[Ffmpeg-devel] [PATCH] fix mpegaudiodec on ARM and benchmark
Aurelien Jacobs
aurel
Wed Aug 23 14:12:40 CEST 2006
Hi,
After the recent optimisation in mpegaudiodec, I've benchmarked mp3 on ARM.
But first, mpegaudiodec.c didn't compiled, so I fixed it.
I guess I should commit the attached patch ?
Here is how I benchmarked:
./mplayer -quiet -ac ffmp3 -ao pcm:fast:file=/dev/null -benchmark a.mp3
And here are the results with various lavc revisions (Xscale IXP420).
r6036
BENCHMARKs: VC: 0.000s VO: 0.000s A: 216.931s Sys: 0.414s = 217.346s
BENCHMARK%: VC: 0.0000% VO: 0.0000% A: 99.8093% Sys: 0.1907% = 100.0000%
r6037
BENCHMARKs: VC: 0.000s VO: 0.000s A: 212.347s Sys: 0.412s = 212.759s
BENCHMARK%: VC: 0.0000% VO: 0.0000% A: 99.8062% Sys: 0.1938% = 100.0000%
r6039
BENCHMARKs: VC: 0.000s VO: 0.000s A: 212.703s Sys: 0.411s = 213.114s
BENCHMARK%: VC: 0.0000% VO: 0.0000% A: 99.8070% Sys: 0.1930% = 100.0000%
r6050 (patched)
BENCHMARKs: VC: 0.000s VO: 0.000s A: 170.642s Sys: 0.411s = 171.053s
BENCHMARK%: VC: 0.0000% VO: 0.0000% A: 99.7597% Sys: 0.2403% = 100.0000%
Overall 20% speedup, which is not so bad :-)
Aurel
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