Consider using ffmpeg FFT on OSX |
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Issue descriptionFor OSX, webaudio uses OSX's FFT. But Linux and Windows we use the FFT from ffmpeg. (Android uses a different, faster library.) See if we can switch to ffmpeg on OSX. That will unify the behavior of webaudio on desktop to the same FFT. This should eliminate minor differences in behavior between OSX and other desktop platforms.
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Jan 30 2017
platform/audio/FFTFrame.h has the interface and platform/audio/mac/FFTFrame.cpp has the mac implementation.
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Feb 14 2017
crrev.com/2689213002 is the CL to use FFmpeg's FFT for OSX. https://codereview.chromium.org/2689213002/#msg1 indicates that using this instead of OSX's vDSP's FFT makes the FFT 1.73 times slower. This is not something we want to do. Closing as Wontfix. |
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Comment 1 by hongchan@chromium.org
, Jan 30 2017