Allow VideoCaptureImpl to suspend/resume frame delivery to its client.

content/renderer/render_view_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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 76 matching lines @@
 #include "content/renderer/load_progress_tracker.h"
 #include "content/renderer/media/audio_device_factory.h"
 #include "content/renderer/media/audio_renderer_mixer_manager.h"
 #include "content/renderer/media/media_stream_dependency_factory.h"
 #include "content/renderer/media/media_stream_dispatcher.h"
 #include "content/renderer/media/media_stream_impl.h"
 #include "content/renderer/media/render_media_log.h"
 #include "content/renderer/media/renderer_audio_output_device.h"
 #include "content/renderer/media/renderer_gpu_video_decoder_factories.h"
 #include "content/renderer/media/rtc_peer_connection_handler.h"
+#include "content/renderer/media/video_capture_impl_manager.h"
 #include "content/renderer/mhtml_generator.h"
 #include "content/renderer/notification_provider.h"
 #include "content/renderer/pepper/pepper_plugin_delegate_impl.h"
 #include "content/renderer/plugin_channel_host.h"
 #include "content/renderer/render_process.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/render_view_impl_params.h"
 #include "content/renderer/render_view_mouse_lock_dispatcher.h"
 #include "content/renderer/render_widget_fullscreen_pepper.h"
 #include "content/renderer/renderer_date_time_picker.h"
@@ skipping 5745 matching lines @@
 void RenderViewImpl::OnWasHidden() {
   RenderWidget::OnWasHidden();
 
 #if defined(OS_ANDROID)
   // Inform WebMediaPlayerManagerAndroid to release all media player resources.
   // unless some audio is playing.
   // If something is in progress the resource will not be freed, it will
   // only be freed once the tab is destroyed or if the user navigates away
   // via WebMediaPlayerAndroid::Destroy
   media_player_manager_->ReleaseMediaResources();
+
+#if defined(ENABLE_WEBRTC)
+  RenderThreadImpl::current()->video_capture_impl_manager()->
+      SuspendDevices(true);
+#endif
 #endif
 
   if (webview()) {
     webview()->settings()->setMinimumTimerInterval(
         webkit_glue::kBackgroundTabTimerInterval);
     webview()->setVisibilityState(visibilityState(), false);
   }
 
   // Inform PPAPI plugins that their page is no longer visible.
   pepper_helper_->PageVisibilityChanged(false);
 
 #if defined(OS_MACOSX)
   // Inform NPAPI plugins that their container is no longer visible.
   std::set<WebPluginDelegateProxy*>::iterator plugin_it;
   for (plugin_it = plugin_delegates_.begin();
        plugin_it != plugin_delegates_.end(); ++plugin_it) {
     (*plugin_it)->SetContainerVisibility(false);
   }
 #endif  // OS_MACOSX
 }
 
 void RenderViewImpl::OnWasShown(bool needs_repainting) {
   RenderWidget::OnWasShown(needs_repainting);
 
+#if defined(OS_ANDROID) && defined(ENABLE_WEBRTC)
+  RenderThreadImpl::current()->video_capture_impl_manager()->
+      SuspendDevices(false);
+#endif
+
   if (webview()) {
     webview()->settings()->setMinimumTimerInterval(
         webkit_glue::kForegroundTabTimerInterval);
     webview()->setVisibilityState(visibilityState(), false);
   }
 
   // Inform PPAPI plugins that their page is visible.
   pepper_helper_->PageVisibilityChanged(true);
 
 #if defined(OS_MACOSX)
@@ skipping 707 matching lines @@
     WebURL url = icon_urls[i].iconURL();
     if (!url.isEmpty())
       urls.push_back(FaviconURL(url,
                                 ToFaviconType(icon_urls[i].iconType())));
   }
   SendUpdateFaviconURL(urls);
 }
 
 
 }  // namespace content