Class: CVTimeStamp

Inherits:
Boxed show all

Overview

A structure for defining a display timestamp.

Instance Attribute Summary (collapse)

Method Summary

Methods inherited from Boxed

opaque?, type

Methods inherited from NSObject

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Constructor Details

This class inherits a constructor from NSObject

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class NSObject

Instance Attribute Details

- (Integer) flags

A bit field containing additional information about the timestamp. See “CVTimeStamp Flags” for a list of possible values. .

Returns:

  • (Integer)

    A bit field containing additional information about the timestamp. See “CVTimeStamp Flags” for a list of possible values. .

- (Integer) hostTime

The base time of the host root time.

Returns:

  • (Integer)

    The base time of the host root time.

- (Float) rateScalar

The current rate of the device as measured by the timestamps, divided by the nominal rate.

Returns:

  • (Float)

    The current rate of the device as measured by the timestamps, divided by the nominal rate.

- (Integer) reserved

Reserved. Do not use.

Returns:

  • (Integer)

    Reserved. Do not use.

- (CVSMPTETime) smpteTime

The SMPTE time representation of the timestamp.

Returns:

  • (CVSMPTETime)

    The SMPTE time representation of the timestamp.

- (Integer) version

The current CVTimeStamp structure is version 0. Some functions require you to specify a version when passing in a timestamp structure to be filled.

Returns:

  • (Integer)

    The current CVTimeStamp structure is version 0. Some functions require you to specify a version when passing in a timestamp structure to be filled.

- (Integer) videoRefreshPeriod

The nominal update period of the current output device.

Returns:

  • (Integer)

    The nominal update period of the current output device.

- (Integer) videoTime

The start of a frame (or field for interlaced video).

Returns:

  • (Integer)

    The start of a frame (or field for interlaced video).

- (Integer) videoTimeScale

The scale (in units per second) of the videoTimeScale and videoRefreshPeriod fields.

Returns:

  • (Integer)

    The scale (in units per second) of the videoTimeScale and videoRefreshPeriod fields.