search for: flac__lpc_compute_autocorrel

Displaying 3 results from an estimated 3 matches for "flac__lpc_compute_autocorrel".

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_r...
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