[FFmpeg-devel] [PATCH 0/4] floating-point AC-3 encoder

[Justin Ruggles]

On 12/22/2010 09:30 AM, Justin Ruggles wrote:

> 
> These 4 patches add floating-point support to the AC-3 encoder.
> 
> There are a few ways this could be done, but I chose what I thought
> was the simplest approach.  ac3enc.c #includes ac3enc_fixed.c/h or
> ac3enc_float.c/h depending on CONFIG_AC3ENC_FLOAT as selected during
> configure.
> 
> I'm not sure how the regression tests will turn out due to the use of
> floating-point.  I changed the references to match my system, but it
> would be good to have some tests from different systems so we know
> beforehand if FATE would turn yellow.


Here are some graphs showing PEAQ comparisons for fixed-point vs.
floating-point for 2 sample files.

http://www.flickr.com/photos/justinruggles/5282927867/sizes/l/in/photostream/

http://www.flickr.com/photos/justinruggles/5282927845/sizes/l/in/photostream/


-Justin