Re: [FFmpeg-devel] [PATCH 4/9] x86: simple_idct_put: 12bits versions

2015-10-09 Thread Michael Niedermayer
On Thu, Oct 08, 2015 at 08:22:51AM +0200, Christophe Gisquet wrote: > On 12 frames of a 444p 12 bits DNxHR sequence: > C: 78902 decicycles in idct, 262071 runs, 73 skips > avx: 32478 decicycles in idct, 262045 runs, 99 skips > > Difference between the 2: > stddev:0.39 P

[FFmpeg-devel] [PATCH 4/9] x86: simple_idct_put: 12bits versions

2015-10-07 Thread Christophe Gisquet
On 12 frames of a 444p 12 bits DNxHR sequence: C: 78902 decicycles in idct, 262071 runs, 73 skips avx: 32478 decicycles in idct, 262045 runs, 99 skips Difference between the 2: stddev:0.39 PSNR:104.47 MAXDIFF:2 This is unavoidable and due to the scale factors used