111 строки
3.1 KiB
C++
111 строки
3.1 KiB
C++
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <math.h>
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#include <stdlib.h>
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#include <new>
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "test/acm_random.h"
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#include "test/util.h"
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#include "./vpx_config.h"
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#include "vpx_ports/msvc.h"
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#undef CONFIG_COEFFICIENT_RANGE_CHECKING
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#define CONFIG_COEFFICIENT_RANGE_CHECKING 1
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#include "vp10/encoder/dct.c"
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using libvpx_test::ACMRandom;
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namespace {
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void reference_dct_1d(const double *in, double *out, int size) {
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const double kInvSqrt2 = 0.707106781186547524400844362104;
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for (int k = 0; k < size; ++k) {
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out[k] = 0;
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for (int n = 0; n < size; ++n) {
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out[k] += in[n] * cos(PI * (2 * n + 1) * k / (2 * size));
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}
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if (k == 0)
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out[k] = out[k] * kInvSqrt2;
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}
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}
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typedef void (*FdctFuncRef)(const double *in, double *out, int size);
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typedef void (*IdctFuncRef)(const double *in, double *out, int size);
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typedef void (*FdctFunc)(const tran_low_t *in, tran_low_t *out);
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typedef void (*IdctFunc)(const tran_low_t *in, tran_low_t *out);
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class TransTestBase {
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public:
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virtual ~TransTestBase() {}
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protected:
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void RunFwdAccuracyCheck() {
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tran_low_t *input = new tran_low_t[txfm_size_];
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tran_low_t *output = new tran_low_t[txfm_size_];
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double *ref_input = new double[txfm_size_];
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double *ref_output = new double[txfm_size_];
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ACMRandom rnd(ACMRandom::DeterministicSeed());
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const int count_test_block = 5000;
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for (int ti = 0; ti < count_test_block; ++ti) {
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for (int ni = 0; ni < txfm_size_; ++ni) {
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input[ni] = rnd.Rand8() - rnd.Rand8();
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ref_input[ni] = static_cast<double>(input[ni]);
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}
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fwd_txfm_(input, output);
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fwd_txfm_ref_(ref_input, ref_output, txfm_size_);
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for (int ni = 0; ni < txfm_size_; ++ni) {
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EXPECT_LE(
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abs(output[ni] - static_cast<tran_low_t>(round(ref_output[ni]))),
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max_error_);
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}
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}
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delete[] input;
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delete[] output;
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delete[] ref_input;
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delete[] ref_output;
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}
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double max_error_;
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int txfm_size_;
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FdctFunc fwd_txfm_;
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FdctFuncRef fwd_txfm_ref_;
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};
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typedef std::tr1::tuple<FdctFunc, FdctFuncRef, int, int> FdctParam;
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class Vp10FwdTxfm
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: public TransTestBase,
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public ::testing::TestWithParam<FdctParam> {
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public:
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virtual void SetUp() {
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fwd_txfm_ = GET_PARAM(0);
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fwd_txfm_ref_ = GET_PARAM(1);
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txfm_size_ = GET_PARAM(2);
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max_error_ = GET_PARAM(3);
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}
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virtual void TearDown() {}
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};
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TEST_P(Vp10FwdTxfm, RunFwdAccuracyCheck) {
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RunFwdAccuracyCheck();
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}
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INSTANTIATE_TEST_CASE_P(
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C, Vp10FwdTxfm,
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::testing::Values(
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FdctParam(&fdct4, &reference_dct_1d, 4, 1),
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FdctParam(&fdct8, &reference_dct_1d, 8, 1),
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FdctParam(&fdct16, &reference_dct_1d, 16, 2)));
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} // namespace
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