зеркало из https://github.com/mozilla/gecko-dev.git
118 строки
3.9 KiB
C++
118 строки
3.9 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "AudioChannelAgent.h"
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#include "AudioChannelCommon.h"
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#include "AudioChannelService.h"
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using namespace mozilla::dom;
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NS_IMPL_ISUPPORTS1(AudioChannelAgent, nsIAudioChannelAgent)
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AudioChannelAgent::AudioChannelAgent()
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: mCallback(nullptr)
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, mAudioChannelType(AUDIO_AGENT_CHANNEL_ERROR)
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, mIsRegToService(false)
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, mVisible(true)
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{
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}
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AudioChannelAgent::~AudioChannelAgent()
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{
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if (mIsRegToService) {
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StopPlaying();
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}
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}
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/* readonly attribute long audioChannelType; */
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NS_IMETHODIMP AudioChannelAgent::GetAudioChannelType(int32_t *aAudioChannelType)
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{
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*aAudioChannelType = mAudioChannelType;
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return NS_OK;
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}
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/* boolean init (in long channelType); */
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NS_IMETHODIMP AudioChannelAgent::Init(int32_t channelType, nsIAudioChannelAgentCallback *callback)
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{
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// We syncd the enum of channel type between nsIAudioChannelAgent.idl and
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// AudioChannelCommon.h the same.
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MOZ_STATIC_ASSERT(static_cast<AudioChannelType>(AUDIO_AGENT_CHANNEL_NORMAL) ==
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AUDIO_CHANNEL_NORMAL &&
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static_cast<AudioChannelType>(AUDIO_AGENT_CHANNEL_CONTENT) ==
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AUDIO_CHANNEL_CONTENT &&
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static_cast<AudioChannelType>(AUDIO_AGENT_CHANNEL_NOTIFICATION) ==
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AUDIO_CHANNEL_NOTIFICATION &&
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static_cast<AudioChannelType>(AUDIO_AGENT_CHANNEL_ALARM) ==
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AUDIO_CHANNEL_ALARM &&
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static_cast<AudioChannelType>(AUDIO_AGENT_CHANNEL_TELEPHONY) ==
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AUDIO_CHANNEL_TELEPHONY &&
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static_cast<AudioChannelType>(AUDIO_AGENT_CHANNEL_RINGER) ==
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AUDIO_CHANNEL_RINGER &&
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static_cast<AudioChannelType>(AUDIO_AGENT_CHANNEL_PUBLICNOTIFICATION) ==
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AUDIO_CHANNEL_PUBLICNOTIFICATION,
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"Enum of channel on nsIAudioChannelAgent.idl should be the same with AudioChannelCommon.h");
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if (mAudioChannelType != AUDIO_AGENT_CHANNEL_ERROR ||
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channelType > AUDIO_AGENT_CHANNEL_PUBLICNOTIFICATION ||
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channelType < AUDIO_AGENT_CHANNEL_NORMAL) {
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return NS_ERROR_FAILURE;
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}
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mAudioChannelType = channelType;
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mCallback = callback;
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return NS_OK;
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}
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/* boolean startPlaying (); */
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NS_IMETHODIMP AudioChannelAgent::StartPlaying(bool *_retval)
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{
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AudioChannelService *service = AudioChannelService::GetAudioChannelService();
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if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
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service == nullptr || mIsRegToService) {
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return NS_ERROR_FAILURE;
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}
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service->RegisterAudioChannelAgent(this,
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static_cast<AudioChannelType>(mAudioChannelType));
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*_retval = !service->GetMuted(this, !mVisible);
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mIsRegToService = true;
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return NS_OK;
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}
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/* void stopPlaying (); */
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NS_IMETHODIMP AudioChannelAgent::StopPlaying(void)
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{
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if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
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!mIsRegToService) {
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return NS_ERROR_FAILURE;
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}
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AudioChannelService *service = AudioChannelService::GetAudioChannelService();
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service->UnregisterAudioChannelAgent(this);
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mIsRegToService = false;
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return NS_OK;
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}
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/* void setVisibilityState (in boolean visible); */
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NS_IMETHODIMP AudioChannelAgent::SetVisibilityState(bool visible)
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{
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bool oldVisibility = mVisible;
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mVisible = visible;
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if (mIsRegToService && oldVisibility != mVisible && mCallback != nullptr) {
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AudioChannelService *service = AudioChannelService::GetAudioChannelService();
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mCallback->CanPlayChanged(!service->GetMuted(this, !mVisible));
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}
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return NS_OK;
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}
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void AudioChannelAgent::NotifyAudioChannelStateChanged()
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{
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if (mCallback != nullptr) {
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AudioChannelService *service = AudioChannelService::GetAudioChannelService();
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mCallback->CanPlayChanged(!service->GetMuted(this, !mVisible));
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}
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}
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