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Makoto Kato ccf77507b4 Bug 1845651 - Part 2. Convert OpenMAX DL assembler to clang compatible. r=padenot Newer Android NDK has no GNU assembler, so I convert OpenMAX DL in Gecko to clang compatible assembler. Gecko's OpenMAX DL is imported from Cromium tree, but it is removed from Chromium (https://crbug.com/917355). So there is no upstream code now. Also, if using MOZ_LIBAV_FF on arm32 build, MOZ_LIBAV_FF is slower than OpenMAX DL. Convolution reverb - https://padenot.github.io/webaudio-benchmark/index.html - OpenMAX DL ... 16x - MOZ_LIBAV_FF ... 13x Depends on D184717 Differential Revision: https://phabricator.services.mozilla.com/D184719		2023-08-05 07:16:21 +00:00
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Bug 1158741 added an omxSP_FFTInv_CCSToR_F32_Sfs_unscaled function as an
optimization which performs the same operation as
omxSP_FFTInv_CCSToR_F32_Sfs except it doesn't scale the results by the
length of the FFT. For consistency with other FFT routines used, it does
multiply the results by two.

The affected files are:
media/openmax_dl/dl/sp/api/omxSP.h
media/openmax_dl/dl/sp/src/omxSP_FFTInv_CCSToR_F32_Sfs_unscaled_s.S