[vorbis-dev] Encoder for Pocket PCs

[Rado Buransky]

Hi Jonathan!

    I'm have Dell Axim 300 MHz, iPAQ 5450 400 MHz and two smartphones. Those smartphones aren't very smart (and fast) at this time. I have already optimized famous Lame library (used for MP3 encoding), which uses floats, and it is able to encode sound real-time even on the slowest machines I have. But I must tell you that I don't have any experience with Ogg Vorbis. I just thought it is good idea to have an encoder for Pocket PC. If you know something about Vorbis encoder (or you know someone who could help us), we can begin to work on that project and completely replace floats by fixed-point numbers. But I'm sorry, I'm not experienced enough to lead.
    I have Intel IPP library for XScales and also library which supports pipelining. It's support for some 64-bit co-processor. I'm planning to buy that VTune and compiler from Intel. This could be good starting point to begin with.

Rado
  ----- Original Message ----- 
  From: Jonathan_Huang at compal.com 
  To: vorbis-dev at xiph.org 
  Sent: Monday, August 18, 2003 5:37 AM
  Subject: RE: [vorbis-dev] Encoder for Pocket PCs

<p>  Hi Rado:

   

             I am in the same situation as you are.  I can't even use vtune to nail where the problem lies. Do we really need to port the whole thing into fix-point as intel says in the optimization handbook?  What's the speed of the xscale you are having(hope not for the smart phone , ha ha).?

             Since I had been planning and you are already doing on MP3, why don't you lead a project and let's follow.

   

  John

   

  -----Original Message-----
  From: Rado Buransky [mailto:buro at resco-net.com] 
  Sent: Friday, August 15, 2003 6:12 PM
  To: vorbis-dev at xiph.org
  Subject: [vorbis-dev] Encoder for Pocket PCs

   

  Hi developers!

   

  I would like to know if it is possible to use Vorbis encoder as a real-time encoder for Pocket PCs, because they don't have floating point based unit. If not, do you plan to make a fixed-point based encoder? I'm very interested in this issue so if I could help, I will. I'm working on fixed-point MP3 encoder for XScale devices in cooperation with Intel. It seems that realtime MP3 encoder isn't big problem. Any comments are wellcome!

   

  Thanks

   

  Rado

<p>--- >8 ----
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