armv6: Accelerate vector_fmul_window

Multimedia / Libav - Ben Avison [riscosopen.org] - 17 July 2014 17:34 UTC

I benchmarked the result by measuring the number of gperftools samples that hit anywhere in the AAC decoder (starting from aac_decode_frame()) or specifically in vector_fmul_window_c() / ff_vector_fmul_window_vfp() for the same sample AAC stream:

Before After Mean StdDev Mean StdDev Confidence Change Audio decode 1598.2 47.4 1529.2 25.4 100.0% +4.5%
vector_fmul_window 244.0 22.1 188.9 22.3 100.0% +29.2%

5edad2c armv6: Accelerate vector_fmul_window
libavutil/arm/float_dsp_init_vfp.c | 7 +-
libavutil/arm/float_dsp_vfp.S | 204 ++++++++++++++++++++++++++++++++++++
2 files changed, 210 insertions(+), 1 deletion(-)

Upstream: git.libav.org

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