Audio Manager API Sample Reference for voice session start and stop
This Section demonstrates how to use the Audio Manager API for voice session start and stop.
1. Get the AudioFactory instance
auto &audioFactory = audioFactory::getInstance();
2. Get the AudioManager object and check for audio subsystem Readiness
std::promise<ServiceStatus> prom{};
audioManager = audioFactory.getAudioManager([&prom](ServiceStatus serviceStatus) {
prom.set_value(serviceStatus);
});
if (!audioManager) {
std::cout << "Failed to get AudioManager object" << std::endl;
return;
}
ServiceStatus managerStatus = audioManager->getServiceStatus();
if (managerStatus != ServiceStatus::SERVICE_AVAILABLE) {
std::cout << "\nAudio subsystem is not ready, Please wait ..." << std::endl;
managerStatus = prom.get_future().get();
}
if (managerStatus == ServiceStatus::SERVICE_AVAILABLE) {
std::cout << "Audio Subsytem is Ready << std::endl;
} else {
std::cout << "ERROR - Unable to initialize audio subsystem" << std::endl;
return;
}
3. Create an Audio Stream (Voice Call Session)
void createStreamCallback(std::shared_ptr<IAudioStream> &stream, ErrorCode error)
{
if (error != ErrorCode::SUCCESS) {
std::cout << "createStream() returned with error " << static_cast<unsigned int>(error)
<< std::endl;
return;
}
std::cout << "createStream() succeeded." << std::endl;
audioVoiceStream = std::dynamic_pointer_cast<IAudioVoiceStream>(stream);
}
StreamConfig config;
config.type = StreamType::VOICE_CALL;
config.slotId = DEFAULT_SLOT_ID;
config.sampleRate = 16000;
config.format = AudioFormat::PCM_16BIT_SIGNED;
config.channelTypeMask = ChannelType::LEFT;
config.deviceTypes.emplace_back(DeviceType::DEVICE_TYPE_SPEAKER);
status = audioManager->createStream(config, createStreamCallback);
4. Start Created Audio Stream (Voice Call Session)
void startAudioCallback(ErrorCode error)
{
if (error != ErrorCode::SUCCESS) {
std::cout << "startAudio() returned with error " << static_cast<unsigned int>(error)
<< std::endl;
return;
}
std::cout << "startAudio() succeeded." << std::endl;
}
status = audioVoiceStream->startAudio(startAudioCallback);
5. Stop Created Audio Stream (Voice Call Session)
void stopAudioCallback(ErrorCode error)
{
if (error != ErrorCode::SUCCESS) {
std::cout << "stopAudio() returned with error " << static_cast<unsigned int>(error)
<< std::endl;
return;
}
std::cout << "stopAudio() succeeded." << std::endl;
}
status = audioVoiceStream->stopAudio(stopAudioCallback);
6. Delete an Audio Stream (Voice Call Session), which was created earlier
void deleteStreamCallback(ErrorCode error) {
if (error != ErrorCode::SUCCESS) {
std::cout << "deleteStream() returned with error " << static_cast<unsigned int>(error)
<< std::endl;
return;
}
std::cout << "deleteStream() succeeded." << std::endl;
audioVoiceStream.reset();
}
status = audioManager->deleteStream(std::dynamic_pointer_cast<IAudioStream>(audioVoiceStream),
deleteStreamCallback);