* be found in the AUTHORS file in the root of the source tree.
*/
+#include <assert.h>
#include <emmintrin.h> // SSE2
#include "./vpx_config.h"
#include "./vpx_dsp_rtcd.h"
-
#include "vpx_ports/mem.h"
-typedef void (*getNxMvar_fn_t)(const unsigned char *src, int src_stride,
- const unsigned char *ref, int ref_stride,
- unsigned int *sse, int *sum);
+static INLINE unsigned int add32x4_sse2(__m128i val) {
+ val = _mm_add_epi32(val, _mm_srli_si128(val, 8));
+ val = _mm_add_epi32(val, _mm_srli_si128(val, 4));
+ return _mm_cvtsi128_si32(val);
+}
unsigned int vpx_get_mb_ss_sse2(const int16_t *src) {
__m128i vsum = _mm_setzero_si128();
src += 8;
}
- vsum = _mm_add_epi32(vsum, _mm_srli_si128(vsum, 8));
- vsum = _mm_add_epi32(vsum, _mm_srli_si128(vsum, 4));
- return _mm_cvtsi128_si32(vsum);
+ return add32x4_sse2(vsum);
}
-#define READ64(p, stride, i) \
- _mm_unpacklo_epi8( \
- _mm_cvtsi32_si128(*(const uint32_t *)(p + i * stride)), \
- _mm_cvtsi32_si128(*(const uint32_t *)(p + (i + 1) * stride)))
+static INLINE __m128i load4x2_sse2(const uint8_t *const p, const int stride) {
+ const __m128i p0 = _mm_cvtsi32_si128(*(const uint32_t *)(p + 0 * stride));
+ const __m128i p1 = _mm_cvtsi32_si128(*(const uint32_t *)(p + 1 * stride));
+ const __m128i p01 = _mm_unpacklo_epi32(p0, p1);
+ return _mm_unpacklo_epi8(p01, _mm_setzero_si128());
+}
+
+static INLINE void variance_kernel_sse2(const __m128i src, const __m128i ref,
+ __m128i *const sse,
+ __m128i *const sum) {
+ const __m128i diff = _mm_sub_epi16(src, ref);
+ *sse = _mm_add_epi32(*sse, _mm_madd_epi16(diff, diff));
+ *sum = _mm_add_epi16(*sum, diff);
+}
+
+// Can handle 128 pixels' diff sum (such as 8x16 or 16x8)
+// Slightly faster than variance_final_256_pel_sse2()
+static INLINE void variance_final_128_pel_sse2(__m128i vsse, __m128i vsum,
+ unsigned int *const sse,
+ int *const sum) {
+ *sse = add32x4_sse2(vsse);
-static void get4x4var_sse2(const uint8_t *src, int src_stride,
- const uint8_t *ref, int ref_stride,
- unsigned int *sse, int *sum) {
- const __m128i zero = _mm_setzero_si128();
- const __m128i src0 = _mm_unpacklo_epi8(READ64(src, src_stride, 0), zero);
- const __m128i src1 = _mm_unpacklo_epi8(READ64(src, src_stride, 2), zero);
- const __m128i ref0 = _mm_unpacklo_epi8(READ64(ref, ref_stride, 0), zero);
- const __m128i ref1 = _mm_unpacklo_epi8(READ64(ref, ref_stride, 2), zero);
- const __m128i diff0 = _mm_sub_epi16(src0, ref0);
- const __m128i diff1 = _mm_sub_epi16(src1, ref1);
-
- // sum
- __m128i vsum = _mm_add_epi16(diff0, diff1);
vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 8));
vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 4));
vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 2));
*sum = (int16_t)_mm_extract_epi16(vsum, 0);
+}
+
+// Can handle 256 pixels' diff sum (such as 16x16)
+static INLINE void variance_final_256_pel_sse2(__m128i vsse, __m128i vsum,
+ unsigned int *const sse,
+ int *const sum) {
+ *sse = add32x4_sse2(vsse);
- // sse
- vsum =
- _mm_add_epi32(_mm_madd_epi16(diff0, diff0), _mm_madd_epi16(diff1, diff1));
- vsum = _mm_add_epi32(vsum, _mm_srli_si128(vsum, 8));
- vsum = _mm_add_epi32(vsum, _mm_srli_si128(vsum, 4));
- *sse = _mm_cvtsi128_si32(vsum);
+ vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 8));
+ vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 4));
+ *sum = (int16_t)_mm_extract_epi16(vsum, 0);
+ *sum += (int16_t)_mm_extract_epi16(vsum, 1);
}
-void vpx_get8x8var_sse2(const uint8_t *src, int src_stride, const uint8_t *ref,
- int ref_stride, unsigned int *sse, int *sum) {
- const __m128i zero = _mm_setzero_si128();
- __m128i vsum = _mm_setzero_si128();
- __m128i vsse = _mm_setzero_si128();
+// Can handle 512 pixels' diff sum (such as 16x32 or 32x16)
+static INLINE void variance_final_512_pel_sse2(__m128i vsse, __m128i vsum,
+ unsigned int *const sse,
+ int *const sum) {
+ *sse = add32x4_sse2(vsse);
+
+ vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 8));
+ vsum = _mm_unpacklo_epi16(vsum, vsum);
+ vsum = _mm_srai_epi32(vsum, 16);
+ *sum = add32x4_sse2(vsum);
+}
+
+static INLINE __m128i sum_to_32bit_sse2(const __m128i sum) {
+ const __m128i sum_lo = _mm_srai_epi32(_mm_unpacklo_epi16(sum, sum), 16);
+ const __m128i sum_hi = _mm_srai_epi32(_mm_unpackhi_epi16(sum, sum), 16);
+ return _mm_add_epi32(sum_lo, sum_hi);
+}
+
+// Can handle 1024 pixels' diff sum (such as 32x32)
+static INLINE int sum_final_sse2(const __m128i sum) {
+ const __m128i t = sum_to_32bit_sse2(sum);
+ return add32x4_sse2(t);
+}
+
+static INLINE void variance4_sse2(const uint8_t *src, const int src_stride,
+ const uint8_t *ref, const int ref_stride,
+ const int h, __m128i *const sse,
+ __m128i *const sum) {
int i;
- for (i = 0; i < 8; i += 2) {
- const __m128i src0 = _mm_unpacklo_epi8(
- _mm_loadl_epi64((const __m128i *)(src + i * src_stride)), zero);
- const __m128i ref0 = _mm_unpacklo_epi8(
- _mm_loadl_epi64((const __m128i *)(ref + i * ref_stride)), zero);
- const __m128i diff0 = _mm_sub_epi16(src0, ref0);
-
- const __m128i src1 = _mm_unpacklo_epi8(
- _mm_loadl_epi64((const __m128i *)(src + (i + 1) * src_stride)), zero);
- const __m128i ref1 = _mm_unpacklo_epi8(
- _mm_loadl_epi64((const __m128i *)(ref + (i + 1) * ref_stride)), zero);
- const __m128i diff1 = _mm_sub_epi16(src1, ref1);
-
- vsum = _mm_add_epi16(vsum, diff0);
- vsum = _mm_add_epi16(vsum, diff1);
- vsse = _mm_add_epi32(vsse, _mm_madd_epi16(diff0, diff0));
- vsse = _mm_add_epi32(vsse, _mm_madd_epi16(diff1, diff1));
+ assert(h <= 256); // May overflow for larger height.
+ *sse = _mm_setzero_si128();
+ *sum = _mm_setzero_si128();
+
+ for (i = 0; i < h; i += 2) {
+ const __m128i s = load4x2_sse2(src, src_stride);
+ const __m128i r = load4x2_sse2(ref, ref_stride);
+
+ variance_kernel_sse2(s, r, sse, sum);
+ src += 2 * src_stride;
+ ref += 2 * ref_stride;
}
+}
- // sum
- vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 8));
- vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 4));
- vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 2));
- *sum = (int16_t)_mm_extract_epi16(vsum, 0);
+static INLINE void variance8_sse2(const uint8_t *src, const int src_stride,
+ const uint8_t *ref, const int ref_stride,
+ const int h, __m128i *const sse,
+ __m128i *const sum) {
+ const __m128i zero = _mm_setzero_si128();
+ int i;
- // sse
- vsse = _mm_add_epi32(vsse, _mm_srli_si128(vsse, 8));
- vsse = _mm_add_epi32(vsse, _mm_srli_si128(vsse, 4));
- *sse = _mm_cvtsi128_si32(vsse);
+ assert(h <= 128); // May overflow for larger height.
+ *sse = _mm_setzero_si128();
+ *sum = _mm_setzero_si128();
+
+ for (i = 0; i < h; i++) {
+ const __m128i s =
+ _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)src), zero);
+ const __m128i r =
+ _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)ref), zero);
+
+ variance_kernel_sse2(s, r, sse, sum);
+ src += src_stride;
+ ref += ref_stride;
+ }
}
-void vpx_get16x16var_sse2(const uint8_t *src, int src_stride,
- const uint8_t *ref, int ref_stride, unsigned int *sse,
- int *sum) {
+static INLINE void variance16_kernel_sse2(const uint8_t *const src,
+ const uint8_t *const ref,
+ __m128i *const sse,
+ __m128i *const sum) {
const __m128i zero = _mm_setzero_si128();
- __m128i vsum = _mm_setzero_si128();
- __m128i vsse = _mm_setzero_si128();
+ const __m128i s = _mm_loadu_si128((const __m128i *)src);
+ const __m128i r = _mm_loadu_si128((const __m128i *)ref);
+ const __m128i src0 = _mm_unpacklo_epi8(s, zero);
+ const __m128i ref0 = _mm_unpacklo_epi8(r, zero);
+ const __m128i src1 = _mm_unpackhi_epi8(s, zero);
+ const __m128i ref1 = _mm_unpackhi_epi8(r, zero);
+
+ variance_kernel_sse2(src0, ref0, sse, sum);
+ variance_kernel_sse2(src1, ref1, sse, sum);
+}
+
+static INLINE void variance16_sse2(const uint8_t *src, const int src_stride,
+ const uint8_t *ref, const int ref_stride,
+ const int h, __m128i *const sse,
+ __m128i *const sum) {
int i;
- for (i = 0; i < 16; ++i) {
- const __m128i s = _mm_loadu_si128((const __m128i *)src);
- const __m128i r = _mm_loadu_si128((const __m128i *)ref);
+ assert(h <= 64); // May overflow for larger height.
+ *sse = _mm_setzero_si128();
+ *sum = _mm_setzero_si128();
- const __m128i src0 = _mm_unpacklo_epi8(s, zero);
- const __m128i ref0 = _mm_unpacklo_epi8(r, zero);
- const __m128i diff0 = _mm_sub_epi16(src0, ref0);
+ for (i = 0; i < h; ++i) {
+ variance16_kernel_sse2(src, ref, sse, sum);
+ src += src_stride;
+ ref += ref_stride;
+ }
+}
- const __m128i src1 = _mm_unpackhi_epi8(s, zero);
- const __m128i ref1 = _mm_unpackhi_epi8(r, zero);
- const __m128i diff1 = _mm_sub_epi16(src1, ref1);
+static INLINE void variance32_sse2(const uint8_t *src, const int src_stride,
+ const uint8_t *ref, const int ref_stride,
+ const int h, __m128i *const sse,
+ __m128i *const sum) {
+ int i;
- vsum = _mm_add_epi16(vsum, diff0);
- vsum = _mm_add_epi16(vsum, diff1);
- vsse = _mm_add_epi32(vsse, _mm_madd_epi16(diff0, diff0));
- vsse = _mm_add_epi32(vsse, _mm_madd_epi16(diff1, diff1));
+ assert(h <= 32); // May overflow for larger height.
+ // Don't initialize sse here since it's an accumulation.
+ *sum = _mm_setzero_si128();
+ for (i = 0; i < h; ++i) {
+ variance16_kernel_sse2(src + 0, ref + 0, sse, sum);
+ variance16_kernel_sse2(src + 16, ref + 16, sse, sum);
src += src_stride;
ref += ref_stride;
}
+}
- // sum
- vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 8));
- vsum = _mm_add_epi16(vsum, _mm_srli_si128(vsum, 4));
- *sum =
- (int16_t)_mm_extract_epi16(vsum, 0) + (int16_t)_mm_extract_epi16(vsum, 1);
-
- // sse
- vsse = _mm_add_epi32(vsse, _mm_srli_si128(vsse, 8));
- vsse = _mm_add_epi32(vsse, _mm_srli_si128(vsse, 4));
- *sse = _mm_cvtsi128_si32(vsse);
-}
-
-static void variance_sse2(const unsigned char *src, int src_stride,
- const unsigned char *ref, int ref_stride, int w,
- int h, unsigned int *sse, int *sum,
- getNxMvar_fn_t var_fn, int block_size) {
- int i, j;
-
- *sse = 0;
- *sum = 0;
-
- for (i = 0; i < h; i += block_size) {
- for (j = 0; j < w; j += block_size) {
- unsigned int sse0;
- int sum0;
- var_fn(src + src_stride * i + j, src_stride, ref + ref_stride * i + j,
- ref_stride, &sse0, &sum0);
- *sse += sse0;
- *sum += sum0;
- }
+static INLINE void variance64_sse2(const uint8_t *src, const int src_stride,
+ const uint8_t *ref, const int ref_stride,
+ const int h, __m128i *const sse,
+ __m128i *const sum) {
+ int i;
+
+ assert(h <= 16); // May overflow for larger height.
+ // Don't initialize sse here since it's an accumulation.
+ *sum = _mm_setzero_si128();
+
+ for (i = 0; i < h; ++i) {
+ variance16_kernel_sse2(src + 0, ref + 0, sse, sum);
+ variance16_kernel_sse2(src + 16, ref + 16, sse, sum);
+ variance16_kernel_sse2(src + 32, ref + 32, sse, sum);
+ variance16_kernel_sse2(src + 48, ref + 48, sse, sum);
+ src += src_stride;
+ ref += ref_stride;
}
}
-unsigned int vpx_variance4x4_sse2(const unsigned char *src, int src_stride,
- const unsigned char *ref, int ref_stride,
+void vpx_get8x8var_sse2(const uint8_t *src, int src_stride, const uint8_t *ref,
+ int ref_stride, unsigned int *sse, int *sum) {
+ __m128i vsse, vsum;
+ variance8_sse2(src, src_stride, ref, ref_stride, 8, &vsse, &vsum);
+ variance_final_128_pel_sse2(vsse, vsum, sse, sum);
+}
+
+void vpx_get16x16var_sse2(const uint8_t *src, int src_stride,
+ const uint8_t *ref, int ref_stride, unsigned int *sse,
+ int *sum) {
+ __m128i vsse, vsum;
+ variance16_sse2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
+ variance_final_256_pel_sse2(vsse, vsum, sse, sum);
+}
+
+unsigned int vpx_variance4x4_sse2(const uint8_t *src, int src_stride,
+ const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- get4x4var_sse2(src, src_stride, ref, ref_stride, sse, &sum);
+ variance4_sse2(src, src_stride, ref, ref_stride, 4, &vsse, &vsum);
+ variance_final_128_pel_sse2(vsse, vsum, sse, &sum);
return *sse - ((sum * sum) >> 4);
}
-unsigned int vpx_variance8x4_sse2(const uint8_t *src, int src_stride,
+unsigned int vpx_variance4x8_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 8, 4, sse, &sum,
- get4x4var_sse2, 4);
+ variance4_sse2(src, src_stride, ref, ref_stride, 8, &vsse, &vsum);
+ variance_final_128_pel_sse2(vsse, vsum, sse, &sum);
return *sse - ((sum * sum) >> 5);
}
-unsigned int vpx_variance4x8_sse2(const uint8_t *src, int src_stride,
+unsigned int vpx_variance8x4_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 4, 8, sse, &sum,
- get4x4var_sse2, 4);
+ variance8_sse2(src, src_stride, ref, ref_stride, 4, &vsse, &vsum);
+ variance_final_128_pel_sse2(vsse, vsum, sse, &sum);
return *sse - ((sum * sum) >> 5);
}
-unsigned int vpx_variance8x8_sse2(const unsigned char *src, int src_stride,
- const unsigned char *ref, int ref_stride,
+unsigned int vpx_variance8x8_sse2(const uint8_t *src, int src_stride,
+ const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- vpx_get8x8var_sse2(src, src_stride, ref, ref_stride, sse, &sum);
+ variance8_sse2(src, src_stride, ref, ref_stride, 8, &vsse, &vsum);
+ variance_final_128_pel_sse2(vsse, vsum, sse, &sum);
return *sse - ((sum * sum) >> 6);
}
-unsigned int vpx_variance16x8_sse2(const unsigned char *src, int src_stride,
- const unsigned char *ref, int ref_stride,
+unsigned int vpx_variance8x16_sse2(const uint8_t *src, int src_stride,
+ const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 16, 8, sse, &sum,
- vpx_get8x8var_sse2, 8);
+ variance8_sse2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
+ variance_final_128_pel_sse2(vsse, vsum, sse, &sum);
return *sse - ((sum * sum) >> 7);
}
-unsigned int vpx_variance8x16_sse2(const unsigned char *src, int src_stride,
- const unsigned char *ref, int ref_stride,
+unsigned int vpx_variance16x8_sse2(const uint8_t *src, int src_stride,
+ const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 8, 16, sse, &sum,
- vpx_get8x8var_sse2, 8);
+ variance16_sse2(src, src_stride, ref, ref_stride, 8, &vsse, &vsum);
+ variance_final_128_pel_sse2(vsse, vsum, sse, &sum);
return *sse - ((sum * sum) >> 7);
}
-unsigned int vpx_variance16x16_sse2(const unsigned char *src, int src_stride,
- const unsigned char *ref, int ref_stride,
+unsigned int vpx_variance16x16_sse2(const uint8_t *src, int src_stride,
+ const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- vpx_get16x16var_sse2(src, src_stride, ref, ref_stride, sse, &sum);
+ variance16_sse2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
+ variance_final_256_pel_sse2(vsse, vsum, sse, &sum);
return *sse - (uint32_t)(((int64_t)sum * sum) >> 8);
}
-unsigned int vpx_variance32x32_sse2(const uint8_t *src, int src_stride,
+unsigned int vpx_variance16x32_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse, vsum;
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 32, 32, sse, &sum,
- vpx_get16x16var_sse2, 16);
- return *sse - (unsigned int)(((int64_t)sum * sum) >> 10);
+ variance16_sse2(src, src_stride, ref, ref_stride, 32, &vsse, &vsum);
+ variance_final_512_pel_sse2(vsse, vsum, sse, &sum);
+ return *sse - (unsigned int)(((int64_t)sum * sum) >> 9);
}
unsigned int vpx_variance32x16_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse = _mm_setzero_si128();
+ __m128i vsum;
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 32, 16, sse, &sum,
- vpx_get16x16var_sse2, 16);
+ variance32_sse2(src, src_stride, ref, ref_stride, 16, &vsse, &vsum);
+ variance_final_512_pel_sse2(vsse, vsum, sse, &sum);
return *sse - (unsigned int)(((int64_t)sum * sum) >> 9);
}
-unsigned int vpx_variance16x32_sse2(const uint8_t *src, int src_stride,
+unsigned int vpx_variance32x32_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse = _mm_setzero_si128();
+ __m128i vsum;
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 16, 32, sse, &sum,
- vpx_get16x16var_sse2, 16);
- return *sse - (unsigned int)(((int64_t)sum * sum) >> 9);
+ variance32_sse2(src, src_stride, ref, ref_stride, 32, &vsse, &vsum);
+ *sse = add32x4_sse2(vsse);
+ sum = sum_final_sse2(vsum);
+ return *sse - (unsigned int)(((int64_t)sum * sum) >> 10);
}
-unsigned int vpx_variance64x64_sse2(const uint8_t *src, int src_stride,
+unsigned int vpx_variance32x64_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse = _mm_setzero_si128();
+ __m128i vsum = _mm_setzero_si128();
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 64, 64, sse, &sum,
- vpx_get16x16var_sse2, 16);
- return *sse - (unsigned int)(((int64_t)sum * sum) >> 12);
+ int i = 0;
+
+ for (i = 0; i < 2; i++) {
+ __m128i vsum16;
+ variance32_sse2(src + 32 * i * src_stride, src_stride,
+ ref + 32 * i * ref_stride, ref_stride, 32, &vsse, &vsum16);
+ vsum = _mm_add_epi32(vsum, sum_to_32bit_sse2(vsum16));
+ }
+ *sse = add32x4_sse2(vsse);
+ sum = add32x4_sse2(vsum);
+ return *sse - (unsigned int)(((int64_t)sum * sum) >> 11);
}
unsigned int vpx_variance64x32_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse = _mm_setzero_si128();
+ __m128i vsum = _mm_setzero_si128();
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 64, 32, sse, &sum,
- vpx_get16x16var_sse2, 16);
+ int i = 0;
+
+ for (i = 0; i < 2; i++) {
+ __m128i vsum16;
+ variance64_sse2(src + 16 * i * src_stride, src_stride,
+ ref + 16 * i * ref_stride, ref_stride, 16, &vsse, &vsum16);
+ vsum = _mm_add_epi32(vsum, sum_to_32bit_sse2(vsum16));
+ }
+ *sse = add32x4_sse2(vsse);
+ sum = add32x4_sse2(vsum);
return *sse - (unsigned int)(((int64_t)sum * sum) >> 11);
}
-unsigned int vpx_variance32x64_sse2(const uint8_t *src, int src_stride,
+unsigned int vpx_variance64x64_sse2(const uint8_t *src, int src_stride,
const uint8_t *ref, int ref_stride,
unsigned int *sse) {
+ __m128i vsse = _mm_setzero_si128();
+ __m128i vsum = _mm_setzero_si128();
int sum;
- variance_sse2(src, src_stride, ref, ref_stride, 32, 64, sse, &sum,
- vpx_get16x16var_sse2, 16);
- return *sse - (unsigned int)(((int64_t)sum * sum) >> 11);
+ int i = 0;
+
+ for (i = 0; i < 4; i++) {
+ __m128i vsum16;
+ variance64_sse2(src + 16 * i * src_stride, src_stride,
+ ref + 16 * i * ref_stride, ref_stride, 16, &vsse, &vsum16);
+ vsum = _mm_add_epi32(vsum, sum_to_32bit_sse2(vsum16));
+ }
+ *sse = add32x4_sse2(vsse);
+ sum = add32x4_sse2(vsum);
+ return *sse - (unsigned int)(((int64_t)sum * sum) >> 12);
}
unsigned int vpx_mse8x8_sse2(const uint8_t *src, int src_stride,
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