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Starred by 8 users
Status: Archived
Owner:
Closed: Nov 7
Cc:
Components:
NextAction: ----
OS: ----
Pri: 2
Type: Enhancement



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Switch FFT to OpenMAX/pffft/Ne10
Project Member Reported by andrew@webrtc.org, Apr 21 2014 Back to list
This may consist of finalizing, testing and landing Kevin's old CL here:
http://review.webrtc.org/1819004/

Alternately we may prefer to use the OpenMAX APIs directly. Turaj is bringing in OpenMAX now for MPLC, which has x86 support.
 
Project Member Comment 1 by andrew@webrtc.org, Apr 21 2014
This will immediately impact:
AECM (though we should probably ignore this, as it's going away)
NS fixed-point

Pieces we could move to OpenMAX in the future:
AEC (have to profile against the current SSE optimizations, and soon-to-be-started NEON optimizations.)
NS floating-point
Transient suppression

Project Member Comment 2 by andrew@webrtc.org, May 14 2014
Cc: rtoy@google.com
Summary: Switch FFT to OpenMAX/pffft (was: Switch FFT to OpenMAX)
Actually, we should strongly consider using pffft instead. rtoy's benchmarks show it is faster than openmax on x86. Work is ongoing to improve the NEON implementation as well.
Project Member Comment 3 by andrew@webrtc.org, May 31 2014
Labels: -Restrict-View-Talk Restrict-View-Google
Project Member Comment 4 by bjornv@webrtc.org, Jun 2 2014
Labels: Area-SignalProcessing
Project Member Comment 5 by andrew@webrtc.org, Jun 23 2014
Summary: Switch FFT to OpenMAX/pffft/Ne10 (was: Switch FFT to OpenMAX/pffft)
We should consider Ne10 as well:
https://github.com/projectNe10/Ne10

Yang Zhang from ARM has recently worked on improving performance:
I have updated the float/int32/int16 FFT of Ne10. Currently they are faster than OpenMax DL’s on V7. I also added the intrinsic implementation for V8 Aarch 64 mode.  And compared with C version, V8 intrinsic has better performance boost than V7 assembly.
 
Next, I’m planning to investigate the non-power-of-2 FFT.
Project Member Comment 6 by tina.legrand@webrtc.org, Oct 30 2014
Labels: EngTriaged IceBox
Project Member Comment 7 by bjornv@webrtc.org, Jun 9 2015
Cc: -bjornv@webrtc.org
Project Member Comment 8 by andrew@webrtc.org, Nov 26 2015
Labels: -Restrict-View-Google
Project Member Comment 9 by henrik.lundin@webrtc.org, Oct 5 2016
Components: Audio
Project Member Comment 10 by henrik.lundin@webrtc.org, Oct 5 2016
Components: -SignalProcessing
Project Member Comment 11 by tina.legrand@webrtc.org, Nov 7
Status: Archived
[Bulk edit] This issue hasn't been modified the last twelve months -> archiving.

If this is still a valid issue that should be open, please reopen again.
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