Add aom_sum_sse_2d_i16_c and associated SIMD versions
A new function aom_sum_sse_2d_i16_c is introduced which computes
the sum of values and sum of squared values of residual block.
The corresponding AVX2 and SSE2 functions have been added.
Change-Id: Ia9e92ef5d828a47e1dee112f631a9850e7452f7b
diff --git a/aom_dsp/aom_dsp_rtcd_defs.pl b/aom_dsp/aom_dsp_rtcd_defs.pl
index 0d6cf35..53ce507 100755
--- a/aom_dsp/aom_dsp_rtcd_defs.pl
+++ b/aom_dsp/aom_dsp_rtcd_defs.pl
@@ -643,6 +643,8 @@
add_proto qw/unsigned int/, "aom_dist_wtd_sad${w}x${h}_avg", "const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, int ref_stride, const uint8_t *second_pred, const DIST_WTD_COMP_PARAMS *jcp_param";
}
+ add_proto qw/uint64_t aom_sum_sse_2d_i16/, "const int16_t *src, int src_stride, int width, int height, int *sum";
+ specialize qw/aom_sum_sse_2d_i16 sse2 avx2/;
specialize qw/aom_sad128x128 avx2 neon sse2/;
specialize qw/aom_sad128x64 avx2 sse2/;
specialize qw/aom_sad64x128 avx2 sse2/;
diff --git a/aom_dsp/sum_squares.c b/aom_dsp/sum_squares.c
index d739a60..f58defa 100644
--- a/aom_dsp/sum_squares.c
+++ b/aom_dsp/sum_squares.c
@@ -71,3 +71,20 @@
return (ss - s * s / (width * height));
}
+
+uint64_t aom_sum_sse_2d_i16_c(const int16_t *src, int src_stride, int width,
+ int height, int *sum) {
+ int r, c;
+ int16_t *srcp = (int16_t *)src;
+ int64_t ss = 0;
+
+ for (r = 0; r < height; r++) {
+ for (c = 0; c < width; c++) {
+ const int16_t v = srcp[c];
+ ss += v * v;
+ *sum += v;
+ }
+ srcp += src_stride;
+ }
+ return ss;
+}
diff --git a/aom_dsp/x86/sum_squares_avx2.c b/aom_dsp/x86/sum_squares_avx2.c
index 97d78b6..0d63db2 100644
--- a/aom_dsp/x86/sum_squares_avx2.c
+++ b/aom_dsp/x86/sum_squares_avx2.c
@@ -78,6 +78,84 @@
}
}
+static uint64_t aom_sum_sse_2d_i16_nxn_avx2(const int16_t *src, int stride,
+ int width, int height, int *sum) {
+ uint64_t result;
+ const __m256i zero_reg = _mm256_setzero_si256();
+ const __m256i one_reg = _mm256_set1_epi16(1);
+
+ __m256i v_sse_total = zero_reg;
+ __m256i v_sum_total = zero_reg;
+
+ for (int col = 0; col < height; col += 4) {
+ __m256i v_sse_row = zero_reg;
+ for (int row = 0; row < width; row += 16) {
+ const int16_t *tempsrc = src + row;
+ const __m256i v_val_0_w =
+ _mm256_loadu_si256((const __m256i *)(tempsrc + 0 * stride));
+ const __m256i v_val_1_w =
+ _mm256_loadu_si256((const __m256i *)(tempsrc + 1 * stride));
+ const __m256i v_val_2_w =
+ _mm256_loadu_si256((const __m256i *)(tempsrc + 2 * stride));
+ const __m256i v_val_3_w =
+ _mm256_loadu_si256((const __m256i *)(tempsrc + 3 * stride));
+
+ const __m256i v_sum_01 = _mm256_add_epi16(v_val_0_w, v_val_1_w);
+ const __m256i v_sum_23 = _mm256_add_epi16(v_val_2_w, v_val_3_w);
+ __m256i v_sum_0123 = _mm256_add_epi16(v_sum_01, v_sum_23);
+ v_sum_0123 = _mm256_madd_epi16(v_sum_0123, one_reg);
+ v_sum_total = _mm256_add_epi32(v_sum_total, v_sum_0123);
+
+ const __m256i v_sq_0_d = _mm256_madd_epi16(v_val_0_w, v_val_0_w);
+ const __m256i v_sq_1_d = _mm256_madd_epi16(v_val_1_w, v_val_1_w);
+ const __m256i v_sq_2_d = _mm256_madd_epi16(v_val_2_w, v_val_2_w);
+ const __m256i v_sq_3_d = _mm256_madd_epi16(v_val_3_w, v_val_3_w);
+ const __m256i v_sq_01_d = _mm256_add_epi32(v_sq_0_d, v_sq_1_d);
+ const __m256i v_sq_23_d = _mm256_add_epi32(v_sq_2_d, v_sq_3_d);
+ const __m256i v_sq_0123_d = _mm256_add_epi32(v_sq_01_d, v_sq_23_d);
+ v_sse_row = _mm256_add_epi32(v_sse_row, v_sq_0123_d);
+ }
+ const __m256i v_sse_row_low = _mm256_unpacklo_epi32(v_sse_row, zero_reg);
+ const __m256i v_sse_row_hi = _mm256_unpackhi_epi32(v_sse_row, zero_reg);
+ v_sse_row = _mm256_add_epi64(v_sse_row_low, v_sse_row_hi);
+ v_sse_total = _mm256_add_epi64(v_sse_total, v_sse_row);
+ src += 4 * stride;
+ }
+
+ const __m128i v_sum_total_low = _mm256_castsi256_si128(v_sum_total);
+ const __m128i v_sum_total_hi = _mm256_extracti128_si256(v_sum_total, 1);
+ __m128i sum_128bit = _mm_add_epi32(v_sum_total_hi, v_sum_total_low);
+ sum_128bit = _mm_add_epi32(sum_128bit, _mm_srli_si128(sum_128bit, 8));
+ sum_128bit = _mm_add_epi32(sum_128bit, _mm_srli_si128(sum_128bit, 4));
+ *sum += _mm_cvtsi128_si32(sum_128bit);
+
+ __m128i v_sse_total_lo = _mm256_castsi256_si128(v_sse_total);
+ __m128i v_sse_total_hi = _mm256_extracti128_si256(v_sse_total, 1);
+ __m128i sse_128bit = _mm_add_epi64(v_sse_total_lo, v_sse_total_hi);
+
+ sse_128bit =
+ _mm_add_epi64(sse_128bit, _mm_unpackhi_epi64(sse_128bit, sse_128bit));
+
+ xx_storel_64(&result, sse_128bit);
+
+ return result;
+}
+
+uint64_t aom_sum_sse_2d_i16_avx2(const int16_t *src, int src_stride, int width,
+ int height, int *sum) {
+ if (LIKELY(width == 4 && height == 4)) {
+ return aom_sum_sse_2d_i16_4x4_sse2(src, src_stride, sum);
+ } else if (LIKELY(width == 4 && (height & 3) == 0)) {
+ return aom_sum_sse_2d_i16_4xn_sse2(src, src_stride, height, sum);
+ } else if (LIKELY(width == 8 && (height & 3) == 0)) {
+ return aom_sum_sse_2d_i16_nxn_sse2(src, src_stride, width, height, sum);
+ } else if (LIKELY(((width & 15) == 0) && ((height & 3) == 0))) {
+ return aom_sum_sse_2d_i16_nxn_avx2(src, src_stride, width, height, sum);
+ } else {
+ return aom_sum_sse_2d_i16_c(src, src_stride, width, height, sum);
+ }
+}
+
// Accumulate sum of 16-bit elements in the vector
static AOM_INLINE int32_t mm256_accumulate_epi16(__m256i vec_a) {
__m128i vtmp1 = _mm256_extracti128_si256(vec_a, 1);
diff --git a/aom_dsp/x86/sum_squares_sse2.c b/aom_dsp/x86/sum_squares_sse2.c
index 85b301a..0bdeee9 100644
--- a/aom_dsp/x86/sum_squares_sse2.c
+++ b/aom_dsp/x86/sum_squares_sse2.c
@@ -53,6 +53,27 @@
return (uint64_t)_mm_cvtsi128_si32(v_sum_d);
}
+uint64_t aom_sum_sse_2d_i16_4x4_sse2(const int16_t *src, int stride, int *sum) {
+ const __m128i one_reg = _mm_set1_epi16(1);
+ const __m128i v_val_0_w = xx_loadl_64(src + 0 * stride);
+ const __m128i v_val_2_w = xx_loadl_64(src + 2 * stride);
+ __m128i v_val_01_w = xx_loadh_64(v_val_0_w, src + 1 * stride);
+ __m128i v_val_23_w = xx_loadh_64(v_val_2_w, src + 3 * stride);
+
+ __m128i v_sum_0123_d = _mm_add_epi16(v_val_01_w, v_val_23_w);
+ v_sum_0123_d = _mm_madd_epi16(v_sum_0123_d, one_reg);
+ v_sum_0123_d = _mm_add_epi32(v_sum_0123_d, _mm_srli_si128(v_sum_0123_d, 8));
+ v_sum_0123_d = _mm_add_epi32(v_sum_0123_d, _mm_srli_si128(v_sum_0123_d, 4));
+ *sum = _mm_cvtsi128_si32(v_sum_0123_d);
+
+ const __m128i v_sq_01_d = _mm_madd_epi16(v_val_01_w, v_val_01_w);
+ const __m128i v_sq_23_d = _mm_madd_epi16(v_val_23_w, v_val_23_w);
+ __m128i v_sq_0123_d = _mm_add_epi32(v_sq_01_d, v_sq_23_d);
+ v_sq_0123_d = _mm_add_epi32(v_sq_0123_d, _mm_srli_si128(v_sq_0123_d, 8));
+ v_sq_0123_d = _mm_add_epi32(v_sq_0123_d, _mm_srli_si128(v_sq_0123_d, 4));
+ return (uint64_t)_mm_cvtsi128_si32(v_sq_0123_d);
+}
+
uint64_t aom_sum_squares_2d_i16_4xn_sse2(const int16_t *src, int stride,
int height) {
int r = 0;
@@ -70,6 +91,20 @@
return xx_cvtsi128_si64(v_acc_64);
}
+uint64_t aom_sum_sse_2d_i16_4xn_sse2(const int16_t *src, int stride, int height,
+ int *sum) {
+ int r = 0;
+ uint64_t sse = 0;
+ do {
+ int curr_sum = 0;
+ sse += aom_sum_sse_2d_i16_4x4_sse2(src, stride, &curr_sum);
+ *sum += curr_sum;
+ src += stride << 2;
+ r += 4;
+ } while (r < height);
+ return sse;
+}
+
#ifdef __GNUC__
// This prevents GCC/Clang from inlining this function into
// aom_sum_squares_2d_i16_sse2, which in turn saves some stack
@@ -120,6 +155,69 @@
return xx_cvtsi128_si64(v_acc_q);
}
+#ifdef __GNUC__
+// This prevents GCC/Clang from inlining this function into
+// aom_sum_sse_2d_i16_nxn_sse2, which in turn saves some stack
+// maintenance instructions in the common case of 4x4.
+__attribute__((noinline))
+#endif
+uint64_t
+aom_sum_sse_2d_i16_nxn_sse2(const int16_t *src, int stride, int width,
+ int height, int *sum) {
+ int r = 0;
+ uint64_t result;
+ const __m128i zero_reg = _mm_setzero_si128();
+ const __m128i one_reg = _mm_set1_epi16(1);
+
+ __m128i v_sse_total = zero_reg;
+ __m128i v_sum_total = zero_reg;
+
+ do {
+ int c = 0;
+ __m128i v_sse_row = zero_reg;
+ do {
+ const int16_t *b = src + c;
+
+ __m128i v_val_0_w = xx_load_128(b + 0 * stride);
+ __m128i v_val_1_w = xx_load_128(b + 1 * stride);
+ __m128i v_val_2_w = xx_load_128(b + 2 * stride);
+ __m128i v_val_3_w = xx_load_128(b + 3 * stride);
+
+ const __m128i v_sq_0_d = _mm_madd_epi16(v_val_0_w, v_val_0_w);
+ const __m128i v_sq_1_d = _mm_madd_epi16(v_val_1_w, v_val_1_w);
+ const __m128i v_sq_2_d = _mm_madd_epi16(v_val_2_w, v_val_2_w);
+ const __m128i v_sq_3_d = _mm_madd_epi16(v_val_3_w, v_val_3_w);
+ const __m128i v_sq_01_d = _mm_add_epi32(v_sq_0_d, v_sq_1_d);
+ const __m128i v_sq_23_d = _mm_add_epi32(v_sq_2_d, v_sq_3_d);
+ const __m128i v_sq_0123_d = _mm_add_epi32(v_sq_01_d, v_sq_23_d);
+ v_sse_row = _mm_add_epi32(v_sse_row, v_sq_0123_d);
+
+ const __m128i v_sum_01 = _mm_add_epi16(v_val_0_w, v_val_1_w);
+ const __m128i v_sum_23 = _mm_add_epi16(v_val_2_w, v_val_3_w);
+ __m128i v_sum_0123_d = _mm_add_epi16(v_sum_01, v_sum_23);
+ v_sum_0123_d = _mm_madd_epi16(v_sum_0123_d, one_reg);
+ v_sum_total = _mm_add_epi32(v_sum_total, v_sum_0123_d);
+
+ c += 8;
+ } while (c < width);
+
+ const __m128i v_sse_row_low = _mm_unpacklo_epi32(v_sse_row, zero_reg);
+ const __m128i v_sse_row_hi = _mm_unpackhi_epi32(v_sse_row, zero_reg);
+ v_sse_row = _mm_add_epi64(v_sse_row_low, v_sse_row_hi);
+ v_sse_total = _mm_add_epi64(v_sse_total, v_sse_row);
+ src += 4 * stride;
+ r += 4;
+ } while (r < height);
+
+ v_sum_total = _mm_add_epi32(v_sum_total, _mm_srli_si128(v_sum_total, 8));
+ v_sum_total = _mm_add_epi32(v_sum_total, _mm_srli_si128(v_sum_total, 4));
+ *sum += _mm_cvtsi128_si32(v_sum_total);
+
+ v_sse_total = _mm_add_epi64(v_sse_total, _mm_srli_si128(v_sse_total, 8));
+ xx_storel_64(&result, v_sse_total);
+ return result;
+}
+
uint64_t aom_sum_squares_2d_i16_sse2(const int16_t *src, int stride, int width,
int height) {
// 4 elements per row only requires half an XMM register, so this
@@ -137,6 +235,20 @@
}
}
+uint64_t aom_sum_sse_2d_i16_sse2(const int16_t *src, int src_stride, int width,
+ int height, int *sum) {
+ if (LIKELY(width == 4 && height == 4)) {
+ return aom_sum_sse_2d_i16_4x4_sse2(src, src_stride, sum);
+ } else if (LIKELY(width == 4 && (height & 3) == 0)) {
+ return aom_sum_sse_2d_i16_4xn_sse2(src, src_stride, height, sum);
+ } else if (LIKELY((width & 7) == 0 && (height & 3) == 0)) {
+ // Generic case
+ return aom_sum_sse_2d_i16_nxn_sse2(src, src_stride, width, height, sum);
+ } else {
+ return aom_sum_sse_2d_i16_c(src, src_stride, width, height, sum);
+ }
+}
+
//////////////////////////////////////////////////////////////////////////////
// 1D version
//////////////////////////////////////////////////////////////////////////////
diff --git a/aom_dsp/x86/sum_squares_sse2.h b/aom_dsp/x86/sum_squares_sse2.h
index 491e31c..5ed3f2c 100644
--- a/aom_dsp/x86/sum_squares_sse2.h
+++ b/aom_dsp/x86/sum_squares_sse2.h
@@ -19,4 +19,10 @@
int height);
uint64_t aom_sum_squares_2d_i16_4x4_sse2(const int16_t *src, int stride);
+uint64_t aom_sum_sse_2d_i16_4x4_sse2(const int16_t *src, int stride, int *sum);
+uint64_t aom_sum_sse_2d_i16_4xn_sse2(const int16_t *src, int stride, int height,
+ int *sum);
+uint64_t aom_sum_sse_2d_i16_nxn_sse2(const int16_t *src, int stride, int width,
+ int height, int *sum);
+
#endif // AOM_DSP_X86_SUM_SQUARES_SSE2_H_
diff --git a/test/sse_sum_test.cc b/test/sse_sum_test.cc
new file mode 100644
index 0000000..a9a1572
--- /dev/null
+++ b/test/sse_sum_test.cc
@@ -0,0 +1,171 @@
+/*
+ * Copyright (c) 2020, 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 <cmath>
+#include <cstdlib>
+#include <string>
+#include <tuple>
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+#include "config/aom_config.h"
+#include "config/aom_dsp_rtcd.h"
+
+#include "aom_ports/mem.h"
+#include "test/acm_random.h"
+#include "test/clear_system_state.h"
+#include "test/register_state_check.h"
+#include "test/util.h"
+#include "test/function_equivalence_test.h"
+
+using libaom_test::ACMRandom;
+using libaom_test::FunctionEquivalenceTest;
+using ::testing::Combine;
+using ::testing::Range;
+using ::testing::Values;
+using ::testing::ValuesIn;
+
+namespace {
+const int kNumIterations = 10000;
+
+typedef uint64_t (*SSI16Func)(const int16_t *src, int src_stride, int width,
+ int height, int *sum);
+typedef libaom_test::FuncParam<SSI16Func> TestFuncs;
+
+class SumSSETest : public ::testing::TestWithParam<TestFuncs> {
+ public:
+ virtual ~SumSSETest() {}
+ virtual void SetUp() {
+ params_ = this->GetParam();
+ rnd_.Reset(ACMRandom::DeterministicSeed());
+ src_ = reinterpret_cast<int16_t *>(aom_memalign(16, 256 * 256 * 2));
+ ASSERT_TRUE(src_ != NULL);
+ }
+
+ virtual void TearDown() {
+ libaom_test::ClearSystemState();
+ aom_free(src_);
+ }
+ void RunTest(int isRandom);
+ void RunSpeedTest();
+
+ void GenRandomData(int width, int height, int stride) {
+ const int msb = 11; // Up to 12 bit input
+ const int limit = 1 << (msb + 1);
+ for (int ii = 0; ii < height; ii++) {
+ for (int jj = 0; jj < width; jj++) {
+ src_[ii * stride + jj] = rnd_(2) ? rnd_(limit) : -rnd_(limit);
+ }
+ }
+ }
+
+ void GenExtremeData(int width, int height, int stride) {
+ const int msb = 11; // Up to 12 bit input
+ const int limit = 1 << (msb + 1);
+ const int val = rnd_(2) ? limit - 1 : -(limit - 1);
+ for (int ii = 0; ii < height; ii++) {
+ for (int jj = 0; jj < width; jj++) {
+ src_[ii * stride + jj] = val;
+ }
+ }
+ }
+
+ protected:
+ TestFuncs params_;
+ int16_t *src_;
+ ACMRandom rnd_;
+};
+
+void SumSSETest::RunTest(int isRandom) {
+ for (int k = 0; k < kNumIterations; k++) {
+ const int width = 4 * (rnd_(31) + 1); // Up to 128x128
+ const int height = 4 * (rnd_(31) + 1); // Up to 128x128
+ int stride = 4 << rnd_(7); // Up to 256 stride
+ while (stride < width) { // Make sure it's valid
+ stride = 4 << rnd_(7);
+ }
+ if (isRandom) {
+ GenRandomData(width, height, stride);
+ } else {
+ GenExtremeData(width, height, stride);
+ }
+ int sum_ref = 0, sum_tst = 0;
+ const uint64_t sse_ref =
+ params_.ref_func(src_, stride, width, height, &sum_ref);
+ const uint64_t sse_tst =
+ params_.tst_func(src_, stride, width, height, &sum_tst);
+
+ EXPECT_EQ(sse_ref, sse_tst)
+ << "Error: SumSSETest [" << width << "x" << height
+ << "] C SSE does not match optimized output.";
+ EXPECT_EQ(sum_ref, sum_tst)
+ << "Error: SumSSETest [" << width << "x" << height
+ << "] C Sum does not match optimized output.";
+ }
+}
+
+void SumSSETest::RunSpeedTest() {
+ for (int block = BLOCK_4X4; block < BLOCK_SIZES_ALL; block++) {
+ const int width = block_size_wide[block]; // Up to 128x128
+ const int height = block_size_high[block]; // Up to 128x128
+ int stride = 4 << rnd_(7); // Up to 256 stride
+ while (stride < width) { // Make sure it's valid
+ stride = 4 << rnd_(7);
+ }
+ GenExtremeData(width, height, stride);
+ const int num_loops = 1000000000 / (width + height);
+ int sum_ref = 0, sum_tst = 0;
+
+ aom_usec_timer timer;
+ aom_usec_timer_start(&timer);
+
+ for (int i = 0; i < num_loops; ++i)
+ params_.ref_func(src_, stride, width, height, &sum_ref);
+
+ aom_usec_timer_mark(&timer);
+ const int elapsed_time = static_cast<int>(aom_usec_timer_elapsed(&timer));
+ printf("SumSquaresTest C %3dx%-3d: %7.2f ns\n", width, height,
+ 1000.0 * elapsed_time / num_loops);
+
+ aom_usec_timer timer1;
+ aom_usec_timer_start(&timer1);
+ for (int i = 0; i < num_loops; ++i)
+ params_.tst_func(src_, stride, width, height, &sum_tst);
+ aom_usec_timer_mark(&timer1);
+ const int elapsed_time1 = static_cast<int>(aom_usec_timer_elapsed(&timer1));
+ printf("SumSquaresTest Test %3dx%-3d: %7.2f ns\n", width, height,
+ 1000.0 * elapsed_time1 / num_loops);
+ }
+}
+
+TEST_P(SumSSETest, OperationCheck) {
+ RunTest(1); // GenRandomData
+}
+
+TEST_P(SumSSETest, ExtremeValues) {
+ RunTest(0); // GenExtremeData
+}
+
+TEST_P(SumSSETest, DISABLED_Speed) { RunSpeedTest(); }
+
+#if HAVE_SSE2
+INSTANTIATE_TEST_SUITE_P(SSE2, SumSSETest,
+ ::testing::Values(TestFuncs(
+ &aom_sum_sse_2d_i16_c, &aom_sum_sse_2d_i16_sse2)));
+
+#endif // HAVE_SSE2
+#if HAVE_AVX2
+INSTANTIATE_TEST_SUITE_P(AVX2, SumSSETest,
+ ::testing::Values(TestFuncs(
+ &aom_sum_sse_2d_i16_c, &aom_sum_sse_2d_i16_avx2)));
+#endif // HAVE_AVX2
+
+} // namespace
diff --git a/test/test.cmake b/test/test.cmake
index eb245cb..e3e49ec 100644
--- a/test/test.cmake
+++ b/test/test.cmake
@@ -223,6 +223,7 @@
"${AOM_ROOT}/test/subtract_test.cc"
"${AOM_ROOT}/test/reconinter_test.cc"
"${AOM_ROOT}/test/sum_squares_test.cc"
+ "${AOM_ROOT}/test/sse_sum_test.cc"
"${AOM_ROOT}/test/variance_test.cc"
"${AOM_ROOT}/test/wiener_test.cc"
"${AOM_ROOT}/test/frame_error_test.cc"
