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#include "copyright.h" |
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#include <stdlib.h> |
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#include <string.h> |
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#include <math.h> |
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#include <ctype.h> |
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#include "rtio.h" |
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#include "depthcodec.h" |
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|
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|
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< |
#if 0 /* defined as macro in depthcodec.h */ |
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> |
#ifndef depth2code |
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/* Encode depth as 16-bit signed integer */ |
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int |
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depth2code(double d, double dref) |
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return -32768; |
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|
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if (d > dref) |
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return (int)(32768 - 32768*dref/d) - 1; |
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return (int)(32768.001 - 32768.*dref/d) - 1; |
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|
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< |
return (int)(32767*d/dref - 32768); |
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return (int)(32767.*d/dref - 32768.999); |
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} |
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#endif |
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|
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|
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#ifndef code2depth |
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/* Decode depth from 16-bit signed integer */ |
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double |
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code2depth(int c, double dref) |
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|
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if (c >= 32767) |
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return FHUGE; |
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< |
|
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< |
if (c < 0) |
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< |
return dref*(32767.5 + c)*(1./32767.); |
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< |
|
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< |
return dref*32768./(32766.5 - c); |
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> |
|
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> |
if (c >= -1) |
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> |
return dref*32768./(32766.5 - c); |
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> |
|
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> |
return dref*(32768.5 + c)*(1./32767.); |
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} |
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+ |
#endif |
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|
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|
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/* Set codec defaults */ |
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headline(char *s, void *p) |
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{ |
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DEPTHCODEC *dcp = (DEPTHCODEC *)p; |
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+ |
int rv; |
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|
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if (formatval(dcp->inpfmt, s)) /* don't pass format */ |
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return 0; |
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+ |
|
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if ((rv = isbigendian(s)) >= 0) { |
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dcp->swapped = (nativebigendian() != rv); |
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return 0; |
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+ |
} |
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/* check for reference depth */ |
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if (!strncmp(s, DEPTHSTR, LDEPTHSTR)) { |
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char *cp; |
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} |
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return -1; |
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} |
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< |
} else if (isview(s)) /* get view params */ |
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> |
if (dcp->hdrflags & HF_ENCODE) |
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> |
return 0; /* will add this later */ |
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> |
} else if (!strncmp(s, "SAMP360=", 8)) |
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> |
dcp->gotview--; |
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else if (isview(s)) /* get view params */ |
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dcp->gotview += (sscanview(&dcp->vw, s) > 0); |
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if (dcp->hdrflags & HF_HEADOUT) |
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fputs(s, stdout); /* copy to standard output */ |
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} |
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return 0; |
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} |
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+ |
dcp->gotview *= (dcp->gotview > 0); |
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if (dcp->hdrflags & HF_HEADOUT) { /* finish header */ |
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if (!(dcp->hdrflags & HF_HEADIN)) |
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newheader("RADIANCE", stdout); |
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fputformat("ascii", stdout); |
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break; |
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case 'f': |
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+ |
fputendian(stdout); |
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fputformat("float", stdout); |
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break; |
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case 'd': |
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+ |
fputendian(stdout); |
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fputformat("double", stdout); |
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break; |
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|
} |
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|
double |
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|
decode_depth_next(DEPTHCODEC *dcp) |
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|
{ |
230 |
< |
int c = getint(2, dcp->finp); |
230 |
> |
int c; |
231 |
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|
232 |
+ |
if (dcp->use_last) { |
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+ |
dcp->use_last = 0; |
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+ |
return code2depth(dcp->last_dc, dcp->refdepth); |
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+ |
} |
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+ |
c = getint(2, dcp->finp); |
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+ |
|
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if (c == EOF && feof(dcp->finp)) |
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return -1.; |
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|
241 |
+ |
dcp->last_dc = c; |
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dcp->curpos += 2; |
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|
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return code2depth(c, dcp->refdepth); |
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RREAL loc[2]; |
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FVECT rdir; |
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|
255 |
+ |
if (d >= FHUGE*.99) |
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+ |
goto badval; |
257 |
+ |
|
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pix2loc(loc, &dcp->res, x, y); |
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|
260 |
< |
if (viewray(wpos, rdir, &dcp->vw, loc[0], loc[1]) < -FTINY) { |
261 |
< |
VCOPY(wpos, dcp->vw.vp); |
262 |
< |
return 0; |
260 |
> |
if (viewray(wpos, rdir, &dcp->vw, loc[0], loc[1]) >= -FTINY) { |
261 |
> |
VSUM(wpos, wpos, rdir, d); |
262 |
> |
return 1; |
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|
} |
264 |
< |
VSUM(wpos, wpos, rdir, d); |
265 |
< |
return 1; |
264 |
> |
badval: |
265 |
> |
VCOPY(wpos, dcp->vw.vp); |
266 |
> |
return 0; |
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|
} |
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|
|
269 |
|
|
310 |
|
} |
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|
seekpos = dcp->dstart + 2*((long)y*scanlen(&dcp->res) + x); |
312 |
|
|
313 |
+ |
if (seekpos == dcp->curpos-2) { |
314 |
+ |
dcp->use_last++; /* avoids seek/read */ |
315 |
+ |
return 1; |
316 |
+ |
} |
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|
if (seekpos != dcp->curpos && |
318 |
|
fseek(dcp->finp, seekpos, SEEK_SET) == EOF) { |
319 |
|
if (dcp->hdrflags & HF_STDERR) { |
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|
return -1; |
324 |
|
} |
325 |
|
dcp->curpos = seekpos; |
326 |
+ |
dcp->use_last = 0; |
327 |
|
return 1; |
328 |
|
} |
329 |
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