| 11 |
|
*/ |
| 12 |
|
|
| 13 |
|
#include <stdio.h> |
| 14 |
– |
#include <rasterfile.h> |
| 14 |
|
|
| 15 |
|
#include "random.h" |
| 16 |
|
#include "color.h" |
| 19 |
|
|
| 20 |
|
#define GAMMA 2.0 /* gamma correction factor */ |
| 21 |
|
|
| 22 |
+ |
FILE *popen(); |
| 23 |
+ |
|
| 24 |
+ |
char *pcom = NULL; /* pipe command */ |
| 25 |
+ |
|
| 26 |
|
BYTE gammamap[256]; /* gamma correction table */ |
| 27 |
|
|
| 28 |
|
|
| 38 |
|
for (progname = *argv++; --argc; argv++) |
| 39 |
|
if (!strcmp(*argv, "-p") && argv[1]) { |
| 40 |
|
port = atoi(*++argv); argc--; |
| 41 |
+ |
} else if (!strcmp(*argv, "-u") && argv[1]) { |
| 42 |
+ |
pcom = *++argv; argc--; |
| 43 |
|
} else |
| 44 |
|
break; |
| 45 |
|
if (!argc) { |
| 46 |
|
fputs("Usage: ", stderr); |
| 47 |
|
fputs(progname, stderr); |
| 48 |
< |
fputs(" [-p port] hostname [-c copies][-r record] [frame] ..\n", |
| 48 |
> |
fputs(" [-p port] [-u uncompress] hostname [-c copies][-r record] [frame] ..\n", |
| 49 |
|
stderr); |
| 50 |
|
exit(1); |
| 51 |
|
} |
| 76 |
|
sendframe(file) /* convert and send a frame */ |
| 77 |
|
char *file; |
| 78 |
|
{ |
| 79 |
+ |
char command[128]; |
| 80 |
|
COLR scanin[SCANLINE]; |
| 81 |
|
int xres, yres; |
| 82 |
|
int xbeg, ybeg; |
| 83 |
|
FILE *fp; |
| 84 |
< |
int j; |
| 85 |
< |
register int k, c; |
| 80 |
< |
register BYTE *in; |
| 81 |
< |
short *out; |
| 84 |
> |
int y; |
| 85 |
> |
register int x; |
| 86 |
|
/* open file */ |
| 87 |
|
if (file == NULL) { |
| 88 |
< |
fp = stdin; |
| 88 |
> |
if (pcom != NULL) |
| 89 |
> |
fp = popen(pcom, "r"); |
| 90 |
> |
else |
| 91 |
> |
fp = stdin; |
| 92 |
|
file = "<stdin>"; |
| 93 |
< |
} else if ((fp = fopen(file, "r")) == NULL) { |
| 93 |
> |
} else { |
| 94 |
> |
if (pcom != NULL) { |
| 95 |
> |
sprintf(command, "( %s ) < %s", pcom, file); |
| 96 |
> |
fp = popen(command, "r"); |
| 97 |
> |
} else |
| 98 |
> |
fp = fopen(file, "r"); |
| 99 |
> |
} |
| 100 |
> |
if (fp == NULL) { |
| 101 |
|
perror(file); |
| 102 |
|
exit(1); |
| 103 |
|
} |
| 104 |
|
/* get dimensions */ |
| 105 |
|
getheader(fp, NULL); |
| 106 |
+ |
if (checkheader(fp, COLRFMT, NULL) < 0) { |
| 107 |
+ |
fputs(file, stderr); |
| 108 |
+ |
fputs(": not a Radiance picture\n", stderr); |
| 109 |
+ |
exit(1); |
| 110 |
+ |
} |
| 111 |
|
if (fgetresolu(&xres, &yres, fp) != (YMAJOR|YDECR) || |
| 112 |
|
xres > SCANLINE || yres > NUMSCANS) { |
| 113 |
|
fputs(file, stderr); |
| 120 |
|
/* clear output */ |
| 121 |
|
bzero(sc_frame_arr, sizeof(sc_frame_arr)); |
| 122 |
|
/* get frame */ |
| 123 |
< |
for (j = yres-1; j >= 0; j--) { |
| 123 |
> |
for (y = yres-1; y >= 0; y--) { |
| 124 |
|
if (freadcolrs(scanin, xres, fp) < 0) { |
| 125 |
|
fputs(file, stderr); |
| 126 |
|
fputs(": read error\n", stderr); |
| 127 |
|
exit(1); |
| 128 |
|
} |
| 129 |
< |
for (in = scanin[0], out = sc_frame_arr[ybeg+j]+xbeg; |
| 130 |
< |
in < scanin[xres]; in += 4, out++) { |
| 131 |
< |
k = in[EXP] - COLXS; |
| 132 |
< |
if (k >= 8) { |
| 133 |
< |
in[RED] = |
| 134 |
< |
in[GRN] = |
| 116 |
< |
in[BLU] = 255; |
| 117 |
< |
} else if (k <= -8) { |
| 118 |
< |
in[RED] = |
| 119 |
< |
in[GRN] = |
| 120 |
< |
in[BLU] = 0; |
| 121 |
< |
} else if (k > 0) { |
| 122 |
< |
c = in[RED] << k; |
| 123 |
< |
in[RED] = c > 255 ? 255 : c; |
| 124 |
< |
c = in[GRN] << k; |
| 125 |
< |
in[GRN] = c > 255 ? 255 : c; |
| 126 |
< |
c = in[BLU] << k; |
| 127 |
< |
in[BLU] = c > 255 ? 255 : c; |
| 128 |
< |
} else if (k < 0) { |
| 129 |
< |
in[RED] = in[RED] >> -k; |
| 130 |
< |
in[GRN] = in[GRN] >> -k; |
| 131 |
< |
in[BLU] = in[BLU] >> -k; |
| 132 |
< |
} |
| 133 |
< |
for (k = 0; k < 3; k++) |
| 134 |
< |
*out = *out<<5 | (gammamap[in[k]]+(random()&0x7))>>3; |
| 135 |
< |
} |
| 129 |
> |
normcolrs(scanin, xres, 0); /* normalize */ |
| 130 |
> |
for (x = 0; x < xres; x++) /* convert */ |
| 131 |
> |
sc_frame_arr[y+ybeg][x+xbeg] = |
| 132 |
> |
((gammamap[scanin[x][RED]]+(random()&7))&0xf8)<<7 |
| 133 |
> |
| ((gammamap[scanin[x][GRN]]+(random()&7))&0xf8)<<2 |
| 134 |
> |
| (gammamap[scanin[x][BLU]]+(random()&7))>>3; |
| 135 |
|
} |
| 136 |
|
/* send frame */ |
| 137 |
|
scry_send_frame(); |
| 138 |
|
/* close file */ |
| 139 |
< |
fclose(fp); |
| 139 |
> |
if (pcom != NULL) |
| 140 |
> |
pclose(fp); |
| 141 |
> |
else |
| 142 |
> |
fclose(fp); |
| 143 |
|
} |
| 144 |
|
|
| 145 |
|
|
| 149 |
|
register int i, val; |
| 150 |
|
|
| 151 |
|
for (i = 0; i < 256; i++) { |
| 152 |
< |
val = pow(i/256.0, 1.0/GAMMA) * 256.0; |
| 152 |
> |
val = pow((i+0.5)/256.0, 1.0/GAMMA) * 256.0; |
| 153 |
|
if (val > 248) val = 248; |
| 154 |
|
gammamap[i] = val; |
| 155 |
|
} |
