(61d00a474) v0.9.7.1
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Regalis
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/*
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* Copyright (c) 2012 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 <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <tuple>
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "./vpx_config.h"
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#if CONFIG_VP9_ENCODER
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#include "./vp9_rtcd.h"
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#endif
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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 "vpx_dsp/ssim.h"
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#include "vpx_mem/vpx_mem.h"
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extern "C" double vpx_get_ssim_metrics(uint8_t *img1, int img1_pitch,
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uint8_t *img2, int img2_pitch, int width,
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int height, Ssimv *sv2, Metrics *m,
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int do_inconsistency);
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using libvpx_test::ACMRandom;
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namespace {
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class ConsistencyTestBase : public ::testing::Test {
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public:
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ConsistencyTestBase(int width, int height) : width_(width), height_(height) {}
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static void SetUpTestCase() {
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source_data_[0] = reinterpret_cast<uint8_t *>(
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vpx_memalign(kDataAlignment, kDataBufferSize));
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reference_data_[0] = reinterpret_cast<uint8_t *>(
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vpx_memalign(kDataAlignment, kDataBufferSize));
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source_data_[1] = reinterpret_cast<uint8_t *>(
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vpx_memalign(kDataAlignment, kDataBufferSize));
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reference_data_[1] = reinterpret_cast<uint8_t *>(
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vpx_memalign(kDataAlignment, kDataBufferSize));
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ssim_array_ = new Ssimv[kDataBufferSize / 16];
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}
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static void ClearSsim() { memset(ssim_array_, 0, kDataBufferSize / 16); }
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static void TearDownTestCase() {
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vpx_free(source_data_[0]);
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source_data_[0] = NULL;
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vpx_free(reference_data_[0]);
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reference_data_[0] = NULL;
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vpx_free(source_data_[1]);
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source_data_[1] = NULL;
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vpx_free(reference_data_[1]);
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reference_data_[1] = NULL;
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delete[] ssim_array_;
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}
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virtual void TearDown() { libvpx_test::ClearSystemState(); }
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protected:
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// Handle frames up to 640x480
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static const int kDataAlignment = 16;
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static const int kDataBufferSize = 640 * 480;
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virtual void SetUp() {
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source_stride_ = (width_ + 31) & ~31;
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reference_stride_ = width_ * 2;
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rnd_.Reset(ACMRandom::DeterministicSeed());
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}
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void FillRandom(uint8_t *data, int stride, int width, int height) {
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for (int h = 0; h < height; ++h) {
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for (int w = 0; w < width; ++w) {
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data[h * stride + w] = rnd_.Rand8();
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}
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}
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}
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void FillRandom(uint8_t *data, int stride) {
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FillRandom(data, stride, width_, height_);
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}
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void Copy(uint8_t *reference, uint8_t *source) {
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memcpy(reference, source, kDataBufferSize);
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}
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void Blur(uint8_t *data, int stride, int taps) {
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int sum = 0;
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int half_taps = taps / 2;
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for (int h = 0; h < height_; ++h) {
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for (int w = 0; w < taps; ++w) {
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sum += data[w + h * stride];
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}
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for (int w = taps; w < width_; ++w) {
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sum += data[w + h * stride] - data[w - taps + h * stride];
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data[w - half_taps + h * stride] = (sum + half_taps) / taps;
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}
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}
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for (int w = 0; w < width_; ++w) {
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for (int h = 0; h < taps; ++h) {
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sum += data[h + w * stride];
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}
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for (int h = taps; h < height_; ++h) {
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sum += data[w + h * stride] - data[(h - taps) * stride + w];
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data[(h - half_taps) * stride + w] = (sum + half_taps) / taps;
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}
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}
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}
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int width_, height_;
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static uint8_t *source_data_[2];
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int source_stride_;
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static uint8_t *reference_data_[2];
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int reference_stride_;
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static Ssimv *ssim_array_;
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Metrics metrics_;
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ACMRandom rnd_;
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};
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#if CONFIG_VP9_ENCODER
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typedef std::tuple<int, int> ConsistencyParam;
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class ConsistencyVP9Test
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: public ConsistencyTestBase,
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public ::testing::WithParamInterface<ConsistencyParam> {
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public:
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ConsistencyVP9Test() : ConsistencyTestBase(GET_PARAM(0), GET_PARAM(1)) {}
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protected:
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double CheckConsistency(int frame) {
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EXPECT_LT(frame, 2) << "Frame to check has to be less than 2.";
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return vpx_get_ssim_metrics(source_data_[frame], source_stride_,
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reference_data_[frame], reference_stride_,
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width_, height_, ssim_array_, &metrics_, 1);
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}
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};
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#endif // CONFIG_VP9_ENCODER
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uint8_t *ConsistencyTestBase::source_data_[2] = { NULL, NULL };
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uint8_t *ConsistencyTestBase::reference_data_[2] = { NULL, NULL };
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Ssimv *ConsistencyTestBase::ssim_array_ = NULL;
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#if CONFIG_VP9_ENCODER
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TEST_P(ConsistencyVP9Test, ConsistencyIsZero) {
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FillRandom(source_data_[0], source_stride_);
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Copy(source_data_[1], source_data_[0]);
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Copy(reference_data_[0], source_data_[0]);
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Blur(reference_data_[0], reference_stride_, 3);
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Copy(reference_data_[1], source_data_[0]);
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Blur(reference_data_[1], reference_stride_, 3);
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double inconsistency = CheckConsistency(1);
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inconsistency = CheckConsistency(0);
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EXPECT_EQ(inconsistency, 0.0)
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<< "Should have 0 inconsistency if they are exactly the same.";
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// If sources are not consistent reference frames inconsistency should
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// be less than if the source is consistent.
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FillRandom(source_data_[0], source_stride_);
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FillRandom(source_data_[1], source_stride_);
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FillRandom(reference_data_[0], reference_stride_);
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FillRandom(reference_data_[1], reference_stride_);
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CheckConsistency(0);
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inconsistency = CheckConsistency(1);
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Copy(source_data_[1], source_data_[0]);
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CheckConsistency(0);
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double inconsistency2 = CheckConsistency(1);
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EXPECT_LT(inconsistency, inconsistency2)
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<< "Should have less inconsistency if source itself is inconsistent.";
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// Less of a blur should be less inconsistent than more blur coming off a
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// a frame with no blur.
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ClearSsim();
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FillRandom(source_data_[0], source_stride_);
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Copy(source_data_[1], source_data_[0]);
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Copy(reference_data_[0], source_data_[0]);
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Copy(reference_data_[1], source_data_[0]);
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Blur(reference_data_[1], reference_stride_, 4);
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CheckConsistency(0);
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inconsistency = CheckConsistency(1);
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ClearSsim();
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Copy(reference_data_[1], source_data_[0]);
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Blur(reference_data_[1], reference_stride_, 8);
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CheckConsistency(0);
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inconsistency2 = CheckConsistency(1);
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EXPECT_LT(inconsistency, inconsistency2)
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<< "Stronger Blur should produce more inconsistency.";
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}
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#endif // CONFIG_VP9_ENCODER
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using std::make_tuple;
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//------------------------------------------------------------------------------
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// C functions
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#if CONFIG_VP9_ENCODER
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const ConsistencyParam c_vp9_tests[] = { make_tuple(320, 240),
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make_tuple(318, 242),
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make_tuple(318, 238) };
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INSTANTIATE_TEST_CASE_P(C, ConsistencyVP9Test,
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::testing::ValuesIn(c_vp9_tests));
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#endif
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} // namespace
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