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/*
* 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 <memory>
#include <new>
#include <tuple>
#include "config/aom_dsp_rtcd.h"
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "test/acm_random.h"
#include "test/util.h"
#include "test/register_state_check.h"
#include "aom_dsp/flow_estimation/corner_match.h"
namespace test_libaom {
namespace AV1CornerMatch {
using libaom_test::ACMRandom;
typedef double (*ComputeCrossCorrFunc)(const unsigned char *im1, int stride1,
int x1, int y1, const unsigned char *im2,
int stride2, int x2, int y2);
using std::make_tuple;
using std::tuple;
typedef tuple<int, ComputeCrossCorrFunc> CornerMatchParam;
class AV1CornerMatchTest : public ::testing::TestWithParam<CornerMatchParam> {
public:
~AV1CornerMatchTest() override;
void SetUp() override;
protected:
void RunCheckOutput(int run_times);
ComputeCrossCorrFunc target_func;
libaom_test::ACMRandom rnd_;
};
GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(AV1CornerMatchTest);
AV1CornerMatchTest::~AV1CornerMatchTest() = default;
void AV1CornerMatchTest::SetUp() {
rnd_.Reset(ACMRandom::DeterministicSeed());
target_func = GET_PARAM(1);
}
void AV1CornerMatchTest::RunCheckOutput(int run_times) {
const int w = 128, h = 128;
const int num_iters = 10000;
int i, j;
aom_usec_timer ref_timer, test_timer;
std::unique_ptr<uint8_t[]> input1(new (std::nothrow) uint8_t[w * h]);
std::unique_ptr<uint8_t[]> input2(new (std::nothrow) uint8_t[w * h]);
ASSERT_NE(input1, nullptr);
ASSERT_NE(input2, nullptr);
// Test the two extreme cases:
// i) Random data, should have correlation close to 0
// ii) Linearly related data + noise, should have correlation close to 1
int mode = GET_PARAM(0);
if (mode == 0) {
for (i = 0; i < h; ++i)
for (j = 0; j < w; ++j) {
input1[i * w + j] = rnd_.Rand8();
input2[i * w + j] = rnd_.Rand8();
}
} else if (mode == 1) {
for (i = 0; i < h; ++i)
for (j = 0; j < w; ++j) {
int v = rnd_.Rand8();
input1[i * w + j] = v;
input2[i * w + j] = (v / 2) + (rnd_.Rand8() & 15);
}
}
for (i = 0; i < num_iters; ++i) {
int x1 = MATCH_SZ_BY2 + rnd_.PseudoUniform(w - 2 * MATCH_SZ_BY2);
int y1 = MATCH_SZ_BY2 + rnd_.PseudoUniform(h - 2 * MATCH_SZ_BY2);
int x2 = MATCH_SZ_BY2 + rnd_.PseudoUniform(w - 2 * MATCH_SZ_BY2);
int y2 = MATCH_SZ_BY2 + rnd_.PseudoUniform(h - 2 * MATCH_SZ_BY2);
double res_c = av1_compute_cross_correlation_c(input1.get(), w, x1, y1,
input2.get(), w, x2, y2);
double res_simd =
target_func(input1.get(), w, x1, y1, input2.get(), w, x2, y2);
if (run_times > 1) {
aom_usec_timer_start(&ref_timer);
for (j = 0; j < run_times; j++) {
av1_compute_cross_correlation_c(input1.get(), w, x1, y1, input2.get(),
w, x2, y2);
}
aom_usec_timer_mark(&ref_timer);
const int elapsed_time_c =
static_cast<int>(aom_usec_timer_elapsed(&ref_timer));
aom_usec_timer_start(&test_timer);
for (j = 0; j < run_times; j++) {
target_func(input1.get(), w, x1, y1, input2.get(), w, x2, y2);
}
aom_usec_timer_mark(&test_timer);
const int elapsed_time_simd =
static_cast<int>(aom_usec_timer_elapsed(&test_timer));
printf(
"c_time=%d \t simd_time=%d \t "
"gain=%d\n",
elapsed_time_c, elapsed_time_simd,
(elapsed_time_c / elapsed_time_simd));
} else {
ASSERT_EQ(res_simd, res_c);
}
}
}
TEST_P(AV1CornerMatchTest, CheckOutput) { RunCheckOutput(1); }
TEST_P(AV1CornerMatchTest, DISABLED_Speed) { RunCheckOutput(100000); }
#if HAVE_SSE4_1
INSTANTIATE_TEST_SUITE_P(
SSE4_1, AV1CornerMatchTest,
::testing::Values(make_tuple(0, &av1_compute_cross_correlation_sse4_1),
make_tuple(1, &av1_compute_cross_correlation_sse4_1)));
#endif
#if HAVE_AVX2
INSTANTIATE_TEST_SUITE_P(
AVX2, AV1CornerMatchTest,
::testing::Values(make_tuple(0, &av1_compute_cross_correlation_avx2),
make_tuple(1, &av1_compute_cross_correlation_avx2)));
#endif
} // namespace AV1CornerMatch
} // namespace test_libaom