Add test for hadamard txfm for low bitdepth.
Cover C SSE2 AVX2 and NEON
Change-Id: Idabbf8528471c0d85cda57102fe043fdf840cca4
diff --git a/test/hadamard_test.cc b/test/hadamard_test.cc
new file mode 100644
index 0000000..e331556
--- /dev/null
+++ b/test/hadamard_test.cc
@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2019, Alliance for Open Media. 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 <algorithm>
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+#include "config/aom_dsp_rtcd.h"
+
+#include "test/acm_random.h"
+#include "test/clear_system_state.h"
+#include "test/register_state_check.h"
+#include "test/util.h"
+
+namespace {
+
+using libaom_test::ACMRandom;
+
+typedef void (*HadamardFunc)(const int16_t *a, ptrdiff_t a_stride,
+ tran_low_t *b);
+
+void HadamardLoop(const tran_low_t *a, tran_low_t *out) {
+ tran_low_t b[8];
+ for (int i = 0; i < 8; i += 2) {
+ b[i + 0] = a[i * 8] + a[(i + 1) * 8];
+ b[i + 1] = a[i * 8] - a[(i + 1) * 8];
+ }
+ tran_low_t c[8];
+ for (int i = 0; i < 8; i += 4) {
+ c[i + 0] = b[i + 0] + b[i + 2];
+ c[i + 1] = b[i + 1] + b[i + 3];
+ c[i + 2] = b[i + 0] - b[i + 2];
+ c[i + 3] = b[i + 1] - b[i + 3];
+ }
+ out[0] = c[0] + c[4];
+ out[7] = c[1] + c[5];
+ out[3] = c[2] + c[6];
+ out[4] = c[3] + c[7];
+ out[2] = c[0] - c[4];
+ out[6] = c[1] - c[5];
+ out[1] = c[2] - c[6];
+ out[5] = c[3] - c[7];
+}
+
+void ReferenceHadamard8x8(const int16_t *a, int a_stride, tran_low_t *b) {
+ tran_low_t input[64];
+ tran_low_t buf[64];
+ for (int i = 0; i < 8; ++i) {
+ for (int j = 0; j < 8; ++j) {
+ input[i * 8 + j] = static_cast<tran_low_t>(a[i * a_stride + j]);
+ }
+ }
+ for (int i = 0; i < 8; ++i) HadamardLoop(input + i, buf + i * 8);
+ for (int i = 0; i < 8; ++i) HadamardLoop(buf + i, b + i * 8);
+}
+
+void ReferenceHadamard16x16(const int16_t *a, int a_stride, tran_low_t *b) {
+ /* The source is a 16x16 block. The destination is rearranged to 8x32.
+ * Input is 9 bit. */
+ ReferenceHadamard8x8(a + 0 + 0 * a_stride, a_stride, b + 0);
+ ReferenceHadamard8x8(a + 8 + 0 * a_stride, a_stride, b + 64);
+ ReferenceHadamard8x8(a + 0 + 8 * a_stride, a_stride, b + 128);
+ ReferenceHadamard8x8(a + 8 + 8 * a_stride, a_stride, b + 192);
+
+ /* Overlay the 8x8 blocks and combine. */
+ for (int i = 0; i < 64; ++i) {
+ /* 8x8 steps the range up to 15 bits. */
+ const tran_low_t a0 = b[0];
+ const tran_low_t a1 = b[64];
+ const tran_low_t a2 = b[128];
+ const tran_low_t a3 = b[192];
+
+ /* Prevent the result from escaping int16_t. */
+ const tran_low_t b0 = (a0 + a1) >> 1;
+ const tran_low_t b1 = (a0 - a1) >> 1;
+ const tran_low_t b2 = (a2 + a3) >> 1;
+ const tran_low_t b3 = (a2 - a3) >> 1;
+
+ /* Store a 16 bit value. */
+ b[0] = b0 + b2;
+ b[64] = b1 + b3;
+ b[128] = b0 - b2;
+ b[192] = b1 - b3;
+
+ ++b;
+ }
+}
+
+void ReferenceHadamard32x32(const int16_t *a, int a_stride, tran_low_t *b) {
+ ReferenceHadamard16x16(a + 0 + 0 * a_stride, a_stride, b + 0);
+ ReferenceHadamard16x16(a + 16 + 0 * a_stride, a_stride, b + 256);
+ ReferenceHadamard16x16(a + 0 + 16 * a_stride, a_stride, b + 512);
+ ReferenceHadamard16x16(a + 16 + 16 * a_stride, a_stride, b + 768);
+
+ for (int i = 0; i < 256; ++i) {
+ const tran_low_t a0 = b[0];
+ const tran_low_t a1 = b[256];
+ const tran_low_t a2 = b[512];
+ const tran_low_t a3 = b[768];
+
+ const tran_low_t b0 = (a0 + a1) >> 2;
+ const tran_low_t b1 = (a0 - a1) >> 2;
+ const tran_low_t b2 = (a2 + a3) >> 2;
+ const tran_low_t b3 = (a2 - a3) >> 2;
+
+ b[0] = b0 + b2;
+ b[256] = b1 + b3;
+ b[512] = b0 - b2;
+ b[768] = b1 - b3;
+
+ ++b;
+ }
+}
+
+struct HadamardFuncWithSize {
+ HadamardFuncWithSize(HadamardFunc f, int s) : func(f), block_size(s) {}
+ HadamardFunc func;
+ int block_size;
+};
+
+std::ostream &operator<<(std::ostream &os, const HadamardFuncWithSize &hfs) {
+ return os << "block size: " << hfs.block_size;
+}
+
+class HadamardTestBase : public ::testing::TestWithParam<HadamardFuncWithSize> {
+ public:
+ virtual void SetUp() {
+ h_func_ = GetParam().func;
+ bwh_ = GetParam().block_size;
+ block_size_ = bwh_ * bwh_;
+ rnd_.Reset(ACMRandom::DeterministicSeed());
+ }
+
+ virtual int16_t Rand() = 0;
+
+ void ReferenceHadamard(const int16_t *a, int a_stride, tran_low_t *b,
+ int bwh) {
+ if (bwh == 32)
+ ReferenceHadamard32x32(a, a_stride, b);
+ else if (bwh == 16)
+ ReferenceHadamard16x16(a, a_stride, b);
+ else
+ ReferenceHadamard8x8(a, a_stride, b);
+ }
+
+ void CompareReferenceRandom() {
+ const int kMaxBlockSize = 32 * 32;
+ DECLARE_ALIGNED(16, int16_t, a[kMaxBlockSize]);
+ DECLARE_ALIGNED(16, tran_low_t, b[kMaxBlockSize]);
+ memset(a, 0, sizeof(a));
+ memset(b, 0, sizeof(b));
+
+ tran_low_t b_ref[kMaxBlockSize];
+ memset(b_ref, 0, sizeof(b_ref));
+
+ for (int i = 0; i < block_size_; ++i) a[i] = Rand();
+
+ ReferenceHadamard(a, bwh_, b_ref, bwh_);
+ ASM_REGISTER_STATE_CHECK(h_func_(a, bwh_, b));
+
+ // The order of the output is not important. Sort before checking.
+ std::sort(b, b + block_size_);
+ std::sort(b_ref, b_ref + block_size_);
+ EXPECT_EQ(memcmp(b, b_ref, sizeof(b)), 0);
+ }
+
+ void VaryStride() {
+ const int kMaxBlockSize = 32 * 32;
+ DECLARE_ALIGNED(16, int16_t, a[kMaxBlockSize * 8]);
+ DECLARE_ALIGNED(16, tran_low_t, b[kMaxBlockSize]);
+ memset(a, 0, sizeof(a));
+ for (int i = 0; i < block_size_ * 8; ++i) a[i] = Rand();
+
+ tran_low_t b_ref[kMaxBlockSize];
+ for (int i = 8; i < 64; i += 8) {
+ memset(b, 0, sizeof(b));
+ memset(b_ref, 0, sizeof(b_ref));
+
+ ReferenceHadamard(a, i, b_ref, bwh_);
+ ASM_REGISTER_STATE_CHECK(h_func_(a, i, b));
+
+ // The order of the output is not important. Sort before checking.
+ std::sort(b, b + block_size_);
+ std::sort(b_ref, b_ref + block_size_);
+ EXPECT_EQ(0, memcmp(b, b_ref, sizeof(b)));
+ }
+ }
+
+ void SpeedTest(int times) {
+ const int kMaxBlockSize = 32 * 32;
+ DECLARE_ALIGNED(16, int16_t, input[kMaxBlockSize]);
+ DECLARE_ALIGNED(16, tran_low_t, output[kMaxBlockSize]);
+ memset(input, 1, sizeof(input));
+ memset(output, 0, sizeof(output));
+
+ aom_usec_timer timer;
+ aom_usec_timer_start(&timer);
+ for (int i = 0; i < times; ++i) {
+ h_func_(input, bwh_, output);
+ }
+ aom_usec_timer_mark(&timer);
+
+ const int elapsed_time = static_cast<int>(aom_usec_timer_elapsed(&timer));
+ printf("Hadamard%dx%d[%12d runs]: %d us\n", bwh_, bwh_, times,
+ elapsed_time);
+ }
+
+ ACMRandom rnd_;
+
+ private:
+ int bwh_;
+ int block_size_;
+ HadamardFunc h_func_;
+};
+
+class HadamardLowbdTest : public HadamardTestBase {
+ public:
+ virtual int16_t Rand() { return rnd_.Rand9Signed(); }
+};
+
+TEST_P(HadamardLowbdTest, CompareReferenceRandom) { CompareReferenceRandom(); }
+
+TEST_P(HadamardLowbdTest, VaryStride) { VaryStride(); }
+
+INSTANTIATE_TEST_CASE_P(
+ C, HadamardLowbdTest,
+ ::testing::Values(HadamardFuncWithSize(&aom_hadamard_8x8_c, 8),
+ HadamardFuncWithSize(&aom_hadamard_16x16_c, 16),
+ HadamardFuncWithSize(&aom_hadamard_32x32_c, 32)));
+
+#if HAVE_SSE2
+INSTANTIATE_TEST_CASE_P(
+ SSE2, HadamardLowbdTest,
+ ::testing::Values(HadamardFuncWithSize(&aom_hadamard_8x8_sse2, 8),
+ HadamardFuncWithSize(&aom_hadamard_16x16_sse2, 16),
+ HadamardFuncWithSize(&aom_hadamard_32x32_sse2, 32)));
+#endif // HAVE_SSE2
+
+#if HAVE_AVX2
+INSTANTIATE_TEST_CASE_P(
+ AVX2, HadamardLowbdTest,
+ ::testing::Values(HadamardFuncWithSize(&aom_hadamard_16x16_avx2, 16),
+ HadamardFuncWithSize(&aom_hadamard_32x32_avx2, 32)));
+#endif // HAVE_AVX2
+
+#if HAVE_NEON
+INSTANTIATE_TEST_CASE_P(
+ NEON, HadamardLowbdTest,
+ ::testing::Values(HadamardFuncWithSize(&aom_hadamard_8x8_neon, 8),
+ HadamardFuncWithSize(&aom_hadamard_16x16_neon, 16)));
+#endif // HAVE_NEON
+
+} // namespace
diff --git a/test/test.cmake b/test/test.cmake
index 9e6e39b..50b5625 100644
--- a/test/test.cmake
+++ b/test/test.cmake
@@ -197,6 +197,7 @@
"${AOM_ROOT}/test/error_block_test.cc"
"${AOM_ROOT}/test/fft_test.cc"
"${AOM_ROOT}/test/fwht4x4_test.cc"
+ "${AOM_ROOT}/test/hadamard_test.cc"
"${AOM_ROOT}/test/horver_correlation_test.cc"
"${AOM_ROOT}/test/masked_sad_test.cc"
"${AOM_ROOT}/test/masked_variance_test.cc"
