1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "remoting/codec/video_decoder_vp8.h"
6
7#include "media/base/video_frame.h"
8#include "remoting/codec/codec_test.h"
9#include "remoting/codec/video_encoder_vp8.h"
10#include "testing/gtest/include/gtest/gtest.h"
11#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
12
13namespace remoting {
14
15class VideoDecoderVp8Test : public testing::Test {
16 protected:
17  VideoEncoderVp8 encoder_;
18  VideoDecoderVp8 decoder_;
19
20  void TestGradient(int screen_width, int screen_height,
21                    int view_width, int view_height,
22                    double max_error_limit, double mean_error_limit) {
23    TestVideoEncoderDecoderGradient(
24        &encoder_, &decoder_,
25        webrtc::DesktopSize(screen_width, screen_height),
26        webrtc::DesktopSize(view_width, view_height),
27        max_error_limit, mean_error_limit);
28  }
29};
30
31TEST_F(VideoDecoderVp8Test, VideoEncodeAndDecode) {
32  TestVideoEncoderDecoder(&encoder_, &decoder_, false);
33}
34
35// Check that encoding and decoding a particular frame doesn't change the
36// frame too much. The frame used is a gradient, which does not contain sharp
37// transitions, so encoding lossiness should not be too high.
38TEST_F(VideoDecoderVp8Test, Gradient) {
39  TestGradient(320, 240, 320, 240, 0.04, 0.02);
40}
41
42TEST_F(VideoDecoderVp8Test, GradientScaleUpEvenToEven) {
43  TestGradient(320, 240, 640, 480, 0.04, 0.02);
44}
45
46TEST_F(VideoDecoderVp8Test, GradientScaleUpEvenToOdd) {
47  TestGradient(320, 240, 641, 481, 0.04, 0.02);
48}
49
50TEST_F(VideoDecoderVp8Test, GradientScaleUpOddToEven) {
51  TestGradient(321, 241, 640, 480, 0.04, 0.02);
52}
53
54TEST_F(VideoDecoderVp8Test, GradientScaleUpOddToOdd) {
55  TestGradient(321, 241, 641, 481, 0.04, 0.02);
56}
57
58TEST_F(VideoDecoderVp8Test, GradientScaleDownEvenToEven) {
59  TestGradient(320, 240, 160, 120, 0.04, 0.02);
60}
61
62TEST_F(VideoDecoderVp8Test, GradientScaleDownEvenToOdd) {
63  // The maximum error is non-deterministic. The mean error is not too high,
64  // which suggests that the problem is restricted to a small area of the output
65  // image. See crbug.com/139437 and crbug.com/139633.
66  TestGradient(320, 240, 161, 121, 1.0, 0.02);
67}
68
69TEST_F(VideoDecoderVp8Test, GradientScaleDownOddToEven) {
70  TestGradient(321, 241, 160, 120, 0.04, 0.02);
71}
72
73TEST_F(VideoDecoderVp8Test, GradientScaleDownOddToOdd) {
74  TestGradient(321, 241, 161, 121, 0.04, 0.02);
75}
76
77}  // namespace remoting
78