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Diffstat (limited to 'misc/autocue/files/autocue.c')
| -rw-r--r-- | misc/autocue/files/autocue.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/misc/autocue/files/autocue.c b/misc/autocue/files/autocue.c new file mode 100644 index 00000000000..238d466a64e --- /dev/null +++ b/misc/autocue/files/autocue.c @@ -0,0 +1,158 @@ +/* $NetBSD: autocue.c,v 1.1.1.1 2006/01/28 20:47:22 agc Exp $ */ + +/* + * Copyright © 2006 Alistair Crooks. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include <sys/cdefs.h> + +#ifndef lint +__COPYRIGHT("@(#) Copyright © 2006 \ + The NetBSD Foundation, Inc. All rights reserved."); +__RCSID("$NetBSD: autocue.c,v 1.1.1.1 2006/01/28 20:47:22 agc Exp $"); +#endif + +#include <err.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +/* symbolic constants */ +enum { + MaxCutBuffers = 4, + + FmtGoal = 50, + FmtMax = 55, + + SlowDenom = 3, + MediumDenom = 7, + FastDenom = 10 +}; + +static int speed; + +/* send process a USR1 to make the display go faster */ +static void +sigusr1(int s) +{ + printf("moving from speed %d to %d (faster)\n", speed, speed + 1); + speed += 1; +} + +/* send process a USR2 to make the display go slower */ +static void +sigusr2(int s) +{ + printf("moving from speed %d to %d (slower)\n", speed, speed - 1); + speed -= 1; +} + +/* show the contents of the buffer `buf', which is `cc' chars long */ +/* maxcut is the number of xcb cut buffers you have displayed */ +/* speed is a numeric value for the number of seconds denominator */ +static void +showbuffer(char *buf, int cc, int maxcut) +{ + static int cut; + char cmd[BUFSIZ]; + FILE *pp; + int s; + + (void) snprintf(cmd, sizeof(cmd), "fmt %d %d | xcb -s %d", FmtGoal, FmtMax, cut); + if ((pp = popen(cmd, "w")) == NULL) { + errx(EXIT_FAILURE, "can't open pipe to xcb"); + } + buf[cc] = 0x0; + (void) fprintf(pp, "%s", buf); + (void) pclose(pp); + s = cc / speed; + printf("%.20s...\nBuffer contents are in cut buffer %d, sleeping %d secs\a\n", buf, cut, s); + while ((s = sleep(s)) > 0) { + } + cut = (cut + 1) % maxcut; +} + +int +main(int argc, char **argv) +{ + char buf[BUFSIZ * 20]; + char line[BUFSIZ]; + FILE *fp; + int maxcut; + int cc; + int c; + int i; + + maxcut = MaxCutBuffers; + speed = SlowDenom; + signal(SIGUSR1, sigusr1); + signal(SIGUSR2, sigusr2); + while ((i = getopt(argc, argv, "S:c:s:")) != -1) { + switch(i) { + case 'S': + speed = atoi(optarg); + break; + case 'c': + maxcut = atoi(optarg); + break; + case 's': + if (strcmp(optarg, "slow") == 0) { + speed = SlowDenom; + } else if (strcmp(optarg, "medium") == 0) { + speed = MediumDenom; + } else if (strcmp(optarg, "fast") == 0) { + speed = FastDenom; + } + break; + } + } + if (argc - optind < 1) { + errx(EXIT_FAILURE, "Usage: %s [-S numeric-speed] [-c max cut buffers] [-s speed] file", *argv); + } + if (speed == 0) { + err(EXIT_FAILURE, "Speed cannot be '0'"); + } + if (maxcut == 0) { + err(EXIT_FAILURE, "Maximum cut buffers cannot be '0'"); + } + if ((fp = fopen(argv[optind], "r")) == NULL) { + errx(EXIT_FAILURE, "can't open `%s'", argv[optind]); + } + printf("send this process - %d - a USR1 to make the display go faster, a USR2 to make it go slower\n", getpid()); + for (cc = 0 ; fgets(line, sizeof(line), fp) != NULL ; ) { + if (line[0] == '\n') { + showbuffer(buf, cc, maxcut); + cc = 0; + continue; + } + c = strlen(line); + (void) memcpy(&buf[cc], line, c); + cc += c; + } + exit(EXIT_SUCCESS); +} |