1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/audiochannel/AudioChannelAgent.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,205 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#include "AudioChannelAgent.h"
1.9 +#include "AudioChannelCommon.h"
1.10 +#include "AudioChannelService.h"
1.11 +#include "nsIDOMWindow.h"
1.12 +#include "nsPIDOMWindow.h"
1.13 +#include "nsXULAppAPI.h"
1.14 +
1.15 +using namespace mozilla::dom;
1.16 +
1.17 +NS_IMPL_CYCLE_COLLECTION(AudioChannelAgent, mWindow, mCallback)
1.18 +
1.19 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AudioChannelAgent)
1.20 + NS_INTERFACE_MAP_ENTRY(nsIAudioChannelAgent)
1.21 + NS_INTERFACE_MAP_ENTRY(nsISupports)
1.22 +NS_INTERFACE_MAP_END
1.23 +
1.24 +NS_IMPL_CYCLE_COLLECTING_ADDREF(AudioChannelAgent)
1.25 +NS_IMPL_CYCLE_COLLECTING_RELEASE(AudioChannelAgent)
1.26 +
1.27 +AudioChannelAgent::AudioChannelAgent()
1.28 + : mAudioChannelType(AUDIO_AGENT_CHANNEL_ERROR)
1.29 + , mIsRegToService(false)
1.30 + , mVisible(true)
1.31 + , mWithVideo(false)
1.32 +{
1.33 +}
1.34 +
1.35 +AudioChannelAgent::~AudioChannelAgent()
1.36 +{
1.37 + if (mIsRegToService) {
1.38 + StopPlaying();
1.39 + }
1.40 +}
1.41 +
1.42 +/* readonly attribute long audioChannelType; */
1.43 +NS_IMETHODIMP AudioChannelAgent::GetAudioChannelType(int32_t *aAudioChannelType)
1.44 +{
1.45 + *aAudioChannelType = mAudioChannelType;
1.46 + return NS_OK;
1.47 +}
1.48 +
1.49 +/* boolean init (in nsIDOMWindow window, in long channelType,
1.50 + * in nsIAudioChannelAgentCallback callback); */
1.51 +NS_IMETHODIMP
1.52 +AudioChannelAgent::Init(nsIDOMWindow* aWindow, int32_t aChannelType,
1.53 + nsIAudioChannelAgentCallback *aCallback)
1.54 +{
1.55 + return InitInternal(aWindow, aChannelType, aCallback,
1.56 + /* useWeakRef = */ false);
1.57 +}
1.58 +
1.59 +/* boolean initWithWeakCallback (in nsIDOMWindow window, in long channelType,
1.60 + * in nsIAudioChannelAgentCallback callback); */
1.61 +NS_IMETHODIMP
1.62 +AudioChannelAgent::InitWithWeakCallback(nsIDOMWindow* aWindow,
1.63 + int32_t aChannelType,
1.64 + nsIAudioChannelAgentCallback *aCallback)
1.65 +{
1.66 + return InitInternal(aWindow, aChannelType, aCallback,
1.67 + /* useWeakRef = */ true);
1.68 +}
1.69 +
1.70 +/* void initWithVideo(in nsIDOMWindow window, in long channelType,
1.71 + * in nsIAudioChannelAgentCallback callback, in boolean weak); */
1.72 +NS_IMETHODIMP
1.73 +AudioChannelAgent::InitWithVideo(nsIDOMWindow* aWindow, int32_t aChannelType,
1.74 + nsIAudioChannelAgentCallback *aCallback,
1.75 + bool aUseWeakRef)
1.76 +{
1.77 + return InitInternal(aWindow, aChannelType, aCallback, aUseWeakRef,
1.78 + /* withVideo = */ true);
1.79 +}
1.80 +
1.81 +nsresult
1.82 +AudioChannelAgent::InitInternal(nsIDOMWindow* aWindow, int32_t aChannelType,
1.83 + nsIAudioChannelAgentCallback *aCallback,
1.84 + bool aUseWeakRef, bool aWithVideo)
1.85 +{
1.86 + // We need the window only for IPC.
1.87 + MOZ_ASSERT(aWindow || XRE_GetProcessType() == GeckoProcessType_Default);
1.88 +
1.89 + // We syncd the enum of channel type between nsIAudioChannelAgent.idl and
1.90 + // AudioChannelBinding.h the same.
1.91 + MOZ_ASSERT(int(AUDIO_AGENT_CHANNEL_NORMAL) == int(AudioChannel::Normal) &&
1.92 + int(AUDIO_AGENT_CHANNEL_CONTENT) == int(AudioChannel::Content) &&
1.93 + int(AUDIO_AGENT_CHANNEL_NOTIFICATION) == int(AudioChannel::Notification) &&
1.94 + int(AUDIO_AGENT_CHANNEL_ALARM) == int(AudioChannel::Alarm) &&
1.95 + int(AUDIO_AGENT_CHANNEL_TELEPHONY) == int(AudioChannel::Telephony) &&
1.96 + int(AUDIO_AGENT_CHANNEL_RINGER) == int(AudioChannel::Ringer) &&
1.97 + int(AUDIO_AGENT_CHANNEL_PUBLICNOTIFICATION) == int(AudioChannel::Publicnotification),
1.98 + "Enum of channel on nsIAudioChannelAgent.idl should be the same with AudioChannelBinding.h");
1.99 +
1.100 + if (mAudioChannelType != AUDIO_AGENT_CHANNEL_ERROR ||
1.101 + aChannelType > AUDIO_AGENT_CHANNEL_PUBLICNOTIFICATION ||
1.102 + aChannelType < AUDIO_AGENT_CHANNEL_NORMAL) {
1.103 + return NS_ERROR_FAILURE;
1.104 + }
1.105 +
1.106 + mWindow = aWindow;
1.107 + mAudioChannelType = aChannelType;
1.108 +
1.109 + if (aUseWeakRef) {
1.110 + mWeakCallback = do_GetWeakReference(aCallback);
1.111 + } else {
1.112 + mCallback = aCallback;
1.113 + }
1.114 +
1.115 + mWithVideo = aWithVideo;
1.116 +
1.117 + return NS_OK;
1.118 +}
1.119 +
1.120 +/* boolean startPlaying (); */
1.121 +NS_IMETHODIMP AudioChannelAgent::StartPlaying(int32_t *_retval)
1.122 +{
1.123 + AudioChannelService *service = AudioChannelService::GetAudioChannelService();
1.124 + if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
1.125 + service == nullptr || mIsRegToService) {
1.126 + return NS_ERROR_FAILURE;
1.127 + }
1.128 +
1.129 + service->RegisterAudioChannelAgent(this,
1.130 + static_cast<AudioChannel>(mAudioChannelType), mWithVideo);
1.131 + *_retval = service->GetState(this, !mVisible);
1.132 + mIsRegToService = true;
1.133 + return NS_OK;
1.134 +}
1.135 +
1.136 +/* void stopPlaying (); */
1.137 +NS_IMETHODIMP AudioChannelAgent::StopPlaying(void)
1.138 +{
1.139 + if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
1.140 + !mIsRegToService) {
1.141 + return NS_ERROR_FAILURE;
1.142 + }
1.143 +
1.144 + AudioChannelService *service = AudioChannelService::GetAudioChannelService();
1.145 + service->UnregisterAudioChannelAgent(this);
1.146 + mIsRegToService = false;
1.147 + return NS_OK;
1.148 +}
1.149 +
1.150 +/* void setVisibilityState (in boolean visible); */
1.151 +NS_IMETHODIMP AudioChannelAgent::SetVisibilityState(bool visible)
1.152 +{
1.153 + bool oldVisibility = mVisible;
1.154 +
1.155 + nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
1.156 +
1.157 + mVisible = visible;
1.158 + if (mIsRegToService && oldVisibility != mVisible && callback) {
1.159 + AudioChannelService *service = AudioChannelService::GetAudioChannelService();
1.160 + callback->CanPlayChanged(service->GetState(this, !mVisible));
1.161 + }
1.162 + return NS_OK;
1.163 +}
1.164 +
1.165 +void AudioChannelAgent::NotifyAudioChannelStateChanged()
1.166 +{
1.167 + nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
1.168 + if (callback) {
1.169 + AudioChannelService *service = AudioChannelService::GetAudioChannelService();
1.170 + callback->CanPlayChanged(service->GetState(this, !mVisible));
1.171 + }
1.172 +}
1.173 +
1.174 +already_AddRefed<nsIAudioChannelAgentCallback>
1.175 +AudioChannelAgent::GetCallback()
1.176 +{
1.177 + nsCOMPtr<nsIAudioChannelAgentCallback> callback = mCallback;
1.178 + if (!callback) {
1.179 + callback = do_QueryReferent(mWeakCallback);
1.180 + }
1.181 + return callback.forget();
1.182 +}
1.183 +
1.184 +void
1.185 +AudioChannelAgent::WindowVolumeChanged()
1.186 +{
1.187 + nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
1.188 + if (!callback) {
1.189 + return;
1.190 + }
1.191 +
1.192 + callback->WindowVolumeChanged();
1.193 +}
1.194 +
1.195 +NS_IMETHODIMP
1.196 +AudioChannelAgent::GetWindowVolume(float* aVolume)
1.197 +{
1.198 + NS_ENSURE_ARG_POINTER(aVolume);
1.199 +
1.200 + nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(mWindow);
1.201 + if (!win) {
1.202 + *aVolume = 1.0f;
1.203 + return NS_OK;
1.204 + }
1.205 +
1.206 + *aVolume = win->GetAudioGlobalVolume();
1.207 + return NS_OK;
1.208 +}
