void AudioChannelAgent::NotifyAudioChannelStateChanged()
{
if (mCallback != nullptr) {
AudioChannelService *service = AudioChannelService::GetAudioChannelService();
mCallback->CanPlayChanged(!service->GetMuted(this, !mVisible));
}
}
/* void setVisibilityState (in boolean visible); */
NS_IMETHODIMP AudioChannelAgent::SetVisibilityState(bool visible)
{
bool oldVisibility = mVisible;
mVisible = visible;
if (mIsRegToService && oldVisibility != mVisible && mCallback != nullptr) {
AudioChannelService *service = AudioChannelService::GetAudioChannelService();
mCallback->CanPlayChanged(!service->GetMuted(this, !mVisible));
}
return NS_OK;
}
/* boolean startPlaying (); */
NS_IMETHODIMP AudioChannelAgent::StartPlaying(bool *_retval)
{
AudioChannelService *service = AudioChannelService::GetAudioChannelService();
if (mAudioChannelType == AUDIO_AGENT_CHANNEL_ERROR ||
service == nullptr) {
return NS_ERROR_FAILURE;
}
service->RegisterAudioChannelAgent(this,
static_cast<AudioChannelType>(mAudioChannelType));
*_retval = !service->GetMuted(this, !mVisible);
mIsRegToService = true;
return NS_OK;
}