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armv6: Accelerate vector_fmul_window

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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%

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Ben Avison 2014-07-11 00:12:33 +01:00 • committed by Martin Storsjö
parent 87552d54d3
commit 5edad2c4a1
2 changed files with 210 additions and 1 deletions
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7
libavutil/arm/float_dsp_init_vfp.c
View file

@ -26,12 +26,17 @@
void ff_vector_fmul_vfp(float *dst, const float *src0, const float *src1,
int len);
void ff_vector_fmul_window_vfp(float *dst, const float *src0,
const float *src1, const float *win, int len);
void ff_vector_fmul_reverse_vfp(float *dst, const float *src0,
const float *src1, int len);
av_cold void ff_float_dsp_init_vfp(AVFloatDSPContext *fdsp, int cpu_flags)
{
if (!have_vfpv3(cpu_flags))
if (!have_vfpv3(cpu_flags)) {
fdsp->vector_fmul = ff_vector_fmul_vfp;
fdsp->vector_fmul_window = ff_vector_fmul_window_vfp;
}
fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_vfp;
}