From 74d40cd507594fe775644d52a8f03b23f3ddf8c9 Mon Sep 17 00:00:00 2001 From: Frank Galligan Date: Tue, 13 Jan 2015 11:15:24 -0800 Subject: Add 64x variance Neon functions Add optimized Neon functions of: vp9_variance32x64 vp9_variance64x32 vp9_variance64x64 On Nexus 7 speed -5 and -6 saw about a 4% increase in perf. Speeds -7 and -8 saw about a 6% increase in perf. Tested on Nexus 7, built with ndk r10d, gcc 4.9. Change-Id: I5a81f13c9897eb927fa39662530f5524a0f768fa --- vp9/encoder/arm/neon/vp9_variance_neon.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'vp9/encoder/arm/neon') diff --git a/vp9/encoder/arm/neon/vp9_variance_neon.c b/vp9/encoder/arm/neon/vp9_variance_neon.c index 816fbda1f..567b7deb1 100644 --- a/vp9/encoder/arm/neon/vp9_variance_neon.c +++ b/vp9/encoder/arm/neon/vp9_variance_neon.c @@ -10,6 +10,7 @@ #include #include "./vp9_rtcd.h" +#include "./vpx_config.h" #include "vpx_ports/mem.h" #include "vpx/vpx_integer.h" @@ -28,6 +29,8 @@ enum { kHeight16PlusOne = 17 }; enum { kWidth32 = 32 }; enum { kHeight32 = 32 }; enum { kHeight32PlusOne = 33 }; +enum { kWidth64 = 64 }; +enum { kHeight64 = 64 }; enum { kPixelStepOne = 1 }; enum { kAlign16 = 16 }; @@ -208,6 +211,30 @@ unsigned int vp9_variance32x32_neon(const uint8_t *a, int a_stride, return *sse - (((int64_t)sum * sum) / (kWidth32 * kHeight32)); } +unsigned int vp9_variance32x64_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum; + variance_neon_w8(a, a_stride, b, b_stride, kWidth32, kHeight64, sse, &sum); + return *sse - (((int64_t)sum * sum) >> 11); // >> 11 = / 32 * 64 +} + +unsigned int vp9_variance64x32_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum; + variance_neon_w8(a, a_stride, b, b_stride, kWidth64, kHeight32, sse, &sum); + return *sse - (((int64_t)sum * sum) >> 11); // >> 11 = / 64 * 32 +} + +unsigned int vp9_variance64x64_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum; + variance_neon_w8(a, a_stride, b, b_stride, kWidth64, kHeight64, sse, &sum); + return *sse - (((int64_t)sum * sum) >> 12); // >> 12 = / 64 * 64 +} + unsigned int vp9_sub_pixel_variance32x32_neon(const uint8_t *src, int src_stride, int xoffset, -- cgit v1.2.3