/*
 * Copyright (c) 2021, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 3-Clause Clear License
 * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
 * License was not distributed with this source code in the LICENSE file, you
 * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/.  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
 * aomedia.org/license/patent-license/.
 */
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <tuple>

#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "test/acm_random.h"
#include "test/clear_system_state.h"
#include "test/register_state_check.h"
#include "test/util.h"

#include "config/aom_config.h"
#include "config/aom_dsp_rtcd.h"

#include "aom/aom_integer.h"

using libaom_test::ACMRandom;

namespace {
const int number_of_iterations = 200;

typedef unsigned int (*HighbdMaskedSADFunc)(const uint16_t *src, int src_stride,
                                            const uint16_t *ref, int ref_stride,
                                            const uint16_t *second_pred,
                                            const uint8_t *msk, int msk_stride,
                                            int invert_mask);
typedef std::tuple<HighbdMaskedSADFunc, HighbdMaskedSADFunc>
    HighbdMaskedSADParam;

class HighbdMaskedSADTest
    : public ::testing::TestWithParam<HighbdMaskedSADParam> {
 public:
  virtual ~HighbdMaskedSADTest() {}
  virtual void SetUp() {
    maskedSAD_op_ = GET_PARAM(0);
    ref_maskedSAD_op_ = GET_PARAM(1);
  }

  virtual void TearDown() { libaom_test::ClearSystemState(); }
  void runHighbdMaskedSADTest(int run_times);

 protected:
  HighbdMaskedSADFunc maskedSAD_op_;
  HighbdMaskedSADFunc ref_maskedSAD_op_;
};
GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(HighbdMaskedSADTest);

void HighbdMaskedSADTest::runHighbdMaskedSADTest(int run_times) {
  unsigned int ref_ret = 0, ret = 1;
  ACMRandom rnd(ACMRandom::DeterministicSeed());
  DECLARE_ALIGNED(16, uint16_t, src_ptr[MAX_SB_SIZE * MAX_SB_SIZE]);
  DECLARE_ALIGNED(16, uint16_t, ref_ptr[MAX_SB_SIZE * MAX_SB_SIZE]);
  DECLARE_ALIGNED(16, uint16_t, second_pred_ptr[MAX_SB_SIZE * MAX_SB_SIZE]);
  DECLARE_ALIGNED(16, uint8_t, msk_ptr[MAX_SB_SIZE * MAX_SB_SIZE]);
  int err_count = 0;
  int first_failure = -1;
  int src_stride = MAX_SB_SIZE;
  int ref_stride = MAX_SB_SIZE;
  int msk_stride = MAX_SB_SIZE;
  const int iters = run_times == 1 ? number_of_iterations : 1;
  for (int i = 0; i < iters; ++i) {
    for (int j = 0; j < MAX_SB_SIZE * MAX_SB_SIZE; j++) {
      src_ptr[j] = rnd.Rand16() & 0xfff;
      ref_ptr[j] = rnd.Rand16() & 0xfff;
      second_pred_ptr[j] = rnd.Rand16() & 0xfff;
      msk_ptr[j] = ((rnd.Rand8() & 0x7f) > 64) ? rnd.Rand8() & 0x3f : 64;
    }

    for (int invert_mask = 0; invert_mask < 2; ++invert_mask) {
      aom_usec_timer timer;
      aom_usec_timer_start(&timer);
      for (int repeat = 0; repeat < run_times; ++repeat) {
        ref_ret = ref_maskedSAD_op_(src_ptr, src_stride, ref_ptr, ref_stride,
                                    second_pred_ptr, msk_ptr, msk_stride,
                                    invert_mask);
      }
      aom_usec_timer_mark(&timer);
      const double time1 = static_cast<double>(aom_usec_timer_elapsed(&timer));
      aom_usec_timer_start(&timer);
      if (run_times == 1) {
        ASM_REGISTER_STATE_CHECK(ret = maskedSAD_op_(src_ptr, src_stride,
                                                     ref_ptr, ref_stride,
                                                     second_pred_ptr, msk_ptr,
                                                     msk_stride, invert_mask));
      } else {
        for (int repeat = 0; repeat < run_times; ++repeat) {
          ret =
              maskedSAD_op_(src_ptr, src_stride, ref_ptr, ref_stride,
                            second_pred_ptr, msk_ptr, msk_stride, invert_mask);
        }
      }
      aom_usec_timer_mark(&timer);
      const double time2 = static_cast<double>(aom_usec_timer_elapsed(&timer));
      if (run_times > 10) {
        printf("%7.2f/%7.2fns", time1, time2);
        printf("(%3.2f)\n", time1 / time2);
      }
      if (ret != ref_ret) {
        err_count++;
        if (first_failure == -1) first_failure = i;
      }
    }
  }
  EXPECT_EQ(0, err_count)
      << "Error: High BD Masked SAD Test, output doesn't match. "
      << "First failed at test case " << first_failure;
}

TEST_P(HighbdMaskedSADTest, OperationCheck) { runHighbdMaskedSADTest(1); }

TEST_P(HighbdMaskedSADTest, DISABLED_Speed) { runHighbdMaskedSADTest(1000000); }

using std::make_tuple;

#if HAVE_SSSE3
const HighbdMaskedSADParam hbd_msad_test[] = {
  make_tuple(&aom_highbd_masked_sad4x4_ssse3, &aom_highbd_masked_sad4x4_c),
  make_tuple(&aom_highbd_masked_sad4x8_ssse3, &aom_highbd_masked_sad4x8_c),
  make_tuple(&aom_highbd_masked_sad8x4_ssse3, &aom_highbd_masked_sad8x4_c),
  make_tuple(&aom_highbd_masked_sad8x8_ssse3, &aom_highbd_masked_sad8x8_c),
  make_tuple(&aom_highbd_masked_sad8x16_ssse3, &aom_highbd_masked_sad8x16_c),
  make_tuple(&aom_highbd_masked_sad16x8_ssse3, &aom_highbd_masked_sad16x8_c),
  make_tuple(&aom_highbd_masked_sad16x16_ssse3, &aom_highbd_masked_sad16x16_c),
  make_tuple(&aom_highbd_masked_sad16x32_ssse3, &aom_highbd_masked_sad16x32_c),
  make_tuple(&aom_highbd_masked_sad32x16_ssse3, &aom_highbd_masked_sad32x16_c),
  make_tuple(&aom_highbd_masked_sad32x32_ssse3, &aom_highbd_masked_sad32x32_c),
  make_tuple(&aom_highbd_masked_sad32x64_ssse3, &aom_highbd_masked_sad32x64_c),
  make_tuple(&aom_highbd_masked_sad64x32_ssse3, &aom_highbd_masked_sad64x32_c),
  make_tuple(&aom_highbd_masked_sad64x64_ssse3, &aom_highbd_masked_sad64x64_c),
  make_tuple(&aom_highbd_masked_sad64x128_ssse3,
             &aom_highbd_masked_sad64x128_c),
  make_tuple(&aom_highbd_masked_sad128x64_ssse3,
             &aom_highbd_masked_sad128x64_c),
  make_tuple(&aom_highbd_masked_sad128x128_ssse3,
             &aom_highbd_masked_sad128x128_c),
  make_tuple(&aom_highbd_masked_sad4x16_ssse3, &aom_highbd_masked_sad4x16_c),
  make_tuple(&aom_highbd_masked_sad16x4_ssse3, &aom_highbd_masked_sad16x4_c),
  make_tuple(&aom_highbd_masked_sad8x32_ssse3, &aom_highbd_masked_sad8x32_c),
  make_tuple(&aom_highbd_masked_sad32x8_ssse3, &aom_highbd_masked_sad32x8_c),
  make_tuple(&aom_highbd_masked_sad16x64_ssse3, &aom_highbd_masked_sad16x64_c),
  make_tuple(&aom_highbd_masked_sad64x16_ssse3, &aom_highbd_masked_sad64x16_c),
};

INSTANTIATE_TEST_SUITE_P(SSSE3, HighbdMaskedSADTest,
                         ::testing::ValuesIn(hbd_msad_test));
#endif  // HAVE_SSSE3

#if HAVE_AVX2
const HighbdMaskedSADParam hbd_msad_avx2_test[] = {
  make_tuple(&aom_highbd_masked_sad4x4_avx2, &aom_highbd_masked_sad4x4_ssse3),
  make_tuple(&aom_highbd_masked_sad4x8_avx2, &aom_highbd_masked_sad4x8_ssse3),
  make_tuple(&aom_highbd_masked_sad8x4_avx2, &aom_highbd_masked_sad8x4_ssse3),
  make_tuple(&aom_highbd_masked_sad8x8_avx2, &aom_highbd_masked_sad8x8_ssse3),
  make_tuple(&aom_highbd_masked_sad8x16_avx2, &aom_highbd_masked_sad8x16_ssse3),
  make_tuple(&aom_highbd_masked_sad16x8_avx2, &aom_highbd_masked_sad16x8_ssse3),
  make_tuple(&aom_highbd_masked_sad16x16_avx2,
             &aom_highbd_masked_sad16x16_ssse3),
  make_tuple(&aom_highbd_masked_sad16x32_avx2,
             &aom_highbd_masked_sad16x32_ssse3),
  make_tuple(&aom_highbd_masked_sad32x16_avx2,
             &aom_highbd_masked_sad32x16_ssse3),
  make_tuple(&aom_highbd_masked_sad32x32_avx2,
             &aom_highbd_masked_sad32x32_ssse3),
  make_tuple(&aom_highbd_masked_sad32x64_avx2,
             &aom_highbd_masked_sad32x64_ssse3),
  make_tuple(&aom_highbd_masked_sad64x32_avx2,
             &aom_highbd_masked_sad64x32_ssse3),
  make_tuple(&aom_highbd_masked_sad64x64_avx2,
             &aom_highbd_masked_sad64x64_ssse3),
  make_tuple(&aom_highbd_masked_sad64x128_avx2,
             &aom_highbd_masked_sad64x128_ssse3),
  make_tuple(&aom_highbd_masked_sad128x64_avx2,
             &aom_highbd_masked_sad128x64_ssse3),
  make_tuple(&aom_highbd_masked_sad128x128_avx2,
             &aom_highbd_masked_sad128x128_ssse3),
  make_tuple(&aom_highbd_masked_sad4x16_avx2, &aom_highbd_masked_sad4x16_ssse3),
  make_tuple(&aom_highbd_masked_sad16x4_avx2, &aom_highbd_masked_sad16x4_ssse3),
  make_tuple(&aom_highbd_masked_sad8x32_avx2, &aom_highbd_masked_sad8x32_ssse3),
  make_tuple(&aom_highbd_masked_sad32x8_avx2, &aom_highbd_masked_sad32x8_ssse3),
  make_tuple(&aom_highbd_masked_sad16x64_avx2,
             &aom_highbd_masked_sad16x64_ssse3),
  make_tuple(&aom_highbd_masked_sad64x16_avx2,
             &aom_highbd_masked_sad64x16_ssse3)
};

INSTANTIATE_TEST_SUITE_P(AVX2, HighbdMaskedSADTest,
                         ::testing::ValuesIn(hbd_msad_avx2_test));
#endif  // HAVE_AVX2

}  // namespace