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-rw-r--r--benchmarks/CUDA/RAY/EasyBMP.cpp1905
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diff --git a/benchmarks/CUDA/RAY/EasyBMP.cpp b/benchmarks/CUDA/RAY/EasyBMP.cpp
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-/*************************************************
-* *
-* EasyBMP Cross-Platform Windows Bitmap Library *
-* *
-* Author: Paul Macklin *
-* email: [email protected] *
-* support: http://easybmp.sourceforge.net *
-* *
-* file: EasyBMP.cpp *
-* date added: 03-31-2006 *
-* date modified: 12-01-2006 *
-* version: 1.06 *
-* *
-* License: BSD (revised/modified) *
-* Copyright: 2005-6 by the EasyBMP Project *
-* *
-* description: Actual source file *
-* *
-*************************************************/
-
-#include "EasyBMP.h"
-
-/* These functions are defined in EasyBMP.h */
-
-bool EasyBMPwarnings = true;
-
-void SetEasyBMPwarningsOff( void )
-{ EasyBMPwarnings = false; }
-void SetEasyBMPwarningsOn( void )
-{ EasyBMPwarnings = true; }
-bool GetEasyBMPwarningState( void )
-{ return EasyBMPwarnings; }
-
-/* These functions are defined in EasyBMP_DataStructures.h */
-
-int IntPow( int base, int exponent )
-{
- int i;
- int output = 1;
- for( i=0 ; i < exponent ; i++ )
- { output *= base; }
- return output;
-}
-
-BMFH::BMFH()
-{
- bfType = 19778;
- bfReserved1 = 0;
- bfReserved2 = 0;
-}
-
-void BMFH::SwitchEndianess( void )
-{
- bfType = FlipWORD( bfType );
- bfSize = FlipDWORD( bfSize );
- bfReserved1 = FlipWORD( bfReserved1 );
- bfReserved2 = FlipWORD( bfReserved2 );
- bfOffBits = FlipDWORD( bfOffBits );
- return;
-}
-
-BMIH::BMIH()
-{
- biPlanes = 1;
- biCompression = 0;
- biXPelsPerMeter = DefaultXPelsPerMeter;
- biYPelsPerMeter = DefaultYPelsPerMeter;
- biClrUsed = 0;
- biClrImportant = 0;
-}
-
-void BMIH::SwitchEndianess( void )
-{
- biSize = FlipDWORD( biSize );
- biWidth = FlipDWORD( biWidth );
- biHeight = FlipDWORD( biHeight );
- biPlanes = FlipWORD( biPlanes );
- biBitCount = FlipWORD( biBitCount );
- biCompression = FlipDWORD( biCompression );
- biSizeImage = FlipDWORD( biSizeImage );
- biXPelsPerMeter = FlipDWORD( biXPelsPerMeter );
- biYPelsPerMeter = FlipDWORD( biYPelsPerMeter );
- biClrUsed = FlipDWORD( biClrUsed );
- biClrImportant = FlipDWORD( biClrImportant );
- return;
-}
-
-void BMIH::display( void )
-{
- using namespace std;
- cout << "biSize: " << (int) biSize << endl
- << "biWidth: " << (int) biWidth << endl
- << "biHeight: " << (int) biHeight << endl
- << "biPlanes: " << (int) biPlanes << endl
- << "biBitCount: " << (int) biBitCount << endl
- << "biCompression: " << (int) biCompression << endl
- << "biSizeImage: " << (int) biSizeImage << endl
- << "biXPelsPerMeter: " << (int) biXPelsPerMeter << endl
- << "biYPelsPerMeter: " << (int) biYPelsPerMeter << endl
- << "biClrUsed: " << (int) biClrUsed << endl
- << "biClrImportant: " << (int) biClrImportant << endl << endl;
-}
-
-void BMFH::display( void )
-{
- using namespace std;
- cout << "bfType: " << (int) bfType << endl
- << "bfSize: " << (int) bfSize << endl
- << "bfReserved1: " << (int) bfReserved1 << endl
- << "bfReserved2: " << (int) bfReserved2 << endl
- << "bfOffBits: " << (int) bfOffBits << endl << endl;
-}
-
-/* These functions are defined in EasyBMP_BMP.h */
-
-RGBApixel BMP::GetPixel( int i, int j ) const
-{
- using namespace std;
- bool Warn = false;
- if( i >= Width )
- { i = Width-1; Warn = true; }
- if( i < 0 )
- { i = 0; Warn = true; }
- if( j >= Height )
- { j = Height-1; Warn = true; }
- if( j < 0 )
- { j = 0; Warn = true; }
- if( Warn && EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Attempted to access non-existent pixel;" << endl
- << " Truncating request to fit in the range [0,"
- << Width-1 << "] x [0," << Height-1 << "]." << endl;
- }
- return Pixels[i][j];
-}
-
-bool BMP::SetPixel( int i, int j, RGBApixel NewPixel )
-{
- Pixels[i][j] = NewPixel;
- return true;
-}
-
-
-bool BMP::SetColor( int ColorNumber , RGBApixel NewColor )
-{
- using namespace std;
- if( BitDepth != 1 && BitDepth != 4 && BitDepth != 8 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Attempted to change color table for a BMP object" << endl
- << " that lacks a color table. Ignoring request." << endl;
- }
- return false;
- }
- if( !Colors )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Attempted to set a color, but the color table" << endl
- << " is not defined. Ignoring request." << endl;
- }
- return false;
- }
- if( ColorNumber >= TellNumberOfColors() )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Requested color number "
- << ColorNumber << " is outside the allowed" << endl
- << " range [0," << TellNumberOfColors()-1
- << "]. Ignoring request to set this color." << endl;
- }
- return false;
- }
- Colors[ColorNumber] = NewColor;
- return true;
-}
-
-// RGBApixel BMP::GetColor( int ColorNumber ) const
-RGBApixel BMP::GetColor( int ColorNumber )
-{
- RGBApixel Output;
- Output.Red = 255;
- Output.Green = 255;
- Output.Blue = 255;
- Output.Alpha = 0;
-
- using namespace std;
- if( BitDepth != 1 && BitDepth != 4 && BitDepth != 8 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Attempted to access color table for a BMP object" << endl
- << " that lacks a color table. Ignoring request." << endl;
- }
- return Output;
- }
- if( !Colors )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Requested a color, but the color table" << endl
- << " is not defined. Ignoring request." << endl;
- }
- return Output;
- }
- if( ColorNumber >= TellNumberOfColors() )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Requested color number "
- << ColorNumber << " is outside the allowed" << endl
- << " range [0," << TellNumberOfColors()-1
- << "]. Ignoring request to get this color." << endl;
- }
- return Output;
- }
- Output = Colors[ColorNumber];
- return Output;
-}
-
-BMP::BMP()
-{
- Width = 1;
- Height = 1;
- BitDepth = 24;
- Pixels = new RGBApixel* [Width];
- Pixels[0] = new RGBApixel [Height];
- Colors = NULL;
-
- XPelsPerMeter = 0;
- YPelsPerMeter = 0;
-
- MetaData1 = NULL;
- SizeOfMetaData1 = 0;
- MetaData2 = NULL;
- SizeOfMetaData2 = 0;
-}
-
-// BMP::BMP( const BMP& Input )
-BMP::BMP( BMP& Input )
-{
- // first, make the image empty.
-
- Width = 1;
- Height = 1;
- BitDepth = 24;
- Pixels = new RGBApixel* [Width];
- Pixels[0] = new RGBApixel [Height];
- Colors = NULL;
- XPelsPerMeter = 0;
- YPelsPerMeter = 0;
-
- MetaData1 = NULL;
- SizeOfMetaData1 = 0;
- MetaData2 = NULL;
- SizeOfMetaData2 = 0;
-
- // now, set the correct bit depth
-
- SetBitDepth( Input.TellBitDepth() );
-
- // set the correct pixel size
-
- SetSize( Input.TellWidth() , Input.TellHeight() );
-
- // set the DPI information from Input
-
- SetDPI( Input.TellHorizontalDPI() , Input.TellVerticalDPI() );
-
- // if there is a color table, get all the colors
-
- if( BitDepth == 1 || BitDepth == 4 ||
- BitDepth == 8 )
- {
- for( int k=0 ; k < TellNumberOfColors() ; k++ )
- {
- SetColor( k, Input.GetColor( k ));
- }
- }
-
- // get all the pixels
-
- for( int j=0; j < Height ; j++ )
- {
- for( int i=0; i < Width ; i++ )
- {
- Pixels[i][j] = *Input(i,j);
-// Pixels[i][j] = Input.GetPixel(i,j); // *Input(i,j);
- }
- }
-}
-
-BMP::~BMP()
-{
- int i;
- for(i=0;i<Width;i++)
- { delete [] Pixels[i]; }
- delete [] Pixels;
- if( Colors )
- { delete [] Colors; }
-
- if( MetaData1 )
- { delete [] MetaData1; }
- if( MetaData2 )
- { delete [] MetaData2; }
-}
-
-RGBApixel* BMP::operator()(int i, int j)
-{
- using namespace std;
- bool Warn = false;
- if( i >= Width )
- { i = Width-1; Warn = true; }
- if( i < 0 )
- { i = 0; Warn = true; }
- if( j >= Height )
- { j = Height-1; Warn = true; }
- if( j < 0 )
- { j = 0; Warn = true; }
- if( Warn && EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Attempted to access non-existent pixel;" << endl
- << " Truncating request to fit in the range [0,"
- << Width-1 << "] x [0," << Height-1 << "]." << endl;
- }
- return &(Pixels[i][j]);
-}
-
-// int BMP::TellBitDepth( void ) const
-int BMP::TellBitDepth( void )
-{ return BitDepth; }
-
-// int BMP::TellHeight( void ) const
-int BMP::TellHeight( void )
-{ return Height; }
-
-// int BMP::TellWidth( void ) const
-int BMP::TellWidth( void )
-{ return Width; }
-
-// int BMP::TellNumberOfColors( void ) const
-int BMP::TellNumberOfColors( void )
-{
- int output = IntPow( 2, BitDepth );
- if( BitDepth == 32 )
- { output = IntPow( 2, 24 ); }
- return output;
-}
-
-bool BMP::SetBitDepth( int NewDepth )
-{
- using namespace std;
- if( NewDepth != 1 && NewDepth != 4 &&
- NewDepth != 8 && NewDepth != 16 &&
- NewDepth != 24 && NewDepth != 32 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: User attempted to set unsupported bit depth "
- << NewDepth << "." << endl
- << " Bit depth remains unchanged at "
- << BitDepth << "." << endl;
- }
- return false;
- }
-
- BitDepth = NewDepth;
- if( Colors )
- { delete [] Colors; }
- int NumberOfColors = IntPow( 2, BitDepth );
- if( BitDepth == 1 || BitDepth == 4 || BitDepth == 8 )
- { Colors = new RGBApixel [NumberOfColors]; }
- else
- { Colors = NULL; }
- if( BitDepth == 1 || BitDepth == 4 || BitDepth == 8 )
- { CreateStandardColorTable(); }
-
- return true;
-}
-
-bool BMP::SetSize(int NewWidth , int NewHeight )
-{
- using namespace std;
- if( NewWidth <= 0 || NewHeight <= 0 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: User attempted to set a non-positive width or height." << endl
- << " Size remains unchanged at "
- << Width << " x " << Height << "." << endl;
- }
- return false;
- }
-
- int i,j;
-
- for(i=0;i<Width;i++)
- { delete [] Pixels[i]; }
- delete [] Pixels;
-
- Width = NewWidth;
- Height = NewHeight;
- Pixels = new RGBApixel* [ Width ];
-
- for(i=0; i<Width; i++)
- { Pixels[i] = new RGBApixel [ Height ]; }
-
- for( i=0 ; i < Width ; i++)
- {
- for( j=0 ; j < Height ; j++ )
- {
- Pixels[i][j].Red = 255;
- Pixels[i][j].Green = 255;
- Pixels[i][j].Blue = 255;
- Pixels[i][j].Alpha = 0;
- }
- }
-
- return true;
-}
-
-bool BMP::WriteToFile( const char* FileName )
-{
- using namespace std;
- if( !EasyBMPcheckDataSize() )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Data types are wrong size!" << endl
- << " You may need to mess with EasyBMP_DataTypes.h" << endl
- << " to fix these errors, and then recompile." << endl
- << " All 32-bit and 64-bit machines should be" << endl
- << " supported, however." << endl << endl;
- }
- return false;
- }
-
- FILE* fp = fopen( FileName, "wb" );
- if( fp == NULL )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Cannot open file "
- << FileName << " for output." << endl;
- }
- fclose( fp );
- return false;
- }
-
- // some preliminaries
-
- double dBytesPerPixel = ( (double) BitDepth ) / 8.0;
- double dBytesPerRow = dBytesPerPixel * (Width+0.0);
- dBytesPerRow = ceil(dBytesPerRow);
-
- int BytePaddingPerRow = 4 - ( (int) (dBytesPerRow) )% 4;
- if( BytePaddingPerRow == 4 )
- { BytePaddingPerRow = 0; }
-
- double dActualBytesPerRow = dBytesPerRow + BytePaddingPerRow;
-
- double dTotalPixelBytes = Height * dActualBytesPerRow;
-
- double dPaletteSize = 0;
- if( BitDepth == 1 || BitDepth == 4 || BitDepth == 8 )
- { dPaletteSize = IntPow(2,BitDepth)*4.0; }
-
- // leave some room for 16-bit masks
- if( BitDepth == 16 )
- { dPaletteSize = 3*4; }
-
- double dTotalFileSize = 14 + 40 + dPaletteSize + dTotalPixelBytes;
-
- // write the file header
-
- BMFH bmfh;
- bmfh.bfSize = (ebmpDWORD) dTotalFileSize;
- bmfh.bfReserved1 = 0;
- bmfh.bfReserved2 = 0;
- bmfh.bfOffBits = (ebmpDWORD) (14+40+dPaletteSize);
-
- if( IsBigEndian() )
- { bmfh.SwitchEndianess(); }
-
- fwrite( (char*) &(bmfh.bfType) , sizeof(ebmpWORD) , 1 , fp );
- fwrite( (char*) &(bmfh.bfSize) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmfh.bfReserved1) , sizeof(ebmpWORD) , 1 , fp );
- fwrite( (char*) &(bmfh.bfReserved2) , sizeof(ebmpWORD) , 1 , fp );
- fwrite( (char*) &(bmfh.bfOffBits) , sizeof(ebmpDWORD) , 1 , fp );
-
- // write the info header
-
- BMIH bmih;
- bmih.biSize = 40;
- bmih.biWidth = Width;
- bmih.biHeight = Height;
- bmih.biPlanes = 1;
- bmih.biBitCount = BitDepth;
- bmih.biCompression = 0;
- bmih.biSizeImage = (ebmpDWORD) dTotalPixelBytes;
- if( XPelsPerMeter )
- { bmih.biXPelsPerMeter = XPelsPerMeter; }
- else
- { bmih.biXPelsPerMeter = DefaultXPelsPerMeter; }
- if( YPelsPerMeter )
- { bmih.biYPelsPerMeter = YPelsPerMeter; }
- else
- { bmih.biYPelsPerMeter = DefaultYPelsPerMeter; }
-
- bmih.biClrUsed = 0;
- bmih.biClrImportant = 0;
-
- // indicates that we'll be using bit fields for 16-bit files
- if( BitDepth == 16 )
- { bmih.biCompression = 3; }
-
- if( IsBigEndian() )
- { bmih.SwitchEndianess(); }
-
- fwrite( (char*) &(bmih.biSize) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biWidth) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biHeight) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biPlanes) , sizeof(ebmpWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biBitCount) , sizeof(ebmpWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biCompression) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biSizeImage) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biXPelsPerMeter) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biYPelsPerMeter) , sizeof(ebmpDWORD) , 1 , fp );
- fwrite( (char*) &(bmih.biClrUsed) , sizeof(ebmpDWORD) , 1 , fp);
- fwrite( (char*) &(bmih.biClrImportant) , sizeof(ebmpDWORD) , 1 , fp);
-
- // write the palette
- if( BitDepth == 1 || BitDepth == 4 || BitDepth == 8 )
- {
- int NumberOfColors = IntPow(2,BitDepth);
-
- // if there is no palette, create one
- if( !Colors )
- {
- if( !Colors )
- { Colors = new RGBApixel [NumberOfColors]; }
- CreateStandardColorTable();
- }
-
- int n;
- for( n=0 ; n < NumberOfColors ; n++ )
- { fwrite( (char*) &(Colors[n]) , 4 , 1 , fp ); }
- }
-
- // write the pixels
- int i,j;
- if( BitDepth != 16 )
- {
- ebmpBYTE* Buffer;
- int BufferSize = (int) ( (Width*BitDepth)/8.0 );
- while( 8*BufferSize < Width*BitDepth )
- { BufferSize++; }
- while( BufferSize % 4 )
- { BufferSize++; }
-
- Buffer = new ebmpBYTE [BufferSize];
- for( j=0 ; j < BufferSize; j++ )
- { Buffer[j] = 0; }
-
- j=Height-1;
-
- while( j > -1 )
- {
- bool Success = false;
- if( BitDepth == 32 )
- { Success = Write32bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 24 )
- { Success = Write24bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 8 )
- { Success = Write8bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 4 )
- { Success = Write4bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 1 )
- { Success = Write1bitRow( Buffer, BufferSize, j ); }
- if( Success )
- {
- int BytesWritten = (int) fwrite( (char*) Buffer, 1, BufferSize, fp );
- if( BytesWritten != BufferSize )
- { Success = false; }
- }
- if( !Success )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Could not write proper amount of data." << endl;
- }
- j = -1;
- }
- j--;
- }
-
- delete [] Buffer;
- }
-
- if( BitDepth == 16 )
- {
- // write the bit masks
-
- ebmpWORD BlueMask = 31; // bits 12-16
- ebmpWORD GreenMask = 2016; // bits 6-11
- ebmpWORD RedMask = 63488; // bits 1-5
- ebmpWORD ZeroWORD;
-
- if( IsBigEndian() )
- { RedMask = FlipWORD( RedMask ); }
- fwrite( (char*) &RedMask , 2 , 1 , fp );
- fwrite( (char*) &ZeroWORD , 2 , 1 , fp );
-
- if( IsBigEndian() )
- { GreenMask = FlipWORD( GreenMask ); }
- fwrite( (char*) &GreenMask , 2 , 1 , fp );
- fwrite( (char*) &ZeroWORD , 2 , 1 , fp );
-
- if( IsBigEndian() )
- { BlueMask = FlipWORD( BlueMask ); }
- fwrite( (char*) &BlueMask , 2 , 1 , fp );
- fwrite( (char*) &ZeroWORD , 2 , 1 , fp );
-
- int DataBytes = Width*2;
- int PaddingBytes = ( 4 - DataBytes % 4 ) % 4;
-
- // write the actual pixels
-
- for( j=Height-1 ; j >= 0 ; j-- )
- {
- // write all row pixel data
- i=0;
- int WriteNumber = 0;
- while( WriteNumber < DataBytes )
- {
- ebmpWORD TempWORD;
-
- ebmpWORD RedWORD = (ebmpWORD) ((Pixels[i][j]).Red / 8);
- ebmpWORD GreenWORD = (ebmpWORD) ((Pixels[i][j]).Green / 4);
- ebmpWORD BlueWORD = (ebmpWORD) ((Pixels[i][j]).Blue / 8);
-
- TempWORD = (RedWORD<<11) + (GreenWORD<<5) + BlueWORD;
- if( IsBigEndian() )
- { TempWORD = FlipWORD( TempWORD ); }
-
- fwrite( (char*) &TempWORD , 2, 1, fp);
- WriteNumber += 2;
- i++;
- }
- // write any necessary row padding
- WriteNumber = 0;
- while( WriteNumber < PaddingBytes )
- {
- ebmpBYTE TempBYTE;
- fwrite( (char*) &TempBYTE , 1, 1, fp);
- WriteNumber++;
- }
- }
-
- }
-
- fclose(fp);
- return true;
-}
-
-bool BMP::ReadFromFile( const char* FileName )
-{
- using namespace std;
- if( !EasyBMPcheckDataSize() )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Data types are wrong size!" << endl
- << " You may need to mess with EasyBMP_DataTypes.h" << endl
- << " to fix these errors, and then recompile." << endl
- << " All 32-bit and 64-bit machines should be" << endl
- << " supported, however." << endl << endl;
- }
- return false;
- }
-
- FILE* fp = fopen( FileName, "rb" );
- if( fp == NULL )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Cannot open file "
- << FileName << " for input." << endl;
- }
- SetBitDepth(1);
- SetSize(1,1);
- return false;
- }
-
- // read the file header
-
- BMFH bmfh;
- bool NotCorrupted = true;
-
- NotCorrupted &= SafeFread( (char*) &(bmfh.bfType) , sizeof(ebmpWORD), 1, fp);
-
- bool IsBitmap = false;
-
- if( IsBigEndian() && bmfh.bfType == 16973 )
- { IsBitmap = true; }
- if( !IsBigEndian() && bmfh.bfType == 19778 )
- { IsBitmap = true; }
-
- if( !IsBitmap )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: " << FileName
- << " is not a Windows BMP file!" << endl;
- }
- fclose( fp );
- return false;
- }
-
- NotCorrupted &= SafeFread( (char*) &(bmfh.bfSize) , sizeof(ebmpDWORD) , 1, fp);
- NotCorrupted &= SafeFread( (char*) &(bmfh.bfReserved1) , sizeof(ebmpWORD) , 1, fp);
- NotCorrupted &= SafeFread( (char*) &(bmfh.bfReserved2) , sizeof(ebmpWORD) , 1, fp);
- NotCorrupted &= SafeFread( (char*) &(bmfh.bfOffBits) , sizeof(ebmpDWORD) , 1 , fp);
-
- if( IsBigEndian() )
- { bmfh.SwitchEndianess(); }
-
- // read the info header
-
- BMIH bmih;
-
- NotCorrupted &= SafeFread( (char*) &(bmih.biSize) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biWidth) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biHeight) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biPlanes) , sizeof(ebmpWORD) , 1, fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biBitCount) , sizeof(ebmpWORD) , 1, fp);
-
- NotCorrupted &= SafeFread( (char*) &(bmih.biCompression) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biSizeImage) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biXPelsPerMeter) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biYPelsPerMeter) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biClrUsed) , sizeof(ebmpDWORD) , 1 , fp);
- NotCorrupted &= SafeFread( (char*) &(bmih.biClrImportant) , sizeof(ebmpDWORD) , 1 , fp);
-
- if( IsBigEndian() )
- { bmih.SwitchEndianess(); }
-
- // a safety catch: if any of the header information didn't read properly, abort
- // future idea: check to see if at least most is self-consistent
-
- if( !NotCorrupted )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: " << FileName
- << " is obviously corrupted." << endl;
- }
- SetSize(1,1);
- SetBitDepth(1);
- fclose(fp);
- return false;
- }
-
- XPelsPerMeter = bmih.biXPelsPerMeter;
- YPelsPerMeter = bmih.biYPelsPerMeter;
-
- // if bmih.biCompression 1 or 2, then the file is RLE compressed
-
- if( bmih.biCompression == 1 || bmih.biCompression == 2 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: " << FileName << " is (RLE) compressed." << endl
- << " EasyBMP does not support compression." << endl;
- }
- SetSize(1,1);
- SetBitDepth(1);
- fclose(fp);
- return false;
- }
-
- // if bmih.biCompression > 3, then something strange is going on
- // it's probably an OS2 bitmap file.
-
- if( bmih.biCompression > 3 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: " << FileName << " is in an unsupported format."
- << endl
- << " (bmih.biCompression = "
- << bmih.biCompression << ")" << endl
- << " The file is probably an old OS2 bitmap or corrupted."
- << endl;
- }
- SetSize(1,1);
- SetBitDepth(1);
- fclose(fp);
- return false;
- }
-
- if( bmih.biCompression == 3 && bmih.biBitCount != 16 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: " << FileName
- << " uses bit fields and is not a" << endl
- << " 16-bit file. This is not supported." << endl;
- }
- SetSize(1,1);
- SetBitDepth(1);
- fclose(fp);
- return false;
- }
-
- // set the bit depth
-
- int TempBitDepth = (int) bmih.biBitCount;
- if( TempBitDepth != 1 && TempBitDepth != 4
- && TempBitDepth != 8 && TempBitDepth != 16
- && TempBitDepth != 24 && TempBitDepth != 32 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: " << FileName << " has unrecognized bit depth." << endl;
- }
- SetSize(1,1);
- SetBitDepth(1);
- fclose(fp);
- return false;
- }
- SetBitDepth( (int) bmih.biBitCount );
-
- // set the size
-
- if( (int) bmih.biWidth <= 0 || (int) bmih.biHeight <= 0 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: " << FileName
- << " has a non-positive width or height." << endl;
- }
- SetSize(1,1);
- SetBitDepth(1);
- fclose(fp);
- return false;
- }
- SetSize( (int) bmih.biWidth , (int) bmih.biHeight );
-
- // some preliminaries
-
- double dBytesPerPixel = ( (double) BitDepth ) / 8.0;
- double dBytesPerRow = dBytesPerPixel * (Width+0.0);
- dBytesPerRow = ceil(dBytesPerRow);
-
- int BytePaddingPerRow = 4 - ( (int) (dBytesPerRow) )% 4;
- if( BytePaddingPerRow == 4 )
- { BytePaddingPerRow = 0; }
-
- // if < 16 bits, read the palette
-
- if( BitDepth < 16 )
- {
- // determine the number of colors specified in the
- // color table
-
- int NumberOfColorsToRead = ((int) bmfh.bfOffBits - 54 )/4;
- if( NumberOfColorsToRead > IntPow(2,BitDepth) )
- { NumberOfColorsToRead = IntPow(2,BitDepth); }
-
- if( NumberOfColorsToRead < TellNumberOfColors() )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: file " << FileName << " has an underspecified" << endl
- << " color table. The table will be padded with extra" << endl
- << " white (255,255,255,0) entries." << endl;
- }
- }
-
- int n;
- for( n=0; n < NumberOfColorsToRead ; n++ )
- {
- SafeFread( (char*) &(Colors[n]) , 4 , 1 , fp);
- }
- for( n=NumberOfColorsToRead ; n < TellNumberOfColors() ; n++ )
- {
- RGBApixel WHITE;
- WHITE.Red = 255;
- WHITE.Green = 255;
- WHITE.Blue = 255;
- WHITE.Alpha = 0;
- SetColor( n , WHITE );
- }
-
-
- }
-
- // skip blank data if bfOffBits so indicates
-
- int BytesToSkip = bmfh.bfOffBits - 54;;
- if( BitDepth < 16 )
- { BytesToSkip -= 4*IntPow(2,BitDepth); }
- if( BitDepth == 16 && bmih.biCompression == 3 )
- { BytesToSkip -= 3*4; }
- if( BytesToSkip < 0 )
- { BytesToSkip = 0; }
- if( BytesToSkip > 0 && BitDepth != 16 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Extra meta data detected in file " << FileName << endl
- << " Data will be skipped." << endl;
- }
- ebmpBYTE* TempSkipBYTE;
- TempSkipBYTE = new ebmpBYTE [BytesToSkip];
- SafeFread( (char*) TempSkipBYTE , BytesToSkip , 1 , fp);
- delete [] TempSkipBYTE;
- }
-
- // This code reads 1, 4, 8, 24, and 32-bpp files
- // with a more-efficient buffered technique.
-
- int i,j;
- if( BitDepth != 16 )
- {
- int BufferSize = (int) ( (Width*BitDepth) / 8.0 );
- while( 8*BufferSize < Width*BitDepth )
- { BufferSize++; }
- while( BufferSize % 4 )
- { BufferSize++; }
- ebmpBYTE* Buffer;
- Buffer = new ebmpBYTE [BufferSize];
- j= Height-1;
- while( j > -1 )
- {
- int BytesRead = (int) fread( (char*) Buffer, 1, BufferSize, fp );
- if( BytesRead < BufferSize )
- {
- j = -1;
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Could not read proper amount of data." << endl;
- }
- }
- else
- {
- bool Success = false;
- if( BitDepth == 1 )
- { Success = Read1bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 4 )
- { Success = Read4bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 8 )
- { Success = Read8bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 24 )
- { Success = Read24bitRow( Buffer, BufferSize, j ); }
- if( BitDepth == 32 )
- { Success = Read32bitRow( Buffer, BufferSize, j ); }
- if( !Success )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Could not read enough pixel data!" << endl;
- }
- j = -1;
- }
- }
- j--;
- }
- delete [] Buffer;
- }
-
- if( BitDepth == 16 )
- {
- int DataBytes = Width*2;
- int PaddingBytes = ( 4 - DataBytes % 4 ) % 4;
-
- // set the default mask
-
- ebmpWORD BlueMask = 31; // bits 12-16
- ebmpWORD GreenMask = 992; // bits 7-11
- ebmpWORD RedMask = 31744; // bits 2-6
-
- // read the bit fields, if necessary, to
- // override the default 5-5-5 mask
-
- if( bmih.biCompression != 0 )
- {
- // read the three bit masks
-
- ebmpWORD TempMaskWORD;
- ebmpWORD ZeroWORD;
-
- SafeFread( (char*) &RedMask , 2 , 1 , fp );
- if( IsBigEndian() )
- { RedMask = FlipWORD(RedMask); }
- SafeFread( (char*) &TempMaskWORD , 2, 1, fp );
-
- SafeFread( (char*) &GreenMask , 2 , 1 , fp );
- if( IsBigEndian() )
- { GreenMask = FlipWORD(GreenMask); }
- SafeFread( (char*) &TempMaskWORD , 2, 1, fp );
-
- SafeFread( (char*) &BlueMask , 2 , 1 , fp );
- if( IsBigEndian() )
- { BlueMask = FlipWORD(BlueMask); }
- SafeFread( (char*) &TempMaskWORD , 2, 1, fp );
- }
-
- // read and skip any meta data
-
- if( BytesToSkip > 0 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Extra meta data detected in file "
- << FileName << endl
- << " Data will be skipped." << endl;
- }
- ebmpBYTE* TempSkipBYTE;
- TempSkipBYTE = new ebmpBYTE [BytesToSkip];
- SafeFread( (char*) TempSkipBYTE , BytesToSkip , 1 , fp);
- delete [] TempSkipBYTE;
- }
-
- // determine the red, green and blue shifts
-
- int GreenShift = 0;
- ebmpWORD TempShiftWORD = GreenMask;
- while( TempShiftWORD > 31 )
- { TempShiftWORD = TempShiftWORD>>1; GreenShift++; }
- int BlueShift = 0;
- TempShiftWORD = BlueMask;
- while( TempShiftWORD > 31 )
- { TempShiftWORD = TempShiftWORD>>1; BlueShift++; }
- int RedShift = 0;
- TempShiftWORD = RedMask;
- while( TempShiftWORD > 31 )
- { TempShiftWORD = TempShiftWORD>>1; RedShift++; }
-
- // read the actual pixels
-
- for( j=Height-1 ; j >= 0 ; j-- )
- {
- i=0;
- int ReadNumber = 0;
- while( ReadNumber < DataBytes )
- {
- ebmpWORD TempWORD;
- SafeFread( (char*) &TempWORD , 2 , 1 , fp );
- if( IsBigEndian() )
- { TempWORD = FlipWORD(TempWORD); }
- ReadNumber += 2;
-
- ebmpWORD Red = RedMask & TempWORD;
- ebmpWORD Green = GreenMask & TempWORD;
- ebmpWORD Blue = BlueMask & TempWORD;
-
- ebmpBYTE BlueBYTE = (ebmpBYTE) 8*(Blue>>BlueShift);
- ebmpBYTE GreenBYTE = (ebmpBYTE) 8*(Green>>GreenShift);
- ebmpBYTE RedBYTE = (ebmpBYTE) 8*(Red>>RedShift);
-
- (Pixels[i][j]).Red = RedBYTE;
- (Pixels[i][j]).Green = GreenBYTE;
- (Pixels[i][j]).Blue = BlueBYTE;
-
- i++;
- }
- ReadNumber = 0;
- while( ReadNumber < PaddingBytes )
- {
- ebmpBYTE TempBYTE;
- SafeFread( (char*) &TempBYTE , 1, 1, fp);
- ReadNumber++;
- }
- }
-
- }
-
- fclose(fp);
- return true;
-}
-
-bool BMP::CreateStandardColorTable( void )
-{
- using namespace std;
- if( BitDepth != 1 && BitDepth != 4 && BitDepth != 8 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Attempted to create color table at a bit" << endl
- << " depth that does not require a color table." << endl
- << " Ignoring request." << endl;
- }
- return false;
- }
-
- if( BitDepth == 1 )
- {
- int i;
- for( i=0 ; i < 2 ; i++ )
- {
- Colors[i].Red = i*255;
- Colors[i].Green = i*255;
- Colors[i].Blue = i*255;
- Colors[i].Alpha = 0;
- }
- return true;
- }
-
- if( BitDepth == 4 )
- {
- int i = 0;
- int j,k,ell;
-
- // simplify the code for the first 8 colors
- for( ell=0 ; ell < 2 ; ell++ )
- {
- for( k=0 ; k < 2 ; k++ )
- {
- for( j=0 ; j < 2 ; j++ )
- {
- Colors[i].Red = j*128;
- Colors[i].Green = k*128;
- Colors[i].Blue = ell*128;
- i++;
- }
- }
- }
-
- // simplify the code for the last 8 colors
- for( ell=0 ; ell < 2 ; ell++ )
- {
- for( k=0 ; k < 2 ; k++ )
- {
- for( j=0 ; j < 2 ; j++ )
- {
- Colors[i].Red = j*255;
- Colors[i].Green = k*255;
- Colors[i].Blue = ell*255;
- i++;
- }
- }
- }
-
- // overwrite the duplicate color
- i=8;
- Colors[i].Red = 192;
- Colors[i].Green = 192;
- Colors[i].Blue = 192;
-
- for( i=0 ; i < 16 ; i++ )
- { Colors[i].Alpha = 0; }
- return true;
- }
-
- if( BitDepth == 8 )
- {
- int i=0;
- int j,k,ell;
-
- // do an easy loop, which works for all but colors
- // 0 to 9 and 246 to 255
- for( ell=0 ; ell < 4 ; ell++ )
- {
- for( k=0 ; k < 8 ; k++ )
- {
- for( j=0; j < 8 ; j++ )
- {
- Colors[i].Red = j*32;
- Colors[i].Green = k*32;
- Colors[i].Blue = ell*64;
- Colors[i].Alpha = 0;
- i++;
- }
- }
- }
-
- // now redo the first 8 colors
- i=0;
- for( ell=0 ; ell < 2 ; ell++ )
- {
- for( k=0 ; k < 2 ; k++ )
- {
- for( j=0; j < 2 ; j++ )
- {
- Colors[i].Red = j*128;
- Colors[i].Green = k*128;
- Colors[i].Blue = ell*128;
- i++;
- }
- }
- }
-
- // overwrite colors 7, 8, 9
- i=7;
- Colors[i].Red = 192;
- Colors[i].Green = 192;
- Colors[i].Blue = 192;
- i++; // 8
- Colors[i].Red = 192;
- Colors[i].Green = 220;
- Colors[i].Blue = 192;
- i++; // 9
- Colors[i].Red = 166;
- Colors[i].Green = 202;
- Colors[i].Blue = 240;
-
- // overwrite colors 246 to 255
- i=246;
- Colors[i].Red = 255;
- Colors[i].Green = 251;
- Colors[i].Blue = 240;
- i++; // 247
- Colors[i].Red = 160;
- Colors[i].Green = 160;
- Colors[i].Blue = 164;
- i++; // 248
- Colors[i].Red = 128;
- Colors[i].Green = 128;
- Colors[i].Blue = 128;
- i++; // 249
- Colors[i].Red = 255;
- Colors[i].Green = 0;
- Colors[i].Blue = 0;
- i++; // 250
- Colors[i].Red = 0;
- Colors[i].Green = 255;
- Colors[i].Blue = 0;
- i++; // 251
- Colors[i].Red = 255;
- Colors[i].Green = 255;
- Colors[i].Blue = 0;
- i++; // 252
- Colors[i].Red = 0;
- Colors[i].Green = 0;
- Colors[i].Blue = 255;
- i++; // 253
- Colors[i].Red = 255;
- Colors[i].Green = 0;
- Colors[i].Blue = 255;
- i++; // 254
- Colors[i].Red = 0;
- Colors[i].Green = 255;
- Colors[i].Blue = 255;
- i++; // 255
- Colors[i].Red = 255;
- Colors[i].Green = 255;
- Colors[i].Blue = 255;
-
- return true;
- }
- return true;
-}
-
-bool SafeFread( char* buffer, int size, int number, FILE* fp )
-{
- using namespace std;
- int ItemsRead;
- if( feof(fp) )
- { return false; }
- ItemsRead = (int) fread( buffer , size , number , fp );
- if( ItemsRead < number )
- { return false; }
- return true;
-}
-
-void BMP::SetDPI( int HorizontalDPI, int VerticalDPI )
-{
- XPelsPerMeter = (int) ( HorizontalDPI * 39.37007874015748 );
- YPelsPerMeter = (int) ( VerticalDPI * 39.37007874015748 );
-}
-
-// int BMP::TellVerticalDPI( void ) const
-int BMP::TellVerticalDPI( void )
-{
- if( !YPelsPerMeter )
- { YPelsPerMeter = DefaultYPelsPerMeter; }
- return (int) ( YPelsPerMeter / (double) 39.37007874015748 );
-}
-
-// int BMP::TellHorizontalDPI( void ) const
-int BMP::TellHorizontalDPI( void )
-{
- if( !XPelsPerMeter )
- { XPelsPerMeter = DefaultXPelsPerMeter; }
- return (int) ( XPelsPerMeter / (double) 39.37007874015748 );
-}
-
-/* These functions are defined in EasyBMP_VariousBMPutilities.h */
-
-BMFH GetBMFH( const char* szFileNameIn )
-{
- using namespace std;
- BMFH bmfh;
-
- FILE* fp;
- fp = fopen( szFileNameIn,"rb");
-
- if( !fp )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Cannot initialize from file "
- << szFileNameIn << "." << endl
- << " File cannot be opened or does not exist."
- << endl;
- }
- bmfh.bfType = 0;
- return bmfh;
- }
-
- SafeFread( (char*) &(bmfh.bfType) , sizeof(ebmpWORD) , 1 , fp );
- SafeFread( (char*) &(bmfh.bfSize) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmfh.bfReserved1) , sizeof(ebmpWORD) , 1 , fp );
- SafeFread( (char*) &(bmfh.bfReserved2) , sizeof(ebmpWORD) , 1 , fp );
- SafeFread( (char*) &(bmfh.bfOffBits) , sizeof(ebmpDWORD) , 1 , fp );
-
- fclose( fp );
-
- if( IsBigEndian() )
- { bmfh.SwitchEndianess(); }
-
- return bmfh;
-}
-
-BMIH GetBMIH( const char* szFileNameIn )
-{
- using namespace std;
- BMFH bmfh;
- BMIH bmih;
-
- FILE* fp;
- fp = fopen( szFileNameIn,"rb");
-
- if( !fp )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Cannot initialize from file "
- << szFileNameIn << "." << endl
- << " File cannot be opened or does not exist."
- << endl;
- }
- return bmih;
- }
-
- // read the bmfh, i.e., first 14 bytes (just to get it out of the way);
-
- ebmpBYTE TempBYTE;
- int i;
- for( i = 14 ; i > 0 ; i-- )
- { SafeFread( (char*) &TempBYTE , sizeof(ebmpBYTE) , 1, fp ); }
-
- // read the bmih
-
- SafeFread( (char*) &(bmih.biSize) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biWidth) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biHeight) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biPlanes) , sizeof(ebmpWORD) , 1 , fp );
-
- SafeFread( (char*) &(bmih.biBitCount) , sizeof(ebmpWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biCompression) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biSizeImage) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biXPelsPerMeter) , sizeof(ebmpDWORD) , 1 , fp );
-
- SafeFread( (char*) &(bmih.biYPelsPerMeter) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biClrUsed) , sizeof(ebmpDWORD) , 1 , fp );
- SafeFread( (char*) &(bmih.biClrImportant) , sizeof(ebmpDWORD) , 1 , fp );
-
- fclose( fp );
-
- if( IsBigEndian() )
- { bmih.SwitchEndianess(); }
-
- return bmih;
-}
-
-void DisplayBitmapInfo( const char* szFileNameIn )
-{
- using namespace std;
- FILE* fp;
- fp = fopen( szFileNameIn,"rb");
-
- if( !fp )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: Cannot initialize from file "
- << szFileNameIn << "." << endl
- << " File cannot be opened or does not exist."
- << endl;
- }
- return;
- }
- fclose( fp );
-
- // don't duplicate work! Just use the functions from above!
-
- BMFH bmfh = GetBMFH(szFileNameIn);
- BMIH bmih = GetBMIH(szFileNameIn);
-
- cout << "File information for file " << szFileNameIn
- << ":" << endl << endl;
-
- cout << "BITMAPFILEHEADER:" << endl
- << "bfType: " << bmfh.bfType << endl
- << "bfSize: " << bmfh.bfSize << endl
- << "bfReserved1: " << bmfh.bfReserved1 << endl
- << "bfReserved2: " << bmfh.bfReserved2 << endl
- << "bfOffBits: " << bmfh.bfOffBits << endl << endl;
-
- cout << "BITMAPINFOHEADER:" << endl
- << "biSize: " << bmih.biSize << endl
- << "biWidth: " << bmih.biWidth << endl
- << "biHeight: " << bmih.biHeight << endl
- << "biPlanes: " << bmih.biPlanes << endl
- << "biBitCount: " << bmih.biBitCount << endl
- << "biCompression: " << bmih.biCompression << endl
- << "biSizeImage: " << bmih.biSizeImage << endl
- << "biXPelsPerMeter: " << bmih.biXPelsPerMeter << endl
- << "biYPelsPerMeter: " << bmih.biYPelsPerMeter << endl
- << "biClrUsed: " << bmih.biClrUsed << endl
- << "biClrImportant: " << bmih.biClrImportant << endl << endl;
- return;
-}
-
-int GetBitmapColorDepth( const char* szFileNameIn )
-{
- BMIH bmih = GetBMIH( szFileNameIn );
- return (int) bmih.biBitCount;
-}
-
-void PixelToPixelCopy( BMP& From, int FromX, int FromY,
- BMP& To, int ToX, int ToY)
-{
- *To(ToX,ToY) = *From(FromX,FromY);
- return;
-}
-
-void PixelToPixelCopyTransparent( BMP& From, int FromX, int FromY,
- BMP& To, int ToX, int ToY,
- RGBApixel& Transparent )
-{
- if( From(FromX,FromY)->Red != Transparent.Red ||
- From(FromX,FromY)->Green != Transparent.Green ||
- From(FromX,FromY)->Blue != Transparent.Blue )
- { *To(ToX,ToY) = *From(FromX,FromY); }
- return;
-}
-
-void RangedPixelToPixelCopy( BMP& From, int FromL , int FromR, int FromB, int FromT,
- BMP& To, int ToX, int ToY )
-{
- // make sure the conventions are followed
- if( FromB < FromT )
- { int Temp = FromT; FromT = FromB; FromB = Temp; }
-
- // make sure that the copied regions exist in both bitmaps
- if( FromR >= From.TellWidth() )
- { FromR = From.TellWidth()-1; }
- if( FromL < 0 ){ FromL = 0; }
-
- if( FromB >= From.TellHeight() )
- { FromB = From.TellHeight()-1; }
- if( FromT < 0 ){ FromT = 0; }
-
- if( ToX+(FromR-FromL) >= To.TellWidth() )
- { FromR = To.TellWidth()-1+FromL-ToX; }
- if( ToY+(FromB-FromT) >= To.TellHeight() )
- { FromB = To.TellHeight()-1+FromT-ToY; }
-
- int i,j;
- for( j=FromT ; j <= FromB ; j++ )
- {
- for( i=FromL ; i <= FromR ; i++ )
- {
- PixelToPixelCopy( From, i,j,
- To, ToX+(i-FromL), ToY+(j-FromT) );
- }
- }
-
- return;
-}
-
-void RangedPixelToPixelCopyTransparent(
- BMP& From, int FromL , int FromR, int FromB, int FromT,
- BMP& To, int ToX, int ToY ,
- RGBApixel& Transparent )
-{
- // make sure the conventions are followed
- if( FromB < FromT )
- { int Temp = FromT; FromT = FromB; FromB = Temp; }
-
- // make sure that the copied regions exist in both bitmaps
- if( FromR >= From.TellWidth() )
- { FromR = From.TellWidth()-1; }
- if( FromL < 0 ){ FromL = 0; }
-
- if( FromB >= From.TellHeight() )
- { FromB = From.TellHeight()-1; }
- if( FromT < 0 ){ FromT = 0; }
-
- if( ToX+(FromR-FromL) >= To.TellWidth() )
- { FromR = To.TellWidth()-1+FromL-ToX; }
- if( ToY+(FromB-FromT) >= To.TellHeight() )
- { FromB = To.TellHeight()-1+FromT-ToY; }
-
- int i,j;
- for( j=FromT ; j <= FromB ; j++ )
- {
- for( i=FromL ; i <= FromR ; i++ )
- {
- PixelToPixelCopyTransparent( From, i,j,
- To, ToX+(i-FromL), ToY+(j-FromT) ,
- Transparent);
- }
- }
-
- return;
-}
-
-bool CreateGrayscaleColorTable( BMP& InputImage )
-{
- using namespace std;
- int BitDepth = InputImage.TellBitDepth();
- if( BitDepth != 1 && BitDepth != 4 && BitDepth != 8 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Warning: Attempted to create color table at a bit" << endl
- << " depth that does not require a color table." << endl
- << " Ignoring request." << endl;
- }
- return false;
- }
- int i;
- int NumberOfColors = InputImage.TellNumberOfColors();
-
- ebmpBYTE StepSize;
- if( BitDepth != 1 )
- { StepSize = 255/(NumberOfColors-1); }
- else
- { StepSize = 255; }
-
- for( i=0 ; i < NumberOfColors ; i++ )
- {
- ebmpBYTE TempBYTE = i*StepSize;
- RGBApixel TempColor;
- TempColor.Red = TempBYTE;
- TempColor.Green = TempBYTE;
- TempColor.Blue = TempBYTE;
- TempColor.Alpha = 0;
- InputImage.SetColor( i , TempColor );
- }
- return true;
-}
-
-bool BMP::Read32bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int i;
- if( Width*4 > BufferSize )
- { return false; }
- for( i=0 ; i < Width ; i++ )
- { memcpy( (char*) &(Pixels[i][Row]), (char*) Buffer+4*i, 4 ); }
- return true;
-}
-
-bool BMP::Read24bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int i;
- if( Width*3 > BufferSize )
- { return false; }
- for( i=0 ; i < Width ; i++ )
- { memcpy( (char*) &(Pixels[i][Row]), Buffer+3*i, 3 ); }
- return true;
-}
-
-bool BMP::Read8bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int i;
- if( Width > BufferSize )
- { return false; }
- for( i=0 ; i < Width ; i++ )
- {
- int Index = Buffer[i];
- *( this->operator()(i,Row) )= GetColor(Index);
- }
- return true;
-}
-
-bool BMP::Read4bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int Shifts[2] = {4 ,0 };
- int Masks[2] = {240,15};
-
- int i=0;
- int j;
- int k=0;
- if( Width > 2*BufferSize )
- { return false; }
- while( i < Width )
- {
- j=0;
- while( j < 2 && i < Width )
- {
- int Index = (int) ( (Buffer[k]&Masks[j]) >> Shifts[j]);
- *( this->operator()(i,Row) )= GetColor(Index);
- i++; j++;
- }
- k++;
- }
- return true;
-}
-bool BMP::Read1bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int Shifts[8] = {7 ,6 ,5 ,4 ,3,2,1,0};
- int Masks[8] = {128,64,32,16,8,4,2,1};
-
- int i=0;
- int j;
- int k=0;
-
- if( Width > 8*BufferSize )
- { return false; }
- while( i < Width )
- {
- j=0;
- while( j < 8 && i < Width )
- {
- int Index = (int) ( (Buffer[k]&Masks[j]) >> Shifts[j]);
- *( this->operator()(i,Row) )= GetColor(Index);
- i++; j++;
- }
- k++;
- }
- return true;
-}
-
-bool BMP::Write32bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int i;
- if( Width*4 > BufferSize )
- { return false; }
- for( i=0 ; i < Width ; i++ )
- { memcpy( (char*) Buffer+4*i, (char*) &(Pixels[i][Row]), 4 ); }
- return true;
-}
-
-bool BMP::Write24bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int i;
- if( Width*3 > BufferSize )
- { return false; }
- for( i=0 ; i < Width ; i++ )
- { memcpy( (char*) Buffer+3*i, (char*) &(Pixels[i][Row]), 3 ); }
- return true;
-}
-
-bool BMP::Write8bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int i;
- if( Width > BufferSize )
- { return false; }
- for( i=0 ; i < Width ; i++ )
- { Buffer[i] = FindClosestColor( Pixels[i][Row] ); }
- return true;
-}
-
-bool BMP::Write4bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int PositionWeights[2] = {16,1};
-
- int i=0;
- int j;
- int k=0;
- if( Width > 2*BufferSize )
- { return false; }
- while( i < Width )
- {
- j=0;
- int Index = 0;
- while( j < 2 && i < Width )
- {
- Index += ( PositionWeights[j]* (int) FindClosestColor( Pixels[i][Row] ) );
- i++; j++;
- }
- Buffer[k] = (ebmpBYTE) Index;
- k++;
- }
- return true;
-}
-
-bool BMP::Write1bitRow( ebmpBYTE* Buffer, int BufferSize, int Row )
-{
- int PositionWeights[8] = {128,64,32,16,8,4,2,1};
-
- int i=0;
- int j;
- int k=0;
- if( Width > 8*BufferSize )
- { return false; }
- while( i < Width )
- {
- j=0;
- int Index = 0;
- while( j < 8 && i < Width )
- {
- Index += ( PositionWeights[j]* (int) FindClosestColor( Pixels[i][Row] ) );
- i++; j++;
- }
- Buffer[k] = (ebmpBYTE) Index;
- k++;
- }
- return true;
-}
-
-ebmpBYTE BMP::FindClosestColor( RGBApixel& input )
-{
- using namespace std;
-
- int i=0;
- int NumberOfColors = TellNumberOfColors();
- ebmpBYTE BestI = 0;
- int BestMatch = 999999;
-
- while( i < NumberOfColors )
- {
- RGBApixel Attempt = GetColor( i );
- int TempMatch = IntSquare( (int) Attempt.Red - (int) input.Red )
- + IntSquare( (int) Attempt.Green - (int) input.Green )
- + IntSquare( (int) Attempt.Blue - (int) input.Blue );
- if( TempMatch < BestMatch )
- { BestI = (ebmpBYTE) i; BestMatch = TempMatch; }
- if( BestMatch < 1 )
- { i = NumberOfColors; }
- i++;
- }
- return BestI;
-}
-
-bool EasyBMPcheckDataSize( void )
-{
- using namespace std;
- bool ReturnValue = true;
- if( sizeof( ebmpBYTE ) != 1 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: ebmpBYTE has the wrong size ("
- << sizeof( ebmpBYTE ) << " bytes)," << endl
- << " Compared to the expected 1 byte value" << endl;
- }
- ReturnValue = false;
- }
- if( sizeof( ebmpWORD ) != 2 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: ebmpWORD has the wrong size ("
- << sizeof( ebmpWORD ) << " bytes)," << endl
- << " Compared to the expected 2 byte value" << endl;
- }
- ReturnValue = false;
- }
- if( sizeof( ebmpDWORD ) != 4 )
- {
- if( EasyBMPwarnings )
- {
- cout << "EasyBMP Error: ebmpDWORD has the wrong size ("
- << sizeof( ebmpDWORD ) << " bytes)," << endl
- << " Compared to the expected 4 byte value" << endl;
- }
- ReturnValue = false;
- }
- return ReturnValue;
-}
-
-bool Rescale( BMP& InputImage , char mode, int NewDimension )
-{
- using namespace std;
- int CapMode = toupper( mode );
-
- BMP OldImage( InputImage );
-
- if( CapMode != 'P' &&
- CapMode != 'W' &&
- CapMode != 'H' &&
- CapMode != 'F' )
- {
- if( EasyBMPwarnings )
- {
- char ErrorMessage [1024];
- sprintf( ErrorMessage, "EasyBMP Error: Unknown rescale mode %c requested\n" , mode );
- cout << ErrorMessage;
- }
- return false;
- }
-
- int NewWidth =0;
- int NewHeight =0;
-
- int OldWidth = OldImage.TellWidth();
- int OldHeight= OldImage.TellHeight();
-
- if( CapMode == 'P' )
- {
- NewWidth = (int) floor( OldWidth * NewDimension / 100.0 );
- NewHeight = (int) floor( OldHeight * NewDimension / 100.0 );
- }
- if( CapMode == 'F' )
- {
- if( OldWidth > OldHeight )
- { CapMode = 'W'; }
- else
- { CapMode = 'H'; }
- }
-
- if( CapMode == 'W' )
- {
- double percent = (double) NewDimension / (double) OldWidth;
- NewWidth = NewDimension;
- NewHeight = (int) floor( OldHeight * percent );
- }
- if( CapMode == 'H' )
- {
- double percent = (double) NewDimension / (double) OldHeight;
- NewHeight = NewDimension;
- NewWidth = (int) floor( OldWidth * percent );
- }
-
- if( NewWidth < 1 )
- { NewWidth = 1; }
- if( NewHeight < 1 )
- { NewHeight = 1; }
-
- InputImage.SetSize( NewWidth, NewHeight );
- InputImage.SetBitDepth( 24 );
-
- int I,J;
- double ThetaI,ThetaJ;
-
- for( int j=0; j < NewHeight-1 ; j++ )
- {
- ThetaJ = (double)(j*(OldHeight-1.0))
- /(double)(NewHeight-1.0);
- J = (int) floor( ThetaJ );
- ThetaJ -= J;
-
- for( int i=0; i < NewWidth-1 ; i++ )
- {
- ThetaI = (double)(i*(OldWidth-1.0))
- /(double)(NewWidth-1.0);
- I = (int) floor( ThetaI );
- ThetaI -= I;
-
- InputImage(i,j)->Red = (ebmpBYTE)
- ( (1.0-ThetaI-ThetaJ+ThetaI*ThetaJ)*(OldImage(I,J)->Red)
- +(ThetaI-ThetaI*ThetaJ)*(OldImage(I+1,J)->Red)
- +(ThetaJ-ThetaI*ThetaJ)*(OldImage(I,J+1)->Red)
- +(ThetaI*ThetaJ)*(OldImage(I+1,J+1)->Red) );
- InputImage(i,j)->Green = (ebmpBYTE)
- ( (1.0-ThetaI-ThetaJ+ThetaI*ThetaJ)*OldImage(I,J)->Green
- +(ThetaI-ThetaI*ThetaJ)*OldImage(I+1,J)->Green
- +(ThetaJ-ThetaI*ThetaJ)*OldImage(I,J+1)->Green
- +(ThetaI*ThetaJ)*OldImage(I+1,J+1)->Green );
- InputImage(i,j)->Blue = (ebmpBYTE)
- ( (1.0-ThetaI-ThetaJ+ThetaI*ThetaJ)*OldImage(I,J)->Blue
- +(ThetaI-ThetaI*ThetaJ)*OldImage(I+1,J)->Blue
- +(ThetaJ-ThetaI*ThetaJ)*OldImage(I,J+1)->Blue
- +(ThetaI*ThetaJ)*OldImage(I+1,J+1)->Blue );
- }
- InputImage(NewWidth-1,j)->Red = (ebmpBYTE)
- ( (1.0-ThetaJ)*(OldImage(OldWidth-1,J)->Red)
- + ThetaJ*(OldImage(OldWidth-1,J+1)->Red) );
- InputImage(NewWidth-1,j)->Green = (ebmpBYTE)
- ( (1.0-ThetaJ)*(OldImage(OldWidth-1,J)->Green)
- + ThetaJ*(OldImage(OldWidth-1,J+1)->Green) );
- InputImage(NewWidth-1,j)->Blue = (ebmpBYTE)
- ( (1.0-ThetaJ)*(OldImage(OldWidth-1,J)->Blue)
- + ThetaJ*(OldImage(OldWidth-1,J+1)->Blue) );
- }
-
- for( int i=0 ; i < NewWidth-1 ; i++ )
- {
- ThetaI = (double)(i*(OldWidth-1.0))
- /(double)(NewWidth-1.0);
- I = (int) floor( ThetaI );
- ThetaI -= I;
- InputImage(i,NewHeight-1)->Red = (ebmpBYTE)
- ( (1.0-ThetaI)*(OldImage(I,OldHeight-1)->Red)
- + ThetaI*(OldImage(I,OldHeight-1)->Red) );
- InputImage(i,NewHeight-1)->Green = (ebmpBYTE)
- ( (1.0-ThetaI)*(OldImage(I,OldHeight-1)->Green)
- + ThetaI*(OldImage(I,OldHeight-1)->Green) );
- InputImage(i,NewHeight-1)->Blue = (ebmpBYTE)
- ( (1.0-ThetaI)*(OldImage(I,OldHeight-1)->Blue)
- + ThetaI*(OldImage(I,OldHeight-1)->Blue) );
- }
-
- *InputImage(NewWidth-1,NewHeight-1) = *OldImage(OldWidth-1,OldHeight-1);
- return true;
-}
generated by cgit v1.3 (git 2.53.0) at 2026-07-11 06:10:33 +0000