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cam: Allow time for CA to initialize

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Some devices take some time to initialize, and until they are they
will error out when trying to get information about the CA device.
This commit is contained in:
Edward Hervey 2012-06-29 18:04:04 +02:00
parent 25cb359ddb
commit 7a72c961de
1 changed files with 22 additions and 7 deletions
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29
sys/dvb/camdevice.c
View file

@ -104,6 +104,7 @@ cam_device_open (CamDevice * device, const char *filename)
ca_caps_t ca_caps;
int ret;
int i;
int count = 10;
g_return_val_if_fail (device != NULL, FALSE);
g_return_val_if_fail (device->state == CAM_DEVICE_STATE_CLOSED, FALSE);
@ -117,17 +118,31 @@ cam_device_open (CamDevice * device, const char *filename)
return FALSE;
}
GST_DEBUG ("Successfully opened device %s", filename);
device->fd = ret;
ret = ioctl (device->fd, CA_RESET);
sleep (1);
/* get the capabilities of the CA */
ret = ioctl (device->fd, CA_GET_CAP, &ca_caps);
if (ret == -1) {
GST_ERROR ("CA_GET_CAP ioctl failed: %s", strerror (errno));
reset_state (device);
return FALSE;
g_usleep (G_USEC_PER_SEC / 10);
while (TRUE) {
/* get the capabilities of the CA */
ret = ioctl (device->fd, CA_GET_CAP, &ca_caps);
if (ret == -1) {
GST_ERROR ("CA_GET_CAP ioctl failed: %s", strerror (errno));
reset_state (device);
return FALSE;
}
if (ca_caps.slot_num > 0)
break;
if (!count) {
GST_ERROR ("CA_GET_CAP succeeded but not slots");
reset_state (device);
return FALSE;
}
count--;
g_usleep (G_USEC_PER_SEC / 5);
}
device->tl = cam_tl_new (device->fd);