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bb547203bf
In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/*
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* Copyright (c) 2016 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 "webrtc/modules/video_coding/histogram.h"
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#include "webrtc/test/gtest.h"
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namespace webrtc {
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namespace video_coding {
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class TestHistogram : public ::testing::Test {
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protected:
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TestHistogram() : histogram_(5, 10) {}
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Histogram histogram_;
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};
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TEST_F(TestHistogram, NumValues) {
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EXPECT_EQ(0ul, histogram_.NumValues());
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histogram_.Add(0);
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EXPECT_EQ(1ul, histogram_.NumValues());
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}
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TEST_F(TestHistogram, InverseCdf) {
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histogram_.Add(0);
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histogram_.Add(1);
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histogram_.Add(2);
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histogram_.Add(3);
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histogram_.Add(4);
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EXPECT_EQ(5ul, histogram_.NumValues());
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EXPECT_EQ(1ul, histogram_.InverseCdf(0.2f));
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EXPECT_EQ(2ul, histogram_.InverseCdf(0.2000001f));
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EXPECT_EQ(4ul, histogram_.InverseCdf(0.8f));
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histogram_.Add(0);
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EXPECT_EQ(6ul, histogram_.NumValues());
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EXPECT_EQ(1ul, histogram_.InverseCdf(0.2f));
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EXPECT_EQ(1ul, histogram_.InverseCdf(0.2000001f));
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}
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TEST_F(TestHistogram, ReplaceOldValues) {
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histogram_.Add(0);
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histogram_.Add(0);
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histogram_.Add(0);
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histogram_.Add(0);
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histogram_.Add(0);
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histogram_.Add(1);
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histogram_.Add(1);
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histogram_.Add(1);
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histogram_.Add(1);
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histogram_.Add(1);
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EXPECT_EQ(10ul, histogram_.NumValues());
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EXPECT_EQ(1ul, histogram_.InverseCdf(0.5f));
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EXPECT_EQ(2ul, histogram_.InverseCdf(0.5000001f));
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histogram_.Add(4);
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histogram_.Add(4);
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histogram_.Add(4);
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histogram_.Add(4);
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EXPECT_EQ(10ul, histogram_.NumValues());
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EXPECT_EQ(1ul, histogram_.InverseCdf(0.1f));
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EXPECT_EQ(2ul, histogram_.InverseCdf(0.5f));
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histogram_.Add(20);
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EXPECT_EQ(10ul, histogram_.NumValues());
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EXPECT_EQ(2ul, histogram_.InverseCdf(0.5f));
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EXPECT_EQ(5ul, histogram_.InverseCdf(0.5000001f));
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}
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} // namespace video_coding
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} // namespace webrtc
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