OMAP5 mpeg4 encoding

Sufanu Alexandra

Prodigy 235 points

Hi,

I'm trying to use OMAP5 encoding functionality. I's using GLSDK and dce_enc_test from libdce.

i tried with the following command:

./dce_enc_test 1920 816 1000 in.yuv out.m4v mpeg4 simple 6 tiler

and there's a loss of quality. I attached a screenshot from my movie before and after encoding.

if i try a h264 encoding i get the following error:

/home/alexd/libdce/test_qnx/dce_enc_test/dce_enc_test.c:1147: main error: fail: -1

VIDENC2_Control which returns -1. Is there any way to activate Debuig for Codec Engine?

Thanks,

Alexandra

BeforeAndAfter.rar

over 11 years ago

0 Yanko Todorov-XID over 11 years ago

TI__Mastermind 29520 points

Hello Alexandra,

The VIDENC2 video encoder interface. Provides the user an interface to create and interact with XDAIS algorithms that are compliant with the XDM-defined IVIDENC2 video encoder interface

http://processors.wiki.ti.com/index.php/Codec_Engine_Application_Developers_Guide

You can see the VIDENC implementation through this link - https://gitorious.org/gstreamer-omap/libdce/commit/6d612966b6445498482bbf89dfc7c2e22dbb13e8

I assume that, you can download libdce sources and apply your changes.

Follow the sequence.

Build DCE

Add the bios-syslink package into the already set XDCPATH variable

export XDCPATH="$XDCPATH;$HOME/ducati/bios-syslink/packages"

Clone libdce tree in $HOME/ducati/libdce

cd $HOME/ducati
git clone git://gitorious.org/gstreamer-omap/libdce.git
cd libdce

export XDCBUILDCFG="`pwd`/ducati/build/config.bld"
cd ducati/platform/base_image
$XDCROOT/xdc -j4 -PD .

When the build succeeds, the appm3 image will be in out/app_m3/release/dce_app_m3.xem3.

Note: To reduce the size of the images, the debug symbols can be stripped:

$TMS470CGTOOLPATH/bin/strip470 Notify_MPUSYS_reroute_Test_Core0.xem3 
$TMS470CGTOOLPATH/bin/strip470 dce_app_m3.xem3

Build DCE userspace

If building natively, clone libdce tree. Otherwise, if cross-compiling, you can use the same copy you cloned on your PC when you built dce_app_m3.xem3.

cd libdce
./autogen --prefix=/usr
make -j4
sudo make install

I also suggest to see pvr driver https://git.linaro.org/ubuntu/pvr-omap4.git


Best regards,
Yanko