michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/dom/FMRadio.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "mozilla/Hal.h"
michael@0: #include "mozilla/HalTypes.h"
michael@0: #include "mozilla/Preferences.h"
michael@0: #include "mozilla/dom/FMRadioBinding.h"
michael@0: #include "mozilla/dom/ContentChild.h"
michael@0: #include "mozilla/dom/PFMRadioChild.h"
michael@0: #include "mozilla/dom/FMRadioService.h"
michael@0: #include "DOMRequest.h"
michael@0: #include "nsDOMClassInfo.h"
michael@0: #include "nsIDocShell.h"
michael@0: #include "nsIInterfaceRequestorUtils.h"
michael@0: #include "nsIAudioManager.h"
michael@0: 
michael@0: #undef LOG
michael@0: #define LOG(args...) FM_LOG("FMRadio", args)
michael@0: 
michael@0: // The pref indicates if the device has an internal antenna.
michael@0: // If the pref is true, the antanna will be always available.
michael@0: #define DOM_FM_ANTENNA_INTERNAL_PREF "dom.fmradio.antenna.internal"
michael@0: 
michael@0: using namespace mozilla::hal;
michael@0: using mozilla::Preferences;
michael@0: 
michael@0: BEGIN_FMRADIO_NAMESPACE
michael@0: 
michael@0: class FMRadioRequest MOZ_FINAL : public FMRadioReplyRunnable
michael@0:                                , public DOMRequest
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0: 
michael@0:   FMRadioRequest(nsPIDOMWindow* aWindow, FMRadio* aFMRadio)
michael@0:     : DOMRequest(aWindow)
michael@0:     , mType(FMRadioRequestArgs::T__None)
michael@0:   {
michael@0:     // |FMRadio| inherits from |nsIDOMEventTarget| and |nsISupportsWeakReference|
michael@0:     // which both inherits from nsISupports, so |nsISupports| is an ambiguous
michael@0:     // base of |FMRadio|, we have to cast |aFMRadio| to one of the base classes.
michael@0:     mFMRadio = do_GetWeakReference(static_cast<nsIDOMEventTarget*>(aFMRadio));
michael@0:   }
michael@0: 
michael@0:   FMRadioRequest(nsPIDOMWindow* aWindow, FMRadio* aFMRadio,
michael@0:     FMRadioRequestArgs::Type aType)
michael@0:     : DOMRequest(aWindow)
michael@0:   {
michael@0:     MOZ_ASSERT(aType >= FMRadioRequestArgs::T__None &&
michael@0:                aType <= FMRadioRequestArgs::T__Last,
michael@0:                "Wrong FMRadioRequestArgs in FMRadioRequest");
michael@0: 
michael@0:     mFMRadio = do_GetWeakReference(static_cast<nsIDOMEventTarget*>(aFMRadio));
michael@0:     mType = aType;
michael@0:   }
michael@0: 
michael@0:   ~FMRadioRequest() { }
michael@0: 
michael@0:   NS_IMETHODIMP
michael@0:   Run()
michael@0:   {
michael@0:     MOZ_ASSERT(NS_IsMainThread(), "Wrong thread!");
michael@0: 
michael@0:     nsCOMPtr<nsIDOMEventTarget> target = do_QueryReferent(mFMRadio);
michael@0:     if (!target) {
michael@0:       return NS_OK;
michael@0:     }
michael@0: 
michael@0:     FMRadio* fmRadio = static_cast<FMRadio*>(
michael@0:       static_cast<nsIDOMEventTarget*>(target));
michael@0: 
michael@0:     if (fmRadio->mIsShutdown) {
michael@0:       return NS_OK;
michael@0:     }
michael@0: 
michael@0:     switch (mResponseType.type()) {
michael@0:       case FMRadioResponseType::TErrorResponse:
michael@0:         FireError(mResponseType.get_ErrorResponse().error());
michael@0:         break;
michael@0:       case FMRadioResponseType::TSuccessResponse:
michael@0:         if (mType == FMRadioRequestArgs::TEnableRequestArgs) {
michael@0:           fmRadio->EnableAudioChannelAgent();
michael@0:         }
michael@0: 
michael@0:         FireSuccess(JS::UndefinedHandleValue);
michael@0:         break;
michael@0:       default:
michael@0:         MOZ_CRASH();
michael@0:     }
michael@0: 
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   FMRadioRequestArgs::Type mType;
michael@0:   nsWeakPtr mFMRadio;
michael@0: };
michael@0: 
michael@0: NS_IMPL_ISUPPORTS_INHERITED0(FMRadioRequest, DOMRequest)
michael@0: 
michael@0: FMRadio::FMRadio()
michael@0:   : mHeadphoneState(SWITCH_STATE_OFF)
michael@0:   , mAudioChannelAgentEnabled(false)
michael@0:   , mHasInternalAntenna(false)
michael@0:   , mIsShutdown(false)
michael@0: {
michael@0:   LOG("FMRadio is initialized.");
michael@0: 
michael@0:   SetIsDOMBinding();
michael@0: }
michael@0: 
michael@0: FMRadio::~FMRadio()
michael@0: {
michael@0: }
michael@0: 
michael@0: void
michael@0: FMRadio::Init(nsPIDOMWindow *aWindow)
michael@0: {
michael@0:   BindToOwner(aWindow);
michael@0: 
michael@0:   IFMRadioService::Singleton()->AddObserver(this);
michael@0: 
michael@0:   mHasInternalAntenna = Preferences::GetBool(DOM_FM_ANTENNA_INTERNAL_PREF,
michael@0:                                              /* default = */ false);
michael@0:   if (mHasInternalAntenna) {
michael@0:     LOG("We have an internal antenna.");
michael@0:   } else {
michael@0:     mHeadphoneState = GetCurrentSwitchState(SWITCH_HEADPHONES);
michael@0:     RegisterSwitchObserver(SWITCH_HEADPHONES, this);
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(GetOwner());
michael@0:   NS_ENSURE_TRUE_VOID(target);
michael@0:   target->AddSystemEventListener(NS_LITERAL_STRING("visibilitychange"), this,
michael@0:                                  /* useCapture = */ true,
michael@0:                                  /* wantsUntrusted = */ false);
michael@0: 
michael@0: 
michael@0:   // All of the codes below are for AudioChannel. We can directly return here
michael@0:   // if preferences doesn't enable AudioChannelService.
michael@0:   NS_ENSURE_TRUE_VOID(Preferences::GetBool("media.useAudioChannelService"));
michael@0: 
michael@0:   nsCOMPtr<nsIAudioChannelAgent> audioChannelAgent =
michael@0:     do_CreateInstance("@mozilla.org/audiochannelagent;1");
michael@0:   NS_ENSURE_TRUE_VOID(audioChannelAgent);
michael@0: 
michael@0:   audioChannelAgent->InitWithWeakCallback(
michael@0:     GetOwner(),
michael@0:     nsIAudioChannelAgent::AUDIO_AGENT_CHANNEL_CONTENT,
michael@0:     this);
michael@0: 
michael@0:   nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
michael@0:   NS_ENSURE_TRUE_VOID(docshell);
michael@0: 
michael@0:   bool isActive = false;
michael@0:   docshell->GetIsActive(&isActive);
michael@0:   audioChannelAgent->SetVisibilityState(isActive);
michael@0: 
michael@0:   // Once all necessary resources are got successfully, we just enabled
michael@0:   // mAudioChannelAgent.
michael@0:   mAudioChannelAgent = audioChannelAgent;
michael@0: }
michael@0: 
michael@0: void
michael@0: FMRadio::Shutdown()
michael@0: {
michael@0:   IFMRadioService::Singleton()->RemoveObserver(this);
michael@0: 
michael@0:   if (!mHasInternalAntenna) {
michael@0:     UnregisterSwitchObserver(SWITCH_HEADPHONES, this);
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(GetOwner());
michael@0:   NS_ENSURE_TRUE_VOID(target);
michael@0:   target->RemoveSystemEventListener(NS_LITERAL_STRING("visibilitychange"), this,
michael@0:                                     /* useCapture = */ true);
michael@0: 
michael@0:   mIsShutdown = true;
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: FMRadio::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return FMRadioBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: void
michael@0: FMRadio::Notify(const SwitchEvent& aEvent)
michael@0: {
michael@0:   MOZ_ASSERT(!mHasInternalAntenna);
michael@0: 
michael@0:   if (mHeadphoneState != aEvent.status()) {
michael@0:     mHeadphoneState = aEvent.status();
michael@0: 
michael@0:     DispatchTrustedEvent(NS_LITERAL_STRING("antennaavailablechange"));
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: FMRadio::Notify(const FMRadioEventType& aType)
michael@0: {
michael@0:   switch (aType) {
michael@0:     case FrequencyChanged:
michael@0:       DispatchTrustedEvent(NS_LITERAL_STRING("frequencychange"));
michael@0:       break;
michael@0:     case EnabledChanged:
michael@0:       if (Enabled()) {
michael@0:         DispatchTrustedEvent(NS_LITERAL_STRING("enabled"));
michael@0:       } else {
michael@0:         if (mAudioChannelAgentEnabled) {
michael@0:           mAudioChannelAgent->StopPlaying();
michael@0:           mAudioChannelAgentEnabled = false;
michael@0:         }
michael@0: 
michael@0:         DispatchTrustedEvent(NS_LITERAL_STRING("disabled"));
michael@0:       }
michael@0:       break;
michael@0:     default:
michael@0:       MOZ_CRASH();
michael@0:   }
michael@0: }
michael@0: 
michael@0: /* static */
michael@0: bool
michael@0: FMRadio::Enabled()
michael@0: {
michael@0:   return IFMRadioService::Singleton()->IsEnabled();
michael@0: }
michael@0: 
michael@0: bool
michael@0: FMRadio::AntennaAvailable() const
michael@0: {
michael@0:   return mHasInternalAntenna ? true : (mHeadphoneState != SWITCH_STATE_OFF) &&
michael@0:     (mHeadphoneState != SWITCH_STATE_UNKNOWN);
michael@0: }
michael@0: 
michael@0: Nullable<double>
michael@0: FMRadio::GetFrequency() const
michael@0: {
michael@0:   return Enabled() ?
michael@0:     Nullable<double>(IFMRadioService::Singleton()->GetFrequency()) :
michael@0:     Nullable<double>();
michael@0: }
michael@0: 
michael@0: double
michael@0: FMRadio::FrequencyUpperBound() const
michael@0: {
michael@0:   return IFMRadioService::Singleton()->GetFrequencyUpperBound();
michael@0: }
michael@0: 
michael@0: double
michael@0: FMRadio::FrequencyLowerBound() const
michael@0: {
michael@0:   return IFMRadioService::Singleton()->GetFrequencyLowerBound();
michael@0: }
michael@0: 
michael@0: double
michael@0: FMRadio::ChannelWidth() const
michael@0: {
michael@0:   return IFMRadioService::Singleton()->GetChannelWidth();
michael@0: }
michael@0: 
michael@0: already_AddRefed<DOMRequest>
michael@0: FMRadio::Enable(double aFrequency)
michael@0: {
michael@0:   nsCOMPtr<nsPIDOMWindow> win = GetOwner();
michael@0:   if (!win) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsRefPtr<FMRadioRequest> r =
michael@0:     new FMRadioRequest(win, this, FMRadioRequestArgs::TEnableRequestArgs);
michael@0:   IFMRadioService::Singleton()->Enable(aFrequency, r);
michael@0: 
michael@0:   return r.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<DOMRequest>
michael@0: FMRadio::Disable()
michael@0: {
michael@0:   nsCOMPtr<nsPIDOMWindow> win = GetOwner();
michael@0:   if (!win) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
michael@0:   IFMRadioService::Singleton()->Disable(r);
michael@0: 
michael@0:   return r.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<DOMRequest>
michael@0: FMRadio::SetFrequency(double aFrequency)
michael@0: {
michael@0:   nsCOMPtr<nsPIDOMWindow> win = GetOwner();
michael@0:   if (!win) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
michael@0:   IFMRadioService::Singleton()->SetFrequency(aFrequency, r);
michael@0: 
michael@0:   return r.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<DOMRequest>
michael@0: FMRadio::SeekUp()
michael@0: {
michael@0:   nsCOMPtr<nsPIDOMWindow> win = GetOwner();
michael@0:   if (!win) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
michael@0:   IFMRadioService::Singleton()->Seek(FM_RADIO_SEEK_DIRECTION_UP, r);
michael@0: 
michael@0:   return r.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<DOMRequest>
michael@0: FMRadio::SeekDown()
michael@0: {
michael@0:   nsCOMPtr<nsPIDOMWindow> win = GetOwner();
michael@0:   if (!win) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
michael@0:   IFMRadioService::Singleton()->Seek(FM_RADIO_SEEK_DIRECTION_DOWN, r);
michael@0: 
michael@0:   return r.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<DOMRequest>
michael@0: FMRadio::CancelSeek()
michael@0: {
michael@0:   nsCOMPtr<nsPIDOMWindow> win = GetOwner();
michael@0:   if (!win) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
michael@0:   IFMRadioService::Singleton()->CancelSeek(r);
michael@0: 
michael@0:   return r.forget();
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: FMRadio::HandleEvent(nsIDOMEvent* aEvent)
michael@0: {
michael@0:   nsAutoString type;
michael@0:   aEvent->GetType(type);
michael@0: 
michael@0:   if (!type.EqualsLiteral("visibilitychange")) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
michael@0:   NS_ENSURE_TRUE(docshell, NS_ERROR_FAILURE);
michael@0: 
michael@0:   bool isActive = false;
michael@0:   docshell->GetIsActive(&isActive);
michael@0: 
michael@0:   mAudioChannelAgent->SetVisibilityState(isActive);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: FMRadio::EnableAudioChannelAgent()
michael@0: {
michael@0:   NS_ENSURE_TRUE_VOID(mAudioChannelAgent);
michael@0: 
michael@0:   int32_t playingState = 0;
michael@0:   mAudioChannelAgent->StartPlaying(&playingState);
michael@0:   SetCanPlay(playingState == AudioChannelState::AUDIO_CHANNEL_STATE_NORMAL);
michael@0: 
michael@0:   mAudioChannelAgentEnabled = true;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: FMRadio::CanPlayChanged(int32_t aCanPlay)
michael@0: {
michael@0:   SetCanPlay(aCanPlay == AudioChannelState::AUDIO_CHANNEL_STATE_NORMAL);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: FMRadio::WindowVolumeChanged()
michael@0: {
michael@0:   return NS_ERROR_NOT_IMPLEMENTED;
michael@0: }
michael@0: 
michael@0: void
michael@0: FMRadio::SetCanPlay(bool aCanPlay)
michael@0: {
michael@0:   IFMRadioService::Singleton()->EnableAudio(aCanPlay);
michael@0: }
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FMRadio)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIAudioChannelAgentCallback)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
michael@0: NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(FMRadio, DOMEventTargetHelper)
michael@0: NS_IMPL_RELEASE_INHERITED(FMRadio, DOMEventTargetHelper)
michael@0: 
michael@0: END_FMRADIO_NAMESPACE
michael@0: