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Hi all, I have already added support for scaled forward non-power-of-2 floating-point FFT: https://github.com/projectNe10/Ne10/commit/79c3d787302f8d74b9bcfe6545d487cdf1b101d9 Two flags are added to cfg structure: is_forward_scaled and is_backward_scaled. By setting is_forward_scaled to anything but zero, ne10_fft_c2c_1d_float32_neon will scale the output. So we can remove need for one buffer on stack mentioned below....

On 3 February 2015 at 01:31, Phil Wang <Phil.Wang at arm.com> wrote: > Hi all, > > I have already added support for scaled forward non-power-of-2 floating-point FFT: > https://github.com/projectNe10/Ne10/commit/79c3d787302f8d74b9bcfe6545d487cdf1b101d9 > > Two flags are added to cfg structure: is_forward_scaled and is_backward_scaled. > By setting is_forward_scaled to anything but zero, ne10_fft_c2c_1d_float32_neon will > scale the output. So we can remove need for one buffer on sta...

I'm trying to get these cleaned up and landed, but I'm running into some trouble with this patch. Using commit a08b29d88e3c (July 21) of Ne10, I'm seeing test failures for 60-point FFTs: nfft=60 inverse=0,snr = -3.312408 ** poor snr: -3.312408 ** nfft=60 inverse=1,snr = -16.079597 ** poor snr: -16.079597 ** All other sizes tested appear to work fine (84 to 140 dB of SNR). This

Hi Timothy, Sorry for late reply. I have upstreamed the patch to fix the regression here: https://github.com/projectNe10/Ne10/commit/ee5d856cd9cb8c4a15ace567df4239f4e788d043 I have tested it with Vish's branch: http://git.linaro.org/people/viswanath.puttagunta/opus.git/shortlog/refs/heads/rfcv3_fft_fixed) Both unit test dft and unit test mdct passed on ARM v7/v8, floating point/fixed point, with or without Ne...

Hi Ralph, I have pushed patches to enable radix 3 and radix 5. Github: https://github.com/projectNe10/Ne10/releases/tag/v1.2.0 Best Regards, Phil Wang > Date: Thu, 11 Dec 2014 10:46:50 -0800 > From: Ralph Giles <giles at thaumas.net> > Subject: Re: [opus] [ARM][FFT][NEON] Integrate Ne10 into Opus? > To: opus at xiph.org > Message-ID: <5489E69A.5000305 at thaumas.net> &...

Hello, I’m using NXP layerscape Arch (A53/A72), and I want to use NE 10 Project library , and llvm compiler 3.8.1.1 (https://projectne10.github.io/Ne10/) <https://projectne10.github.io/Ne10/> When compiling the project file I get the following errors : ./NE10_abs.asm.s:59:9: error: unrecognized instruction mnemonic vmov s2, r3 ^ ../NE10_abs.asm.s:62:9: error: unrecognized instruction mnemonic...

...roduces. Without the neon on the Pi3 the 1.2 – 1.85 perf boost of neon with FFT is lost and it really effects AEC effectiveness. There are quite a number of low cost ArmSocs now all approx. Pi3 level and above that really benefit from neon support with FFT. Arm have specific Libs for this https://projectne10.github.io/Ne10/doc/modules.html But since Version 3.3.1 FFTW http://www.fftw.org/ is supported Neon. Probably the biggest applicable use of speexdsp is going to be excluded when many opt for 64bit. Stuart Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 -----...

...e Patch Phil at ARM added to fix the overflow issue in nfft=60 case. After git-bisect, looks like the culprit patch in Ne10 [1] is cf33c0d51a445bbe6ad7e21c2af875acee07b838 Phil, Please fix the regression at the earliest and let me know if you need any help. Regards, Vish [1]: https://github.com/projectNe10/Ne10.git On 5 October 2015 at 20:21, Timothy B. Terriberry <tterriberry at mozilla.com> wrote: > > I'm trying to get these cleaned up and landed, but I'm running into some trouble with this patch. Using commit a08b29d88e3c (July 21) of Ne10, I'm seeing test failures for 60-...

...test x"${enable_asm}" = x"yes"]".. section in configure.ac be re-written? Please advise. [1]: https://code.google.com/p/webrtc/issues/detail?id=3350&can=1&q=ne10&colspec=ID%20Pri%20Mstone%20ReleaseBlock%20Area%20Status%20Owner%20Summary [2]: https://github.com/projectNe10/Ne10 Regards, Vish On 9 November 2014 15:34, Viswanath Puttagunta <viswanath.puttagunta at linaro.org> wrote: > > Hello, > > This patch introduces ARM NEON Intrinsics to optimize > kf_bfly4 routine in celt part of libopus. > > Using NEON optimized kf_bfly4(_neon) routin...

Hello, This patch introduces ARM NEON Intrinsics to optimize kf_bfly4 routine in celt part of libopus. Using NEON optimized kf_bfly4(_neon) routine helped improve performance of opus_fft_impl function by about 21.4%. The end use case was decoding a music opus ogg file. The end use case saw performance improvement of about 4.47%. This patch has 2 components i. Actual neon code to improve

...itch_xcorr optimization. Did only unit tests. a. Simplest use case to validate this optimization for correctness. b. Simplest use case to validate this optimization for performance. Would prefer something like opusdec that can be executed on command line. Any other feedback welcome. [1]: http://projectne10.github.io/Ne10/ Viswanath Puttagunta (1): armv7: celt_pitch_xcorr: Introduce ARM neon intrinsics Makefile.am | 23 +++++++++++ celt/_kiss_fft_guts.h | 4 +- celt/arch.h | 4 +- celt/arm/arm_celt_map.c | 15 +++++++- celt/arm/c...

...mize opus encode (float only) usecase using ARM NE10 library. Mainly effects opus_fft and ctl_mdct_forward and related functions. This optimization can be used for ARM CPUs that have NEON VFP unit. This patch only enables optimizations for ARMv7. Official ARM NE10 library page available at http://projectne10.github.io/Ne10/ To enable this optimization, use --enable-intrinsics --with-NE10=<install_prefix> or --enable-intrinsics --with-NE10-libraries=<NE10_lib_dir> --with-NE10-includes=<NE10_includes_dir> Compile time checks made during configure process to make sure optimization opti...

Hello opus-dev, I've been cooking up this patchset to integrate NE10 library into opus. Current patchset focuses on encode use case mainly effecting performance of clt_mdct_forward() and opus_fft() (for float only) Glad to report the following on Encode use case: (Measured on my Beaglebone Black Cortex-A8 board) - Performance improvement for encode use case ~= 12.34% (Based on time -p

...mize opus encode (float only) usecase using ARM NE10 library. Mainly effects opus_fft and ctl_mdct_forward and related functions. This optimization can be used for ARM CPUs that have NEON VFP unit. This patch only enables optimizations for ARMv7. Official ARM NE10 library page available at http://projectne10.github.io/Ne10/ To enable this optimization, use --enable-intrinsics --with-NE10=<install_prefix> or --enable-intrinsics --with-NE10-libraries=<NE10_lib_dir> --with-NE10-includes=<NE10_includes_dir> Compile time checks made during configure process to make sure optimization opti...

...mize opus encode (float only) usecase using ARM NE10 library. Mainly effects opus_fft and ctl_mdct_forward and related functions. This optimization can be used for ARM CPUs that have NEON VFP unit. This patch only enables optimizations for ARMv7. Official ARM NE10 library page available at http://projectne10.github.io/Ne10/ To enable this optimization, use --enable-intrinsics --with-NE10=<install_prefix> or --enable-intrinsics --with-NE10-libraries=<NE10_lib_dir> --with-NE10-includes=<NE10_includes_dir> Compile time checks made during configure process to make sure optimization opti...

...mize opus encode (float only) usecase using ARM NE10 library. Mainly effects opus_fft and ctl_mdct_forward and related functions. This optimization can be used for ARM CPUs that have NEON VFP unit. This patch only enables optimizations for ARMv7. Official ARM NE10 library page available at http://projectne10.github.io/Ne10/ To enable this optimization, use --enable-intrinsics --with-NE10=<install_prefix> or --enable-intrinsics --with-NE10-libraries=<NE10_lib_dir> --with-NE10-includes=<NE10_includes_dir> Compile time checks made during configure process to make sure optimization opti...

Changes from RFC PATCH v3 - Just rebased on tip - For all else, please see notes from RFC PATCH v3 at http://lists.xiph.org/pipermail/opus/2015-March/002902.html - latest wip opus tree/branch https://git.linaro.org/people/viswanath.puttagunta/Ne10.git branch: rfcv4_final_fft_ne10 Viswanath Puttagunta (1): armv7(float): Optimize encode usecase using NE10 library Makefile.am

Changes from RFC PATCH v1: - passing arch parameter explicitly - reduced stack usage by ~3.5K by using scaled NE10 fft version - moved all optimization array functions to arm_celt_map.c - Other cleanups pointed out by Timothy Phil, As you mentioned earlier, could you please address all compile and linker errors/warnings coming out of Ne10 library? You can find my working Ne10 repo at [1] You

Changes from RFC PATCH v2 - fixed compile issue when just compiling for --enable-intrinsics for ARMv7 without NE10 - Notes for NE10: - All compile/link warnings are now in upstream NE10 - Only patch pending upstream in NE10 is the one that needs to add -funsafe-math-optimizations for ARMv7 targets. - Phil Wang @ ARM is working on getting this fixed. - Note that even without

Hi Timothy, As I mentioned earlier [1], I now fixed compile issues with fixed point and resubmitting the patch. I also have new patch that does intrinsics optimizations for celt_pitch_xcorr targetting aarch64. You can find my latest work-in-progress branch at [2] For reference, you can use the Ne10 pre-built libraries at [3] Note that I am working with Phil at ARM to get my patch at [4]