[FFmpeg-cvslog] r23095 - in trunk/libavcodec: Makefile allcodecs.c mpegaudio.h mpegaudio_tablegen.h mpegaudiodec.c mpegaudiodec_float.c

[Carl Eugen Hoyos]

Carl Eugen Hoyos <cehoyos <at> ag.or.at> writes:

> M?ns Rullg?rd <mans <at> mansr.com> writes:
> 
> > The float version is 4x slower on Cortex-A8 not counting post-conversion.
> > Float and int are about the same speed on Intel i7.
> 
> mplayer (31175) 100mbDVB.ts -demuxer lavf -novideo -benchmark -ao pcm -ac
> mp3/ffmp2float/ffmp2
> 
> P3: Pentium III (Katmai) 500MHz SSE
> XP: Athlon XP 2600+ Thoroughbred SSE, 3DNow!
> HP: Intel(R) Pentium(R) M processor 1.86GHz (GenuineIntel 6 13 8) SSE2
> TP: Intel(R) Pentium(R) M processor 1500MHz (GenuineIntel 6 9 5) SSE2
> 
> P3: 2.9 / 3.9 / 4.8
> XP: 0.8 / 1.1 / 1.3
> HP: 0.5 / 0.6 / 0.9
> TP: 0.7 / 0.9 / 1.3

Using the same old MPlayer version:
C2: Core2 Duo E8400
G4: 800MHz PowerPC G4 (OS X 10.5.8)

C2: 0.17 / 0.22 / 0.27
G4: 2.6  / 2.7  / 4.9

Latest improvements are hardly measurable on the Core2 Duo, but certainly very
small compared to the original speed-up.

Carl Eugen