[Webkit-unassigned] [Bug 85776] Webaudio implemention for channel mixing lacks of something related to quad

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=85776





--- Comment #2 from Wang Jiajun <Amesists at gmail.com>  2012-05-07 01:29:30 PST ---
Currently, the support in channel mixing does not cover quad. But how they should be is described in the spec: https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#UpMix

I find that it doesn't work correctly when up mixing from mono to quad, from quad to 5.1 and down mixing from quad to mono, from quad to stereo. So I have modified the AudioBus.cpp to make it work.

Additionally, I have written the corresponding layout tests for them. In the layout tests, I check the rendered data in js, not just render a .wav file. So I rewrite all the layout tests related to channel mixing and remove the corresponding .wav file.

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