ref: 5f8ce092bd24f90458ce59d1555535b65839bd20
dir: /vpx_dsp/x86/variance_sse2.c/
/* * Copyright (c) 2010 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * 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" 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(); int i; for (i = 0; i < 32; ++i) { const __m128i v = _mm_loadu_si128((const __m128i *)src); vsum = _mm_add_epi32(vsum, _mm_madd_epi16(v, v)); src += 8; } return add32x4_sse2(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)); 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); 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); } 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; 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; } } 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; 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; } } 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) { int i; assert(h <= 64); // May overflow for larger height. *sse = _mm_setzero_si128(); *sum = _mm_setzero_si128(); for (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) { int i; 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; } } 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; } } 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; 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_variance4x8_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { __m128i vsse, vsum; int sum; 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_variance8x4_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { __m128i vsse, vsum; int sum; 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 uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { __m128i vsse, vsum; int 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_variance8x16_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { __m128i vsse, vsum; int sum; 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_variance16x8_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { __m128i vsse, vsum; int sum; 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 uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { __m128i vsse, vsum; int 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_variance16x32_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { __m128i vsse, vsum; int sum; 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; 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_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; 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_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; 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; 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_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; 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, const uint8_t *ref, int ref_stride, unsigned int *sse) { vpx_variance8x8_sse2(src, src_stride, ref, ref_stride, sse); return *sse; } unsigned int vpx_mse8x16_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { vpx_variance8x16_sse2(src, src_stride, ref, ref_stride, sse); return *sse; } unsigned int vpx_mse16x8_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { vpx_variance16x8_sse2(src, src_stride, ref, ref_stride, sse); return *sse; } unsigned int vpx_mse16x16_sse2(const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, unsigned int *sse) { vpx_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 vpx_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(opt1, opt2) \ DECL(4, opt1); \ DECL(8, opt1); \ DECL(16, opt1) DECLS(sse2, sse2); DECLS(ssse3, ssse3); #undef DECLS #undef DECL #define FN(w, h, wf, wlog2, hlog2, opt, cast_prod, cast) \ unsigned int vpx_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) { \ unsigned int sse; \ int se = vpx_sub_pixel_variance##wf##xh_##opt(src, src_stride, x_offset, \ y_offset, dst, dst_stride, \ h, &sse, NULL, NULL); \ if (w > wf) { \ unsigned int sse2; \ int se2 = vpx_sub_pixel_variance##wf##xh_##opt( \ src + 16, src_stride, x_offset, y_offset, dst + 16, dst_stride, h, \ &sse2, NULL, NULL); \ se += se2; \ sse += sse2; \ if (w > wf * 2) { \ se2 = vpx_sub_pixel_variance##wf##xh_##opt( \ src + 32, src_stride, x_offset, y_offset, dst + 32, dst_stride, h, \ &sse2, NULL, NULL); \ se += se2; \ sse += sse2; \ se2 = vpx_sub_pixel_variance##wf##xh_##opt( \ src + 48, src_stride, x_offset, y_offset, dst + 48, dst_stride, h, \ &sse2, NULL, NULL); \ se += se2; \ sse += sse2; \ } \ } \ *sse_ptr = sse; \ return sse - (unsigned int)(cast_prod(cast se * se) >> (wlog2 + hlog2)); \ } #define FNS(opt1, opt2) \ FN(64, 64, 16, 6, 6, opt1, (int64_t), (int64_t)); \ FN(64, 32, 16, 6, 5, opt1, (int64_t), (int64_t)); \ FN(32, 64, 16, 5, 6, opt1, (int64_t), (int64_t)); \ FN(32, 32, 16, 5, 5, opt1, (int64_t), (int64_t)); \ FN(32, 16, 16, 5, 4, opt1, (int64_t), (int64_t)); \ FN(16, 32, 16, 4, 5, opt1, (int64_t), (int64_t)); \ FN(16, 16, 16, 4, 4, opt1, (uint32_t), (int64_t)); \ FN(16, 8, 16, 4, 3, opt1, (int32_t), (int32_t)); \ FN(8, 16, 8, 3, 4, opt1, (int32_t), (int32_t)); \ FN(8, 8, 8, 3, 3, opt1, (int32_t), (int32_t)); \ FN(8, 4, 8, 3, 2, opt1, (int32_t), (int32_t)); \ FN(4, 8, 4, 2, 3, opt1, (int32_t), (int32_t)); \ FN(4, 4, 4, 2, 2, opt1, (int32_t), (int32_t)) FNS(sse2, sse2); FNS(ssse3, ssse3); #undef FNS #undef FN // The 2 unused parameters are place holders for PIC enabled build. #define DECL(w, opt) \ int vpx_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(opt1, opt2) \ DECL(4, opt1); \ DECL(8, opt1); \ DECL(16, opt1) DECLS(sse2, sse2); DECLS(ssse3, ssse3); #undef DECL #undef DECLS #define FN(w, h, wf, wlog2, hlog2, opt, cast_prod, cast) \ unsigned int vpx_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 *sseptr, \ const uint8_t *sec) { \ unsigned int sse; \ int se = vpx_sub_pixel_avg_variance##wf##xh_##opt( \ src, src_stride, x_offset, y_offset, dst, dst_stride, sec, w, h, &sse, \ NULL, NULL); \ if (w > wf) { \ unsigned int sse2; \ int se2 = vpx_sub_pixel_avg_variance##wf##xh_##opt( \ src + 16, src_stride, x_offset, y_offset, dst + 16, dst_stride, \ sec + 16, w, h, &sse2, NULL, NULL); \ se += se2; \ sse += sse2; \ if (w > wf * 2) { \ se2 = vpx_sub_pixel_avg_variance##wf##xh_##opt( \ src + 32, src_stride, x_offset, y_offset, dst + 32, dst_stride, \ sec + 32, w, h, &sse2, NULL, NULL); \ se += se2; \ sse += sse2; \ se2 = vpx_sub_pixel_avg_variance##wf##xh_##opt( \ src + 48, src_stride, x_offset, y_offset, dst + 48, dst_stride, \ sec + 48, w, h, &sse2, NULL, NULL); \ se += se2; \ sse += sse2; \ } \ } \ *sseptr = sse; \ return sse - (unsigned int)(cast_prod(cast se * se) >> (wlog2 + hlog2)); \ } #define FNS(opt1, opt2) \ FN(64, 64, 16, 6, 6, opt1, (int64_t), (int64_t)); \ FN(64, 32, 16, 6, 5, opt1, (int64_t), (int64_t)); \ FN(32, 64, 16, 5, 6, opt1, (int64_t), (int64_t)); \ FN(32, 32, 16, 5, 5, opt1, (int64_t), (int64_t)); \ FN(32, 16, 16, 5, 4, opt1, (int64_t), (int64_t)); \ FN(16, 32, 16, 4, 5, opt1, (int64_t), (int64_t)); \ FN(16, 16, 16, 4, 4, opt1, (uint32_t), (int64_t)); \ FN(16, 8, 16, 4, 3, opt1, (uint32_t), (int32_t)); \ FN(8, 16, 8, 3, 4, opt1, (uint32_t), (int32_t)); \ FN(8, 8, 8, 3, 3, opt1, (uint32_t), (int32_t)); \ FN(8, 4, 8, 3, 2, opt1, (uint32_t), (int32_t)); \ FN(4, 8, 4, 2, 3, opt1, (uint32_t), (int32_t)); \ FN(4, 4, 4, 2, 2, opt1, (uint32_t), (int32_t)) FNS(sse2, sse); FNS(ssse3, ssse3); #undef FNS #undef FN