Move android mediaplayer from render process to browser process.

webkit/media/android/media_player_bridge_manager_impl.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 "webkit/media/android/media_player_bridge_manager_impl.h"
+
+#include "media/base/android/media_player_bridge.h"
+
+namespace webkit_media {
+
+MediaPlayerBridgeManagerImpl::MediaPlayerBridgeManagerImpl(
+    int threshold)
+    : active_player_threshold_(threshold) {
+}
+
+MediaPlayerBridgeManagerImpl::~MediaPlayerBridgeManagerImpl() {
+}
+
+void MediaPlayerBridgeManagerImpl::RequestMediaResources(
+    media::MediaPlayerBridge* player) {
+  if (player == NULL)
+    return;
+
+  int num_active_player = 0;
+  std::vector<media::MediaPlayerBridge*>::iterator it;
+  for (it = players_.begin(); it != players_.end(); ++it) {
+    // The player is already active, ignore it.
+    if ((*it) == player)
+      return;
+
+    num_active_player++;
+  }
+
+  if (num_active_player < active_player_threshold_) {
+    players_.push_back(player);
+    return;
+  }
+
+  // Get a list of the players to free.
+  std::vector<media::MediaPlayerBridge*> players_to_release;
+  for (it = players_.begin(); it != players_.end(); ++it) {
+    if ((*it)->prepared() && !(*it)->IsPlaying())
+      players_to_release.push_back(*it);
+  }
+
+  // Calling release() will result in a call to ReleaseMediaResources(), so
+  // the player will be removed from |players_|.
+  for (it = players_to_release.begin(); it != players_to_release.end(); ++it)
+    (*it)->Release();
+
+  players_.push_back(player);
+}
+
+void MediaPlayerBridgeManagerImpl::ReleaseMediaResources(
+    media::MediaPlayerBridge* player) {
+  for (std::vector<media::MediaPlayerBridge*>::iterator it = players_.begin();
+      it != players_.end(); ++it) {
+    if ((*it) == player) {
+      players_.erase(it);
+      return;
+    }
+  }
+}
+
+}  // namespace webkit_media