[FFmpeg-devel] [PATCH v3] SH4 mpegaudio decoder optimizations

Luca Barbato lu_zero
Thu Jan 20 10:55:48 CET 2011

On 12/17/2010 05:54 PM, Guennadi Liakhovetski wrote:
> Hi all
> This is version 3 of the following patch:
> This patch implements several mpegaudio optimizations for SH4 FPU-enabled 
> SoCs. Verified to provide more than 40% acceleration, when decoding a 
> 128kbps stereo mp3 audio file to /dev/null.
> Changes listed in the patch header, thanks to all who commented!

You specialized a lot those macros and replaced those in the code. Is
this change improving the performance enough to be interesting for the
other arches as well?

I know those macros might not be re-used yet, but they should be generic
enough to allow that, would be hard to implement the generic variant for sh?



Luca Barbato

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