media/renderers/video_renderer_impl_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 <utility>
   6
   7 #include "base/bind.h"
   8 #include "base/callback.h"
   9 #include "base/callback_helpers.h"
  10 #include "base/debug/stack_trace.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/stl_util.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "base/strings/string_split.h"
  15 #include "base/strings/stringprintf.h"
  16 #include "base/synchronization/lock.h"
  17 #include "base/test/simple_test_tick_clock.h"
  18 #include "media/base/data_buffer.h"
  19 #include "media/base/gmock_callback_support.h"
  20 #include "media/base/limits.h"
  21 #include "media/base/mock_filters.h"
  22 #include "media/base/null_video_sink.h"
  23 #include "media/base/test_helpers.h"
  24 #include "media/base/video_frame.h"
  25 #include "media/base/wall_clock_time_source.h"
  26 #include "media/renderers/video_renderer_impl.h"
  27 #include "testing/gtest/include/gtest/gtest.h"
  28
  29 using ::testing::_;
  30 using ::testing::AnyNumber;
  31 using ::testing::Invoke;
  32 using ::testing::Mock;
  33 using ::testing::NiceMock;
  34 using ::testing::Return;
  35 using ::testing::SaveArg;
  36 using ::testing::StrictMock;
  37
  38 namespace media {
  39
  40 ACTION_P(RunClosure, closure) {
  41   closure.Run();
  42 }
  43
  44 MATCHER_P(HasTimestamp, ms, "") {
  45   *result_listener << "has timestamp " << arg->timestamp().InMilliseconds();
  46   return arg->timestamp().InMilliseconds() == ms;
  47 }
  48
  49 class VideoRendererImplTest : public testing::TestWithParam<bool> {
  50  public:
  51   VideoRendererImplTest()
  52       : tick_clock_(new base::SimpleTestTickClock()),
  53         decoder_(new MockVideoDecoder()),
  54         demuxer_stream_(DemuxerStream::VIDEO) {
  55     ScopedVector<VideoDecoder> decoders;
  56     decoders.push_back(decoder_);
  57
  58     null_video_sink_.reset(new NullVideoSink(
  59         false, base::TimeDelta::FromSecondsD(1.0 / 60),
  60         base::Bind(&MockCB::FrameReceived, base::Unretained(&mock_cb_)),
  61         message_loop_.task_runner()));
  62
  63     renderer_.reset(new VideoRendererImpl(message_loop_.message_loop_proxy(),
  64                                           null_video_sink_.get(),
  65                                           decoders.Pass(), true,
  66                                           nullptr,  // gpu_factories
  67                                           new MediaLog()));
  68     if (!GetParam())
  69       renderer_->disable_new_video_renderer_for_testing();
  70     renderer_->SetTickClockForTesting(scoped_ptr<base::TickClock>(tick_clock_));
  71     null_video_sink_->set_tick_clock_for_testing(tick_clock_);
  72     time_source_.set_tick_clock_for_testing(tick_clock_);
  73
  74     // Start wallclock time at a non-zero value.
  75     AdvanceWallclockTimeInMs(12345);
  76
  77     demuxer_stream_.set_video_decoder_config(TestVideoConfig::Normal());
  78
  79     // We expect these to be called but we don't care how/when.
  80     EXPECT_CALL(demuxer_stream_, Read(_)).WillRepeatedly(
  81         RunCallback<0>(DemuxerStream::kOk,
  82                        scoped_refptr<DecoderBuffer>(new DecoderBuffer(0))));
  83   }
  84
  85   virtual ~VideoRendererImplTest() {}
  86
  87   void Initialize() {
  88     InitializeWithLowDelay(false);
  89   }
  90
  91   void InitializeWithLowDelay(bool low_delay) {
  92     // Monitor decodes from the decoder.
  93     EXPECT_CALL(*decoder_, Decode(_, _))
  94         .WillRepeatedly(Invoke(this, &VideoRendererImplTest::DecodeRequested));
  95
  96     EXPECT_CALL(*decoder_, Reset(_))
  97         .WillRepeatedly(Invoke(this, &VideoRendererImplTest::FlushRequested));
  98
  99     // Initialize, we shouldn't have any reads.
 100     InitializeRenderer(low_delay, true);
 101   }
 102
 103   void InitializeRenderer(bool low_delay, bool expect_to_success) {
 104     SCOPED_TRACE(
 105         base::StringPrintf("InitializeRenderer(%d)", expect_to_success));
 106     WaitableMessageLoopEvent event;
 107     CallInitialize(event.GetPipelineStatusCB(), low_delay, expect_to_success);
 108     event.RunAndWaitForStatus(expect_to_success ? PIPELINE_OK
 109                                                 : DECODER_ERROR_NOT_SUPPORTED);
 110   }
 111
 112   void CallInitialize(const PipelineStatusCB& status_cb,
 113                       bool low_delay,
 114                       bool expect_to_success) {
 115     if (low_delay)
 116       demuxer_stream_.set_liveness(DemuxerStream::LIVENESS_LIVE);
 117     EXPECT_CALL(*decoder_, Initialize(_, _, _, _))
 118         .WillOnce(
 119             DoAll(SaveArg<3>(&output_cb_), RunCallback<2>(expect_to_success)));
 120     EXPECT_CALL(*this, OnWaitingForDecryptionKey()).Times(0);
 121     renderer_->Initialize(
 122         &demuxer_stream_, status_cb, media::SetDecryptorReadyCB(),
 123         base::Bind(&VideoRendererImplTest::OnStatisticsUpdate,
 124                    base::Unretained(this)),
 125         base::Bind(&StrictMock<MockCB>::BufferingStateChange,
 126                    base::Unretained(&mock_cb_)),
 127         ended_event_.GetClosure(), error_event_.GetPipelineStatusCB(),
 128         base::Bind(&WallClockTimeSource::GetWallClockTimes,
 129                    base::Unretained(&time_source_)),
 130         base::Bind(&VideoRendererImplTest::OnWaitingForDecryptionKey,
 131                    base::Unretained(this)));
 132   }
 133
 134   void StartPlayingFrom(int milliseconds) {
 135     SCOPED_TRACE(base::StringPrintf("StartPlayingFrom(%d)", milliseconds));
 136     const base::TimeDelta media_time =
 137         base::TimeDelta::FromMilliseconds(milliseconds);
 138     time_source_.SetMediaTime(media_time);
 139     renderer_->StartPlayingFrom(media_time);
 140     message_loop_.RunUntilIdle();
 141   }
 142
 143   void Flush() {
 144     SCOPED_TRACE("Flush()");
 145     WaitableMessageLoopEvent event;
 146     renderer_->Flush(event.GetClosure());
 147     event.RunAndWait();
 148   }
 149
 150   void Destroy() {
 151     SCOPED_TRACE("Destroy()");
 152     renderer_.reset();
 153     message_loop_.RunUntilIdle();
 154   }
 155
 156   // Parses a string representation of video frames and generates corresponding
 157   // VideoFrame objects in |decode_results_|.
 158   //
 159   // Syntax:
 160   //   nn - Queue a decoder buffer with timestamp nn * 1000us
 161   //   abort - Queue an aborted read
 162   //   error - Queue a decoder error
 163   //
 164   // Examples:
 165   //   A clip that is four frames long: "0 10 20 30"
 166   //   A clip that has a decode error: "60 70 error"
 167   void QueueFrames(const std::string& str) {
 168     std::vector<std::string> tokens;
 169     base::SplitString(str, ' ', &tokens);
 170     for (size_t i = 0; i < tokens.size(); ++i) {
 171       if (tokens[i] == "abort") {
 172         scoped_refptr<VideoFrame> null_frame;
 173         decode_results_.push_back(
 174             std::make_pair(VideoDecoder::kAborted, null_frame));
 175         continue;
 176       }
 177
 178       if (tokens[i] == "error") {
 179         scoped_refptr<VideoFrame> null_frame;
 180         decode_results_.push_back(
 181             std::make_pair(VideoDecoder::kDecodeError, null_frame));
 182         continue;
 183       }
 184
 185       int timestamp_in_ms = 0;
 186       if (base::StringToInt(tokens[i], &timestamp_in_ms)) {
 187         gfx::Size natural_size = TestVideoConfig::NormalCodedSize();
 188         scoped_refptr<VideoFrame> frame = VideoFrame::CreateFrame(
 189             VideoFrame::YV12,
 190             natural_size,
 191             gfx::Rect(natural_size),
 192             natural_size,
 193             base::TimeDelta::FromMilliseconds(timestamp_in_ms));
 194         decode_results_.push_back(std::make_pair(VideoDecoder::kOk, frame));
 195         continue;
 196       }
 197
 198       CHECK(false) << "Unrecognized decoder buffer token: " << tokens[i];
 199     }
 200   }
 201
 202   bool IsReadPending() {
 203     return !decode_cb_.is_null();
 204   }
 205
 206   void WaitForError(PipelineStatus expected) {
 207     SCOPED_TRACE(base::StringPrintf("WaitForError(%d)", expected));
 208     error_event_.RunAndWaitForStatus(expected);
 209   }
 210
 211   void WaitForEnded() {
 212     SCOPED_TRACE("WaitForEnded()");
 213     ended_event_.RunAndWait();
 214   }
 215
 216   void WaitForPendingRead() {
 217     SCOPED_TRACE("WaitForPendingRead()");
 218     if (!decode_cb_.is_null())
 219       return;
 220
 221     DCHECK(wait_for_pending_decode_cb_.is_null());
 222
 223     WaitableMessageLoopEvent event;
 224     wait_for_pending_decode_cb_ = event.GetClosure();
 225     event.RunAndWait();
 226
 227     DCHECK(!decode_cb_.is_null());
 228     DCHECK(wait_for_pending_decode_cb_.is_null());
 229   }
 230
 231   void SatisfyPendingRead() {
 232     CHECK(!decode_cb_.is_null());
 233     CHECK(!decode_results_.empty());
 234
 235     // Post tasks for OutputCB and DecodeCB.
 236     scoped_refptr<VideoFrame> frame = decode_results_.front().second;
 237     if (frame.get())
 238       message_loop_.PostTask(FROM_HERE, base::Bind(output_cb_, frame));
 239     message_loop_.PostTask(
 240         FROM_HERE, base::Bind(base::ResetAndReturn(&decode_cb_),
 241                               decode_results_.front().first));
 242     decode_results_.pop_front();
 243   }
 244
 245   void SatisfyPendingReadWithEndOfStream() {
 246     DCHECK(!decode_cb_.is_null());
 247
 248     // Return EOS buffer to trigger EOS frame.
 249     EXPECT_CALL(demuxer_stream_, Read(_))
 250         .WillOnce(RunCallback<0>(DemuxerStream::kOk,
 251                                  DecoderBuffer::CreateEOSBuffer()));
 252
 253     // Satify pending |decode_cb_| to trigger a new DemuxerStream::Read().
 254     message_loop_.PostTask(
 255         FROM_HERE,
 256         base::Bind(base::ResetAndReturn(&decode_cb_), VideoDecoder::kOk));
 257
 258     WaitForPendingRead();
 259
 260     message_loop_.PostTask(
 261         FROM_HERE,
 262         base::Bind(base::ResetAndReturn(&decode_cb_), VideoDecoder::kOk));
 263   }
 264
 265   void AdvanceWallclockTimeInMs(int time_ms) {
 266     DCHECK_EQ(&message_loop_, base::MessageLoop::current());
 267     base::AutoLock l(lock_);
 268     tick_clock_->Advance(base::TimeDelta::FromMilliseconds(time_ms));
 269   }
 270
 271   void AdvanceTimeInMs(int time_ms) {
 272     DCHECK_EQ(&message_loop_, base::MessageLoop::current());
 273     base::AutoLock l(lock_);
 274     time_ += base::TimeDelta::FromMilliseconds(time_ms);
 275     time_source_.StopTicking();
 276     time_source_.SetMediaTime(time_);
 277     time_source_.StartTicking();
 278   }
 279
 280   bool has_ended() const {
 281     return ended_event_.is_signaled();
 282   }
 283
 284  protected:
 285   // Fixture members.
 286   scoped_ptr<VideoRendererImpl> renderer_;
 287   base::SimpleTestTickClock* tick_clock_;  // Owned by |renderer_|.
 288   MockVideoDecoder* decoder_;  // Owned by |renderer_|.
 289   NiceMock<MockDemuxerStream> demuxer_stream_;
 290
 291   // Use StrictMock<T> to catch missing/extra callbacks.
 292   class MockCB {
 293    public:
 294     MOCK_METHOD1(FrameReceived, void(const scoped_refptr<VideoFrame>&));
 295     MOCK_METHOD1(BufferingStateChange, void(BufferingState));
 296   };
 297   StrictMock<MockCB> mock_cb_;
 298
 299   // Must be destroyed before |renderer_| since they share |tick_clock_|.
 300   scoped_ptr<NullVideoSink> null_video_sink_;
 301
 302   PipelineStatistics last_pipeline_statistics_;
 303
 304   WallClockTimeSource time_source_;
 305
 306  private:
 307   void DecodeRequested(const scoped_refptr<DecoderBuffer>& buffer,
 308                        const VideoDecoder::DecodeCB& decode_cb) {
 309     DCHECK_EQ(&message_loop_, base::MessageLoop::current());
 310     CHECK(decode_cb_.is_null());
 311     decode_cb_ = decode_cb;
 312
 313     // Wake up WaitForPendingRead() if needed.
 314     if (!wait_for_pending_decode_cb_.is_null())
 315       base::ResetAndReturn(&wait_for_pending_decode_cb_).Run();
 316
 317     if (decode_results_.empty())
 318       return;
 319
 320     SatisfyPendingRead();
 321   }
 322
 323   void FlushRequested(const base::Closure& callback) {
 324     DCHECK_EQ(&message_loop_, base::MessageLoop::current());
 325     decode_results_.clear();
 326     if (!decode_cb_.is_null()) {
 327       QueueFrames("abort");
 328       SatisfyPendingRead();
 329     }
 330
 331     message_loop_.PostTask(FROM_HERE, callback);
 332   }
 333
 334   void OnStatisticsUpdate(const PipelineStatistics& stats) {
 335     last_pipeline_statistics_ = stats;
 336   }
 337
 338   MOCK_METHOD0(OnWaitingForDecryptionKey, void(void));
 339
 340   base::MessageLoop message_loop_;
 341
 342   // Used to protect |time_|.
 343   base::Lock lock_;
 344   base::TimeDelta time_;
 345
 346   // Used for satisfying reads.
 347   VideoDecoder::OutputCB output_cb_;
 348   VideoDecoder::DecodeCB decode_cb_;
 349   base::TimeDelta next_frame_timestamp_;
 350
 351   WaitableMessageLoopEvent error_event_;
 352   WaitableMessageLoopEvent ended_event_;
 353
 354   // Run during DecodeRequested() to unblock WaitForPendingRead().
 355   base::Closure wait_for_pending_decode_cb_;
 356
 357   std::deque<std::pair<
 358       VideoDecoder::Status, scoped_refptr<VideoFrame> > > decode_results_;
 359
 360   DISALLOW_COPY_AND_ASSIGN(VideoRendererImplTest);
 361 };
 362
 363 TEST_P(VideoRendererImplTest, DoNothing) {
 364   // Test that creation and deletion doesn't depend on calls to Initialize()
 365   // and/or Destroy().
 366 }
 367
 368 TEST_P(VideoRendererImplTest, DestroyWithoutInitialize) {
 369   Destroy();
 370 }
 371
 372 TEST_P(VideoRendererImplTest, Initialize) {
 373   Initialize();
 374   Destroy();
 375 }
 376
 377 TEST_P(VideoRendererImplTest, InitializeAndStartPlayingFrom) {
 378   Initialize();
 379   QueueFrames("0 10 20 30");
 380   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 381   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 382   StartPlayingFrom(0);
 383   Destroy();
 384 }
 385
 386 TEST_P(VideoRendererImplTest, InitializeAndEndOfStream) {
 387   Initialize();
 388   StartPlayingFrom(0);
 389   WaitForPendingRead();
 390   {
 391     SCOPED_TRACE("Waiting for BUFFERING_HAVE_ENOUGH");
 392     WaitableMessageLoopEvent event;
 393     EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH))
 394         .WillOnce(RunClosure(event.GetClosure()));
 395     SatisfyPendingReadWithEndOfStream();
 396     event.RunAndWait();
 397   }
 398   // Firing a time state changed to true should be ignored...
 399   renderer_->OnTimeStateChanged(true);
 400   EXPECT_FALSE(null_video_sink_->is_started());
 401   Destroy();
 402 }
 403
 404 TEST_P(VideoRendererImplTest, DestroyWhileInitializing) {
 405   CallInitialize(NewExpectedStatusCB(PIPELINE_ERROR_ABORT), false, PIPELINE_OK);
 406   Destroy();
 407 }
 408
 409 TEST_P(VideoRendererImplTest, DestroyWhileFlushing) {
 410   Initialize();
 411   QueueFrames("0 10 20 30");
 412   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 413   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 414   StartPlayingFrom(0);
 415   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_NOTHING));
 416   renderer_->Flush(NewExpectedClosure());
 417   Destroy();
 418 }
 419
 420 TEST_P(VideoRendererImplTest, Play) {
 421   Initialize();
 422   QueueFrames("0 10 20 30");
 423   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 424   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 425   StartPlayingFrom(0);
 426   Destroy();
 427 }
 428
 429 TEST_P(VideoRendererImplTest, FlushWithNothingBuffered) {
 430   Initialize();
 431   StartPlayingFrom(0);
 432
 433   // We shouldn't expect a buffering state change since we never reached
 434   // BUFFERING_HAVE_ENOUGH.
 435   Flush();
 436   Destroy();
 437 }
 438
 439 TEST_P(VideoRendererImplTest, DecodeError_Playing) {
 440   Initialize();
 441   QueueFrames("0 10 20 30");
 442   EXPECT_CALL(mock_cb_, FrameReceived(_)).Times(testing::AtLeast(1));
 443   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 444   StartPlayingFrom(0);
 445   renderer_->OnTimeStateChanged(true);
 446   time_source_.StartTicking();
 447   AdvanceTimeInMs(10);
 448
 449   QueueFrames("error");
 450   SatisfyPendingRead();
 451   WaitForError(PIPELINE_ERROR_DECODE);
 452   Destroy();
 453 }
 454
 455 TEST_P(VideoRendererImplTest, DecodeError_DuringStartPlayingFrom) {
 456   Initialize();
 457   QueueFrames("error");
 458   StartPlayingFrom(0);
 459   Destroy();
 460 }
 461
 462 TEST_P(VideoRendererImplTest, StartPlayingFrom_Exact) {
 463   Initialize();
 464   QueueFrames("50 60 70 80 90");
 465
 466   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(60)));
 467   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 468   StartPlayingFrom(60);
 469   Destroy();
 470 }
 471
 472 TEST_P(VideoRendererImplTest, StartPlayingFrom_RightBefore) {
 473   Initialize();
 474   QueueFrames("50 60 70 80 90");
 475
 476   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(50)));
 477   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 478   StartPlayingFrom(59);
 479   Destroy();
 480 }
 481
 482 TEST_P(VideoRendererImplTest, StartPlayingFrom_RightAfter) {
 483   Initialize();
 484   QueueFrames("50 60 70 80 90");
 485
 486   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(60)));
 487   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 488   StartPlayingFrom(61);
 489   Destroy();
 490 }
 491
 492 TEST_P(VideoRendererImplTest, StartPlayingFrom_LowDelay) {
 493   // In low-delay mode only one frame is required to finish preroll.
 494   InitializeWithLowDelay(true);
 495   QueueFrames("0");
 496
 497   // Expect some amount of have enough/nothing due to only requiring one frame.
 498   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 499   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH))
 500       .Times(AnyNumber());
 501   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_NOTHING))
 502       .Times(AnyNumber());
 503   StartPlayingFrom(0);
 504
 505   QueueFrames("10");
 506   SatisfyPendingRead();
 507
 508   renderer_->OnTimeStateChanged(true);
 509   time_source_.StartTicking();
 510
 511   WaitableMessageLoopEvent event;
 512   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(10)))
 513       .WillOnce(RunClosure(event.GetClosure()));
 514   AdvanceTimeInMs(10);
 515   event.RunAndWait();
 516
 517   Destroy();
 518 }
 519
 520 // Verify that a late decoder response doesn't break invariants in the renderer.
 521 TEST_P(VideoRendererImplTest, DestroyDuringOutstandingRead) {
 522   Initialize();
 523   QueueFrames("0 10 20 30");
 524   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 525   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 526   StartPlayingFrom(0);
 527
 528   // Check that there is an outstanding Read() request.
 529   EXPECT_TRUE(IsReadPending());
 530
 531   Destroy();
 532 }
 533
 534 TEST_P(VideoRendererImplTest, VideoDecoder_InitFailure) {
 535   InitializeRenderer(false, false);
 536   Destroy();
 537 }
 538
 539 TEST_P(VideoRendererImplTest, Underflow) {
 540   Initialize();
 541   QueueFrames("0 30 60 90");
 542
 543   {
 544     WaitableMessageLoopEvent event;
 545     EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 546     EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH))
 547         .WillOnce(RunClosure(event.GetClosure()));
 548     StartPlayingFrom(0);
 549     event.RunAndWait();
 550     Mock::VerifyAndClearExpectations(&mock_cb_);
 551   }
 552
 553   renderer_->OnTimeStateChanged(true);
 554
 555   // Advance time slightly, but enough to exceed the duration of the last frame.
 556   // Frames should be dropped and we should NOT signal having nothing.
 557   {
 558     SCOPED_TRACE("Waiting for frame drops");
 559     WaitableMessageLoopEvent event;
 560
 561     // Note: Starting the TimeSource will cause the old VideoRendererImpl to
 562     // start rendering frames on its own thread, so the first frame may be
 563     // received.
 564     time_source_.StartTicking();
 565     if (GetParam())
 566       EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(30))).Times(0);
 567     else
 568       EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(30))).Times(AnyNumber());
 569
 570     EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(60))).Times(0);
 571     EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(90)))
 572         .WillOnce(RunClosure(event.GetClosure()));
 573     AdvanceTimeInMs(91);
 574
 575     event.RunAndWait();
 576     Mock::VerifyAndClearExpectations(&mock_cb_);
 577   }
 578
 579   // Advance time more. Now we should signal having nothing. And put
 580   // the last frame up for display.
 581   {
 582     SCOPED_TRACE("Waiting for BUFFERING_HAVE_NOTHING");
 583     WaitableMessageLoopEvent event;
 584     EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_NOTHING))
 585         .WillOnce(RunClosure(event.GetClosure()));
 586     AdvanceTimeInMs(30);
 587     // The old rendering path needs wall clock time to increase too.
 588     if (!GetParam())
 589       AdvanceWallclockTimeInMs(30);
 590
 591     event.RunAndWait();
 592     Mock::VerifyAndClearExpectations(&mock_cb_);
 593   }
 594
 595   // Receiving end of stream should signal having enough.
 596   {
 597     SCOPED_TRACE("Waiting for BUFFERING_HAVE_ENOUGH");
 598     WaitableMessageLoopEvent event;
 599     EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH))
 600         .WillOnce(RunClosure(event.GetClosure()));
 601     SatisfyPendingReadWithEndOfStream();
 602     event.RunAndWait();
 603   }
 604
 605   WaitForEnded();
 606   Destroy();
 607 }
 608
 609 // Verifies that the sink is stopped after rendering the first frame if
 610 // playback hasn't started.
 611 TEST_P(VideoRendererImplTest, RenderingStopsAfterFirstFrame) {
 612   // This test is only for the new rendering path.
 613   if (!GetParam())
 614     return;
 615
 616   InitializeWithLowDelay(true);
 617   QueueFrames("0");
 618
 619   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 620   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 621
 622   {
 623     SCOPED_TRACE("Waiting for sink to stop.");
 624     WaitableMessageLoopEvent event;
 625
 626     null_video_sink_->set_background_render(true);
 627     null_video_sink_->set_stop_cb(event.GetClosure());
 628     StartPlayingFrom(0);
 629
 630     EXPECT_TRUE(IsReadPending());
 631     SatisfyPendingReadWithEndOfStream();
 632
 633     event.RunAndWait();
 634   }
 635
 636   EXPECT_FALSE(has_ended());
 637   Destroy();
 638 }
 639
 640 // Verifies that the sink is stopped after rendering the first frame if
 641 // playback ha started.
 642 TEST_P(VideoRendererImplTest, RenderingStopsAfterOneFrameWithEOS) {
 643   // This test is only for the new rendering path.
 644   if (!GetParam())
 645     return;
 646
 647   InitializeWithLowDelay(true);
 648   QueueFrames("0");
 649
 650   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 651   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 652
 653   {
 654     SCOPED_TRACE("Waiting for sink to stop.");
 655     WaitableMessageLoopEvent event;
 656
 657     null_video_sink_->set_stop_cb(event.GetClosure());
 658     StartPlayingFrom(0);
 659     renderer_->OnTimeStateChanged(true);
 660
 661     EXPECT_TRUE(IsReadPending());
 662     SatisfyPendingReadWithEndOfStream();
 663     WaitForEnded();
 664
 665     renderer_->OnTimeStateChanged(false);
 666     event.RunAndWait();
 667   }
 668
 669   Destroy();
 670 }
 671
 672 // Tests the case where the video started and received a single Render() call,
 673 // then the video was put into the background.
 674 TEST_P(VideoRendererImplTest, RenderingStartedThenStopped) {
 675   // This test is only for the new rendering path.
 676   if (!GetParam())
 677     return;
 678
 679   Initialize();
 680   QueueFrames("0 30 60 90");
 681
 682   // Start the sink and wait for the first callback.  Set statistics to a non
 683   // zero value, once we have some decoded frames they should be overwritten.
 684   last_pipeline_statistics_.video_frames_dropped = 1;
 685   {
 686     WaitableMessageLoopEvent event;
 687     EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 688     EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)))
 689         .WillOnce(RunClosure(event.GetClosure()));
 690     StartPlayingFrom(0);
 691     event.RunAndWait();
 692     Mock::VerifyAndClearExpectations(&mock_cb_);
 693     EXPECT_EQ(0u, last_pipeline_statistics_.video_frames_dropped);
 694   }
 695
 696   renderer_->OnTimeStateChanged(true);
 697   time_source_.StartTicking();
 698
 699   // Suspend all future callbacks and synthetically advance the media time,
 700   // because this is a background render, we won't underflow by waiting until
 701   // a pending read is ready.
 702   null_video_sink_->set_background_render(true);
 703   AdvanceTimeInMs(91);
 704   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(90)));
 705   WaitForPendingRead();
 706   SatisfyPendingReadWithEndOfStream();
 707
 708   // If this wasn't background rendering mode, this would result in two frames
 709   // being dropped, but since we set background render to true, none should be
 710   // reported
 711   EXPECT_EQ(0u, last_pipeline_statistics_.video_frames_dropped);
 712   EXPECT_EQ(4u, last_pipeline_statistics_.video_frames_decoded);
 713
 714   AdvanceTimeInMs(30);
 715   WaitForEnded();
 716   Destroy();
 717 }
 718
 719 TEST_P(VideoRendererImplTest, StartPlayingFromThenFlushThenEOS) {
 720   // This test is only for the new rendering path.
 721   if (!GetParam())
 722     return;
 723
 724   Initialize();
 725   QueueFrames("0 30 60 90");
 726
 727   WaitableMessageLoopEvent event;
 728   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestamp(0)));
 729   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH))
 730       .WillOnce(RunClosure(event.GetClosure()));
 731   StartPlayingFrom(0);
 732   event.RunAndWait();
 733
 734   // Cycle ticking so that we get a non-null reference time.
 735   time_source_.StartTicking();
 736   time_source_.StopTicking();
 737
 738   // Flush and simulate a seek past EOS, where some error prevents the decoder
 739   // from returning any frames.
 740   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_NOTHING));
 741   Flush();
 742
 743   StartPlayingFrom(200);
 744   WaitForPendingRead();
 745   SatisfyPendingReadWithEndOfStream();
 746   EXPECT_CALL(mock_cb_, BufferingStateChange(BUFFERING_HAVE_ENOUGH));
 747   WaitForEnded();
 748   Destroy();
 749 }
 750
 751 INSTANTIATE_TEST_CASE_P(OldVideoRenderer,
 752                         VideoRendererImplTest,
 753                         testing::Values(false));
 754 INSTANTIATE_TEST_CASE_P(NewVideoRenderer,
 755                         VideoRendererImplTest,
 756                         testing::Values(true));
 757
 758 }  // namespace media