[gst-devel] GstMessage gets lost on the bus

[Mathis Hofer]

Hi folks

I'm writing a "trigger" plugin, that I use together with a GstController
to send messages at certain times to the bus.

My problem is that from time to time, some messages -- although they've
been successfully sent to the bus -- don't reach the application.


From the plugin the messages are sent like this:

structure = gst_structure_new ("trigger",
                               "state",
                               G_TYPE_INT,
                               g_value_get_int (value), NULL);
message = gst_message_new_element (GST_OBJECT (this), structure);
res = gst_element_post_message (GST_ELEMENT (this), message);


...and in the application's event loop I'm polling the bus like this:

while (1) {
    message = gst_bus_poll (bus, GST_MESSAGE_ANY, -1);

    switch (message->type) {

    case GST_MESSAGE_ELEMENT: {
        const GstStructure *s = gst_message_get_structure (message);
        const gchar *name = gst_structure_get_name (s);

        if (strcmp (name, "trigger") == 0) {
            int state = g_value_get_int (gst_structure_get_value (s,
"state"));

            switch (state) {
                // ...
            }
        }
    }
}


Is it a problem the way I poll the bus or may it be even a GStreamer bug?

I'm using GStreamer 0.10.12 (Ubuntu Feisty).

Thank you for any hints.

Regards,
Mathis

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