| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | Include attributes.h directly | Andreas Rheinhardt | 2021-04-19 | 1 | -0/+1 |
| | | | | | | | | | Some files currently rely on libavutil/cpu.h to include it for them; yet said file won't use include it any more after the currently deprecated functions are removed, so include attributes.h directly. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | ||||
| * | x85/opusdsp: enable the functions on all FMA3 CPUs | James Almer | 2019-09-11 | 1 | -1/+1 |
| | | | | | | | | It's not using ymm registers, so limiting it to CPUs with fast AVX is not necessary. Signed-off-by: James Almer <jamrial@gmail.com> | ||||
| * | x86/opusdsp: implement FMA3 accelerated postfilter and deemphasis | Lynne | 2019-04-01 | 1 | -0/+35 |
| 58893 decicycles in deemphasis_c, 130548 runs, 524 skips 9475 decicycles in deemphasis_fma3, 130686 runs, 386 skips -> 6.21x speedup 24866 decicycles in postfilter_c, 65386 runs, 150 skips 5268 decicycles in postfilter_fma3, 65505 runs, 31 skips -> 4.72x speedup Total decoder speedup: ~14% Deemphasis SIMD based on the following unrolling: const float c1 = CELT_EMPH_COEFF, c2 = c1*c1, c3 = c2*c1, c4 = c3*c1; float state = coeff; for (int i = 0; i < len; i += 4) { y[0] = x[0] + c1*state; y[1] = x[1] + c2*state + c1*x[0]; y[2] = x[2] + c3*state + c1*x[1] + c2*x[0]; y[3] = x[3] + c4*state + c1*x[2] + c2*x[1] + c3*x[0]; state = y[3]; y += 4; x += 4; } | |||||
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