Class Utility

Utility methods.

Inheritance

System.Object

Utility

Namespace: FM.LiveSwitch.H264

Assembly: FM.LiveSwitch.dll

Syntax

public class Utility : object

Properties

SupportedPacketizationModes

Gets the supported packetization modes.

Declaration

public static int[] SupportedPacketizationModes { get; }

Property Value

Type	Description
System.Int32[]

SupportedProfileIdcs

Gets the supported profile ID codes.

Declaration

public static int[] SupportedProfileIdcs { get; }

Property Value

Type	Description
System.Int32[]

Methods

GetNaluLength(DataBuffer, Int32)

Gets the NALU length at the specified offset.

Declaration

public static int GetNaluLength(DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Int32

GetNaluType(DataBuffer)

Gets the NALU type.

Declaration

public static int GetNaluType(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
System.Int32

GetNaluType(DataBuffer, Int32)

Gets the NALU type at the specified offset.

Declaration

public static int GetNaluType(DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Int32

GetNaluTypes(DataBuffer)

Gets the NALU types.

Declaration

public static int[] GetNaluTypes(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
System.Int32[]

GetPacketizationMode(FormatParametersAttribute)

Gets the packetization mode from an H.264 format parameters attribute.

Declaration

public static int? GetPacketizationMode(FormatParametersAttribute formatParametersAttribute)

Parameters

Type	Name	Description
FormatParametersAttribute	formatParametersAttribute	The format parameters attribute.

Returns

Type	Description
System.Nullable<System.Int32>

GetPacketizationMode(MapAttribute)

Gets the packetization mode from the related format parameters attribute of an H.264 RTP map attribute.

Declaration

public static int? GetPacketizationMode(MapAttribute rtpMapAttribute)

Parameters

Type	Name	Description
MapAttribute	rtpMapAttribute	The RTP map attribute.

Returns

Type	Description
System.Nullable<System.Int32>

GetProfileLevelId(FormatParametersAttribute)

Gets the prolfile level id from an H.264 format parameters attribute.

Declaration

public static ProfileLevelId GetProfileLevelId(FormatParametersAttribute formatParametersAttribute)

Parameters

Type	Name	Description
FormatParametersAttribute	formatParametersAttribute	The format parameters attribute.

Returns

Type	Description
ProfileLevelId

GetProfileLevelId(MapAttribute)

Gets the profile level id from the related format parameters attribute of an H.264 RTP map attribute.

Declaration

public static ProfileLevelId GetProfileLevelId(MapAttribute rtpMapAttribute)

Parameters

Type	Name	Description
MapAttribute	rtpMapAttribute	The RTP map attribute.

Returns

Type	Description
ProfileLevelId

GetStartCodeLength(DataBuffer, Int32)

Gets the start code length at the specified offset.

Declaration

public static int GetStartCodeLength(DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Int32

IsAud(DataBuffer)

Determines whether the encoded frame starts with an AUD NALU.

Declaration

public static bool IsAud(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
System.Boolean

IsAud(DataBuffer, Int32)

Determines whether the encoded frame starts with an AUD NALU.

Declaration

public static bool IsAud(DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Boolean

IsIdr(DataBuffer)

Determines whether the encoded frame starts with an IDR NALU.

Declaration

public static bool IsIdr(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
System.Boolean

IsIdr(DataBuffer, Int32)

Determines whether the encoded frame starts with an IDR NALU.

Declaration

public static bool IsIdr(DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Boolean

IsKeyFrame(DataBuffer)

Determines whether the encoded frame starts with a keyframe (IDR, PPS, or SPS).

Declaration

public static bool IsKeyFrame(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
System.Boolean

IsNaluType(Int32, DataBuffer, Int32)

Determines whether the encoded frame starts with a given NALU type.

Declaration

public static bool IsNaluType(int naluType, DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
System.Int32	naluType	The NALU type.
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Boolean

IsPps(DataBuffer)

Determines whether the encoded frame starts with a PPS NALU.

Declaration

public static bool IsPps(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
System.Boolean

IsPps(DataBuffer, Int32)

Determines whether the encoded frame starts with a PPS NALU.

Declaration

public static bool IsPps(DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Boolean

IsSps(DataBuffer)

Determines whether the encoded frame starts with an SPS NALU.

Declaration

public static bool IsSps(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
System.Boolean

IsSps(DataBuffer, Int32)

Determines whether the encoded frame starts with an SPS NALU.

Declaration

public static bool IsSps(DataBuffer encodedFrame, int offset)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.
System.Int32	offset	The offset into the encoded frame.

Returns

Type	Description
System.Boolean

TrimAud(DataBuffer)

Trims an AUD NALU from the start of the encoded frame, if one exists.

Declaration

public static DataBuffer TrimAud(DataBuffer encodedFrame)

Parameters

Type	Name	Description
DataBuffer	encodedFrame	The encoded frame.

Returns

Type	Description
DataBuffer