Allow media track switching.

media/renderers/video_renderer_impl_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 33 matching lines @@
 
 namespace media {
 
 MATCHER_P(HasTimestampMatcher, ms, "") {
   *result_listener << "has timestamp " << arg->timestamp().InMilliseconds();
   return arg->timestamp().InMilliseconds() == ms;
 }
 
 class VideoRendererImplTest : public testing::Test {
  public:
+  ScopedVector<VideoDecoder> CreateVideoDecodersForTest() {
+    decoder_ = new NiceMock<MockVideoDecoder>();
+    ScopedVector<VideoDecoder> decoders;
+    decoders.push_back(decoder_);
+    EXPECT_CALL(*decoder_, Initialize(_, _, _, _, _))
+        .WillOnce(DoAll(SaveArg<4>(&output_cb_),
+                        RunCallback<3>(expect_init_success_)));
+    // Monitor decodes from the decoder.
+    ON_CALL(*decoder_, Decode(_, _))
+        .WillByDefault(Invoke(this, &VideoRendererImplTest::DecodeRequested));
+    ON_CALL(*decoder_, Reset(_))
+        .WillByDefault(Invoke(this, &VideoRendererImplTest::FlushRequested));
+    return decoders;
+  }
+
   VideoRendererImplTest()
       : tick_clock_(new base::SimpleTestTickClock()),
-        decoder_(new NiceMock<MockVideoDecoder>()),
+        decoder_(nullptr),
         demuxer_stream_(DemuxerStream::VIDEO) {
-    ScopedVector<VideoDecoder> decoders;
-    decoders.push_back(decoder_);
-
     null_video_sink_.reset(new NullVideoSink(
         false, base::TimeDelta::FromSecondsD(1.0 / 60),
         base::Bind(&MockCB::FrameReceived, base::Unretained(&mock_cb_)),
         message_loop_.task_runner()));
 
     renderer_.reset(new VideoRendererImpl(
         message_loop_.task_runner(), message_loop_.task_runner().get(),
-        null_video_sink_.get(), std::move(decoders), true,
+        null_video_sink_.get(),
+        base::Bind(&VideoRendererImplTest::CreateVideoDecodersForTest,
+                   base::Unretained(this)),
+        true,
         nullptr,  // gpu_factories
         new MediaLog()));
     renderer_->SetTickClockForTesting(
         std::unique_ptr<base::TickClock>(tick_clock_));
     null_video_sink_->set_tick_clock_for_testing(tick_clock_);
     time_source_.set_tick_clock_for_testing(tick_clock_);
 
     // Start wallclock time at a non-zero value.
     AdvanceWallclockTimeInMs(12345);
 
     demuxer_stream_.set_video_decoder_config(TestVideoConfig::Normal());
 
     // We expect these to be called but we don't care how/when.
     EXPECT_CALL(demuxer_stream_, Read(_)).WillRepeatedly(
         RunCallback<0>(DemuxerStream::kOk,
                        scoped_refptr<DecoderBuffer>(new DecoderBuffer(0))));
   }
 
   virtual ~VideoRendererImplTest() {}
 
   void Initialize() {
     InitializeWithLowDelay(false);
   }
 
   void InitializeWithLowDelay(bool low_delay) {
-    // Monitor decodes from the decoder.
-    ON_CALL(*decoder_, Decode(_, _))
-        .WillByDefault(Invoke(this, &VideoRendererImplTest::DecodeRequested));
-    ON_CALL(*decoder_, Reset(_))
-        .WillByDefault(Invoke(this, &VideoRendererImplTest::FlushRequested));
-
     // Initialize, we shouldn't have any reads.
-    InitializeRenderer(low_delay, true);
+    InitializeRenderer(&demuxer_stream_, low_delay, true);
   }
 
-  void InitializeRenderer(bool low_delay, bool expect_success) {
+  void InitializeRenderer(MockDemuxerStream* demuxer_stream,
+                          bool low_delay,
+                          bool expect_success) {
     SCOPED_TRACE(base::StringPrintf("InitializeRenderer(%d)", expect_success));
+    expect_init_success_ = expect_success;
     WaitableMessageLoopEvent event;
-    CallInitialize(event.GetPipelineStatusCB(), low_delay, expect_success);
+    CallInitialize(demuxer_stream, event.GetPipelineStatusCB(), low_delay,
+                   expect_success);
     event.RunAndWaitForStatus(expect_success ? PIPELINE_OK
                                              : DECODER_ERROR_NOT_SUPPORTED);
   }
 
-  void CallInitialize(const PipelineStatusCB& status_cb,
+  void CallInitialize(MockDemuxerStream* demuxer_stream,
+                      const PipelineStatusCB& status_cb,
                       bool low_delay,
                       bool expect_success) {
     if (low_delay)
-      demuxer_stream_.set_liveness(DemuxerStream::LIVENESS_LIVE);
-    EXPECT_CALL(*decoder_, Initialize(_, _, _, _, _))
-        .WillOnce(
-            DoAll(SaveArg<4>(&output_cb_), RunCallback<3>(expect_success)));
+      demuxer_stream->set_liveness(DemuxerStream::LIVENESS_LIVE);
     EXPECT_CALL(mock_cb_, OnWaitingForDecryptionKey()).Times(0);
-    renderer_->Initialize(&demuxer_stream_, nullptr, &mock_cb_,
+    renderer_->Initialize(demuxer_stream, nullptr, &mock_cb_,
                           base::Bind(&WallClockTimeSource::GetWallClockTimes,
                                      base::Unretained(&time_source_)),
                           status_cb);
   }
 
   void StartPlayingFrom(int milliseconds) {
     SCOPED_TRACE(base::StringPrintf("StartPlayingFrom(%d)", milliseconds));
     const base::TimeDelta media_time =
         base::TimeDelta::FromMilliseconds(milliseconds);
     time_source_.SetMediaTime(media_time);
@@ skipping 293 matching lines @@
     Destroy();
   }
 
  protected:
   // Fixture members.
   std::unique_ptr<VideoRendererImpl> renderer_;
   base::SimpleTestTickClock* tick_clock_;  // Owned by |renderer_|.
   NiceMock<MockVideoDecoder>* decoder_;    // Owned by |renderer_|.
   NiceMock<MockDemuxerStream> demuxer_stream_;
 
+  bool expect_init_success_;
+
   // Use StrictMock<T> to catch missing/extra callbacks.
   class MockCB : public MockRendererClient {
    public:
     MOCK_METHOD1(FrameReceived, void(const scoped_refptr<VideoFrame>&));
   };
   StrictMock<MockCB> mock_cb_;
 
   // Must be destroyed before |renderer_| since they share |tick_clock_|.
   std::unique_ptr<NullVideoSink> null_video_sink_;
 
@@ skipping 85 matching lines @@
     EXPECT_CALL(mock_cb_, OnEnded());
     SatisfyPendingDecodeWithEndOfStream();
     event.RunAndWait();
   }
   // Firing a time state changed to true should be ignored...
   renderer_->OnTimeProgressing();
   EXPECT_FALSE(null_video_sink_->is_started());
   Destroy();
 }
 
+TEST_F(VideoRendererImplTest, ReinitializeForAnotherStream) {
+  Initialize();
+  StartPlayingFrom(0);
+  Flush();
+  NiceMock<MockDemuxerStream> new_stream(DemuxerStream::VIDEO);
+  new_stream.set_video_decoder_config(TestVideoConfig::Normal());
+  InitializeRenderer(&new_stream, false, true);
+}
+
 TEST_F(VideoRendererImplTest, DestroyWhileInitializing) {
-  CallInitialize(NewExpectedStatusCB(PIPELINE_ERROR_ABORT), false, PIPELINE_OK);
+  CallInitialize(&demuxer_stream_, NewExpectedStatusCB(PIPELINE_ERROR_ABORT),
+                 false, PIPELINE_OK);
   Destroy();
 }
 
 TEST_F(VideoRendererImplTest, DestroyWhileFlushing) {
   Initialize();
   QueueFrames("0 10 20 30");
   EXPECT_CALL(mock_cb_, FrameReceived(HasTimestampMatcher(0)));
   EXPECT_CALL(mock_cb_, OnBufferingStateChange(BUFFERING_HAVE_ENOUGH));
   EXPECT_CALL(mock_cb_, OnStatisticsUpdate(_)).Times(AnyNumber());
   EXPECT_CALL(mock_cb_, OnVideoNaturalSizeChange(_)).Times(1);
@@ skipping 166 matching lines @@
   EXPECT_CALL(mock_cb_, OnVideoOpacityChange(_)).Times(1);
   StartPlayingFrom(0);
 
   // Check that there is an outstanding Read() request.
   EXPECT_TRUE(IsReadPending());
 
   Destroy();
 }
 
 TEST_F(VideoRendererImplTest, VideoDecoder_InitFailure) {
-  InitializeRenderer(false, false);
+  InitializeRenderer(&demuxer_stream_, false, false);
   Destroy();
 }
 
 TEST_F(VideoRendererImplTest, Underflow) {
   BasicUnderflowTest(UnderflowTestType::NORMAL);
 }
 
 TEST_F(VideoRendererImplTest, Underflow_LowDelay) {
   BasicUnderflowTest(UnderflowTestType::LOW_DELAY);
 }
@@ skipping 446 matching lines @@
   QueueFrames("0 10 20 30");
   StartPlayingFrom(0);
   Flush();
   ASSERT_EQ(1u, frame_ready_cbs_.size());
   // This frame will be discarded.
   frame_ready_cbs_.front().Run();
   Destroy();
 }
 
 }  // namespace media