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/* $Id: smode2.c,v 5.12 2003/03/30 12:26:44 lirc Exp $ */
/****************************************************************************
** smode2.c ****************************************************************
****************************************************************************
*
* smode2 - shows the ir waveform of an IR signal
*
* Copyright (C) 1998.11.18 Sinkovics Zoltan <sinko@szarvas.hu>
*
* This program is based on the mode2.c file which is a part of the
* LIRC distribution. The main purpose of this program is to check
* operation of LIRC receiver hardware, and to see the IR waveform of
* the remote controller without an expensive oscilloscope. The time
* division is variable from 1 ms/div to extremely high values (integer
* type) but there is no point increasing this value above 20 ms/div,
* because one pulse is about 1 ms. I think this kind of presentation
* is much more exciting than the simple pulse&space output showed by
* mode2.
*
* Usage: smode2 [-t (ms/div)] , default division is 5 ms/div
* */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <getopt.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <vga.h>
#include <vgagl.h>
#include "drivers/lirc.h"
GraphicsContext *screen;
GraphicsContext *physicalscreen;
GraphicsContext *backscreen;
void initscreen(void)
{
int vgamode;
vga_init();
vgamode = G640x480x16;
if (!vga_hasmode(vgamode)) {
printf("Mode not available.\n");
exit(-1);
}
vga_setmode(vgamode);
/* Create virtual screen. */
gl_setcontextvgavirtual(vgamode);
backscreen = gl_allocatecontext();
gl_getcontext(backscreen);
/* Physical screen context. */
vga_setmode(vgamode);
gl_setcontextvga(vgamode);
physicalscreen = gl_allocatecontext();
gl_getcontext(physicalscreen);
gl_setcontext(backscreen);
/*drawgraypalette(); */
gl_clearscreen(0);
// gl_setcontextvga(vgamode);
gl_enableclipping();
gl_setclippingwindow(0, 0, 639, 479);
gl_setwritemode(WRITEMODE_OVERWRITE | FONT_COMPRESSED);
gl_setfont(8, 8, gl_font8x8);
gl_setfontcolors(0, 1);
}
void closescreen(void)
{
vga_setmode(TEXT);
}
int main(int argc, char **argv)
{
int fd;
__u32 mode;
lirc_t data;
lirc_t x1, y1, x2, y2;
int result;
int c = 10;
char textbuffer[80];
int div = 5;
char *device = LIRC_DRIVER_DEVICE;
char *progname;
struct stat s;
progname = "smode2";
while (1) {
int c;
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{"device", required_argument, NULL, 'd'},
{"timediv", required_argument, NULL, 't'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "hvd:t:", long_options, NULL);
if (c == -1)
break;
switch (c) {
case 'h':
printf("Usage: %s [options]\n", progname);
printf("\t -h --help\t\tdisplay usage summary\n");
printf("\t -v --version\t\tdisplay version\n");
printf("\t -d --device=device\tread from given device\n");
printf("\t -t --timediv=value\tms per unit\n");
return (EXIT_SUCCESS);
case 'v':
printf("%s %s\n", progname, VERSION);
return (EXIT_SUCCESS);
case 'd':
device = optarg;
break;
case 't': /* timediv */
div = strtol(optarg, NULL, 10);
break;
default:
printf("Usage: %s [options]\n", progname);
return (EXIT_FAILURE);
}
}
if (optind < argc - 1) {
fprintf(stderr, "%s: too many arguments\n", progname);
return (EXIT_FAILURE);
}
fd = open(device, O_RDONLY);
if (fd == -1) {
perror(progname);
fprintf(stderr, "%s: error opening %s\n", progname, device);
exit(EXIT_FAILURE);
};
if ((fstat(fd, &s) != -1) && (S_ISFIFO(s.st_mode))) {
/* can't do ioctls on a pipe */
} else if (ioctl(fd, LIRC_GET_REC_MODE, &mode) == -1 || mode != LIRC_MODE_MODE2) {
printf("This program is only intended for receivers supporting the pulse/space layer.\n");
printf("Note that this is no error, but this program simply makes no sense for your\nreceiver.\n");
printf("In order to test your setup run lircd with the "
"--nodaemon option and \n" "then check if the remote works with the irw tool.\n");
close(fd);
exit(EXIT_FAILURE);
}
initscreen();
y1 = 20;
x1 = x2 = 0;
for (y2 = 0; y2 < 640; y2 += 20)
gl_line(y2, 0, y2, 480, 1);
sprintf(textbuffer, "%d ms/unit", div);
gl_write(500, 10, textbuffer);
gl_copyscreen(physicalscreen);
while (1) {
result = read(fd, &data, sizeof(data));
if (result == sizeof(data)) {
// printf("%.8lx\t",(unsigned long) data);
x2 = (data & PULSE_MASK) / (div * 50);
if (x2 > 400) {
y1 += 15;
x1 = 0;
gl_copyscreen(physicalscreen);
} else {
if (x1 < 640) {
gl_line(x1, ((data & PULSE_BIT) ? y1 : y1 + 10), x1 + x2,
((data & PULSE_BIT) ? y1 : y1 + 10), c);
x1 += x2;
gl_line(x1, ((data & PULSE_BIT) ? y1 : y1 + 10), x1,
((data & PULSE_BIT) ? y1 + 10 : y1), c);
}
}
if (y1 > 480) {
y1 = 20;
gl_clearscreen(0);
for (y2 = 0; y2 < 640; y2 += 10)
gl_line(y2, 0, y2, 480, 1);
gl_write(500, 10, textbuffer);
}
}
// gl_copyscreen(physicalscreen);
};
closescreen();
exit(EXIT_SUCCESS);
}
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