1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "BMCONV.H"

    17 #include <stdlib.h>

    18 #include <ctype.h>

    19 #include <sys/stat.h>

    20 

    21 extern TRgb* color256Palette;

    22 extern char* color256InversePalette;

    23 

    24 static inline bool CanCopy16bppData(const char* aDest, const char* aDestEnd, int aDataSize)

    25 	{

    26 	const char* aDestNew = 	aDest + (aDataSize / 128) * (256 + 1) + //(2 * 128) bytes data + 1 leading byte

    27 		                            (aDataSize % 128 ? (aDataSize % 128) * 2 + 1 : 0);

    28 	return aDestNew <= aDestEnd;

    29 	}

    30 

    31 static inline bool CanWrite16bppValue(const char* aDest, const char* aDestEnd, int aDataSize)

    32 	{

    33 	const char* aDestNew = 	aDest + (aDataSize / 128) * (2 + 1) + //2 bytes data + 1 leading byte

    34 		                            (aDataSize % 128 ? 2 + 1 : 0);

    35 	return aDestNew <= aDestEnd;

    36 	}

    37 

    38 static inline bool CanCopy8bppData(const char* aDest, const char* aDestEnd, int aDataSize)

    39 	{

    40 	const char* aDestNew = 	aDest + (aDataSize / 128) * (128 + 1) + //128 bytes data + 1 leading byte

    41 		                            (aDataSize % 128 ? (aDataSize % 128) + 1 : 0);

    42 	return aDestNew <= aDestEnd;

    43 	}

    44 

    45 static inline bool CanWrite8bppValue(const char* aDest, const char* aDestEnd, int aDataSize)

    46 	{

    47 	const char* aDestNew = 	aDest + (aDataSize / 128) * (1 + 1) + //1 byte data + 1 leading byte

    48 		                            (aDataSize % 128 ? 1 + 1 : 0);

    49 	return aDestNew <= aDestEnd;

    50 	}

    51 

    52 static inline bool CanCopy24bppData(const char* aDest, const char* aDestEnd, int aDataSize)

    53 	{

    54 	const char* aDestNew = 	aDest + (aDataSize / 128) * (384 + 1) + //(128 * 3) bytes data + 1 leading byte

    55 		                            (aDataSize % 128 ? (aDataSize % 128) * 3 + 1 : 0);

    56 	return aDestNew <= aDestEnd;

    57 	}

    58 

    59 static inline bool CanWrite24bppValue(const char* aDest, const char* aDestEnd, int aDataSize)

    60 	{

    61 	const char* aDestNew = 	aDest + (aDataSize / 128) * (3 + 1) + //3 bytes data + 1 leading byte

    62 		                            (aDataSize % 128 ? 3 + 1 : 0);

    63 	return aDestNew <= aDestEnd;

    64 	}

    65 

    66 static inline bool CanCopy32bppData(const char* aDest, const char* aDestEnd, int aDataSize)

    67 	{

    68 	const char* aDestNew = 	aDest + (aDataSize / 128) * (512 + 1) + //(128 * 4) bytes data + 1 leading byte

    69 		                            (aDataSize % 128 ? (aDataSize % 128) * 4 + 1 : 0);

    70 	return aDestNew <= aDestEnd;

    71 	}

    72 

    73 static inline bool CanWrite32bppValue(const char* aDest, const char* aDestEnd, int aDataSize)

    74 	{

    75 	const char* aDestNew = 	aDest + (aDataSize / 128) * (4 + 1) + //4 bytes data + 1 leading byte

    76 		                            (aDataSize % 128 ? 4 + 1 : 0);

    77 	return aDestNew <= aDestEnd;

    78 	}

    79 

    80 BitmapCompiler::BitmapCompiler(char* aSourcefilenames[],int aNumSources):

    81 	iSourcefilenames(aSourcefilenames),

    82 	iPbmSources(NULL),

    83 	iNumSources(aNumSources)

    84 	{}

    85 

    86 BitmapCompiler::~BitmapCompiler()

    87 	{

    88 	iDestFile.close();

    89 	if(iPbmSources)

    90 		for(int count=0;count<iNumSources;count++)

    91 			delete iPbmSources[count];

    92 	delete [] iPbmSources;

    93 	iPbmSources = NULL;

    94 	}

    95 

    96 int BitmapCompiler::Compile(TStoreType aSt,int aCompress,char* aDestfilename,char* aHeaderFilename,char* aPaletteFilename)

    97 	{

    98 	int ret = LoadPalette(aPaletteFilename);

    99 	if (ret)

   100 		return ret;

   101 

   102 	iDestFile.open(aDestfilename, ios::out | ios::binary);

   103 	if(iDestFile.is_open()==0)

   104 		return DestFile;

   105 	if (iNumSources < 1)

   106 		return SourceFile;

   107 

   108 	if (iNumSources==1 && ((iSourcefilenames[0][0]==OPTCHAR || iSourcefilenames[0][0]==ALTERNATE_OPTCHAR)) && iSourcefilenames[0][1]=='m')

   109 		{

   110 		// Source is an existing MBM file, presumably because we want to convert

   111 		// a filestore into a ROM image.

   112 		if (aHeaderFilename)

   113 			{

   114 			cout << "Header file generation is not permitted with /m or -m\n";

   115 			aHeaderFilename = NULL;

   116 			}

   117 		iSourcefilenames[0]+=2;

   118 		EpocLoader pl;

   119 		int romFormat;

   120 		ret = pl.EpocBitmapCount(iSourcefilenames[0], iNumSources, romFormat);

   121 		if (!ret)

   122 			ret = LoadPbmFile(iSourcefilenames[0]);

   123 		}

   124 	else

   125 		{

   126 		// Read the usual list of [OPT]bmp_n source bitmaps.

   127 		ret = LoadSourcefiles();

   128 		}

   129 	if (ret)

   130 		return ret;

   131 

   132 	ret = CreateHeader(aHeaderFilename);

   133 	if (ret)

   134 		return ret;

   135 

   136 	if (aSt == ERomStore || aSt == ECompressedRomStore)

   137 		ret = RomImage(aSt == ECompressedRomStore);

   138 	else

   139 		ret = FileImage(aCompress);

   140 	return ret;

   141 	};

   142 

   143 int BitmapCompiler::AllocatePbmSourcesArray()

   144 	{

   145 	iPbmSources = new SEpocBitmapHeader*[iNumSources];

   146 	if(iPbmSources == NULL)

   147 		return NoMemory;

   148 

   149 	memset(iPbmSources,0xff,sizeof(SEpocBitmapHeader*)*iNumSources);

   150 	int count;

   151 	for(count=0;count<iNumSources;count++)

   152 		iPbmSources[count]=NULL;

   153 	return NoError;

   154 	}

   155 

   156 int BitmapCompiler::LoadSourcefiles()

   157 	{

   158 	int ret = AllocatePbmSourcesArray();

   159 	if (ret)

   160 		return ret;

   161 	for(int count=0;count<iNumSources;count++)

   162 		{

   163 		bool useAlpha = false;

   164 		int bpp = 2;

   165 		TBitmapColor color = EMonochromeBitmap;

   166 		BitmapLoader bmpload;

   167 		if(iSourcefilenames[count][0]==OPTCHAR || iSourcefilenames[count][0]==ALTERNATE_OPTCHAR)

   168 			{

   169 			iSourcefilenames[count]++;

   170 			if(iSourcefilenames[count][0]=='c')

   171 				{

   172 				color = EColorBitmap;

   173 				iSourcefilenames[count]++;

   174 				}

   175 			bpp=iSourcefilenames[count][0]-'0';

   176 			iSourcefilenames[count]++;

   177 			int next=iSourcefilenames[count][0]-'0';

   178 			if(next==2 || next==6 || next==4)

   179 				{

   180 				bpp=bpp*10+next;

   181 				iSourcefilenames[count]++;

   182 				}

   183 			if(iSourcefilenames[count][0]=='a')

   184 				{

   185 				useAlpha = true;

   186 				iSourcefilenames[count]++;

   187 				if (color!=EColorBitmap || bpp!=32)

   188 					return Bpp;

   189 				}

   190 			if (color == EColorBitmap && bpp!=4 && bpp!=8 && bpp!=12 && bpp!=16 && bpp!=24 && bpp!=32)

   191 				return Bpp;

   192 			if (color == EMonochromeBitmap && bpp!=1 && bpp!=2 && bpp!=4 && bpp!=8)

   193 				return Bpp;

   194 			}

   195 		if (color == EColorBitmap && useAlpha)

   196 			color = EColorBitmapAlpha;

   197 		ret = bmpload.LoadBitmap(iSourcefilenames[count],bpp,color,iPbmSources[count]);

   198 		if (ret)

   199 			return ret;

   200 		}

   201 	return NoError;

   202 	}

   203 

   204 int BitmapCompiler::LoadPbmFile(char* aPbmFilename)

   205 	{

   206 	int ret = AllocatePbmSourcesArray();

   207 	if (ret)

   208 		return ret;

   209 	for(int count=0;count<iNumSources;count++)

   210 		{

   211 		EpocLoader pl;

   212 		ret = pl.LoadEpocBitmap(aPbmFilename,count);

   213 		if (!ret)

   214 			ret = pl.DupBitmap(iPbmSources[count]);

   215 		if (ret)

   216 			return ret;

   217 		}

   218 	return NoError;

   219 	}

   220 

   221 int BitmapCompiler::RomImage(bool aCompress)

   222 	{

   223 	int count=0;

   224 

   225 	if (aCompress)

   226 		{

   227 		for(; count<iNumSources; count++)

   228 			{

   229 			int ret = CompressBitmap(iPbmSources[count]);

   230 			if (ret)

   231 				return ret;

   232 			}

   233 		}

   234 

   235 	int ret = WriteRomheader();

   236 	if (ret)

   237 		return ret;

   238 

   239 	for(count=0;count<iNumSources;count++)

   240 		{

   241 		ret = WriteRombitmap(iPbmSources[count]);

   242 		if (ret)

   243 			return ret;

   244 		}

   245 	return NoError;

   246 	}

   247 

   248 int BitmapCompiler::FileImage(int aCompress)

   249 	{

   250 	int count = 0;

   251 	if(aCompress)

   252 		{

   253 		for(;count<iNumSources;count++)

   254 			{

   255 			int ret = CompressBitmap(iPbmSources[count]);

   256 			if(ret)

   257 				return ret;

   258 			}

   259 		}

   260 	int ret = WriteFileheader();

   261 	if (ret)

   262 		return ret;

   263 	for (count=0;count<iNumSources;count++)

   264 		{

   265 		ret = WriteFilebitmap(iPbmSources[count]);

   266 		if (ret)

   267 			return ret;

   268 		}

   269 	ret = WriteHeadStream();

   270 	return ret;

   271 	}

   272 

   273 int BitmapCompiler::WriteRomheader()

   274 	{

   275 	iDestFile.write((char*)&KMultiBitmapRomImageUid,4);

   276 	iDestFile.write((char*)&iNumSources,4);

   277 	int byteswritten=8+(iNumSources*4);

   278 	for (int count=0;count<iNumSources;count++)

   279 		{

   280 		iDestFile.write((char*)&byteswritten,4);

   281 		byteswritten+=(((iPbmSources[count]->iBitmapSize)+3)/4*4)-sizeof(SEpocBitmapHeader)+sizeof(Bitmap);

   282 		}

   283 	return NoError;

   284 	}

   285 

   286 int BitmapCompiler::WriteRombitmap(SEpocBitmapHeader* aPbm)

   287 	{

   288 	if (aPbm->iPaletteEntries != 0)

   289 	    return PaletteSupportNotImplemented;

   290 

   291 	int bitmapsize = aPbm->iBitmapSize-sizeof(SEpocBitmapHeader)+sizeof(Bitmap);

   292 	bitmapsize = ((bitmapsize+3)/4)*4;

   293 

   294 	char* buffer = new char[bitmapsize];

   295 	if (buffer == NULL)

   296 		return NoMemory;

   297 	memset(buffer,0xff,bitmapsize);

   298 

   299 	Bitmap* bmp = (Bitmap*)buffer;

   300 	bmp->iUid=KCBitwiseBitmapUid;

   301 	TBitmapColor color = aPbm->iColor;

   302 

   303 	switch(aPbm->iBitsPerPixel)

   304 		{ // for corresponding enums, see TDisplayMode in <gdi.h>

   305 	case 1:

   306 		bmp->iDispMode=1;

   307 		break;

   308 	case 2:

   309 		bmp->iDispMode=2;

   310 		break;

   311 	case 4:

   312 		if (color == EMonochromeBitmap)

   313 			bmp->iDispMode=3;

   314 		else

   315 			bmp->iDispMode=5;

   316 		break;

   317 	case 8:

   318 		if (color == EMonochromeBitmap)

   319 			bmp->iDispMode=4;

   320 		else

   321 			bmp->iDispMode=6;

   322 		break;

   323 	case 12:

   324 		bmp->iDispMode=10;

   325 		break;

   326 	case 16:

   327 		bmp->iDispMode=7;

   328 		break;

   329 	case 24:

   330 		bmp->iDispMode=8;

   331 		break;

   332 	case 32:

   333 		if (color == EColorBitmapAlpha)

   334 			bmp->iDispMode=12; // Color16MA

   335 		else

   336 			bmp->iDispMode=11; // Color16MU

   337 		break;

   338 	default:

   339 		delete [] buffer;

   340 		return SourceFile;

   341 		}

   342 

   343 	bmp->iHeap = NULL;

   344 	bmp->iPile = NULL;

   345 	bmp->iHeader = *aPbm;

   346 	bmp->iByteWidth = BitmapUtils::ByteWidth(bmp->iHeader.iWidthInPixels,bmp->iHeader.iBitsPerPixel);

   347 	bmp->iDataOffset = sizeof(Bitmap);

   348 

   349 	CopyTail(buffer + sizeof(Bitmap), aPbm, aPbm->iBitmapSize, sizeof(SEpocBitmapHeader));

   350 	iDestFile.write(buffer,bitmapsize);

   351 

   352 	delete [] buffer;

   353 

   354 	return NoError;

   355 	}

   356 

   357 int BitmapCompiler::WriteFileheader()

   358 	{

   359 	int zero=0;

   360 	iDestFile.write((char*)&KWriteOnceFileStoreUid,4);

   361 	iDestFile.write((char*)&KMultiBitmapFileImageUid,4);

   362 	iDestFile.write((char*)&zero,4);

   363 	iDestFile.write((char*)&KMultiBitmapFileImageChecksum,4);

   364 	int byteswritten=16;

   365 	for(int count=0;count<iNumSources;count++)

   366 		{

   367 		byteswritten+=iPbmSources[count]->iBitmapSize;

   368 		}

   369 	byteswritten+=4;

   370 	iDestFile.write((char*)&byteswritten,4);

   371 	return NoError;

   372 	}

   373 

   374 int BitmapCompiler::WriteHeadStream()

   375 	{

   376 	iDestFile.write((char*)&iNumSources,4);

   377 	int byteswritten=20;

   378 	for(int count=0;count<iNumSources;count++)

   379 		{

   380 		iDestFile.write((char*)&byteswritten,4);

   381 		byteswritten+=iPbmSources[count]->iBitmapSize;

   382 		}

   383 	return NoError;

   384 	}

   385 

   386 int BitmapCompiler::WriteFilebitmap(SEpocBitmapHeader* aPbm)

   387 	{

   388 	if (aPbm->iPaletteEntries != 0)

   389 		return PaletteSupportNotImplemented;

   390 

   391 	int dataSize = aPbm->iBitmapSize - sizeof(SEpocBitmapHeader);

   392 

   393 	iDestFile.write((char*)(aPbm),sizeof(SEpocBitmapHeader));

   394 	// WritePalette()

   395 	iDestFile.write(((char*)(aPbm)) + sizeof(SEpocBitmapHeader),dataSize);

   396 

   397 	return NoError;

   398 	}

   399 

   400 void BitmapCompiler::WritePalette()

   401 	{

   402 	for (int index = 0; index < 256; index++)

   403 		{

   404 		iDestFile.write((char*)(&iPalette[index]),3);

   405 		}

   406 	}

   407 

   408 int BitmapCompiler::LoadPalette(char* aPaletteFilename)

   409 	{

   410 	if (!aPaletteFilename)

   411 		{

   412 		iDefaultPalette = 1;

   413 		return NoError;

   414 		}

   415 

   416 	iDefaultPalette = 0;

   417 	color256Palette = iPalette;

   418 	color256InversePalette = iInversePalette;

   419 

   420 	struct stat fileinfo;

   421 	if (stat(aPaletteFilename,&fileinfo)==-1)

   422 		return CommandFile;

   423 

   424 	int filesize = fileinfo.st_size;

   425 	if (filesize == 0)

   426 		return PaletteFile;

   427 

   428 #if defined(__MSVCDOTNET__) || defined(__TOOLS2__)

   429 	fstream paletteFile(aPaletteFilename, ios::in | ios::binary);

   430 #else

   431 	fstream paletteFile(aPaletteFilename, ios::in | ios::binary | ios::nocreate);

   432 #endif

   433 

   434 	if(!paletteFile.is_open())

   435 		return PaletteFile;

   436 

   437 	char* paletteData = new char[filesize];

   438 	if (!paletteData)

   439 		return NoMemory;

   440 

   441 	memset(paletteData,0,filesize);

   442 	paletteFile.read(paletteData,filesize);

   443 	paletteFile.close();

   444 

   445 	char* dataPtr = (char*)paletteData;

   446 	char* dataPtrLimit = dataPtr + filesize;

   447 

   448 	for (int index = 0; index < 256; index++)

   449 		{

   450 		char hexBuf[10];

   451 		int ret = ReadHexString(hexBuf,dataPtr,dataPtrLimit);

   452 		if (ret)

   453 			{

   454 			delete paletteData;

   455 			return ret;

   456 			}

   457 

   458 		int red = HexToInt(hexBuf[8],hexBuf[9]);

   459 		int green = HexToInt(hexBuf[6],hexBuf[7]);

   460 		int blue = HexToInt(hexBuf[4],hexBuf[5]);

   461 

   462 		iPalette[index] = TRgb(red,green,blue);

   463 		}

   464 

   465 	delete paletteData;

   466 	CalculateInversePalette();

   467 	return NoError;

   468 	}

   469 

   470 void BitmapCompiler::CalculateInversePalette()

   471 	{

   472 	for (int index = 0; index < 4096; index++)

   473 		{

   474 		TRgb color = TRgb((index & 0x00f) * 17,((index & 0x0f0) >> 4) * 17,((index & 0xf00) >> 8) * 17);

   475 

   476 		int nearest = 0;

   477 		int distance = iPalette[0].Difference(color);

   478 

   479 		for (int paletteIndex = 0; paletteIndex < 256; paletteIndex++)

   480 			{

   481 			TRgb paletteColor = iPalette[paletteIndex];

   482 

   483 			if (paletteColor == color)

   484 				{

   485 				nearest = paletteIndex;

   486 				break;

   487 				}

   488 

   489 			int paletteDistance = paletteColor.Difference(color);

   490 			if (paletteDistance < distance)

   491 				{

   492 				nearest = paletteIndex;

   493 				distance = paletteDistance;

   494 				}

   495 			}

   496 

   497 		iInversePalette[index] = (char)nearest;

   498 		TRgb palColor = iPalette[nearest];

   499 		color = palColor;

   500 		}

   501 	}

   502 

   503 int BitmapCompiler::CreateHeader(char* aHeaderFilename)

   504 	{

   505 	if (!aHeaderFilename)

   506 		return NoError;

   507 

   508 	fstream hf(aHeaderFilename,ios::out);

   509 	if(!hf.is_open())

   510 		return DestFile;

   511 

   512 	char* basename = strrchr(aHeaderFilename,'\\');

   513 	if (basename==0)

   514 		basename = aHeaderFilename;

   515 	else

   516 		basename++;	// skip directory separator

   517 

   518 	char unadornedFile[256];

   519 	strcpy(unadornedFile, UnadornedName(aHeaderFilename));

   520 

   521 	hf << "// " << basename << "\n";

   522 	hf << "// Generated by BitmapCompiler\n";

   523 	hf << "// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).\n";

   524 	hf << "//\n\n";

   525 	hf << "enum TMbm" << unadornedFile << "\n";

   526 	hf << "\t{\n";

   527 

   528 	for (int count=0;count<iNumSources;count++)

   529 		{

   530 		hf << "\tEMbm" << unadornedFile << UnadornedName(iSourcefilenames[count]);

   531 		if(count<iNumSources-1)

   532 			hf << ',';

   533 		hf << '\n';

   534 		}

   535 	hf << "\t};\n";

   536 	hf.close();

   537 	return NoError;

   538 	}

   539 

   540 char* BitmapCompiler::UnadornedName(char* aName)

   541 	{

   542 	int len = strlen(aName);

   543 

   544 	char* foundDir = strrchr(aName,'\\');

   545 	char* foundUrl = strrchr(aName,'/');

   546 	char* foundExt = strrchr(aName,'.');

   547 

   548 	char* foundPath = (foundDir > foundUrl) ? foundDir : foundUrl;

   549 	char* firstchar = (foundPath > 0) ? foundPath + 1 : aName;

   550 	char* lastchar = (foundExt > firstchar) ? foundExt : aName+len;

   551 

   552 	static char result[256];

   553 	if (lastchar-firstchar > 255)

   554 		{

   555 		strcpy(result,"NameTooLong");

   556 		return result;

   557 		}

   558 	int i=0;

   559 	result[0] = (char)toupper(*firstchar);

   560 	firstchar+=1;

   561 	for (i=1; firstchar<lastchar; i++,firstchar++)

   562 		{

   563 		result[i] = (char)tolower(*firstchar);

   564 		}

   565 	result[i] = '\0';

   566 	return result;

   567 	}

   568 

   569 int BitmapCompiler::CompressBitmap(SEpocBitmapHeader*& aPbm)

   570 	{

   571 	int originalsize = aPbm->iBitmapSize-sizeof(SEpocBitmapHeader);

   572 	char* newbits=new char[originalsize+sizeof(SEpocBitmapHeader)];

   573 	if(!newbits)

   574 		return NoMemory;

   575 

   576 	memset(newbits,0xff,sizeof(SEpocBitmapHeader)+originalsize);

   577 	memcpy(newbits,aPbm,sizeof(SEpocBitmapHeader));

   578 	char* newbitsptr=newbits+sizeof(SEpocBitmapHeader);

   579 	char* oldbits=((char*)(aPbm))+sizeof(SEpocBitmapHeader);

   580 

   581 	TBitmapfileCompression compression = ENoBitmapCompression;

   582 	int ret = NoCompression;

   583 

   584 	if (aPbm->iBitsPerPixel <= 8)

   585 		{

   586 		compression = EByteRLECompression;

   587 		ret = CompressByteData(newbitsptr,oldbits,originalsize);

   588 		}

   589 	else if (aPbm->iBitsPerPixel == 12)

   590 		{

   591 		compression = ETwelveBitRLECompression;

   592 		ret = CompressTwelveBitData(newbitsptr,oldbits,originalsize);

   593 		}

   594 	else if (aPbm->iBitsPerPixel == 16)

   595 		{

   596 		compression = ESixteenBitRLECompression;

   597 		ret = CompressSixteenBitData(newbitsptr,oldbits,originalsize);

   598 		}

   599 	else if (aPbm->iBitsPerPixel == 24)

   600 		{

   601 		compression = ETwentyFourBitRLECompression;

   602 		ret = CompressTwentyFourBitData(newbitsptr,oldbits,originalsize);

   603 		}

   604 	else if (aPbm->iBitsPerPixel == 32 && (aPbm->iColor == EColorBitmap))

   605 		{

   606 		compression = EThirtyTwoUBitRLECompression;

   607 		ret = CompressThirtyTwoUBitData(newbitsptr,oldbits,originalsize);

   608 		}

   609 	else if (aPbm->iBitsPerPixel == 32 && (aPbm->iColor == EColorBitmapAlpha))

   610 		{

   611 		compression = EThirtyTwoABitRLECompression;

   612 		ret = CompressThirtyTwoABitData(newbitsptr,oldbits,originalsize);

   613 		}

   614 

   615 	if(ret)

   616 		{

   617 		delete [] newbits;

   618 		if(ret>0)

   619 			return ret;

   620 		return NoError;

   621 		}

   622 

   623 	delete aPbm;

   624 	aPbm = (SEpocBitmapHeader*)newbits;

   625 	aPbm->iBitmapSize = newbitsptr-(newbits+sizeof(SEpocBitmapHeader))+sizeof(SEpocBitmapHeader);

   626 	aPbm->iCompression = compression;

   627 	return NoError;

   628 	}

   629 

   630 int BitmapCompiler::CompressByteData(char*& aDest,char* aSrce,int aSize)

   631 	{

   632 	const char* destEnd = aDest + aSize;

   633 	char* bytepointer=aSrce;

   634 	char* limitpointer=bytepointer+aSize;

   635 	int margin = (aSize>>6);

   636 	char* limitmargin = limitpointer - ((margin > 4) ? margin : 4);

   637 	char* cutoffpointer=aDest+(aSize>>1)+(aSize>>2);

   638 	int ret=NoError;

   639 	char* oldbytepointer=NULL;

   640 	while(bytepointer<limitmargin)

   641 		{

   642 		char value=*bytepointer;

   643 		if(*(bytepointer+1)==value && *(bytepointer+2)==value)

   644 			{

   645 			oldbytepointer=bytepointer;

   646 			bytepointer+=3;

   647 			while ( ( bytepointer < limitmargin ) && ( *bytepointer == value ) )

   648 				bytepointer++;

   649 			ret = WriteCompressedByteValues(aDest,value,bytepointer-oldbytepointer, destEnd);

   650 			if(ret) return ret;

   651 			}

   652 		else

   653 			{

   654 			oldbytepointer=bytepointer;

   655 			while((bytepointer<limitmargin) && (*(bytepointer+1)!=value || *(bytepointer+2)!=value))

   656 				{

   657 				bytepointer++;

   658 				value=*bytepointer;

   659 				}

   660 			ret = WriteCompressedByteData(aDest,oldbytepointer,bytepointer-oldbytepointer, destEnd);

   661 			if(ret) return ret;

   662 			}

   663 		if(aDest>cutoffpointer)

   664 			return NoCompression;

   665 		}

   666 

   667 	int remaining = limitpointer-bytepointer;

   668 	if(remaining > 0)

   669 		{

   670 		if (aDest + remaining > cutoffpointer)

   671 			return NoCompression;

   672 		ret=WriteCompressedByteData(aDest,bytepointer,remaining, destEnd);

   673 		if(ret) return ret;

   674 		}

   675 	return NoError;

   676 	}

   677 

   678 int BitmapCompiler::WriteCompressedByteData(char*& aDest,char* aData,int aLength, const char* aDestEnd)

   679 	{

   680 	if(!CanCopy8bppData(aDest, aDestEnd, aLength))

   681 		return NoCompression;

   682 	while(aLength>128)

   683 		{

   684 		*aDest++=-128;

   685 		for(int count=0;count<128;count++)

   686 			*aDest++=*aData++;

   687 		aLength-=128;

   688 		}

   689 	if(aLength>128 || aLength<1) return CompressionError;

   690 	*aDest++=char(-aLength);

   691 	for(int count=0;count<aLength;count++)

   692 		*aDest++=*aData++;

   693 	return NoError;

   694 	}

   695 

   696 int BitmapCompiler::WriteCompressedByteValues(char*& aDest,char aValue,int aLength, const char* aDestEnd)

   697 	{

   698 	if (aLength < 1)

   699 		return CompressionError;

   700 

   701 	if(!CanWrite8bppValue(aDest, aDestEnd, aLength))

   702 		return NoCompression;

   703 

   704 	while (aLength > 128)

   705 		{

   706 		*aDest++ = 127;

   707 		*aDest++ = aValue;

   708 		aLength -= 128;

   709 		}

   710 

   711 	*aDest++ = char(aLength-1);

   712 	*aDest++ = aValue;

   713 

   714 	return NoError;

   715 	}

   716 

   717 int BitmapCompiler::CompressTwelveBitData(char*& aDest,char* aSrce,int aSizeInBytes)

   718 	{

   719 	unsigned short* srcePtr = (unsigned short*)aSrce;

   720 	unsigned short* srceLimitPtr = srcePtr + (aSizeInBytes / 2);

   721 	unsigned short* dest = (unsigned short*)aDest;

   722 

   723 	while (srcePtr < srceLimitPtr)

   724 		{

   725 		unsigned short* runStartPtr = srcePtr;

   726 		unsigned short value = *srcePtr;

   727 		do

   728 			srcePtr++;

   729 		while (srcePtr < srceLimitPtr && *srcePtr == value);

   730 		WriteCompressedTwelveBitData(dest,*runStartPtr,srcePtr - runStartPtr); // Ignore error return as 12bpp compression never fails

   731 		}

   732 

   733 	aDest = (char*)dest;

   734 	return NoError;

   735 	}

   736 

   737 int BitmapCompiler::WriteCompressedTwelveBitData(unsigned short*& aDest,unsigned short aData,int aLength)

   738 	{

   739 	// The run length l is stored as l-1 in the top 4 bits of each 16-bit word (between 1 and 16)

   740 	aData &= 0x0fff;

   741 	unsigned short maxLengthData = (unsigned short)(aData | 0xf000);

   742 

   743 	while(aLength>16)

   744 		{

   745 		*aDest++ = maxLengthData;

   746 		aLength -= 16;

   747 		}

   748 

   749 	if (aLength > 0)

   750 		*aDest++ = (unsigned short)(aData | ((aLength - 1) << 12));

   751 

   752 	return NoError;

   753 	}

   754 

   755 int BitmapCompiler::CompressSixteenBitData(char*& aDest,char* aSrce,int aSizeInBytes)

   756 	{

   757 	char* destEnd = aDest + aSizeInBytes;

   758 	unsigned short* srcePtr = (unsigned short*)aSrce;

   759 	unsigned short* srceLimitPtr = srcePtr + (aSizeInBytes / 2);

   760 	unsigned short* srceLimitPtrMinusOne = srceLimitPtr - 1;

   761 	char* destCompressedLimitPtr = aDest + (aSizeInBytes * 7 / 8);

   762 	int ret = NoError;

   763 

   764 	while (srcePtr < srceLimitPtrMinusOne)

   765 		{

   766 		unsigned short value = *srcePtr;

   767 		unsigned short* runStartPtr = srcePtr++;

   768 

   769 		if(*srcePtr == value)

   770 			{

   771 			do

   772 				srcePtr++;

   773 			while ( ( srcePtr < srceLimitPtr ) && ( *srcePtr == value ) );

   774 

   775 			ret = WriteCompressedSixteenBitValues(aDest,value,srcePtr-runStartPtr, destEnd);

   776 			if (ret)

   777 				return ret;

   778 			}

   779 		else

   780 			{

   781 			value = *srcePtr;

   782 			while (srcePtr < srceLimitPtrMinusOne && *(srcePtr + 1) != value)

   783 				{

   784 				srcePtr++;

   785 				value = *srcePtr;

   786 				}

   787 

   788 			ret = WriteCompressedSixteenBitData(aDest,runStartPtr,srcePtr - runStartPtr, destEnd);

   789 			if (ret)

   790 				return ret;

   791 			}

   792 		if (aDest > destCompressedLimitPtr)

   793 			return NoCompression;

   794 		}

   795 

   796 	if (srcePtr < srceLimitPtr)

   797 		{

   798 		ret = WriteCompressedSixteenBitData(aDest,srcePtr,srceLimitPtr - srcePtr, destEnd);

   799 		if (ret)

   800 			return ret;

   801 		}

   802 

   803 	if (aDest > destCompressedLimitPtr)

   804 		return NoCompression;

   805 	return NoError;

   806 	}

   807 

   808 int BitmapCompiler::WriteCompressedSixteenBitData(char*& aDest,unsigned short* aData,

   809 												  int aLength, const char* aDestEnd)

   810 	{

   811 	if (aLength < 1)

   812 		return CompressionError;

   813 

   814 	if(!CanCopy16bppData(aDest, aDestEnd, aLength))

   815 		return NoCompression;

   816 

   817 	char* srcePtr = (char*)aData;

   818 

   819 	while (aLength > 128)

   820 		{

   821 		*aDest++ = -128;

   822 		memcpy(aDest,srcePtr,256);

   823 		aDest += 256;

   824 		srcePtr += 256;

   825 		aLength -= 128;

   826 		}

   827 

   828 	*aDest++ = char(-aLength);

   829 

   830 	int remainingBytes = aLength * 2;

   831 	memcpy(aDest,srcePtr,remainingBytes);

   832 	aDest += remainingBytes;

   833 

   834 	return NoError;

   835 	}

   836 

   837 int BitmapCompiler::WriteCompressedSixteenBitValues(char*& aDest,unsigned short aValue,

   838 													int aLength, const char* aDestEnd)

   839 	{

   840 	if (aLength < 1)

   841 		return CompressionError;

   842 

   843 	if(!CanWrite16bppValue(aDest, aDestEnd, aLength))

   844 		return NoCompression;

   845 

   846 	char lowByte = char(aValue);

   847 	char highByte = char(aValue >> 8);

   848 

   849 	while (aLength > 128)

   850 		{

   851 		*aDest++ = 127;

   852 		*aDest++ = lowByte;

   853 		*aDest++ = highByte;

   854 		aLength -= 128;

   855 		}

   856 

   857 	*aDest++ = char(aLength-1);

   858 	*aDest++ = lowByte;

   859 	*aDest++ = highByte;

   860 

   861 	return NoError;

   862 	}

   863 

   864 int BitmapCompiler::CompressTwentyFourBitData(char*& aDest,char* aSrce,int aSizeInBytes)

   865 	{

   866 	const char* destEnd = aDest + aSizeInBytes; 

   867 	char* srceLimitPtr = aSrce + aSizeInBytes;

   868 	char* srceLimitPtrMinusThree = srceLimitPtr - 3; // three bytes == one pixel

   869 	char* destCompressedLimitPtr = aDest + (aSizeInBytes * 7 / 8);

   870 	int ret = NoError;

   871 

   872 	while (aSrce < srceLimitPtrMinusThree)

   873 		{

   874 		char* runStartPtr = aSrce;

   875 		char component1 = *aSrce++;

   876 		char component2 = *aSrce++;

   877 		char component3 = *aSrce++;

   878 

   879 		if (TrueColorPointerCompare(aSrce,component1,component2,component3))

   880 			{

   881 			do

   882 				aSrce += 3;

   883 			while (aSrce < srceLimitPtr && TrueColorPointerCompare(aSrce,component1,component2,component3));

   884 

   885 			ret = WriteCompressedTwentyFourBitValues(aDest,component1,component2,component3,(aSrce - runStartPtr) / 3, destEnd);

   886 			if (ret)

   887 				return ret;

   888 			}

   889 		else

   890 			{

   891 			bool more  = true;

   892 			bool eqRun = false;

   893 			do

   894 				{

   895 				component1 = *aSrce++;

   896 				component2 = *aSrce++;

   897 				component3 = *aSrce++;

   898 				more = (aSrce < srceLimitPtr);

   899 				eqRun = more && TrueColorPointerCompare(aSrce,component1,component2,component3);

   900 				}

   901 			while (more && !eqRun);

   902 			if (eqRun)

   903 				aSrce -= 3;

   904 			int pixelLength = (aSrce - runStartPtr) / 3;

   905 			ret = WriteCompressedTwentyFourBitData(aDest,runStartPtr,pixelLength,destEnd);

   906 			if (ret)

   907 				return ret;

   908 			}

   909 		if (aDest > destCompressedLimitPtr)

   910 			return NoCompression;

   911 		}

   912 

   913 	if (aSrce < srceLimitPtr)

   914 		{

   915 		ret = WriteCompressedTwentyFourBitData(aDest,aSrce,(srceLimitPtr - aSrce) / 3, destEnd);

   916 		if (ret)

   917 			return ret;

   918 		}

   919 

   920 	if (aDest > destCompressedLimitPtr)

   921 		return NoCompression;

   922 	return NoError;

   923 	}

   924 

   925 int BitmapCompiler::WriteCompressedTwentyFourBitData(char*& aDest,char* aData,

   926 													 int aLength, const char* aDestEnd)

   927 	{

   928 	if (aLength < 1)

   929 		return CompressionError;

   930 

   931 	if(!CanCopy24bppData(aDest, aDestEnd, aLength))

   932 		return NoCompression;

   933 

   934 	while (aLength > 128)

   935 		{

   936 		*aDest++ = -128;

   937 		memcpy(aDest,aData,384);

   938 		aDest += 384;

   939 		aData += 384;

   940 		aLength -= 128;

   941 		}

   942 

   943 	*aDest++ = char(-aLength);

   944 

   945 	int remainingBytes = aLength * 3;

   946 	memcpy(aDest,aData,remainingBytes);

   947 	aDest += remainingBytes;

   948 

   949 	return NoError;

   950 	}

   951 

   952 int BitmapCompiler::WriteCompressedTwentyFourBitValues(char*& aDest,char aComponent1,

   953 													   char aComponent2,char aComponent3,

   954 													   int aLength, const char* aDestEnd)

   955 	{

   956 	if (aLength < 1)

   957 		return CompressionError;

   958 

   959 	if(!CanWrite24bppValue(aDest, aDestEnd, aLength))

   960 		return NoCompression;

   961 

   962 	while (aLength > 128)

   963 		{

   964 		*aDest++ = 127;

   965 		*aDest++ = aComponent1;

   966 		*aDest++ = aComponent2;

   967 		*aDest++ = aComponent3;

   968 		aLength -= 128;

   969 		}

   970 

   971 	*aDest++ = char(aLength-1);

   972 	*aDest++ = aComponent1;

   973 	*aDest++ = aComponent2;

   974 	*aDest++ = aComponent3;

   975 

   976 	return NoError;

   977 	}

   978 

   979 /** The function encodes 32-bit buffer into 24-bit stream by using RLE compression algorithm*/

   980 int BitmapCompiler::CompressThirtyTwoUBitData(char*& aDest,char* aSrce,int aSizeInBytes)

   981 	{

   982 	const char* destEnd = aDest + aSizeInBytes; 

   983 	char* srceLimitPtr = aSrce + aSizeInBytes;

   984 	char* srceLimitPtrMinusFour = srceLimitPtr - 4; // four bytes == one pixel

   985 	char* destCompressedLimitPtr = aDest + (aSizeInBytes * 7 / 8);

   986 	int ret = NoError;

   987 

   988 	while (aSrce < srceLimitPtrMinusFour)

   989 		{

   990 		char* runStartPtr = aSrce;

   991 		char component1 = *aSrce++;

   992 		char component2 = *aSrce++;

   993 		char component3 = *aSrce++;

   994 		aSrce++;

   995 

   996 		if (TrueColorPointerCompare(aSrce,component1,component2,component3))

   997 			{

   998 			do

   999 				aSrce += 4;

  1000 			while (aSrce < srceLimitPtr && TrueColorPointerCompare(aSrce,component1,component2,component3));

  1001 

  1002 			ret = WriteCompressedThirtyTwoUBitValues(aDest,component1,component2,component3,(aSrce - runStartPtr) / 4, destEnd);

  1003 			if (ret)

  1004 				return ret;

  1005 			}

  1006 		else //non repeating pixel buffer

  1007 			{

  1008 			bool more  = true;

  1009 			bool eqRun = false;

  1010 			do {

  1011 				component1 = *aSrce++;

  1012 				component2 = *aSrce++;

  1013 				component3 = *aSrce++;

  1014 				aSrce++; //last byte is unused (no alpha component)

  1015 				more = (aSrce < srceLimitPtr);

  1016 				eqRun = more && TrueColorPointerCompare(aSrce,component1,component2,component3);

  1017 				} while (more && !eqRun);

  1018 			if (eqRun)

  1019 				aSrce -= 4;

  1020 			int pixelLength = (aSrce - runStartPtr) / 4;

  1021 			ret = WriteCompressedThirtyTwoUBitData(aDest,runStartPtr,pixelLength,destEnd);

  1022  			if (ret)

  1023 				return ret;

  1024 			}

  1025 		if (aDest > destCompressedLimitPtr)

  1026 			return NoCompression;

  1027 		}

  1028 

  1029 	if (aSrce < srceLimitPtr)

  1030 		{

  1031 		ret = WriteCompressedThirtyTwoUBitData(aDest,aSrce,(srceLimitPtr - aSrce) / 4, destEnd);

  1032 		if (ret)

  1033 			return ret;

  1034 		}

  1035 

  1036 	if (aDest > destCompressedLimitPtr)

  1037 		return NoCompression;

  1038 	return NoError;

  1039 	}

  1040 

  1041 /** The function copies non repeating 32-bit buffer to 24-bit compressed buffer*/

  1042 int BitmapCompiler::WriteCompressedThirtyTwoUBitData(char*& aDest,char* aData,

  1043 													 int aLength, const char* aDestEnd)

  1044 	{

  1045 	if (aLength < 1)

  1046 		return CompressionError;

  1047 

  1048 	if(!CanCopy24bppData(aDest, aDestEnd, aLength))

  1049 		return NoCompression;

  1050 

  1051 	while (aLength > 128)

  1052 		{

  1053 		*aDest++ = -128;

  1054 		for(int ii = 0; ii < 128; ii++)

  1055 			{

  1056 			memcpy(aDest,aData, 3);

  1057 			aDest += 3;

  1058 			aData += 4;

  1059 			}

  1060 		aLength -= 128;

  1061 		}

  1062 

  1063 	*aDest++ = char(-aLength);

  1064 

  1065 	while(aLength--)

  1066 		{

  1067 		memcpy(aDest,aData, 3);

  1068 		aDest += 3;

  1069 		aData += 4;

  1070 		}

  1071 

  1072 	return NoError;

  1073 	}

  1074 

  1075 /** The function copies repeating colour to the 24-bit compressed buffer */

  1076 int BitmapCompiler::WriteCompressedThirtyTwoUBitValues(char*& aDest,char aComponent1,

  1077 													   char aComponent2,char aComponent3,

  1078 													   int aLength, const char* aDestEnd)

  1079 	{

  1080 	if (aLength < 1)

  1081 		return CompressionError;

  1082 

  1083 	if(!CanWrite24bppValue(aDest, aDestEnd, aLength))

  1084 		return NoCompression;

  1085 	while (aLength > 128)

  1086 		{

  1087 		*aDest++ = 127;

  1088 		*aDest++ = aComponent1;

  1089 		*aDest++ = aComponent2;

  1090 		*aDest++ = aComponent3;

  1091 		aLength -= 128;

  1092 		}

  1093 

  1094 	*aDest++ = char(aLength-1);

  1095 	*aDest++ = aComponent1;

  1096 	*aDest++ = aComponent2;

  1097 	*aDest++ = aComponent3;

  1098 

  1099 	return NoError;

  1100 	}

  1101 

  1102 int BitmapCompiler::TrueColorPointerCompare(char* aColorPointer,char aComponent1,char aComponent2,char aComponent3)

  1103 	{

  1104 	return (*aColorPointer == aComponent1 && *(aColorPointer + 1) == aComponent2 && *(aColorPointer + 2) == aComponent3);

  1105 	}

  1106 

  1107 /** The function encodes 32-bit buffer into 32-bit stream by using RLE compression algorithm*/

  1108 int BitmapCompiler::CompressThirtyTwoABitData(char*& aDest,char* aSrce,int aSizeInBytes)

  1109 	{

  1110 	const char* destEnd = aDest + aSizeInBytes; 

  1111 	char* srceLimitPtr = aSrce + aSizeInBytes;

  1112 	char* srceLimitPtrMinusFour = srceLimitPtr - 4; // four bytes == one pixel

  1113 	char* destCompressedLimitPtr = aDest + (aSizeInBytes * 7 / 8);

  1114 	int ret = NoError;

  1115 

  1116 	while (aSrce < srceLimitPtrMinusFour)

  1117 		{

  1118 		char* runStartPtr = aSrce;

  1119 		char component1 = *aSrce++;

  1120 		char component2 = *aSrce++;

  1121 		char component3 = *aSrce++;

  1122 		char component4 = *aSrce++;

  1123 

  1124 		if (ColorAlphaPointerCompare(aSrce,component1,component2,component3,component4))

  1125 			{

  1126 			do

  1127 				aSrce += 4;

  1128 			while (aSrce < srceLimitPtr && ColorAlphaPointerCompare(aSrce,component1,component2,component3,component4));

  1129 			int eqPixelLength = (aSrce - runStartPtr) / 4;

  1130 			ret = WriteCompressedThirtyTwoABitValues(aDest,component1,component2,component3,component4,eqPixelLength,destEnd);

  1131 			if (ret)

  1132 				return ret;

  1133 			}

  1134 		else //non repeating pixel buffer

  1135 			{