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#ifndef lint
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static const char RCSid[] = "$Id: panim.c,v 2.6 2004/01/02 10:25:13 schorsch Exp $";
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#endif
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/*
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* Send pictures to PC animation system.
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*
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* 6/20/88
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*/
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#include <stdio.h>
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#include <string.h>
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#include "rtprocess.h"
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#include "random.h"
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#include "color.h"
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#include "clntrpc.h"
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#include "scan.h"
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#define GAMMA 2.0 /* gamma correction factor */
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char *pcom = NULL; /* pipe command */
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BYTE gammamap[256]; /* gamma correction table */
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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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char *progname;
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int nframes;
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int port = PCPROGRAM;
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/* initialize */
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compgamma();
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for (progname = *argv++; --argc; argv++)
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if (!strcmp(*argv, "-p") && argv[1]) {
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port = atoi(*++argv); argc--;
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} else if (!strcmp(*argv, "-u") && argv[1]) {
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pcom = *++argv; argc--;
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} else
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break;
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if (!argc) {
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fputs("Usage: ", stderr);
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fputs(progname, stderr);
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fputs(" [-p port] [-u uncompress] hostname [-c copies][-r record] [frame] ..\n",
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stderr);
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exit(1);
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}
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scry_open(*argv++, TCP, port);
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scry_set_compress(NONE);
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scry_set_image(TARGA_IMAGE);
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scry_set_record(PREVIEW);
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scry_set_copy_num(3);
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/* send frames */
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nframes = 0;
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for ( ; --argc; argv++)
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if (!strcmp(*argv, "-r") && argv[1]) {
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scry_set_record(atoi(*++argv)); argc--;
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} else if (!strcmp(*argv, "-c") && argv[1]) {
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scry_set_copy_num(atoi(*++argv)); argc--;
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} else {
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sendframe(*argv);
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nframes++;
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}
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if (nframes == 0) /* get stdin */
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sendframe(NULL);
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/* clean up */
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scry_close();
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exit(0);
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}
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sendframe(file) /* convert and send a frame */
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char *file;
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{
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char command[PATH_MAX];
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COLR scanin[SCANLINE];
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int xres, yres;
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int xbeg, ybeg;
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FILE *fp;
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int y;
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register int x;
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/* open file */
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if (file == NULL) {
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if (pcom != NULL)
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fp = popen(pcom, "r");
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else
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fp = stdin;
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file = "<stdin>";
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} else {
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if (pcom != NULL) {
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sprintf(command, "( %s ) < \"%s\"", pcom, file);
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fp = popen(command, "r");
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} else
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fp = fopen(file, "r");
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}
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if (fp == NULL) {
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perror(file);
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exit(1);
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}
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/* get dimensions */
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getheader(fp, NULL, NULL);
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if (checkheader(fp, COLRFMT, NULL) < 0) {
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fputs(file, stderr);
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fputs(": not a Radiance picture\n", stderr);
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exit(1);
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}
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if (fgetresolu(&xres, &yres, fp) != (YMAJOR|YDECR) ||
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xres > SCANLINE || yres > NUMSCANS) {
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fputs(file, stderr);
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fputs(": bad picture size\n", stderr);
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exit(1);
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}
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/* compute center */
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xbeg = (SCANLINE-xres)/2;
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ybeg = (NUMSCANS-yres)/2;
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/* clear output */
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memset(sc_frame_arr, '\0', sizeof(sc_frame_arr));
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/* get frame */
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for (y = yres-1; y >= 0; y--) {
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if (freadcolrs(scanin, xres, fp) < 0) {
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fputs(file, stderr);
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fputs(": read error\n", stderr);
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exit(1);
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}
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normcolrs(scanin, xres, 0); /* normalize */
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for (x = 0; x < xres; x++) /* convert */
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sc_frame_arr[y+ybeg][x+xbeg] =
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((gammamap[scanin[x][RED]]+(random()&7))&0xf8)<<7
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| ((gammamap[scanin[x][GRN]]+(random()&7))&0xf8)<<2
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| (gammamap[scanin[x][BLU]]+(random()&7))>>3;
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}
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/* send frame */
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scry_send_frame();
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/* close file */
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if (pcom != NULL)
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pclose(fp);
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else
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fclose(fp);
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}
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compgamma() /* compute gamma correction map */
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{
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extern double pow();
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register int i, val;
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for (i = 0; i < 256; i++) {
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val = pow((i+0.5)/256.0, 1.0/GAMMA) * 256.0;
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if (val > 248) val = 248;
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gammamap[i] = val;
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}
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}
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