void *ice_load(istream_t *is, int *ulen)
{
char header[12], *inbuf = 0, * outbuf = 0;
int dsize, csize;
const char * fname;
fname = istream_filename(is);
if (istream_read(is,header,12) != 12) {
SC68error_add("ice_load(%s) : no header", fname);
goto error;
}
csize = 0;
dsize = unice68_get_depacked_size(header, &csize);
if (dsize < 0) {
SC68error_add("ice_load(%s) : not ICE!", fname);
goto error;
}
inbuf = SC68alloc(csize + 12);
if (!inbuf) {
SC68error_add("ice_load(%s) : alloc input buffer failed", fname);
goto error;
}
memcpy(inbuf,header,12);
if (istream_read(is,inbuf+12,csize) != csize) {
SC68error_add("ice_load(%s) : read failed", fname);
goto error;
}
outbuf = SC68alloc(dsize);
if (!outbuf) {
SC68error_add("ice_load(%s) : alloc output buffer failed", fname);
goto error;
}
if (!unice68_depacker(outbuf, inbuf)) {
goto success;
}
error:
SC68free(outbuf);
outbuf = 0;
dsize = 0;
success:
SC68free(inbuf);
if (ulen) {
*ulen = dsize;
}
return outbuf;
}
int istream_getc(istream_t *istream)
{
unsigned char c;
return istream_read(istream,&c,1) != 1
? -1
: (c & 255);
}