Struct Subframe

A struct that represents a time within a frame interval.

Namespace: Unity.LiveCapture

Assembly: Unity.LiveCapture.dll

Syntax

[Serializable]
public struct Subframe

Remarks

The value is stored as a fractional number so that computations are guaranteed to have predictable results and consistent precision.

Constructors

Subframe(int, int)

Creates a new Subframe instance.

Declaration

public Subframe(int subframe, int resolution)

Parameters

Type	Name	Description
int	subframe	The subframe value used to indicate a time somewhere within the duration of the frame. This value is clamped to the range [0, resolution - 1].
int	resolution	The number of possible subframe values in the frame. If this value is not greater than zero, the subframe value is treated as zero.

Fields

DefaultResolution

The default resolution of the subframe value.

Declaration

public const int DefaultResolution = 51200

Field Value

Type	Description
int

Remarks

Values such as 80 or 100 are typical for SMTPE timecode. This chosen value is the lowest common multiple of 80, 100, and 2048, which allows for exact precision when using those values or smaller powers of 2.

MaxResolution

The maximum supported subframe resolution.

Declaration

public const int MaxResolution = 65535

Field Value

Type	Description
int

Properties

Resolution

The number of possible subframe values in the frame.

Declaration

public readonly int Resolution { get; }

Property Value

Type	Description
int

Remarks

This value is in the range [1, MaxResolution]

Value

The subframe within the frame.

Declaration

public readonly int Value { get; }

Property Value

Type	Description
int

Remarks

This value is in the range [0, - 1].

Methods

AsDouble()

Gets the subframe value as a double.

Declaration

public readonly double AsDouble()

Returns

Type	Description
double	The subframe value in the range [0, 1].

AsFloat()

Gets the subframe value as a float.

Declaration

public readonly float AsFloat()

Returns

Type	Description
float	The subframe value in the range [0, 1].

CompareTo(object)

Compares this instance to a specified object and returns an indication of their relative values.

Declaration

public readonly int CompareTo(object obj)

Parameters

Type	Name	Description
object	obj	The object to compare with this instance.

Returns

Type	Description
int	A signed number indicating the relative values of this instance and obj. * Returns a negative value when obj is not a valid Subframe instance or this instance is less than obj. * Returns zero when this instance is the same as obj. * Returns a positive value when this instance is greater than obj.

CompareTo(Subframe)

Compares this instance to a specified Subframe and returns an indication of their relative values.

Declaration

public readonly int CompareTo(Subframe other)

Parameters

Type	Name	Description
Subframe	other	The value to compare with this instance.

Returns

Type	Description
int	A signed number indicating the relative values of this instance and other. * Returns a negative value when this instance is less than other. * Returns zero when this instance is the same as other. * Returns a positive value when this instance is greater than other.

Equals(object)

Returns a value indicating whether this instance is equal to a specified object.

Declaration

public override readonly bool Equals(object obj)

Parameters

Type	Name	Description
object	obj	An object to compare with this instance.

Returns

Type	Description
bool	true if obj is an instance of Subframe and equals the value of this instance; otherwise, false.

Overrides

ValueType.Equals(object)

Equals(Subframe)

Returns a value indicating whether this instance is equal to a specified Subframe.

Declaration

public readonly bool Equals(Subframe other)

Parameters

Type	Name	Description
Subframe	other	A value to compare with this instance.

Returns

Type	Description
bool	true if other has the same value as this instance; otherwise, false.

FromDouble(double, int)

Creates a new Subframe value from a double.

Declaration

public static Subframe FromDouble(double subframe, int resolution = 51200)

Parameters

Type	Name	Description
double	subframe	A subframe value used to indicate a time somewhere within the duration of the frame. It is clamped to the range [0, 1].
int	resolution	The number of possible subframe values in the frame. If this value is not greater than zero, the subframe value is treated as zero.

Returns

Type	Description
Subframe	A new Subframe that represents the given frame time.

FromFloat(float, int)

Creates a new Subframe value from a float.

Declaration

public static Subframe FromFloat(float subframe, int resolution = 51200)

Parameters

Type	Name	Description
float	subframe	A subframe value used to indicate a time somewhere within the duration of the frame. It is clamped to the range [0, 1].
int	resolution	The number of possible subframe values in the frame. If this value is not greater than zero, the subframe value is treated as zero.

Returns

Type	Description
Subframe	A new Subframe that represents the given frame time.

GetHashCode()

Returns the hash code for this instance.

Declaration

public override readonly int GetHashCode()

Returns

Type	Description
int	The hash code for this instance.

Overrides

ValueType.GetHashCode()

ToString()

Returns a string that represents the current instance.

Declaration

public override readonly string ToString()

Returns

Type	Description
string	A string that represents the current instance.

Overrides

ValueType.ToString()

Operators

operator ==(Subframe, Subframe)

Indicates whether two specified instances of Subframe are equal.

Declaration

public static bool operator ==(Subframe a, Subframe b)

Parameters

Type	Name	Description
Subframe	a	The first instance to compare.
Subframe	b	The second instance to compare.

Returns

Type	Description
bool	true if a and b have the same value; otherwise, false.

explicit operator double(Subframe)

Gets the value of a Subframe as a double.

Declaration

public static explicit operator double(Subframe subframe)

Parameters

Type	Name	Description
Subframe	subframe	The value to cast.

Returns

Type	Description
double	The subframe value in the range [0, 1].

explicit operator float(Subframe)

Gets the value of a Subframe as a float.

Declaration

public static explicit operator float(Subframe subframe)

Parameters

Type	Name	Description
Subframe	subframe	The value to cast.

Returns

Type	Description
float	The subframe value in the range [0, 1].

operator >(Subframe, Subframe)

Indicates whether one specified Subframe is later than another specified Subframe.

Declaration

public static bool operator >(Subframe a, Subframe b)

Parameters

Type	Name	Description
Subframe	a	The first instance to compare.
Subframe	b	The second instance to compare.

Returns

Type	Description
bool	true if a is later than b; otherwise, false.

operator >=(Subframe, Subframe)

Indicates whether one specified Subframe is later than or the same as another specified Subframe.

Declaration

public static bool operator >=(Subframe a, Subframe b)

Parameters

Type	Name	Description
Subframe	a	The first instance to compare.
Subframe	b	The second instance to compare.

Returns

Type	Description
bool	true if a is later than or the same as b; otherwise, false.

operator !=(Subframe, Subframe)

Indicates whether two specified instances of Subframe are not equal.

Declaration

public static bool operator !=(Subframe a, Subframe b)

Parameters

Type	Name	Description
Subframe	a	The first instance to compare.
Subframe	b	The second instance to compare.

Returns

Type	Description
bool	true if a and b do not have the same value; otherwise, false.

operator <(Subframe, Subframe)

Indicates whether one specified Subframe is earlier than another specified Subframe.

Declaration

public static bool operator <(Subframe a, Subframe b)

Parameters

Type	Name	Description
Subframe	a	The first instance to compare.
Subframe	b	The second instance to compare.

Returns

Type	Description
bool	true if a is earlier than b; otherwise, false.

operator <=(Subframe, Subframe)

Indicates whether one specified Subframe is earlier than or the same as another specified Subframe.

Declaration

public static bool operator <=(Subframe a, Subframe b)

Parameters

Type	Name	Description
Subframe	a	The first instance to compare.
Subframe	b	The second instance to compare.

Returns

Type	Description
bool	true if a is earlier than or the same as b; otherwise, false.