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aacenc: add SIMD optimizations for abs_pow34 and quantization

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Performance improvements:

quant_bands:
with:     681 decicycles in quant_bands, 8388453 runs,    155 skips
without: 1190 decicycles in quant_bands, 8388386 runs,    222 skips
Around 42% for the function

Twoloop coder:

abs_pow34:
with/without: 7.82s/8.17s
Around 4% for the entire encoder

Both:
with/without: 7.15s/8.17s
Around 12% for the entire encoder

Fast coder:

abs_pow34:
with/without: 3.40s/3.77s
Around 10% for the entire encoder

Both:
with/without: 3.02s/3.77s
Around 20% faster for the entire encoder

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Tested-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2016-10-08 15:59:14 +01:00
parent 3b02f6dd7b
commit d2ae5f77c6
13 changed files with 170 additions and 26 deletions
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2
libavcodec/aacenc_utils.h
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@ -63,7 +63,7 @@ static inline int quant(float coef, const float Q, const float rounding)
}
static inline void quantize_bands(int *out, const float *in, const float *scaled,
int size, float Q34, int is_signed, int maxval,
int size, int is_signed, int maxval, const float Q34,
const float rounding)
{
int i;