sl@0: // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "BMCONV.H"
sl@0: 
sl@0: BitmapLoader::BitmapLoader():
sl@0: 	iNumBmpColors(0),
sl@0: 	iBmpColors(NULL),
sl@0: 	iBmpBits(NULL),
sl@0: 	iAlphaBits(NULL)
sl@0: 	{}
sl@0: 
sl@0: BitmapLoader::~BitmapLoader()
sl@0: 	{
sl@0: 	delete [] iBmpColors;
sl@0: 	delete [] iBmpBits;
sl@0: 	delete [] iAlphaBits;
sl@0: 	}
sl@0: 
sl@0: int BitmapLoader::LoadBitmap(char* aFileName,int aBpp,TBitmapColor aColor,SEpocBitmapHeader*& aPbm)
sl@0: 	{
sl@0: 	char sig[2];
sl@0: 
sl@0: #if defined(__MSVCDOTNET__) || defined(__LINUX__) || defined(__TOOLS2__)
sl@0: 	fstream file(aFileName, ios::in | ios::binary);
sl@0: #else //!__MSVCDOTNET__
sl@0: 	fstream file(aFileName, ios::in | ios::binary | ios::nocreate);
sl@0: #endif //__MSVCDOTNET__
sl@0: 
sl@0: 	if (file.is_open()==0)
sl@0: 		return Files;
sl@0: 	file.read(sig,2);
sl@0: 	file.close();
sl@0: 	if (file.gcount()!=2)
sl@0: 		return SourceFile ;
sl@0: 	if (sig[0]!='B'||sig[1]!='M')
sl@0: 		return SourceFile;
sl@0: 
sl@0: 	int ret = DoLoad(aFileName);
sl@0: 	if (!ret && aColor==EColorBitmapAlpha)
sl@0: 		{
sl@0: 		int fileNameLen = strlen(aFileName);
sl@0: 		char* alphaFileName = new char[fileNameLen + 7];// -alpha suffix is 6 chars, plus NUL termination
sl@0: 		if (alphaFileName == NULL)
sl@0: 			return NoMemory;
sl@0: 		int dotPos = -1;
sl@0: 		for (int i = 0; i < fileNameLen; ++i)
sl@0: 			if (aFileName[i]=='.')
sl@0: 				dotPos=i;
sl@0: 		int prefixLen = (dotPos>=0?dotPos:fileNameLen);
sl@0: 		memcpy(alphaFileName,aFileName,prefixLen);
sl@0: 		const char* suffix = "-alpha";
sl@0: 		memcpy(alphaFileName+prefixLen,suffix,6);
sl@0: 		if (dotPos>=0)
sl@0: 			memcpy(alphaFileName+prefixLen+6,aFileName+dotPos,fileNameLen-dotPos);
sl@0: 		*(alphaFileName + fileNameLen + 6) = '\0';
sl@0: 		ret = DoLoadAlpha(alphaFileName); // overlay alpha data from separate file
sl@0: 		delete [] alphaFileName;
sl@0: 		}
sl@0: 	if (!ret)
sl@0: 		ret = DoConvert(aBpp,aColor,aPbm);
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: int BitmapLoader::DoLoad(char* aFileName)
sl@0: 	{
sl@0: #if defined(__MSVCDOTNET__) || defined(__TOOLS2__)
sl@0: 	fstream file(aFileName, ios::in | ios::binary);
sl@0: #else //!__MSVCDOTNET__
sl@0: 	fstream file(aFileName, ios::in | ios::binary | ios::nocreate);
sl@0: #endif //__MSVCDOTNET__
sl@0: 	if (file.is_open()==0)
sl@0: 		return Files;
sl@0: 	TBitmapFileHeader bmpfile;
sl@0: 	long size=sizeof(TBitmapFileHeader);
sl@0: 	file.read((char *)&bmpfile,size);
sl@0: 	if (file.gcount()!=size)
sl@0: 		return SourceFile;
sl@0: 	size=sizeof(TBitmapInfoHeader);
sl@0: 	file.read((char *)&iBmpHeader,size);
sl@0: 	if (file.gcount()!=size)
sl@0: 		return SourceFile;
sl@0: 	if (iBmpHeader.biCompression != 0)
sl@0: 		return UnknownCompression;
sl@0: 	size=bmpfile.bfSize-sizeof(TBitmapInfoHeader)-sizeof(TBitmapFileHeader);
sl@0: 	long bitcount=iBmpHeader.biBitCount;
sl@0: 	long colors=iBmpHeader.biClrUsed;
sl@0: 	if (colors==0)
sl@0: 		{
sl@0: 		if (bitcount==24)
sl@0: 			iNumBmpColors=0;
sl@0: 		else if (bitcount==32)
sl@0: 			iNumBmpColors=0;//See MSDN - BITMAPFILEHEADER and BITMAPINFOHEADER structures.
sl@0:                             //If biCompression is 0 - we don't have TRgbQuad array! 
sl@0: 		else
sl@0: 			iNumBmpColors=1<<bitcount;
sl@0: 		}
sl@0: 	else
sl@0: 		iNumBmpColors=colors;
sl@0: 	if (iNumBmpColors > 256)
sl@0: 		return SourceFile;
sl@0: 	if (iNumBmpColors>0)
sl@0: 		{
sl@0: 		iBmpColors = new TRgbQuad[iNumBmpColors];
sl@0: 		if (iBmpColors == NULL)
sl@0: 			return NoMemory;
sl@0: 		memset(iBmpColors,0,iNumBmpColors*sizeof(TRgbQuad));
sl@0: 		}
sl@0: 	size-=iNumBmpColors*sizeof(TRgbQuad);
sl@0: 	iBmpBits = new char[size];
sl@0: 	if (iBmpBits == NULL)
sl@0: 		return NoMemory;
sl@0: 	memset(iBmpBits,0xff,size);
sl@0: 	// DEF102183: Graphics tools fail to run after building with MS VC8.
sl@0: 	if(iBmpColors != NULL)
sl@0: 	    {
sl@0: 		file.read((char *)iBmpColors,iNumBmpColors*sizeof(TRgbQuad));
sl@0: 		if (file.gcount()!=(int)(iNumBmpColors*sizeof(TRgbQuad)))
sl@0: 			return SourceFile;
sl@0: 	    }
sl@0: 	file.read(iBmpBits,size);
sl@0: 	file.close();
sl@0: 	if (file.gcount()!=size)
sl@0: 		return SourceFile;
sl@0: 	return NoError;
sl@0: 	}
sl@0: 
sl@0: int BitmapLoader::DoLoadAlpha(char* aAlphaFileName)
sl@0: 	{
sl@0: #if defined(__MSVCDOTNET__) || defined(__TOOLS2__)
sl@0: 	fstream file(aAlphaFileName, ios::in | ios::binary);
sl@0: #else //!__MSVCDOTNET__
sl@0: 	fstream file(aAlphaFileName, ios::in | ios::binary | ios::nocreate);
sl@0: #endif //__MSVCDOTNET__
sl@0: 	if (file.is_open()==0)
sl@0: 		return AlphaFiles;
sl@0: 	TBitmapFileHeader alphaBmpfile;
sl@0: 	long size=sizeof(TBitmapFileHeader);
sl@0: 	file.read((char *)&alphaBmpfile,size);
sl@0: 	if (file.gcount()!=size)
sl@0: 		return SourceFile;
sl@0: 	size=sizeof(TBitmapInfoHeader);
sl@0: 	TBitmapInfoHeader alphaBmpInfo;
sl@0: 	file.read((char *)&alphaBmpInfo,size);
sl@0: 	if (file.gcount()!=size)
sl@0: 		return SourceFile;
sl@0: 	if (alphaBmpInfo.biCompression != 0)
sl@0: 		return UnknownCompression;
sl@0: 	if (alphaBmpInfo.biWidth != iBmpHeader.biWidth || alphaBmpInfo.biHeight != iBmpHeader.biHeight)
sl@0: 		return AlphaDimensions;
sl@0: 	if (alphaBmpInfo.biBitCount != 8)
sl@0: 		return AlphaBpp;
sl@0: 	size=alphaBmpfile.bfSize-sizeof(TBitmapInfoHeader)-sizeof(TBitmapFileHeader);
sl@0: 	long numBmpColors=alphaBmpInfo.biClrUsed;
sl@0: 	if (numBmpColors == 0)
sl@0: 		numBmpColors = 256;
sl@0: 	if (numBmpColors != 256)
sl@0: 		return SourceFile;
sl@0: 	size-=numBmpColors*sizeof(TRgbQuad);
sl@0: 	iAlphaBits = new char[size];
sl@0: 	if (iAlphaBits == NULL)
sl@0: 		{
sl@0: 		return NoMemory;
sl@0: 		}
sl@0: 	memset(iAlphaBits,0xff,size);
sl@0: 	char* bmpColors = new char[numBmpColors*sizeof(TRgbQuad)];
sl@0: 	file.read((char *)bmpColors,numBmpColors*sizeof(TRgbQuad));
sl@0: 	delete [] bmpColors; // we aren't interested in the palette data for the 8bpp grayscale alpha bmp
sl@0: 	if (file.gcount()!=(int)(numBmpColors*sizeof(TRgbQuad)))
sl@0: 		return SourceFile;
sl@0: 	file.read(iAlphaBits,size);
sl@0: 	file.close();
sl@0: 	if (file.gcount()!=size)
sl@0: 		return SourceFile;
sl@0: 	return NoError;
sl@0: 	}
sl@0: 
sl@0: TRgb BitmapLoader::GetBmpPixel(long aXCoord,long aYCoord)
sl@0: 	{
sl@0: 	TRgb darkgray(128,128,128);
sl@0: 	TRgb darkgrayex(127,127,127);
sl@0: 	TRgb lightgray(192,192,192);
sl@0: 	TRgb lightgrayex(187,187,187);
sl@0: 	unsigned char col;
sl@0: 	TRgb color;
sl@0: 
sl@0: 	switch(iBmpHeader.biBitCount)
sl@0: 		{
sl@0: 		case 1:
sl@0: 			col=iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*(((iBmpHeader.biWidth+31)>>5)<<2)+(aXCoord>>3)];
sl@0: 			col&=(0x80>>(aXCoord%8));
sl@0: 			if (iBmpColors)
sl@0: 				{
sl@0: 				TRgbQuad rgbq;
sl@0: 				if (col)
sl@0: 					rgbq = iBmpColors[1];
sl@0: 				else
sl@0: 					rgbq = iBmpColors[0];
sl@0: 				color = TRgb(rgbq.iRed,rgbq.iGreen,rgbq.iBlue);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				if (col)
sl@0: 					color = TRgb(0x00ffffff);
sl@0: 				else
sl@0: 					color = TRgb(0);
sl@0: 				}
sl@0: 			break;
sl@0: 		case 4:
sl@0: 			col=iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*(((iBmpHeader.biWidth+7)>>3)<<2)+(aXCoord>>1)];
sl@0: 			if (aXCoord%2==0)
sl@0: 				col=(unsigned char)(col>>4);
sl@0: 			col&=0x0f;
sl@0: 			if (iBmpColors)
sl@0: 				{
sl@0: 				TRgbQuad rgbq = iBmpColors[col];
sl@0: 				color = TRgb(rgbq.iRed,rgbq.iGreen,rgbq.iBlue);
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				col *= 17;
sl@0: 				color = TRgb(col,col,col);
sl@0: 				}
sl@0: 			break;
sl@0: 		case 8:
sl@0: 			col=iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*((iBmpHeader.biWidth+3)&~3)+aXCoord];
sl@0: 			if (iBmpColors)
sl@0: 				{
sl@0: 				TRgbQuad rgbq = iBmpColors[col];
sl@0: 				color = TRgb(rgbq.iRed,rgbq.iGreen,rgbq.iBlue);
sl@0: 				}
sl@0: 			else
sl@0: 				color = TRgb(col,col,col);
sl@0: 			break;
sl@0: 		case 16:
sl@0: 			{
sl@0: 			unsigned short int* wordptr = (unsigned short int*)&iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*(((iBmpHeader.biWidth+1)&~1)<<1)+(aXCoord<<1)];
sl@0: 			color = TRgb((*wordptr&0x7c)>>10,(*wordptr&0x3e)>>5,(*wordptr&0x1f));
sl@0: 			}
sl@0: 			break;
sl@0: 		case 24:
sl@0: 			{
sl@0: 			TRgbTriple rgbcol = *((TRgbTriple *)&(iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*((3*iBmpHeader.biWidth+3)&~3)+aXCoord+(aXCoord<<1)]));
sl@0: 			color = TRgb(rgbcol.rgbtRed,rgbcol.rgbtGreen,rgbcol.rgbtBlue);
sl@0: 			}
sl@0: 			break;
sl@0: 		case 32:
sl@0: 			{
sl@0: 			unsigned long int* dwordptr = (unsigned long int*)&iBmpBits[(iBmpHeader.biHeight-aYCoord-1)*((iBmpHeader.biWidth)<<2)+(aXCoord<<2)];
sl@0: 			color = TRgb((*dwordptr&0xff0000)>>16,(*dwordptr&0xff00)>>8,*dwordptr&0xff);
sl@0: 			}
sl@0: 			break;
sl@0: 		default:
sl@0: 			break;
sl@0: 		}
sl@0: 	if (color == darkgray)
sl@0: 		color = darkgrayex;
sl@0: 	else if (color == lightgray)
sl@0: 		color = lightgrayex;
sl@0: 	return color;
sl@0: 	}
sl@0: 
sl@0: unsigned char BitmapLoader::GetAlphaPixel(long aXCoord,long aYCoord)
sl@0: 	{
sl@0: 	return iAlphaBits[(iBmpHeader.biHeight-aYCoord-1)*((iBmpHeader.biWidth+3)&~3)+aXCoord];
sl@0: 	}
sl@0: 
sl@0: int BitmapLoader::DoConvert(int aBpp,TBitmapColor aColor,SEpocBitmapHeader*& aPbm)
sl@0: 	{
sl@0: 	bool useAlpha = (aColor==EColorBitmapAlpha || aColor==EColorBitmapAlphaPM);
sl@0: 	long desttwipswidth = 0;
sl@0: 	long desttwipsheight = 0;
sl@0: 
sl@0: 	long bytewidth = BitmapUtils::ByteWidth(iBmpHeader.biWidth,aBpp);
sl@0: 	long destlength = iBmpHeader.biHeight * bytewidth;
sl@0: 
sl@0: 	if (iBmpHeader.biXPelsPerMeter>0)
sl@0: 		desttwipswidth = iBmpHeader.biWidth*1440000/254/iBmpHeader.biXPelsPerMeter;
sl@0: 	if (iBmpHeader.biYPelsPerMeter>0)
sl@0: 		desttwipsheight = iBmpHeader.biHeight*1440000/254/iBmpHeader.biYPelsPerMeter;
sl@0: 
sl@0: 	aPbm = (SEpocBitmapHeader*)new char[sizeof(SEpocBitmapHeader) + destlength];
sl@0: 	if (aPbm == NULL)
sl@0: 		return NoMemory;
sl@0: 	memset(aPbm,0,sizeof(SEpocBitmapHeader));
sl@0: 
sl@0: 	// aBitmap->iByteWidth = bytewidth;
sl@0: 	// aBitmap->iDataOffset = sizeof(Bitmap);
sl@0: 
sl@0: 	aPbm->iBitmapSize = sizeof(SEpocBitmapHeader) + destlength;
sl@0: 	aPbm->iStructSize = sizeof(SEpocBitmapHeader);
sl@0: 	aPbm->iWidthInPixels = iBmpHeader.biWidth;
sl@0: 	aPbm->iHeightInPixels = iBmpHeader.biHeight;
sl@0: 	aPbm->iWidthInTwips = desttwipswidth;
sl@0: 	aPbm->iHeightInTwips = desttwipsheight;
sl@0: 	aPbm->iBitsPerPixel = aBpp;
sl@0: 	aPbm->iColor = aColor;
sl@0: 	aPbm->iPaletteEntries = 0;
sl@0: 	aPbm->iCompression = ENoBitmapCompression;
sl@0: 
sl@0: 	char* pbmBits = ((char*)aPbm) + sizeof(SEpocBitmapHeader);
sl@0: 	memset(pbmBits,0xff,destlength);
sl@0: 
sl@0: 	long col = 0;
sl@0: 	char* pixadd = 0;
sl@0: 
sl@0: 	switch(aBpp)
sl@0: 		{
sl@0: 	case 1:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb color=GetBmpPixel(xcrd,ycrd);
sl@0: 				col=color.Gray2();
sl@0: 				pixadd=&(pbmBits[ycrd*bytewidth+(xcrd>>3)]);
sl@0: 				(*pixadd)&=~(1<<((xcrd&7)));
sl@0: 				(*pixadd)|=(unsigned char)(col<<(xcrd&7));
sl@0: 				}
sl@0: 		}
sl@0: 		break;
sl@0: 	case 2:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb color=GetBmpPixel(xcrd,ycrd);
sl@0: 				col=color.Gray4();
sl@0: 				pixadd=&(pbmBits[ycrd*bytewidth+(xcrd>>2)]);
sl@0: 				(*pixadd)&=~(0x3<<(2*(xcrd%4)));
sl@0: 				(*pixadd)|=(unsigned char)(col<<(2*(xcrd%4)));
sl@0: 				}
sl@0: 		}
sl@0: 		break;
sl@0: 	case 4:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb color=GetBmpPixel(xcrd,ycrd);
sl@0: 				if (aColor == EMonochromeBitmap)
sl@0: 					col = color.Gray16();
sl@0: 				else
sl@0: 					col = color.Color16();
sl@0: 				pixadd=&(pbmBits[ycrd*bytewidth+(xcrd>>1)]);
sl@0: 				if (xcrd%2!=0)
sl@0: 					*pixadd=(unsigned char)((unsigned char)((col<<4)|(*pixadd&0x0f)));
sl@0: 				else
sl@0: 					*pixadd=(unsigned char)((unsigned char)(col|(*pixadd&0xf0)));
sl@0: 				}
sl@0: 		}
sl@0: 		break;
sl@0: 	case 8:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb color=GetBmpPixel(xcrd,ycrd);
sl@0: 				if (aColor == EMonochromeBitmap)
sl@0: 					col = color.Gray256();
sl@0: 				else
sl@0: 					col = color.Color256();
sl@0: 				pixadd=&(pbmBits[ycrd*((iBmpHeader.biWidth+3)&~3)+xcrd]);
sl@0: 				*pixadd=(unsigned char)col;
sl@0: 				}
sl@0: 		}
sl@0: 		break;
sl@0: 	case 12:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb color=GetBmpPixel(xcrd,ycrd);
sl@0: 				col=color.Color4K();
sl@0: 				pixadd=&(pbmBits[ycrd*bytewidth+(xcrd<<1)]);
sl@0: 				unsigned short* wordadd=(unsigned short*)pixadd;
sl@0: 				*wordadd=(unsigned short)col;
sl@0: 				}
sl@0: 		}
sl@0: 		break;
sl@0: 	case 16:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb color=GetBmpPixel(xcrd,ycrd);
sl@0: 				col=color.Color64K();
sl@0: 				pixadd=&(pbmBits[ycrd*bytewidth+(xcrd<<1)]);
sl@0: 				unsigned short* wordadd=(unsigned short*)pixadd;
sl@0: 				*wordadd=(unsigned short)col;
sl@0: 				}
sl@0: 		}
sl@0: 		break;
sl@0: 	case 24:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			{
sl@0: 			unsigned char* bytePtr = (unsigned char*)&pbmBits[ycrd*bytewidth];
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb col = GetBmpPixel(xcrd,ycrd);
sl@0: 				*bytePtr++ = (unsigned char) col.iBlue;
sl@0: 				*bytePtr++ = (unsigned char) col.iGreen;
sl@0: 				*bytePtr++ = (unsigned char) col.iRed;
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 		break;
sl@0: 	case 32:
sl@0: 		{
sl@0: 		for(long ycrd=0;ycrd<iBmpHeader.biHeight;ycrd++)
sl@0: 			{
sl@0: 			unsigned char* bytePtr = (unsigned char*)&pbmBits[ycrd*bytewidth];
sl@0: 			for(long xcrd=0;xcrd<iBmpHeader.biWidth;xcrd++)
sl@0: 				{
sl@0: 				TRgb col = GetBmpPixel(xcrd,ycrd);
sl@0: 				unsigned char alpha = useAlpha?GetAlphaPixel(xcrd,ycrd):(unsigned char)0;
sl@0: 				*bytePtr++ = (unsigned char) col.iBlue;
sl@0: 				*bytePtr++ = (unsigned char) col.iGreen;
sl@0: 				*bytePtr++ = (unsigned char) col.iRed;
sl@0: 				*bytePtr++ = alpha;	
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 		break;
sl@0: 		};
sl@0: 
sl@0: 	return NoError;
sl@0: 	}
sl@0: