| // 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 "content/browser/media/media_internals_proxy.h" |
| |
| #include "base/bind.h" |
| #include "base/location.h" |
| #include "base/task/post_task.h" |
| #include "build/build_config.h" |
| #include "content/browser/media/media_internals.h" |
| #include "content/browser/media/media_internals_handler.h" |
| #include "content/public/browser/browser_task_traits.h" |
| #include "content/public/browser/browser_thread.h" |
| |
| namespace content { |
| |
| MediaInternalsProxy::MediaInternalsProxy() { |
| } |
| |
| MediaInternalsProxy::~MediaInternalsProxy() {} |
| |
| void MediaInternalsProxy::Attach(MediaInternalsMessageHandler* handler) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| handler_ = handler; |
| update_callback_ = base::Bind(&MediaInternalsProxy::UpdateUIOnUIThread, this); |
| MediaInternals::GetInstance()->AddUpdateCallback(update_callback_); |
| } |
| |
| void MediaInternalsProxy::Detach() { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| handler_ = nullptr; |
| MediaInternals::GetInstance()->RemoveUpdateCallback(update_callback_); |
| } |
| |
| void MediaInternalsProxy::GetEverything() { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| MediaInternals::GetInstance()->SendHistoricalMediaEvents(); |
| MediaInternals::GetInstance()->SendGeneralAudioInformation(); |
| #if !defined(OS_ANDROID) |
| MediaInternals::GetInstance()->SendAudioFocusState(); |
| #endif |
| |
| // Ask MediaInternals for its data on IO thread. |
| base::PostTask( |
| FROM_HERE, {BrowserThread::IO}, |
| base::BindOnce(&MediaInternalsProxy::GetEverythingOnIOThread, this)); |
| } |
| |
| void MediaInternalsProxy::GetEverythingOnIOThread() { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| // TODO(xhwang): Investigate whether we can update on UI thread directly. |
| MediaInternals::GetInstance()->SendAudioStreamData(); |
| MediaInternals::GetInstance()->SendVideoCaptureDeviceCapabilities(); |
| } |
| |
| void MediaInternalsProxy::UpdateUIOnUIThread(const base::string16& update) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| // Don't forward updates to a destructed UI. |
| if (handler_) |
| handler_->OnUpdate(update); |
| } |
| |
| } // namespace content |