media/cast/video_sender/video_sender_unittest.cc

   1 // Copyright 2013 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/scoped_ptr.h"
   9 #include "base/test/simple_test_tick_clock.h"
  10 #include "media/base/video_frame.h"
  11 #include "media/cast/cast_environment.h"
  12 #include "media/cast/test/fake_gpu_video_accelerator_factories.h"
  13 #include "media/cast/test/fake_task_runner.h"
  14 #include "media/cast/test/video_utility.h"
  15 #include "media/cast/transport/pacing/mock_paced_packet_sender.h"
  16 #include "media/cast/transport/pacing/paced_sender.h"
  17 #include "media/cast/video_sender/video_sender.h"
  18 #include "testing/gmock/include/gmock/gmock.h"
  19 #include "testing/gtest/include/gtest/gtest.h"
  20
  21 namespace media {
  22 namespace cast {
  23
  24 namespace {
  25 static const int64 kStartMillisecond = GG_INT64_C(12345678900000);
  26 static const uint8 kPixelValue = 123;
  27 static const int kWidth = 320;
  28 static const int kHeight = 240;
  29 }
  30
  31 using testing::_;
  32 using testing::AtLeast;
  33
  34 namespace {
  35 class PeerVideoSender : public VideoSender {
  36  public:
  37   PeerVideoSender(
  38       scoped_refptr<CastEnvironment> cast_environment,
  39       const VideoSenderConfig& video_config,
  40       const scoped_refptr<GpuVideoAcceleratorFactories>& gpu_factories,
  41       transport::PacedPacketSender* const paced_packet_sender)
  42       : VideoSender(cast_environment, video_config, gpu_factories,
  43                     paced_packet_sender) {
  44   }
  45   using VideoSender::OnReceivedCastFeedback;
  46 };
  47 }  // namespace
  48
  49 class VideoSenderTest : public ::testing::Test {
  50  protected:
  51   VideoSenderTest() {
  52     testing_clock_.Advance(
  53         base::TimeDelta::FromMilliseconds(kStartMillisecond));
  54   }
  55
  56   virtual ~VideoSenderTest() {}
  57
  58   void InitEncoder(bool external) {
  59     VideoSenderConfig video_config;
  60     video_config.sender_ssrc = 1;
  61     video_config.incoming_feedback_ssrc = 2;
  62     video_config.rtp_payload_type = 127;
  63     video_config.use_external_encoder = external;
  64     video_config.width = kWidth;
  65     video_config.height = kHeight;
  66     video_config.max_bitrate = 5000000;
  67     video_config.min_bitrate = 1000000;
  68     video_config.start_bitrate = 1000000;
  69     video_config.max_qp = 56;
  70     video_config.min_qp = 0;
  71     video_config.max_frame_rate = 30;
  72     video_config.max_number_of_video_buffers_used = 1;
  73     video_config.codec = transport::kVp8;
  74
  75     if (external) {
  76       video_sender_.reset(new PeerVideoSender(cast_environment_,
  77           video_config,
  78           new test::FakeGpuVideoAcceleratorFactories(task_runner_),
  79           &mock_transport_));
  80     } else {
  81       video_sender_.reset(new PeerVideoSender(cast_environment_, video_config,
  82                                               NULL, &mock_transport_));
  83     }
  84   }
  85
  86   virtual void SetUp() {
  87     task_runner_ = new test::FakeTaskRunner(&testing_clock_);
  88     cast_environment_ = new CastEnvironment(&testing_clock_, task_runner_,
  89         task_runner_, task_runner_, task_runner_, task_runner_,
  90         task_runner_, GetDefaultCastLoggingConfig());
  91   }
  92
  93   scoped_refptr<media::VideoFrame> GetNewVideoFrame() {
  94     gfx::Size size(kWidth, kHeight);
  95     scoped_refptr<media::VideoFrame> video_frame =
  96         media::VideoFrame::CreateFrame(VideoFrame::I420, size, gfx::Rect(size),
  97                                        size, base::TimeDelta());
  98     PopulateVideoFrame(video_frame, kPixelValue);
  99     return video_frame;
 100   }
 101
 102   base::SimpleTestTickClock testing_clock_;
 103   transport::MockPacedPacketSender mock_transport_;
 104   scoped_refptr<test::FakeTaskRunner> task_runner_;
 105   scoped_ptr<PeerVideoSender> video_sender_;
 106   scoped_refptr<CastEnvironment> cast_environment_;
 107 };
 108
 109 TEST_F(VideoSenderTest, BuiltInEncoder) {
 110   EXPECT_CALL(mock_transport_, SendPackets(_)).Times(1);
 111
 112   InitEncoder(false);
 113   scoped_refptr<media::VideoFrame> video_frame = GetNewVideoFrame();
 114
 115   base::TimeTicks capture_time;
 116   video_sender_->InsertRawVideoFrame(video_frame, capture_time);
 117
 118   task_runner_->RunTasks();
 119 }
 120
 121 TEST_F(VideoSenderTest, ExternalEncoder) {
 122   EXPECT_CALL(mock_transport_, SendPackets(_)).Times(1);
 123   InitEncoder(true);
 124   task_runner_->RunTasks();
 125
 126   scoped_refptr<media::VideoFrame> video_frame = GetNewVideoFrame();
 127
 128   base::TimeTicks capture_time;
 129   video_sender_->InsertRawVideoFrame(video_frame, capture_time);
 130
 131   task_runner_->RunTasks();
 132
 133   // We need to run the task to cleanup the GPU instance.
 134   video_sender_.reset(NULL);
 135   task_runner_->RunTasks();
 136 }
 137
 138 TEST_F(VideoSenderTest, RtcpTimer) {
 139   EXPECT_CALL(mock_transport_, SendPackets(_)).Times(AtLeast(1));
 140   EXPECT_CALL(mock_transport_, SendRtcpPacket(_)).Times(1);
 141   InitEncoder(false);
 142
 143   scoped_refptr<media::VideoFrame> video_frame = GetNewVideoFrame();
 144
 145   base::TimeTicks capture_time;
 146   video_sender_->InsertRawVideoFrame(video_frame, capture_time);
 147   task_runner_->RunTasks();
 148
 149   // Make sure that we send at least one RTCP packet.
 150   base::TimeDelta max_rtcp_timeout =
 151       base::TimeDelta::FromMilliseconds(1 + kDefaultRtcpIntervalMs * 3 / 2);
 152
 153   testing_clock_.Advance(max_rtcp_timeout);
 154   task_runner_->RunTasks();
 155 }
 156
 157 TEST_F(VideoSenderTest, ResendTimer) {
 158   EXPECT_CALL(mock_transport_, SendPackets(_)).Times(2);
 159   EXPECT_CALL(mock_transport_, ResendPackets(_)).Times(1);
 160
 161   InitEncoder(false);
 162
 163   scoped_refptr<media::VideoFrame> video_frame = GetNewVideoFrame();
 164
 165   base::TimeTicks capture_time;
 166   video_sender_->InsertRawVideoFrame(video_frame, capture_time);
 167
 168   task_runner_->RunTasks();
 169
 170   // ACK the key frame.
 171   RtcpCastMessage cast_feedback(1);
 172   cast_feedback.media_ssrc_ = 2;
 173   cast_feedback.ack_frame_id_ = 0;
 174   video_sender_->OnReceivedCastFeedback(cast_feedback);
 175
 176   video_frame = GetNewVideoFrame();
 177   video_sender_->InsertRawVideoFrame(video_frame, capture_time);
 178
 179   task_runner_->RunTasks();
 180
 181   base::TimeDelta max_resend_timeout =
 182       base::TimeDelta::FromMilliseconds(1 + kDefaultRtpMaxDelayMs);
 183
 184   // Make sure that we do a re-send.
 185   testing_clock_.Advance(max_resend_timeout);
 186   task_runner_->RunTasks();
 187 }
 188
 189 }  // namespace cast
 190 }  // namespace media
 191