AVDeviceCapabilitiesQuery Class Reference


                    
                    
                    init(formatContext:options:)

Initialize capabilities probing API based on AVOption API.

Throws

AVError

Swift

public init(formatContext: AVFormatContext, options: [String: String]? = nil) throws

`formatContext`	Context of the device.
`options`	An dictionary filled with device-private options. The same options must be passed later to `AVFormatContext.writeHeader(options:)` for output devices or `AVFormatContext.openInput(_:format:options:)` for input devices, or at any other place that affects device-private options.


                    
                    
                    codec

Undocumented

Swift

public var codec: AVCodecID { get }


                    
                    
                    sampleFormat

Undocumented

Swift

public var sampleFormat: AVCodecID { get }


                    
                    
                    sampleRate

Undocumented

Swift

public var sampleRate: Int { get }


                    
                    
                    channelCount

Undocumented

Swift

public var channelCount: Int { get }


                    
                    
                    channelLayout

Undocumented

Swift

public var channelLayout: AVChannelLayout { get }


                    
                    
                    pixelFormat

Undocumented

Swift

public var pixelFormat: AVCodecID { get }


                    
                    
                    windowWidth

Undocumented

Swift

public var windowWidth: Int { get }


                    
                    
                    windowHeight

Undocumented

Swift

public var windowHeight: Int { get }


                    
                    
                    frameWidth

Undocumented

Swift

public var frameWidth: Int { get }


                    
                    
                    frameHeight

Undocumented

Swift

public var frameHeight: Int { get }

fps

Undocumented

Swift

public var fps: AVRational { get }