[XviD-devel] Decoder performance

[Edouard Gomez]

Christoph Lampert (chl at math.uni-bonn.de) wrote:
> ffmpeg
> 168fps for no-bframes      
> 183fps(!) for b-frames 

We have the same results now i did some branch clean up in the bframe
decoding code.

  %   cumulative   self              self     total
 time   seconds   seconds    calls  ms/call  ms/call  name
  7.80      4.04     0.82      149     5.50    14.79  decoder_bframe
  2.00      8.21     0.21      158     1.33    21.12  decoder_pframe

As you can see, the brame  decoding function is slower (lot of sub cases
that slow the code flow) but  it seems it call much less other functions
and it  finally does less job than  for a pframe. It  results decoding a
bframe takes 25% less time than decoding a pframe.

-- 
Edouard Gomez