static void
gst_ks_video_device_close_current_pin (GstKsVideoDevice * self)
{
GstKsVideoDevicePrivate *priv = GST_KS_VIDEO_DEVICE_GET_PRIVATE (self);
if (!ks_is_valid_handle (priv->pin_handle))
return;
gst_ks_video_device_set_state (self, KSSTATE_STOP);
CloseHandle (priv->pin_handle);
priv->pin_handle = INVALID_HANDLE_VALUE;
}
/*
* Worker thread that takes care of starting, configuring and stopping things.
*
* This is needed because Logitech's driver software injects a DLL that
* intercepts API functions like NtCreateFile, NtClose, NtDeviceIoControlFile
* and NtDuplicateObject so that they can provide in-place video effects to
* existing applications. Their assumption is that at least one thread tainted
* by their code stays around for the lifetime of the capture.
*/
static gpointer
gst_ks_video_src_worker_func (gpointer data)
{
GstKsVideoSrc *self = data;
GstKsVideoSrcPrivate *priv = GST_KS_VIDEO_SRC_GET_PRIVATE (self);
if (!gst_ks_video_src_open_device (self))
goto open_failed;
KS_WORKER_LOCK (priv);
priv->worker_state = KS_WORKER_STATE_READY;
KS_WORKER_NOTIFY_RESULT (priv);
while (priv->worker_state != KS_WORKER_STATE_STOPPING) {
KS_WORKER_WAIT (priv);
if (priv->worker_pending_caps != NULL) {
priv->worker_setcaps_result =
gst_ks_video_device_set_caps (priv->device,
priv->worker_pending_caps);
priv->worker_pending_caps = NULL;
KS_WORKER_NOTIFY_RESULT (priv);
} else if (priv->worker_pending_run) {
if (priv->ksclock != NULL)
gst_ks_clock_start (priv->ksclock);
priv->worker_run_result = gst_ks_video_device_set_state (priv->device,
KSSTATE_RUN, &priv->worker_error_code);
priv->worker_pending_run = FALSE;
KS_WORKER_NOTIFY_RESULT (priv);
}
}
KS_WORKER_UNLOCK (priv);
gst_ks_video_src_close_device (self);
return NULL;
/* ERRORS */
open_failed:
{
KS_WORKER_LOCK (priv);
priv->worker_state = KS_WORKER_STATE_ERROR;
KS_WORKER_NOTIFY_RESULT (priv);
KS_WORKER_UNLOCK (priv);
return NULL;
}
}
