| /* | 
 |  * Copyright (c) 2016, Alliance for Open Media. All rights reserved | 
 |  * | 
 |  * This source code is subject to the terms of the BSD 2 Clause License and | 
 |  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License | 
 |  * was not distributed with this source code in the LICENSE file, you can | 
 |  * obtain it at www.aomedia.org/license/software. If the Alliance for Open | 
 |  * Media Patent License 1.0 was not distributed with this source code in the | 
 |  * PATENTS file, you can obtain it at www.aomedia.org/license/patent. | 
 |  */ | 
 |  | 
 | #include <assert.h> | 
 | #include <emmintrin.h>  // SSE2 | 
 |  | 
 | #include "config/aom_config.h" | 
 | #include "config/aom_dsp_rtcd.h" | 
 | #include "config/av1_rtcd.h" | 
 |  | 
 | #include "aom_dsp/x86/synonyms.h" | 
 |  | 
 | #include "aom_ports/mem.h" | 
 |  | 
 | #include "av1/common/filter.h" | 
 | #include "av1/common/onyxc_int.h" | 
 | #include "av1/common/reconinter.h" | 
 |  | 
 | unsigned int aom_get_mb_ss_sse2(const int16_t *src) { | 
 |   __m128i vsum = _mm_setzero_si128(); | 
 |   int i; | 
 |  | 
 |   for (i = 0; i < 32; ++i) { | 
 |     const __m128i v = xx_loadu_128(src); | 
 |     vsum = _mm_add_epi32(vsum, _mm_madd_epi16(v, v)); | 
 |     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); | 
 | } | 
 |  | 
 | 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)); | 
 |   return _mm_unpacklo_epi8(_mm_unpacklo_epi32(p0, p1), _mm_setzero_si128()); | 
 | } | 
 |  | 
 | static INLINE __m128i load8_8to16_sse2(const uint8_t *const p) { | 
 |   const __m128i p0 = _mm_loadl_epi64((const __m128i *)p); | 
 |   return _mm_unpacklo_epi8(p0, _mm_setzero_si128()); | 
 | } | 
 |  | 
 | // Accumulate 4 32bit numbers in val to 1 32bit number | 
 | 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); | 
 | } | 
 |  | 
 | // Accumulate 8 16bit in sum to 4 32bit number | 
 | 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); | 
 | } | 
 |  | 
 | 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() | 
 | // diff sum of 128 pixels can still fit in 16bit integer | 
 | static INLINE void variance_final_128_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_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); | 
 |  | 
 |   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); | 
 | } | 
 |  | 
 | // 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); | 
 | } | 
 |  | 
 | // Can handle 1024 pixels' diff sum (such as 32x32) | 
 | static INLINE void variance_final_1024_pel_sse2(__m128i vsse, __m128i vsum, | 
 |                                                 unsigned int *const sse, | 
 |                                                 int *const sum) { | 
 |   *sse = add32x4_sse2(vsse); | 
 |  | 
 |   vsum = sum_to_32bit_sse2(vsum); | 
 |   *sum = add32x4_sse2(vsum); | 
 | } | 
 |  | 
 | 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) { | 
 |   assert(h <= 256);  // May overflow for larger height. | 
 |   *sum = _mm_setzero_si128(); | 
 |  | 
 |   for (int 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; | 
 |   } | 
 | } | 
 |  | 
 | 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) { | 
 |   assert(h <= 128);  // May overflow for larger height. | 
 |   *sum = _mm_setzero_si128(); | 
 |   for (int i = 0; i < h; i++) { | 
 |     const __m128i s = load8_8to16_sse2(src); | 
 |     const __m128i r = load8_8to16_sse2(ref); | 
 |  | 
 |     variance_kernel_sse2(s, r, sse, sum); | 
 |     src += src_stride; | 
 |     ref += ref_stride; | 
 |   } | 
 | } | 
 |  | 
 | 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(); | 
 |   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) { | 
 |   assert(h <= 64);  // May overflow for larger height. | 
 |   *sum = _mm_setzero_si128(); | 
 |  | 
 |   for (int i = 0; i < h; ++i) { | 
 |     variance16_kernel_sse2(src, ref, sse, sum); | 
 |     src += src_stride; | 
 |     ref += ref_stride; | 
 |   } | 
 | } | 
 |  | 
 | 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) { | 
 |   assert(h <= 32);  // May overflow for larger height. | 
 |   // Don't initialize sse here since it's an accumulation. | 
 |   *sum = _mm_setzero_si128(); | 
 |  | 
 |   for (int 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; | 
 |   } | 
 | } | 
 |  | 
 | 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) { | 
 |   assert(h <= 16);  // May overflow for larger height. | 
 |   *sum = _mm_setzero_si128(); | 
 |  | 
 |   for (int 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; | 
 |   } | 
 | } | 
 |  | 
 | static INLINE void variance128_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) { | 
 |   assert(h <= 8);  // May overflow for larger height. | 
 |   *sum = _mm_setzero_si128(); | 
 |  | 
 |   for (int i = 0; i < h; ++i) { | 
 |     for (int j = 0; j < 4; ++j) { | 
 |       const int offset0 = j << 5; | 
 |       const int offset1 = offset0 + 16; | 
 |       variance16_kernel_sse2(src + offset0, ref + offset0, sse, sum); | 
 |       variance16_kernel_sse2(src + offset1, ref + offset1, sse, sum); | 
 |     } | 
 |     src += src_stride; | 
 |     ref += ref_stride; | 
 |   } | 
 | } | 
 |  | 
 | #define AOM_VAR_NO_LOOP_SSE2(bw, bh, bits, max_pixels)                        \ | 
 |   unsigned int aom_variance##bw##x##bh##_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 = 0;                                                              \ | 
 |     variance##bw##_sse2(src, src_stride, ref, ref_stride, bh, &vsse, &vsum);  \ | 
 |     variance_final_##max_pixels##_pel_sse2(vsse, vsum, sse, &sum);            \ | 
 |     assert(sum <= 255 * bw * bh);                                             \ | 
 |     assert(sum >= -255 * bw * bh);                                            \ | 
 |     return *sse - (uint32_t)(((int64_t)sum * sum) >> bits);                   \ | 
 |   } | 
 |  | 
 | AOM_VAR_NO_LOOP_SSE2(4, 4, 4, 128); | 
 | AOM_VAR_NO_LOOP_SSE2(4, 8, 5, 128); | 
 | AOM_VAR_NO_LOOP_SSE2(4, 16, 6, 128); | 
 |  | 
 | AOM_VAR_NO_LOOP_SSE2(8, 4, 5, 128); | 
 | AOM_VAR_NO_LOOP_SSE2(8, 8, 6, 128); | 
 | AOM_VAR_NO_LOOP_SSE2(8, 16, 7, 128); | 
 | AOM_VAR_NO_LOOP_SSE2(8, 32, 8, 256); | 
 |  | 
 | AOM_VAR_NO_LOOP_SSE2(16, 4, 6, 128); | 
 | AOM_VAR_NO_LOOP_SSE2(16, 8, 7, 128); | 
 | AOM_VAR_NO_LOOP_SSE2(16, 16, 8, 256); | 
 | AOM_VAR_NO_LOOP_SSE2(16, 32, 9, 512); | 
 | AOM_VAR_NO_LOOP_SSE2(16, 64, 10, 1024); | 
 |  | 
 | AOM_VAR_NO_LOOP_SSE2(32, 8, 8, 256); | 
 | AOM_VAR_NO_LOOP_SSE2(32, 16, 9, 512); | 
 | AOM_VAR_NO_LOOP_SSE2(32, 32, 10, 1024); | 
 |  | 
 | #define AOM_VAR_LOOP_SSE2(bw, bh, bits, uh)                                   \ | 
 |   unsigned int aom_variance##bw##x##bh##_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();                                       \ | 
 |     for (int i = 0; i < (bh / uh); ++i) {                                     \ | 
 |       __m128i vsum16;                                                         \ | 
 |       variance##bw##_sse2(src, src_stride, ref, ref_stride, uh, &vsse,        \ | 
 |                           &vsum16);                                           \ | 
 |       vsum = _mm_add_epi32(vsum, sum_to_32bit_sse2(vsum16));                  \ | 
 |       src += (src_stride * uh);                                               \ | 
 |       ref += (ref_stride * uh);                                               \ | 
 |     }                                                                         \ | 
 |     *sse = add32x4_sse2(vsse);                                                \ | 
 |     int sum = add32x4_sse2(vsum);                                             \ | 
 |     assert(sum <= 255 * bw * bh);                                             \ | 
 |     assert(sum >= -255 * bw * bh);                                            \ | 
 |     return *sse - (uint32_t)(((int64_t)sum * sum) >> bits);                   \ | 
 |   } | 
 |  | 
 | AOM_VAR_LOOP_SSE2(32, 64, 11, 32);  // 32x32 * ( 64/32 ) | 
 |  | 
 | AOM_VAR_NO_LOOP_SSE2(64, 16, 10, 1024); | 
 | AOM_VAR_LOOP_SSE2(64, 32, 11, 16);   // 64x16 * ( 32/16 ) | 
 | AOM_VAR_LOOP_SSE2(64, 64, 12, 16);   // 64x16 * ( 64/16 ) | 
 | AOM_VAR_LOOP_SSE2(64, 128, 13, 16);  // 64x16 * ( 128/16 ) | 
 |  | 
 | AOM_VAR_LOOP_SSE2(128, 64, 13, 8);   // 128x8 * ( 64/8 ) | 
 | AOM_VAR_LOOP_SSE2(128, 128, 14, 8);  // 128x8 * ( 128/8 ) | 
 |  | 
 | unsigned int aom_mse8x8_sse2(const uint8_t *src, int src_stride, | 
 |                              const uint8_t *ref, int ref_stride, | 
 |                              unsigned int *sse) { | 
 |   aom_variance8x8_sse2(src, src_stride, ref, ref_stride, sse); | 
 |   return *sse; | 
 | } | 
 |  | 
 | unsigned int aom_mse8x16_sse2(const uint8_t *src, int src_stride, | 
 |                               const uint8_t *ref, int ref_stride, | 
 |                               unsigned int *sse) { | 
 |   aom_variance8x16_sse2(src, src_stride, ref, ref_stride, sse); | 
 |   return *sse; | 
 | } | 
 |  | 
 | unsigned int aom_mse16x8_sse2(const uint8_t *src, int src_stride, | 
 |                               const uint8_t *ref, int ref_stride, | 
 |                               unsigned int *sse) { | 
 |   aom_variance16x8_sse2(src, src_stride, ref, ref_stride, sse); | 
 |   return *sse; | 
 | } | 
 |  | 
 | unsigned int aom_mse16x16_sse2(const uint8_t *src, int src_stride, | 
 |                                const uint8_t *ref, int ref_stride, | 
 |                                unsigned int *sse) { | 
 |   aom_variance16x16_sse2(src, src_stride, ref, ref_stride, sse); | 
 |   return *sse; | 
 | } | 
 |  | 
 | // The 2 unused parameters are place holders for PIC enabled build. | 
 | // These definitions are for functions defined in subpel_variance.asm | 
 | #define DECL(w, opt)                                                           \ | 
 |   int aom_sub_pixel_variance##w##xh_##opt(                                     \ | 
 |       const uint8_t *src, ptrdiff_t src_stride, int x_offset, int y_offset,    \ | 
 |       const uint8_t *dst, ptrdiff_t dst_stride, int height, unsigned int *sse, \ | 
 |       void *unused0, void *unused) | 
 | #define DECLS(opt) \ | 
 |   DECL(4, opt);    \ | 
 |   DECL(8, opt);    \ | 
 |   DECL(16, opt) | 
 |  | 
 | DECLS(sse2); | 
 | DECLS(ssse3); | 
 | #undef DECLS | 
 | #undef DECL | 
 |  | 
 | #define FN(w, h, wf, wlog2, hlog2, opt, cast_prod, cast)                      \ | 
 |   unsigned int aom_sub_pixel_variance##w##x##h##_##opt(                       \ | 
 |       const uint8_t *src, int src_stride, int x_offset, int y_offset,         \ | 
 |       const uint8_t *dst, int dst_stride, unsigned int *sse_ptr) {            \ | 
 |     /*Avoid overflow in helper by capping height.*/                           \ | 
 |     const int hf = AOMMIN(h, 64);                                             \ | 
 |     unsigned int sse = 0;                                                     \ | 
 |     int se = 0;                                                               \ | 
 |     for (int i = 0; i < (w / wf); ++i) {                                      \ | 
 |       const uint8_t *src_ptr = src;                                           \ | 
 |       const uint8_t *dst_ptr = dst;                                           \ | 
 |       for (int j = 0; j < (h / hf); ++j) {                                    \ | 
 |         unsigned int sse2;                                                    \ | 
 |         const int se2 = aom_sub_pixel_variance##wf##xh_##opt(                 \ | 
 |             src_ptr, src_stride, x_offset, y_offset, dst_ptr, dst_stride, hf, \ | 
 |             &sse2, NULL, NULL);                                               \ | 
 |         dst_ptr += hf * dst_stride;                                           \ | 
 |         src_ptr += hf * src_stride;                                           \ | 
 |         se += se2;                                                            \ | 
 |         sse += sse2;                                                          \ | 
 |       }                                                                       \ | 
 |       src += wf;                                                              \ | 
 |       dst += wf;                                                              \ | 
 |     }                                                                         \ | 
 |     *sse_ptr = sse;                                                           \ | 
 |     return sse - (unsigned int)(cast_prod(cast se * se) >> (wlog2 + hlog2));  \ | 
 |   } | 
 |  | 
 | #define FNS(opt)                                     \ | 
 |   FN(128, 128, 16, 7, 7, opt, (int64_t), (int64_t)); \ | 
 |   FN(128, 64, 16, 7, 6, opt, (int64_t), (int64_t));  \ | 
 |   FN(64, 128, 16, 6, 7, opt, (int64_t), (int64_t));  \ | 
 |   FN(64, 64, 16, 6, 6, opt, (int64_t), (int64_t));   \ | 
 |   FN(64, 32, 16, 6, 5, opt, (int64_t), (int64_t));   \ | 
 |   FN(32, 64, 16, 5, 6, opt, (int64_t), (int64_t));   \ | 
 |   FN(32, 32, 16, 5, 5, opt, (int64_t), (int64_t));   \ | 
 |   FN(32, 16, 16, 5, 4, opt, (int64_t), (int64_t));   \ | 
 |   FN(16, 32, 16, 4, 5, opt, (int64_t), (int64_t));   \ | 
 |   FN(16, 16, 16, 4, 4, opt, (uint32_t), (int64_t));  \ | 
 |   FN(16, 8, 16, 4, 3, opt, (int32_t), (int32_t));    \ | 
 |   FN(8, 16, 8, 3, 4, opt, (int32_t), (int32_t));     \ | 
 |   FN(8, 8, 8, 3, 3, opt, (int32_t), (int32_t));      \ | 
 |   FN(8, 4, 8, 3, 2, opt, (int32_t), (int32_t));      \ | 
 |   FN(4, 8, 4, 2, 3, opt, (int32_t), (int32_t));      \ | 
 |   FN(4, 4, 4, 2, 2, opt, (int32_t), (int32_t));      \ | 
 |   FN(4, 16, 4, 2, 4, opt, (int32_t), (int32_t));     \ | 
 |   FN(16, 4, 16, 4, 2, opt, (int32_t), (int32_t));    \ | 
 |   FN(8, 32, 8, 3, 5, opt, (uint32_t), (int64_t));    \ | 
 |   FN(32, 8, 16, 5, 3, opt, (uint32_t), (int64_t));   \ | 
 |   FN(16, 64, 16, 4, 6, opt, (int64_t), (int64_t));   \ | 
 |   FN(64, 16, 16, 6, 4, opt, (int64_t), (int64_t)) | 
 |  | 
 | FNS(sse2); | 
 | FNS(ssse3); | 
 |  | 
 | #undef FNS | 
 | #undef FN | 
 |  | 
 | // The 2 unused parameters are place holders for PIC enabled build. | 
 | #define DECL(w, opt)                                                        \ | 
 |   int aom_sub_pixel_avg_variance##w##xh_##opt(                              \ | 
 |       const uint8_t *src, ptrdiff_t src_stride, int x_offset, int y_offset, \ | 
 |       const uint8_t *dst, ptrdiff_t dst_stride, const uint8_t *sec,         \ | 
 |       ptrdiff_t sec_stride, int height, unsigned int *sse, void *unused0,   \ | 
 |       void *unused) | 
 | #define DECLS(opt) \ | 
 |   DECL(4, opt);    \ | 
 |   DECL(8, opt);    \ | 
 |   DECL(16, opt) | 
 |  | 
 | DECLS(sse2); | 
 | DECLS(ssse3); | 
 | #undef DECL | 
 | #undef DECLS | 
 |  | 
 | #define FN(w, h, wf, wlog2, hlog2, opt, cast_prod, cast)                     \ | 
 |   unsigned int aom_sub_pixel_avg_variance##w##x##h##_##opt(                  \ | 
 |       const uint8_t *src, int src_stride, int x_offset, int y_offset,        \ | 
 |       const uint8_t *dst, int dst_stride, unsigned int *sse_ptr,             \ | 
 |       const uint8_t *sec) {                                                  \ | 
 |     /*Avoid overflow in helper by capping height.*/                          \ | 
 |     const int hf = AOMMIN(h, 64);                                            \ | 
 |     unsigned int sse = 0;                                                    \ | 
 |     int se = 0;                                                              \ | 
 |     for (int i = 0; i < (w / wf); ++i) {                                     \ | 
 |       const uint8_t *src_ptr = src;                                          \ | 
 |       const uint8_t *dst_ptr = dst;                                          \ | 
 |       const uint8_t *sec_ptr = sec;                                          \ | 
 |       for (int j = 0; j < (h / hf); ++j) {                                   \ | 
 |         unsigned int sse2;                                                   \ | 
 |         const int se2 = aom_sub_pixel_avg_variance##wf##xh_##opt(            \ | 
 |             src_ptr, src_stride, x_offset, y_offset, dst_ptr, dst_stride,    \ | 
 |             sec_ptr, w, hf, &sse2, NULL, NULL);                              \ | 
 |         dst_ptr += hf * dst_stride;                                          \ | 
 |         src_ptr += hf * src_stride;                                          \ | 
 |         sec_ptr += hf * w;                                                   \ | 
 |         se += se2;                                                           \ | 
 |         sse += sse2;                                                         \ | 
 |       }                                                                      \ | 
 |       src += wf;                                                             \ | 
 |       dst += wf;                                                             \ | 
 |       sec += wf;                                                             \ | 
 |     }                                                                        \ | 
 |     *sse_ptr = sse;                                                          \ | 
 |     return sse - (unsigned int)(cast_prod(cast se * se) >> (wlog2 + hlog2)); \ | 
 |   } | 
 |  | 
 | #define FNS(opt)                                     \ | 
 |   FN(128, 128, 16, 7, 7, opt, (int64_t), (int64_t)); \ | 
 |   FN(128, 64, 16, 7, 6, opt, (int64_t), (int64_t));  \ | 
 |   FN(64, 128, 16, 6, 7, opt, (int64_t), (int64_t));  \ | 
 |   FN(64, 64, 16, 6, 6, opt, (int64_t), (int64_t));   \ | 
 |   FN(64, 32, 16, 6, 5, opt, (int64_t), (int64_t));   \ | 
 |   FN(32, 64, 16, 5, 6, opt, (int64_t), (int64_t));   \ | 
 |   FN(32, 32, 16, 5, 5, opt, (int64_t), (int64_t));   \ | 
 |   FN(32, 16, 16, 5, 4, opt, (int64_t), (int64_t));   \ | 
 |   FN(16, 32, 16, 4, 5, opt, (int64_t), (int64_t));   \ | 
 |   FN(16, 16, 16, 4, 4, opt, (uint32_t), (int64_t));  \ | 
 |   FN(16, 8, 16, 4, 3, opt, (uint32_t), (int32_t));   \ | 
 |   FN(8, 16, 8, 3, 4, opt, (uint32_t), (int32_t));    \ | 
 |   FN(8, 8, 8, 3, 3, opt, (uint32_t), (int32_t));     \ | 
 |   FN(8, 4, 8, 3, 2, opt, (uint32_t), (int32_t));     \ | 
 |   FN(4, 8, 4, 2, 3, opt, (uint32_t), (int32_t));     \ | 
 |   FN(4, 4, 4, 2, 2, opt, (uint32_t), (int32_t));     \ | 
 |   FN(4, 16, 4, 2, 4, opt, (int32_t), (int32_t));     \ | 
 |   FN(16, 4, 16, 4, 2, opt, (int32_t), (int32_t));    \ | 
 |   FN(8, 32, 8, 3, 5, opt, (uint32_t), (int64_t));    \ | 
 |   FN(32, 8, 16, 5, 3, opt, (uint32_t), (int64_t));   \ | 
 |   FN(16, 64, 16, 4, 6, opt, (int64_t), (int64_t));   \ | 
 |   FN(64, 16, 16, 6, 4, opt, (int64_t), (int64_t)) | 
 |  | 
 | FNS(sse2); | 
 | FNS(ssse3); | 
 |  | 
 | #undef FNS | 
 | #undef FN | 
 |  | 
 | void aom_upsampled_pred_sse2(MACROBLOCKD *xd, const struct AV1Common *const cm, | 
 |                              int mi_row, int mi_col, const MV *const mv, | 
 |                              uint8_t *comp_pred, int width, int height, | 
 |                              int subpel_x_q3, int subpel_y_q3, | 
 |                              const uint8_t *ref, int ref_stride) { | 
 |   // expect xd == NULL only in tests | 
 |   if (xd != NULL) { | 
 |     const MB_MODE_INFO *mi = xd->mi[0]; | 
 |     const int ref_num = 0; | 
 |     const int is_intrabc = is_intrabc_block(mi); | 
 |     const struct scale_factors *const sf = | 
 |         is_intrabc ? &cm->sf_identity : &xd->block_refs[ref_num]->sf; | 
 |     const int is_scaled = av1_is_scaled(sf); | 
 |  | 
 |     if (is_scaled) { | 
 |       // Note: This is mostly a copy from the >=8X8 case in | 
 |       // build_inter_predictors() function, with some small tweaks. | 
 |  | 
 |       // Some assumptions. | 
 |       const int plane = 0; | 
 |  | 
 |       // Get pre-requisites. | 
 |       const struct macroblockd_plane *const pd = &xd->plane[plane]; | 
 |       const int ssx = pd->subsampling_x; | 
 |       const int ssy = pd->subsampling_y; | 
 |       assert(ssx == 0 && ssy == 0); | 
 |       const struct buf_2d *const dst_buf = &pd->dst; | 
 |       const struct buf_2d *const pre_buf = | 
 |           is_intrabc ? dst_buf : &pd->pre[ref_num]; | 
 |       const int mi_x = mi_col * MI_SIZE; | 
 |       const int mi_y = mi_row * MI_SIZE; | 
 |  | 
 |       // Calculate subpel_x/y and x/y_step. | 
 |       const int row_start = 0;  // Because ss_y is 0. | 
 |       const int col_start = 0;  // Because ss_x is 0. | 
 |       const int pre_x = (mi_x + MI_SIZE * col_start) >> ssx; | 
 |       const int pre_y = (mi_y + MI_SIZE * row_start) >> ssy; | 
 |       int orig_pos_y = pre_y << SUBPEL_BITS; | 
 |       orig_pos_y += mv->row * (1 << (1 - ssy)); | 
 |       int orig_pos_x = pre_x << SUBPEL_BITS; | 
 |       orig_pos_x += mv->col * (1 << (1 - ssx)); | 
 |       int pos_y = sf->scale_value_y(orig_pos_y, sf); | 
 |       int pos_x = sf->scale_value_x(orig_pos_x, sf); | 
 |       pos_x += SCALE_EXTRA_OFF; | 
 |       pos_y += SCALE_EXTRA_OFF; | 
 |  | 
 |       const int top = -AOM_LEFT_TOP_MARGIN_SCALED(ssy); | 
 |       const int left = -AOM_LEFT_TOP_MARGIN_SCALED(ssx); | 
 |       const int bottom = (pre_buf->height + AOM_INTERP_EXTEND) | 
 |                          << SCALE_SUBPEL_BITS; | 
 |       const int right = (pre_buf->width + AOM_INTERP_EXTEND) | 
 |                         << SCALE_SUBPEL_BITS; | 
 |       pos_y = clamp(pos_y, top, bottom); | 
 |       pos_x = clamp(pos_x, left, right); | 
 |  | 
 |       const uint8_t *const pre = | 
 |           pre_buf->buf0 + (pos_y >> SCALE_SUBPEL_BITS) * pre_buf->stride + | 
 |           (pos_x >> SCALE_SUBPEL_BITS); | 
 |  | 
 |       const SubpelParams subpel_params = { sf->x_step_q4, sf->y_step_q4, | 
 |                                            pos_x & SCALE_SUBPEL_MASK, | 
 |                                            pos_y & SCALE_SUBPEL_MASK }; | 
 |  | 
 |       // Get warp types. | 
 |       const WarpedMotionParams *const wm = | 
 |           &xd->global_motion[mi->ref_frame[ref_num]]; | 
 |       const int is_global = is_global_mv_block(mi, wm->wmtype); | 
 |       WarpTypesAllowed warp_types; | 
 |       warp_types.global_warp_allowed = is_global; | 
 |       warp_types.local_warp_allowed = mi->motion_mode == WARPED_CAUSAL; | 
 |  | 
 |       // Get convolve parameters. | 
 |       ConvolveParams conv_params = get_conv_params(ref_num, 0, plane, xd->bd); | 
 |       const InterpFilters filters = | 
 |           av1_broadcast_interp_filter(EIGHTTAP_REGULAR); | 
 |  | 
 |       // Get the inter predictor. | 
 |       const int build_for_obmc = 0; | 
 |       av1_make_inter_predictor(pre, pre_buf->stride, comp_pred, width, | 
 |                                &subpel_params, sf, width, height, &conv_params, | 
 |                                filters, &warp_types, mi_x >> pd->subsampling_x, | 
 |                                mi_y >> pd->subsampling_y, plane, ref_num, mi, | 
 |                                build_for_obmc, xd, cm->allow_warped_motion); | 
 |  | 
 |       return; | 
 |     } | 
 |   } | 
 |  | 
 |   const InterpFilterParams filter = | 
 |       av1_get_interp_filter_params_with_block_size(EIGHTTAP_REGULAR, 8); | 
 |  | 
 |   if (!subpel_x_q3 && !subpel_y_q3) { | 
 |     if (width >= 16) { | 
 |       int i; | 
 |       assert(!(width & 15)); | 
 |       /*Read 16 pixels one row at a time.*/ | 
 |       for (i = 0; i < height; i++) { | 
 |         int j; | 
 |         for (j = 0; j < width; j += 16) { | 
 |           xx_storeu_128(comp_pred, xx_loadu_128(ref)); | 
 |           comp_pred += 16; | 
 |           ref += 16; | 
 |         } | 
 |         ref += ref_stride - width; | 
 |       } | 
 |     } else if (width >= 8) { | 
 |       int i; | 
 |       assert(!(width & 7)); | 
 |       assert(!(height & 1)); | 
 |       /*Read 8 pixels two rows at a time.*/ | 
 |       for (i = 0; i < height; i += 2) { | 
 |         __m128i s0 = xx_loadl_64(ref + 0 * ref_stride); | 
 |         __m128i s1 = xx_loadl_64(ref + 1 * ref_stride); | 
 |         xx_storeu_128(comp_pred, _mm_unpacklo_epi64(s0, s1)); | 
 |         comp_pred += 16; | 
 |         ref += 2 * ref_stride; | 
 |       } | 
 |     } else { | 
 |       int i; | 
 |       assert(!(width & 3)); | 
 |       assert(!(height & 3)); | 
 |       /*Read 4 pixels four rows at a time.*/ | 
 |       for (i = 0; i < height; i++) { | 
 |         const __m128i row0 = xx_loadl_64(ref + 0 * ref_stride); | 
 |         const __m128i row1 = xx_loadl_64(ref + 1 * ref_stride); | 
 |         const __m128i row2 = xx_loadl_64(ref + 2 * ref_stride); | 
 |         const __m128i row3 = xx_loadl_64(ref + 3 * ref_stride); | 
 |         const __m128i reg = _mm_unpacklo_epi64(_mm_unpacklo_epi32(row0, row1), | 
 |                                                _mm_unpacklo_epi32(row2, row3)); | 
 |         xx_storeu_128(comp_pred, reg); | 
 |         comp_pred += 16; | 
 |         ref += 4 * ref_stride; | 
 |       } | 
 |     } | 
 |   } else if (!subpel_y_q3) { | 
 |     const int16_t *const kernel = | 
 |         av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1); | 
 |     aom_convolve8_horiz(ref, ref_stride, comp_pred, width, kernel, 16, NULL, -1, | 
 |                         width, height); | 
 |   } else if (!subpel_x_q3) { | 
 |     const int16_t *const kernel = | 
 |         av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1); | 
 |     aom_convolve8_vert(ref, ref_stride, comp_pred, width, NULL, -1, kernel, 16, | 
 |                        width, height); | 
 |   } else { | 
 |     DECLARE_ALIGNED(16, uint8_t, | 
 |                     temp[((MAX_SB_SIZE * 2 + 16) + 16) * MAX_SB_SIZE]); | 
 |     const int16_t *const kernel_x = | 
 |         av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1); | 
 |     const int16_t *const kernel_y = | 
 |         av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1); | 
 |     const int intermediate_height = | 
 |         (((height - 1) * 8 + subpel_y_q3) >> 3) + filter.taps; | 
 |     assert(intermediate_height <= (MAX_SB_SIZE * 2 + 16) + 16); | 
 |     aom_convolve8_horiz(ref - ref_stride * ((filter.taps >> 1) - 1), ref_stride, | 
 |                         temp, MAX_SB_SIZE, kernel_x, 16, NULL, -1, width, | 
 |                         intermediate_height); | 
 |     aom_convolve8_vert(temp + MAX_SB_SIZE * ((filter.taps >> 1) - 1), | 
 |                        MAX_SB_SIZE, comp_pred, width, NULL, -1, kernel_y, 16, | 
 |                        width, height); | 
 |   } | 
 | } | 
 |  | 
 | void aom_comp_avg_upsampled_pred_sse2( | 
 |     MACROBLOCKD *xd, const struct AV1Common *const cm, int mi_row, int mi_col, | 
 |     const MV *const mv, uint8_t *comp_pred, const uint8_t *pred, int width, | 
 |     int height, int subpel_x_q3, int subpel_y_q3, const uint8_t *ref, | 
 |     int ref_stride) { | 
 |   int n; | 
 |   int i; | 
 |   aom_upsampled_pred(xd, cm, mi_row, mi_col, mv, comp_pred, width, height, | 
 |                      subpel_x_q3, subpel_y_q3, ref, ref_stride); | 
 |   /*The total number of pixels must be a multiple of 16 (e.g., 4x4).*/ | 
 |   assert(!(width * height & 15)); | 
 |   n = width * height >> 4; | 
 |   for (i = 0; i < n; i++) { | 
 |     __m128i s0 = xx_loadu_128(comp_pred); | 
 |     __m128i p0 = xx_loadu_128(pred); | 
 |     xx_storeu_128(comp_pred, _mm_avg_epu8(s0, p0)); | 
 |     comp_pred += 16; | 
 |     pred += 16; | 
 |   } | 
 | } |