| 1 |
/* Copyright (c) 1988 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* Send pictures to PC animation system. |
| 9 |
* |
| 10 |
* 6/20/88 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include <stdio.h> |
| 14 |
#include <rasterfile.h> |
| 15 |
|
| 16 |
#include "random.h" |
| 17 |
#include "color.h" |
| 18 |
#include "clntrpc.h" |
| 19 |
#include "scan.h" |
| 20 |
|
| 21 |
#define GAMMA 2.0 /* gamma correction factor */ |
| 22 |
|
| 23 |
BYTE gammamap[256]; /* gamma correction table */ |
| 24 |
|
| 25 |
|
| 26 |
main(argc, argv) |
| 27 |
int argc; |
| 28 |
char *argv[]; |
| 29 |
{ |
| 30 |
char *progname; |
| 31 |
int nframes; |
| 32 |
int port = PCPROGRAM; |
| 33 |
/* initialize */ |
| 34 |
compgamma(); |
| 35 |
for (progname = *argv++; --argc; argv++) |
| 36 |
if (!strcmp(*argv, "-p") && argv[1]) { |
| 37 |
port = atoi(*++argv); argc--; |
| 38 |
} else |
| 39 |
break; |
| 40 |
if (!argc) { |
| 41 |
fputs("Usage: ", stderr); |
| 42 |
fputs(progname, stderr); |
| 43 |
fputs(" [-p port] hostname [-c copies][-r record] [frame] ..\n", |
| 44 |
stderr); |
| 45 |
exit(1); |
| 46 |
} |
| 47 |
scry_open(*argv++, TCP, port); |
| 48 |
scry_set_compress(NONE); |
| 49 |
scry_set_image(TARGA_IMAGE); |
| 50 |
scry_set_record(PREVIEW); |
| 51 |
scry_set_copy_num(3); |
| 52 |
/* send frames */ |
| 53 |
nframes = 0; |
| 54 |
for ( ; --argc; argv++) |
| 55 |
if (!strcmp(*argv, "-r") && argv[1]) { |
| 56 |
scry_set_record(atoi(*++argv)); argc--; |
| 57 |
} else if (!strcmp(*argv, "-c") && argv[1]) { |
| 58 |
scry_set_copy_num(atoi(*++argv)); argc--; |
| 59 |
} else { |
| 60 |
sendframe(*argv); |
| 61 |
nframes++; |
| 62 |
} |
| 63 |
if (nframes == 0) /* get stdin */ |
| 64 |
sendframe(NULL); |
| 65 |
/* clean up */ |
| 66 |
scry_close(); |
| 67 |
exit(0); |
| 68 |
} |
| 69 |
|
| 70 |
|
| 71 |
sendframe(file) /* convert and send a frame */ |
| 72 |
char *file; |
| 73 |
{ |
| 74 |
COLR scanin[SCANLINE]; |
| 75 |
int xres, yres; |
| 76 |
int xbeg, ybeg; |
| 77 |
FILE *fp; |
| 78 |
int j; |
| 79 |
register int k, c; |
| 80 |
register BYTE *in; |
| 81 |
short *out; |
| 82 |
/* open file */ |
| 83 |
if (file == NULL) { |
| 84 |
fp = stdin; |
| 85 |
file = "<stdin>"; |
| 86 |
} else if ((fp = fopen(file, "r")) == NULL) { |
| 87 |
perror(file); |
| 88 |
exit(1); |
| 89 |
} |
| 90 |
/* get dimensions */ |
| 91 |
getheader(fp, NULL); |
| 92 |
if (fscanf(fp, "-Y %d +X %d\n", &yres, &xres) != 2 || |
| 93 |
xres > SCANLINE || yres > NUMSCANS) { |
| 94 |
fputs(file, stderr); |
| 95 |
fputs(": bad picture size\n", stderr); |
| 96 |
exit(1); |
| 97 |
} |
| 98 |
/* compute center */ |
| 99 |
xbeg = (SCANLINE-xres)/2; |
| 100 |
ybeg = (NUMSCANS-yres)/2; |
| 101 |
/* clear output */ |
| 102 |
bzero(sc_frame_arr, sizeof(sc_frame_arr)); |
| 103 |
/* get frame */ |
| 104 |
for (j = yres-1; j >= 0; j--) { |
| 105 |
if (freadcolrs(scanin, xres, fp) < 0) { |
| 106 |
fputs(file, stderr); |
| 107 |
fputs(": read error\n", stderr); |
| 108 |
exit(1); |
| 109 |
} |
| 110 |
for (in = scanin[0], out = sc_frame_arr[ybeg+j]+xbeg; |
| 111 |
in < scanin[xres]; in += 4, out++) { |
| 112 |
k = in[EXP] - COLXS; |
| 113 |
if (k >= 8) { |
| 114 |
in[RED] = |
| 115 |
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 |
} |
| 136 |
} |
| 137 |
/* send frame */ |
| 138 |
scry_send_frame(); |
| 139 |
/* close file */ |
| 140 |
fclose(fp); |
| 141 |
} |
| 142 |
|
| 143 |
|
| 144 |
compgamma() /* compute gamma correction map */ |
| 145 |
{ |
| 146 |
extern double pow(); |
| 147 |
register int i, val; |
| 148 |
|
| 149 |
for (i = 0; i < 256; i++) { |
| 150 |
val = pow(i/256.0, 1.0/GAMMA) * 256.0; |
| 151 |
if (val > 248) val = 248; |
| 152 |
gammamap[i] = val; |
| 153 |
} |
| 154 |
} |
