Building gst-plugins-good/ext/jpeg

[Ryan Melville]

>> Do you have it on the system or the NDK root? It needs to be on the latter. Stefan

I have it at /usr/lib (came with the Ubuntu system) which I agree isn't useful.

Ah, so I need to go download the libjpeg sources on my own, create Android.mk<http://Android.mk> for them, build libjpeg using ndk-build and make that available to the gstreamer build?

Is the "NDK root" the actual Android NDK install path?  Or, perhaps I can do this similar to the glib dependency and plunk the libjpeg project in the gstreamer-0.10_ndk_build dir (a peer to glib)?  I'm thinking the build output will already go to the obj/ dir and be in the link path of the configure check and jpeg plugin build?

Thank you for your help!

Regards,

Ryan


-----Original message-----
From: Stefan Sauer <ensonic at hora-obscura.de>
To: "gstreamer-android at lists.freedesktop.org" <gstreamer-android at lists.freedesktop.org>
Sent: Thu, Apr 26, 2012 02:50:06 CDT
Subject: Re: Building gst-plugins-good/ext/jpeg

On 04/25/2012 11:45 PM, Ryan Melville wrote:
Hi,

Thanks to the directions at http://gstreamer.freedesktop.org/wiki/GstreamerAndroid_InstallInstructions I was able to build GStreamer for Android.

However, I noticed that libgstjpeg.so was not built.  This is in gst-plugins-good/ext/jpeg.  It doesn’t seem to be referenced by any Android.mk…

My build mentioned:

configure: *** checking feature: jpeg library ***
configure: *** for plug-ins: jpeg ***
checking for jpeg_set_defaults in -ljpeg-mmx... no
checking for jpeg_set_defaults in -ljpeg... no
configure: *** These plugins will not be built: jpeg

I *do* have /usr/lib/libjpeg.so on my system and it *does* have jpeg_set_defaults as shown by “readelfs –Ws /usr/lib/libjpeg.so”, which seems to be the detection logic in ‘configure’.  But, I’m not sure it would even look at my Linux system’s libraries (what use would they be to an Android build?).

Do you have it on the system or the NDK root? It needs to be on the latter.
Stefan

Anyway, I apparently don’t understand why the jpeg plugin isn’t being selected to build, as I don’t understand the magic that happened during “./setup.sh” to setup all of my Android.mk’s and build the other libraries.

Has anyone else built the jpeg plugin?  Or, I would greatly appreciate any insight or tips on how to build it.

Regards,
Ryan





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