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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bitmap.h"
#include "../error.h"
#define BMP 1
#define TGA 2
#define PNG 3
#define TGAPACKED 4
extern char * strcat( char * dest,const char * src );
int conv24to32( txSample * bf )
{
unsigned char * tmpImage;
int i,c;
if ( bf->BPP == 24 )
{
tmpImage=bf->Image;
bf->ImageSize=bf->Width * bf->Height * 4;
bf->BPP=32;
if ( ( bf->Image=malloc( bf->ImageSize ) ) == NULL )
{
#ifdef DEBUG
dbprintf( 4,"[bitmap] Not enough memory for image.\n" );
#endif
return 1;
}
memset( bf->Image,0,bf->ImageSize );
for ( c=0,i=0;i < bf->Width * bf->Height * 3; )
{
bf->Image[c++]=tmpImage[i++];
bf->Image[c++]=tmpImage[i++];
bf->Image[c++]=tmpImage[i++]; c++;
}
free( tmpImage );
}
return 0;
}
void bgr2rgb( txSample * bf )
{
unsigned char c;
int i;
for ( i=0;i < bf->ImageSize;i+=4 )
{
c=bf->Image[i];
bf->Image[i]=bf->Image[i+2];
bf->Image[i+2]=c;
}
}
void Normalize( txSample * bf )
{
int i;
for ( i=0;i < bf->ImageSize;i+=4 ) bf->Image[i+3]=0;
}
unsigned char tmp[512];
unsigned char * fExist( unsigned char * fname )
{
FILE * fl;
unsigned char ext[][6] = { ".tga\0",".TGA\0",".png\0",".PNG\0",".bmp\0",".BMP\0" };
int i;
fl=fopen( fname,"rb" );
if ( fl != NULL )
{
fclose( fl );
return fname;
}
for ( i=0;i<10;i++ )
{
strcpy( tmp,fname );
strcat( tmp,ext[i] );
fl=fopen( tmp,"rb" );
if ( fl != NULL )
{
fclose( fl );
return tmp;
}
}
return NULL;
}
int aComp( unsigned char * b1,unsigned char * b2,int size )
{
int i;
for( i=0;i<size;i++ ) if ( b1[i] != b2[i] ) return 0;
return 1;
}
int GetFileType( char * fname )
{
FILE * fl;
unsigned char buffer[10];
unsigned char bmp[2] = { 0x42,0x4d };
unsigned char tga[7] = { 0x00,0x02,0x00,0x00,0x00,0x00,0x00 };
unsigned char ptga[7] = { 0x00,0x0a,0x00,0x00,0x00,0x00,0x00 };
unsigned char png[8] = { 0x89,0x50,0x4e,0x47,0x0d,0x0a,0x1a,0x0a };
if ( ( fl=fopen( fname,"rb" ) ) == NULL ) return -1;
fread( buffer,1,10,fl );
fclose( fl );
if ( aComp( buffer,bmp,2 ) ) return BMP; // --- bmp
if ( aComp( &buffer[1],tga,8 ) ) return TGA; // --- tga
if ( aComp( &buffer[1],ptga,7 ) ) return TGAPACKED; // --- tga
if ( aComp( buffer,png,8 ) ) return PNG; // --- png
return 0; // --- others
}
int bpRead( char * fname, txSample * bf )
{
int bgr = 0;
int i;
fname=fExist( fname );
if ( fname == NULL ) return -2;
switch ( GetFileType( fname ) )
{
case BMP:
i=bmpRead( fname,bf );
switch ( i )
{
case 0: break;
case 3: return -1;
default: return -3;
}
break;
case TGA:
i=tgaRead( fname,bf );
switch ( i )
{
case 0: break;
case 3: return -1;
default: return -4;
}
break;
case PNG:
if ( pngRead( fname,bf ) ) return -5;
bgr=1;
break;
case TGAPACKED:
#ifdef DEBUG
dbprintf( 4,"[bitmap] sorry, packed TGA not supported.\n" );
#endif
return -6;
default:
{
#ifdef DEBUG
dbprintf( 4,"[bitmap] Unknown file type ( %s ).\n",fname );
#endif
return -7;
}
}
if ( bf->BPP < 24 )
{
#ifdef DEBUG
dbprintf( 4,"[bitmap] sorry, 16 or less bitmaps not supported.\n" );
#endif
return -1;
}
if ( conv24to32( bf ) ) return -8;
if ( bgr ) bgr2rgb( bf );
Normalize( bf );
return 0;
}
void Convert32to1( txSample * in,txSample * out,int adaptivlimit )
{
out->Width=in->Width;
out->Height=in->Height;
out->BPP=1;
out->ImageSize=out->Width * out->Height / 8;
dbprintf( 4,"[c1to32] imagesize: %d\n",out->ImageSize );
out->Image=(char *)calloc( 1,out->ImageSize );
if ( out->Image == NULL ) dbprintf( 4,"nem van ram baze\n" );
{
int i,b,c=0; unsigned long * buf = NULL; unsigned char tmp = 0; int nothaveshape = 1;
buf=(unsigned long *)in->Image;
for ( b=0,i=0;i < out->Width * out->Height;i++ )
{
if ( buf[i] != adaptivlimit ) tmp=( tmp >> 1 )|128;
else { tmp=tmp >> 1; buf[i]=nothaveshape=0; }
if ( b++ == 7 ) { out->Image[c++]=tmp; tmp=b=0; }
}
if ( b ) out->Image[c]=tmp;
if ( nothaveshape ) { free( out->Image ); out->Image=NULL; }
}
}
void Convert1to32( txSample * in,txSample * out )
{
if ( in->Image == NULL ) return;
out->Width=in->Width;
out->Height=in->Height;
out->BPP=32;
out->ImageSize=out->Width * out->Height * 4;
out->Image=(char *)calloc( 1,out->ImageSize );
dbprintf( 4,"[c32to1] imagesize: %d\n",out->ImageSize );
if ( out->Image == NULL ) dbprintf( 4,"nem van ram baze\n" );
{
int i,b,c=0; unsigned long * buf = NULL; unsigned char tmp = 0;
buf=(unsigned long *)out->Image;
for ( c=0,i=0;i < in->Width * in->Height / 8;i++ )
{
tmp=in->Image[i];
for ( b=0;b<8;b++ )
{
buf[c]=0;
if ( tmp&0x1 ) buf[c]=0xffffffff;
c++; tmp=tmp>>1;
}
}
}
}
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