On Di, 2014-04-08 at 19:03 -0400, Patrick Doyle wrote: > I have a ridiculously pinhole sized memory footprint into which I > would like to squeeze a gstreamer based video pipeline. I am looking > for tips on what I can do to minimize the footprint as much as > possible for my Yocto based system. > > Looking at the rootfs, I see that libgstaudio is included. Can > anybody give me any tips on how I might exclude that from my system? > At worst, I suppose I could write a post install task that simply > removes it from the rootfs, but that feels unduly hackish to me. > > Also, I tried adding a .bbappend file with --disable-theora, > --disable-vorbis, etc... added, but when I looked at the resulting > config.status file, I found my --disable-theora & --disable-vorbis > options in ac_cs_config, followed by --enable-theora and > --enable-vorbis. > > Adding insult to injury, the resulting compressed rootfs was 100 bytes > longer than before :-) (The part of me that enjoys ironic humor, > laughed heartily at that. The part of me that is just trying to > squeeze this image into my 6MB partition wept.) > > Is there a way to configure gstreamer with just the set of 3 or 4 > plugins I really need? Can I compile static libraries and link them > into into my own static application? Yes, you most likely want to use static linking in your case. See the --enable-static-plugins configure options for the plugin modules. Your application then will have to explicitly link to all plugins it wants to use, and initialise them after calling gst_init(). See the GST_PLUGIN_STATIC_DECLARE() and GST_PLUGIN_STATIC_REGISTER() macros for that. Also you probably want to compile GStreamer and other software with -ffunction-sections and -fdata-sections and link everything together with --gc-sections. For GStreamer you can also disable some unwanted parts via --disable-X (see ./configure --help, there's e.g. --disable-parse). libgstaudio will be needed for the audio encoder and decoders btw. -- Sebastian Dröge, Centricular Ltd - http://www.centricular.com Expertise, Straight from the Source
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