[MPlayer-dev-eng] [PATCH] remove mp3lib

Micha mk at spline.de
Fri Sep 23 19:59:34 CEST 2011


> Would you care to give the ac mpg123 a spin, too? Regardless about the
> performance of ffmpeg's mp3 (and mp2, and mp1) decoding, the comparison
> to the official mpg123 code should work out on removing the internal
> fork.

Please don't mind me jumping in here and contribute some numbers. I'm
not even sure they are very helpful to you.
I had quite an adventure compiling mplayer (svn) and libmpg123 (1.13.4)
on a very old x86 hardware that I use and a small embedded arm-device.
Although benchmarking on arm may not really fit into the discussion I
added it for your information.

==A==

model name      : Pentium II (Deschutes)
cpu MHz         : 348.487
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 mmx fxsr up
Description:    Ubuntu 8.04.4 LTS

==B==

Processor       : Feroceon 88FR131 rev 1 (v5l)
Features        : swp half thumb fastmult edsp
Hardware        : Marvell SheevaPlug Reference Board
Description:    Debian GNU/Linux 6.0.2 (squeeze)


The Numbers:

/usr/local/bin/mplayer -ac mp3 -vo null -vc null -benchmark -ao
pcm:fast:file=/dev/null file.mp3 -endpos 300 -loop 3


==A==

Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III

VC:   0.000s VO:   0.000s A:  12.582s Sys:  28.006s =   40.588s

Opening audio decoder: [mp3lib] MPEG layer-2, layer-3

VC:   0.000s VO:   0.000s A:  11.650s Sys:  26.212s =   37.862s


==B==

Opening audio decoder: [mpg123] MPEG 1.0/2.0/2.5 layers I, II, III

VC:   0.000s VO:   0.000s A:   8.383s Sys:  17.308s =   25.691s

Opening audio decoder: [mp3lib] MPEG layer-2, layer-3

VC:   0.000s VO:   0.000s A:  77.976s Sys: 159.694s =  237.670s


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