Utility methods. More...

Instance Methods
(instancetype)	- init

Class Methods
(int)	+ getNaluLengthWithEncodedFrame:offset:
	Gets the NALU length at the specified offset. More...

(NSMutableArray *)	+ getNaluTypesWithEncodedFrame:
	Gets the NALU types. More...

(int)	+ getNaluTypeWithEncodedFrame:
	Gets the NALU type. More...

(int)	+ getNaluTypeWithEncodedFrame:offset:
	Gets the NALU type at the specified offset. More...

(FMLiveSwitchNullableInt *)	+ getPacketizationModeWithFormatParametersAttribute:
	Gets the packetization mode from an H.264 format parameters attribute. More...

(FMLiveSwitchNullableInt *)	+ getPacketizationModeWithRtpMapAttribute:
	Gets the packetization mode from the related format parameters attribute of an H.264 RTP map attribute. More...

(FMLiveSwitchH264ProfileLevelId *)	+ getProfileLevelIdWithFormatParametersAttribute:
	Gets the prolfile level id from an H.264 format parameters attribute. More...

(FMLiveSwitchH264ProfileLevelId *)	+ getProfileLevelIdWithRtpMapAttribute:
	Gets the profile level id from the related format parameters attribute of an H.264 RTP map attribute. More...

(int)	+ getStartCodeLengthWithEncodedFrame:offset:
	Gets the start code length at the specified offset. More...

(bool)	+ isAudWithEncodedFrame:
	Determines whether the encoded frame starts with an AUD NALU. More...

(bool)	+ isAudWithEncodedFrame:offset:
	Determines whether the encoded frame starts with an AUD NALU. More...

(bool)	+ isIdrWithEncodedFrame:
	Determines whether the encoded frame starts with an IDR NALU. More...

(bool)	+ isIdrWithEncodedFrame:offset:
	Determines whether the encoded frame starts with an IDR NALU. More...

(bool)	+ isKeyFrameWithEncodedFrame:
	Determines whether the encoded frame starts with a keyframe (IDR, PPS, or SPS). More...

(bool)	+ isNaluType:encodedFrame:offset:
	Determines whether the encoded frame starts with a given NALU type. More...

(bool)	+ isPpsWithEncodedFrame:
	Determines whether the encoded frame starts with a PPS NALU. More...

(bool)	+ isPpsWithEncodedFrame:offset:
	Determines whether the encoded frame starts with a PPS NALU. More...

(bool)	+ isSpsWithEncodedFrame:
	Determines whether the encoded frame starts with an SPS NALU. More...

(bool)	+ isSpsWithEncodedFrame:offset:
	Determines whether the encoded frame starts with an SPS NALU. More...

(NSMutableArray *)	+ supportedPacketizationModes
	Gets the supported packetization modes. More...

(NSMutableArray *)	+ supportedProfileIdcs
	Gets the supported profile ID codes. More...

(FMLiveSwitchDataBuffer *)	+ trimAudWithEncodedFrame:
	Trims an AUD NALU from the start of the encoded frame, if one exists. More...

(FMLiveSwitchH264Utility *)	+ utility

Detailed Description

Utility methods.

Method Documentation

◆ getNaluLengthWithEncodedFrame:offset:

+ (int) getNaluLengthWithEncodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

Gets the NALU length at the specified offset.

Parameters

encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ getNaluTypesWithEncodedFrame:

+ (NSMutableArray*) getNaluTypesWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

Gets the NALU types.

Parameters

encodedFrame The encoded frame.

◆ getNaluTypeWithEncodedFrame:

+ (int) getNaluTypeWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

Gets the NALU type.

Parameters

encodedFrame The encoded frame.

◆ getNaluTypeWithEncodedFrame:offset:

+ (int) getNaluTypeWithEncodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

Gets the NALU type at the specified offset.

Parameters

encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ getPacketizationModeWithFormatParametersAttribute:

+ (FMLiveSwitchNullableInt*) getPacketizationModeWithFormatParametersAttribute: (FMLiveSwitchSdpFormatParametersAttribute *) formatParametersAttribute

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

Parameters

formatParametersAttribute The format parameters attribute.

◆ getPacketizationModeWithRtpMapAttribute:

+ (FMLiveSwitchNullableInt*) getPacketizationModeWithRtpMapAttribute: (FMLiveSwitchSdpRtpMapAttribute *) rtpMapAttribute

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

Parameters

rtpMapAttribute The RTP map attribute.

◆ getProfileLevelIdWithFormatParametersAttribute:

+ (FMLiveSwitchH264ProfileLevelId*) getProfileLevelIdWithFormatParametersAttribute: (FMLiveSwitchSdpFormatParametersAttribute *) formatParametersAttribute

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

Parameters

formatParametersAttribute The format parameters attribute.

◆ getProfileLevelIdWithRtpMapAttribute:

+ (FMLiveSwitchH264ProfileLevelId*) getProfileLevelIdWithRtpMapAttribute: (FMLiveSwitchSdpRtpMapAttribute *) rtpMapAttribute

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

Parameters

rtpMapAttribute The RTP map attribute.

◆ getStartCodeLengthWithEncodedFrame:offset:

+ (int) getStartCodeLengthWithEncodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

Gets the start code length at the specified offset.

Parameters

encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ init

- (instancetype) init

◆ isAudWithEncodedFrame:

+ (bool) isAudWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

Determines whether the encoded frame starts with an AUD NALU.

Parameters

encodedFrame The encoded frame.

◆ isAudWithEncodedFrame:offset:

+ (bool) isAudWithEncodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

Determines whether the encoded frame starts with an AUD NALU.

Parameters

encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ isIdrWithEncodedFrame:

+ (bool) isIdrWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

Determines whether the encoded frame starts with an IDR NALU.

Parameters

encodedFrame The encoded frame.

◆ isIdrWithEncodedFrame:offset:

+ (bool) isIdrWithEncodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

Determines whether the encoded frame starts with an IDR NALU.

Parameters

encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ isKeyFrameWithEncodedFrame:

+ (bool) isKeyFrameWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

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

Parameters

encodedFrame The encoded frame.

◆ isNaluType:encodedFrame:offset:

+ (bool) isNaluType:	(int)	naluType
encodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

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

Parameters

naluType	The NALU type.
encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ isPpsWithEncodedFrame:

+ (bool) isPpsWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

Determines whether the encoded frame starts with a PPS NALU.

Parameters

encodedFrame The encoded frame.

◆ isPpsWithEncodedFrame:offset:

+ (bool) isPpsWithEncodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

Determines whether the encoded frame starts with a PPS NALU.

Parameters

encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ isSpsWithEncodedFrame:

+ (bool) isSpsWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

Determines whether the encoded frame starts with an SPS NALU.

Parameters

encodedFrame The encoded frame.

◆ isSpsWithEncodedFrame:offset:

+ (bool) isSpsWithEncodedFrame:	(FMLiveSwitchDataBuffer *)	encodedFrame
offset:	(int)	offset

Determines whether the encoded frame starts with an SPS NALU.

Parameters

encodedFrame	The encoded frame.
offset	The offset into the encoded frame.

◆ supportedPacketizationModes

+ (NSMutableArray*) supportedPacketizationModes

Gets the supported packetization modes.

◆ supportedProfileIdcs

+ (NSMutableArray*) supportedProfileIdcs

Gets the supported profile ID codes.

◆ trimAudWithEncodedFrame:

+ (FMLiveSwitchDataBuffer*) trimAudWithEncodedFrame: (FMLiveSwitchDataBuffer *) encodedFrame

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

Parameters

encodedFrame The encoded frame.

◆ utility

+ (FMLiveSwitchH264Utility*) utility

Instance Methods

Class Methods

Detailed Description

Method Documentation

◆ getNaluLengthWithEncodedFrame:offset:

◆ getNaluTypesWithEncodedFrame:

◆ getNaluTypeWithEncodedFrame:

◆ getNaluTypeWithEncodedFrame:offset:

◆ getPacketizationModeWithFormatParametersAttribute:

◆ getPacketizationModeWithRtpMapAttribute:

◆ getProfileLevelIdWithFormatParametersAttribute:

◆ getProfileLevelIdWithRtpMapAttribute:

◆ getStartCodeLengthWithEncodedFrame:offset:

◆ init

◆ isAudWithEncodedFrame:

◆ isAudWithEncodedFrame:offset:

◆ isIdrWithEncodedFrame:

◆ isIdrWithEncodedFrame:offset:

◆ isKeyFrameWithEncodedFrame:

◆ isNaluType:encodedFrame:offset:

◆ isPpsWithEncodedFrame:

◆ isPpsWithEncodedFrame:offset:

◆ isSpsWithEncodedFrame:

◆ isSpsWithEncodedFrame:offset:

◆ supportedPacketizationModes

◆ supportedProfileIdcs

◆ trimAudWithEncodedFrame:

◆ utility