mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-27 06:34:11 +00:00
6d5ffa9f8e
There's still some cleanup to do, but everything seems to be working nicely: `make -j` works, `make distcheck` passes. There is probably plenty of bitrot in the package directories (RPM, debian), though. The vc project files have been removed since those versions are way out of date and quakeforge is pretty much dependent on gcc now anyway. Most of the old Makefile.am files are now Makemodule.am. This should allow for new Makefile.am files that allow local building (to be added on an as-needed bases). The current remaining Makefile.am files are for standalone sub-projects.a The installable bins are currently built in the top-level build directory. This may change if the clutter gets to be too much. While this does make a noticeable difference in build times, the main reason for the switch was to take care of the growing dependency issues: now it's possible to build tools for code generation (eg, using qfcc and ruamoko programs for code-gen).
560 lines
12 KiB
C
560 lines
12 KiB
C
/* Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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See file, 'COPYING', for details.
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*/
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// lbmlib.c
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "QF/qendian.h"
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#include "QF/quakeio.h"
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#include "QF/sys.h"
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#include "tools/qfmodelgen/include/lbmlib.h"
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static int
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LoadFile (const char *fname, byte **buf)
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{
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QFile *file;
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byte *src;
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int len;
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*buf = 0;
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file = Qopen (fname, "rt");
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if (!file)
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return 0;
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len = Qfilesize (file);
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src = malloc (len + 1);
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src[Qfilesize (file)] = 0;
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Qread (file, src, len);
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Qclose (file);
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*buf = src;
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return len;
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}
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static QFile *
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SafeOpenWrite (const char *filename)
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{
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QFile *f;
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f = Qopen(filename, "wb");
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if (!f)
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Sys_Error ("Error opening %s: %s",filename,strerror(errno));
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return f;
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}
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static void
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SafeWrite (QFile *f, void *buffer, int count)
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{
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if (Qwrite (f, buffer, count) != count)
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Sys_Error ("File read failure");
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}
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static void
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SaveFile (const char *filename, void *buffer, int count)
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{
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QFile *f;
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f = SafeOpenWrite (filename);
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SafeWrite (f, buffer, count);
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Qclose (f);
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}
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/*
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============================================================================
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LBM STUFF
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============================================================================
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*/
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#define FORMID ('F'+('O'<<8)+((int)'R'<<16)+((int)'M'<<24))
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#define ILBMID ('I'+('L'<<8)+((int)'B'<<16)+((int)'M'<<24))
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#define PBMID ('P'+('B'<<8)+((int)'M'<<16)+((int)' '<<24))
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#define BMHDID ('B'+('M'<<8)+((int)'H'<<16)+((int)'D'<<24))
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#define BODYID ('B'+('O'<<8)+((int)'D'<<16)+((int)'Y'<<24))
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#define CMAPID ('C'+('M'<<8)+((int)'A'<<16)+((int)'P'<<24))
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bmhd_t bmhd;
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static int
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Align (int l)
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{
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if (l&1)
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return l+1;
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return l;
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}
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/*
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================
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LBMRLEdecompress
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Source must be evenly aligned!
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================
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*/
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static byte *
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LBMRLEDecompress (byte *source, byte *unpacked, int bpwidth)
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{
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int count;
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byte b, rept;
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count = 0;
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do {
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rept = *source++;
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if (rept > 0x80) {
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rept = (rept ^ 0xff) + 2;
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b = *source++;
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memset (unpacked, b, rept);
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unpacked += rept;
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} else if (rept < 0x80) {
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rept++;
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memcpy (unpacked, source, rept);
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unpacked += rept;
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source += rept;
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} else
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rept = 0; // rept of 0x80 is NOP
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count += rept;
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} while (count < bpwidth);
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if (count > bpwidth)
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Sys_Error ("Decompression exceeded width!\n");
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return source;
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}
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#define BPLANESIZE 128
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byte bitplanes[9][BPLANESIZE]; // max size 1024 by 9 bit planes
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/*
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=================
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MungeBitPlanes8
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Asm version destroys the bit plane data!
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=================
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*/
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static void
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MungeBitPlanes8 (int width, byte *dest)
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{
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int i, ind = 0;
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while (width--) {
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for (i = 0; i < 8; i++) {
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*dest++ = (((bitplanes[7][ind] << i) & 128) >> 0)
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| (((bitplanes[6][ind] << i) & 128) >> 1)
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| (((bitplanes[5][ind] << i) & 128) >> 2)
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| (((bitplanes[4][ind] << i) & 128) >> 3)
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| (((bitplanes[3][ind] << i) & 128) >> 4)
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| (((bitplanes[2][ind] << i) & 128) >> 5)
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| (((bitplanes[1][ind] << i) & 128) >> 6)
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| (((bitplanes[0][ind] << i) & 128) >> 7);
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}
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ind++;
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}
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#if 0
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asm les di,[dest]
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asm mov si,-1
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asm mov cx,[width]
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mungebyte:
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asm inc si
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asm mov dx,8
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mungebit:
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asm shl [BYTE PTR bitplanes + BPLANESIZE*7 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*6 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*5 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*4 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*3 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*2 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*1 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*0 +si],1
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asm rcl al,1
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asm stosb
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asm dec cx
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asm jz done
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asm dec dx
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asm jnz mungebit
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asm jmp mungebyte
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done:
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#endif
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}
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static void
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MungeBitPlanes4 (int width, byte *dest)
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{
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int i, ind = 0;
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while (width--) {
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for (i = 0; i < 8; i++) {
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*dest++ = (((bitplanes[3][ind] << i) & 128) >> 4)
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| (((bitplanes[2][ind] << i) & 128) >> 5)
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| (((bitplanes[1][ind] << i) & 128) >> 6)
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| (((bitplanes[0][ind] << i) & 128) >> 7);
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}
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ind++;
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}
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#if 0
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asm les di,[dest]
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asm mov si,-1
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asm mov cx,[width]
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mungebyte:
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asm inc si
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asm mov dx,8
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mungebit:
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asm xor al,al
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asm shl [BYTE PTR bitplanes + BPLANESIZE*3 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*2 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*1 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*0 +si],1
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asm rcl al,1
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asm stosb
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asm dec cx
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asm jz done
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asm dec dx
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asm jnz mungebit
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asm jmp mungebyte
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done:
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#endif
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}
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static void
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MungeBitPlanes2 (int width, byte *dest)
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{
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int i, ind = 0;
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while (width--) {
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for (i = 0; i < 8; i++) {
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*dest++ = (((bitplanes[1][ind] << i) & 128) >> 6)
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| (((bitplanes[0][ind] << i) & 128) >> 7);
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}
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ind++;
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}
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#if 0
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asm les di,[dest]
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asm mov si,-1
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asm mov cx,[width]
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mungebyte:
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asm inc si
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asm mov dx,8
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mungebit:
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asm xor al,al
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asm shl [BYTE PTR bitplanes + BPLANESIZE*1 +si],1
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asm rcl al,1
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asm shl [BYTE PTR bitplanes + BPLANESIZE*0 +si],1
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asm rcl al,1
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asm stosb
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asm dec cx
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asm jz done
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asm dec dx
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asm jnz mungebit
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asm jmp mungebyte
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done:
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#endif
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}
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static void
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MungeBitPlanes1 (int width, byte *dest)
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{
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int i, ind = 0;
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while (width--) {
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for (i = 0; i < 8; i++) {
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*dest++ = (((bitplanes[0][ind] << i) & 128) >> 7);
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}
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ind++;
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}
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#if 0
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asm les di,[dest]
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asm mov si,-1
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asm mov cx,[width]
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mungebyte:
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asm inc si
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asm mov dx,8
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mungebit:
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asm xor al,al
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asm shl [BYTE PTR bitplanes + BPLANESIZE*0 +si],1
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asm rcl al,1
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asm stosb
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asm dec cx
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asm jz done
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asm dec dx
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asm jnz mungebit
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asm jmp mungebyte
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done:
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#endif
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}
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void
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LoadLBM (char *filename, byte **picture, byte **palette)
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{
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byte *LBMbuffer, *picbuffer, *cmapbuffer;
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byte *LBM_P, *LBMEND_P;
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byte *pic_p;
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byte *body_p;
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unsigned rowsize;
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int y, p, planes;
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int formtype, formlength;
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int chunktype, chunklength;
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void (*mungecall) (int, byte *);
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// quiet compiler warnings
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picbuffer = NULL;
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cmapbuffer = NULL;
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mungecall = NULL;
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// load the LBM
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LoadFile (filename, &LBMbuffer);
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// parse the LBM header
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LBM_P = LBMbuffer;
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if (*(uint32_t *) LBMbuffer != LittleLong (FORMID))
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Sys_Error ("No FORM ID at start of file!\n");
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LBM_P += 4;
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formlength = BigLong (*(uint32_t *) LBM_P );
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LBM_P += 4;
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LBMEND_P = LBM_P + Align (formlength);
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formtype = LittleLong (*(uint32_t *) LBM_P);
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if (formtype != ILBMID && formtype != PBMID)
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Sys_Error ("Unrecognized form type: %c%c%c%c\n", formtype & 0xff,
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(formtype >> 8) & 0xff, (formtype >> 16) & 0xff,
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(formtype >> 24) & 0xff);
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LBM_P += 4;
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// parse chunks
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while (LBM_P < LBMEND_P) {
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chunktype = LBM_P[0] + (LBM_P[1] << 8) + (LBM_P[2] << 16)
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+ (LBM_P[3] << 24);
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LBM_P += 4;
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chunklength = LBM_P[3] + (LBM_P[2] << 8) + (LBM_P[1] << 16)
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+ (LBM_P[0] << 24);
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LBM_P += 4;
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switch (chunktype) {
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case BMHDID:
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memcpy (&bmhd, LBM_P, sizeof (bmhd));
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bmhd.w = BigShort (bmhd.w);
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bmhd.h = BigShort (bmhd.h);
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bmhd.x = BigShort (bmhd.x);
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bmhd.y = BigShort (bmhd.y);
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bmhd.pageWidth = BigShort (bmhd.pageWidth);
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bmhd.pageHeight = BigShort (bmhd.pageHeight);
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break;
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case CMAPID:
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cmapbuffer = malloc (768);
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memset (cmapbuffer, 0, 768);
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memcpy (cmapbuffer, LBM_P, chunklength);
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break;
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case BODYID:
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body_p = LBM_P;
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pic_p = picbuffer = malloc (bmhd.w * bmhd.h);
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if (formtype == PBMID) {
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// unpack PBM
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for (y = 0; y < bmhd.h; y++, pic_p += bmhd.w) {
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if (bmhd.compression == cm_rle1)
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body_p = LBMRLEDecompress ((byte *) body_p , pic_p,
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bmhd.w);
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else if (bmhd.compression == cm_none) {
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memcpy (pic_p,body_p,bmhd.w);
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body_p += Align(bmhd.w);
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}
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}
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} else {
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// unpack ILBM
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planes = bmhd.nPlanes;
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if (bmhd.masking == ms_mask)
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planes++;
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rowsize = (bmhd.w + 15) / 16 * 2;
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switch (bmhd.nPlanes) {
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case 1:
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mungecall = MungeBitPlanes1;
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break;
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case 2:
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mungecall = MungeBitPlanes2;
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break;
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case 4:
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mungecall = MungeBitPlanes4;
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break;
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case 8:
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mungecall = MungeBitPlanes8;
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break;
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default:
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Sys_Error ("Can't munge %i bit planes!\n",bmhd.nPlanes);
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}
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for (y = 0; y < bmhd.h; y++, pic_p += bmhd.w) {
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for (p = 0; p < planes; p++)
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if (bmhd.compression == cm_rle1)
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body_p = LBMRLEDecompress ((byte *) body_p,
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bitplanes[p], rowsize);
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else if (bmhd.compression == cm_none) {
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memcpy (bitplanes[p], body_p, rowsize);
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body_p += rowsize;
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}
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mungecall (bmhd.w , pic_p);
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}
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}
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break;
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}
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LBM_P += Align (chunklength);
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}
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free (LBMbuffer);
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*picture = picbuffer;
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*palette = cmapbuffer;
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}
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/*
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============================================================================
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WRITE LBM
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============================================================================
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*/
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void
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WriteLBMfile (char *filename, byte *data, int width, int height, byte *palette)
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{
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byte *lbm, *lbmptr;
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uint32_t *formlength, *bmhdlength, *cmaplength, *bodylength;
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int length;
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bmhd_t basebmhd;
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lbm = lbmptr = malloc (width*height+1000);
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// start FORM
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*lbmptr++ = 'F';
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*lbmptr++ = 'O';
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*lbmptr++ = 'R';
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*lbmptr++ = 'M';
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formlength = (uint32_t*)lbmptr;
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lbmptr+=4; // leave space for length
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*lbmptr++ = 'P';
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*lbmptr++ = 'B';
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*lbmptr++ = 'M';
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*lbmptr++ = ' ';
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// write BMHD
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*lbmptr++ = 'B';
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*lbmptr++ = 'M';
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*lbmptr++ = 'H';
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*lbmptr++ = 'D';
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bmhdlength = (uint32_t *) lbmptr;
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lbmptr += 4; // leave space for length
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memset (&basebmhd, 0, sizeof (basebmhd));
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basebmhd.w = BigShort ((short) width);
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basebmhd.h = BigShort ((short) height);
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basebmhd.nPlanes = 8;
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basebmhd.xAspect = 5;
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basebmhd.yAspect = 6;
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basebmhd.pageWidth = BigShort ((short) width);
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basebmhd.pageHeight = BigShort ((short) height);
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memcpy (lbmptr, &basebmhd, sizeof (basebmhd));
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lbmptr += sizeof (basebmhd);
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length = lbmptr - (byte *) bmhdlength - 4;
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*bmhdlength = BigLong (length);
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if (length & 1)
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*lbmptr++ = 0; // pad chunk to even offset
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// write CMAP
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*lbmptr++ = 'C';
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*lbmptr++ = 'M';
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*lbmptr++ = 'A';
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*lbmptr++ = 'P';
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cmaplength = (uint32_t *) lbmptr;
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lbmptr += 4; // leave space for length
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memcpy (lbmptr, palette, 768);
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lbmptr += 768;
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length = lbmptr - (byte *) cmaplength - 4;
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*cmaplength = BigLong (length);
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if (length & 1)
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*lbmptr++ = 0; // pad chunk to even offset
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// write BODY
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*lbmptr++ = 'B';
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*lbmptr++ = 'O';
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*lbmptr++ = 'D';
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*lbmptr++ = 'Y';
|
|
|
|
bodylength = (uint32_t *) 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);
|
|
}
|
|
|