C++ (Cpp) AudioChannelService::GetState示例

示例#1

文件： AudioChannelAgent.cpp 项目： Balakrishnan-Vivek/gecko-dev

void AudioChannelAgent::NotifyAudioChannelStateChanged()
{
  nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();
  if (callback) {
    AudioChannelService *service = AudioChannelService::GetAudioChannelService();
    callback->CanPlayChanged(service->GetState(this, !mVisible));
  }
}

示例#2

文件： AudioChannelAgent.cpp 项目： Balakrishnan-Vivek/gecko-dev

/* void setVisibilityState (in boolean visible); */
NS_IMETHODIMP AudioChannelAgent::SetVisibilityState(bool visible)
{
  bool oldVisibility = mVisible;

  nsCOMPtr<nsIAudioChannelAgentCallback> callback = GetCallback();

  mVisible = visible;
  if (mIsRegToService && oldVisibility != mVisible && callback) {
    AudioChannelService *service = AudioChannelService::GetAudioChannelService();
    callback->CanPlayChanged(service->GetState(this, !mVisible));
  }
  return NS_OK;
}

示例#3

文件： AudioChannelAgent.cpp 项目： Balakrishnan-Vivek/gecko-dev

/* boolean startPlaying (); */
NS_IMETHODIMP AudioChannelAgent::StartPlaying(int32_t *_retval)
{
  AudioChannelService *service = AudioChannelService::GetAudioChannelService();
  if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
      service == nullptr || mIsRegToService) {
    return NS_ERROR_FAILURE;
  }

  service->RegisterAudioChannelAgent(this,
    static_cast<AudioChannel>(mAudioChannelType), mWithVideo);
  *_retval = service->GetState(this, !mVisible);
  mIsRegToService = true;
  return NS_OK;
}