Index: source/libvpx/vp9/encoder/x86/vp9_sad4d_intrin_avx2.c |
=================================================================== |
--- source/libvpx/vp9/encoder/x86/vp9_sad4d_intrin_avx2.c (revision 0) |
+++ source/libvpx/vp9/encoder/x86/vp9_sad4d_intrin_avx2.c (revision 0) |
@@ -0,0 +1,167 @@ |
+/* |
+ * Copyright (c) 2014 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 <immintrin.h> // AVX2 |
+#include "vpx/vpx_integer.h" |
+ |
+void vp9_sad32x32x4d_avx2(uint8_t *src, |
+ int src_stride, |
+ uint8_t *ref[4], |
+ int ref_stride, |
+ unsigned int res[4]) { |
+ __m256i src_reg, ref0_reg, ref1_reg, ref2_reg, ref3_reg; |
+ __m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3; |
+ __m256i sum_mlow, sum_mhigh; |
+ int i; |
+ uint8_t *ref0, *ref1, *ref2, *ref3; |
+ |
+ ref0 = ref[0]; |
+ ref1 = ref[1]; |
+ ref2 = ref[2]; |
+ ref3 = ref[3]; |
+ sum_ref0 = _mm256_set1_epi16(0); |
+ sum_ref1 = _mm256_set1_epi16(0); |
+ sum_ref2 = _mm256_set1_epi16(0); |
+ sum_ref3 = _mm256_set1_epi16(0); |
+ for (i = 0; i < 32 ; i++) { |
+ // load src and all refs |
+ src_reg = _mm256_load_si256((__m256i *)(src)); |
+ ref0_reg = _mm256_loadu_si256((__m256i *) (ref0)); |
+ ref1_reg = _mm256_loadu_si256((__m256i *) (ref1)); |
+ ref2_reg = _mm256_loadu_si256((__m256i *) (ref2)); |
+ ref3_reg = _mm256_loadu_si256((__m256i *) (ref3)); |
+ // sum of the absolute differences between every ref-i to src |
+ ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg); |
+ ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg); |
+ ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg); |
+ ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg); |
+ // sum every ref-i |
+ sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg); |
+ sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg); |
+ sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg); |
+ sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg); |
+ |
+ src+= src_stride; |
+ ref0+= ref_stride; |
+ ref1+= ref_stride; |
+ ref2+= ref_stride; |
+ ref3+= ref_stride; |
+ } |
+ { |
+ __m128i sum; |
+ // in sum_ref-i the result is saved in the first 4 bytes |
+ // the other 4 bytes are zeroed. |
+ // sum_ref1 and sum_ref3 are shifted left by 4 bytes |
+ sum_ref1 = _mm256_slli_si256(sum_ref1, 4); |
+ sum_ref3 = _mm256_slli_si256(sum_ref3, 4); |
+ |
+ // merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3 |
+ sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1); |
+ sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3); |
+ |
+ // merge every 64 bit from each sum_ref-i |
+ sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2); |
+ sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2); |
+ |
+ // add the low 64 bit to the high 64 bit |
+ sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh); |
+ |
+ // add the low 128 bit to the high 128 bit |
+ sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow), |
+ _mm256_extractf128_si256(sum_mlow, 1)); |
+ |
+ _mm_storeu_si128((__m128i *)(res), sum); |
+ } |
+} |
+ |
+void vp9_sad64x64x4d_avx2(uint8_t *src, |
+ int src_stride, |
+ uint8_t *ref[4], |
+ int ref_stride, |
+ unsigned int res[4]) { |
+ __m256i src_reg, srcnext_reg, ref0_reg, ref0next_reg; |
+ __m256i ref1_reg, ref1next_reg, ref2_reg, ref2next_reg; |
+ __m256i ref3_reg, ref3next_reg; |
+ __m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3; |
+ __m256i sum_mlow, sum_mhigh; |
+ int i; |
+ uint8_t *ref0, *ref1, *ref2, *ref3; |
+ |
+ ref0 = ref[0]; |
+ ref1 = ref[1]; |
+ ref2 = ref[2]; |
+ ref3 = ref[3]; |
+ sum_ref0 = _mm256_set1_epi16(0); |
+ sum_ref1 = _mm256_set1_epi16(0); |
+ sum_ref2 = _mm256_set1_epi16(0); |
+ sum_ref3 = _mm256_set1_epi16(0); |
+ for (i = 0; i < 64 ; i++) { |
+ // load 64 bytes from src and all refs |
+ src_reg = _mm256_load_si256((__m256i *)(src)); |
+ srcnext_reg = _mm256_load_si256((__m256i *)(src + 32)); |
+ ref0_reg = _mm256_loadu_si256((__m256i *) (ref0)); |
+ ref0next_reg = _mm256_loadu_si256((__m256i *) (ref0 + 32)); |
+ ref1_reg = _mm256_loadu_si256((__m256i *) (ref1)); |
+ ref1next_reg = _mm256_loadu_si256((__m256i *) (ref1 + 32)); |
+ ref2_reg = _mm256_loadu_si256((__m256i *) (ref2)); |
+ ref2next_reg = _mm256_loadu_si256((__m256i *) (ref2 + 32)); |
+ ref3_reg = _mm256_loadu_si256((__m256i *) (ref3)); |
+ ref3next_reg = _mm256_loadu_si256((__m256i *) (ref3 + 32)); |
+ // sum of the absolute differences between every ref-i to src |
+ ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg); |
+ ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg); |
+ ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg); |
+ ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg); |
+ ref0next_reg = _mm256_sad_epu8(ref0next_reg, srcnext_reg); |
+ ref1next_reg = _mm256_sad_epu8(ref1next_reg, srcnext_reg); |
+ ref2next_reg = _mm256_sad_epu8(ref2next_reg, srcnext_reg); |
+ ref3next_reg = _mm256_sad_epu8(ref3next_reg, srcnext_reg); |
+ |
+ // sum every ref-i |
+ sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg); |
+ sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg); |
+ sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg); |
+ sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg); |
+ sum_ref0 = _mm256_add_epi32(sum_ref0, ref0next_reg); |
+ sum_ref1 = _mm256_add_epi32(sum_ref1, ref1next_reg); |
+ sum_ref2 = _mm256_add_epi32(sum_ref2, ref2next_reg); |
+ sum_ref3 = _mm256_add_epi32(sum_ref3, ref3next_reg); |
+ src+= src_stride; |
+ ref0+= ref_stride; |
+ ref1+= ref_stride; |
+ ref2+= ref_stride; |
+ ref3+= ref_stride; |
+ } |
+ { |
+ __m128i sum; |
+ |
+ // in sum_ref-i the result is saved in the first 4 bytes |
+ // the other 4 bytes are zeroed. |
+ // sum_ref1 and sum_ref3 are shifted left by 4 bytes |
+ sum_ref1 = _mm256_slli_si256(sum_ref1, 4); |
+ sum_ref3 = _mm256_slli_si256(sum_ref3, 4); |
+ |
+ // merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3 |
+ sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1); |
+ sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3); |
+ |
+ // merge every 64 bit from each sum_ref-i |
+ sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2); |
+ sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2); |
+ |
+ // add the low 64 bit to the high 64 bit |
+ sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh); |
+ |
+ // add the low 128 bit to the high 128 bit |
+ sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow), |
+ _mm256_extractf128_si256(sum_mlow, 1)); |
+ |
+ _mm_storeu_si128((__m128i *)(res), sum); |
+ } |
+} |