Commit e0c9b045 authored by Daniel Drake's avatar Daniel Drake

deviceprovider: fix counting number of times started

GstDeviceProvider has a started_count private variable counter,
and the gst_device_provider_start() documentation emphasizes the
importance of balancing the start and stop calls.

However, when starting a provider that is already started, the
current code will never increment the counter more than once.

So you start it twice, but it will have start_count 1, which is the
maximum value it will ever see.

Then when you stop it twice, on the 2nd stop, after decrementing the
counter in gst_device_provider_stop():

  else if (provider->priv->started_count < 1) {
    g_critical
        ("Trying to stop a GstDeviceProvider %s which is already stopped",
        GST_OBJECT_NAME (provider));

and the program is killed.

Fix this by incrementing the counter when starting a device provider that
was already started.
parent 20ee2db9
......@@ -454,6 +454,7 @@ gst_device_provider_start (GstDeviceProvider * provider)
g_mutex_lock (&provider->priv->start_lock);
if (provider->priv->started_count > 0) {
provider->priv->started_count++;
ret = TRUE;
goto started;
}
......
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