Plumb render view ID from audio-related code in renderer through IPCs to AudioRendererHost in brows…

media/audio/audio_output_device_unittest.cc

 // Copyright (c) 2012 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 <vector>
 
 #include "base/at_exit.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
 #include "base/shared_memory.h"
@@ skipping 82 matching lines @@
 }  // namespace.
 
 class AudioOutputDeviceTest
     : public testing::Test,
       public testing::WithParamInterface<bool> {
  public:
   AudioOutputDeviceTest()
       : default_audio_parameters_(AudioParameters::AUDIO_PCM_LINEAR,
                                   CHANNEL_LAYOUT_STEREO,
                                   48000, 16, 1024),
-        audio_device_(new AudioOutputDevice(
-            &audio_output_ipc_, io_loop_.message_loop_proxy())),
         synchronized_io_(GetParam()),
         input_channels_(synchronized_io_ ? 2 : 0) {
   }
 
   ~AudioOutputDeviceTest() {}
 
   void Initialize();
   void StartAudioDevice();
   void CreateStream();
   void ExpectRenderCallback();
   void WaitUntilRenderCallback();
   void StopAudioDevice();
 
  protected:
   // Used to clean up TLS pointers that the test(s) will initialize.
   // Must remain the first member of this class.
   base::ShadowingAtExitManager at_exit_manager_;
   MessageLoopForIO io_loop_;
   const AudioParameters default_audio_parameters_;
   StrictMock<MockRenderCallback> callback_;
-  StrictMock<MockAudioOutputIPC> audio_output_ipc_;
+  StrictMock<MockAudioOutputIPC>* audio_output_ipc_;  // Owned by audio_device_.
   scoped_refptr<AudioOutputDevice> audio_device_;
 
  private:
   int CalculateMemorySize();
 
   const bool synchronized_io_;
   const int input_channels_;
   SharedMemory shared_memory_;
   CancelableSyncSocket browser_socket_;
   CancelableSyncSocket renderer_socket_;
@@ skipping 15 matching lines @@
   int io_buffer_size = output_memory_size + input_memory_size;
 
   // This is where it gets a bit hacky.  The shared memory contract between
   // AudioOutputDevice and its browser side counter part includes a bit more
   // than just the audio data, so we must call TotalSharedMemorySizeInBytes()
   // to get the actual size needed to fit the audio data plus the extra data.
   return TotalSharedMemorySizeInBytes(io_buffer_size);
 }
 
 void AudioOutputDeviceTest::Initialize() {
+  audio_output_ipc_ = new StrictMock<MockAudioOutputIPC>;
+  audio_device_ = new AudioOutputDevice(
+      scoped_ptr<AudioOutputIPC>(audio_output_ipc_),
+      io_loop_.message_loop_proxy());
+
   if (synchronized_io_) {
     audio_device_->InitializeIO(default_audio_parameters_,
                                 input_channels_,
                                 &callback_);
   } else {
     audio_device_->Initialize(default_audio_parameters_,
                               &callback_);
   }
   io_loop_.RunAllPending();
 }
 
 void AudioOutputDeviceTest::StartAudioDevice() {
   audio_device_->Start();
 
-  EXPECT_CALL(audio_output_ipc_, AddDelegate(audio_device_.get()))
+  EXPECT_CALL(*audio_output_ipc_, AddDelegate(audio_device_.get()))
       .WillOnce(Return(kStreamId));
-  EXPECT_CALL(audio_output_ipc_, CreateStream(kStreamId, _, _));
+  EXPECT_CALL(*audio_output_ipc_, CreateStream(kStreamId, _, _));
 
   io_loop_.RunAllPending();
 }
 
 void AudioOutputDeviceTest::CreateStream() {
   const int kMemorySize = CalculateMemorySize();
 
   ASSERT_TRUE(shared_memory_.CreateAndMapAnonymous(kMemorySize));
   memset(shared_memory_.memory(), 0xff, kMemorySize);
 
@@ skipping 15 matching lines @@
   io_loop_.RunAllPending();
 }
 
 void AudioOutputDeviceTest::ExpectRenderCallback() {
   // We should get a 'play' notification when we call OnStreamCreated().
   // Respond by asking for some audio data.  This should ask our callback
   // to provide some audio data that AudioOutputDevice then writes into the
   // shared memory section.
   const int kMemorySize = CalculateMemorySize();
 
-  EXPECT_CALL(audio_output_ipc_, PlayStream(kStreamId))
+  EXPECT_CALL(*audio_output_ipc_, PlayStream(kStreamId))
       .WillOnce(SendPendingBytes(&browser_socket_, kMemorySize));
 
   // We expect calls to our audio renderer callback, which returns the number
   // of frames written to the memory section.
   // Here's the second place where it gets hacky:  There's no way for us to
   // know (without using a sleep loop!) when the AudioOutputDevice has finished
   // writing the interleaved audio data into the shared memory section.
   // So, for the sake of this test, we consider the call to Render a sign
   // of success and quit the loop.
   if (synchronized_io_) {
@@ skipping 13 matching lines @@
 void AudioOutputDeviceTest::WaitUntilRenderCallback() {
   // Don't hang the test if we never get the Render() callback.
   io_loop_.PostDelayedTask(FROM_HERE, MessageLoop::QuitClosure(),
                            TestTimeouts::action_timeout());
   io_loop_.Run();
 }
 
 void AudioOutputDeviceTest::StopAudioDevice() {
   audio_device_->Stop();
 
-  EXPECT_CALL(audio_output_ipc_, CloseStream(kStreamId));
-  EXPECT_CALL(audio_output_ipc_, RemoveDelegate(kStreamId));
+  EXPECT_CALL(*audio_output_ipc_, CloseStream(kStreamId));
+  EXPECT_CALL(*audio_output_ipc_, RemoveDelegate(kStreamId));
 
   io_loop_.RunAllPending();
 }
 
 TEST_P(AudioOutputDeviceTest, Initialize) {
   Initialize();
 }
 
 // Calls Start() followed by an immediate Stop() and check for the basic message
 // filter messages being sent in that case.
@@ skipping 16 matching lines @@
 // on the IO loop.
 TEST_P(AudioOutputDeviceTest, StopBeforeRender) {
   Initialize();
   StartAudioDevice();
 
   // Call Stop() but don't run the IO loop yet.
   audio_device_->Stop();
 
   // Expect us to shutdown IPC but not to render anything despite the stream
   // getting created.
-  EXPECT_CALL(audio_output_ipc_, CloseStream(kStreamId));
-  EXPECT_CALL(audio_output_ipc_, RemoveDelegate(kStreamId));
+  EXPECT_CALL(*audio_output_ipc_, CloseStream(kStreamId));
+  EXPECT_CALL(*audio_output_ipc_, RemoveDelegate(kStreamId));
   CreateStream();
 }
 
 // Full test with output only.
 TEST_P(AudioOutputDeviceTest, CreateStream) {
   Initialize();
   StartAudioDevice();
   ExpectRenderCallback();
   CreateStream();
   WaitUntilRenderCallback();
   StopAudioDevice();
 }
 
 INSTANTIATE_TEST_CASE_P(Render, AudioOutputDeviceTest, Values(false));
 INSTANTIATE_TEST_CASE_P(RenderIO, AudioOutputDeviceTest, Values(true));
 
 }  // namespace media.