f78d6aa772
Unify the style of fdct4() fdct8() fdct16() Add fdct32() Add range_check() at each stage Add unit test at ../../test/vp10_dct_test.cc Change-Id: I9e912b2c5683862e65c5a21abc3e1c260cca4576
97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
#include <stdlib.h>
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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 "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 PI = 3.141592653589793238462643383279502884;
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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; // initialize out[k]
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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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double max_error;
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int txfmSize;
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FdctFunc fwd_txfm;
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FdctFuncRef fwd_txfm_ref;
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virtual void RunFwdAccuracyCheck() {
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tran_low_t* input = new tran_low_t[txfmSize];
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tran_low_t* output = new tran_low_t[txfmSize];
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double* refInput = new double[txfmSize];
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double* refOutput = new double[txfmSize];
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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 < txfmSize; ++ni) {
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input[ni] = rnd.Rand8() - rnd.Rand8();
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refInput[ni] = (double)input[ni];
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}
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fwd_txfm(input, output);
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fwd_txfm_ref(refInput, refOutput, txfmSize);
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for (int ni = 0; ni < txfmSize; ++ni) {
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EXPECT_LE(abs(output[ni]-(tran_low_t)round(refOutput[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[] refInput;
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delete[] refOutput;
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}
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};
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typedef std::tr1::tuple<FdctFunc, FdctFuncRef, int, int> FdctParam;
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class Vp10FwdDct
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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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txfmSize = 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(Vp10FwdDct, RunFwdAccuracyCheck) {
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RunFwdAccuracyCheck();
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}
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INSTANTIATE_TEST_CASE_P(
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C, Vp10FwdDct,
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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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FdctParam(&fdct32, &reference_dct_1d, 32, 4))
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);
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} // namespace
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