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/************************************************************************/
/* Description of a bitmap. */
/************************************************************************/
# ifndef BITMAP_H
# define BITMAP_H
# include <stdio.h>
# include <sioGeneral.h>
/************************************************************************/
/* Color encodings. */
/************************************************************************/
# define BMcoBLACKWHITE 0
# define BMcoWHITEBLACK 1
# define BMcoRGB 2
# define BMcoRGB8PALETTE 3
# define BMcoILLEGALVALUE 4
extern const char * bmcoIntToString( int colorEncodingInt );
extern int bmcoStringToInt( const char * colorEncodingString );
extern const char * bmcoStrings[];
/************************************************************************/
/* Units of measurement. */
/************************************************************************/
# define BMunCM 0
# define BMunINCH 1
# define BMunPOINT 2
# define BMunILLEGALVALUE 3
# define POINTS_PER_CM 28.3465
extern const char * bmunIntToString( int unitInt );
extern int bmunStringToInt( const char * unitString );
extern const char * bmunStrings[];
/************************************************************************/
/* An RGB8 Color. */
/* The most usual way to display images on a computer screen. */
/************************************************************************/
typedef struct RGB8Color
{
unsigned char rgb8Red;
unsigned char rgb8Green;
unsigned char rgb8Blue;
} RGB8Color;
/************************************************************************/
/* Description of a bitmap. */
/************************************************************************/
typedef struct BitmapDescription
{
/********************************/
/* Number of bytes in an image */
/* buffer; Idem for one row. */
/* Rows are never divided over */
/* more than one byte. */
/********************************/
unsigned int bdBufferLength;
unsigned int bdBytesPerRow;
/********************************/
/* Height/width of an image */
/********************************/
unsigned int bdPixelsWide;
unsigned int bdPixelsHigh;
/********************************/
/* Description of how pixels */
/* are encoded. */
/* For direct images, all three*/
/* refer to the buffer. */
/* For palette type images, */
/* BitsPerSample, */
/* SamplesPerPixel refer to the*/
/* image; BitsPerPixel refers */
/* to the buffer. */
/********************************/
int bdBitsPerSample;
int bdSamplesPerPixel;
int bdBitsPerPixel;
/********************************/
/* Pixels per metric unit; */
/* The unit. */
/********************************/
int bdXResolution;
int bdYResolution;
unsigned char bdUnit;
/********************************/
/* How are colors encoded. */
/********************************/
unsigned char bdColorEncoding;
/********************************/
/* Does it have a transparency */
/* mask? */
/********************************/
unsigned char bdHasAlpha;
/********************************/
/* Palette. */
/* ColorCount is only relevant */
/* with a palette. */
/********************************/
unsigned int bdColorCount;
union
{
RGB8Color * bdpRGB8Palette;
} bdPaletteUninterpreted;
# define bdRGB8Palette bdPaletteUninterpreted.bdpRGB8Palette
} BitmapDescription;
/************************************************************************/
/* Description of a bitmap file format. */
/************************************************************************/
typedef struct BitmapFileType
{
int (*bftWrite)( const char * filename,
const unsigned char * buffer,
const BitmapDescription * bd,
int privateFormat,
double compressionFactor );
int (*bftCanWrite)( const BitmapDescription * bd,
int privateFormat,
double compressionFactor );
int (*bftRead)( const char * filename,
unsigned char ** pBuffer,
BitmapDescription * bd,
int * pPrivateFormat,
double * pCompressionFactor );
char * bftFileExtension;
char * bftFileFilter;
char * bftTypeId;
char * bftTypeDescription;
} BitmapFileType;
typedef struct BitmapFileFormat
{
char * bffDescription;
char * bffId;
int bffPrivate;
BitmapFileType * bffFileType;
} BitmapFileFormat;
/************************************************************************/
/* Description of selection from a bitmap. */
/************************************************************************/
typedef struct BitmapSelection
{
int bsX0;
int bsY0;
int bsPixelsWide;
int bsPixelsHigh;
} BitmapSelection;
/************************************************************************/
/* Catalog of available of a bitmap file formats. */
/************************************************************************/
extern BitmapFileFormat bmFileFormats[];
extern int bmNumberOfFileFormats;
extern BitmapFileType * bmFileTypes[];
extern int bmNumberOfFileTypes;
/************************************************************************/
/* For Reading/Writing from/to streams. */
/************************************************************************/
extern int bmWriteGifFile( const char * filename,
const unsigned char * buffer,
const BitmapDescription * bd,
int privateFormat,
double factor );
extern int bmCanWriteGifFile( const BitmapDescription * bd,
int privateFormat,
double factor );
extern int bmWriteJpegFile( const char * filename,
const unsigned char * buffer,
const BitmapDescription * bd,
int privateFormat,
double factor );
extern int bmCanWriteJpegFile( const BitmapDescription * bd,
int privateFormat,
double factor );
/************************************************************************/
/* Write part of a bitmap to postscript. */
/************************************************************************/
extern int bmPsPrintBitmap( FILE * f,
int level,
double xscale,
double yscale,
int ox,
int oy,
int x0,
int y0,
int wide,
int high,
const BitmapDescription * bd,
const unsigned char * buffer );
extern int bmPsPrintBitmapData( FILE * f,
int level,
double xscale,
double yscale,
int ox,
int oy,
int x0,
int y0,
int wide,
int high,
const BitmapDescription * bd,
const unsigned char * buffer );
extern int bmPngWritePng( const BitmapDescription * bd,
const unsigned char * buffer,
SimpleOutputStream * sos );
extern int bmXvWritePaste( const BitmapDescription * bd,
const unsigned char * buffer,
SimpleOutputStream * sos );
extern int bmBmpReadDib( BitmapDescription * bd,
unsigned char ** pBuffer,
SimpleInputStream * sis );
extern int bmJpegReadJfif( BitmapDescription * bd,
unsigned char ** pBuffer,
SimpleInputStream * sis );
extern int bmPngReadPng( BitmapDescription * bd,
unsigned char ** pBuffer,
SimpleInputStream * sis );
extern int bmXvReadPaste( BitmapDescription * bd,
unsigned char ** pBuffer,
SimpleInputStream * sis );
extern int bmBmpSaveDib( const BitmapDescription * bd,
const unsigned char * buffer,
int bytesWritten,
void * voidsos );
/************************************************************************/
/* Routines. */
/************************************************************************/
extern void bmInitDescription( BitmapDescription * bd );
extern void bmCleanDescription( BitmapDescription * bd );
extern int bmCopyDescription( BitmapDescription * bdOut,
const BitmapDescription * bdIn );
extern int bmWrite( const char * filename,
const unsigned char * buffer,
BitmapDescription * bd,
int fileFormat,
double compressionFactor );
extern int bmCanWrite( BitmapDescription * bd,
int fileFormat,
double compressionFactor );
extern int bmRead( const char * filename,
unsigned char ** pBuffer,
BitmapDescription * bd,
int * pFileFormat,
double * pCompressionFactor );
extern int bmSelect( unsigned char ** pBuffer,
BitmapDescription * bdOut,
const unsigned char * inputBuffer,
const BitmapDescription * bdIn,
int x0,
int y0,
int xs,
int ys );
extern int bmComponents( void *** pComponents,
int * pCount,
const unsigned char * buffer,
const BitmapDescription * bd );
extern int bmComponentBitmap( unsigned char ** buffer,
BitmapDescription * bdout,
BitmapSelection * bs,
const BitmapDescription * bdin,
const void * component );
extern int bmGroupBitmap( unsigned char ** buffer,
BitmapDescription * bdout,
BitmapSelection * bs,
const BitmapDescription * bdin,
const void * vbc );
int bmgGroupBitmap( unsigned char ** pBuffer,
BitmapDescription * bdout,
BitmapSelection * bs,
const BitmapDescription * bdin,
const void * vcg );
extern int bmGroups( void *** pGroups,
void ** comps,
int ncomp,
const BitmapDescription * bd );
extern void bmFreeGroups( void ** groups,
int numberOfGroups );
/************************************************************************/
/* Palette expansion for drawing. */
/************************************************************************/
void bmExpandRGB8Palette( unsigned char * to,
const unsigned char * from,
int pixelsWide,
int bitsPerColor,
RGB8Color * palette,
int hasAlpha );
/************************************************************************/
/* Bitmap transformations. */
/************************************************************************/
typedef int (*BitmapTransformation)(BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int option );
extern int bmWhiteToTransparent(BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
extern int bmVerticalFlip( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
extern int bmHorizontalFlip( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
extern int bmUpsideDown( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
extern int bmRotate90( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
extern int bmColorReduce( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int colorCount );
extern int bmBlur( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int colorCount );
int bmRotate( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
double angle );
int bmFilterSobel( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
int bmFilterLaplace( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
int bmFilterSmoothe( BitmapDescription * bdOut,
const BitmapDescription * bdIn,
unsigned char ** pBufOut,
const unsigned char * bufIn,
int ignoredInt );
# endif
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