uint8_t VolumeUp(const cec_logical_address source, bool bSendRelease = true);
uint8_t VolumeDown(const cec_logical_address source, bool bSendRelease = true);
uint8_t MuteAudio(const cec_logical_address source);
uint8_t VolumeUp(const cec_logical_address source, bool bSendRelease = true);
uint8_t VolumeDown(const cec_logical_address source, bool bSendRelease = true);
uint8_t MuteAudio(const cec_logical_address source);