98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
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/*
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* Copyright (c) 2011 The WebRTC 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 "video_metrics.h"
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#include <cstdio>
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#include "gtest/gtest.h"
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#include "testsupport/fileutils.h"
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namespace webrtc {
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static const char* kEmptyFileName = "video_metrics_unittest_empty_file.tmp";
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static const char* kNonExistingFileName = "video_metrics_unittest_non_existing";
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static const int kWidth = 352;
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static const int kHeight = 288;
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static const int kMissingReferenceFileReturnCode = -1;
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static const int kMissingTestFileReturnCode = -2;
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static const int kEmptyFileReturnCode = -3;
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static const double kPsnrPerfectResult = std::numeric_limits<double>::max();
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static const double kSsimPerfectResult = 1.0;
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class VideoMetricsTest: public testing::Test {
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protected:
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VideoMetricsTest() {
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video_file = webrtc::test::ProjectRootPath() + "resources/foreman_cif.yuv";
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}
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virtual ~VideoMetricsTest() {}
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void SetUp() {
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// Create an empty file:
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FILE* dummy = fopen(kEmptyFileName, "wb");
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fclose(dummy);
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}
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void TearDown() {
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std::remove(kEmptyFileName);
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}
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QualityMetricsResult result_;
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std::string video_file;
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};
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// Tests that it is possible to run with the same reference as test file
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TEST_F(VideoMetricsTest, ReturnsPerfectResultForIdenticalFiles) {
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EXPECT_EQ(0, PsnrFromFiles(video_file.c_str(), video_file.c_str(),
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kWidth, kHeight, &result_));
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EXPECT_EQ(kPsnrPerfectResult, result_.average);
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EXPECT_EQ(SsimFromFiles(video_file.c_str(), video_file.c_str(), kWidth, kHeight,
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&result_), 0);
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EXPECT_EQ(kSsimPerfectResult, result_.average);
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}
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// Tests that the right return code is given when the reference file is missing.
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TEST_F(VideoMetricsTest, MissingReferenceFile) {
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EXPECT_EQ(kMissingReferenceFileReturnCode,
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PsnrFromFiles(kNonExistingFileName, video_file.c_str(), kWidth,
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kHeight, &result_));
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EXPECT_EQ(kMissingReferenceFileReturnCode,
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SsimFromFiles(kNonExistingFileName, video_file.c_str(), kWidth,
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kHeight, &result_));
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}
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// Tests that the right return code is given when the test file is missing.
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TEST_F(VideoMetricsTest, MissingTestFile) {
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EXPECT_EQ(kMissingTestFileReturnCode,
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PsnrFromFiles(video_file.c_str(), kNonExistingFileName, kWidth,
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kHeight, &result_));
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EXPECT_EQ(kMissingTestFileReturnCode,
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SsimFromFiles(video_file.c_str(), kNonExistingFileName, kWidth,
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kHeight, &result_));
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}
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// Tests that the method can be executed with empty files.
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TEST_F(VideoMetricsTest, EmptyFiles) {
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EXPECT_EQ(kEmptyFileReturnCode,
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PsnrFromFiles(kEmptyFileName, video_file.c_str(), kWidth, kHeight,
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&result_));
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EXPECT_EQ(kEmptyFileReturnCode,
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SsimFromFiles(kEmptyFileName, video_file.c_str(), kWidth, kHeight,
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&result_));
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// Run the same again with the empty file switched.
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EXPECT_EQ(kEmptyFileReturnCode,
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PsnrFromFiles(video_file.c_str(), kEmptyFileName, kWidth, kHeight,
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&result_));
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EXPECT_EQ(kEmptyFileReturnCode,
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SsimFromFiles(video_file.c_str(), kEmptyFileName, kWidth, kHeight,
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&result_));
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}
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} // namespace webrtc
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