1 |
/* Copyright (c) 1992 Regents of the University of California */ |
2 |
|
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#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ LBL"; |
5 |
#endif |
6 |
|
7 |
/* |
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* Combine picture files according to calcomp functions. |
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* |
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* 1/4/89 |
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*/ |
12 |
|
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#include "standard.h" |
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|
15 |
#include "color.h" |
16 |
|
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#include "resolu.h" |
18 |
|
19 |
#include "calcomp.h" |
20 |
|
21 |
#include "view.h" |
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|
23 |
#define MAXINP 32 /* maximum number of input files */ |
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#define WINSIZ 17 /* scanline window size */ |
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#define MIDSCN ((WINSIZ-1)/2+1) |
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|
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struct { |
28 |
char *name; /* file or command name */ |
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FILE *fp; /* stream pointer */ |
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VIEW vw; /* view for picture */ |
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RESOLU rs; /* image resolution and orientation */ |
32 |
COLOR *scan[WINSIZ]; /* input scanline window */ |
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COLOR coef; /* coefficient */ |
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COLOR expos; /* recorded exposure */ |
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} input[MAXINP]; /* input pictures */ |
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|
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int nfiles; /* number of input files */ |
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|
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char ourfmt[LPICFMT+1] = PICFMT; /* input picture format */ |
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|
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char Command[] = "<Command>"; |
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char vcolin[3][4] = {"ri", "gi", "bi"}; |
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char vcolout[3][4] = {"ro", "go", "bo"}; |
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char vbrtin[] = "li"; |
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char vbrtout[] = "lo"; |
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char vcolexp[3][4] = {"re", "ge", "be"}; |
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char vbrtexp[] = "le"; |
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|
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char vray[6][4] = {"Ox", "Oy", "Oz", "Dx", "Dy", "Dz"}; |
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|
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char vnfiles[] = "nfiles"; |
52 |
char vxmax[] = "xmax"; |
53 |
char vymax[] = "ymax"; |
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char vxres[] = "xres"; |
55 |
char vyres[] = "yres"; |
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char vxpos[] = "x"; |
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char vypos[] = "y"; |
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|
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int nowarn = 0; /* no warning messages? */ |
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|
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int xmax = 0, ymax = 0; /* input resolution */ |
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|
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int xscan, yscan; /* input position */ |
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|
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int xres, yres; /* output resolution */ |
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|
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int xpos, ypos; /* output position */ |
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|
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char *progname; /* global argv[0] */ |
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|
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int wrongformat = 0; |
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int gotview; |
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|
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FILE *popen(); |
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|
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extern char *emalloc(); |
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|
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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int original; |
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double f; |
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int a, i; |
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#ifdef MSDOS |
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extern int _fmode; |
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_fmode = O_BINARY; |
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setmode(fileno(stdin), O_BINARY); |
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setmode(fileno(stdout), O_BINARY); |
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#endif |
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progname = argv[0]; |
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/* scan options */ |
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for (a = 1; a < argc; a++) { |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case 'x': |
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case 'y': |
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a++; |
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continue; |
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case 'w': |
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nowarn = !nowarn; |
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continue; |
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case 'f': |
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case 'e': |
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a++; |
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continue; |
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} |
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break; |
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} |
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newheader("RADIANCE", stdout); /* start header */ |
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/* process files */ |
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for (nfiles = 0; nfiles < MAXINP; nfiles++) { |
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setcolor(input[nfiles].coef, 1.0, 1.0, 1.0); |
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setcolor(input[nfiles].expos, 1.0, 1.0, 1.0); |
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copystruct(&input[nfiles].vw, &stdview); |
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} |
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nfiles = 0; |
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original = 0; |
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for ( ; a < argc; a++) { |
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if (nfiles >= MAXINP) { |
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eputs(argv[0]); |
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eputs(": too many picture files\n"); |
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quit(1); |
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} |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case '\0': |
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input[nfiles].name = "<stdin>"; |
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input[nfiles].fp = stdin; |
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break; |
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case 'o': |
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original++; |
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continue; |
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case 's': |
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f = atof(argv[++a]); |
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scalecolor(input[nfiles].coef, f); |
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continue; |
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case 'c': |
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colval(input[nfiles].coef,RED)*=atof(argv[++a]); |
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colval(input[nfiles].coef,GRN)*=atof(argv[++a]); |
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colval(input[nfiles].coef,BLU)*=atof(argv[++a]); |
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continue; |
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default: |
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goto usage; |
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} |
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else { |
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if (argv[a][0] == '!') { |
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input[nfiles].name = Command; |
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input[nfiles].fp = popen(argv[a]+1, "r"); |
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} else { |
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input[nfiles].name = argv[a]; |
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input[nfiles].fp = fopen(argv[a], "r"); |
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} |
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if (input[nfiles].fp == NULL) { |
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perror(argv[a]); |
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quit(1); |
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} |
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} |
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checkfile(); |
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if (original) { |
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colval(input[nfiles].coef,RED) /= |
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colval(input[nfiles].expos,RED); |
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colval(input[nfiles].coef,GRN) /= |
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colval(input[nfiles].expos,GRN); |
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colval(input[nfiles].coef,BLU) /= |
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colval(input[nfiles].expos,BLU); |
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} |
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nfiles++; |
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original = 0; |
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} |
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init(); /* set constants */ |
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/* go back and get expressions */ |
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for (a = 1; a < argc; a++) { |
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if (argv[a][0] == '-') |
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switch (argv[a][1]) { |
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case 'x': |
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varset(vxres, ':', eval(argv[++a])); |
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continue; |
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case 'y': |
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varset(vyres, ':', eval(argv[++a])); |
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continue; |
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case 'w': |
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continue; |
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case 'f': |
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fcompile(argv[++a]); |
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continue; |
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case 'e': |
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scompile(argv[++a], NULL, 0); |
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continue; |
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} |
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break; |
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} |
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/* set/get output resolution */ |
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if (!vardefined(vxres)) |
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varset(vxres, ':', (double)xmax); |
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if (!vardefined(vyres)) |
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varset(vyres, ':', (double)ymax); |
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xres = varvalue(vxres) + .5; |
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yres = varvalue(vyres) + .5; |
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if (xres <= 0 || yres <= 0) { |
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eputs(argv[0]); |
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eputs(": illegal output resolution\n"); |
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quit(1); |
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} |
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/* complete header */ |
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printargs(argc, argv, stdout); |
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if (strcmp(ourfmt, PICFMT)) |
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fputformat(ourfmt, stdout); /* print format if known */ |
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putchar('\n'); |
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fprtresolu(xres, yres, stdout); |
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/* combine pictures */ |
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combine(); |
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quit(0); |
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usage: |
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eputs("Usage: "); |
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eputs(argv[0]); |
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eputs( |
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" [-w][-x xr][-y yr][-e expr][-f file] [ [-o][-s f][-c r g b] pic ..]\n"); |
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quit(1); |
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} |
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|
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|
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tputs(s) /* put out string preceded by a tab */ |
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char *s; |
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{ |
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char fmt[32]; |
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double d; |
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COLOR ctmp; |
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|
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if (isheadid(s)) /* header id */ |
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return; /* don't echo */ |
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if (formatval(fmt, s)) { /* check format */ |
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if (globmatch(ourfmt, fmt)) { |
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wrongformat = 0; |
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strcpy(ourfmt, fmt); |
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} else |
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wrongformat = 1; |
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return; /* don't echo */ |
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} |
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if (isexpos(s)) { /* exposure */ |
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d = exposval(s); |
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scalecolor(input[nfiles].expos, d); |
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} else if (iscolcor(s)) { /* color correction */ |
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colcorval(ctmp, s); |
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multcolor(input[nfiles].expos, ctmp); |
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} else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0) |
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gotview++; |
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/* echo line */ |
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putchar('\t'); |
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fputs(s, stdout); |
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} |
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|
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|
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checkfile() /* ready a file */ |
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{ |
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register int i; |
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/* process header */ |
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gotview = 0; |
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fputs(input[nfiles].name, stdout); |
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fputs(":\n", stdout); |
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getheader(input[nfiles].fp, tputs, NULL); |
263 |
if (wrongformat) { |
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eputs(input[nfiles].name); |
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eputs(": not in Radiance picture format\n"); |
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quit(1); |
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} |
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if (!gotview || setview(&input[nfiles].vw) != NULL) |
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input[nfiles].vw.type = 0; |
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if (!fgetsresolu(&input[nfiles].rs, input[nfiles].fp)) { |
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eputs(input[nfiles].name); |
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eputs(": bad picture size\n"); |
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quit(1); |
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} |
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if (xmax == 0 && ymax == 0) { |
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xmax = scanlen(&input[nfiles].rs); |
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ymax = numscans(&input[nfiles].rs); |
278 |
} else if (scanlen(&input[nfiles].rs) != xmax || |
279 |
numscans(&input[nfiles].rs) != ymax) { |
280 |
eputs(input[nfiles].name); |
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eputs(": resolution mismatch\n"); |
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quit(1); |
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} |
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/* allocate scanlines */ |
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for (i = 0; i < WINSIZ; i++) |
286 |
input[nfiles].scan[i] = (COLOR *)emalloc(xmax*sizeof(COLOR)); |
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} |
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|
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|
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double |
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rgb_bright(clr) |
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COLOR clr; |
293 |
{ |
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return(bright(clr)); |
295 |
} |
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|
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|
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double |
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xyz_bright(clr) |
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COLOR clr; |
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{ |
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return(clr[CIEY]); |
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} |
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|
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|
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double (*ourbright)() = rgb_bright; |
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|
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|
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init() /* perform final setup */ |
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{ |
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double l_colin(), l_expos(), l_ray(); |
312 |
register int i; |
313 |
/* define constants */ |
314 |
varset(vnfiles, ':', (double)nfiles); |
315 |
varset(vxmax, ':', (double)xmax); |
316 |
varset(vymax, ':', (double)ymax); |
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/* set functions */ |
318 |
for (i = 0; i < 3; i++) { |
319 |
funset(vcolexp[i], 1, ':', l_expos); |
320 |
funset(vcolin[i], 1, '=', l_colin); |
321 |
} |
322 |
funset(vbrtexp, 1, ':', l_expos); |
323 |
funset(vbrtin, 1, '=', l_colin); |
324 |
for (i = 0; i < 6; i++) |
325 |
funset(vray[i], 1, '=', l_ray); |
326 |
/* set brightness function */ |
327 |
if (!strcmp(ourfmt, CIEFMT)) |
328 |
ourbright = xyz_bright; |
329 |
} |
330 |
|
331 |
|
332 |
combine() /* combine pictures */ |
333 |
{ |
334 |
EPNODE *coldef[3], *brtdef; |
335 |
COLOR *scanout; |
336 |
double d; |
337 |
register int i, j; |
338 |
/* check defined variables */ |
339 |
for (j = 0; j < 3; j++) { |
340 |
if (vardefined(vcolout[j])) |
341 |
coldef[j] = eparse(vcolout[j]); |
342 |
else |
343 |
coldef[j] = NULL; |
344 |
} |
345 |
if (vardefined(vbrtout)) |
346 |
brtdef = eparse(vbrtout); |
347 |
else |
348 |
brtdef = NULL; |
349 |
/* allocate scanline */ |
350 |
scanout = (COLOR *)emalloc(xres*sizeof(COLOR)); |
351 |
/* set input position */ |
352 |
yscan = ymax+MIDSCN; |
353 |
/* combine files */ |
354 |
for (ypos = yres-1; ypos >= 0; ypos--) { |
355 |
advance(); |
356 |
varset(vypos, '=', (double)ypos); |
357 |
for (xpos = 0; xpos < xres; xpos++) { |
358 |
xscan = (long)xpos*xmax/xres; |
359 |
varset(vxpos, '=', (double)xpos); |
360 |
eclock++; |
361 |
if (brtdef != NULL) { |
362 |
d = evalue(brtdef); |
363 |
if (d < 0.0) |
364 |
d = 0.0; |
365 |
setcolor(scanout[xpos], d, d, d); |
366 |
} else { |
367 |
for (j = 0; j < 3; j++) { |
368 |
if (coldef[j] != NULL) { |
369 |
d = evalue(coldef[j]); |
370 |
} else { |
371 |
d = 0.0; |
372 |
for (i = 0; i < nfiles; i++) |
373 |
d += colval(input[i].scan[MIDSCN][xscan],j); |
374 |
} |
375 |
if (d < 0.0) |
376 |
d = 0.0; |
377 |
colval(scanout[xpos],j) = d; |
378 |
} |
379 |
} |
380 |
} |
381 |
if (fwritescan(scanout, xres, stdout) < 0) { |
382 |
perror("write error"); |
383 |
quit(1); |
384 |
} |
385 |
} |
386 |
efree(scanout); |
387 |
} |
388 |
|
389 |
|
390 |
advance() /* read in data for next scanline */ |
391 |
{ |
392 |
int ytarget; |
393 |
register COLOR *st; |
394 |
register int i, j; |
395 |
|
396 |
for (ytarget = (long)ypos*ymax/yres; yscan > ytarget; yscan--) |
397 |
for (i = 0; i < nfiles; i++) { |
398 |
st = input[i].scan[WINSIZ-1]; |
399 |
for (j = WINSIZ-1; j > 0; j--) /* rotate window */ |
400 |
input[i].scan[j] = input[i].scan[j-1]; |
401 |
input[i].scan[0] = st; |
402 |
if (yscan <= MIDSCN) /* hit bottom? */ |
403 |
continue; |
404 |
if (freadscan(st, xmax, input[i].fp) < 0) { /* read */ |
405 |
eputs(input[i].name); |
406 |
eputs(": read error\n"); |
407 |
quit(1); |
408 |
} |
409 |
if (fabs(colval(input[i].coef,RED)-1.0) > 1e-3 || |
410 |
fabs(colval(input[i].coef,GRN)-1.0) > 1e-3 || |
411 |
fabs(colval(input[i].coef,BLU)-1.0) > 1e-3) |
412 |
for (j = 0; j < xmax; j++) /* adjust color */ |
413 |
multcolor(st[j], input[i].coef); |
414 |
} |
415 |
} |
416 |
|
417 |
|
418 |
double |
419 |
l_expos(nam) /* return picture exposure */ |
420 |
register char *nam; |
421 |
{ |
422 |
register int fn, n; |
423 |
|
424 |
fn = argument(1) - .5; |
425 |
if (fn < 0 || fn >= nfiles) |
426 |
return(1.0); |
427 |
if (nam == vbrtexp) |
428 |
return((*ourbright)(input[fn].expos)); |
429 |
n = 3; |
430 |
while (n--) |
431 |
if (nam == vcolexp[n]) |
432 |
return(colval(input[fn].expos,n)); |
433 |
eputs("Bad call to l_expos()!\n"); |
434 |
quit(1); |
435 |
} |
436 |
|
437 |
|
438 |
double |
439 |
l_colin(nam) /* return color value for picture */ |
440 |
register char *nam; |
441 |
{ |
442 |
int fn; |
443 |
register int n, xoff, yoff; |
444 |
double d; |
445 |
|
446 |
d = argument(1); |
447 |
if (d > -.5 && d < .5) |
448 |
return((double)nfiles); |
449 |
fn = d - .5; |
450 |
if (fn < 0 || fn >= nfiles) { |
451 |
errno = EDOM; |
452 |
return(0.0); |
453 |
} |
454 |
xoff = yoff = 0; |
455 |
n = nargum(); |
456 |
if (n >= 2) { |
457 |
d = argument(2); |
458 |
if (d < 0.0) { |
459 |
xoff = d-.5; |
460 |
if (xscan+xoff < 0) |
461 |
xoff = -xscan; |
462 |
} else { |
463 |
xoff = d+.5; |
464 |
if (xscan+xoff >= xmax) |
465 |
xoff = xmax-1-xscan; |
466 |
} |
467 |
} |
468 |
if (n >= 3) { |
469 |
d = argument(3); |
470 |
if (d < 0.0) { |
471 |
yoff = d-.5; |
472 |
if (yoff+MIDSCN < 0) |
473 |
yoff = -MIDSCN; |
474 |
if (yscan+yoff < 0) |
475 |
yoff = -yscan; |
476 |
} else { |
477 |
yoff = d+.5; |
478 |
if (yoff+MIDSCN >= WINSIZ) |
479 |
yoff = WINSIZ-1-MIDSCN; |
480 |
if (yscan+yoff >= ymax) |
481 |
yoff = ymax-1-yscan; |
482 |
} |
483 |
} |
484 |
if (nam == vbrtin) |
485 |
return((*ourbright)(input[fn].scan[MIDSCN+yoff][xscan+xoff])); |
486 |
n = 3; |
487 |
while (n--) |
488 |
if (nam == vcolin[n]) |
489 |
return(colval(input[fn].scan[MIDSCN+yoff][xscan+xoff],n)); |
490 |
eputs("Bad call to l_colin()!\n"); |
491 |
quit(1); |
492 |
} |
493 |
|
494 |
|
495 |
double |
496 |
l_ray(nam) /* return ray origin or direction */ |
497 |
register char *nam; |
498 |
{ |
499 |
static unsigned long ltick[MAXINP]; |
500 |
static FVECT lorg[MAXINP], ldir[MAXINP]; |
501 |
FLOAT loc[2]; |
502 |
double d; |
503 |
int fn; |
504 |
register int i; |
505 |
|
506 |
d = argument(1); |
507 |
if (d > -.5 && d < .5) |
508 |
return((double)nfiles); |
509 |
fn = d - .5; |
510 |
if (fn < 0 || fn >= nfiles) { |
511 |
errno = EDOM; |
512 |
return(0.0); |
513 |
} |
514 |
if (ltick[fn] < eclock) { /* need to compute? */ |
515 |
lorg[fn][0] = lorg[fn][1] = lorg[fn][2] = 0.0; |
516 |
ldir[fn][0] = ldir[fn][1] = ldir[fn][2] = 0.0; |
517 |
if (input[fn].vw.type == 0) |
518 |
errno = EDOM; |
519 |
else { |
520 |
pix2loc(loc, &input[fn].rs, xscan, ymax-1-yscan); |
521 |
if (viewray(lorg[fn], ldir[fn], |
522 |
&input[fn].vw, loc[0], loc[1]) < 0) |
523 |
errno = ERANGE; |
524 |
} |
525 |
ltick[fn] = eclock; |
526 |
} |
527 |
i = 6; |
528 |
while (i--) |
529 |
if (nam == vray[i]) |
530 |
return(i < 3 ? lorg[fn][i] : ldir[fn][i-3]); |
531 |
eputs("Bad call to l_ray()!\n"); |
532 |
quit(1); |
533 |
} |
534 |
|
535 |
|
536 |
wputs(msg) |
537 |
char *msg; |
538 |
{ |
539 |
if (!nowarn) |
540 |
eputs(msg); |
541 |
} |
542 |
|
543 |
|
544 |
eputs(msg) |
545 |
char *msg; |
546 |
{ |
547 |
fputs(msg, stderr); |
548 |
} |
549 |
|
550 |
|
551 |
quit(code) /* exit gracefully */ |
552 |
int code; |
553 |
{ |
554 |
register int i; |
555 |
/* close input files */ |
556 |
for (i = 0; i < nfiles; i++) |
557 |
if (input[i].name == Command) |
558 |
pclose(input[i].fp); |
559 |
else |
560 |
fclose(input[i].fp); |
561 |
exit(code); |
562 |
} |