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gtkradiant/tools/quake2/common/lbmlib.c
Timothee TTimo Besset 830125fad0 uncrustify! now the code is only ugly on the *inside*
2012-03-17 15:01:54 -05:00

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/*
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.
This file is part of GtkRadiant.
GtkRadiant is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
GtkRadiant is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
// lbmlib.c
#include "cmdlib.h"
#include "inout.h"
#include "lbmlib.h"
/*
============================================================================
LBM STUFF
============================================================================
*/
typedef unsigned char UBYTE;
//conflicts with windows typedef short WORD;
typedef unsigned short UWORD;
typedef long LONG;
typedef enum
{
ms_none,
ms_mask,
ms_transcolor,
ms_lasso
} mask_t;
typedef enum
{
cm_none,
cm_rle1
} compress_t;
typedef struct
{
UWORD w,h;
short x,y;
UBYTE nPlanes;
UBYTE masking;
UBYTE compression;
UBYTE pad1;
UWORD transparentColor;
UBYTE xAspect,yAspect;
short pageWidth,pageHeight;
} bmhd_t;
extern bmhd_t bmhd; // will be in native byte order
#define FORMID ( 'F' + ( 'O' << 8 ) + ( (int)'R' << 16 ) + ( (int)'M' << 24 ) )
#define ILBMID ( 'I' + ( 'L' << 8 ) + ( (int)'B' << 16 ) + ( (int)'M' << 24 ) )
#define PBMID ( 'P' + ( 'B' << 8 ) + ( (int)'M' << 16 ) + ( (int)' ' << 24 ) )
#define BMHDID ( 'B' + ( 'M' << 8 ) + ( (int)'H' << 16 ) + ( (int)'D' << 24 ) )
#define BODYID ( 'B' + ( 'O' << 8 ) + ( (int)'D' << 16 ) + ( (int)'Y' << 24 ) )
#define CMAPID ( 'C' + ( 'M' << 8 ) + ( (int)'A' << 16 ) + ( (int)'P' << 24 ) )
bmhd_t bmhd;
int Align( int l ){
if ( l & 1 ) {
return l + 1;
}
return l;
}
/*
================
LBMRLEdecompress
Source must be evenly aligned!
================
*/
byte *LBMRLEDecompress( byte *source,byte *unpacked, int bpwidth ){
int count;
byte b,rept;
count = 0;
do
{
rept = *source++;
if ( rept > 0x80 ) {
rept = ( rept ^ 0xff ) + 2;
b = *source++;
memset( unpacked,b,rept );
unpacked += rept;
}
else if ( rept < 0x80 ) {
rept++;
memcpy( unpacked,source,rept );
unpacked += rept;
source += rept;
}
else{
rept = 0; // rept of 0x80 is NOP
}
count += rept;
} while ( count < bpwidth );
if ( count > bpwidth ) {
Error( "Decompression exceeded width!\n" );
}
return source;
}
/*
=================
LoadLBM
=================
*/
void LoadLBM( char *filename, byte **picture, byte **palette ){
byte *LBMbuffer, *picbuffer, *cmapbuffer;
int y;
byte *LBM_P, *LBMEND_P;
byte *pic_p;
byte *body_p;
int formtype,formlength;
int chunktype,chunklength;
// qiet compiler warnings
picbuffer = NULL;
cmapbuffer = NULL;
//
// load the LBM
//
LoadFile( filename, (void **)&LBMbuffer );
//
// parse the LBM header
//
LBM_P = LBMbuffer;
if ( *(int *)LBMbuffer != LittleLong( FORMID ) ) {
Error( "No FORM ID at start of file!\n" );
}
LBM_P += 4;
formlength = BigLong( *(int *)LBM_P );
LBM_P += 4;
LBMEND_P = LBM_P + Align( formlength );
formtype = LittleLong( *(int *)LBM_P );
if ( formtype != ILBMID && formtype != PBMID ) {
Error( "Unrecognized form type: %c%c%c%c\n", formtype & 0xff
,( formtype >> 8 ) & 0xff,( formtype >> 16 ) & 0xff,( formtype >> 24 ) & 0xff );
}
LBM_P += 4;
//
// parse chunks
//
while ( LBM_P < LBMEND_P )
{
chunktype = LBM_P[0] + ( LBM_P[1] << 8 ) + ( LBM_P[2] << 16 ) + ( LBM_P[3] << 24 );
LBM_P += 4;
chunklength = LBM_P[3] + ( LBM_P[2] << 8 ) + ( LBM_P[1] << 16 ) + ( LBM_P[0] << 24 );
LBM_P += 4;
switch ( chunktype )
{
case BMHDID:
memcpy( &bmhd,LBM_P,sizeof( bmhd ) );
bmhd.w = BigShort( bmhd.w );
bmhd.h = BigShort( bmhd.h );
bmhd.x = BigShort( bmhd.x );
bmhd.y = BigShort( bmhd.y );
bmhd.pageWidth = BigShort( bmhd.pageWidth );
bmhd.pageHeight = BigShort( bmhd.pageHeight );
break;
case CMAPID:
cmapbuffer = malloc( 768 );
memset( cmapbuffer, 0, 768 );
memcpy( cmapbuffer, LBM_P, chunklength );
break;
case BODYID:
body_p = LBM_P;
pic_p = picbuffer = malloc( bmhd.w * bmhd.h );
if ( formtype == PBMID ) {
//
// unpack PBM
//
for ( y = 0 ; y < bmhd.h ; y++, pic_p += bmhd.w )
{
if ( bmhd.compression == cm_rle1 ) {
body_p = LBMRLEDecompress( (byte *)body_p
, pic_p, bmhd.w );
}
else if ( bmhd.compression == cm_none ) {
memcpy( pic_p,body_p,bmhd.w );
body_p += Align( bmhd.w );
}
}
}
else
{
//
// unpack ILBM
//
Error( "%s is an interlaced LBM, not packed", filename );
}
break;
}
LBM_P += Align( chunklength );
}
free( LBMbuffer );
*picture = picbuffer;
if ( palette ) {
*palette = cmapbuffer;
}
}
/*
============================================================================
WRITE LBM
============================================================================
*/
/*
==============
WriteLBMfile
==============
*/
void WriteLBMfile( char *filename, byte *data,
int width, int height, byte *palette ){
byte *lbm, *lbmptr;
int *formlength, *bmhdlength, *cmaplength, *bodylength;
int length;
bmhd_t basebmhd;
lbm = lbmptr = malloc( width * height + 1000 );
//
// start FORM
//
*lbmptr++ = 'F';
*lbmptr++ = 'O';
*lbmptr++ = 'R';
*lbmptr++ = 'M';
formlength = (int*)lbmptr;
lbmptr += 4; // leave space for length
*lbmptr++ = 'P';
*lbmptr++ = 'B';
*lbmptr++ = 'M';
*lbmptr++ = ' ';
//
// write BMHD
//
*lbmptr++ = 'B';
*lbmptr++ = 'M';
*lbmptr++ = 'H';
*lbmptr++ = 'D';
bmhdlength = (int *)lbmptr;
lbmptr += 4; // leave space for length
memset( &basebmhd,0,sizeof( basebmhd ) );
basebmhd.w = BigShort( (short)width );
basebmhd.h = BigShort( (short)height );
basebmhd.nPlanes = BigShort( 8 );
basebmhd.xAspect = BigShort( 5 );
basebmhd.yAspect = BigShort( 6 );
basebmhd.pageWidth = BigShort( (short)width );
basebmhd.pageHeight = BigShort( (short)height );
memcpy( lbmptr,&basebmhd,sizeof( basebmhd ) );
lbmptr += sizeof( basebmhd );
length = lbmptr - (byte *)bmhdlength - 4;
*bmhdlength = BigLong( length );
if ( length & 1 ) {
*lbmptr++ = 0; // pad chunk to even offset
}
//
// write CMAP
//
*lbmptr++ = 'C';
*lbmptr++ = 'M';
*lbmptr++ = 'A';
*lbmptr++ = 'P';
cmaplength = (int *)lbmptr;
lbmptr += 4; // leave space for length
memcpy( lbmptr,palette,768 );
lbmptr += 768;
length = lbmptr - (byte *)cmaplength - 4;
*cmaplength = BigLong( length );
if ( length & 1 ) {
*lbmptr++ = 0; // pad chunk to even offset
}
//
// write BODY
//
*lbmptr++ = 'B';
*lbmptr++ = 'O';
*lbmptr++ = 'D';
*lbmptr++ = 'Y';
bodylength = (int *)lbmptr;
lbmptr += 4; // leave space for length
memcpy( lbmptr,data,width * height );
lbmptr += width * height;
length = lbmptr - (byte *)bodylength - 4;
*bodylength = BigLong( length );
if ( length & 1 ) {
*lbmptr++ = 0; // pad chunk to even offset
}
//
// done
//
length = lbmptr - (byte *)formlength - 4;
*formlength = BigLong( length );
if ( length & 1 ) {
*lbmptr++ = 0; // pad chunk to even offset
}
//
// write output file
//
SaveFile( filename, lbm, lbmptr - lbm );
free( lbm );
}
/*
============================================================================
LOAD PCX
============================================================================
*/
typedef struct
{
char manufacturer;
char version;
char encoding;
char bits_per_pixel;
unsigned short xmin,ymin,xmax,ymax;
unsigned short hres,vres;
unsigned char palette[48];
char reserved;
char color_planes;
unsigned short bytes_per_line;
unsigned short palette_type;
char filler[58];
unsigned char data; // unbounded
} pcx_t;
/*
==============
LoadPCX
==============
*/
void LoadPCX( char *filename, byte **pic, byte **palette, int *width, int *height ){
byte *raw;
pcx_t *pcx;
int x, y;
int len;
int dataByte, runLength;
byte *out, *pix;
//
// load the file
//
len = LoadFile( filename, (void **)&raw );
//
// parse the PCX file
//
pcx = (pcx_t *)raw;
raw = &pcx->data;
pcx->xmin = LittleShort( pcx->xmin );
pcx->ymin = LittleShort( pcx->ymin );
pcx->xmax = LittleShort( pcx->xmax );
pcx->ymax = LittleShort( pcx->ymax );
pcx->hres = LittleShort( pcx->hres );
pcx->vres = LittleShort( pcx->vres );
pcx->bytes_per_line = LittleShort( pcx->bytes_per_line );
pcx->palette_type = LittleShort( pcx->palette_type );
if ( pcx->manufacturer != 0x0a
|| pcx->version != 5
|| pcx->encoding != 1
|| pcx->bits_per_pixel != 8
|| pcx->xmax >= 640
|| pcx->ymax >= 480 ) {
Error( "Bad pcx file %s", filename );
}
if ( palette ) {
*palette = malloc( 768 );
memcpy( *palette, (byte *)pcx + len - 768, 768 );
}
if ( width ) {
*width = pcx->xmax + 1;
}
if ( height ) {
*height = pcx->ymax + 1;
}
if ( !pic ) {
return;
}
out = malloc( ( pcx->ymax + 1 ) * ( pcx->xmax + 1 ) );
if ( !out ) {
Error( "Skin_Cache: couldn't allocate" );
}
*pic = out;
pix = out;
for ( y = 0 ; y <= pcx->ymax ; y++, pix += pcx->xmax + 1 )
{
for ( x = 0 ; x <= pcx->xmax ; )
{
dataByte = *raw++;
if ( ( dataByte & 0xC0 ) == 0xC0 ) {
runLength = dataByte & 0x3F;
dataByte = *raw++;
}
else{
runLength = 1;
}
while ( runLength-- > 0 )
pix[x++] = dataByte;
}
}
if ( raw - (byte *)pcx > len ) {
Error( "PCX file %s was malformed", filename );
}
free( pcx );
}
/*
==============
WritePCXfile
==============
*/
void WritePCXfile( char *filename, byte *data,
int width, int height, byte *palette ){
int i, j, length;
pcx_t *pcx;
byte *pack;
pcx = malloc( width * height * 2 + 1000 );
memset( pcx, 0, sizeof( *pcx ) );
pcx->manufacturer = 0x0a; // PCX id
pcx->version = 5; // 256 color
pcx->encoding = 1; // uncompressed
pcx->bits_per_pixel = 8; // 256 color
pcx->xmin = 0;
pcx->ymin = 0;
pcx->xmax = LittleShort( (short)( width - 1 ) );
pcx->ymax = LittleShort( (short)( height - 1 ) );
pcx->hres = LittleShort( (short)width );
pcx->vres = LittleShort( (short)height );
pcx->color_planes = 1; // chunky image
pcx->bytes_per_line = LittleShort( (short)width );
pcx->palette_type = LittleShort( 2 ); // not a grey scale
// pack the image
pack = &pcx->data;
for ( i = 0 ; i < height ; i++ )
{
for ( j = 0 ; j < width ; j++ )
{
if ( ( *data & 0xc0 ) != 0xc0 ) {
*pack++ = *data++;
}
else
{
*pack++ = 0xc1;
*pack++ = *data++;
}
}
}
// write the palette
*pack++ = 0x0c; // palette ID byte
for ( i = 0 ; i < 768 ; i++ )
*pack++ = *palette++;
// write output file
length = pack - (byte *)pcx;
SaveFile( filename, pcx, length );
free( pcx );
}
/*
============================================================================
LOAD IMAGE
============================================================================
*/
/*
==============
Load256Image
Will load either an lbm or pcx, depending on extension.
Any of the return pointers can be NULL if you don't want them.
==============
*/
void Load256Image( char *name, byte **pixels, byte **palette,
int *width, int *height ){
char ext[128];
ExtractFileExtension( name, ext );
if ( !Q_strncasecmp( ext, "lbm", strlen( ext ) ) ) {
LoadLBM( name, pixels, palette );
if ( width ) {
*width = bmhd.w;
}
if ( height ) {
*height = bmhd.h;
}
}
else if ( !Q_strncasecmp( ext, "pcx",strlen( ext ) ) ) {
LoadPCX( name, pixels, palette, width, height );
}
else{
Error( "%s doesn't have a known image extension", name );
}
}
/*
==============
Save256Image
Will save either an lbm or pcx, depending on extension.
==============
*/
void Save256Image( char *name, byte *pixels, byte *palette,
int width, int height ){
char ext[128];
ExtractFileExtension( name, ext );
if ( !Q_strncasecmp( ext, "lbm",strlen( ext ) ) ) {
WriteLBMfile( name, pixels, width, height, palette );
}
else if ( !Q_strncasecmp( ext, "pcx",strlen( ext ) ) ) {
WritePCXfile( name, pixels, width, height, palette );
}
else{
Error( "%s doesn't have a known image extension", name );
}
}
/*
============================================================================
TARGA IMAGE
============================================================================
*/
typedef struct _TargaHeader {
unsigned char id_length, colormap_type, image_type;
unsigned short colormap_index, colormap_length;
unsigned char colormap_size;
unsigned short x_origin, y_origin, width, height;
unsigned char pixel_size, attributes;
} TargaHeader;
int fgetLittleShort( FILE *f ){
byte b1, b2;
b1 = fgetc( f );
b2 = fgetc( f );
return (short)( b1 + b2 * 256 );
}
int fgetLittleLong( FILE *f ){
byte b1, b2, b3, b4;
b1 = fgetc( f );
b2 = fgetc( f );
b3 = fgetc( f );
b4 = fgetc( f );
return b1 + ( b2 << 8 ) + ( b3 << 16 ) + ( b4 << 24 );
}
/*
=============
LoadTGA
=============
*/
void LoadTGA( char *name, byte **pixels, int *width, int *height ){
int columns, rows, numPixels;
byte *pixbuf;
int row, column;
FILE *fin;
byte *targa_rgba;
TargaHeader targa_header;
fin = fopen( name, "rb" );
if ( !fin ) {
Error( "Couldn't read %s", name );
}
targa_header.id_length = fgetc( fin );
targa_header.colormap_type = fgetc( fin );
targa_header.image_type = fgetc( fin );
targa_header.colormap_index = fgetLittleShort( fin );
targa_header.colormap_length = fgetLittleShort( fin );
targa_header.colormap_size = fgetc( fin );
targa_header.x_origin = fgetLittleShort( fin );
targa_header.y_origin = fgetLittleShort( fin );
targa_header.width = fgetLittleShort( fin );
targa_header.height = fgetLittleShort( fin );
targa_header.pixel_size = fgetc( fin );
targa_header.attributes = fgetc( fin );
if ( targa_header.image_type != 2
&& targa_header.image_type != 10 ) {
Error( "LoadTGA: Only type 2 and 10 targa RGB images supported\n" );
}
if ( targa_header.colormap_type != 0
|| ( targa_header.pixel_size != 32 && targa_header.pixel_size != 24 ) ) {
Error( "Texture_LoadTGA: Only 32 or 24 bit images supported (no colormaps)\n" );
}
columns = targa_header.width;
rows = targa_header.height;
numPixels = columns * rows;
if ( width ) {
*width = columns;
}
if ( height ) {
*height = rows;
}
targa_rgba = malloc( numPixels * 4 );
*pixels = targa_rgba;
if ( targa_header.id_length != 0 ) {
fseek( fin, targa_header.id_length, SEEK_CUR ); // skip TARGA image comment
}
if ( targa_header.image_type == 2 ) { // Uncompressed, RGB images
for ( row = rows - 1; row >= 0; row-- ) {
pixbuf = targa_rgba + row * columns * 4;
for ( column = 0; column < columns; column++ ) {
unsigned char red,green,blue,alphabyte;
switch ( targa_header.pixel_size ) {
case 24:
blue = getc( fin );
green = getc( fin );
red = getc( fin );
*pixbuf++ = red;
*pixbuf++ = green;
*pixbuf++ = blue;
*pixbuf++ = 255;
break;
case 32:
blue = getc( fin );
green = getc( fin );
red = getc( fin );
alphabyte = getc( fin );
*pixbuf++ = red;
*pixbuf++ = green;
*pixbuf++ = blue;
*pixbuf++ = alphabyte;
break;
}
}
}
}
else if ( targa_header.image_type == 10 ) { // Runlength encoded RGB images
unsigned char red,green,blue,alphabyte,packetHeader,packetSize,j;
for ( row = rows - 1; row >= 0; row-- ) {
pixbuf = targa_rgba + row * columns * 4;
for ( column = 0; column < columns; ) {
packetHeader = getc( fin );
packetSize = 1 + ( packetHeader & 0x7f );
if ( packetHeader & 0x80 ) { // run-length packet
switch ( targa_header.pixel_size ) {
case 24:
blue = getc( fin );
green = getc( fin );
red = getc( fin );
alphabyte = 255;
break;
case 32:
blue = getc( fin );
green = getc( fin );
red = getc( fin );
alphabyte = getc( fin );
break;
}
for ( j = 0; j < packetSize; j++ ) {
*pixbuf++ = red;
*pixbuf++ = green;
*pixbuf++ = blue;
*pixbuf++ = alphabyte;
column++;
if ( column == columns ) { // run spans across rows
column = 0;
if ( row > 0 ) {
row--;
}
else{
goto breakOut;
}
pixbuf = targa_rgba + row * columns * 4;
}
}
}
else { // non run-length packet
for ( j = 0; j < packetSize; j++ ) {
switch ( targa_header.pixel_size ) {
case 24:
blue = getc( fin );
green = getc( fin );
red = getc( fin );
*pixbuf++ = red;
*pixbuf++ = green;
*pixbuf++ = blue;
*pixbuf++ = 255;
break;
case 32:
blue = getc( fin );
green = getc( fin );
red = getc( fin );
alphabyte = getc( fin );
*pixbuf++ = red;
*pixbuf++ = green;
*pixbuf++ = blue;
*pixbuf++ = alphabyte;
break;
}
column++;
if ( column == columns ) { // pixel packet run spans across rows
column = 0;
if ( row > 0 ) {
row--;
}
else{
goto breakOut;
}
pixbuf = targa_rgba + row * columns * 4;
}
}
}
}
breakOut:;
}
}
// vertically flipped
if ( ( targa_header.attributes & ( 1 << 5 ) ) ) {
int flip;
for ( row = 0; row < .5f * rows; row++ )
{
for ( column = 0; column < columns; column++ )
{
flip = *( (int*)targa_rgba + row * columns + column );
*( (int*)targa_rgba + row * columns + column ) = *( (int*)targa_rgba + ( ( rows - 1 ) - row ) * columns + column );
*( (int*)targa_rgba + ( ( rows - 1 ) - row ) * columns + column ) = flip;
}
}
}
fclose( fin );
}
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