gst_segment_to_running_time assertion

[Sebastian Dröge]

On Mi, 2014-07-02 at 17:21 -0700, Shawn Lewis wrote:
> Hi, I've got appsrc -> playbin, for audio only. I'm trying to reset
> the pipeline if the user interrupts playback with a new track, by
> setting the state to NULL, setting a new uri ("appsrc://"), and then
> setting the state to PAUSED.
> 
> This works if I let playbin detect caps, but I need to manually set
> caps on appsrc sometimes.
> 
> If I manually set the caps on appsrc during the source_found callback
> ('deep-notify::source') by doing:
> 
> static void
> found_source (GObject * object, GObject * orig, GParamSpec * pspec, GstApp * app
> )
> {
>     GstCaps* caps;
> 
>     g_object_get (orig, pspec->name, &app->appsrc, NULL);
> 
>     caps = gst_caps_new_simple("audio/x-raw",
>             "format", G_TYPE_STRING, "S16LE",
>             "layout", G_TYPE_STRING, "interleaved",
>             "rate", G_TYPE_INT, 44100,
>             "channels", G_TYPE_INT, 2,
>             NULL);
>     gst_app_src_set_caps(GST_APP_SRC(gst_app->appsrc), caps);
>     gst_base_src_set_format(GST_BASE_SRC(gst_app->appsrc), GST_FORMAT_TIME);
>     gst_caps_unref(caps);
> 
>     gst_element_set_state (gst_app->playbin, GST_STATE_PLAYING);
> }
> 
> things work the first time through. But when I switch tracks via the
> above method (still manually setting caps), I get the following error.
> I've seen some references elsewhere on the list to this error but
> haven't been able to find a solution.
> 
> GStreamer-CRITICAL **:  gst_segment_to_running_time: assertion
> `segment->format == format' failed

Hi,

what you describe there should work in theory. Independent of that, why
are you setting the playbin to PLAYING inside the found_source callback?

Can you provide a simple testcase that others can run to reproduce the
issue? That will make it easier for everybody to find the exact problem
other than just guessing.

-- 
Sebastian Dröge, Centricular Ltd - http://www.centricular.com
Expertise, Straight from the Source
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