src/media/cast/sender/video_encoder_impl_unittest.cc

   1 // Copyright 2014 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 <vector>
   6
   7 #include "base/bind.h"
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "media/base/video_frame.h"
  11 #include "media/cast/cast_defines.h"
  12 #include "media/cast/cast_environment.h"
  13 #include "media/cast/sender/video_encoder_impl.h"
  14 #include "media/cast/test/fake_single_thread_task_runner.h"
  15 #include "media/cast/test/utility/default_config.h"
  16 #include "media/cast/test/utility/video_utility.h"
  17 #include "testing/gmock/include/gmock/gmock.h"
  18
  19 namespace media {
  20 namespace cast {
  21
  22 using testing::_;
  23
  24 namespace {
  25 class TestVideoEncoderCallback
  26     : public base::RefCountedThreadSafe<TestVideoEncoderCallback> {
  27  public:
  28   explicit TestVideoEncoderCallback(bool multiple_buffer_mode)
  29       : multiple_buffer_mode_(multiple_buffer_mode),
  30         count_frames_delivered_(0) {}
  31
  32   int count_frames_delivered() const {
  33     return count_frames_delivered_;
  34   }
  35
  36   void SetExpectedResult(uint32 expected_frame_id,
  37                          uint32 expected_last_referenced_frame_id,
  38                          const base::TimeTicks& expected_capture_time) {
  39     expected_frame_id_ = expected_frame_id;
  40     expected_last_referenced_frame_id_ = expected_last_referenced_frame_id;
  41     expected_capture_time_ = expected_capture_time;
  42   }
  43
  44   void DeliverEncodedVideoFrame(
  45       scoped_ptr<EncodedFrame> encoded_frame) {
  46     if (expected_frame_id_ != expected_last_referenced_frame_id_) {
  47       EXPECT_EQ(EncodedFrame::DEPENDENT, encoded_frame->dependency);
  48     } else if (!multiple_buffer_mode_) {
  49       EXPECT_EQ(EncodedFrame::KEY, encoded_frame->dependency);
  50     }
  51     EXPECT_EQ(expected_frame_id_, encoded_frame->frame_id);
  52     EXPECT_EQ(expected_last_referenced_frame_id_,
  53               encoded_frame->referenced_frame_id)
  54         << "frame id: " << expected_frame_id_;
  55     EXPECT_LT(0u, encoded_frame->rtp_timestamp);
  56     EXPECT_EQ(expected_capture_time_, encoded_frame->reference_time);
  57     EXPECT_FALSE(encoded_frame->data.empty());
  58     ++count_frames_delivered_;
  59   }
  60
  61  private:
  62   friend class base::RefCountedThreadSafe<TestVideoEncoderCallback>;
  63   virtual ~TestVideoEncoderCallback() {}
  64
  65   const bool multiple_buffer_mode_;
  66   int count_frames_delivered_;
  67
  68   uint32 expected_frame_id_;
  69   uint32 expected_last_referenced_frame_id_;
  70   base::TimeTicks expected_capture_time_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(TestVideoEncoderCallback);
  73 };
  74 }  // namespace
  75
  76 class VideoEncoderImplTest : public ::testing::Test {
  77  protected:
  78   VideoEncoderImplTest() {
  79     video_config_ = GetDefaultVideoSenderConfig();
  80     video_config_.codec = CODEC_VIDEO_VP8;
  81     gfx::Size size(video_config_.width, video_config_.height);
  82     video_frame_ = media::VideoFrame::CreateFrame(
  83         VideoFrame::I420, size, gfx::Rect(size), size, base::TimeDelta());
  84     PopulateVideoFrame(video_frame_.get(), 123);
  85   }
  86
  87   virtual ~VideoEncoderImplTest() {}
  88
  89   virtual void SetUp() OVERRIDE {
  90     testing_clock_ = new base::SimpleTestTickClock();
  91     testing_clock_->Advance(base::TimeTicks::Now() - base::TimeTicks());
  92     task_runner_ = new test::FakeSingleThreadTaskRunner(testing_clock_);
  93     cast_environment_ =
  94         new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_).Pass(),
  95                             task_runner_,
  96                             task_runner_,
  97                             task_runner_);
  98   }
  99
 100   virtual void TearDown() OVERRIDE {
 101     video_encoder_.reset();
 102     task_runner_->RunTasks();
 103   }
 104
 105   void CreateEncoder() {
 106     test_video_encoder_callback_ = new TestVideoEncoderCallback(
 107         video_config_.max_number_of_video_buffers_used != 1);
 108     video_encoder_.reset(new VideoEncoderImpl(
 109         cast_environment_, video_config_,
 110         0 /* useless arg to be removed in later change */));
 111   }
 112
 113   base::SimpleTestTickClock* testing_clock_;  // Owned by CastEnvironment.
 114   scoped_refptr<TestVideoEncoderCallback> test_video_encoder_callback_;
 115   VideoSenderConfig video_config_;
 116   scoped_refptr<test::FakeSingleThreadTaskRunner> task_runner_;
 117   scoped_ptr<VideoEncoder> video_encoder_;
 118   scoped_refptr<media::VideoFrame> video_frame_;
 119
 120   scoped_refptr<CastEnvironment> cast_environment_;
 121
 122   DISALLOW_COPY_AND_ASSIGN(VideoEncoderImplTest);
 123 };
 124
 125 TEST_F(VideoEncoderImplTest, GeneratesKeyFrameThenOnlyDeltaFrames) {
 126   CreateEncoder();
 127
 128   VideoEncoder::FrameEncodedCallback frame_encoded_callback =
 129       base::Bind(&TestVideoEncoderCallback::DeliverEncodedVideoFrame,
 130                  test_video_encoder_callback_.get());
 131
 132   EXPECT_EQ(0, test_video_encoder_callback_->count_frames_delivered());
 133
 134   test_video_encoder_callback_->SetExpectedResult(
 135       0, 0, testing_clock_->NowTicks());
 136   EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
 137       video_frame_, testing_clock_->NowTicks(), frame_encoded_callback));
 138   task_runner_->RunTasks();
 139
 140   for (uint32 frame_id = 1; frame_id < 10; ++frame_id) {
 141     testing_clock_->Advance(base::TimeDelta::FromMilliseconds(33));
 142     test_video_encoder_callback_->SetExpectedResult(
 143         frame_id, frame_id - 1, testing_clock_->NowTicks());
 144     EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
 145         video_frame_, testing_clock_->NowTicks(), frame_encoded_callback));
 146     task_runner_->RunTasks();
 147   }
 148
 149   EXPECT_EQ(10, test_video_encoder_callback_->count_frames_delivered());
 150 }
 151
 152 TEST_F(VideoEncoderImplTest,
 153        FramesDoNotDependOnUnackedFramesInMultiBufferMode) {
 154   video_config_.max_number_of_video_buffers_used = 3;
 155   CreateEncoder();
 156
 157   VideoEncoder::FrameEncodedCallback frame_encoded_callback =
 158       base::Bind(&TestVideoEncoderCallback::DeliverEncodedVideoFrame,
 159                  test_video_encoder_callback_.get());
 160
 161   EXPECT_EQ(0, test_video_encoder_callback_->count_frames_delivered());
 162
 163   test_video_encoder_callback_->SetExpectedResult(
 164       0, 0, testing_clock_->NowTicks());
 165   EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
 166       video_frame_, testing_clock_->NowTicks(), frame_encoded_callback));
 167   task_runner_->RunTasks();
 168
 169   testing_clock_->Advance(base::TimeDelta::FromMilliseconds(33));
 170   video_encoder_->LatestFrameIdToReference(0);
 171   test_video_encoder_callback_->SetExpectedResult(
 172       1, 0, testing_clock_->NowTicks());
 173   EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
 174       video_frame_, testing_clock_->NowTicks(), frame_encoded_callback));
 175   task_runner_->RunTasks();
 176
 177   testing_clock_->Advance(base::TimeDelta::FromMilliseconds(33));
 178   video_encoder_->LatestFrameIdToReference(1);
 179   test_video_encoder_callback_->SetExpectedResult(
 180       2, 1, testing_clock_->NowTicks());
 181   EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
 182       video_frame_, testing_clock_->NowTicks(), frame_encoded_callback));
 183   task_runner_->RunTasks();
 184
 185   video_encoder_->LatestFrameIdToReference(2);
 186
 187   for (uint32 frame_id = 3; frame_id < 10; ++frame_id) {
 188     testing_clock_->Advance(base::TimeDelta::FromMilliseconds(33));
 189     test_video_encoder_callback_->SetExpectedResult(
 190         frame_id, 2, testing_clock_->NowTicks());
 191     EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
 192         video_frame_, testing_clock_->NowTicks(), frame_encoded_callback));
 193     task_runner_->RunTasks();
 194   }
 195
 196   EXPECT_EQ(10, test_video_encoder_callback_->count_frames_delivered());
 197 }
 198
 199 }  // namespace cast
 200 }  // namespace media