A question about multiple players

[David Ing]

There is no legitimate reason why I'm avoiding the GMailLoop.  I just
didn't want to take the time to understand what it is and how it works.

On Fri, Sep 6, 2019 at 2:21 PM Ben Rush <ben at ben-rush.net> wrote:

> I have. Things look similar. I'll keep looking.
>
> Question: is there a reason you're not using the main loop? Have you seen
> it improve stability?
>
> On Fri, Sep 6, 2019, 4:19 PM David Ing <ding at panopto.com> wrote:
>
>> I do not use `gst_parse_launch`, `gst_bus_add_watch`, or anything related
>> to GMainLoop.  I am not familiar enough to give you stronger advice.
>>
>> You might want to look through the samples and tutorials (many of which
>> use a GMailLoop) if you haven't done that already.
>>
>>
>>
>> On Fri, Sep 6, 2019 at 2:08 PM Ben Rush <ben at ben-rush.net> wrote:
>>
>>> 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?
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.freedesktop.org
>>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>
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