mirror of
https://github.com/python/cpython.git
synced 2024-11-24 08:52:25 +01:00
3bbc62e9c2
Note addition of gethostbyaddr() and improved repr() for sockets, renaming of md5.md5() to md5.new(), and fixing of leaks in threads.
753 lines
16 KiB
C
753 lines
16 KiB
C
/*
|
|
* fastimg -
|
|
* Faster reading and writing of image files.
|
|
*
|
|
* This code should work on machines with any byte order.
|
|
*
|
|
* Could someone make this run real fast using multiple processors
|
|
* or how about using memory mapped files to speed it up?
|
|
*
|
|
* Paul Haeberli - 1991
|
|
*
|
|
* Changed to return sizes.
|
|
* Sjoerd Mullender - 1993
|
|
* Changed to incorporate into Python.
|
|
* Sjoerd Mullender - 1993
|
|
*/
|
|
#include "allobjects.h"
|
|
#include "modsupport.h"
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#include <string.h>
|
|
|
|
/*
|
|
* from image.h
|
|
*
|
|
*/
|
|
typedef struct {
|
|
unsigned short imagic; /* stuff saved on disk . . */
|
|
unsigned short type;
|
|
unsigned short dim;
|
|
unsigned short xsize;
|
|
unsigned short ysize;
|
|
unsigned short zsize;
|
|
unsigned long min;
|
|
unsigned long max;
|
|
unsigned long wastebytes;
|
|
char name[80];
|
|
unsigned long colormap;
|
|
|
|
long file; /* stuff used in core only */
|
|
unsigned short flags;
|
|
short dorev;
|
|
short x;
|
|
short y;
|
|
short z;
|
|
short cnt;
|
|
unsigned short *ptr;
|
|
unsigned short *base;
|
|
unsigned short *tmpbuf;
|
|
unsigned long offset;
|
|
unsigned long rleend; /* for rle images */
|
|
unsigned long *rowstart; /* for rle images */
|
|
long *rowsize; /* for rle images */
|
|
} IMAGE;
|
|
|
|
#define IMAGIC 0732
|
|
|
|
#define TYPEMASK 0xff00
|
|
#define BPPMASK 0x00ff
|
|
#define ITYPE_VERBATIM 0x0000
|
|
#define ITYPE_RLE 0x0100
|
|
#define ISRLE(type) (((type) & 0xff00) == ITYPE_RLE)
|
|
#define ISVERBATIM(type) (((type) & 0xff00) == ITYPE_VERBATIM)
|
|
#define BPP(type) ((type) & BPPMASK)
|
|
#define RLE(bpp) (ITYPE_RLE | (bpp))
|
|
#define VERBATIM(bpp) (ITYPE_VERBATIM | (bpp))
|
|
/*
|
|
* end of image.h stuff
|
|
*
|
|
*/
|
|
|
|
#define RINTLUM (79)
|
|
#define GINTLUM (156)
|
|
#define BINTLUM (21)
|
|
|
|
#define ILUM(r,g,b) ((int)(RINTLUM*(r)+GINTLUM*(g)+BINTLUM*(b))>>8)
|
|
|
|
#define OFFSET_R 3 /* this is byte order dependent */
|
|
#define OFFSET_G 2
|
|
#define OFFSET_B 1
|
|
#define OFFSET_A 0
|
|
|
|
#define CHANOFFSET(z) (3-(z)) /* this is byte order dependent */
|
|
|
|
static expandrow PROTO((unsigned char *, unsigned char *, int));
|
|
static setalpha PROTO((unsigned char *, int));
|
|
static copybw PROTO((long *, int));
|
|
static interleaverow PROTO((unsigned char *, unsigned char *, int, int));
|
|
static int compressrow PROTO((unsigned char *, unsigned char *, int, int));
|
|
static lumrow PROTO((unsigned char *, unsigned char *, int));
|
|
|
|
#ifdef ADD_TAGS
|
|
#define TAGLEN (5)
|
|
#else
|
|
#define TAGLEN (0)
|
|
#endif
|
|
|
|
static object *ImgfileError;
|
|
|
|
static int reverse_order;
|
|
|
|
#ifdef ADD_TAGS
|
|
/*
|
|
* addlongimgtag -
|
|
* this is used to extract image data from core dumps.
|
|
*
|
|
*/
|
|
addlongimgtag(dptr,xsize,ysize)
|
|
unsigned long *dptr;
|
|
int xsize, ysize;
|
|
{
|
|
dptr = dptr+(xsize*ysize);
|
|
dptr[0] = 0x12345678;
|
|
dptr[1] = 0x59493333;
|
|
dptr[2] = 0x69434222;
|
|
dptr[3] = xsize;
|
|
dptr[4] = ysize;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* byte order independent read/write of shorts and longs.
|
|
*
|
|
*/
|
|
static unsigned short getshort(inf)
|
|
FILE *inf;
|
|
{
|
|
unsigned char buf[2];
|
|
|
|
fread(buf,2,1,inf);
|
|
return (buf[0]<<8)+(buf[1]<<0);
|
|
}
|
|
|
|
static unsigned long getlong(inf)
|
|
FILE *inf;
|
|
{
|
|
unsigned char buf[4];
|
|
|
|
fread(buf,4,1,inf);
|
|
return (buf[0]<<24)+(buf[1]<<16)+(buf[2]<<8)+(buf[3]<<0);
|
|
}
|
|
|
|
static putshort(outf,val)
|
|
FILE *outf;
|
|
unsigned short val;
|
|
{
|
|
unsigned char buf[2];
|
|
|
|
buf[0] = (val>>8);
|
|
buf[1] = (val>>0);
|
|
fwrite(buf,2,1,outf);
|
|
}
|
|
|
|
static int putlong(outf,val)
|
|
FILE *outf;
|
|
unsigned long val;
|
|
{
|
|
unsigned char buf[4];
|
|
|
|
buf[0] = (val>>24);
|
|
buf[1] = (val>>16);
|
|
buf[2] = (val>>8);
|
|
buf[3] = (val>>0);
|
|
return fwrite(buf,4,1,outf);
|
|
}
|
|
|
|
static readheader(inf,image)
|
|
FILE *inf;
|
|
IMAGE *image;
|
|
{
|
|
memset(image,0,sizeof(IMAGE));
|
|
image->imagic = getshort(inf);
|
|
image->type = getshort(inf);
|
|
image->dim = getshort(inf);
|
|
image->xsize = getshort(inf);
|
|
image->ysize = getshort(inf);
|
|
image->zsize = getshort(inf);
|
|
}
|
|
|
|
static int writeheader(outf,image)
|
|
FILE *outf;
|
|
IMAGE *image;
|
|
{
|
|
IMAGE t;
|
|
|
|
memset(&t,0,sizeof(IMAGE));
|
|
fwrite(&t,sizeof(IMAGE),1,outf);
|
|
fseek(outf,0,SEEK_SET);
|
|
putshort(outf,image->imagic);
|
|
putshort(outf,image->type);
|
|
putshort(outf,image->dim);
|
|
putshort(outf,image->xsize);
|
|
putshort(outf,image->ysize);
|
|
putshort(outf,image->zsize);
|
|
putlong(outf,image->min);
|
|
putlong(outf,image->max);
|
|
putlong(outf,0);
|
|
return fwrite("no name",8,1,outf);
|
|
}
|
|
|
|
static int writetab(outf,tab,len)
|
|
FILE *outf;
|
|
/*unsigned*/ long *tab;
|
|
int len;
|
|
{
|
|
int r;
|
|
|
|
while(len) {
|
|
r = putlong(outf,*tab++);
|
|
len -= 4;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static readtab(inf,tab,len)
|
|
FILE *inf;
|
|
/*unsigned*/ long *tab;
|
|
int len;
|
|
{
|
|
while(len) {
|
|
*tab++ = getlong(inf);
|
|
len -= 4;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* sizeofimage -
|
|
* return the xsize and ysize of an iris image file.
|
|
*
|
|
*/
|
|
static object *
|
|
sizeofimage(self, args)
|
|
object *self, *args;
|
|
{
|
|
char *name;
|
|
IMAGE image;
|
|
FILE *inf;
|
|
|
|
if (!getargs(args, "s", &name))
|
|
return NULL;
|
|
|
|
inf = fopen(name,"r");
|
|
if(!inf) {
|
|
err_setstr(ImgfileError, "can't open image file");
|
|
return NULL;
|
|
}
|
|
readheader(inf,&image);
|
|
fclose(inf);
|
|
if(image.imagic != IMAGIC) {
|
|
err_setstr(ImgfileError, "bad magic number in image file");
|
|
return NULL;
|
|
}
|
|
return mkvalue("(ii)", image.xsize, image.ysize);
|
|
}
|
|
|
|
/*
|
|
* longimagedata -
|
|
* read in a B/W RGB or RGBA iris image file and return a
|
|
* pointer to an array of longs.
|
|
*
|
|
*/
|
|
static object *
|
|
longimagedata(self, args)
|
|
object *self, *args;
|
|
{
|
|
char *name;
|
|
unsigned char *base, *lptr;
|
|
unsigned char *rledat, *verdat;
|
|
long *starttab, *lengthtab;
|
|
FILE *inf;
|
|
IMAGE image;
|
|
int y, z, tablen;
|
|
int xsize, ysize, zsize;
|
|
int bpp, rle, cur, badorder;
|
|
int rlebuflen;
|
|
object *rv;
|
|
|
|
if (!getargs(args, "s", &name))
|
|
return NULL;
|
|
|
|
inf = fopen(name,"r");
|
|
if(!inf) {
|
|
err_setstr(ImgfileError,"can't open image file");
|
|
return NULL;
|
|
}
|
|
readheader(inf,&image);
|
|
if(image.imagic != IMAGIC) {
|
|
err_setstr(ImgfileError,"bad magic number in image file");
|
|
fclose(inf);
|
|
return NULL;
|
|
}
|
|
rle = ISRLE(image.type);
|
|
bpp = BPP(image.type);
|
|
if(bpp != 1 ) {
|
|
err_setstr(ImgfileError,"image must have 1 byte per pix chan");
|
|
fclose(inf);
|
|
return NULL;
|
|
}
|
|
xsize = image.xsize;
|
|
ysize = image.ysize;
|
|
zsize = image.zsize;
|
|
if(rle) {
|
|
tablen = ysize*zsize*sizeof(long);
|
|
starttab = (long *)malloc(tablen);
|
|
lengthtab = (long *)malloc(tablen);
|
|
rlebuflen = 1.05*xsize+10;
|
|
rledat = (unsigned char *)malloc(rlebuflen);
|
|
fseek(inf,512,SEEK_SET);
|
|
readtab(inf,starttab,tablen);
|
|
readtab(inf,lengthtab,tablen);
|
|
|
|
/* check data order */
|
|
cur = 0;
|
|
badorder = 0;
|
|
for(y=0; y<ysize; y++) {
|
|
for(z=0; z<zsize; z++) {
|
|
if(starttab[y+z*ysize]<cur) {
|
|
badorder = 1;
|
|
break;
|
|
}
|
|
cur = starttab[y+z*ysize];
|
|
}
|
|
if(badorder)
|
|
break;
|
|
}
|
|
|
|
fseek(inf,512+2*tablen,SEEK_SET);
|
|
cur = 512+2*tablen;
|
|
rv = newsizedstringobject((char *) 0,
|
|
(xsize*ysize+TAGLEN)*sizeof(long));
|
|
if (rv == NULL) {
|
|
fclose(inf);
|
|
free(lengthtab);
|
|
free(starttab);
|
|
free(rledat);
|
|
return NULL;
|
|
}
|
|
base = (unsigned char *) getstringvalue(rv);
|
|
#ifdef ADD_TAGS
|
|
addlongimgtag(base,xsize,ysize);
|
|
#endif
|
|
if(badorder) {
|
|
for(z=0; z<zsize; z++) {
|
|
lptr = base;
|
|
if (reverse_order)
|
|
lptr += (ysize - 1) * xsize * sizeof(unsigned long);
|
|
for(y=0; y<ysize; y++) {
|
|
if(cur != starttab[y+z*ysize]) {
|
|
fseek(inf,starttab[y+z*ysize],SEEK_SET);
|
|
cur = starttab[y+z*ysize];
|
|
}
|
|
if(lengthtab[y+z*ysize]>rlebuflen) {
|
|
err_setstr(ImgfileError,"rlebuf is too small - bad poop");
|
|
fclose(inf);
|
|
DECREF(rv);
|
|
free(rledat);
|
|
free(starttab);
|
|
free(lengthtab);
|
|
return NULL;
|
|
}
|
|
fread(rledat,lengthtab[y+z*ysize],1,inf);
|
|
cur += lengthtab[y+z*ysize];
|
|
expandrow(lptr,rledat,3-z);
|
|
if (reverse_order)
|
|
lptr -= xsize * sizeof(unsigned long);
|
|
else
|
|
lptr += xsize * sizeof(unsigned long);
|
|
}
|
|
}
|
|
} else {
|
|
lptr = base;
|
|
if (reverse_order)
|
|
lptr += (ysize - 1) * xsize * sizeof(unsigned long);
|
|
for(y=0; y<ysize; y++) {
|
|
for(z=0; z<zsize; z++) {
|
|
if(cur != starttab[y+z*ysize]) {
|
|
fseek(inf,starttab[y+z*ysize],SEEK_SET);
|
|
cur = starttab[y+z*ysize];
|
|
}
|
|
fread(rledat,lengthtab[y+z*ysize],1,inf);
|
|
cur += lengthtab[y+z*ysize];
|
|
expandrow(lptr,rledat,3-z);
|
|
}
|
|
if (reverse_order)
|
|
lptr -= xsize * sizeof(unsigned long);
|
|
else
|
|
lptr += xsize * sizeof(unsigned long);
|
|
}
|
|
}
|
|
if(zsize == 3)
|
|
setalpha(base,xsize*ysize);
|
|
else if(zsize<3)
|
|
copybw((long *) base,xsize*ysize);
|
|
fclose(inf);
|
|
free(starttab);
|
|
free(lengthtab);
|
|
free(rledat);
|
|
return rv;
|
|
} else {
|
|
rv = newsizedstringobject((char *) 0,
|
|
(xsize*ysize+TAGLEN)*sizeof(long));
|
|
if (rv == NULL) {
|
|
fclose(inf);
|
|
return NULL;
|
|
}
|
|
base = (unsigned char *) getstringvalue(rv);
|
|
#ifdef ADD_TAGS
|
|
addlongimgtag(base,xsize,ysize);
|
|
#endif
|
|
verdat = (unsigned char *)malloc(xsize);
|
|
fseek(inf,512,SEEK_SET);
|
|
for(z=0; z<zsize; z++) {
|
|
lptr = base;
|
|
if (reverse_order)
|
|
lptr += (ysize - 1) * xsize * sizeof(unsigned long);
|
|
for(y=0; y<ysize; y++) {
|
|
fread(verdat,xsize,1,inf);
|
|
interleaverow(lptr,verdat,3-z,xsize);
|
|
if (reverse_order)
|
|
lptr -= xsize * sizeof(unsigned long);
|
|
else
|
|
lptr += xsize * sizeof(unsigned long);
|
|
}
|
|
}
|
|
if(zsize == 3)
|
|
setalpha(base,xsize*ysize);
|
|
else if(zsize<3)
|
|
copybw((long *) base,xsize*ysize);
|
|
fclose(inf);
|
|
free(verdat);
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
/* static utility functions for longimagedata */
|
|
|
|
static interleaverow(lptr,cptr,z,n)
|
|
unsigned char *lptr, *cptr;
|
|
int z, n;
|
|
{
|
|
lptr += z;
|
|
while(n--) {
|
|
*lptr = *cptr++;
|
|
lptr += 4;
|
|
}
|
|
}
|
|
|
|
static copybw(lptr,n)
|
|
long *lptr;
|
|
int n;
|
|
{
|
|
while(n>=8) {
|
|
lptr[0] = 0xff000000+(0x010101*(lptr[0]&0xff));
|
|
lptr[1] = 0xff000000+(0x010101*(lptr[1]&0xff));
|
|
lptr[2] = 0xff000000+(0x010101*(lptr[2]&0xff));
|
|
lptr[3] = 0xff000000+(0x010101*(lptr[3]&0xff));
|
|
lptr[4] = 0xff000000+(0x010101*(lptr[4]&0xff));
|
|
lptr[5] = 0xff000000+(0x010101*(lptr[5]&0xff));
|
|
lptr[6] = 0xff000000+(0x010101*(lptr[6]&0xff));
|
|
lptr[7] = 0xff000000+(0x010101*(lptr[7]&0xff));
|
|
lptr += 8;
|
|
n-=8;
|
|
}
|
|
while(n--) {
|
|
*lptr = 0xff000000+(0x010101*(*lptr&0xff));
|
|
lptr++;
|
|
}
|
|
}
|
|
|
|
static setalpha(lptr,n)
|
|
unsigned char *lptr;
|
|
{
|
|
while(n>=8) {
|
|
lptr[0*4] = 0xff;
|
|
lptr[1*4] = 0xff;
|
|
lptr[2*4] = 0xff;
|
|
lptr[3*4] = 0xff;
|
|
lptr[4*4] = 0xff;
|
|
lptr[5*4] = 0xff;
|
|
lptr[6*4] = 0xff;
|
|
lptr[7*4] = 0xff;
|
|
lptr += 4*8;
|
|
n -= 8;
|
|
}
|
|
while(n--) {
|
|
*lptr = 0xff;
|
|
lptr += 4;
|
|
}
|
|
}
|
|
|
|
static expandrow(optr,iptr,z)
|
|
unsigned char *optr, *iptr;
|
|
int z;
|
|
{
|
|
unsigned char pixel, count;
|
|
|
|
optr += z;
|
|
while(1) {
|
|
pixel = *iptr++;
|
|
if ( !(count = (pixel & 0x7f)) )
|
|
return;
|
|
if(pixel & 0x80) {
|
|
while(count>=8) {
|
|
optr[0*4] = iptr[0];
|
|
optr[1*4] = iptr[1];
|
|
optr[2*4] = iptr[2];
|
|
optr[3*4] = iptr[3];
|
|
optr[4*4] = iptr[4];
|
|
optr[5*4] = iptr[5];
|
|
optr[6*4] = iptr[6];
|
|
optr[7*4] = iptr[7];
|
|
optr += 8*4;
|
|
iptr += 8;
|
|
count -= 8;
|
|
}
|
|
while(count--) {
|
|
*optr = *iptr++;
|
|
optr+=4;
|
|
}
|
|
} else {
|
|
pixel = *iptr++;
|
|
while(count>=8) {
|
|
optr[0*4] = pixel;
|
|
optr[1*4] = pixel;
|
|
optr[2*4] = pixel;
|
|
optr[3*4] = pixel;
|
|
optr[4*4] = pixel;
|
|
optr[5*4] = pixel;
|
|
optr[6*4] = pixel;
|
|
optr[7*4] = pixel;
|
|
optr += 8*4;
|
|
count -= 8;
|
|
}
|
|
while(count--) {
|
|
*optr = pixel;
|
|
optr+=4;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* longstoimage -
|
|
* copy an array of longs to an iris image file. Each long
|
|
* represents one pixel. xsize and ysize specify the dimensions of
|
|
* the pixel array. zsize specifies what kind of image file to
|
|
* write out. if zsize is 1, the luminance of the pixels are
|
|
* calculated, and a sinlge channel black and white image is saved.
|
|
* If zsize is 3, an RGB image file is saved. If zsize is 4, an
|
|
* RGBA image file is saved.
|
|
*
|
|
*/
|
|
static object *
|
|
longstoimage(self, args)
|
|
object *self, *args;
|
|
{
|
|
unsigned char *lptr;
|
|
char *name;
|
|
int xsize, ysize, zsize;
|
|
FILE *outf;
|
|
IMAGE image;
|
|
int tablen, y, z, pos, len;
|
|
long *starttab, *lengthtab;
|
|
unsigned char *rlebuf;
|
|
unsigned char *lumbuf;
|
|
int rlebuflen, goodwrite;
|
|
|
|
if (!getargs(args, "(s#iiis)", &lptr, &len, &xsize, &ysize, &zsize, &name))
|
|
return NULL;
|
|
|
|
goodwrite = 1;
|
|
outf = fopen(name,"w");
|
|
if(!outf) {
|
|
err_setstr(ImgfileError,"can't open output file");
|
|
return NULL;
|
|
}
|
|
tablen = ysize*zsize*sizeof(long);
|
|
|
|
starttab = (long *)malloc(tablen);
|
|
lengthtab = (long *)malloc(tablen);
|
|
rlebuflen = 1.05*xsize+10;
|
|
rlebuf = (unsigned char *)malloc(rlebuflen);
|
|
lumbuf = (unsigned char *)malloc(xsize*sizeof(long));
|
|
|
|
memset(&image,0,sizeof(IMAGE));
|
|
image.imagic = IMAGIC;
|
|
image.type = RLE(1);
|
|
if(zsize>1)
|
|
image.dim = 3;
|
|
else
|
|
image.dim = 2;
|
|
image.xsize = xsize;
|
|
image.ysize = ysize;
|
|
image.zsize = zsize;
|
|
image.min = 0;
|
|
image.max = 255;
|
|
goodwrite *= writeheader(outf,&image);
|
|
fseek(outf,512+2*tablen,SEEK_SET);
|
|
pos = 512+2*tablen;
|
|
if (reverse_order)
|
|
lptr += (ysize - 1) * xsize * sizeof(unsigned long);
|
|
for(y=0; y<ysize; y++) {
|
|
for(z=0; z<zsize; z++) {
|
|
if(zsize == 1) {
|
|
lumrow(lptr,lumbuf,xsize);
|
|
len = compressrow(lumbuf,rlebuf,CHANOFFSET(z),xsize);
|
|
} else {
|
|
len = compressrow(lptr,rlebuf,CHANOFFSET(z),xsize);
|
|
}
|
|
if(len>rlebuflen) {
|
|
err_setstr(ImgfileError,"rlebuf is too small - bad poop");
|
|
free(starttab);
|
|
free(lengthtab);
|
|
free(rlebuf);
|
|
free(lumbuf);
|
|
fclose(outf);
|
|
return NULL;
|
|
}
|
|
goodwrite *= fwrite(rlebuf,len,1,outf);
|
|
starttab[y+z*ysize] = pos;
|
|
lengthtab[y+z*ysize] = len;
|
|
pos += len;
|
|
}
|
|
if (reverse_order)
|
|
lptr -= xsize * sizeof(unsigned long);
|
|
else
|
|
lptr += xsize * sizeof(unsigned long);
|
|
}
|
|
|
|
fseek(outf,512,SEEK_SET);
|
|
goodwrite *= writetab(outf,starttab,tablen);
|
|
goodwrite *= writetab(outf,lengthtab,tablen);
|
|
free(starttab);
|
|
free(lengthtab);
|
|
free(rlebuf);
|
|
free(lumbuf);
|
|
fclose(outf);
|
|
if(goodwrite) {
|
|
INCREF(None);
|
|
return None;
|
|
} else {
|
|
err_setstr(ImgfileError,"not enough space for image!!");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* static utility functions for longstoimage */
|
|
|
|
static lumrow(rgbptr,lumptr,n)
|
|
unsigned char *rgbptr, *lumptr;
|
|
int n;
|
|
{
|
|
lumptr += CHANOFFSET(0);
|
|
while(n--) {
|
|
*lumptr = ILUM(rgbptr[OFFSET_R],rgbptr[OFFSET_G],rgbptr[OFFSET_B]);
|
|
lumptr += 4;
|
|
rgbptr += 4;
|
|
}
|
|
}
|
|
|
|
static int compressrow(lbuf,rlebuf,z,cnt)
|
|
unsigned char *lbuf, *rlebuf;
|
|
int z, cnt;
|
|
{
|
|
unsigned char *iptr, *ibufend, *sptr, *optr;
|
|
short todo, cc;
|
|
long count;
|
|
|
|
lbuf += z;
|
|
iptr = lbuf;
|
|
ibufend = iptr+cnt*4;
|
|
optr = rlebuf;
|
|
|
|
while(iptr<ibufend) {
|
|
sptr = iptr;
|
|
iptr += 8;
|
|
while((iptr<ibufend)&& ((iptr[-8]!=iptr[-4])||(iptr[-4]!=iptr[0])))
|
|
iptr+=4;
|
|
iptr -= 8;
|
|
count = (iptr-sptr)/4;
|
|
while(count) {
|
|
todo = count>126 ? 126:count;
|
|
count -= todo;
|
|
*optr++ = 0x80|todo;
|
|
while(todo>8) {
|
|
optr[0] = sptr[0*4];
|
|
optr[1] = sptr[1*4];
|
|
optr[2] = sptr[2*4];
|
|
optr[3] = sptr[3*4];
|
|
optr[4] = sptr[4*4];
|
|
optr[5] = sptr[5*4];
|
|
optr[6] = sptr[6*4];
|
|
optr[7] = sptr[7*4];
|
|
optr += 8;
|
|
sptr += 8*4;
|
|
todo -= 8;
|
|
}
|
|
while(todo--) {
|
|
*optr++ = *sptr;
|
|
sptr += 4;
|
|
}
|
|
}
|
|
sptr = iptr;
|
|
cc = *iptr;
|
|
iptr += 4;
|
|
while( (iptr<ibufend) && (*iptr == cc) )
|
|
iptr += 4;
|
|
count = (iptr-sptr)/4;
|
|
while(count) {
|
|
todo = count>126 ? 126:count;
|
|
count -= todo;
|
|
*optr++ = todo;
|
|
*optr++ = cc;
|
|
}
|
|
}
|
|
*optr++ = 0;
|
|
return optr - (unsigned char *)rlebuf;
|
|
}
|
|
|
|
static object *
|
|
ttob(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
int order, oldorder;
|
|
|
|
if (!getargs(args, "i", &order))
|
|
return NULL;
|
|
oldorder = reverse_order;
|
|
reverse_order = order;
|
|
return newintobject(oldorder);
|
|
}
|
|
|
|
static struct methodlist rgbimg_methods[] = {
|
|
{"sizeofimage", sizeofimage},
|
|
{"longimagedata", longimagedata},
|
|
{"longstoimage", longstoimage},
|
|
{"ttob", ttob},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
void
|
|
initrgbimg()
|
|
{
|
|
object *m, *d;
|
|
m = initmodule("rgbimg", rgbimg_methods);
|
|
d = getmoduledict(m);
|
|
ImgfileError = newstringobject("rgbimg.error");
|
|
if (ImgfileError == NULL || dictinsert(d, "error", ImgfileError))
|
|
fatal("can't define rgbimg.error");
|
|
}
|