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/*
* Copyright (c) 2023, 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 "aom_dsp/flow_estimation/disflow.h"
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "config/aom_dsp_rtcd.h"
#include "test/acm_random.h"
#include "test/register_state_check.h"
#include "test/util.h"
#include "test/yuv_video_source.h"
namespace {
using ComputeFlowAtPointFunc = void (*)(const uint8_t *src, const uint8_t *ref,
int x, int y, int width, int height,
int stride, double *u, double *v);
class ComputeFlowTest
: public ::testing::TestWithParam<ComputeFlowAtPointFunc> {
public:
ComputeFlowTest()
: target_func_(GetParam()),
rnd_(libaom_test::ACMRandom::DeterministicSeed()) {}
protected:
void RunCheckOutput(int run_times);
ComputeFlowAtPointFunc target_func_;
libaom_test::ACMRandom rnd_;
};
GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(ComputeFlowTest);
void ComputeFlowTest::RunCheckOutput(int run_times) {
constexpr int kWidth = 352;
constexpr int kHeight = 288;
::libaom_test::YUVVideoSource video("bus_352x288_420_f20_b8.yuv",
AOM_IMG_FMT_I420, kWidth, kHeight, 30, 1,
0, 2);
// Use Y (Luminance) plane.
video.Begin();
uint8_t *src = video.img()->planes[0];
ASSERT_NE(src, nullptr);
video.Next();
uint8_t *ref = video.img()->planes[0];
ASSERT_NE(ref, nullptr);
// Pick a random value between -5 and 5. The range was chosen arbitrarily as
// u and v can take any kind of value in practise, but it shouldn't change the
// outcome of the tests.
const double u_rand = (static_cast<double>(rnd_.Rand8()) / 255) * 10 - 5;
double u_ref = u_rand;
double u_test = u_rand;
const double v_rand = (static_cast<double>(rnd_.Rand8()) / 255) * 10 - 5;
double v_ref = v_rand;
double v_test = v_rand;
// Pick a random point in the frame. If the frame is 352x288, that means we
// can call the function on all values of x comprised between 8 and 344, and
// all values of y comprised between 8 and 280.
const int x = rnd_((kWidth - 8) - 8 + 1) + 8;
const int y = rnd_((kHeight - 8) - 8 + 1) + 8;
aom_usec_timer ref_timer, test_timer;
aom_compute_flow_at_point_c(src, ref, x, y, kWidth, kHeight, kWidth, &u_ref,
&v_ref);
target_func_(src, ref, x, y, kWidth, kHeight, kWidth, &u_test, &v_test);
if (run_times > 1) {
aom_usec_timer_start(&ref_timer);
for (int i = 0; i < run_times; ++i) {
aom_compute_flow_at_point_c(src, ref, x, y, kWidth, kHeight, kWidth,
&u_ref, &v_ref);
}
aom_usec_timer_mark(&ref_timer);
const double elapsed_time_c =
static_cast<double>(aom_usec_timer_elapsed(&ref_timer));
aom_usec_timer_start(&test_timer);
for (int i = 0; i < run_times; ++i) {
target_func_(src, ref, x, y, kWidth, kHeight, kWidth, &u_test, &v_test);
}
aom_usec_timer_mark(&test_timer);
const double elapsed_time_simd =
static_cast<double>(aom_usec_timer_elapsed(&test_timer));
printf("c_time=%fns \t simd_time=%fns \t speedup=%.2f\n", elapsed_time_c,
elapsed_time_simd, (elapsed_time_c / elapsed_time_simd));
} else {
ASSERT_EQ(u_ref, u_test);
ASSERT_EQ(v_ref, v_test);
}
}
TEST_P(ComputeFlowTest, CheckOutput) { RunCheckOutput(1); }
TEST_P(ComputeFlowTest, DISABLED_Speed) { RunCheckOutput(10000000); }
#if HAVE_SSE4_1
INSTANTIATE_TEST_SUITE_P(SSE4_1, ComputeFlowTest,
::testing::Values(aom_compute_flow_at_point_sse4_1));
#endif
#if HAVE_NEON
INSTANTIATE_TEST_SUITE_P(NEON, ComputeFlowTest,
::testing::Values(aom_compute_flow_at_point_neon));
#endif
} // namespace
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