Make RendererMediaPlayerManager a RenderFrameObserver.

content/browser/media/android/media_web_contents_observer.cc

+// Copyright 2014 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/android/media_web_contents_observer.h"
+
+#include "base/stl_util.h"
+#include "content/browser/media/android/browser_media_player_manager.h"
+#include "content/common/media/cdm_messages.h"
+#include "content/common/media/media_player_messages_android.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/web_contents.h"
+#include "ipc/ipc_message_macros.h"
+
+namespace content {
+
+MediaWebContentsObserver::MediaWebContentsObserver(
+    RenderViewHost* render_view_host)
+    : WebContentsObserver(WebContents::FromRenderViewHost(render_view_host)) {
+}
+
+MediaWebContentsObserver::~MediaWebContentsObserver() {
+  STLDeleteValues(&media_player_managers_);
+}
+
+void MediaWebContentsObserver::RenderFrameDeleted(
+    RenderFrameHost* render_frame_host) {
+  BrowserMediaPlayerManager* player_manager =
+      GetMediaPlayerManager(render_frame_host);
+  if (player_manager)
+    delete player_manager;
+  media_player_managers_.erase(render_frame_host);
+}
+
+bool MediaWebContentsObserver::OnMessageReceived(
+    const IPC::Message& msg,
+    RenderFrameHost* render_frame_host) {
+  BrowserMediaPlayerManager* player_manager =
+      GetMediaPlayerManager(render_frame_host);
+  DCHECK(player_manager);
+
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(MediaWebContentsObserver, msg)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_EnterFullscreen,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnEnterFullscreen)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_ExitFullscreen,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnExitFullscreen)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_Initialize,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnInitialize)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_Start,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnStart)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_Seek,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnSeek)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_Pause,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnPause)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_SetVolume,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnSetVolume)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_SetPoster,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnSetPoster)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_Release,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnReleaseResources)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_DestroyMediaPlayer,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnDestroyPlayer)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_DestroyAllMediaPlayers,
+                        player_manager,
+                        BrowserMediaPlayerManager::DestroyAllMediaPlayers)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_SetCdm,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnSetCdm)
+    IPC_MESSAGE_FORWARD(CdmHostMsg_InitializeCdm,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnInitializeCdm)
+    IPC_MESSAGE_FORWARD(CdmHostMsg_CreateSession,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnCreateSession)
+    IPC_MESSAGE_FORWARD(CdmHostMsg_UpdateSession,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnUpdateSession)
+    IPC_MESSAGE_FORWARD(CdmHostMsg_ReleaseSession,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnReleaseSession)
+    IPC_MESSAGE_FORWARD(CdmHostMsg_DestroyCdm,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnDestroyCdm)
+#if defined(VIDEO_HOLE)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_NotifyExternalSurface,
+                        player_manager,
+                        BrowserMediaPlayerManager::OnNotifyExternalSurface)
+#endif  // defined(VIDEO_HOLE)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+BrowserMediaPlayerManager* MediaWebContentsObserver::GetMediaPlayerManager(
+    RenderFrameHost* render_frame_host) {
+  if (!ContainsKey(media_player_managers_, render_frame_host)) {
+    media_player_managers_[render_frame_host] =
+        BrowserMediaPlayerManager::Create(render_frame_host);
+  }
+
+  return media_player_managers_[render_frame_host];
+}
+
+void MediaWebContentsObserver::PauseVideo() {
+  for (MediaPlayerManagerMap::iterator iter = media_player_managers_.begin();
+      iter != media_player_managers_.end(); ++iter) {
+    BrowserMediaPlayerManager* manager = iter->second;
+    manager->PauseVideo();
+  }
+}
+
+#if defined(VIDEO_HOLE)
+void MediaWebContentsObserver::OnFrameInfoUpdated() {
+  for (MediaPlayerManagerMap::iterator iter = media_player_managers_.begin();
+      iter != media_player_managers_.end(); ++iter) {
+    BrowserMediaPlayerManager* manager = iter->second;
+    manager->OnFrameInfoUpdated();
+  }
+}
+#endif  // defined(VIDEO_HOLE)
+
+}  // namespace content