dom/speakermanager/SpeakerManagerServiceChild.cpp

   1 /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "SpeakerManagerServiceChild.h"
   8 #include "mozilla/Services.h"
   9 #include "mozilla/StaticPtr.h"
  10 #include "mozilla/unused.h"
  11 #include "mozilla/dom/ContentChild.h"
  12 #include "mozilla/dom/ContentParent.h"
  13 #include "nsIObserverService.h"
  14 #include "nsThreadUtils.h"
  15 #include "AudioChannelService.h"
  16 #include <cutils/properties.h>
  17
  18 using namespace mozilla;
  19 using namespace mozilla::dom;
  20
  21 StaticRefPtr<SpeakerManagerServiceChild> gSpeakerManagerServiceChild;
  22
  23 // static
  24 SpeakerManagerService*
  25 SpeakerManagerServiceChild::GetOrCreateSpeakerManagerService()
  26 {
  27   MOZ_ASSERT(NS_IsMainThread());
  28
  29   // If we already exist, exit early
  30   if (gSpeakerManagerServiceChild) {
  31     return gSpeakerManagerServiceChild;
  32   }
  33
  34   // Create new instance, register, return
  35   nsRefPtr<SpeakerManagerServiceChild> service = new SpeakerManagerServiceChild();
  36
  37   gSpeakerManagerServiceChild = service;
  38
  39   return gSpeakerManagerServiceChild;
  40 }
  41
  42 // static
  43 SpeakerManagerService*
  44 SpeakerManagerServiceChild::GetSpeakerManagerService()
  45 {
  46   MOZ_ASSERT(NS_IsMainThread());
  47
  48   return gSpeakerManagerServiceChild;
  49 }
  50
  51 void
  52 SpeakerManagerServiceChild::ForceSpeaker(bool aEnable, bool aVisible)
  53 {
  54   mVisible = aVisible;
  55   mOrgSpeakerStatus = aEnable;
  56   ContentChild *cc = ContentChild::GetSingleton();
  57   if (cc) {
  58     cc->SendSpeakerManagerForceSpeaker(aEnable && aVisible);
  59   }
  60 }
  61
  62 bool
  63 SpeakerManagerServiceChild::GetSpeakerStatus()
  64 {
  65   ContentChild *cc = ContentChild::GetSingleton();
  66   bool status = false;
  67   if (cc) {
  68     cc->SendSpeakerManagerGetSpeakerStatus(&status);
  69   }
  70   char propQemu[PROPERTY_VALUE_MAX];
  71   property_get("ro.kernel.qemu", propQemu, "");
  72   if (!strncmp(propQemu, "1", 1)) {
  73     return mOrgSpeakerStatus;
  74   }
  75   return status;
  76 }
  77
  78 void
  79 SpeakerManagerServiceChild::Shutdown()
  80 {
  81   if (gSpeakerManagerServiceChild) {
  82     gSpeakerManagerServiceChild = nullptr;
  83   }
  84 }
  85
  86 void
  87 SpeakerManagerServiceChild::SetAudioChannelActive(bool aIsActive)
  88 {
  89   // Content process and switch to background with no audio and speaker forced.
  90   // Then disable speaker
  91   for (uint32_t i = 0; i < mRegisteredSpeakerManagers.Length(); i++) {
  92     mRegisteredSpeakerManagers[i]->SetAudioChannelActive(aIsActive);
  93   }
  94 }
  95
  96 SpeakerManagerServiceChild::SpeakerManagerServiceChild()
  97 {
  98   MOZ_ASSERT(NS_IsMainThread());
  99   AudioChannelService* audioChannelService = AudioChannelService::GetOrCreateAudioChannelService();
 100   if (audioChannelService) {
 101     audioChannelService->RegisterSpeakerManager(this);
 102   }
 103   MOZ_COUNT_CTOR(SpeakerManagerServiceChild);
 104 }
 105
 106 SpeakerManagerServiceChild::~SpeakerManagerServiceChild()
 107 {
 108   AudioChannelService* audioChannelService = AudioChannelService::GetOrCreateAudioChannelService();
 109   if (audioChannelService) {
 110     audioChannelService->UnregisterSpeakerManager(this);
 111   }
 112   MOZ_COUNT_DTOR(SpeakerManagerServiceChild);
 113 }
 114
 115 void
 116 SpeakerManagerServiceChild::Notify()
 117 {
 118   for (uint32_t i = 0; i < mRegisteredSpeakerManagers.Length(); i++) {
 119     mRegisteredSpeakerManagers[i]->DispatchSimpleEvent(NS_LITERAL_STRING("speakerforcedchange"));
 120   }
 121 }