I apologize for top-level post, it was my mail-client issue...
Dne Thu, 18 Nov 2010 07:38:47 +0100 Jan Pohanka <[email protected]>
napsal(a):
I'm sorry for unclear question. I'd like to use libavcodec (h263
encoder) in a standalone embedded application (without operationg
system). Now I'm facing the problems with compilation using gcc for arm
(codesourcery).
I have used this configure options
--disable-everything --enable-encoder=h263 --enable-decoder=h263
--arch=arm --cpu=arm9tdmi --disable-asm
--enable-cross-compile --cross-prefix=arm-none-eabi --target-os=none
I'm not sure with target-os option. Can it be used like this?
Also I have a possibility to perform jpeg compression (dct) by hardware
on my development board. Can it inserted to avcodec encoding algorithm?
best regards Jan
You shouldn't nothing to implement or change in libavcodec. Only you
need is to compile ffmpeg. You will be able to do something like this:
ffmpeg -i test.avi -f h263 -an test.h263 that could be used for any task
you need. Or i didn't understand your problem right.
16 лист. 2010, в 15:13, Tomas Härdin написал(а):
On Tue, 2010-11-16 at 13:55 +0100, Jan Pohanka wrote:
Hello,
I need to implement h263 encoder on arm9tdmi platform. After some
research I have decided to use libavcodec as a base for this task.
Could please someone give me any hints for beginning to avoid dead
ends? I hope that the selected processor won't be too slow for
realtime encoding.
best regards
Jan
http://wiki.multimedia.cx/index.php?title=FFmpeg_codec_howto
http://wiki.multimedia.cx/index.php?title=FFmpeg_programming_conventions
Also, looking at the existing code is probably a good idea. Come to
think of it, making sure relevant DSP code is ported is probably where
you'll want to focus (I have no idea what the ARM support looks like).
/Tomas
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