1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/fmradio/FMRadio.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,414 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "mozilla/dom/FMRadio.h"
1.11 +#include "nsContentUtils.h"
1.12 +#include "mozilla/Hal.h"
1.13 +#include "mozilla/HalTypes.h"
1.14 +#include "mozilla/Preferences.h"
1.15 +#include "mozilla/dom/FMRadioBinding.h"
1.16 +#include "mozilla/dom/ContentChild.h"
1.17 +#include "mozilla/dom/PFMRadioChild.h"
1.18 +#include "mozilla/dom/FMRadioService.h"
1.19 +#include "DOMRequest.h"
1.20 +#include "nsDOMClassInfo.h"
1.21 +#include "nsIDocShell.h"
1.22 +#include "nsIInterfaceRequestorUtils.h"
1.23 +#include "nsIAudioManager.h"
1.24 +
1.25 +#undef LOG
1.26 +#define LOG(args...) FM_LOG("FMRadio", args)
1.27 +
1.28 +// The pref indicates if the device has an internal antenna.
1.29 +// If the pref is true, the antanna will be always available.
1.30 +#define DOM_FM_ANTENNA_INTERNAL_PREF "dom.fmradio.antenna.internal"
1.31 +
1.32 +using namespace mozilla::hal;
1.33 +using mozilla::Preferences;
1.34 +
1.35 +BEGIN_FMRADIO_NAMESPACE
1.36 +
1.37 +class FMRadioRequest MOZ_FINAL : public FMRadioReplyRunnable
1.38 + , public DOMRequest
1.39 +{
1.40 +public:
1.41 + NS_DECL_ISUPPORTS_INHERITED
1.42 +
1.43 + FMRadioRequest(nsPIDOMWindow* aWindow, FMRadio* aFMRadio)
1.44 + : DOMRequest(aWindow)
1.45 + , mType(FMRadioRequestArgs::T__None)
1.46 + {
1.47 + // |FMRadio| inherits from |nsIDOMEventTarget| and |nsISupportsWeakReference|
1.48 + // which both inherits from nsISupports, so |nsISupports| is an ambiguous
1.49 + // base of |FMRadio|, we have to cast |aFMRadio| to one of the base classes.
1.50 + mFMRadio = do_GetWeakReference(static_cast<nsIDOMEventTarget*>(aFMRadio));
1.51 + }
1.52 +
1.53 + FMRadioRequest(nsPIDOMWindow* aWindow, FMRadio* aFMRadio,
1.54 + FMRadioRequestArgs::Type aType)
1.55 + : DOMRequest(aWindow)
1.56 + {
1.57 + MOZ_ASSERT(aType >= FMRadioRequestArgs::T__None &&
1.58 + aType <= FMRadioRequestArgs::T__Last,
1.59 + "Wrong FMRadioRequestArgs in FMRadioRequest");
1.60 +
1.61 + mFMRadio = do_GetWeakReference(static_cast<nsIDOMEventTarget*>(aFMRadio));
1.62 + mType = aType;
1.63 + }
1.64 +
1.65 + ~FMRadioRequest() { }
1.66 +
1.67 + NS_IMETHODIMP
1.68 + Run()
1.69 + {
1.70 + MOZ_ASSERT(NS_IsMainThread(), "Wrong thread!");
1.71 +
1.72 + nsCOMPtr<nsIDOMEventTarget> target = do_QueryReferent(mFMRadio);
1.73 + if (!target) {
1.74 + return NS_OK;
1.75 + }
1.76 +
1.77 + FMRadio* fmRadio = static_cast<FMRadio*>(
1.78 + static_cast<nsIDOMEventTarget*>(target));
1.79 +
1.80 + if (fmRadio->mIsShutdown) {
1.81 + return NS_OK;
1.82 + }
1.83 +
1.84 + switch (mResponseType.type()) {
1.85 + case FMRadioResponseType::TErrorResponse:
1.86 + FireError(mResponseType.get_ErrorResponse().error());
1.87 + break;
1.88 + case FMRadioResponseType::TSuccessResponse:
1.89 + if (mType == FMRadioRequestArgs::TEnableRequestArgs) {
1.90 + fmRadio->EnableAudioChannelAgent();
1.91 + }
1.92 +
1.93 + FireSuccess(JS::UndefinedHandleValue);
1.94 + break;
1.95 + default:
1.96 + MOZ_CRASH();
1.97 + }
1.98 +
1.99 + return NS_OK;
1.100 + }
1.101 +
1.102 +private:
1.103 + FMRadioRequestArgs::Type mType;
1.104 + nsWeakPtr mFMRadio;
1.105 +};
1.106 +
1.107 +NS_IMPL_ISUPPORTS_INHERITED0(FMRadioRequest, DOMRequest)
1.108 +
1.109 +FMRadio::FMRadio()
1.110 + : mHeadphoneState(SWITCH_STATE_OFF)
1.111 + , mAudioChannelAgentEnabled(false)
1.112 + , mHasInternalAntenna(false)
1.113 + , mIsShutdown(false)
1.114 +{
1.115 + LOG("FMRadio is initialized.");
1.116 +
1.117 + SetIsDOMBinding();
1.118 +}
1.119 +
1.120 +FMRadio::~FMRadio()
1.121 +{
1.122 +}
1.123 +
1.124 +void
1.125 +FMRadio::Init(nsPIDOMWindow *aWindow)
1.126 +{
1.127 + BindToOwner(aWindow);
1.128 +
1.129 + IFMRadioService::Singleton()->AddObserver(this);
1.130 +
1.131 + mHasInternalAntenna = Preferences::GetBool(DOM_FM_ANTENNA_INTERNAL_PREF,
1.132 + /* default = */ false);
1.133 + if (mHasInternalAntenna) {
1.134 + LOG("We have an internal antenna.");
1.135 + } else {
1.136 + mHeadphoneState = GetCurrentSwitchState(SWITCH_HEADPHONES);
1.137 + RegisterSwitchObserver(SWITCH_HEADPHONES, this);
1.138 + }
1.139 +
1.140 + nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(GetOwner());
1.141 + NS_ENSURE_TRUE_VOID(target);
1.142 + target->AddSystemEventListener(NS_LITERAL_STRING("visibilitychange"), this,
1.143 + /* useCapture = */ true,
1.144 + /* wantsUntrusted = */ false);
1.145 +
1.146 +
1.147 + // All of the codes below are for AudioChannel. We can directly return here
1.148 + // if preferences doesn't enable AudioChannelService.
1.149 + NS_ENSURE_TRUE_VOID(Preferences::GetBool("media.useAudioChannelService"));
1.150 +
1.151 + nsCOMPtr<nsIAudioChannelAgent> audioChannelAgent =
1.152 + do_CreateInstance("@mozilla.org/audiochannelagent;1");
1.153 + NS_ENSURE_TRUE_VOID(audioChannelAgent);
1.154 +
1.155 + audioChannelAgent->InitWithWeakCallback(
1.156 + GetOwner(),
1.157 + nsIAudioChannelAgent::AUDIO_AGENT_CHANNEL_CONTENT,
1.158 + this);
1.159 +
1.160 + nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
1.161 + NS_ENSURE_TRUE_VOID(docshell);
1.162 +
1.163 + bool isActive = false;
1.164 + docshell->GetIsActive(&isActive);
1.165 + audioChannelAgent->SetVisibilityState(isActive);
1.166 +
1.167 + // Once all necessary resources are got successfully, we just enabled
1.168 + // mAudioChannelAgent.
1.169 + mAudioChannelAgent = audioChannelAgent;
1.170 +}
1.171 +
1.172 +void
1.173 +FMRadio::Shutdown()
1.174 +{
1.175 + IFMRadioService::Singleton()->RemoveObserver(this);
1.176 +
1.177 + if (!mHasInternalAntenna) {
1.178 + UnregisterSwitchObserver(SWITCH_HEADPHONES, this);
1.179 + }
1.180 +
1.181 + nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(GetOwner());
1.182 + NS_ENSURE_TRUE_VOID(target);
1.183 + target->RemoveSystemEventListener(NS_LITERAL_STRING("visibilitychange"), this,
1.184 + /* useCapture = */ true);
1.185 +
1.186 + mIsShutdown = true;
1.187 +}
1.188 +
1.189 +JSObject*
1.190 +FMRadio::WrapObject(JSContext* aCx)
1.191 +{
1.192 + return FMRadioBinding::Wrap(aCx, this);
1.193 +}
1.194 +
1.195 +void
1.196 +FMRadio::Notify(const SwitchEvent& aEvent)
1.197 +{
1.198 + MOZ_ASSERT(!mHasInternalAntenna);
1.199 +
1.200 + if (mHeadphoneState != aEvent.status()) {
1.201 + mHeadphoneState = aEvent.status();
1.202 +
1.203 + DispatchTrustedEvent(NS_LITERAL_STRING("antennaavailablechange"));
1.204 + }
1.205 +}
1.206 +
1.207 +void
1.208 +FMRadio::Notify(const FMRadioEventType& aType)
1.209 +{
1.210 + switch (aType) {
1.211 + case FrequencyChanged:
1.212 + DispatchTrustedEvent(NS_LITERAL_STRING("frequencychange"));
1.213 + break;
1.214 + case EnabledChanged:
1.215 + if (Enabled()) {
1.216 + DispatchTrustedEvent(NS_LITERAL_STRING("enabled"));
1.217 + } else {
1.218 + if (mAudioChannelAgentEnabled) {
1.219 + mAudioChannelAgent->StopPlaying();
1.220 + mAudioChannelAgentEnabled = false;
1.221 + }
1.222 +
1.223 + DispatchTrustedEvent(NS_LITERAL_STRING("disabled"));
1.224 + }
1.225 + break;
1.226 + default:
1.227 + MOZ_CRASH();
1.228 + }
1.229 +}
1.230 +
1.231 +/* static */
1.232 +bool
1.233 +FMRadio::Enabled()
1.234 +{
1.235 + return IFMRadioService::Singleton()->IsEnabled();
1.236 +}
1.237 +
1.238 +bool
1.239 +FMRadio::AntennaAvailable() const
1.240 +{
1.241 + return mHasInternalAntenna ? true : (mHeadphoneState != SWITCH_STATE_OFF) &&
1.242 + (mHeadphoneState != SWITCH_STATE_UNKNOWN);
1.243 +}
1.244 +
1.245 +Nullable<double>
1.246 +FMRadio::GetFrequency() const
1.247 +{
1.248 + return Enabled() ?
1.249 + Nullable<double>(IFMRadioService::Singleton()->GetFrequency()) :
1.250 + Nullable<double>();
1.251 +}
1.252 +
1.253 +double
1.254 +FMRadio::FrequencyUpperBound() const
1.255 +{
1.256 + return IFMRadioService::Singleton()->GetFrequencyUpperBound();
1.257 +}
1.258 +
1.259 +double
1.260 +FMRadio::FrequencyLowerBound() const
1.261 +{
1.262 + return IFMRadioService::Singleton()->GetFrequencyLowerBound();
1.263 +}
1.264 +
1.265 +double
1.266 +FMRadio::ChannelWidth() const
1.267 +{
1.268 + return IFMRadioService::Singleton()->GetChannelWidth();
1.269 +}
1.270 +
1.271 +already_AddRefed<DOMRequest>
1.272 +FMRadio::Enable(double aFrequency)
1.273 +{
1.274 + nsCOMPtr<nsPIDOMWindow> win = GetOwner();
1.275 + if (!win) {
1.276 + return nullptr;
1.277 + }
1.278 +
1.279 + nsRefPtr<FMRadioRequest> r =
1.280 + new FMRadioRequest(win, this, FMRadioRequestArgs::TEnableRequestArgs);
1.281 + IFMRadioService::Singleton()->Enable(aFrequency, r);
1.282 +
1.283 + return r.forget();
1.284 +}
1.285 +
1.286 +already_AddRefed<DOMRequest>
1.287 +FMRadio::Disable()
1.288 +{
1.289 + nsCOMPtr<nsPIDOMWindow> win = GetOwner();
1.290 + if (!win) {
1.291 + return nullptr;
1.292 + }
1.293 +
1.294 + nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
1.295 + IFMRadioService::Singleton()->Disable(r);
1.296 +
1.297 + return r.forget();
1.298 +}
1.299 +
1.300 +already_AddRefed<DOMRequest>
1.301 +FMRadio::SetFrequency(double aFrequency)
1.302 +{
1.303 + nsCOMPtr<nsPIDOMWindow> win = GetOwner();
1.304 + if (!win) {
1.305 + return nullptr;
1.306 + }
1.307 +
1.308 + nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
1.309 + IFMRadioService::Singleton()->SetFrequency(aFrequency, r);
1.310 +
1.311 + return r.forget();
1.312 +}
1.313 +
1.314 +already_AddRefed<DOMRequest>
1.315 +FMRadio::SeekUp()
1.316 +{
1.317 + nsCOMPtr<nsPIDOMWindow> win = GetOwner();
1.318 + if (!win) {
1.319 + return nullptr;
1.320 + }
1.321 +
1.322 + nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
1.323 + IFMRadioService::Singleton()->Seek(FM_RADIO_SEEK_DIRECTION_UP, r);
1.324 +
1.325 + return r.forget();
1.326 +}
1.327 +
1.328 +already_AddRefed<DOMRequest>
1.329 +FMRadio::SeekDown()
1.330 +{
1.331 + nsCOMPtr<nsPIDOMWindow> win = GetOwner();
1.332 + if (!win) {
1.333 + return nullptr;
1.334 + }
1.335 +
1.336 + nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
1.337 + IFMRadioService::Singleton()->Seek(FM_RADIO_SEEK_DIRECTION_DOWN, r);
1.338 +
1.339 + return r.forget();
1.340 +}
1.341 +
1.342 +already_AddRefed<DOMRequest>
1.343 +FMRadio::CancelSeek()
1.344 +{
1.345 + nsCOMPtr<nsPIDOMWindow> win = GetOwner();
1.346 + if (!win) {
1.347 + return nullptr;
1.348 + }
1.349 +
1.350 + nsRefPtr<FMRadioRequest> r = new FMRadioRequest(win, this);
1.351 + IFMRadioService::Singleton()->CancelSeek(r);
1.352 +
1.353 + return r.forget();
1.354 +}
1.355 +
1.356 +NS_IMETHODIMP
1.357 +FMRadio::HandleEvent(nsIDOMEvent* aEvent)
1.358 +{
1.359 + nsAutoString type;
1.360 + aEvent->GetType(type);
1.361 +
1.362 + if (!type.EqualsLiteral("visibilitychange")) {
1.363 + return NS_ERROR_FAILURE;
1.364 + }
1.365 +
1.366 + nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
1.367 + NS_ENSURE_TRUE(docshell, NS_ERROR_FAILURE);
1.368 +
1.369 + bool isActive = false;
1.370 + docshell->GetIsActive(&isActive);
1.371 +
1.372 + mAudioChannelAgent->SetVisibilityState(isActive);
1.373 + return NS_OK;
1.374 +}
1.375 +
1.376 +void
1.377 +FMRadio::EnableAudioChannelAgent()
1.378 +{
1.379 + NS_ENSURE_TRUE_VOID(mAudioChannelAgent);
1.380 +
1.381 + int32_t playingState = 0;
1.382 + mAudioChannelAgent->StartPlaying(&playingState);
1.383 + SetCanPlay(playingState == AudioChannelState::AUDIO_CHANNEL_STATE_NORMAL);
1.384 +
1.385 + mAudioChannelAgentEnabled = true;
1.386 +}
1.387 +
1.388 +NS_IMETHODIMP
1.389 +FMRadio::CanPlayChanged(int32_t aCanPlay)
1.390 +{
1.391 + SetCanPlay(aCanPlay == AudioChannelState::AUDIO_CHANNEL_STATE_NORMAL);
1.392 + return NS_OK;
1.393 +}
1.394 +
1.395 +NS_IMETHODIMP
1.396 +FMRadio::WindowVolumeChanged()
1.397 +{
1.398 + return NS_ERROR_NOT_IMPLEMENTED;
1.399 +}
1.400 +
1.401 +void
1.402 +FMRadio::SetCanPlay(bool aCanPlay)
1.403 +{
1.404 + IFMRadioService::Singleton()->EnableAudio(aCanPlay);
1.405 +}
1.406 +
1.407 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FMRadio)
1.408 + NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
1.409 + NS_INTERFACE_MAP_ENTRY(nsIAudioChannelAgentCallback)
1.410 + NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
1.411 +NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
1.412 +
1.413 +NS_IMPL_ADDREF_INHERITED(FMRadio, DOMEventTargetHelper)
1.414 +NS_IMPL_RELEASE_INHERITED(FMRadio, DOMEventTargetHelper)
1.415 +
1.416 +END_FMRADIO_NAMESPACE
1.417 +
