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N
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${ noResults }
4 Commits (dc3aa376dcea2bf53e1188971eee10ca90764e99)
| Author | SHA1 | Message | Date |
|---|---|---|---|
James Almer
|
80444e23ac |
x86/opusdps: clear the high bits from some gprs
Fixes checkasm on systems like win64. Reviewed-by: Lynne Signed-off-by: James Almer <jamrial@gmail.com> |
6 years ago |
Lynne
|
4b7166c9d5 |
x86/opusdsp: replace loads with shuffles
Has a slight speedup. Can't be carried over to aarch64, since it has no shufps-like instruction. Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: James Almer <jamrial@gmail.com> |
6 years ago |
|
Lynne
|
b43b8d337d |
x86/opusdsp: fix WIN64 return value
Signed-off-by: James Almer <jamrial@gmail.com> |
6 years ago |
|
Lynne
|
605e330310 |
x86/opusdsp: implement FMA3 accelerated postfilter and deemphasis
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;
}
|
6 years ago |