Sample Auxiliary Information

Functions
MP4Err	MP4SetupSampleAuxiliaryInformation (MP4Media theMedia, u8 isUsingAuxInfoPropertiesFlag, u32 aux_info_type, u32 aux_info_type_parameter, u8 default_sample_info_size)
	Setup and initialize sample auxiliary information for a track.
MP4Err	MP4AddSampleAuxiliaryInformation (MP4Media theMedia, u8 isUsingAuxInfoPropertiesFlag, u32 aux_info_type, u32 aux_info_type_parameter, MP4Handle dataH, u32 sampleCount, MP4Handle sizesH)
	Add sample auxiliary information data for a range of samples.
MP4Err	MP4GetSampleAuxiliaryInformation (MP4Media theMedia, u32 *outCount, MP4Handle isUsingAuxInfoPropertiesFlags, MP4Handle aux_info_types, MP4Handle aux_info_type_parameters)
	Get information about all sample auxiliary information for a track.
MP4Err	MP4GetSampleAuxiliaryInformationForSample (MP4Media theMedia, u8 isUsingAuxInfoPropertiesFlag, u32 aux_info_type, u32 aux_info_type_parameter, u32 sampleNr, MP4Handle outDataH, u32 *outSize)
	Get the sample auxiliary information data for a specific sample and type.

Detailed Description

MPEG sample auxiliary information functions

Function Documentation

MP4AddSampleAuxiliaryInformation()

MP4Err MP4AddSampleAuxiliaryInformation	(	MP4Media	theMedia,
		u8	isUsingAuxInfoPropertiesFlag,
		u32	aux_info_type,
		u32	aux_info_type_parameter,
		MP4Handle	dataH,
		u32	sampleCount,
		MP4Handle	sizesH )

Add sample auxiliary information data for a range of samples.

The first three parameters are used to identify the type of sample auxiliary information.

Note

before adding data, MP4SetupSampleAuxiliaryInformation() has to be called with the same parameters.

MP4GetSampleAuxiliaryInformation()

MP4Err MP4GetSampleAuxiliaryInformation	(	MP4Media	theMedia,
		u32 *	outCount,
		MP4Handle	isUsingAuxInfoPropertiesFlags,
		MP4Handle	aux_info_types,
		MP4Handle	aux_info_type_parameters )

Get information about all sample auxiliary information for a track.

The MP4Handles will contain an array of u8 and u32, which will represent the description of each instance of sample auxiliary information inside a track.

Parameters

outCount	the number of different sample auxiliary information.
isUsingAuxInfoPropertiesFlags
aux_info_types
aux_info_type_parameters

MP4SetupSampleAuxiliaryInformation()

MP4Err MP4SetupSampleAuxiliaryInformation	(	MP4Media	theMedia,
		u8	isUsingAuxInfoPropertiesFlag,
		u32	aux_info_type,
		u32	aux_info_type_parameter,
		u8	default_sample_info_size )

Setup and initialize sample auxiliary information for a track.

It must be called before adding sample auxiliary data. It can be called multiple times with different type, parameter combinations to setup multiple sample auxiliary information for a single track. To add sample auxiliary data for a sample use MP4AddSampleAuxiliaryInformation()

Parameters

isUsingAuxInfoPropertiesFlag	Indicates whether aux_info_type and aux_info_type_parameter are used for setting up auxiliary information.
aux_info_type	Set this properly according to the specification.
aux_info_type_parameter	Set this properly according to the specification.
default_sample_info_size	If not equal to zero, all data for sample auxiliary information must be the given size.