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