How to print GST_DEBUG_OBJECT messages in console?

[Chuck Crisler]

That has been the most confusing part for me. I haven't yet written a
plug-in, but you still have to work through these items to figure out the
category to enter for GST_DEBUG to get your log messages.

Look at these sources, they should help:
http://www.freedesktop.org/software/gstreamer-sdk/data/docs/2012.5/gstreamer-0.10/gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-INIT:CAPS

http://docs.gstreamer.com/display/GstSDK/Basic+tutorial+11%3A+Debugging+tools

On Fri, Oct 17, 2014 at 1:47 PM, Francisco Velázquez <
francisco.javier at me.com> wrote:

> Hi Chuck
>
> Thank you for your reply.
>
> I am running the example code from
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/section-dynamic-pipelines.html.
> There you can see that each GST_DEBUG_OBJECT has an object pointer as first
> parameter.
>
> I tried the GST_DEBUG(...) macro. For that, I added to the top of my code:
>
> GST_DEBUG_CATEGORY (my_category);
> #define GST_CAT_DEFAULT my_category
>
> Then I exported the environment variable GST_DEBUG=my_category:9, and
> finally I tried two things to initialise the category.
>
> 1) I added the following line above GST_DEBUG_CATEGORY (my_category);:
>
> #define _do_init GST_DEBUG_CATEGORY_INIT (my_category, "my category", 0, "This
> is the category for debugging this program");
>
> 2) I added GST_DEBUG_CATEGORY_INIT (my_category, "my category", 0, "This
> is the category for debugging this program”); right after g_option_context_add_group
> (ctx, gst_init_get_option_group ());
>
>  but debugging messages are still not appearing in the console.
>
> I am testing the code in Xcode 6.0.1 in Mac OS X 10.9.5. I export the
> environment variable in the Xcode GUI. I know it is taking effect, because
> the console displays DEBUG messages from all other categories if I export
> GST_DEBUG=5, or GST_DEBUG=*:5. The messages displayed vary depending on
> the value. I have also created some .dot files with the environment
> variable GST_DEBUG_DUMP_DOT_DIR also exported through the GUI in Xcode.
> My apologises for creating confusion when I stated “declare GST_DEBUG”, it
> was a figurative sentence.
>
> I think that I am doing something wrong with the initialisation of
> GST_DEBUG_CATEGORY_INIT.
>
> Do you have any idea what I am missing or doing wrong?
>
> Thank you!
>
> Francisco
>
> On 16 Oct 2014, at 17:22, Chuck Crisler <ccrisler at mutualink.net> wrote:
>
> The process does work, so you have some small but critical error. The
> GST_DEBUG_OBJECT requires some object pointer as the first parameter, so
> insure that you have that. Alternatively, you can simply use
> GST_DEBUG(...). Second, you say 'declare GST_DEBUG=', it must be 'export
> GST_DEBUG=' in your environment before launching the app, assuming Linux.
>
> If you are still having trouble, post the OS you are using and code
> snippets around the important lines (GST_DEBUG_CATEGORY, #define
> _do_init..., export GST_DEBUG=...
>
> On Thu, Oct 16, 2014 at 8:34 AM, Francisco Velázquez <
> francisco.javier at me.com> wrote:
>
>> Hi GStreamer devel community,
>>
>> I have a question that may be trivial, but I’m struggling with it. My
>> question refers to the code of Chapter 19 of the GStreamer manual posted in
>> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/section-dynamic-pipelines.html
>>
>> My question is:
>>
>> How to print GST_DEBUG_OBJECT messages in console?
>>
>> I have read the threads below among others. The environment variable
>> GST_DEBUG has an effect when being general. For example, GST_DEBUG=5 or
>> GST_DEBUG=*:5 print messages from all involved categories. I have not
>> figured out how to print to the console the messages from the code example.
>>
>>
>> http://gstreamer-devel.966125.n4.nabble.com/how-do-you-enable-output-of-GST-DEBUG-OBJECT-td4662640.html
>> http://permalink.gmane.org/gmane.comp.video.gstreamer.devel/46433
>>
>> I have also tried to initialise a category for the code example with:
>>
>> GST_DEBUG_CATEGORY (my_category);
>> #define GST_CAT_DEFAULT my_category
>>
>> #define _do_init GST_DEBUG_CATEGORY_INIT (my_category, "my category", 0, "This
>> is the category for the code example of Chapter 19");
>>
>> Then, I declare GST_DEBUG=mycategory:9, but there are no messages printed
>> from GST_DEBUG_OBJECT.
>>
>> Thanks a lot for any hint!
>>
>> Francisco
>>
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
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