[Speex-dev] Using speex on ARM7TDMI...

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Wed Jul 4 08:21:00 PDT 2007


You can have a look at speexenc/speexdec for examples of complete (but
minimal) applications or sampleenc/sampledec for basic examples of how
to use just libspeex. Whether you're running on a PC or an embedded
system shouldn't really change the way you use Speex.

	Jean-Marc

Pietro Maggi a écrit :
> Hi,
> I'm evaluating the libspeex library for usage in an embedded platform
> based on an ARM7 TDMI micro (the ubiquitous Atmel AT91SAM7S).
> In details, I'm trying to use libspeex to encode the audio stream
> coming into the micro from an I2S channel and saving the encoded audio
> to an SD card (currently in binary format just to test it decoded back
> to the I2S channel from the saved file), but I've some difficulties
> understanding where to start from.
> Where can I find an example of usage of the libspeex in an embedded
> platform?
> 
> Currently I've built the library with a couple of defines:
> - MANUAL_ALLOC (and the others relevant defines to use static memory)
> - FIXED_POINT
> But it still doesn't work (encoded/decoded audio is garbage).
> 
> So, sorry for the silly questions, but can someone gently point me
> towards the ligth switch ?
> :-D
> 
> Thanks
> Pietro
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> 


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