content/browser/renderer_host/media/peer_connection_tracker_host.cc

   1 // Copyright (c) 2013 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 #include "content/browser/renderer_host/media/peer_connection_tracker_host.h"
   5
   6 #include "base/power_monitor/power_monitor.h"
   7 #include "content/browser/media/webrtc_internals.h"
   8 #include "content/common/media/peer_connection_tracker_messages.h"
   9 #include "content/public/browser/render_process_host.h"
  10
  11 namespace content {
  12
  13 PeerConnectionTrackerHost::PeerConnectionTrackerHost(int render_process_id)
  14     : BrowserMessageFilter(PeerConnectionTrackerMsgStart),
  15       render_process_id_(render_process_id) {
  16 }
  17
  18 bool PeerConnectionTrackerHost::OnMessageReceived(const IPC::Message& message) {
  19   bool handled = true;
  20
  21   IPC_BEGIN_MESSAGE_MAP(PeerConnectionTrackerHost, message)
  22     IPC_MESSAGE_HANDLER(PeerConnectionTrackerHost_AddPeerConnection,
  23                         OnAddPeerConnection)
  24     IPC_MESSAGE_HANDLER(PeerConnectionTrackerHost_RemovePeerConnection,
  25                         OnRemovePeerConnection)
  26     IPC_MESSAGE_HANDLER(PeerConnectionTrackerHost_UpdatePeerConnection,
  27                         OnUpdatePeerConnection)
  28     IPC_MESSAGE_HANDLER(PeerConnectionTrackerHost_AddStats, OnAddStats)
  29     IPC_MESSAGE_HANDLER(PeerConnectionTrackerHost_GetUserMedia, OnGetUserMedia)
  30     IPC_MESSAGE_UNHANDLED(handled = false)
  31   IPC_END_MESSAGE_MAP()
  32   return handled;
  33 }
  34
  35 void PeerConnectionTrackerHost::OverrideThreadForMessage(
  36     const IPC::Message& message, BrowserThread::ID* thread) {
  37   if (IPC_MESSAGE_CLASS(message) == PeerConnectionTrackerMsgStart)
  38     *thread = BrowserThread::UI;
  39 }
  40
  41 PeerConnectionTrackerHost::~PeerConnectionTrackerHost() {
  42 }
  43
  44 void PeerConnectionTrackerHost::OnChannelConnected(int32 peer_pid) {
  45   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  46   // Add PowerMonitor when connected to channel rather than in constructor due
  47   // to thread safety concerns. Observers of PowerMonitor must be added and
  48   // removed on the same thread. BrowserMessageFilter is created on the UI
  49   // thread but can be destructed on the UI or IO thread because they are
  50   // referenced by RenderProcessHostImpl on the UI thread and ChannelProxy on
  51   // the IO thread. Using OnChannelConnected and OnChannelClosing guarantees
  52   // execution on the IO thread.
  53   base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
  54   if (power_monitor)
  55     power_monitor->AddObserver(this);
  56 }
  57
  58 void PeerConnectionTrackerHost::OnChannelClosing() {
  59   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  60   base::PowerMonitor* power_monitor = base::PowerMonitor::Get();
  61   if (power_monitor)
  62     power_monitor->RemoveObserver(this);
  63 }
  64
  65 void PeerConnectionTrackerHost::OnAddPeerConnection(
  66     const PeerConnectionInfo& info) {
  67   WebRTCInternals::GetInstance()->OnAddPeerConnection(
  68       render_process_id_,
  69       peer_pid(),
  70       info.lid,
  71       info.url,
  72       info.rtc_configuration,
  73       info.constraints);
  74 }
  75
  76 void PeerConnectionTrackerHost::OnRemovePeerConnection(int lid) {
  77   WebRTCInternals::GetInstance()->OnRemovePeerConnection(peer_pid(), lid);
  78 }
  79
  80 void PeerConnectionTrackerHost::OnUpdatePeerConnection(
  81     int lid, const std::string& type, const std::string& value) {
  82   WebRTCInternals::GetInstance()->OnUpdatePeerConnection(
  83       peer_pid(),
  84       lid,
  85       type,
  86       value);
  87 }
  88
  89 void PeerConnectionTrackerHost::OnAddStats(int lid,
  90                                            const base::ListValue& value) {
  91   WebRTCInternals::GetInstance()->OnAddStats(peer_pid(), lid, value);
  92 }
  93
  94 void PeerConnectionTrackerHost::OnGetUserMedia(
  95     const std::string& origin,
  96     bool audio,
  97     bool video,
  98     const std::string& audio_constraints,
  99     const std::string& video_constraints) {
 100   WebRTCInternals::GetInstance()->OnGetUserMedia(render_process_id_,
 101                                                  peer_pid(),
 102                                                  origin,
 103                                                  audio,
 104                                                  video,
 105                                                  audio_constraints,
 106                                                  video_constraints);
 107 }
 108
 109 void PeerConnectionTrackerHost::OnSuspend() {
 110   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
 111       base::Bind(&PeerConnectionTrackerHost::SendOnSuspendOnUIThread, this));
 112 }
 113
 114 void PeerConnectionTrackerHost::SendOnSuspendOnUIThread() {
 115   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 116   content::RenderProcessHost* host =
 117       content::RenderProcessHost::FromID(render_process_id_);
 118   if (host)
 119     host->Send(new PeerConnectionTracker_OnSuspend());
 120 }
 121
 122 }  // namespace content