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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. Similar to 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

This class creates a new output connection for each input connection of a matching media type connected to the capture session. The connections 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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