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| 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 <deque> | |
| 6 #include <utility> | |
| 7 | |
| 8 #include "base/bind.h" | |
| 9 #include "base/memory/ref_counted.h" | |
| 10 #include "base/memory/scoped_ptr.h" | |
| 11 #include "base/test/simple_test_tick_clock.h" | |
| 12 #include "media/cast/cast_defines.h" | |
| 13 #include "media/cast/cast_environment.h" | |
| 14 #include "media/cast/logging/simple_event_subscriber.h" | |
| 15 #include "media/cast/rtcp/test_rtcp_packet_builder.h" | |
| 16 #include "media/cast/test/fake_single_thread_task_runner.h" | |
| 17 #include "media/cast/test/utility/default_config.h" | |
| 18 #include "media/cast/transport/pacing/mock_paced_packet_sender.h" | |
| 19 #include "media/cast/video_receiver/video_receiver.h" | |
| 20 #include "testing/gmock/include/gmock/gmock.h" | |
| 21 | |
| 22 using ::testing::_; | |
| 23 | |
| 24 namespace media { | |
| 25 namespace cast { | |
| 26 | |
| 27 namespace { | |
| 28 | |
| 29 const int kPacketSize = 1500; | |
| 30 const uint32 kFirstFrameId = 1234; | |
| 31 const int kPlayoutDelayMillis = 100; | |
| 32 | |
| 33 class FakeVideoClient { | |
| 34 public: | |
| 35 FakeVideoClient() : num_called_(0) {} | |
| 36 virtual ~FakeVideoClient() {} | |
| 37 | |
| 38 void AddExpectedResult(uint32 expected_frame_id, | |
| 39 const base::TimeTicks& expected_playout_time) { | |
| 40 expected_results_.push_back( | |
| 41 std::make_pair(expected_frame_id, expected_playout_time)); | |
| 42 } | |
| 43 | |
| 44 void DeliverEncodedVideoFrame( | |
| 45 scoped_ptr<transport::EncodedFrame> video_frame) { | |
| 46 SCOPED_TRACE(::testing::Message() << "num_called_ is " << num_called_); | |
| 47 ASSERT_FALSE(!video_frame) | |
| 48 << "If at shutdown: There were unsatisfied requests enqueued."; | |
| 49 ASSERT_FALSE(expected_results_.empty()); | |
| 50 EXPECT_EQ(expected_results_.front().first, video_frame->frame_id); | |
| 51 EXPECT_EQ(expected_results_.front().second, video_frame->reference_time); | |
| 52 expected_results_.pop_front(); | |
| 53 ++num_called_; | |
| 54 } | |
| 55 | |
| 56 int number_times_called() const { return num_called_; } | |
| 57 | |
| 58 private: | |
| 59 std::deque<std::pair<uint32, base::TimeTicks> > expected_results_; | |
| 60 int num_called_; | |
| 61 | |
| 62 DISALLOW_COPY_AND_ASSIGN(FakeVideoClient); | |
| 63 }; | |
| 64 } // namespace | |
| 65 | |
| 66 class VideoReceiverTest : public ::testing::Test { | |
| 67 protected: | |
| 68 VideoReceiverTest() { | |
| 69 config_ = GetDefaultVideoReceiverConfig(); | |
| 70 config_.rtp_max_delay_ms = kPlayoutDelayMillis; | |
| 71 // Note: Frame rate must divide 1000 without remainder so the test code | |
| 72 // doesn't have to account for rounding errors. | |
| 73 config_.max_frame_rate = 25; | |
| 74 config_.codec.video = transport::kVp8; // Frame skipping not allowed. | |
| 75 testing_clock_ = new base::SimpleTestTickClock(); | |
| 76 testing_clock_->Advance(base::TimeTicks::Now() - base::TimeTicks()); | |
| 77 start_time_ = testing_clock_->NowTicks(); | |
| 78 task_runner_ = new test::FakeSingleThreadTaskRunner(testing_clock_); | |
| 79 | |
| 80 cast_environment_ = | |
| 81 new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_).Pass(), | |
| 82 task_runner_, | |
| 83 task_runner_, | |
| 84 task_runner_); | |
| 85 | |
| 86 receiver_.reset(new VideoReceiver( | |
| 87 cast_environment_, config_, &mock_transport_)); | |
| 88 } | |
| 89 | |
| 90 virtual ~VideoReceiverTest() {} | |
| 91 | |
| 92 virtual void SetUp() { | |
| 93 payload_.assign(kPacketSize, 0); | |
| 94 | |
| 95 // Always start with a key frame. | |
| 96 rtp_header_.is_key_frame = true; | |
| 97 rtp_header_.frame_id = kFirstFrameId; | |
| 98 rtp_header_.reference_frame_id = rtp_header_.frame_id; | |
| 99 rtp_header_.packet_id = 0; | |
| 100 rtp_header_.max_packet_id = 0; | |
| 101 } | |
| 102 | |
| 103 void FeedOneFrameIntoReceiver() { | |
| 104 receiver_->OnReceivedPayloadData( | |
| 105 payload_.data(), payload_.size(), rtp_header_); | |
| 106 } | |
| 107 | |
| 108 void FeedLipSyncInfoIntoReceiver() { | |
| 109 const base::TimeTicks now = testing_clock_->NowTicks(); | |
| 110 const int64 rtp_timestamp = (now - start_time_) * | |
| 111 kVideoFrequency / base::TimeDelta::FromSeconds(1); | |
| 112 CHECK_LE(0, rtp_timestamp); | |
| 113 uint32 ntp_seconds; | |
| 114 uint32 ntp_fraction; | |
| 115 ConvertTimeTicksToNtp(now, &ntp_seconds, &ntp_fraction); | |
| 116 TestRtcpPacketBuilder rtcp_packet; | |
| 117 rtcp_packet.AddSrWithNtp(config_.incoming_ssrc, | |
| 118 ntp_seconds, ntp_fraction, | |
| 119 static_cast<uint32>(rtp_timestamp)); | |
| 120 receiver_->IncomingPacket(rtcp_packet.GetPacket().Pass()); | |
| 121 } | |
| 122 | |
| 123 FrameReceiverConfig config_; | |
| 124 std::vector<uint8> payload_; | |
| 125 RtpCastHeader rtp_header_; | |
| 126 base::SimpleTestTickClock* testing_clock_; // Owned by CastEnvironment. | |
| 127 base::TimeTicks start_time_; | |
| 128 transport::MockPacedPacketSender mock_transport_; | |
| 129 scoped_refptr<test::FakeSingleThreadTaskRunner> task_runner_; | |
| 130 scoped_refptr<CastEnvironment> cast_environment_; | |
| 131 FakeVideoClient fake_video_client_; | |
| 132 | |
| 133 // Important for the VideoReceiver to be declared last, since its dependencies | |
| 134 // must remain alive until after its destruction. | |
| 135 scoped_ptr<VideoReceiver> receiver_; | |
| 136 | |
| 137 DISALLOW_COPY_AND_ASSIGN(VideoReceiverTest); | |
| 138 }; | |
| 139 | |
| 140 TEST_F(VideoReceiverTest, ReceivesOneFrame) { | |
| 141 SimpleEventSubscriber event_subscriber; | |
| 142 cast_environment_->Logging()->AddRawEventSubscriber(&event_subscriber); | |
| 143 | |
| 144 EXPECT_CALL(mock_transport_, SendRtcpPacket(_, _)) | |
| 145 .WillRepeatedly(testing::Return(true)); | |
| 146 | |
| 147 FeedLipSyncInfoIntoReceiver(); | |
| 148 task_runner_->RunTasks(); | |
| 149 | |
| 150 // Enqueue a request for a video frame. | |
| 151 receiver_->GetEncodedVideoFrame( | |
| 152 base::Bind(&FakeVideoClient::DeliverEncodedVideoFrame, | |
| 153 base::Unretained(&fake_video_client_))); | |
| 154 | |
| 155 // The request should not be satisfied since no packets have been received. | |
| 156 task_runner_->RunTasks(); | |
| 157 EXPECT_EQ(0, fake_video_client_.number_times_called()); | |
| 158 | |
| 159 // Deliver one video frame to the receiver and expect to get one frame back. | |
| 160 const base::TimeDelta target_playout_delay = | |
| 161 base::TimeDelta::FromMilliseconds(kPlayoutDelayMillis); | |
| 162 fake_video_client_.AddExpectedResult( | |
| 163 kFirstFrameId, testing_clock_->NowTicks() + target_playout_delay); | |
| 164 FeedOneFrameIntoReceiver(); | |
| 165 task_runner_->RunTasks(); | |
| 166 EXPECT_EQ(1, fake_video_client_.number_times_called()); | |
| 167 | |
| 168 std::vector<FrameEvent> frame_events; | |
| 169 event_subscriber.GetFrameEventsAndReset(&frame_events); | |
| 170 | |
| 171 ASSERT_TRUE(!frame_events.empty()); | |
| 172 EXPECT_EQ(FRAME_ACK_SENT, frame_events.begin()->type); | |
| 173 EXPECT_EQ(rtp_header_.frame_id, frame_events.begin()->frame_id); | |
| 174 EXPECT_EQ(rtp_header_.rtp_timestamp, frame_events.begin()->rtp_timestamp); | |
| 175 | |
| 176 cast_environment_->Logging()->RemoveRawEventSubscriber(&event_subscriber); | |
| 177 } | |
| 178 | |
| 179 TEST_F(VideoReceiverTest, ReceivesFramesRefusingToSkipAny) { | |
| 180 EXPECT_CALL(mock_transport_, SendRtcpPacket(_, _)) | |
| 181 .WillRepeatedly(testing::Return(true)); | |
| 182 | |
| 183 const uint32 rtp_advance_per_frame = | |
| 184 config_.frequency / config_.max_frame_rate; | |
| 185 const base::TimeDelta time_advance_per_frame = | |
| 186 base::TimeDelta::FromSeconds(1) / config_.max_frame_rate; | |
| 187 | |
| 188 // Feed and process lip sync in receiver. | |
| 189 FeedLipSyncInfoIntoReceiver(); | |
| 190 task_runner_->RunTasks(); | |
| 191 const base::TimeTicks first_frame_capture_time = testing_clock_->NowTicks(); | |
| 192 | |
| 193 // Enqueue a request for a video frame. | |
| 194 const FrameEncodedCallback frame_encoded_callback = | |
| 195 base::Bind(&FakeVideoClient::DeliverEncodedVideoFrame, | |
| 196 base::Unretained(&fake_video_client_)); | |
| 197 receiver_->GetEncodedVideoFrame(frame_encoded_callback); | |
| 198 task_runner_->RunTasks(); | |
| 199 EXPECT_EQ(0, fake_video_client_.number_times_called()); | |
| 200 | |
| 201 // Receive one video frame and expect to see the first request satisfied. | |
| 202 const base::TimeDelta target_playout_delay = | |
| 203 base::TimeDelta::FromMilliseconds(kPlayoutDelayMillis); | |
| 204 fake_video_client_.AddExpectedResult( | |
| 205 kFirstFrameId, first_frame_capture_time + target_playout_delay); | |
| 206 rtp_header_.rtp_timestamp = 0; | |
| 207 FeedOneFrameIntoReceiver(); | |
| 208 task_runner_->RunTasks(); | |
| 209 EXPECT_EQ(1, fake_video_client_.number_times_called()); | |
| 210 | |
| 211 // Enqueue a second request for a video frame, but it should not be | |
| 212 // fulfilled yet. | |
| 213 receiver_->GetEncodedVideoFrame(frame_encoded_callback); | |
| 214 task_runner_->RunTasks(); | |
| 215 EXPECT_EQ(1, fake_video_client_.number_times_called()); | |
| 216 | |
| 217 // Receive one video frame out-of-order: Make sure that we are not continuous | |
| 218 // and that the RTP timestamp represents a time in the future. | |
| 219 rtp_header_.is_key_frame = false; | |
| 220 rtp_header_.frame_id = kFirstFrameId + 2; // "Frame 3" | |
| 221 rtp_header_.reference_frame_id = kFirstFrameId + 1; // "Frame 2" | |
| 222 rtp_header_.rtp_timestamp += 2 * rtp_advance_per_frame; | |
| 223 FeedOneFrameIntoReceiver(); | |
| 224 | |
| 225 // Frame 2 should not come out at this point in time. | |
| 226 task_runner_->RunTasks(); | |
| 227 EXPECT_EQ(1, fake_video_client_.number_times_called()); | |
| 228 | |
| 229 // Enqueue a third request for a video frame. | |
| 230 receiver_->GetEncodedVideoFrame(frame_encoded_callback); | |
| 231 task_runner_->RunTasks(); | |
| 232 EXPECT_EQ(1, fake_video_client_.number_times_called()); | |
| 233 | |
| 234 // Now, advance time forward such that Frame 2 is now too late for playback. | |
| 235 // Regardless, the receiver must NOT emit Frame 3 yet because it is not | |
| 236 // allowed to skip frames for VP8. | |
| 237 testing_clock_->Advance(2 * time_advance_per_frame + target_playout_delay); | |
| 238 task_runner_->RunTasks(); | |
| 239 EXPECT_EQ(1, fake_video_client_.number_times_called()); | |
| 240 | |
| 241 // Now receive Frame 2 and expect both the second and third requests to be | |
| 242 // fulfilled immediately. | |
| 243 fake_video_client_.AddExpectedResult( | |
| 244 kFirstFrameId + 1, // "Frame 2" | |
| 245 first_frame_capture_time + 1 * time_advance_per_frame + | |
| 246 target_playout_delay); | |
| 247 fake_video_client_.AddExpectedResult( | |
| 248 kFirstFrameId + 2, // "Frame 3" | |
| 249 first_frame_capture_time + 2 * time_advance_per_frame + | |
| 250 target_playout_delay); | |
| 251 --rtp_header_.frame_id; // "Frame 2" | |
| 252 --rtp_header_.reference_frame_id; // "Frame 1" | |
| 253 rtp_header_.rtp_timestamp -= rtp_advance_per_frame; | |
| 254 FeedOneFrameIntoReceiver(); | |
| 255 task_runner_->RunTasks(); | |
| 256 EXPECT_EQ(3, fake_video_client_.number_times_called()); | |
| 257 | |
| 258 // Move forward to the playout time of an unreceived Frame 5. Expect no | |
| 259 // additional frames were emitted. | |
| 260 testing_clock_->Advance(3 * time_advance_per_frame); | |
| 261 task_runner_->RunTasks(); | |
| 262 EXPECT_EQ(3, fake_video_client_.number_times_called()); | |
| 263 } | |
| 264 | |
| 265 } // namespace cast | |
| 266 } // namespace media | |
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Chromium Code Reviews
Issue 308043006:
[Cast] Clean-up: Merge RtpReceiver+AudioReceiver+VideoReceiver-->FrameReceiver. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src