Re: [FFmpeg-devel] av_ctz optimization

2015-10-11 Thread Ronald S. Bultje
Hi, On Sat, Oct 10, 2015 at 10:50 PM, James Almer wrote: > On 10/10/2015 11:44 PM, Ganesh Ajjanagadde wrote: > > Hi all, > > > > Turns out that the De-Bruijn method can be used to speed up av_ctz as > > well. But before going about it, I was curious as to why such an > >

Re: [FFmpeg-devel] av_ctz optimization

2015-10-11 Thread James Almer
On 10/11/2015 8:01 AM, Ronald S. Bultje wrote: > Hi, > > On Sat, Oct 10, 2015 at 10:50 PM, James Almer wrote: > >> On 10/10/2015 11:44 PM, Ganesh Ajjanagadde wrote: >>> Hi all, >>> >>> Turns out that the De-Bruijn method can be used to speed up av_ctz as >>> well. But before

Re: [FFmpeg-devel] av_ctz optimization

2015-10-11 Thread Timothy Gu
On Sun, Oct 11, 2015 at 9:10 AM Ganesh Ajjanagadde wrote: > Isn't that an API change and not an ABI change (it was in doc/APIchanges)? > No, since intmath.h is not public. Timothy ___ ffmpeg-devel mailing list

Re: [FFmpeg-devel] av_ctz optimization

2015-10-11 Thread Ganesh Ajjanagadde
On Sun, Oct 11, 2015 at 12:06 PM, James Almer wrote: > On 10/11/2015 8:01 AM, Ronald S. Bultje wrote: >> Hi, >> >> On Sat, Oct 10, 2015 at 10:50 PM, James Almer wrote: >> >>> On 10/10/2015 11:44 PM, Ganesh Ajjanagadde wrote: Hi all, Turns out

Re: [FFmpeg-devel] av_ctz optimization

2015-10-11 Thread Ronald S. Bultje
Hi, On Sun, Oct 11, 2015 at 12:53 PM, Ganesh Ajjanagadde wrote: > On Sun, Oct 11, 2015 at 12:33 PM, Timothy Gu > wrote: > > On Sun, Oct 11, 2015 at 9:10 AM Ganesh Ajjanagadde > wrote: > > > >> Isn't that an API change and not an ABI

Re: [FFmpeg-devel] av_ctz optimization

2015-10-11 Thread Ganesh Ajjanagadde
On Sun, Oct 11, 2015 at 12:33 PM, Timothy Gu wrote: > On Sun, Oct 11, 2015 at 9:10 AM Ganesh Ajjanagadde wrote: > >> Isn't that an API change and not an ABI change (it was in doc/APIchanges)? >> > > No, since intmath.h is not public. So basically av_ctz

[FFmpeg-devel] av_ctz optimization

2015-10-10 Thread Ganesh Ajjanagadde
Hi all, Turns out that the De-Bruijn method can be used to speed up av_ctz as well. But before going about it, I was curious as to why such an interface is actually public. It makes absolutely zero sense to me: usage is limited exactly to one location, namely libavcodec/flacenc.c. Was this an

Re: [FFmpeg-devel] av_ctz optimization

2015-10-10 Thread James Almer
On 10/10/2015 11:44 PM, Ganesh Ajjanagadde wrote: > Hi all, > > Turns out that the De-Bruijn method can be used to speed up av_ctz as > well. But before going about it, I was curious as to why such an > interface is actually public. It makes absolutely zero sense to me: > usage is limited exactly