<<5U) | ((mpPixel[0]>>3U)&28U); }
PIXBYTE GetBlue() const { return (mpPixel[0]<<3U); }
static PIXBYTE GetAlpha() { return 0; }
static void SetAlpha( PIXBYTE ) {}
void SetColor( PIXBYTE r, PIXBYTE g, PIXBYTE b ) const
{
mpPixel[0] = ((g & 28U)<< 3U) | (b >> 3U);
mpPixel[1] = ((g >> 5U) & 7U) | (r & 0xF8U);
}
};
template <>
class TrueColorPixelPtr<BMP_FORMAT_8BIT_TC_MASK> : public BasePixelPtr
{
public:
void operator++() { mpPixel += 1; }
PIXBYTE GetAlpha() const { return mpPixel[0]; }
void SetAlpha( PIXBYTE a ) const { mpPixel[0] = a; }
};
// TODO: for some reason many Alpha maps are BMP_FORMAT_8BIT_PAL
// they should be BMP_FORMAT_8BIT_TC_MASK
template <>
class TrueColorPixelPtr<BMP_FORMAT_8BIT_PAL>
: public TrueColorPixelPtr<BMP_FORMAT_8BIT_TC_MASK>
{};
// converting truecolor formats
template <sal_uLong SRCFMT, sal_uLong DSTFMT>
inline void ImplConvertPixel( const TrueColorPixelPtr<DSTFMT>& rDst,
const TrueColorPixelPtr<SRCFMT>& rSrc )
{
rDst.SetColor( rSrc.GetRed(), rSrc.GetGreen(), rSrc.GetBlue() );
rDst.SetAlpha( rSrc.GetAlpha() );
}
template <>
inline void ImplConvertPixel<BMP_FORMAT_16BIT_TC_LSB_MASK, BMP_FORMAT_16BIT_TC_MSB_MASK> (
const TrueColorPixelPtr<BMP_FORMAT_16BIT_TC_MSB_MASK>& rDst,
const TrueColorPixelPtr<BMP_FORMAT_16BIT_TC_LSB_MASK>& rSrc )
{
// byte swapping
const PIXBYTE* pSrc = rSrc.GetRawPtr();
PIXBYTE* pDst = rDst.GetRawPtr();
pDst[1] = pSrc[0];
pDst[0] = pSrc[1];
}
template <sal_uLong SRCFMT, sal_uLong DSTFMT>
inline void ImplConvertLine( const TrueColorPixelPtr<DSTFMT>& rDst,
const TrueColorPixelPtr<SRCFMT>& rSrc, int nPixelCount )
{
TrueColorPixelPtr<DSTFMT> aDst( rDst );
TrueColorPixelPtr<SRCFMT> aSrc( rSrc );
while( --nPixelCount >= 0 )
{
ImplConvertPixel( aDst, aSrc );
++aSrc;
++aDst;
}
}
// alpha blending truecolor pixels
template <sal_uLong SRCFMT, sal_uLong DSTFMT>
inline void ImplBlendPixels( const TrueColorPixelPtr<DSTFMT>& rDst,
const TrueColorPixelPtr<SRCFMT>& rSrc, unsigned nAlphaVal )
{
static const unsigned nAlphaShift = 8;
if( !nAlphaVal )
ImplConvertPixel( rDst, rSrc );
else if( nAlphaVal != ~(~0U << nAlphaShift) )
{
int nR = rDst.GetRed();
int nS = rSrc.GetRed();
nR = nS + (((nR - nS) * nAlphaVal) >> nAlphaShift);
int nG = rDst.GetGreen();
nS = rSrc.GetGreen();
nG = nS + (((nG - nS) * nAlphaVal) >> nAlphaShift);
int nB = rDst.GetBlue();
nS = rSrc.GetBlue();
nB = nS + (((nB - nS) * nAlphaVal) >> nAlphaShift);
rDst.SetColor( sal::static_int_cast<PIXBYTE>(nR),
sal::static_int_cast<PIXBYTE>(nG),
sal::static_int_cast<PIXBYTE>(nB) );
}
}
template <sal_uLong MASKFMT, sal_uLong SRCFMT, sal_uLong DSTFMT>
inline void ImplBlendLines( const TrueColorPixelPtr<DSTFMT>& rDst,
const TrueColorPixelPtr<SRCFMT>& rSrc, const TrueColorPixelPtr<MASKFMT>& rMsk,
int nPixelCount )
{
TrueColorPixelPtr<MASKFMT> aMsk( rMsk );
TrueColorPixelPtr<DSTFMT> aDst( rDst );
TrueColorPixelPtr<SRCFMT> aSrc( rSrc );
while( --nPixelCount >= 0 )
{
ImplBlendPixels(aDst, aSrc, aMsk.GetAlpha());
++aDst;
++aSrc;
++aMsk;
}
}
static bool ImplCopyImage( BitmapBuffer& rDstBuffer, const BitmapBuffer& rSrcBuffer )
{
const int nSrcLinestep = rSrcBuffer.mnScanlineSize;
int nDstLinestep = rDstBuffer.mnScanlineSize;
const PIXBYTE* pRawSrc = rSrcBuffer.mpBits;
PIXBYTE* pRawDst = rDstBuffer.mpBits;
// source and destination don't match upside down
if( BMP_FORMAT_TOP_DOWN & (rSrcBuffer.mnFormat ^ rDstBuffer.mnFormat) )
{
pRawDst += (rSrcBuffer.mnHeight - 1) * nDstLinestep;
nDstLinestep = -rDstBuffer.mnScanlineSize;
}
else if( nSrcLinestep == nDstLinestep )
{
memcpy( pRawDst, pRawSrc, rSrcBuffer.mnHeight * nDstLinestep );
return true;
}
int nByteWidth = nSrcLinestep;
if( nByteWidth > rDstBuffer.mnScanlineSize )
nByteWidth = rDstBuffer.mnScanlineSize;
for( int y = rSrcBuffer.mnHeight; --y >= 0; )
{
memcpy( pRawDst, pRawSrc, nByteWidth );
pRawSrc += nSrcLinestep;
pRawDst += nDstLinestep;
}
return true;
}
template <sal_uLong DSTFMT,sal_uLong SRCFMT>
bool ImplConvertToBitmap( TrueColorPixelPtr<SRCFMT>& rSrcLine,
BitmapBuffer& rDstBuffer, const BitmapBuffer& rSrcBuffer )
{
// help the compiler to avoid instantiations of unneeded conversions
DBG_ASSERT( SRCFMT != DSTFMT, "ImplConvertToBitmap into same format");
if( SRCFMT == DSTFMT )
return false;
const int nSrcLinestep = rSrcBuffer.mnScanlineSize;
int nDstLinestep = rDstBuffer.mnScanlineSize;
TrueColorPixelPtr<DSTFMT> aDstLine; aDstLine.SetRawPtr( rDstBuffer.mpBits );
// source and destination don't match upside down
if( BMP_FORMAT_TOP_DOWN & (rSrcBuffer.mnFormat ^ rDstBuffer.mnFormat) )
{
aDstLine.AddByteOffset( (rSrcBuffer.mnHeight - 1) * nDstLinestep );
nDstLinestep = -nDstLinestep;
}
for( int y = rSrcBuffer.mnHeight; --y >= 0; )
{
ImplConvertLine( aDstLine, rSrcLine, rSrcBuffer.mnWidth );
rSrcLine.AddByteOffset( nSrcLinestep );
aDstLine.AddByteOffset( nDstLinestep );
}
return true;
}
template <sal_uLong SRCFMT>
inline bool ImplConvertFromBitmap( BitmapBuffer& rDst, const BitmapBuffer& rSrc )
{
TrueColorPixelPtr<SRCFMT> aSrcType; aSrcType.SetRawPtr( rSrc.mpBits );
// select the matching instantiation for the destination's bitmap format
switch( rDst.mnFormat & ~BMP_FORMAT_TOP_DOWN )
{
case BMP_FORMAT_1BIT_MSB_PAL:
case BMP_FORMAT_1BIT_LSB_PAL:
case BMP_FORMAT_4BIT_MSN_PAL:
case BMP_FORMAT_4BIT_LSN_PAL:
case BMP_FORMAT_8BIT_PAL:
break;
case BMP_FORMAT_8BIT_TC_MASK:
// return ImplConvertToBitmap<BMP_FORMAT_8BIT_TC_MASK>( aSrcType, rDst, rSrc );
case BMP_FORMAT_24BIT_TC_MASK:
// return ImplConvertToBitmap<BMP_FORMAT_24BIT_TC_MASK>( aSrcType, rDst, rSrc );
case BMP_FORMAT_32BIT_TC_MASK:
// return ImplConvertToBitmap<BMP_FORMAT_32BIT_TC_MASK>( aSrcType, rDst, rSrc );
break;
case BMP_FORMAT_16BIT_TC_MSB_MASK:
return ImplConvertToBitmap<BMP_FORMAT_16BIT_TC_MSB_MASK>( aSrcType, rDst, rSrc );
case BMP_FORMAT_16BIT_TC_LSB_MASK:
return ImplConvertToBitmap<BMP_FORMAT_16BIT_TC_LSB_MASK>( aSrcType, rDst, rSrc );
case BMP_FORMAT_24BIT_TC_BGR:
return ImplConvertToBitmap<BMP_FORMAT_24BIT_TC_BGR>( aSrcType, rDst, rSrc );
case BMP_FORMAT_24BIT_TC_RGB:
return ImplConvertToBitmap<BMP_FORMAT_24BIT_TC_RGB>( aSrcType, rDst, rSrc );
case BMP_FORMAT_32BIT_TC_ABGR:
return ImplConvertToBitmap<BMP_FORMAT_32BIT_TC_ABGR>( aSrcType, rDst, rSrc );
#ifdef FAST_ARGB_BGRA
case BMP_FORMAT_32BIT_TC_ARGB:
return ImplConvertToBitmap<BMP_FORMAT_32BIT_TC_ARGB>( aSrcType, rDst, rSrc );
case BMP_FORMAT_32BIT_TC_BGRA:
return ImplConvertToBitmap<BMP_FORMAT_32BIT_TC_BGRA>( aSrcType, rDst, rSrc );
#endif
case BMP_FORMAT_32BIT_TC_RGBA:
return ImplConvertToBitmap<BMP_FORMAT_32BIT_TC_RGBA>( aSrcType, rDst, rSrc );
}
static int nNotAccelerated = 0;
SAL_WARN_IF( rSrc.mnWidth * rSrc.mnHeight >= 4000 && ++nNotAccelerated == 100,
"vcl.gdi",
"ImplConvertFromBitmap for not accelerated case (" << std::hex << rSrc.mnFormat << "->" << rDst.mnFormat << ")" );
return false;
}
// A universal stretching conversion is overkill in most common situations
// => performance benefits for speeding up the non-stretching cases
bool ImplFastBitmapConversion( BitmapBuffer& rDst, const BitmapBuffer& rSrc,
const SalTwoRect& rTR )
{
// TODO:horizontal mirroring not implemented yet
if( rTR.mnDestWidth < 0 )
return false;
// vertical mirroring
if( rTR.mnDestHeight < 0 )
// TODO: rDst.mnFormat ^= BMP_FORMAT_TOP_DOWN;
return false;
// offseted conversion is not implemented yet
if( rTR.mnSrcX || rTR.mnSrcY )
return false;
if( rTR.mnDestX || rTR.mnDestY )
return false;
// stretched conversion is not implemented yet
if( rTR.mnDestWidth != rTR.mnSrcWidth )
return false;
if( rTR.mnDestHeight!= rTR.mnSrcHeight )
return false;
// check source image size
if( rSrc.mnWidth < rTR.mnSrcX + rTR.mnSrcWidth )
return false;
if( rSrc.mnHeight < rTR.mnSrcY + rTR.mnSrcHeight )
return false;
// check dest image size
if( rDst.mnWidth < rTR.mnDestX + rTR.mnDestWidth )
return false;
if( rDst.mnHeight < rTR.mnDestY + rTR.mnDestHeight )
return false;
const sal_uLong nSrcFormat = rSrc.mnFormat & ~BMP_FORMAT_TOP_DOWN;
const sal_uLong nDstFormat = rDst.mnFormat & ~BMP_FORMAT_TOP_DOWN;
// TODO: also implement conversions for 16bit colormasks with non-565 format
if( nSrcFormat & (BMP_FORMAT_16BIT_TC_LSB_MASK | BMP_FORMAT_16BIT_TC_MSB_MASK) )
if( rSrc.maColorMask.GetRedMask() != 0xF800
|| rSrc.maColorMask.GetGreenMask()!= 0x07E0
|| rSrc.maColorMask.GetBlueMask() != 0x001F )
return false;
if( nDstFormat & (BMP_FORMAT_16BIT_TC_LSB_MASK | BMP_FORMAT_16BIT_TC_MSB_MASK) )
if( rDst.maColorMask.GetRedMask() != 0xF800
|| rDst.maColorMask.GetGreenMask()!= 0x07E0
|| rDst.maColorMask.GetBlueMask() != 0x001F )
return false;
// special handling of trivial cases
if( nSrcFormat == nDstFormat )
{
// accelerated palette conversions not yet implemented
if( rSrc.maPalette != rDst.maPalette )
return false;
return ImplCopyImage( rDst, rSrc );
}
// select the matching instantiation for the source's bitmap format
switch( nSrcFormat )
{
case BMP_FORMAT_1BIT_MSB_PAL:
case BMP_FORMAT_1BIT_LSB_PAL:
case BMP_FORMAT_4BIT_MSN_PAL:
case BMP_FORMAT_4BIT_LSN_PAL:
case BMP_FORMAT_8BIT_PAL:
break;
case BMP_FORMAT_8BIT_TC_MASK:
// return ImplConvertFromBitmap<BMP_FORMAT_8BIT_TC_MASK>( rDst, rSrc );
case BMP_FORMAT_24BIT_TC_MASK:
// return ImplConvertFromBitmap<BMP_FORMAT_24BIT_TC_MASK>( rDst, rSrc );
case BMP_FORMAT_32BIT_TC_MASK:
// return ImplConvertFromBitmap<BMP_FORMAT_32BIT_TC_MASK>( rDst, rSrc );
break;
case BMP_FORMAT_16BIT_TC_MSB_MASK:
return ImplConvertFromBitmap<BMP_FORMAT_16BIT_TC_MSB_MASK>( rDst, rSrc );
case BMP_FORMAT_16BIT_TC_LSB_MASK:
return ImplConvertFromBitmap<BMP_FORMAT_16BIT_TC_LSB_MASK>( rDst, rSrc );
case BMP_FORMAT_24BIT_TC_BGR:
return ImplConvertFromBitmap<BMP_FORMAT_24BIT_TC_BGR>( rDst, rSrc );
case BMP_FORMAT_24BIT_TC_RGB:
return ImplConvertFromBitmap<BMP_FORMAT_24BIT_TC_RGB>( rDst, rSrc );
case BMP_FORMAT_32BIT_TC_ABGR:
return ImplConvertFromBitmap<BMP_FORMAT_32BIT_TC_ABGR>( rDst, rSrc );
#ifdef FAST_ARGB_BGRA
case BMP_FORMAT_32BIT_TC_ARGB:
return ImplConvertFromBitmap<BMP_FORMAT_32BIT_TC_ARGB>( rDst, rSrc );
case BMP_FORMAT_32BIT_TC_BGRA:
return ImplConvertFromBitmap<BMP_FORMAT_32BIT_TC_BGRA>( rDst, rSrc );
#endif
case BMP_FORMAT_32BIT_TC_RGBA:
return ImplConvertFromBitmap<BMP_FORMAT_32BIT_TC_RGBA>( rDst, rSrc );
}
static int nNotAccelerated = 0;
SAL_WARN_IF( rSrc.mnWidth * rSrc.mnHeight >= 4000 && ++nNotAccelerated == 100,
"vcl.gdi",
"ImplFastBitmapConversion for not accelerated case (" << std::hex << rSrc.mnFormat << "->" << rDst.mnFormat << ")" );
return false;
}
template <sal_uLong DSTFMT,sal_uLong SRCFMT> //,sal_uLong MSKFMT>
bool ImplBlendToBitmap( TrueColorPixelPtr<SRCFMT>& rSrcLine,
BitmapBuffer& rDstBuffer, const BitmapBuffer& rSrcBuffer,
const BitmapBuffer& rMskBuffer )
{
DBG_ASSERT( rMskBuffer.mnFormat == BMP_FORMAT_8BIT_PAL, "FastBmp BlendImage: unusual MSKFMT" );
const int nSrcLinestep = rSrcBuffer.mnScanlineSize;
int nMskLinestep = rMskBuffer.mnScanlineSize;
int nDstLinestep = rDstBuffer.mnScanlineSize;
TrueColorPixelPtr<BMP_FORMAT_8BIT_PAL> aMskLine; aMskLine.SetRawPtr( rMskBuffer.mpBits );
TrueColorPixelPtr<DSTFMT> aDstLine; aDstLine.SetRawPtr( rDstBuffer.mpBits );
// special case for single line masks
if( rMskBuffer.mnHeight == 1 )
nMskLinestep = 0;
// source and mask don't match: upside down
if( (rSrcBuffer.mnFormat ^ rMskBuffer.mnFormat) & BMP_FORMAT_TOP_DOWN )
{
aMskLine.AddByteOffset( (rSrcBuffer.mnHeight - 1) * nMskLinestep );
nMskLinestep = -nMskLinestep;
}
// source and destination don't match: upside down
if( (rSrcBuffer.mnFormat ^ rDstBuffer.mnFormat) & BMP_FORMAT_TOP_DOWN )
{
aDstLine.AddByteOffset( (rDstBuffer.mnHeight - 1) * nDstLinestep );
nDstLinestep = -nDstLinestep;
}
assert(rDstBuffer.mnHeight <= rSrcBuffer.mnHeight && "not sure about that?");
for (int y = rDstBuffer.mnHeight; --y >= 0;)
{
ImplBlendLines(aDstLine, rSrcLine, aMskLine, rDstBuffer.mnWidth);
aDstLine.AddByteOffset( nDstLinestep );
rSrcLine.AddByteOffset( nSrcLinestep );
aMskLine.AddByteOffset( nMskLinestep );
}
return true;
}
// some specializations to reduce the code size
template <>
inline bool ImplBlendToBitmap<BMP_FORMAT_24BIT_TC_BGR,BMP_FORMAT_24BIT_TC_BGR>(
TrueColorPixelPtr<BMP_FORMAT_24BIT_TC_BGR>&,
BitmapBuffer& rDstBuffer, const BitmapBuffer& rSrcBuffer,
const BitmapBuffer& rMskBuffer )
{
TrueColorPixelPtr<BMP_FORMAT_24BIT_TC_RGB> aSrcType; aSrcType.SetRawPtr( rSrcBuffer.mpBits );
return ImplBlendToBitmap<BMP_FORMAT_24BIT_TC_RGB>( aSrcType, rDstBuffer, rSrcBuffer, rMskBuffer );
}
template <>
inline bool ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_ABGR,BMP_FORMAT_32BIT_TC_ABGR>(
TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_ABGR>&,
BitmapBuffer& rDstBuffer, const BitmapBuffer& rSrcBuffer,
const BitmapBuffer& rMskBuffer )
{
TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_ARGB> aSrcType; aSrcType.SetRawPtr( rSrcBuffer.mpBits );
return ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_ARGB>( aSrcType, rDstBuffer, rSrcBuffer, rMskBuffer );
}
template <>
inline bool ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_BGRA,BMP_FORMAT_32BIT_TC_BGRA>(
TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_BGRA>&,
BitmapBuffer& rDstBuffer, const BitmapBuffer& rSrcBuffer,
const BitmapBuffer& rMskBuffer )
{
TrueColorPixelPtr<BMP_FORMAT_32BIT_TC_RGBA> aSrcType; aSrcType.SetRawPtr( rSrcBuffer.mpBits );
return ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_RGBA>( aSrcType, rDstBuffer, rSrcBuffer, rMskBuffer );
}
template <sal_uLong SRCFMT>
bool ImplBlendFromBitmap( BitmapBuffer& rDst, const BitmapBuffer& rSrc, const BitmapBuffer& rMsk )
{
TrueColorPixelPtr<SRCFMT> aSrcType; aSrcType.SetRawPtr( rSrc.mpBits );
// select the matching instantiation for the destination's bitmap format
switch( rDst.mnFormat & ~BMP_FORMAT_TOP_DOWN )
{
case BMP_FORMAT_1BIT_MSB_PAL:
case BMP_FORMAT_1BIT_LSB_PAL:
case BMP_FORMAT_4BIT_MSN_PAL:
case BMP_FORMAT_4BIT_LSN_PAL:
case BMP_FORMAT_8BIT_PAL:
break;
case BMP_FORMAT_8BIT_TC_MASK:
// return ImplBlendToBitmap<BMP_FORMAT_8BIT_TC_MASK>( aSrcType, rDst, rSrc, rMsk );
case BMP_FORMAT_24BIT_TC_MASK:
// return ImplBlendToBitmap<BMP_FORMAT_24BIT_TC_MASK>( aSrcType, rDst, rSrc, rMsk );
case BMP_FORMAT_32BIT_TC_MASK:
// return ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_MASK>( aSrcType, rDst, rSrc, rMsk );
break;
case BMP_FORMAT_16BIT_TC_MSB_MASK:
return ImplBlendToBitmap<BMP_FORMAT_16BIT_TC_MSB_MASK>( aSrcType, rDst, rSrc, rMsk );
case BMP_FORMAT_16BIT_TC_LSB_MASK:
return ImplBlendToBitmap<BMP_FORMAT_16BIT_TC_LSB_MASK>( aSrcType, rDst, rSrc, rMsk );
case BMP_FORMAT_24BIT_TC_BGR:
return ImplBlendToBitmap<BMP_FORMAT_24BIT_TC_BGR>( aSrcType, rDst, rSrc, rMsk );
case BMP_FORMAT_24BIT_TC_RGB:
return ImplBlendToBitmap<BMP_FORMAT_24BIT_TC_RGB>( aSrcType, rDst, rSrc, rMsk );
case BMP_FORMAT_32BIT_TC_ABGR:
return ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_ABGR>( aSrcType, rDst, rSrc, rMsk );
#ifdef FAST_ARGB_BGRA
case BMP_FORMAT_32BIT_TC_ARGB:
return ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_ARGB>( aSrcType, rDst, rSrc, rMsk );
case BMP_FORMAT_32BIT_TC_BGRA:
return ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_BGRA>( aSrcType, rDst, rSrc, rMsk );
#endif
case BMP_FORMAT_32BIT_TC_RGBA:
return ImplBlendToBitmap<BMP_FORMAT_32BIT_TC_RGBA>( aSrcType, rDst, rSrc, rMsk );
}
static int nNotAccelerated = 0;
SAL_WARN_IF( rSrc.mnWidth * rSrc.mnHeight >= 4000 && ++nNotAccelerated == 100,
"vcl.gdi",
"ImplBlendFromBitmap for not accelerated case (" << std::hex << rSrc.mnFormat << "*" << rMsk.mnFormat << "->" << rDst.mnFormat );
return false;
}
bool ImplFastBitmapBlending( BitmapWriteAccess& rDstWA,
const BitmapReadAccess& rSrcRA, const BitmapReadAccess& rMskRA,
const SalTwoRect& rTR )
{
// accelerated blending of paletted bitmaps not implemented yet
if( rSrcRA.HasPalette() )
return false;
if( rDstWA.HasPalette() )
return false;
// TODO: either get rid of mask's use of 8BIT_PAL or check the palette
// horizontal mirroring not implemented yet
if( rTR.mnDestWidth < 0 )
return false;
// vertical mirroring
if( rTR.mnDestHeight < 0 )
// TODO: rDst.mnFormat ^= BMP_FORMAT_TOP_DOWN;
return false;
// offseted blending is not implemented yet
if( rTR.mnSrcX || rTR.mnSrcY )
return false;
if( rTR.mnDestX || rTR.mnDestY )
return false;
// stretched blending is not implemented yet
if( rTR.mnDestWidth != rTR.mnSrcWidth )
return false;
if( rTR.mnDestHeight!= rTR.mnSrcHeight )
return false;
// check source image size
if( rSrcRA.Width() < rTR.mnSrcX + rTR.mnSrcWidth )
return false;
if( rSrcRA.Height() < rTR.mnSrcY + rTR.mnSrcHeight )
return false;
// check mask image size
if( rMskRA.Width() < rTR.mnSrcX + rTR.mnSrcWidth )
return false;
if( rMskRA.Height() < rTR.mnSrcY + rTR.mnSrcHeight )
if( rMskRA.Height() != 1 )
return false;
// check dest image size
if( rDstWA.Width() < rTR.mnDestX + rTR.mnDestWidth )
return false;
if( rDstWA.Height() < rTR.mnDestY + rTR.mnDestHeight )
return false;
BitmapBuffer& rDst = *rDstWA.ImplGetBitmapBuffer();
const BitmapBuffer& rSrc = *rSrcRA.ImplGetBitmapBuffer();
const BitmapBuffer& rMsk = *rMskRA.ImplGetBitmapBuffer();
const sal_uLong nSrcFormat = rSrc.mnFormat & ~BMP_FORMAT_TOP_DOWN;
const sal_uLong nDstFormat = rDst.mnFormat & ~BMP_FORMAT_TOP_DOWN;
// accelerated conversions for 16bit colormasks with non-565 format are not yet implemented
if( nSrcFormat & (BMP_FORMAT_16BIT_TC_LSB_MASK | BMP_FORMAT_16BIT_TC_MSB_MASK) )
if( rSrc.maColorMask.GetRedMask() != 0xF800
|| rSrc.maColorMask.GetGreenMask()!= 0x07E0
|| rSrc.maColorMask.GetBlueMask() != 0x001F)
return false;
if( nDstFormat & (BMP_FORMAT_16BIT_TC_LSB_MASK | BMP_FORMAT_16BIT_TC_MSB_MASK) )
if( rDst.maColorMask.GetRedMask() != 0xF800
|| rDst.maColorMask.GetGreenMask()!= 0x07E0
|| rDst.maColorMask.GetBlueMask() != 0x001F)
return false;
// select the matching instantiation for the source's bitmap format
switch( nSrcFormat )
{
case BMP_FORMAT_1BIT_MSB_PAL:
case BMP_FORMAT_1BIT_LSB_PAL:
case BMP_FORMAT_4BIT_MSN_PAL:
case BMP_FORMAT_4BIT_LSN_PAL:
case BMP_FORMAT_8BIT_PAL:
break;
case BMP_FORMAT_8BIT_TC_MASK:
// return ImplBlendFromBitmap<BMP_FORMAT_8BIT_TC_MASK>( rDst, rSrc );
case BMP_FORMAT_24BIT_TC_MASK:
// return ImplBlendFromBitmap<BMP_FORMAT_24BIT_TC_MASK>( rDst, rSrc );
case BMP_FORMAT_32BIT_TC_MASK:
// return ImplBlendFromBitmap<BMP_FORMAT_32BIT_TC_MASK>( rDst, rSrc );
break;
case BMP_FORMAT_16BIT_TC_MSB_MASK:
return ImplBlendFromBitmap<BMP_FORMAT_16BIT_TC_MSB_MASK>( rDst, rSrc, rMsk );
case BMP_FORMAT_16BIT_TC_LSB_MASK:
return ImplBlendFromBitmap<BMP_FORMAT_16BIT_TC_LSB_MASK>( rDst, rSrc, rMsk );
case BMP_FORMAT_24BIT_TC_BGR:
return ImplBlendFromBitmap<BMP_FORMAT_24BIT_TC_BGR>( rDst, rSrc, rMsk );
case BMP_FORMAT_24BIT_TC_RGB:
return ImplBlendFromBitmap<BMP_FORMAT_24BIT_TC_RGB>( rDst, rSrc, rMsk );
case BMP_FORMAT_32BIT_TC_ABGR:
return ImplBlendFromBitmap<BMP_FORMAT_32BIT_TC_ABGR>( rDst, rSrc, rMsk );
#ifdef FAST_ARGB_BGRA
case BMP_FORMAT_32BIT_TC_ARGB:
return ImplBlendFromBitmap<BMP_FORMAT_32BIT_TC_ARGB>( rDst, rSrc, rMsk );
case BMP_FORMAT_32BIT_TC_BGRA:
return ImplBlendFromBitmap<BMP_FORMAT_32BIT_TC_BGRA>( rDst, rSrc, rMsk );
#endif
case BMP_FORMAT_32BIT_TC_RGBA:
return ImplBlendFromBitmap<BMP_FORMAT_32BIT_TC_RGBA>( rDst, rSrc, rMsk );
}
static int nNotAccelerated = 0;
SAL_WARN_IF( rSrc.mnWidth * rSrc.mnHeight >= 4000 && ++nNotAccelerated == 100,
"vcl.gdi",
"ImplFastBlend for not accelerated case (" << std::hex << rSrc.mnFormat << "*" << rMsk.mnFormat << "->" << rDst.mnFormat << ")" );
return false;
}
bool ImplFastEraseBitmap( BitmapBuffer& rDst, const BitmapColor& rColor )
{
const sal_uLong nDstFormat = rDst.mnFormat & ~BMP_FORMAT_TOP_DOWN;
// erasing a bitmap is often just a byte-wise memory fill
bool bByteFill = true;
sal_uInt8 nFillByte;
switch( nDstFormat )
{
case BMP_FORMAT_1BIT_MSB_PAL:
case BMP_FORMAT_1BIT_LSB_PAL:
nFillByte = rColor.GetIndex();
nFillByte = static_cast<sal_uInt8>( -(nFillByte & 1) ); // 0x00 or 0xFF
break;
case BMP_FORMAT_4BIT_MSN_PAL:
case BMP_FORMAT_4BIT_LSN_PAL:
nFillByte = rColor.GetIndex();
nFillByte &= 0x0F;
nFillByte |= (nFillByte << 4);
break;
case BMP_FORMAT_8BIT_PAL:
case BMP_FORMAT_8BIT_TC_MASK:
nFillByte = rColor.GetIndex();
break;
case BMP_FORMAT_24BIT_TC_MASK:
case BMP_FORMAT_24BIT_TC_BGR:
case BMP_FORMAT_24BIT_TC_RGB:
nFillByte = rColor.GetRed();
if( (nFillByte != rColor.GetGreen())
|| (nFillByte != rColor.GetBlue()) )
bByteFill = false;
break;
default:
bByteFill = false;
nFillByte = 0x00;
break;
}
if( bByteFill )
{
long nByteCount = rDst.mnHeight * rDst.mnScanlineSize;
memset( rDst.mpBits, nFillByte, nByteCount );
return true;
}
// TODO: handle other bitmap formats
switch( nDstFormat )
{
case BMP_FORMAT_32BIT_TC_MASK:
case BMP_FORMAT_16BIT_TC_MSB_MASK:
case BMP_FORMAT_16BIT_TC_LSB_MASK:
case BMP_FORMAT_24BIT_TC_BGR:
case BMP_FORMAT_24BIT_TC_RGB:
case BMP_FORMAT_32BIT_TC_ABGR:
#ifdef FAST_ARGB_BGRA
case BMP_FORMAT_32BIT_TC_ARGB:
case BMP_FORMAT_32BIT_TC_BGRA:
#endif
case BMP_FORMAT_32BIT_TC_RGBA:
break;
default:
break;
}
return false;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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