chrome/browser/ui/ash/media_delegate_chromeos.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/ash/media_delegate_chromeos.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/system/tray/system_tray_notifier.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "chrome/browser/chromeos/extensions/media_player_api.h"
  11 #include "chrome/browser/chromeos/extensions/media_player_event_router.h"
  12 #include "chrome/browser/media/media_stream_capture_indicator.h"
  13 #include "chrome/browser/profiles/profile_manager.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/browser_list.h"
  16 #include "chrome/browser/ui/browser_window.h"
  17 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  18 #include "content/public/browser/render_view_host.h"
  19 #include "content/public/browser/web_contents.h"
  20 #include "extensions/browser/app_window/app_window.h"
  21 #include "extensions/browser/app_window/app_window_registry.h"
  22 #include "extensions/browser/process_manager.h"
  23
  24 namespace {
  25
  26 void GetMediaCaptureState(
  27     const MediaStreamCaptureIndicator* indicator,
  28     content::WebContents* web_contents,
  29     int* media_state_out) {
  30   if (indicator->IsCapturingVideo(web_contents))
  31     *media_state_out |= ash::MEDIA_CAPTURE_VIDEO;
  32   if (indicator->IsCapturingAudio(web_contents))
  33     *media_state_out |= ash::MEDIA_CAPTURE_AUDIO;
  34 }
  35
  36 void GetBrowserMediaCaptureState(
  37     const MediaStreamCaptureIndicator* indicator,
  38     const content::BrowserContext* context,
  39     int* media_state_out) {
  40
  41   const BrowserList* desktop_list =
  42       BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_ASH);
  43
  44   for (BrowserList::BrowserVector::const_iterator iter = desktop_list->begin();
  45        iter != desktop_list->end();
  46        ++iter) {
  47     TabStripModel* tab_strip_model = (*iter)->tab_strip_model();
  48     for (int i = 0; i < tab_strip_model->count(); ++i) {
  49       content::WebContents* web_contents = tab_strip_model->GetWebContentsAt(i);
  50       if (web_contents->GetBrowserContext() != context)
  51         continue;
  52       GetMediaCaptureState(indicator, web_contents, media_state_out);
  53       if (*media_state_out == ash::MEDIA_CAPTURE_AUDIO_VIDEO)
  54         return;
  55     }
  56   }
  57 }
  58
  59 void GetAppMediaCaptureState(
  60     const MediaStreamCaptureIndicator* indicator,
  61     content::BrowserContext* context,
  62     int* media_state_out) {
  63   const extensions::AppWindowRegistry::AppWindowList& apps =
  64       extensions::AppWindowRegistry::Get(context)->app_windows();
  65   for (extensions::AppWindowRegistry::AppWindowList::const_iterator iter =
  66            apps.begin();
  67        iter != apps.end();
  68        ++iter) {
  69     GetMediaCaptureState(indicator, (*iter)->web_contents(), media_state_out);
  70     if (*media_state_out == ash::MEDIA_CAPTURE_AUDIO_VIDEO)
  71       return;
  72   }
  73 }
  74
  75 void GetExtensionMediaCaptureState(
  76     const MediaStreamCaptureIndicator* indicator,
  77     content::BrowserContext* context,
  78     int* media_state_out) {
  79   for (content::RenderFrameHost* host :
  80            extensions::ProcessManager::Get(context)->GetAllFrames()) {
  81     content::WebContents* web_contents =
  82         content::WebContents::FromRenderFrameHost(host);
  83     // RFH may not have web contents.
  84     if (!web_contents)
  85       continue;
  86     GetMediaCaptureState(indicator, web_contents, media_state_out);
  87     if (*media_state_out == ash::MEDIA_CAPTURE_AUDIO_VIDEO)
  88       return;
  89   }
  90 }
  91
  92 ash::MediaCaptureState GetMediaCaptureStateOfAllWebContents(
  93     content::BrowserContext* context) {
  94   if (!context)
  95     return ash::MEDIA_CAPTURE_NONE;
  96
  97   scoped_refptr<MediaStreamCaptureIndicator> indicator =
  98       MediaCaptureDevicesDispatcher::GetInstance()
  99           ->GetMediaStreamCaptureIndicator();
 100
 101   int media_state = ash::MEDIA_CAPTURE_NONE;
 102   // Browser windows
 103   GetBrowserMediaCaptureState(indicator.get(), context, &media_state);
 104   if (media_state == ash::MEDIA_CAPTURE_AUDIO_VIDEO)
 105     return ash::MEDIA_CAPTURE_AUDIO_VIDEO;
 106
 107   // App windows
 108   GetAppMediaCaptureState(indicator.get(), context, &media_state);
 109   if (media_state == ash::MEDIA_CAPTURE_AUDIO_VIDEO)
 110     return ash::MEDIA_CAPTURE_AUDIO_VIDEO;
 111
 112   // Extensions
 113   GetExtensionMediaCaptureState(indicator.get(), context, &media_state);
 114
 115   return static_cast<ash::MediaCaptureState>(media_state);
 116 }
 117
 118 }  // namespace
 119
 120 MediaDelegateChromeOS::MediaDelegateChromeOS() : weak_ptr_factory_(this) {
 121   MediaCaptureDevicesDispatcher::GetInstance()->AddObserver(this);
 122 }
 123
 124 MediaDelegateChromeOS::~MediaDelegateChromeOS() {
 125   MediaCaptureDevicesDispatcher::GetInstance()->RemoveObserver(this);
 126 }
 127
 128 void MediaDelegateChromeOS::HandleMediaNextTrack() {
 129   extensions::MediaPlayerAPI::Get(ProfileManager::GetActiveUserProfile())
 130       ->media_player_event_router()
 131       ->NotifyNextTrack();
 132 }
 133
 134 void MediaDelegateChromeOS::HandleMediaPlayPause() {
 135   extensions::MediaPlayerAPI::Get(ProfileManager::GetActiveUserProfile())
 136       ->media_player_event_router()
 137       ->NotifyTogglePlayState();
 138 }
 139
 140 void MediaDelegateChromeOS::HandleMediaPrevTrack() {
 141   extensions::MediaPlayerAPI::Get(ProfileManager::GetActiveUserProfile())
 142       ->media_player_event_router()
 143       ->NotifyPrevTrack();
 144 }
 145
 146 ash::MediaCaptureState MediaDelegateChromeOS::GetMediaCaptureState(
 147     content::BrowserContext* context) {
 148   return GetMediaCaptureStateOfAllWebContents(context);
 149 }
 150
 151 void MediaDelegateChromeOS::OnRequestUpdate(
 152     int render_process_id,
 153     int render_frame_id,
 154     content::MediaStreamType stream_type,
 155     const content::MediaRequestState state) {
 156   base::MessageLoopForUI::current()->PostTask(
 157       FROM_HERE,
 158       base::Bind(&MediaDelegateChromeOS::NotifyMediaCaptureChange,
 159                  weak_ptr_factory_.GetWeakPtr()));
 160 }
 161
 162 void MediaDelegateChromeOS::NotifyMediaCaptureChange() {
 163   ash::Shell::GetInstance()
 164       ->system_tray_notifier()
 165       ->NotifyMediaCaptureChanged();
 166 }