As some of you know, the GPAC player is compliant Digital Radio player, according to the T-DMB standard (i.e. according to MPEG-2 TS, MPEG-4 SL, MPEG-4 AAC and MPEG-4 BIFS). Given the fact that GPAC is big and implements many standards, the question on its footprint was raised when considering embedded platforms. In the GPAC code, there is a possibility to compile the code, removing a lot of unnecessary features. On Windows, you have to tweak the include/gpac/configuration.h file. On linux, you have to deal with the configure script. Here is an example:

Using SVN revision 2136.

concolat@virtualubuntu:~/svn/gpac/bin/gcc$ ./configure --use-js=no 
--use-mad=no --use-xvid=no --use-ffmpeg=no --use-ogg=no --use-vorbis=no
--use-theora=no --use-openjpeg=no --disable-streaming --disable-isoff-frag
--disable-isoff-hint --disable-isoff-write --disable-loader-xmt
--disable-loader-bt --disable-loader-isoff --disable-scene-encode
--disable-mcrypt --disable-od-dump --disable-scene-dump --disable-scene-stats
--disable-swf --disable-export --disable-import --disable-m2ps --disable-ogg
-disable-avi --disable-qtvr --disable-beng --disable-x3d --disable-3d
--disable-ssl --disable-jack --disable-pulse --use-a52=no --disable-odf --disable-isoff
--disable-parsers --disable-m2ts-mux

With this you can compile, just the MP4Client application and the few plugins needed (MPEG-2 TS, BIFS, ODF, AAC, Video ouput, audio output, rasterizer and font engine) and you will be able to play T-DMB files (no MP4, no BT or XMT).

The result of a Windows XP 32 bits compilation is the following:

MP4Client application: 76 KB
GPAC Core library: 1240 KB
AAC decoder plugin: 244 KB
BIFS decoder plugin: 7.5 KB
ODF decoder plugin: 8.5 KB
MPEG-2 TS plugin: 16.5 KB
DirectX Audio/Video plugin: 64 KB
FreeType font engine plugin: 360 KB
Rasterizer plugin: 32.5 KB
JPEG & PNG decoder plugin: 72 KB

This make a total T-DMB player for 2.07 MB (759 KB as a 7z archive !!). There is no other dependency (except the C runtime, Direct X runtime). This is good but could be improved (e.g. the BIFS decoder could be simplified to support only the nodes in the T-DMB profile, all unnecessary functions in the core library are not excluded from the compilation …).

On Ubuntu 10.10, 32 bits, compiled with -Os and stripped, the results are:

MP4Client application: 63 KB
GPAC Core library: 1726 KB
AAC decoder plugin: 9.5 KB
BIFS decoder plugin: 5.5 KB
ODF decoder plugin: 5.5 KB
MPEG-2 TS plugin: 26 KB
OSS Audio plugin: 9.5 KB
X11 Video plugin: 22 KB
FreeType font engine plugin: 34 KB
Rasterizer plugin: 52 KB
JPEG & PNG decoder plugin: 13.5 KB

This make a TAR package of 1.9 MB and a TGZ of 743 KB. Very light, I think, even if in this case some dependencies are hidden on my system (libm, libz, libjpeg, libpng12, libpthread, libdl, and libc).