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QTCaptureOutput Class Reference

Overview

QTCaptureOutput is an abstract class that provides an interface for connecting capture output destinations, such as QuickTime files and video previews, to a QTCaptureSession. Like a QTCaptureInput, a QTCaptureOutput can have multiple connections represented by QTCaptureConnection objects, one for each stream of media that it receives. Unlike a QTCaptureInput however, a QTCaptureOutput does not have any connections when it is first created. When an output is added to a QTCaptureSession, it creates connections as appropriate so that the session has a destination for all of its input media.

Tasks

Capturing Connections

• – connections

Instance Methods

connections

Returns an array of connections owned by the receiver that are currently connected to a capture session.

- (NSArray *)connections

Return Value

An array of QTCaptureConnection instances owned by the receiver that are currently connected to a capture session.

Discussion

QTCaptureOutputs create a new output connection for each input connection of a matching media type connected to the capture session. This method returns an array of connections owned by the receiver that are currently connected to the capture session’s input connections.

Availability

• Mac OS X v10.5 and later.

Declared In

QTCaptureOutput.h

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