321 строка
9.7 KiB
C++
321 строка
9.7 KiB
C++
/*
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* Copyright (c) 2013 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 <string.h>
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "./vp10_rtcd.h"
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#include "./vpx_dsp_rtcd.h"
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#include "test/acm_random.h"
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#include "test/clear_system_state.h"
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#include "test/register_state_check.h"
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#include "test/util.h"
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#include "vp10/common/blockd.h"
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#include "vp10/common/scan.h"
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#include "vpx/vpx_integer.h"
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#include "vp10/common/vp10_inv_txfm.h"
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using libvpx_test::ACMRandom;
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namespace {
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const double kInvSqrt2 = 0.707106781186547524400844362104;
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void reference_idct_1d(const double *in, double *out, int size) {
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for (int n = 0; n < size; ++n) {
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out[n] = 0;
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for (int k = 0; k < size; ++k) {
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if (k == 0)
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out[n] += kInvSqrt2 * in[k] * cos(PI * (2 * n + 1) * k / (2 * size));
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else
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out[n] += in[k] * cos(PI * (2 * n + 1) * k / (2 * size));
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}
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}
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}
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typedef void (*IdctFuncRef)(const double *in, double *out, int size);
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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 RunInvAccuracyCheck() {
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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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IdctFunc fwd_txfm_;
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IdctFuncRef fwd_txfm_ref_;
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};
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typedef std::tr1::tuple<IdctFunc, IdctFuncRef, int, int> IdctParam;
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class Vp10InvTxfm
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: public TransTestBase,
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public ::testing::TestWithParam<IdctParam> {
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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(Vp10InvTxfm, RunInvAccuracyCheck) {
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RunInvAccuracyCheck();
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}
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INSTANTIATE_TEST_CASE_P(
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C, Vp10InvTxfm,
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::testing::Values(
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IdctParam(&vp10_idct4_c, &reference_idct_1d, 4, 1),
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IdctParam(&vp10_idct8_c, &reference_idct_1d, 8, 2),
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IdctParam(&vp10_idct16_c, &reference_idct_1d, 16, 4),
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IdctParam(&vp10_idct32_c, &reference_idct_1d, 32, 6))
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);
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typedef void (*FwdTxfmFunc)(const int16_t *in, tran_low_t *out, int stride);
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typedef void (*InvTxfmFunc)(const tran_low_t *in, uint8_t *out, int stride);
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typedef std::tr1::tuple<FwdTxfmFunc,
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InvTxfmFunc,
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InvTxfmFunc,
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TX_SIZE, int> PartialInvTxfmParam;
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const int kMaxNumCoeffs = 1024;
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class Vp10PartialIDctTest
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: public ::testing::TestWithParam<PartialInvTxfmParam> {
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public:
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virtual ~Vp10PartialIDctTest() {}
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virtual void SetUp() {
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ftxfm_ = GET_PARAM(0);
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full_itxfm_ = GET_PARAM(1);
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partial_itxfm_ = GET_PARAM(2);
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tx_size_ = GET_PARAM(3);
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last_nonzero_ = GET_PARAM(4);
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}
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virtual void TearDown() { libvpx_test::ClearSystemState(); }
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protected:
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int last_nonzero_;
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TX_SIZE tx_size_;
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FwdTxfmFunc ftxfm_;
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InvTxfmFunc full_itxfm_;
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InvTxfmFunc partial_itxfm_;
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};
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TEST_P(Vp10PartialIDctTest, RunQuantCheck) {
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ACMRandom rnd(ACMRandom::DeterministicSeed());
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int size;
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switch (tx_size_) {
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case TX_4X4:
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size = 4;
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break;
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case TX_8X8:
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size = 8;
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break;
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case TX_16X16:
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size = 16;
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break;
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case TX_32X32:
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size = 32;
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break;
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default:
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FAIL() << "Wrong Size!";
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break;
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}
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DECLARE_ALIGNED(16, tran_low_t, test_coef_block1[kMaxNumCoeffs]);
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DECLARE_ALIGNED(16, tran_low_t, test_coef_block2[kMaxNumCoeffs]);
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DECLARE_ALIGNED(16, uint8_t, dst1[kMaxNumCoeffs]);
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DECLARE_ALIGNED(16, uint8_t, dst2[kMaxNumCoeffs]);
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const int count_test_block = 1000;
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const int block_size = size * size;
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DECLARE_ALIGNED(16, int16_t, input_extreme_block[kMaxNumCoeffs]);
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DECLARE_ALIGNED(16, tran_low_t, output_ref_block[kMaxNumCoeffs]);
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int max_error = 0;
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for (int i = 0; i < count_test_block; ++i) {
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// clear out destination buffer
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memset(dst1, 0, sizeof(*dst1) * block_size);
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memset(dst2, 0, sizeof(*dst2) * block_size);
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memset(test_coef_block1, 0, sizeof(*test_coef_block1) * block_size);
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memset(test_coef_block2, 0, sizeof(*test_coef_block2) * block_size);
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ACMRandom rnd(ACMRandom::DeterministicSeed());
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for (int i = 0; i < count_test_block; ++i) {
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// Initialize a test block with input range [-255, 255].
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if (i == 0) {
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for (int j = 0; j < block_size; ++j)
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input_extreme_block[j] = 255;
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} else if (i == 1) {
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for (int j = 0; j < block_size; ++j)
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input_extreme_block[j] = -255;
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} else {
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for (int j = 0; j < block_size; ++j) {
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input_extreme_block[j] = rnd.Rand8() % 2 ? 255 : -255;
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}
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}
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ftxfm_(input_extreme_block, output_ref_block, size);
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// quantization with maximum allowed step sizes
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test_coef_block1[0] = (output_ref_block[0] / 1336) * 1336;
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for (int j = 1; j < last_nonzero_; ++j)
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test_coef_block1[get_scan(tx_size_, DCT_DCT, 0)->scan[j]]
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= (output_ref_block[j] / 1828) * 1828;
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}
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ASM_REGISTER_STATE_CHECK(full_itxfm_(test_coef_block1, dst1, size));
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ASM_REGISTER_STATE_CHECK(partial_itxfm_(test_coef_block1, dst2, size));
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for (int j = 0; j < block_size; ++j) {
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const int diff = dst1[j] - dst2[j];
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const int error = diff * diff;
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if (max_error < error)
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max_error = error;
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}
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}
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EXPECT_EQ(0, max_error)
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<< "Error: partial inverse transform produces different results";
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}
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TEST_P(Vp10PartialIDctTest, ResultsMatch) {
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ACMRandom rnd(ACMRandom::DeterministicSeed());
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int size;
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switch (tx_size_) {
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case TX_4X4:
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size = 4;
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break;
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case TX_8X8:
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size = 8;
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break;
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case TX_16X16:
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size = 16;
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break;
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case TX_32X32:
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size = 32;
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break;
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default:
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FAIL() << "Wrong Size!";
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break;
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}
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DECLARE_ALIGNED(16, tran_low_t, test_coef_block1[kMaxNumCoeffs]);
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DECLARE_ALIGNED(16, tran_low_t, test_coef_block2[kMaxNumCoeffs]);
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DECLARE_ALIGNED(16, uint8_t, dst1[kMaxNumCoeffs]);
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DECLARE_ALIGNED(16, uint8_t, dst2[kMaxNumCoeffs]);
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const int count_test_block = 1000;
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const int max_coeff = 32766 / 4;
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const int block_size = size * size;
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int max_error = 0;
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for (int i = 0; i < count_test_block; ++i) {
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// clear out destination buffer
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memset(dst1, 0, sizeof(*dst1) * block_size);
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memset(dst2, 0, sizeof(*dst2) * block_size);
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memset(test_coef_block1, 0, sizeof(*test_coef_block1) * block_size);
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memset(test_coef_block2, 0, sizeof(*test_coef_block2) * block_size);
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int max_energy_leftover = max_coeff * max_coeff;
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for (int j = 0; j < last_nonzero_; ++j) {
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int16_t coef = static_cast<int16_t>(sqrt(1.0 * max_energy_leftover) *
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(rnd.Rand16() - 32768) / 65536);
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max_energy_leftover -= coef * coef;
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if (max_energy_leftover < 0) {
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max_energy_leftover = 0;
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coef = 0;
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}
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test_coef_block1[get_scan(tx_size_, DCT_DCT, 0)->scan[j]] = coef;
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}
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memcpy(test_coef_block2, test_coef_block1,
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sizeof(*test_coef_block2) * block_size);
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ASM_REGISTER_STATE_CHECK(full_itxfm_(test_coef_block1, dst1, size));
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ASM_REGISTER_STATE_CHECK(partial_itxfm_(test_coef_block2, dst2, size));
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for (int j = 0; j < block_size; ++j) {
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const int diff = dst1[j] - dst2[j];
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const int error = diff * diff;
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if (max_error < error)
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max_error = error;
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}
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}
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EXPECT_EQ(0, max_error)
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<< "Error: partial inverse transform produces different results";
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}
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using std::tr1::make_tuple;
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INSTANTIATE_TEST_CASE_P(
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C, Vp10PartialIDctTest,
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::testing::Values(
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make_tuple(&vp10_fdct32x32_c,
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&vp10_idct32x32_1024_add_c,
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&vp10_idct32x32_34_add_c,
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TX_32X32, 34),
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make_tuple(&vp10_fdct32x32_c,
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&vp10_idct32x32_1024_add_c,
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&vp10_idct32x32_1_add_c,
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TX_32X32, 1),
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make_tuple(&vp10_fdct16x16_c,
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&vp10_idct16x16_256_add_c,
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&vp10_idct16x16_10_add_c,
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TX_16X16, 10),
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make_tuple(&vp10_fdct16x16_c,
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&vp10_idct16x16_256_add_c,
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&vp10_idct16x16_1_add_c,
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TX_16X16, 1),
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make_tuple(&vp10_fdct8x8_c,
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&vp10_idct8x8_64_add_c,
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&vp10_idct8x8_12_add_c,
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TX_8X8, 12),
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make_tuple(&vp10_fdct8x8_c,
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&vp10_idct8x8_64_add_c,
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&vp10_idct8x8_1_add_c,
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TX_8X8, 1),
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make_tuple(&vp10_fdct4x4_c,
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&vp10_idct4x4_16_add_c,
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&vp10_idct4x4_1_add_c,
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TX_4X4, 1)));
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} // namespace
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