Displaying 3 results from an estimated 3 matches for "flac__lpc_compute_autocorrelation".
2004 Sep 10
4
Altivec Optimizations
...ng. They need to be cleaned up,
made
relocatable, and documented; otherwise, they seem to work fairly well.
I
see an overall ~27% speed improvement when encoding with the default
settings, and greater at -8.
The ones I have done are:
FLAC__lpc_compute_residual_from_qlp_coefficients_16_bit()
FLAC__lpc_compute_autocorrelation()
I did make a change in stream_encoder.c to better align the data passed
to
FLAC__lpc_compute_residual_from_qlp_coefficients(), I hope this is ok.
Most
occurrences of residual are replaced with residual+order as in:
FLAC__fixed_compute_residual(signal+order, residual_samples, order,...
2004 Sep 10
0
Altivec Optimizations
...table, and documented; otherwise, they seem to work fairly
> well.
> I
> see an overall ~27% speed improvement when encoding with the default
> settings, and greater at -8.
>
> The ones I have done are:
>
> FLAC__lpc_compute_residual_from_qlp_coefficients_16_bit()
> FLAC__lpc_compute_autocorrelation()
>
> I did make a change in stream_encoder.c to better align the data
> passed
> to
> FLAC__lpc_compute_residual_from_qlp_coefficients(), I hope this is
> ok.
> Most
> occurrences of residual are replaced with residual+order as in:
>
> FLAC__fixed_compute_residu...
2018 Jul 10
9
[PATCH 0/7] PowerPC64 performance improvements
The following series adds initial vector support for PowerPC64.
On POWER9, flac --best is about 3.3x faster.
Amitay Isaacs (2):
Add m4 macro to check for C __attribute__ features
Check if compiler supports target attribute on ppc64
Anton Blanchard (5):
configure.ac: Remove SPE detection code
configure.ac: Add VSX enable/disable
configure.ac: Fix FLAC__CPU_PPC on little endian, and add