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 "AudioChannelAgent.h"
michael@0: #include "AudioChannelCommon.h"
michael@0: #include "AudioChannelService.h"
michael@0: #include "nsIDOMWindow.h"
michael@0: #include "nsPIDOMWindow.h"
michael@0: #include "nsXULAppAPI.h"
michael@0: 
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION(AudioChannelAgent, mWindow, mCallback)
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AudioChannelAgent)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIAudioChannelAgent)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsISupports)
michael@0: NS_INTERFACE_MAP_END
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTING_ADDREF(AudioChannelAgent)
michael@0: NS_IMPL_CYCLE_COLLECTING_RELEASE(AudioChannelAgent)
michael@0: 
michael@0: AudioChannelAgent::AudioChannelAgent()
michael@0:   : mAudioChannelType(AUDIO_AGENT_CHANNEL_ERROR)
michael@0:   , mIsRegToService(false)
michael@0:   , mVisible(true)
michael@0:   , mWithVideo(false)
michael@0: {
michael@0: }
michael@0: 
michael@0: AudioChannelAgent::~AudioChannelAgent()
michael@0: {
michael@0:   if (mIsRegToService) {
michael@0:     StopPlaying();
michael@0:   }
michael@0: }
michael@0: 
michael@0: /* readonly attribute long audioChannelType; */
michael@0: NS_IMETHODIMP AudioChannelAgent::GetAudioChannelType(int32_t *aAudioChannelType)
michael@0: {
michael@0:   *aAudioChannelType = mAudioChannelType;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* boolean init (in nsIDOMWindow window, in long channelType,
michael@0:  *               in nsIAudioChannelAgentCallback callback); */
michael@0: NS_IMETHODIMP
michael@0: AudioChannelAgent::Init(nsIDOMWindow* aWindow, int32_t aChannelType,
michael@0:                         nsIAudioChannelAgentCallback *aCallback)
michael@0: {
michael@0:   return InitInternal(aWindow, aChannelType, aCallback,
michael@0:                       /* useWeakRef = */ false);
michael@0: }
michael@0: 
michael@0: /* boolean initWithWeakCallback (in nsIDOMWindow window, in long channelType,
michael@0:  *                               in nsIAudioChannelAgentCallback callback); */
michael@0: NS_IMETHODIMP
michael@0: AudioChannelAgent::InitWithWeakCallback(nsIDOMWindow* aWindow,
michael@0:                                         int32_t aChannelType,
michael@0:                                         nsIAudioChannelAgentCallback *aCallback)
michael@0: {
michael@0:   return InitInternal(aWindow, aChannelType, aCallback,
michael@0:                       /* useWeakRef = */ true);
michael@0: }
michael@0: 
michael@0: /* void initWithVideo(in nsIDOMWindow window, in long channelType,
michael@0:  *                    in nsIAudioChannelAgentCallback callback, in boolean weak); */
michael@0: NS_IMETHODIMP
michael@0: AudioChannelAgent::InitWithVideo(nsIDOMWindow* aWindow, int32_t aChannelType,
michael@0:                                  nsIAudioChannelAgentCallback *aCallback,
michael@0:                                  bool aUseWeakRef)
michael@0: {
michael@0:   return InitInternal(aWindow, aChannelType, aCallback, aUseWeakRef,
michael@0:                       /* withVideo = */ true);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: AudioChannelAgent::InitInternal(nsIDOMWindow* aWindow, int32_t aChannelType,
michael@0:                                 nsIAudioChannelAgentCallback *aCallback,
michael@0:                                 bool aUseWeakRef, bool aWithVideo)
michael@0: {
michael@0:   // We need the window only for IPC.
michael@0:   MOZ_ASSERT(aWindow || XRE_GetProcessType() == GeckoProcessType_Default);
michael@0: 
michael@0:   // We syncd the enum of channel type between nsIAudioChannelAgent.idl and
michael@0:   // AudioChannelBinding.h the same.
michael@0:   MOZ_ASSERT(int(AUDIO_AGENT_CHANNEL_NORMAL) == int(AudioChannel::Normal) &&
michael@0:              int(AUDIO_AGENT_CHANNEL_CONTENT) == int(AudioChannel::Content) &&
michael@0:              int(AUDIO_AGENT_CHANNEL_NOTIFICATION) == int(AudioChannel::Notification) &&
michael@0:              int(AUDIO_AGENT_CHANNEL_ALARM) == int(AudioChannel::Alarm) &&
michael@0:              int(AUDIO_AGENT_CHANNEL_TELEPHONY) == int(AudioChannel::Telephony) &&
michael@0:              int(AUDIO_AGENT_CHANNEL_RINGER) == int(AudioChannel::Ringer) &&
michael@0:              int(AUDIO_AGENT_CHANNEL_PUBLICNOTIFICATION) == int(AudioChannel::Publicnotification),
michael@0:              "Enum of channel on nsIAudioChannelAgent.idl should be the same with AudioChannelBinding.h");
michael@0: 
michael@0:   if (mAudioChannelType != AUDIO_AGENT_CHANNEL_ERROR ||
michael@0:       aChannelType > AUDIO_AGENT_CHANNEL_PUBLICNOTIFICATION ||
michael@0:       aChannelType < AUDIO_AGENT_CHANNEL_NORMAL) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   mWindow = aWindow;
michael@0:   mAudioChannelType = aChannelType;
michael@0: 
michael@0:   if (aUseWeakRef) {
michael@0:     mWeakCallback = do_GetWeakReference(aCallback);
michael@0:   } else {
michael@0:     mCallback = aCallback;
michael@0:   }
michael@0: 
michael@0:   mWithVideo = aWithVideo;
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* boolean startPlaying (); */
michael@0: NS_IMETHODIMP AudioChannelAgent::StartPlaying(int32_t *_retval)
michael@0: {
michael@0:   AudioChannelService *service = AudioChannelService::GetAudioChannelService();
michael@0:   if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
michael@0:       service == nullptr || mIsRegToService) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   service->RegisterAudioChannelAgent(this,
michael@0:     static_cast<AudioChannel>(mAudioChannelType), mWithVideo);
michael@0:   *_retval = service->GetState(this, !mVisible);
michael@0:   mIsRegToService = true;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* void stopPlaying (); */
michael@0: NS_IMETHODIMP AudioChannelAgent::StopPlaying(void)
michael@0: {
michael@0:   if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
michael@0:       !mIsRegToService) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   AudioChannelService *service = AudioChannelService::GetAudioChannelService();
michael@0:   service->UnregisterAudioChannelAgent(this);
michael@0:   mIsRegToService = false;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* void setVisibilityState (in boolean visible); */
michael@0: NS_IMETHODIMP AudioChannelAgent::SetVisibilityState(bool visible)
michael@0: {
michael@0:   bool oldVisibility = mVisible;
michael@0: 
michael@0:   nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
michael@0: 
michael@0:   mVisible = visible;
michael@0:   if (mIsRegToService && oldVisibility != mVisible && callback) {
michael@0:     AudioChannelService *service = AudioChannelService::GetAudioChannelService();
michael@0:     callback->CanPlayChanged(service->GetState(this, !mVisible));
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void AudioChannelAgent::NotifyAudioChannelStateChanged()
michael@0: {
michael@0:   nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
michael@0:   if (callback) {
michael@0:     AudioChannelService *service = AudioChannelService::GetAudioChannelService();
michael@0:     callback->CanPlayChanged(service->GetState(this, !mVisible));
michael@0:   }
michael@0: }
michael@0: 
michael@0: already_AddRefed<nsIAudioChannelAgentCallback>
michael@0: AudioChannelAgent::GetCallback()
michael@0: {
michael@0:   nsCOMPtr<nsIAudioChannelAgentCallback> callback = mCallback;
michael@0:   if (!callback) {
michael@0:     callback = do_QueryReferent(mWeakCallback);
michael@0:   }
michael@0:   return callback.forget();
michael@0: }
michael@0: 
michael@0: void
michael@0: AudioChannelAgent::WindowVolumeChanged()
michael@0: {
michael@0:   nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
michael@0:   if (!callback) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   callback->WindowVolumeChanged();
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: AudioChannelAgent::GetWindowVolume(float* aVolume)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aVolume);
michael@0: 
michael@0:   nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(mWindow);
michael@0:   if (!win) {
michael@0:     *aVolume = 1.0f;
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   *aVolume = win->GetAudioGlobalVolume();
michael@0:   return NS_OK;
michael@0: }