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Diffstat (limited to 'third_party/aom/test/transform_test_base.h')
| -rw-r--r-- | third_party/aom/test/transform_test_base.h | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/third_party/aom/test/transform_test_base.h b/third_party/aom/test/transform_test_base.h new file mode 100644 index 000000000..4c1a55496 --- /dev/null +++ b/third_party/aom/test/transform_test_base.h @@ -0,0 +1,367 @@ +/* + * 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 TEST_TRANSFORM_TEST_BASE_H_ +#define TEST_TRANSFORM_TEST_BASE_H_ + +#include "./aom_config.h" +#include "aom_mem/aom_mem.h" +#include "aom/aom_codec.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; + +typedef void (*FhtFunc)(const int16_t *in, tran_low_t *out, int stride, + int tx_type); + +typedef void (*IhtFunc)(const tran_low_t *in, uint8_t *out, int stride, + int tx_type); + +class TransformTestBase { + public: + virtual ~TransformTestBase() {} + + protected: + virtual void RunFwdTxfm(const int16_t *in, tran_low_t *out, int stride) = 0; + + virtual void RunInvTxfm(const tran_low_t *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_)); + tran_low_t *test_temp_block = reinterpret_cast<tran_low_t *>( + aom_memalign(16, sizeof(tran_low_t) * num_coeffs_)); + uint8_t *dst = reinterpret_cast<uint8_t *>( + aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); + uint8_t *src = reinterpret_cast<uint8_t *>( + aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); +#if CONFIG_HIGHBITDEPTH + uint16_t *dst16 = reinterpret_cast<uint16_t *>( + aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); + uint16_t *src16 = reinterpret_cast<uint16_t *>( + aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); +#endif + + 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]; +#if CONFIG_HIGHBITDEPTH + } else { + src16[j] = rnd.Rand16() & mask_; + dst16[j] = rnd.Rand16() & mask_; + test_input_block[j] = src16[j] - dst16[j]; +#endif + } + } + + ASM_REGISTER_STATE_CHECK( + RunFwdTxfm(test_input_block, test_temp_block, pitch_)); + if (bit_depth_ == AOM_BITS_8) { + ASM_REGISTER_STATE_CHECK(RunInvTxfm(test_temp_block, dst, pitch_)); +#if CONFIG_HIGHBITDEPTH + } else { + ASM_REGISTER_STATE_CHECK( + RunInvTxfm(test_temp_block, CONVERT_TO_BYTEPTR(dst16), pitch_)); +#endif + } + + for (int j = 0; j < num_coeffs_; ++j) { +#if CONFIG_HIGHBITDEPTH + const int diff = + bit_depth_ == AOM_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j]; +#else + ASSERT_EQ(AOM_BITS_8, bit_depth_); + const int diff = dst[j] - src[j]; +#endif + 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); +#if CONFIG_HIGHBITDEPTH + aom_free(dst16); + aom_free(src16); +#endif + } + + 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_)); + tran_low_t *output_ref_block = reinterpret_cast<tran_low_t *>( + aom_memalign(16, sizeof(tran_low_t) * num_coeffs_)); + tran_low_t *output_block = reinterpret_cast<tran_low_t *>( + aom_memalign(16, sizeof(tran_low_t) * num_coeffs_)); + + 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(); +#if CONFIG_HIGHBITDEPTH + } else { + output_block[out_idx] = output_ref_block[out_idx] = + rnd.Rand16() & mask_; +#endif + } + } + } + + fwd_txfm_ref(input_block, output_ref_block, stride, tx_type_); + ASM_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_)); + tran_low_t *trans_block = reinterpret_cast<tran_low_t *>( + aom_memalign(16, sizeof(tran_low_t) * num_coeffs_)); + uint8_t *output_block = reinterpret_cast<uint8_t *>( + aom_memalign(16, sizeof(uint8_t) * stride * height_)); + uint8_t *output_ref_block = reinterpret_cast<uint8_t *>( + aom_memalign(16, sizeof(uint8_t) * stride * height_)); + + 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_, tx_type_); + + inv_txfm_ref(trans_block, output_ref_block, stride, tx_type_); + ASM_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_)); + tran_low_t *output_ref_block = reinterpret_cast<tran_low_t *>( + aom_memalign(16, sizeof(tran_low_t) * num_coeffs_)); + tran_low_t *output_block = reinterpret_cast<tran_low_t *>( + aom_memalign(16, sizeof(tran_low_t) * num_coeffs_)); + + 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_, tx_type_); + ASM_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) { + EXPECT_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_)); + tran_low_t *coeff = reinterpret_cast<tran_low_t *>( + aom_memalign(16, sizeof(tran_low_t) * num_coeffs_)); + uint8_t *dst = reinterpret_cast<uint8_t *>( + aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); + uint8_t *src = reinterpret_cast<uint8_t *>( + aom_memalign(16, sizeof(uint8_t) * num_coeffs_)); + +#if CONFIG_HIGHBITDEPTH + uint16_t *dst16 = reinterpret_cast<uint16_t *>( + aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); + uint16_t *src16 = reinterpret_cast<uint16_t *>( + aom_memalign(16, sizeof(uint16_t) * num_coeffs_)); +#endif + + 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]; +#if CONFIG_HIGHBITDEPTH + } else { + src16[j] = rnd.Rand16() & mask_; + dst16[j] = rnd.Rand16() & mask_; + in[j] = src16[j] - dst16[j]; +#endif + } + } + + fwd_txfm_ref(in, coeff, pitch_, tx_type_); + + if (bit_depth_ == AOM_BITS_8) { + ASM_REGISTER_STATE_CHECK(RunInvTxfm(coeff, dst, pitch_)); +#if CONFIG_HIGHBITDEPTH + } else { + ASM_REGISTER_STATE_CHECK( + RunInvTxfm(coeff, CONVERT_TO_BYTEPTR(dst16), pitch_)); +#endif + } + + for (int j = 0; j < num_coeffs_; ++j) { +#if CONFIG_HIGHBITDEPTH + const int diff = + bit_depth_ == AOM_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j]; +#else + const int diff = dst[j] - src[j]; +#endif + const uint32_t error = diff * diff; + EXPECT_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); +#if CONFIG_HIGHBITDEPTH + aom_free(src16); + aom_free(dst16); +#endif + } + + int pitch_; + int height_; + int tx_type_; + FhtFunc fwd_txfm_ref; + IhtFunc inv_txfm_ref; + aom_bit_depth_t bit_depth_; + int mask_; + int num_coeffs_; + + 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 // TEST_TRANSFORM_TEST_BASE_H_ |