| /* |
| * 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. |
| */ |
| |
| #ifndef AOM_TEST_TRANSFORM_TEST_BASE_H_ |
| #define AOM_TEST_TRANSFORM_TEST_BASE_H_ |
| |
| #include "third_party/googletest/src/googletest/include/gtest/gtest.h" |
| |
| #include "aom/aom_codec.h" |
| #include "aom_dsp/txfm_common.h" |
| #include "aom_mem/aom_mem.h" |
| #include "test/acm_random.h" |
| |
| namespace libaom_test { |
| |
| // Note: |
| // Same constant are defined in av1/common/av1_entropy.h and |
| // av1/common/entropy.h. Goal is to make this base class |
| // to use for future codec transform testing. But including |
| // either of them would lead to compiling error when we do |
| // unit test for another codec. Suggest to move the definition |
| // to a aom header file. |
| const int kDctMaxValue = 16384; |
| |
| template <typename OutputType> |
| using FhtFunc = void (*)(const int16_t *in, OutputType *out, int stride, |
| TxfmParam *txfm_param); |
| |
| template <typename OutputType> |
| using IhtFunc = void (*)(const tran_low_t *in, uint8_t *out, int stride, |
| const TxfmParam *txfm_param); |
| |
| template <typename OutType> |
| class TransformTestBase { |
| public: |
| virtual ~TransformTestBase() = default; |
| |
| protected: |
| virtual void RunFwdTxfm(const int16_t *in, OutType *out, int stride) = 0; |
| |
| virtual void RunInvTxfm(const OutType *out, uint8_t *dst, int stride) = 0; |
| |
| void RunAccuracyCheck(uint32_t ref_max_error, double ref_avg_error) { |
| ACMRandom rnd(ACMRandom::DeterministicSeed()); |
| uint32_t max_error = 0; |
| int64_t total_error = 0; |
| const int count_test_block = 10000; |
| |
| int16_t *test_input_block = reinterpret_cast<int16_t *>( |
| aom_memalign(16, sizeof(int16_t) * num_coeffs_)); |
| ASSERT_NE(test_input_block, nullptr); |
| OutType *test_temp_block = reinterpret_cast<OutType *>( |
| aom_memalign(16, sizeof(test_temp_block[0]) * num_coeffs_)); |
| ASSERT_NE(test_temp_block, nullptr); |
| uint8_t *dst = reinterpret_cast<uint8_t *>( |
| aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); |
| ASSERT_NE(dst, nullptr); |
| uint8_t *src = reinterpret_cast<uint8_t *>( |
| aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); |
| ASSERT_NE(src, nullptr); |
| uint16_t *dst16 = reinterpret_cast<uint16_t *>( |
| aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); |
| ASSERT_NE(dst16, nullptr); |
| uint16_t *src16 = reinterpret_cast<uint16_t *>( |
| aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); |
| ASSERT_NE(src16, nullptr); |
| |
| for (int i = 0; i < count_test_block; ++i) { |
| // Initialize a test block with input range [-255, 255]. |
| for (int j = 0; j < num_coeffs_; ++j) { |
| if (bit_depth_ == AOM_BITS_8) { |
| src[j] = rnd.Rand8(); |
| dst[j] = rnd.Rand8(); |
| test_input_block[j] = src[j] - dst[j]; |
| } else { |
| src16[j] = rnd.Rand16() & mask_; |
| dst16[j] = rnd.Rand16() & mask_; |
| test_input_block[j] = src16[j] - dst16[j]; |
| } |
| } |
| |
| API_REGISTER_STATE_CHECK( |
| RunFwdTxfm(test_input_block, test_temp_block, pitch_)); |
| if (bit_depth_ == AOM_BITS_8) { |
| API_REGISTER_STATE_CHECK(RunInvTxfm(test_temp_block, dst, pitch_)); |
| } else { |
| API_REGISTER_STATE_CHECK( |
| RunInvTxfm(test_temp_block, CONVERT_TO_BYTEPTR(dst16), pitch_)); |
| } |
| |
| for (int j = 0; j < num_coeffs_; ++j) { |
| const int diff = |
| bit_depth_ == AOM_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j]; |
| const uint32_t error = diff * diff; |
| if (max_error < error) max_error = error; |
| total_error += error; |
| } |
| } |
| |
| double avg_error = total_error * 1. / count_test_block / num_coeffs_; |
| |
| EXPECT_GE(ref_max_error, max_error) |
| << "Error: FHT/IHT has an individual round trip error > " |
| << ref_max_error; |
| |
| EXPECT_GE(ref_avg_error, avg_error) |
| << "Error: FHT/IHT has average round trip error > " << ref_avg_error |
| << " per block"; |
| |
| aom_free(test_input_block); |
| aom_free(test_temp_block); |
| aom_free(dst); |
| aom_free(src); |
| aom_free(dst16); |
| aom_free(src16); |
| } |
| |
| void RunCoeffCheck() { |
| ACMRandom rnd(ACMRandom::DeterministicSeed()); |
| const int count_test_block = 5000; |
| |
| // Use a stride value which is not the width of any transform, to catch |
| // cases where the transforms use the stride incorrectly. |
| int stride = 96; |
| |
| int16_t *input_block = reinterpret_cast<int16_t *>( |
| aom_memalign(16, sizeof(int16_t) * stride * height_)); |
| ASSERT_NE(input_block, nullptr); |
| OutType *output_ref_block = reinterpret_cast<OutType *>( |
| aom_memalign(16, sizeof(output_ref_block[0]) * num_coeffs_)); |
| ASSERT_NE(output_ref_block, nullptr); |
| OutType *output_block = reinterpret_cast<OutType *>( |
| aom_memalign(16, sizeof(output_block[0]) * num_coeffs_)); |
| ASSERT_NE(output_block, nullptr); |
| |
| for (int i = 0; i < count_test_block; ++i) { |
| int j, k; |
| for (j = 0; j < height_; ++j) { |
| for (k = 0; k < pitch_; ++k) { |
| int in_idx = j * stride + k; |
| int out_idx = j * pitch_ + k; |
| input_block[in_idx] = (rnd.Rand16() & mask_) - (rnd.Rand16() & mask_); |
| if (bit_depth_ == AOM_BITS_8) { |
| output_block[out_idx] = output_ref_block[out_idx] = rnd.Rand8(); |
| } else { |
| output_block[out_idx] = output_ref_block[out_idx] = |
| rnd.Rand16() & mask_; |
| } |
| } |
| } |
| |
| fwd_txfm_ref(input_block, output_ref_block, stride, &txfm_param_); |
| API_REGISTER_STATE_CHECK(RunFwdTxfm(input_block, output_block, stride)); |
| |
| // The minimum quant value is 4. |
| for (j = 0; j < height_; ++j) { |
| for (k = 0; k < pitch_; ++k) { |
| int out_idx = j * pitch_ + k; |
| ASSERT_EQ(output_block[out_idx], output_ref_block[out_idx]) |
| << "Error: not bit-exact result at index: " << out_idx |
| << " at test block: " << i; |
| } |
| } |
| } |
| aom_free(input_block); |
| aom_free(output_ref_block); |
| aom_free(output_block); |
| } |
| |
| void RunInvCoeffCheck() { |
| ACMRandom rnd(ACMRandom::DeterministicSeed()); |
| const int count_test_block = 5000; |
| |
| // Use a stride value which is not the width of any transform, to catch |
| // cases where the transforms use the stride incorrectly. |
| int stride = 96; |
| |
| int16_t *input_block = reinterpret_cast<int16_t *>( |
| aom_memalign(16, sizeof(int16_t) * num_coeffs_)); |
| ASSERT_NE(input_block, nullptr); |
| OutType *trans_block = reinterpret_cast<OutType *>( |
| aom_memalign(16, sizeof(trans_block[0]) * num_coeffs_)); |
| ASSERT_NE(trans_block, nullptr); |
| uint8_t *output_block = reinterpret_cast<uint8_t *>( |
| aom_memalign(16, sizeof(uint8_t) * stride * height_)); |
| ASSERT_NE(output_block, nullptr); |
| uint8_t *output_ref_block = reinterpret_cast<uint8_t *>( |
| aom_memalign(16, sizeof(uint8_t) * stride * height_)); |
| ASSERT_NE(output_ref_block, nullptr); |
| |
| for (int i = 0; i < count_test_block; ++i) { |
| // Initialize a test block with input range [-mask_, mask_]. |
| int j, k; |
| for (j = 0; j < height_; ++j) { |
| for (k = 0; k < pitch_; ++k) { |
| int in_idx = j * pitch_ + k; |
| int out_idx = j * stride + k; |
| input_block[in_idx] = (rnd.Rand16() & mask_) - (rnd.Rand16() & mask_); |
| output_ref_block[out_idx] = rnd.Rand16() & mask_; |
| output_block[out_idx] = output_ref_block[out_idx]; |
| } |
| } |
| |
| fwd_txfm_ref(input_block, trans_block, pitch_, &txfm_param_); |
| |
| inv_txfm_ref(trans_block, output_ref_block, stride, &txfm_param_); |
| API_REGISTER_STATE_CHECK(RunInvTxfm(trans_block, output_block, stride)); |
| |
| for (j = 0; j < height_; ++j) { |
| for (k = 0; k < pitch_; ++k) { |
| int out_idx = j * stride + k; |
| ASSERT_EQ(output_block[out_idx], output_ref_block[out_idx]) |
| << "Error: not bit-exact result at index: " << out_idx |
| << " j = " << j << " k = " << k << " at test block: " << i; |
| } |
| } |
| } |
| aom_free(input_block); |
| aom_free(trans_block); |
| aom_free(output_ref_block); |
| aom_free(output_block); |
| } |
| |
| void RunMemCheck() { |
| ACMRandom rnd(ACMRandom::DeterministicSeed()); |
| const int count_test_block = 5000; |
| |
| int16_t *input_extreme_block = reinterpret_cast<int16_t *>( |
| aom_memalign(16, sizeof(int16_t) * num_coeffs_)); |
| ASSERT_NE(input_extreme_block, nullptr); |
| OutType *output_ref_block = reinterpret_cast<OutType *>( |
| aom_memalign(16, sizeof(output_ref_block[0]) * num_coeffs_)); |
| ASSERT_NE(output_ref_block, nullptr); |
| OutType *output_block = reinterpret_cast<OutType *>( |
| aom_memalign(16, sizeof(output_block[0]) * num_coeffs_)); |
| ASSERT_NE(output_block, nullptr); |
| |
| for (int i = 0; i < count_test_block; ++i) { |
| // Initialize a test block with input range [-mask_, mask_]. |
| for (int j = 0; j < num_coeffs_; ++j) { |
| input_extreme_block[j] = rnd.Rand8() % 2 ? mask_ : -mask_; |
| } |
| if (i == 0) { |
| for (int j = 0; j < num_coeffs_; ++j) input_extreme_block[j] = mask_; |
| } else if (i == 1) { |
| for (int j = 0; j < num_coeffs_; ++j) input_extreme_block[j] = -mask_; |
| } |
| |
| fwd_txfm_ref(input_extreme_block, output_ref_block, pitch_, &txfm_param_); |
| API_REGISTER_STATE_CHECK( |
| RunFwdTxfm(input_extreme_block, output_block, pitch_)); |
| |
| int row_length = FindRowLength(); |
| // The minimum quant value is 4. |
| for (int j = 0; j < num_coeffs_; ++j) { |
| ASSERT_EQ(output_block[j], output_ref_block[j]) |
| << "Not bit-exact at test index: " << i << ", " |
| << "j = " << j << std::endl; |
| EXPECT_GE(row_length * kDctMaxValue << (bit_depth_ - 8), |
| abs(output_block[j])) |
| << "Error: NxN FDCT has coefficient larger than N*DCT_MAX_VALUE"; |
| } |
| } |
| aom_free(input_extreme_block); |
| aom_free(output_ref_block); |
| aom_free(output_block); |
| } |
| |
| void RunInvAccuracyCheck(int limit) { |
| ACMRandom rnd(ACMRandom::DeterministicSeed()); |
| const int count_test_block = 1000; |
| |
| int16_t *in = reinterpret_cast<int16_t *>( |
| aom_memalign(16, sizeof(int16_t) * num_coeffs_)); |
| ASSERT_NE(in, nullptr); |
| OutType *coeff = reinterpret_cast<OutType *>( |
| aom_memalign(16, sizeof(coeff[0]) * num_coeffs_)); |
| ASSERT_NE(coeff, nullptr); |
| uint8_t *dst = reinterpret_cast<uint8_t *>( |
| aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); |
| ASSERT_NE(dst, nullptr); |
| uint8_t *src = reinterpret_cast<uint8_t *>( |
| aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); |
| ASSERT_NE(src, nullptr); |
| |
| uint16_t *dst16 = reinterpret_cast<uint16_t *>( |
| aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); |
| ASSERT_NE(dst16, nullptr); |
| uint16_t *src16 = reinterpret_cast<uint16_t *>( |
| aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); |
| ASSERT_NE(src16, nullptr); |
| |
| for (int i = 0; i < count_test_block; ++i) { |
| // Initialize a test block with input range [-mask_, mask_]. |
| for (int j = 0; j < num_coeffs_; ++j) { |
| if (bit_depth_ == AOM_BITS_8) { |
| src[j] = rnd.Rand8(); |
| dst[j] = rnd.Rand8(); |
| in[j] = src[j] - dst[j]; |
| } else { |
| src16[j] = rnd.Rand16() & mask_; |
| dst16[j] = rnd.Rand16() & mask_; |
| in[j] = src16[j] - dst16[j]; |
| } |
| } |
| |
| fwd_txfm_ref(in, coeff, pitch_, &txfm_param_); |
| |
| if (bit_depth_ == AOM_BITS_8) { |
| API_REGISTER_STATE_CHECK(RunInvTxfm(coeff, dst, pitch_)); |
| } else { |
| API_REGISTER_STATE_CHECK( |
| RunInvTxfm(coeff, CONVERT_TO_BYTEPTR(dst16), pitch_)); |
| } |
| |
| for (int j = 0; j < num_coeffs_; ++j) { |
| const int diff = |
| bit_depth_ == AOM_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j]; |
| const uint32_t error = diff * diff; |
| ASSERT_GE(static_cast<uint32_t>(limit), error) |
| << "Error: 4x4 IDCT has error " << error << " at index " << j; |
| } |
| } |
| aom_free(in); |
| aom_free(coeff); |
| aom_free(dst); |
| aom_free(src); |
| aom_free(src16); |
| aom_free(dst16); |
| } |
| |
| int pitch_; |
| int height_; |
| FhtFunc<OutType> fwd_txfm_ref; |
| IhtFunc<OutType> inv_txfm_ref; |
| aom_bit_depth_t bit_depth_; |
| int mask_; |
| int num_coeffs_; |
| TxfmParam txfm_param_; |
| |
| private: |
| // Assume transform size is 4x4, 8x8, 16x16,... |
| int FindRowLength() const { |
| int row = 4; |
| if (16 == num_coeffs_) { |
| row = 4; |
| } else if (64 == num_coeffs_) { |
| row = 8; |
| } else if (256 == num_coeffs_) { |
| row = 16; |
| } else if (1024 == num_coeffs_) { |
| row = 32; |
| } |
| return row; |
| } |
| }; |
| |
| } // namespace libaom_test |
| |
| #endif // AOM_TEST_TRANSFORM_TEST_BASE_H_ |
