remoting/codec/video_decoder_vp8_unittest.cc

   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
  13 namespace remoting {
  14
  15 class 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
  31 TEST_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.
  38 TEST_F(VideoDecoderVp8Test, Gradient) {
  39   TestGradient(320, 240, 320, 240, 0.04, 0.02);
  40 }
  41
  42 TEST_F(VideoDecoderVp8Test, GradientScaleUpEvenToEven) {
  43   TestGradient(320, 240, 640, 480, 0.04, 0.02);
  44 }
  45
  46 TEST_F(VideoDecoderVp8Test, GradientScaleUpEvenToOdd) {
  47   TestGradient(320, 240, 641, 481, 0.04, 0.02);
  48 }
  49
  50 TEST_F(VideoDecoderVp8Test, GradientScaleUpOddToEven) {
  51   TestGradient(321, 241, 640, 480, 0.04, 0.02);
  52 }
  53
  54 TEST_F(VideoDecoderVp8Test, GradientScaleUpOddToOdd) {
  55   TestGradient(321, 241, 641, 481, 0.04, 0.02);
  56 }
  57
  58 TEST_F(VideoDecoderVp8Test, GradientScaleDownEvenToEven) {
  59   TestGradient(320, 240, 160, 120, 0.04, 0.02);
  60 }
  61
  62 TEST_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
  69 TEST_F(VideoDecoderVp8Test, GradientScaleDownOddToEven) {
  70   TestGradient(321, 241, 160, 120, 0.04, 0.02);
  71 }
  72
  73 TEST_F(VideoDecoderVp8Test, GradientScaleDownOddToOdd) {
  74   TestGradient(321, 241, 161, 121, 0.04, 0.02);
  75 }
  76
  77 }  // namespace remoting