Move the device enumerate/open/close work to device thread from IO thread

content/browser/renderer_host/media/video_capture_host_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 <map>
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
 #include "base/stl_util.h"
 #include "base/stringprintf.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/media/video_capture_host.h"
 #include "content/browser/renderer_host/media/video_capture_manager.h"
 #include "content/common/media/video_capture_messages.h"
 #include "content/public/test/mock_resource_context.h"
-#include "media/audio/audio_manager.h"
 #include "media/video/capture/video_capture_types.h"
 #include "net/url_request/url_request_context.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::_;
 using ::testing::AtLeast;
 using ::testing::AnyNumber;
 using ::testing::DoAll;
 using ::testing::InSequence;
@@ skipping 32 matching lines @@
     }
   }
 
  private:
   file_util::ScopedFILE file_;
   int expected_size_;
 };
 
 class MockVideoCaptureHost : public VideoCaptureHost {
  public:
-  MockVideoCaptureHost(content::ResourceContext* resource_context,
-                       media::AudioManager* audio_manager)
-      : VideoCaptureHost(resource_context, audio_manager),
+  MockVideoCaptureHost(content::ResourceContext* resource_context)
+      : VideoCaptureHost(resource_context),
         return_buffers_(false),
         dump_video_(false) {}
 
   // A list of mock methods.
   MOCK_METHOD4(OnNewBufferCreated,
                void(int device_id, base::SharedMemoryHandle handle,
                     int length, int buffer_id));
   MOCK_METHOD3(OnBufferFilled,
                void(int device_id, int buffer_id, base::Time timestamp));
   MOCK_METHOD2(OnStateChanged,
@@ skipping 114 matching lines @@
     message_loop_.reset(new MessageLoop(MessageLoop::TYPE_IO));
 
     // ResourceContext must be created on the UI thread.
     ui_thread_.reset(new BrowserThreadImpl(BrowserThread::UI,
                                            message_loop_.get()));
 
     // MediaStreamManager must be created on the IO thread.
     io_thread_.reset(new BrowserThreadImpl(BrowserThread::IO,
                                            message_loop_.get()));
 
-    audio_manager_.reset(media::AudioManager::Create());
-
 #ifndef TEST_REAL_CAPTURE_DEVICE
     media_stream::MediaStreamManager::GetForResourceContext(
-        &resource_context_, audio_manager_.get())->UseFakeDevice();
+        &resource_context_)->UseFakeDevice();
 #endif
 
-    host_ = new MockVideoCaptureHost(&resource_context_, audio_manager_.get());
+    host_ = new MockVideoCaptureHost(&resource_context_);
 
     // Simulate IPC channel connected.
     host_->OnChannelConnected(base::GetCurrentProcId());
   }
 
   virtual void TearDown() {
     // Verifies and removes the expectations on host_ and
     // returns true iff successful.
     Mock::VerifyAndClearExpectations(host_);
 
@@ skipping 12 matching lines @@
     SyncWithVideoCaptureManagerThread();
   }
 
   // Called on the VideoCaptureManager thread.
   static void PostQuitMessageLoop(MessageLoop* message_loop) {
     message_loop->PostTask(FROM_HERE, MessageLoop::QuitClosure());
   }
 
   // Called on the main thread.
   static void PostQuitOnVideoCaptureManagerThread(
-      MessageLoop* message_loop, content::ResourceContext* resource_context,
-      media:: AudioManager* audio_manager) {
+      MessageLoop* message_loop, content::ResourceContext* resource_context) {
     media_stream::MediaStreamManager* manager =
         media_stream::MediaStreamManager::GetForResourceContext(
-            resource_context, audio_manager);
-    manager->video_capture_manager()->GetMessageLoop()->PostTask(
+            resource_context);
+    manager->GetMessageLoop()->PostTask(
         FROM_HERE, base::Bind(&PostQuitMessageLoop, message_loop));
   }
 
   // SyncWithVideoCaptureManagerThread() waits until all pending tasks on the
   // video_capture_manager thread are executed while also processing pending
   // task in message_loop_ on the current thread. It is used to synchronize
   // with the video capture manager thread when we are stopping a video
   // capture device.
   void SyncWithVideoCaptureManagerThread() {
     message_loop_->PostTask(
         FROM_HERE,
         base::Bind(&PostQuitOnVideoCaptureManagerThread, message_loop_.get(),
-                   &resource_context_, audio_manager_.get()));
+                   &resource_context_));
     message_loop_->Run();
   }
 
   void StartCapture() {
     InSequence s;
     // 1. First - get info about the new resolution
     EXPECT_CALL(*host_, OnDeviceInfo(kDeviceId));
 
     // 2. Change state to started
     EXPECT_CALL(*host_, OnStateChanged(kDeviceId,
@@ skipping 78 matching lines @@
     host_->OnError(id);
     SyncWithVideoCaptureManagerThread();
   }
 
   scoped_refptr<MockVideoCaptureHost> host_;
 
  private:
   scoped_ptr<MessageLoop> message_loop_;
   scoped_ptr<BrowserThreadImpl> ui_thread_;
   scoped_ptr<BrowserThreadImpl> io_thread_;
-  scoped_ptr<media::AudioManager> audio_manager_;
   content::MockResourceContext resource_context_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureHostTest);
 };
 
 TEST_F(VideoCaptureHostTest, StartCapture) {
   StartCapture();
 }
 
 TEST_F(VideoCaptureHostTest, StartCapturePlayStop) {
@@ skipping 21 matching lines @@
 }
 
 #ifdef DUMP_VIDEO
 TEST_F(VideoCaptureHostTest, CaptureAndDumpVideoVga) {
   CaptureAndDumpVideo(640, 480, 30);
 }
 TEST_F(VideoCaptureHostTest, CaptureAndDump720P) {
   CaptureAndDumpVideo(1280, 720, 30);
 }
 #endif