Speex dev - Oct 2009 - Decoder performance on Windows Mobile 5

Hello,

I'm trying to use the speex decoder on Windows Mobile 5. I have compiled the
debug version of the lib for WM5 PPC. I am running this test on an HTC TyTn
phone.

I'm decoding 4Kbits narrowband speex audio. Each decode call takes a buffer
of size 100 bytes.

The problem is that each decode call takes around 130ms to complete. This is too
slow for the audio to play back if I stream the decoded audio to the WaveOut
audio device.

If I run the same test on my desktop PC with the win32 compiled version of
libspeex using SSE support then the decode takes less than 1ms.

Is there anything I can do to speed up the decode on Windows Mobile 5?

Thanks,
Steven


-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.xiph.org/pipermail/speex-dev/attachments/20091009/f673fd5a/attachment.htm

Hi
On WindowsCE you should enable the FIXED_POINT flag. Floating point operations
are too slow on ARM processors.
-- Bjoern

From: steven.harris at essential-viewing.com
To: speex-dev at xiph.org
Date: Fri, 9 Oct 2009 10:13:05 +0100
Subject: [Speex-dev] Decoder performance on Windows Mobile 5
















Hello,

 

I?m trying to use the speex decoder on Windows Mobile
5. I have compiled the debug version of the lib for WM5 PPC. I am running this
test on an HTC TyTn phone.

 

I?m decoding 4Kbits narrowband speex audio. Each
decode call takes a buffer of size 100 bytes.

 

The problem is that each decode call takes around 130ms to
complete. This is too slow for the audio to play back if I stream the decoded
audio to the WaveOut audio device.

 

If I run the same test on my desktop PC with the win32
compiled version of libspeex using SSE support then the decode takes less than
1ms.

 

Is there anything I can do to speed up the decode on Windows
Mobile 5?

 

Thanks,

Steven

 

 

 		 	   		  
_________________________________________________________________
Word Up! F? opdateringer fra Facebook og Arto i din Messenger. G?r det her!
http://www.microsoft.com/danmark/windows/windowslive/import-friends/
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://lists.xiph.org/pipermail/speex-dev/attachments/20091011/1b362f53/attachment.htm