Re: GStreamer SDK – Preview release for Android

[Andoni Morales]

2012/10/5 Andoni Morales <ylatuya at gmail.com>

>
>
> 2012/10/5 cowwoc <cowwoc at bbs.darktech.org>
>
>>
>>     x264 is GPL, no doubt about that. I didn't check the bigger library,
>> but we'd definitely need to be able to indicate whether it should be
>> included or excluded.
>>
>>     That brings up a bigger question: do we have fine-grained control
>> about which plugins get included or excluded as part of the Android build?
>> Do you support building *all* the plugins that are available for Linux?
>>
>
> We provide the exact same set of plugins as in the rest of platforms,
> except for the system plugins such as audio/video sinks and
> decoders/encoders wrappers. There might be some exceptions, but in general
> you should be able to use the same plugins as on Linux, Windows or OS X.
>
> The list of plugins that will be included in the final shared library is
> set in the GSTREAMER_PLUGINS variable, in jni/Android.mk.
> From this list of plugins, a gstreamer_android.c file is generated, that
> defines an initialization function which takes care of registering the
> static plugins and redirecting the gstreamer logs to logcat among other
> things. This list of plugins is also used to find all the dependencies and
> link the final shared DLL. We have also solved all the
>
Not a DLL, but a shared library :)

> collisions in function names, so that shouldn't be a problem.
> For the plugins list, you can create it manually or use any of the
> categories predefined, such as GSTREAMER_PLUGINS_CODECS or
> GST_PLUGINS_PLAYBACK.
>
> Andoni
>
>
>
>> Thanks,
>> Gili
>>
>>
>> On 05/10/2012 4:50 PM, Dragos D wrote:
>>
>> My understanding is that ffmpeg is LGPL, but what about x264? By the way,
>> is it included in the big GStreamer library?
>> On Oct 5, 2012 4:33 PM, "Sebastian Dröge" <
>> sebastian.droege at collabora.co.uk> wrote:
>>
>>> On Fr, 2012-10-05 at 16:10 -0400, cowwoc wrote:
>>> > 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?
>>>
>>> I'm not a lawyer but general understanding of LGPL and static linking
>>> is, that you need to provide all means to be able to relink the
>>> application against modified versions of the LGPL'd libraries.
>>>
>>> If you take a look at the approach we did for static linking here you'll
>>> notice that this is absolutely nothing to worry about. All (LGPL'd)
>>> GStreamer code is linked into a single shared library from these static
>>> libraries and your application code is a) separate from this and b) uses
>>> GStreamer and related libraries like a shared library, thus the same
>>> rules apply as for using GStreamer as a shared library.
>>>
>>> E.g. the demo application I linked in the original mail contains one
>>> shared library libgstreamer_android.so, which contains all of GStreamer,
>>> dependencies, plugins. And another library libtutorial-5.so, which
>>> contains the native code of the application.
>>>
>>>
>>> There should be no problem developing closed source, commercial
>>> applications with this approach as it's the same situation you have on
>>> desktop systems with shared LGPL'd libraries.
>>>
>>> _______________________________________________
>>> gstreamer-android mailing list
>>> gstreamer-android at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-android
>>>
>>>
>>
>> _______________________________________________
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>>
>>
>>
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>> 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
>



-- 
Andoni Morales Alastruey

LongoMatch:The Digital Coach
http://www.longomatch.ylatuya.es
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