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-rw-r--r--media/libvpx/libvpx/test/consistency_test.cc215
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diff --git a/media/libvpx/libvpx/test/consistency_test.cc b/media/libvpx/libvpx/test/consistency_test.cc
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+/*
+ * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <tuple>
+
+#include "third_party/googletest/src/include/gtest/gtest.h"
+
+#include "./vpx_config.h"
+#if CONFIG_VP9_ENCODER
+#include "./vp9_rtcd.h"
+#endif
+
+#include "test/acm_random.h"
+#include "test/clear_system_state.h"
+#include "test/register_state_check.h"
+#include "test/util.h"
+#include "vpx_dsp/ssim.h"
+#include "vpx_mem/vpx_mem.h"
+
+extern "C" double vpx_get_ssim_metrics(uint8_t *img1, int img1_pitch,
+ uint8_t *img2, int img2_pitch, int width,
+ int height, Ssimv *sv2, Metrics *m,
+ int do_inconsistency);
+
+using libvpx_test::ACMRandom;
+
+namespace {
+class ConsistencyTestBase : public ::testing::Test {
+ public:
+ ConsistencyTestBase(int width, int height) : width_(width), height_(height) {}
+
+ static void SetUpTestSuite() {
+ source_data_[0] = reinterpret_cast<uint8_t *>(
+ vpx_memalign(kDataAlignment, kDataBufferSize));
+ reference_data_[0] = reinterpret_cast<uint8_t *>(
+ vpx_memalign(kDataAlignment, kDataBufferSize));
+ source_data_[1] = reinterpret_cast<uint8_t *>(
+ vpx_memalign(kDataAlignment, kDataBufferSize));
+ reference_data_[1] = reinterpret_cast<uint8_t *>(
+ vpx_memalign(kDataAlignment, kDataBufferSize));
+ ssim_array_ = new Ssimv[kDataBufferSize / 16];
+ }
+
+ static void ClearSsim() { memset(ssim_array_, 0, kDataBufferSize / 16); }
+ static void TearDownTestSuite() {
+ vpx_free(source_data_[0]);
+ source_data_[0] = nullptr;
+ vpx_free(reference_data_[0]);
+ reference_data_[0] = nullptr;
+ vpx_free(source_data_[1]);
+ source_data_[1] = nullptr;
+ vpx_free(reference_data_[1]);
+ reference_data_[1] = nullptr;
+
+ delete[] ssim_array_;
+ }
+
+ void TearDown() override { libvpx_test::ClearSystemState(); }
+
+ protected:
+ // Handle frames up to 640x480
+ static const int kDataAlignment = 16;
+ static const int kDataBufferSize = 640 * 480;
+
+ void SetUp() override {
+ source_stride_ = (width_ + 31) & ~31;
+ reference_stride_ = width_ * 2;
+ rnd_.Reset(ACMRandom::DeterministicSeed());
+ }
+
+ void FillRandom(uint8_t *data, int stride, int width, int height) {
+ for (int h = 0; h < height; ++h) {
+ for (int w = 0; w < width; ++w) {
+ data[h * stride + w] = rnd_.Rand8();
+ }
+ }
+ }
+
+ void FillRandom(uint8_t *data, int stride) {
+ FillRandom(data, stride, width_, height_);
+ }
+
+ void Copy(uint8_t *reference, uint8_t *source) {
+ memcpy(reference, source, kDataBufferSize);
+ }
+
+ void Blur(uint8_t *data, int stride, int taps) {
+ int sum = 0;
+ int half_taps = taps / 2;
+ for (int h = 0; h < height_; ++h) {
+ for (int w = 0; w < taps; ++w) {
+ sum += data[w + h * stride];
+ }
+ for (int w = taps; w < width_; ++w) {
+ sum += data[w + h * stride] - data[w - taps + h * stride];
+ data[w - half_taps + h * stride] = (sum + half_taps) / taps;
+ }
+ }
+ for (int w = 0; w < width_; ++w) {
+ for (int h = 0; h < taps; ++h) {
+ sum += data[h + w * stride];
+ }
+ for (int h = taps; h < height_; ++h) {
+ sum += data[w + h * stride] - data[(h - taps) * stride + w];
+ data[(h - half_taps) * stride + w] = (sum + half_taps) / taps;
+ }
+ }
+ }
+ int width_, height_;
+ static uint8_t *source_data_[2];
+ int source_stride_;
+ static uint8_t *reference_data_[2];
+ int reference_stride_;
+ static Ssimv *ssim_array_;
+ Metrics metrics_;
+
+ ACMRandom rnd_;
+};
+
+#if CONFIG_VP9_ENCODER
+typedef std::tuple<int, int> ConsistencyParam;
+class ConsistencyVP9Test
+ : public ConsistencyTestBase,
+ public ::testing::WithParamInterface<ConsistencyParam> {
+ public:
+ ConsistencyVP9Test() : ConsistencyTestBase(GET_PARAM(0), GET_PARAM(1)) {}
+
+ protected:
+ double CheckConsistency(int frame) {
+ EXPECT_LT(frame, 2) << "Frame to check has to be less than 2.";
+ return vpx_get_ssim_metrics(source_data_[frame], source_stride_,
+ reference_data_[frame], reference_stride_,
+ width_, height_, ssim_array_, &metrics_, 1);
+ }
+};
+#endif // CONFIG_VP9_ENCODER
+
+uint8_t *ConsistencyTestBase::source_data_[2] = { nullptr, nullptr };
+uint8_t *ConsistencyTestBase::reference_data_[2] = { nullptr, nullptr };
+Ssimv *ConsistencyTestBase::ssim_array_ = nullptr;
+
+#if CONFIG_VP9_ENCODER
+TEST_P(ConsistencyVP9Test, ConsistencyIsZero) {
+ FillRandom(source_data_[0], source_stride_);
+ Copy(source_data_[1], source_data_[0]);
+ Copy(reference_data_[0], source_data_[0]);
+ Blur(reference_data_[0], reference_stride_, 3);
+ Copy(reference_data_[1], source_data_[0]);
+ Blur(reference_data_[1], reference_stride_, 3);
+
+ double inconsistency = CheckConsistency(1);
+ inconsistency = CheckConsistency(0);
+ EXPECT_EQ(inconsistency, 0.0)
+ << "Should have 0 inconsistency if they are exactly the same.";
+
+ // If sources are not consistent reference frames inconsistency should
+ // be less than if the source is consistent.
+ FillRandom(source_data_[0], source_stride_);
+ FillRandom(source_data_[1], source_stride_);
+ FillRandom(reference_data_[0], reference_stride_);
+ FillRandom(reference_data_[1], reference_stride_);
+ CheckConsistency(0);
+ inconsistency = CheckConsistency(1);
+
+ Copy(source_data_[1], source_data_[0]);
+ CheckConsistency(0);
+ double inconsistency2 = CheckConsistency(1);
+ EXPECT_LT(inconsistency, inconsistency2)
+ << "Should have less inconsistency if source itself is inconsistent.";
+
+ // Less of a blur should be less inconsistent than more blur coming off a
+ // a frame with no blur.
+ ClearSsim();
+ FillRandom(source_data_[0], source_stride_);
+ Copy(source_data_[1], source_data_[0]);
+ Copy(reference_data_[0], source_data_[0]);
+ Copy(reference_data_[1], source_data_[0]);
+ Blur(reference_data_[1], reference_stride_, 4);
+ CheckConsistency(0);
+ inconsistency = CheckConsistency(1);
+ ClearSsim();
+ Copy(reference_data_[1], source_data_[0]);
+ Blur(reference_data_[1], reference_stride_, 8);
+ CheckConsistency(0);
+ inconsistency2 = CheckConsistency(1);
+
+ EXPECT_LT(inconsistency, inconsistency2)
+ << "Stronger Blur should produce more inconsistency.";
+}
+#endif // CONFIG_VP9_ENCODER
+
+using std::make_tuple;
+
+//------------------------------------------------------------------------------
+// C functions
+
+#if CONFIG_VP9_ENCODER
+const ConsistencyParam c_vp9_tests[] = { make_tuple(320, 240),
+ make_tuple(318, 242),
+ make_tuple(318, 238) };
+INSTANTIATE_TEST_SUITE_P(C, ConsistencyVP9Test,
+ ::testing::ValuesIn(c_vp9_tests));
+#endif
+
+} // namespace