static void
mainloop (void)
{
struct timeval timeout;
vbi_capture_buffer *sliced_buffer;
unsigned int n_frames;
/* Don't wait more than two seconds for the driver
to return data. */
timeout.tv_sec = 2;
timeout.tv_usec = 0;
/* Should receive a CNI within two seconds,
call sign within ten seconds(?). */
if (services & VBI_SLICED_CAPTION_525)
n_frames = 11 * 30;
else
n_frames = 3 * 25;
for (; n_frames > 0; --n_frames) {
unsigned int n_lines;
int r;
r = vbi_capture_pull (cap,
/* raw_buffer */ NULL,
&sliced_buffer,
&timeout);
switch (r) {
case -1:
fprintf (stderr, "VBI read error %d (%s)\n",
errno, strerror (errno));
/* Could be ignored, esp. EIO with some drivers. */
exit (EXIT_FAILURE);
case 0:
fprintf (stderr, "VBI read timeout\n");
exit (EXIT_FAILURE);
case 1: /* success */
break;
default:
assert (0);
}
n_lines = sliced_buffer->size / sizeof (vbi_sliced);
vbi_decode (dec,
(vbi_sliced *) sliced_buffer->data,
n_lines,
sliced_buffer->timestamp);
if (quit)
return;
}
printf ("No network ID received or network unknown.\n");
}
static void
mainloop (void)
{
struct timeval timeout;
/* Don't wait more than two seconds for the driver
to return data. */
timeout.tv_sec = 2;
timeout.tv_usec = 0;
for (;;) {
vbi_capture_buffer *sliced_buffer;
unsigned int n_lines;
int r;
r = vbi_capture_pull (cap,
/* raw_buffer */ NULL,
&sliced_buffer,
&timeout);
switch (r) {
case -1:
fprintf (stderr, "VBI read error %d (%s)\n",
errno, strerror (errno));
/* Could be ignored, esp. EIO with some drivers. */
exit (EXIT_FAILURE);
case 0:
fprintf (stderr, "VBI read timeout\n");
exit (EXIT_FAILURE);
case 1: /* success */
break;
default:
assert (0);
}
n_lines = sliced_buffer->size / sizeof (vbi_sliced);
vbi_decode (dec,
(vbi_sliced *) sliced_buffer->data,
n_lines,
sliced_buffer->timestamp);
}
}
