driver

const (
	// Camera represents camera devices
	Camera DeviceType = "camera"
	// Microphone represents microphone devices
	Microphone = "microphone"
	// Screen represents screen devices
	Screen = "screen"
)

const (
	// StateClosed means that the driver has not been opened. In this state,
	// all information related to the hardware are still unknown. For example,
	// if it's a video driver, the pixel format information is still unknown.
	StateClosed State = "closed"
	// StateOpened means that the driver is already opened and information about
	// the hardware are already known and may be extracted from the driver.
	StateOpened = "opened"
	// StateRunning means that the driver has been sending data. The caller
	// who started the driver may start reading data from the hardware.
	StateRunning = "running"
)