A question about multiple players

[Ben Rush]

Do I need a different context for each main loop? Do the steps leading up
to 8 look okay?

Your advice about the PDBs was invaluable today, by the way. When I track
all bits of this down I'll send out an update.


On Fri, Sep 6, 2019, 3:51 PM David Ing <ding at panopto.com> wrote:

> Steps 8-10 are in the correct order (my code does it that way).
>
> But I don't have a step 11 because I don't use a GMainLoop.  I would guess
> that the main loop should stop before step 8 but I am only guessing.
>
> On Fri, Sep 6, 2019 at 1:32 PM Ben Rush <ben at ben-rush.net> wrote:
>
>> I have a need to put multiple video windows in a single application. This
>> means multiple pipelines. For example, the RTSP URL is different for each
>> player, and so I get a new pipeline for each invocation
>> of gst_parse_launch.
>>
>> I can share code, but in general: what is the best way to do this? The
>> way I'm doing this now (for EACH player I've instantiated in the SAME app):
>>
>> 1) gst_parse_launch, get back the pipeline,
>> 2) gst_pipeline_get_bus, to create a bus on this pipeline.
>> 3) g_main_loop_new(NULL, FALSE) to create a new loop (this is where my
>> main question is at)
>> 4) gst_bus_add_watch to create an add watch on this pipeline,
>> 5) gst_element_set_state to set my pipeline state to GST_STATE_PLAYING
>> 6) g_main_loop_run on the loop returned from #3
>> 7) Then I play until a stop is issued....
>> 8) gst_element_set_state(pipeline, GST_STATE_NULL)
>> 9) unref the bus,
>> 10) unref the pipeline
>> 11) unref the loop
>>
>> I ask about this order, and the fact I'm creating a new loop without an
>> independent context because I'm getting some random crashes in my app
>> hosting multiple players, and it appears to be during tear down. In
>> general, is this pattern acceptable, or have I committed a sin somewhere?
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>
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