ref: bf43b4c4b47eff60e52e9d036de8618b4a1fece1
dir: /test/minmax_test.cc/
/* * Copyright (c) 2016 The WebM project authors. 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 <stdlib.h> #include <string.h> #include "third_party/googletest/src/include/gtest/gtest.h" #include "./vpx_dsp_rtcd.h" #include "vpx/vpx_integer.h" #include "test/acm_random.h" #include "test/register_state_check.h" namespace { using ::libvpx_test::ACMRandom; typedef void (*MinMaxFunc)(const uint8_t *a, int a_stride, const uint8_t *b, int b_stride, int *min, int *max); class MinMaxTest : public ::testing::TestWithParam<MinMaxFunc> { public: virtual void SetUp() { mm_func_ = GetParam(); rnd_.Reset(ACMRandom::DeterministicSeed()); } protected: MinMaxFunc mm_func_; ACMRandom rnd_; }; void reference_minmax(const uint8_t *a, int a_stride, const uint8_t *b, int b_stride, int *min_ret, int *max_ret) { int min = 255; int max = 0; for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { const int diff = abs(a[i * a_stride + j] - b[i * b_stride + j]); if (min > diff) min = diff; if (max < diff) max = diff; } } *min_ret = min; *max_ret = max; } TEST_P(MinMaxTest, MinValue) { for (int i = 0; i < 64; i++) { uint8_t a[64], b[64]; memset(a, 0, sizeof(a)); memset(b, 255, sizeof(b)); b[i] = i; // Set a minimum difference of i. int min, max; ASM_REGISTER_STATE_CHECK(mm_func_(a, 8, b, 8, &min, &max)); EXPECT_EQ(255, max); EXPECT_EQ(i, min); } } TEST_P(MinMaxTest, MaxValue) { for (int i = 0; i < 64; i++) { uint8_t a[64], b[64]; memset(a, 0, sizeof(a)); memset(b, 0, sizeof(b)); b[i] = i; // Set a maximum difference of i. int min, max; ASM_REGISTER_STATE_CHECK(mm_func_(a, 8, b, 8, &min, &max)); EXPECT_EQ(i, max); EXPECT_EQ(0, min); } } TEST_P(MinMaxTest, CompareReference) { uint8_t a[64], b[64]; for (int j = 0; j < 64; j++) { a[j] = rnd_.Rand8(); b[j] = rnd_.Rand8(); } int min_ref, max_ref, min, max; reference_minmax(a, 8, b, 8, &min_ref, &max_ref); ASM_REGISTER_STATE_CHECK(mm_func_(a, 8, b, 8, &min, &max)); EXPECT_EQ(max_ref, max); EXPECT_EQ(min_ref, min); } TEST_P(MinMaxTest, CompareReferenceAndVaryStride) { uint8_t a[8 * 64], b[8 * 64]; for (int i = 0; i < 8 * 64; i++) { a[i] = rnd_.Rand8(); b[i] = rnd_.Rand8(); } for (int a_stride = 8; a_stride <= 64; a_stride += 8) { for (int b_stride = 8; b_stride <= 64; b_stride += 8) { int min_ref, max_ref, min, max; reference_minmax(a, a_stride, b, b_stride, &min_ref, &max_ref); ASM_REGISTER_STATE_CHECK(mm_func_(a, a_stride, b, b_stride, &min, &max)); EXPECT_EQ(max_ref, max) << "when a_stride = " << a_stride << " and b_stride = " << b_stride; EXPECT_EQ(min_ref, min) << "when a_stride = " << a_stride << " and b_stride = " << b_stride; } } } INSTANTIATE_TEST_CASE_P(C, MinMaxTest, ::testing::Values(&vpx_minmax_8x8_c)); #if HAVE_SSE2 INSTANTIATE_TEST_CASE_P(SSE2, MinMaxTest, ::testing::Values(&vpx_minmax_8x8_sse2)); #endif #if HAVE_NEON INSTANTIATE_TEST_CASE_P(NEON, MinMaxTest, ::testing::Values(&vpx_minmax_8x8_neon)); #endif #if HAVE_MSA INSTANTIATE_TEST_CASE_P(MSA, MinMaxTest, ::testing::Values(&vpx_minmax_8x8_msa)); #endif } // namespace