Re: [FFmpeg-devel] [PATCH 2/2] lavc/aacsbr: sbr_dequant optimization

2015-12-19 Thread Ganesh Ajjanagadde
On Sat, Dec 19, 2015 at 4:21 AM, Andreas Cadhalpun wrote: > On 18.12.2015 16:52, Ganesh Ajjanagadde wrote: >> On Tue, Dec 15, 2015 at 9:53 PM, Ganesh Ajjanagadde >> wrote: >>> This uses ff_exp2fi to get a speedup (~ 6x). >>> >>> sample benchmark (Haswell, GNU/Linux): >>> old: >>> 19102 decicycl

Re: [FFmpeg-devel] [PATCH 2/2] lavc/aacsbr: sbr_dequant optimization

2015-12-19 Thread Andreas Cadhalpun
On 18.12.2015 16:52, Ganesh Ajjanagadde wrote: > On Tue, Dec 15, 2015 at 9:53 PM, Ganesh Ajjanagadde > wrote: >> This uses ff_exp2fi to get a speedup (~ 6x). >> >> sample benchmark (Haswell, GNU/Linux): >> old: >> 19102 decicycles in sbr_dequant,1023 runs, 1 skips >> 19002 decicycles

Re: [FFmpeg-devel] [PATCH 2/2] lavc/aacsbr: sbr_dequant optimization

2015-12-18 Thread Ganesh Ajjanagadde
On Tue, Dec 15, 2015 at 9:53 PM, Ganesh Ajjanagadde wrote: > This uses ff_exp2fi to get a speedup (~ 6x). > > sample benchmark (Haswell, GNU/Linux): > old: > 19102 decicycles in sbr_dequant,1023 runs, 1 skips > 19002 decicycles in sbr_dequant,2045 runs, 3 skips > 17638 deci