[Speex-dev] Speex for TI 5509 DSP

Jamey Hicks jamey.hicks at hp.com
Thu Mar 3 05:13:43 PST 2005

Paul Gryting wrote:

>I saw a thread in the list archives about a speex port to  TI 55x DSP.
>Wondering how that worked out (is working out)?
>Also wondering if there is a source archive for it,
>  or if the patch in the email archives is still current, or if there's been
My patch to provide fixed-point support for Speex on the TI 55xx DSP is 
available here:

The issue with codebooks that Jean-Marc mentioned is that the TI 55xx C 
compiler uses two bytes per char, so codebooks take more memory than 
they need to.  The whole compress/decompress fit in SRAM, though, so it 
probably runs faster this way and consumes less power.  I did update 
speex_bits to use all the bits in 2 byte chars.

If I remember correctly, that patch also enables Speex fixed-point on 
Analog Devices Blackfin DSP.

Hope this is helpful.  Let me know if you find any issues with the 
patch.  I've been working on things lower in the food chain lately so I 
have not had a chance to update it.


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