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Megahits 5
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Megahits 5 (1994)(GTI - Rhein-Main-Soft)(DE)(Disc 2 of 2)[!].iso
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conv
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iffconvert.lha
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IFFConvert
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src
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iffpack.c
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C/C++ Source or Header
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1993-04-20
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15KB
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567 lines
#include <intuition/intuition.h>
#include <proto/intuition.h>
#include <graphics/gfx.h>
#include <graphics/gfxbase.h>
#include <proto/graphics.h>
#include <stdio.h>
#include "iffpack.h"
#define BADFLAGS (SPRITES|VP_HIDE|GENLOCK_AUDIO|GENLOCK_VIDEO)
#define FLAGMASK (~BADFLAGS)
#define CAMGMASK (FLAGMASK & 0xffffL)
#define ID(a,b,c,d) ((((a)<<8|(b))<<8|(c))<<8|(d))
void SetRGB32( struct ViewPort *, ULONG, ULONG, ULONG, ULONG );
void GetRGB32( struct ColorMap *, ULONG, ULONG, ULONG *);
#pragma libcall GfxBase SetRGB32 354 3210805
#pragma libcall GfxBase GetRGB32 384 910804
extern struct GfxBase *GfxBase;
struct BMHD {
ULONG Size;
USHORT Width,Height;
SHORT LeftEdge,TopEdge;
UBYTE Depth;
UBYTE Mask;
UBYTE Compression;
UBYTE Pad;
USHORT Transparent;
UBYTE XAspect,YAspect;
SHORT ScrWidth,ScrHeight;
};
static int buf[256];
static short count,runlen,ptr;
static short rows,bytes,depth;
static cmode;
static short TempY=0,TempX=0;
static struct BitMap MyBm;
static struct RastPort MyRast;
static short anzcolors;
/* static ULONG colors[256]; */
static UBYTE red[256],green[256],blue[256];
/* Prototypes */
static ReadHeader(FILE *fp,struct BMHD *bmhd,USHORT *viewmode);
static ReadBMHD(FILE *fp,struct BMHD *bmhd,USHORT *vmode);
static ReadCMAP(FILE *fp);
static ReadCAMG(FILE *fp,USHORT *vmode);
static WriteBMHD(struct Window *w,FILE *fp,short mode);
static WriteCMAP(struct Screen *s,FILE *fp,int);
static WriteCAMG(struct Screen *s,FILE *fp);
static WriteBODY(struct Window *w,FILE *fp,short mode);
static compline(FILE *fp,short bytes,short y,short p);
static comprow(FILE *fp,short rows,short x,short p);
static initcomp(short width,short height,short depth,short mode);
static compget(FILE *fp);
#define RED(c) (((c)>>16)&0xff)
#define BLUE(c) (((c)>>8)&0xff)
#define GREEN(c) ((c)&0xff)
#define COLOR32(c) ((c)|((c)<<8)|((c)<<16)|((c)<<24))
void SetColors(struct ViewPort *vp)
{
short a;
if(GfxBase->LibNode.lib_Version<39) {
for(a=0;a<anzcolors;a++) {
SetRGB4(vp,a,red[a]>>4,green[a]>>4,blue[a]>>4);
}
} else {
for(a=0;a<anzcolors;a++) {
SetRGB32(vp,a,COLOR32(red[a]),COLOR32(green[a]),COLOR32(blue[a]));
}
}
}
ReadPicSize(FILE *fp,SHORT *winx,SHORT *winy,SHORT *scrx,SHORT *scry,SHORT *depth,USHORT *vmode)
{
struct BMHD bmhd;
int err;
if(err=ReadHeader(fp,&bmhd,vmode)) return(err);
*winx=bmhd.Width;
*winy=bmhd.Height;
*scrx=bmhd.ScrWidth;
*scry=bmhd.ScrHeight;
*depth=bmhd.Depth;
return(0);
}
ReadBody(struct RastPort *rp,FILE *fp)
{
long size;
short x,y,p;
int c;
if(!fread(&size,4,1,fp)) return(BAD_IFF);
if(cmode==0) {
for(y=0;y<rows;y++) {
for(p=0;p<depth;p++) {
for(x=0;x<bytes;x++) {
if((c=getc(fp))==EOF) return(BAD_IFF);
MyBm.Planes[p][x]=c;
}
}
ClipBlit(&MyRast,0L,0L,rp,0L,(long)y,(long)TempX,1L,192L);
WaitBlit();
}
} else if(cmode==1) {
for(y=0;y<rows;y++) {
for(p=0;p<depth;p++) {
for(x=0;x<bytes;x++) {
if((c=compget(fp))==EOF) return(BAD_IFF);
if(c<256) {
MyBm.Planes[p][x]=c;
}
}
}
ClipBlit(&MyRast,0L,0L,rp,0L,(long)y,(long)TempX,1L,192L);
WaitBlit();
}
} else if(cmode==2) {
for(x=0;x<bytes;x++) {
for(p=0;p<depth;p++) {
for(y=0;y<rows;y++) {
if((c=compget(fp))==EOF) return(BAD_IFF);
if(c<256) {
MyBm.Planes[p][y<<1]=c;
}
}
}
ClipBlit(&MyRast,0L,0L,rp,(long)(x<<3),0L,8L,(long)TempY,192L);
WaitBlit();
}
}
IFFCleanup();
return(0);
}
WriteWindow(FILE *fp,struct Window *w,int mode,int LastColors)
{
if(mode<0 || mode>2) return(UNKNOWN_COMPRESSION);
if(WriteBMHD(w,fp,mode)) return(WRITE_ERROR);
if(WriteCMAP(w->WScreen,fp,LastColors)) return(WRITE_ERROR);
if(WriteCAMG(w->WScreen,fp)) return(WRITE_ERROR);
if(initcomp((short)w->Width,(short)w->Height,(short)w->WScreen->BitMap.Depth,
mode)) return(NO_MEMORY);
if(WriteBODY(w,fp,mode)) return(WRITE_ERROR);
IFFCleanup();
return(0);
}
void IFFCleanup(void)
{
short a;
if(TempX) {
for(a=0;a<8;a++) {
if(MyBm.Planes[a])
FreeRaster(MyBm.Planes[a],(long)TempX,(long)TempY);
}
}
TempX=TempY=0;
}
static ReadHeader(FILE *fp,struct BMHD *bmhd,USHORT *viewmode)
{
short status=0;
long id[3],sid,size;
if(!fread(id,12,1,fp)) return(BAD_IFF);
if(id[0]!=ID('F','O','R','M')) return(BAD_IFF);
if(id[2]!=ID('I','L','B','M')) return(BAD_IFF);
*viewmode=0;
do {
if(!fread(&sid,4,1,fp)) return(BAD_IFF);
if(sid==ID('C','M','A','P')) {
if(status&1) return(BAD_IFF); /* doppelt */
if(ReadCMAP(fp)) return(BAD_IFF);
status|=1;
} else if(sid==ID('C','A','M','G')) {
if(status&2) return(BAD_IFF); /* doppelt */
if(ReadCAMG(fp,viewmode)) return(BAD_IFF);
status|=2;
} else if(sid==ID('B','M','H','D')) {
if(status&4) return(BAD_IFF); /* doppelt */
if(ReadBMHD(fp,bmhd,viewmode)) return(BAD_IFF);
status|=4;
} else if(sid!=ID('B','O','D','Y')) {
if(!fread(&size,4,1,fp)) return(BAD_IFF);
size+=size&1;
if(fseek(fp,size,1)) return(BAD_IFF);
}
} while(sid!=ID('B','O','D','Y'));
if(!(status&1) || !(status&4)) return(BAD_IFF); /* Daten fehlen */
if(initcomp((short)bmhd->Width,(short)bmhd->Height,(short)bmhd->Depth,
(short)bmhd->Compression)) return(NO_MEMORY);
rows=bmhd->Height;
bytes=((bmhd->Width+15)>>3)&0xfffe;
depth=bmhd->Depth;
cmode=bmhd->Compression;
if(cmode<0 || cmode>2) return(UNKNOWN_COMPRESSION);
return(0);
}
static ReadBMHD(FILE *fp,struct BMHD *bmhd,USHORT *vmode)
{
if(!fread(bmhd,sizeof(struct BMHD),1,fp)) return(BAD_IFF);
if(bmhd->Size!=20) return(BAD_IFF);
*vmode=0;
if(bmhd->Width>400 && bmhd->Depth<=4) *vmode|=HIRES;
if(bmhd->Height>300) *vmode|=LACE;
if(bmhd->Depth>6) *vmode|=HAM;
return(0);
}
static ReadCMAP(FILE *fp)
{
long size;
short a;
int r,g,b;
if(!fread(&size,4,1,fp)) return(1);
if(size % 3) return(1);
size/=3;
if(size>256) return(1);
anzcolors=size;
for(a=0;a<size;a++) {
if((r=getc(fp))==EOF) return(1);
if((g=getc(fp))==EOF) return(1);
if((b=getc(fp))==EOF) return(1);
red[a]=r;
green[a]=g;
blue[a]=b;
}
return(0);
}
static ReadCAMG(FILE *fp,USHORT *vmode)
{
long a;
long size;
if(!fread(&size,4,1,fp)) return(1);
if(size!=4) return(1);
if(!fread(&a,4,1,fp)) return(1);
*vmode=a&CAMGMASK;
return(0);
}
static WriteBMHD(struct Window *w,FILE *fp,short mode)
{
struct BMHD bm;
if(!fwrite("FORM ILBMBMHD",16,1,fp)) return(1);
bm.Size=20;
bm.Width=w->Width;
bm.Height=w->Height;
bm.ScrWidth=w->WScreen->Width;
bm.ScrHeight=w->WScreen->Height;
bm.LeftEdge=bm.TopEdge=0;
bm.Depth=w->WScreen->BitMap.Depth;
bm.Mask=bm.Pad=0;
bm.Compression=mode;
bm.Transparent=0;
bm.YAspect=11;
bm.XAspect=10;
if((w->WScreen->ViewPort.Modes&LACE) && !(w->WScreen->ViewPort.Modes&HIRES)) bm.XAspect=20;
if(!(w->WScreen->ViewPort.Modes&LACE) && (w->WScreen->ViewPort.Modes&HIRES)) bm.XAspect=5;
if(!fwrite(&bm,sizeof(struct BMHD),1,fp)) return(1);
return(0);
}
static WriteCMAP(struct Screen *s,FILE *fp,int LastColors)
{
long size;
short anz,col;
short i;
struct ViewPort *vp;
ULONG ColorSet[3];
vp=&s->ViewPort;
if(!fwrite("CMAP",4,1,fp)) return(1);
anz=s->BitMap.Depth;
anz=1<<anz;
if(vp->Modes&HAM) { /* HAM-Screen */
if(anz<256) anz=16; else anz=64;
}
if(vp->Modes&EXTRA_HALFBRITE) anz=32;
size=3*anz;
if(!fwrite(&size,4,1,fp)) return(1);
if(!LastColors || anz>anzcolors) {
if(GfxBase->LibNode.lib_Version<39) {
for(i=0;i<anz;i++) {
col=GetRGB4(vp->ColorMap,(long)i);
red[i]=((col>>8)&0xf)<<4;
green[i]=((col>>4)&0xf)<<4;
blue[i]=(col&0xf)<<4;
}
} else {
for(i=0;i<anz;i++) {
GetRGB32(vp->ColorMap,i,1,ColorSet);
red[i]=ColorSet[0]>>24;
green[i]=ColorSet[1]>>24;
blue[i]=ColorSet[2]>>24;
}
}
}
for(i=0;i<anz;i++) {
if(putc(red[i],fp)==EOF) return(1);
if(putc(green[i],fp)==EOF) return(1);
if(putc(blue[i],fp)==EOF) return(1);
}
return(0);
}
static WriteCAMG(struct Screen *s,FILE *fp)
{
long a;
if(!fwrite("CAMG",4,1,fp)) return(1);
a=4;
if(!fwrite(&a,4,1,fp)) return(1);
a=s->ViewPort.Modes;
a&=CAMGMASK;
if(!fwrite(&a,4,1,fp)) return(1);
return(0);
}
static WriteBODY(struct Window *w,FILE *fp,short mode)
{
struct RastPort *rp;
struct BitMap *bm;
short bytes,rows;
long pos;
long size,bodysize,depth;
short x,y,p;
UBYTE *plane;
rp=w->RPort;
if(!fwrite("BODY ",8,1,fp)) return(1);
pos=ftell(fp);
bm=MyRast.BitMap;
bytes=((w->Width+15)>>3) & 0xfffe;
rows=w->Height;
depth=bm->Depth;
if(mode==2) {
for(x=0;x<bytes;x++) {
if(x) {
ClipBlit(rp,(x-1L)<<3L,0L,&MyRast,0L,0L,16L,(long)TempY,192L);
WaitBlit();
} else {
ClipBlit(rp,0L,0L,&MyRast,8L,0L,8L,(long)TempY,192L);
WaitBlit();
}
for(p=0;p<depth;p++) {
if(comprow(fp,rows,x,p)) return(1);
}
}
} else if(mode==1) {
for(y=0;y<rows;y++) {
if(y) {
ClipBlit(rp,0L,(long)y-1L,&MyRast,0L,0L,(long)TempX,2L,192L);
WaitBlit();
} else {
ClipBlit(rp,0L,0L,&MyRast,0L,1L,(long)TempX,1L,192L);
WaitBlit();
}
for(p=0;p<depth;p++) {
if(compline(fp,bytes,y,p)) return(1);
}
}
} else {
for(y=0;y<rows;y++) {
ClipBlit(rp,0L,(long)y,&MyRast,0L,0L,(long)TempX,1L,192L);
WaitBlit();
for(p=0;p<depth;p++) {
plane=MyBm.Planes[p];
for(x=0;x<bytes;x++) {
if(putc((int)(plane[x]),fp)==EOF) return(1);
}
}
}
}
size=ftell(fp);
if(size&1) if(putc(0,fp)==EOF) return(1); /* auf Wortgrenze auffuellen */
bodysize=size-pos;
if(fseek(fp,pos-4L,0)) return(1);
if(!fwrite(&bodysize,4,1,fp)) return(1);
if(fseek(fp,4L,0)) return(1);
size=(size-8+1)&0xfffffffe;
if(!fwrite(&size,4,1,fp)) return(1);
return(0);
}
static compline(FILE *fp,short bytes,short y,short p)
{
short x,x2,lx;
short found;
short a;
UBYTE * ptr;
ptr=&MyBm.Planes[p][bytes];
lx=0;
for(x=0;x<bytes;x++) {
x2=x;
found=0;
while(ptr[x2]==ptr[x2+1] && x2<bytes-1 && x2-x<127) x2++;
x2++;
if((x-lx)==0 && x2-x>=2 || x2-x>=3) {
if(x-lx) {
if(putc((int)(x-lx-1),fp)==EOF) return(1);
for(a=lx;a<x;a++) if(putc((int)ptr[a],fp)==EOF) return(1);
}
if(putc(x-x2+1,fp)==EOF) return(1);
if(putc((int)ptr[x],fp)==EOF) return(1);
x=x2-1;
found=1;
}
if(found) {
lx=x+1;
} else {
if(x-lx==127) {
if(fputc(127,fp)==EOF) return(1);
for(a=lx;a<=x;a++) if(putc(ptr[a],fp)==EOF) return(1);
lx=x+1;
}
}
}
if(lx<bytes) {
if(putc(bytes-lx-1,fp)==EOF) return(1);
for(a=lx;a<bytes;a++) if(putc((int)ptr[a],fp)==EOF) return(1);
}
return(0);
}
static comprow(FILE *fp,short rows,short x,short p)
{
short y,y2,y3,ly;
short found;
short a;
UBYTE * ptr;
ptr=MyBm.Planes[p];
ly=0;
for(y=0;y<rows;y++) {
y3=y2=y;
found=0;
while(ptr[(y2<<1)+1]==ptr[(y2<<1)+3] && y2<rows-1 &&
y2-y<127) y2++;
y2++;
if(x) {
while(ptr[y3<<1]==ptr[(y3<<1)+1] && y3<rows &&
y3-y<256) y3++;
}
if(y2>=y3) {
if(y-ly==0 && y2-y>=2 || y2-y>=3) {
if(y-ly) {
if(putc(y-ly-1,fp)==EOF) return(1);
for(a=ly;a<y;a++)
if(putc((int)ptr[(a<<1)+1],fp)==EOF) return(1);
}
if(putc(y-y2+1,fp)==EOF) return(1);
if(putc((int)ptr[(y<<1)+1],fp)==EOF) return(1);
y=y2-1;
found=1;
}
} else {
if(!y-ly && y3-y>=2 || y3-y>=3) {
if(y-ly) {
if(putc(y-ly-1,fp)==EOF) return(1);
for(a=ly;a<y;a++)
if(putc((int)ptr[(a<<1)+1],fp)==EOF) return(1);
}
if(putc(128,fp)==EOF) return(1);
if(putc(y3-y-1,fp)==EOF) return(1);
y=y3-1;
found=1;
}
}
if(found) {
ly=y+1;
} else {
if(y-ly==127) {
if(fputc(127,fp)==EOF) return(1);
for(a=ly;a<=y;a++)
if(putc(ptr[(a<<1)+1],fp)==EOF) return(1);
ly=y+1;
}
}
}
if(ly<rows) {
if(putc(rows-ly-1,fp)==EOF) return(1);
for(a=ly;a<rows;a++)
if(putc((int)ptr[(a<<1)+1],fp)==EOF) return(1);
}
return(0);
}
static initcomp(short width,short height,short depth,short mode)
{
short a;
if(TempX) IFFCleanup();
if(mode!=2) {
TempX=width;
TempY=2;
InitRastPort(&MyRast);
InitBitMap(&MyBm,(long)depth,(long)width,2L);
for(a=0;a<8;a++) MyBm.Planes[a]=0;
for(a=0;a<depth;a++) {
if(!(MyBm.Planes[a]=AllocRaster((long)width,2L))) return(NO_MEMORY);
}
} else {
TempX=16;
TempY=height;
InitRastPort(&MyRast);
InitBitMap(&MyBm,(long)depth,16L,(long)height);
for(a=0;a<8;a++) MyBm.Planes[a]=0;
for(a=0;a<depth;a++) {
if(!(MyBm.Planes[a]=AllocRaster(16L,(long)height))) return(NO_MEMORY);
}
}
MyRast.BitMap=&MyBm;
count=ptr=0;
runlen=1;
return(0);
}
static compget(FILE *fp)
{
int c;
char cc;
UBYTE val;
if(ptr>=count) {
if((c=getc(fp))==EOF) return(EOF);
cc=c;
ptr=0;
if(c==128) {
if((c=getc(fp))==EOF) return(EOF);
count=c+1;
for(c=0;c<count;c++) buf[c]=256;
} else if(cc>=0) {
count=cc+1;
for(c=0;c<count;c++) if((buf[c]=getc(fp))==EOF) return(EOF);
} else {
count=-cc+1;
if((c=getc(fp))==EOF) return(EOF);
val=c;
for(c=0;c<count;c++) buf[c]=val;
}
}
if(ptr>=count) return(EOF);
return(buf[ptr++]);
}