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# include "bitmapConfig.h"
# include "bmintern.h"
# include <string.h>
# include <appDebugon.h>
/************************************************************************/
/* Translation back and forth between color encoding and string. */
/************************************************************************/
const char * bmcoStrings[]=
{
"black on white",
"white on black",
"RGB",
"RGB palette",
0
};
const char * bmcoIntToString( int colorEncodingInt )
{
if ( colorEncodingInt >= 0 &&
colorEncodingInt < sizeof( bmcoStrings )/sizeof(char *) -1 )
{ return bmcoStrings[colorEncodingInt]; }
LDEB(colorEncodingInt); return (char *)0;
}
int bmcoStringToInt( const char * colorEncodingString )
{
int i;
for ( i= 0; i < sizeof( bmcoStrings )/sizeof(char *) -1; i++ )
{
if ( ! strcmp( colorEncodingString, bmcoStrings[i] ) )
{ return i; }
}
SDEB(colorEncodingString); return -1;
}
/************************************************************************/
/* Translation back and forth between resolution unit and string. */
/************************************************************************/
const char * bmunStrings[]=
{
"m",
"inch",
"point",
"pixel",
0
};
const char * bmunIntToString( int unitInt )
{
if ( unitInt >= 0 &&
unitInt < sizeof( bmcoStrings )/sizeof(char *) -1 )
{ return bmunStrings[unitInt]; }
LDEB(unitInt); return (char *)0;
}
int bmunStringToInt( const char * unitString )
{
int i;
for ( i= 0; i < sizeof( bmunStrings )/sizeof(char *) -1; i++ )
{
if ( ! strcmp( unitString, bmunStrings[i] ) )
{ return i; }
}
SDEB(unitString); return -1;
}
/************************************************************************/
/* Initialise a BitmapDescription. */
/************************************************************************/
void bmInitDescription ( BitmapDescription * bd )
{
bd->bdBufferLength= 0;
bd->bdBytesPerRow= 0;
bd->bdPixelsWide= 0;
bd->bdPixelsHigh= 0;
bd->bdBitsPerSample= 0;
bd->bdSamplesPerPixel= 0;
bd->bdBitsPerPixel= 0;
bd->bdXResolution= 0;
bd->bdYResolution= 0;
bd->bdUnit= BMunILLEGALVALUE;
bd->bdColorEncoding= BMcoILLEGALVALUE;
bd->bdHasAlpha= 0;
/********************************************/
/* Or any other member of the union. */
/********************************************/
bd->bdColorCount= 0;
bd->bdRGB8Palette= (RGB8Color *)0;
}
/************************************************************************/
/* */
/* Clean a BitmapDescription. */
/* */
/************************************************************************/
void bmCleanDescription ( BitmapDescription * bd )
{
switch( bd->bdColorEncoding )
{
case BMcoRGB8PALETTE:
if ( bd->bdRGB8Palette )
{ free( bd->bdRGB8Palette ); }
break;
default:
break;
}
}
/************************************************************************/
/* */
/* Copy a BitmapDescription. */
/* */
/************************************************************************/
int bmCopyDescription ( BitmapDescription * to,
const BitmapDescription * from )
{
switch( from->bdColorEncoding )
{
case BMcoRGB8PALETTE:
*to= *from;
to->bdRGB8Palette= malloc( to->bdColorCount* sizeof(RGB8Color) );
if ( ! to->bdRGB8Palette )
{ XDEB(to->bdRGB8Palette); return -1; }
memcpy( to->bdRGB8Palette, from->bdRGB8Palette,
from->bdColorCount* sizeof( RGB8Color ) );
break;
default:
*to= *from;
break;
}
return 0;
}
/************************************************************************/
/* */
/* Byte masks */
/* */
/************************************************************************/
unsigned char Bmc1Masks[8]=
{ 0x80, 0x40, 0x20, 0x10, 0x8, 0x4, 0x2, 0x1 };
unsigned char Bmc7Masks[8]=
{ 0x7f, 0xbf, 0xdf, 0xef, 0xf7, 0xfb, 0xfd, 0xfe };
/************************************************************************/
/* */
/* Geometry. */
/* */
/************************************************************************/
void bmImageSizeTwips( int * pImageWideTwips,
int * pImageHighTwips,
const BitmapDescription * bd )
{
int imageWideTwips;
int imageHighTwips;
switch( bd->bdUnit )
{
case BMunM:
imageWideTwips= (int) ( ( TWIPS_PER_M* bd->bdPixelsWide )/
bd->bdXResolution );
imageHighTwips= (int) ( ( TWIPS_PER_M* bd->bdPixelsHigh )/
bd->bdYResolution );
break;
case BMunINCH:
imageWideTwips= (int)( ( 72* 20* bd->bdPixelsWide )/
bd->bdXResolution );
imageHighTwips= (int)( ( 72* 20* bd->bdPixelsHigh )/
bd->bdYResolution );
break;
case BMunPOINT:
imageWideTwips= (int)( ( 20* bd->bdPixelsWide )/
bd->bdXResolution );
imageHighTwips= (int)( ( 20* bd->bdPixelsHigh )/
bd->bdYResolution );
break;
case BMunPIXEL:
imageWideTwips= 20* bd->bdPixelsWide;
imageHighTwips= 20* bd->bdPixelsHigh;
break;
default:
LDEB(bd->bdUnit);
imageWideTwips= 20* bd->bdPixelsWide;
imageHighTwips= 20* bd->bdPixelsHigh;
break;
}
*pImageWideTwips= imageWideTwips;
*pImageHighTwips= imageHighTwips;
return;
}
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