Re: GStreamer SDK – Preview release for Android

[Dragos D]

The plugin registration does not require dynamic linking.
On Oct 5, 2012 4:55 PM, "cowwoc" <cowwoc at bbs.darktech.org> wrote:

>
>     How do you handle plugin registration? I was under the impression that
> the plugin registration system required dynamic linking? Aren't there
> symbol collisions across the various modules?
>
> Gili
>
> On 05/10/2012 4:53 PM, Andoni Morales wrote:
>
>
>
> 2012/10/5 cowwoc <cowwoc at bbs.darktech.org>
>
>>
>>     What's the impact of static linking followed by dynamic linking as
>> you mentioned? I assume from a legal/LGPL point of view, it's as if we're
>> dynamically linking our application with GStreamer, correct?
>>
>
>
> Another advantage of this method is that we allow application developers
> to include only the plugins required by the application, instead of
> providing a single blob with *everything*, reducing considerably the size
> of the shared library.
>
> Andoni
>
>>
>> Thanks,
>> Gili
>>
>>
>> On 05/10/2012 11:29 AM, Sebastian Dröge wrote:
>>
>>> On Fr, 2012-10-05 at 11:05 -0400, cowwoc wrote:
>>>
>>>>      Okay, I'll bite :)
>>>>
>>>>       1. Is there any reason that your distribution only contains
>>>>          static library files? Do you plan on supporting *both* static
>>>>          and dynamic linking by November?
>>>>
>>> These static libraries are linked into one large dynamic library that is
>>> then used by the Android application. This was done because Android has
>>> a limitation of 64 shared libraries per process, and you can easily hit
>>> that with all the libraries GStreamer and the plugins depend upon and
>>> the number of plugins.
>>>
>>> Dynamic linking is nonetheless possible and there will also be a
>>> zip/tarball with all the dynamic libraries and also the GStreamer tools
>>> like gst-launch, etc. This is mostly for debugging or if you want to do
>>> something really special. But for applications the supported way of
>>> using GStreamer on Android will be the static linking route that is also
>>> explained in the docs at docs.gstreamer.com (login as the test user to
>>> see them). Using this static linking is btw very convenient, we made as
>>> easy as possible. See this for more details:
>>> http://docs.gstreamer.com/display/GstSDK/Installing+for+Android
>>> +development
>>>
>>>
>>>        1. Can you please add build instructions to the Android page? We
>>>>          should be able to build the SDK from source.
>>>>
>>> It's done the same way as for the other platforms, you only additionally
>>> need to have the Android SDK and NDK and tell the build system where to
>>> find it. This is not documented yet though.
>>>
>>> Basically you need to get cerbero from
>>> http://cgit.freedesktop.org/gstreamer-sdk/cerbero/ and use the
>>> config/cross-android.cbc configuration file.
>>>
>>> You can find some more information on cerbero in general in the build
>>> from source section on
>>> http://docs.gstreamer.com/display/GstSDK/Installing+on
>>> +Linux#InstallingonLinux-buildfromsource
>>>
>>> More or less the same applies for Android too. This also provides an
>>> easy way for you to integrate other libraries and software to be used in
>>> your application.
>>>
>>>        1. Do you plan on merging these changes into GStreamer's main
>>>>          repository, and main branch? I ask because all other platforms
>>>>          have been merged into GStreamer's main branch and it's not
>>>>          clear whether you plan on merging these in the future.
>>>>
>>> Yes, all changes will be merged back upstream, including the new
>>> plugins.
>>>
>>
>>   _______________________________________________
>> gstreamer-android mailing list
>> gstreamer-android at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-android
>>
>
>
>
> --
> Andoni Morales Alastruey
>
> LongoMatch:The Digital Coach
> http://www.longomatch.ylatuya.es
>
>
> _______________________________________________
> gstreamer-android mailing listgstreamer-android at lists.freedesktop.orghttp://lists.freedesktop.org/mailman/listinfo/gstreamer-android
>
>
>
> _______________________________________________
> gstreamer-android mailing list
> gstreamer-android at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-android
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-android/attachments/20121005/3c184b4b/attachment-0001.html>