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QTCaptureLayer Reference

Overview

This class provides a layer that displays video frames currently being captured from a device attached to the computer, and is intended to provide support for Core Animation, that is, drawing the contents of a capture session into a layer. Note that this class requires rendering using visual contexts.

Tasks

Creating Capture Layers

• + layerWithSession:
• – initWithSession:
• – session
• – setSession:

Class Methods

layerWithSession:

Creates an autoreleased QTCaptureLayer associated with the specified QTCaptureSession object.

+ (id)layerWithSession:(QTCaptureSession *)session

Discussion

By default, the movie starts playing immediately at rate 1.0 from the beginning of the movie. These default characteristics can be modified by setting layer properties or movie properties

Availability

• Available in Mac OS X v10.5 and later.

Declared In

QTCaptureLayer.h

Instance Methods

initWithSession:

Creates a QTCaptureLayer associated with the specified QTCaptureSession object.

- (id)initWithSession:(QTCaptureSession *)session

Discussion

By default, the movie starts playing immediately at rate 1.0 from the beginning of the movie. These default characteristics can be modified by setting layer properties or movie properties.

Availability

• Available in Mac OS X v10.5 and later.

Declared In

QTCaptureLayer.h

session

Returns the capture session associated with a QTCaptureLayer object.

- (QTCaptureSession *)session

Availability

• Available in Mac OS X v10.5 and later.

Declared In

QTCaptureLayer.h

setSession:

Sets or resets the capture session associated with a QTCaptureLayer object.

- (void)setSession:(QTCaptureSession *)session

Availability

• Available in Mac OS X v10.5 and later.

Declared In

QTCaptureLayer.h

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