com.googlecode.mp4parser.contentprotection

Class GenericHeader

java.lang.Object

com.googlecode.mp4parser.boxes.piff.ProtectionSpecificHeader

com.googlecode.mp4parser.contentprotection.GenericHeader

public class GenericHeader
extends ProtectionSpecificHeader

Specifications > Microsoft PlayReady Format Specification > 2. PlayReady Media Format > 2.7. ASF GUIDs

ASF_Protection_System_Identifier_Object 9A04F079-9840-4286-AB92E65BE0885F95

ASF_Content_Protection_System_Microsoft_PlayReady F4637010-03C3-42CD-B932B48ADF3A6A54

ASF_StreamType_PlayReady_Encrypted_Command_Media 8683973A-6639-463A-ABD764F1CE3EEAE0

Specifications > Microsoft PlayReady Format Specification > 2. PlayReady Media Format > 2.5. Data Objects > 2.5.1. Payload Extension for AES in Counter Mode

The sample Id is used as the IV in CTR mode. Block offset, starting at 0 and incremented by 1 after every 16 bytes, from the beginning of the sample is used as the Counter.

The sample ID for each sample (media object) is stored as an ASF payload extension system with the ID of ASF_Payload_Extension_Encryption_SampleID = {6698B84E-0AFA-4330-AEB2-1C0A98D7A44D}. The payload extension can be stored as a fixed size extension of 8 bytes.

The sample ID is always stored in big-endian byte order.

Field Summary

Fields

Modifier and Type	Field and Description
static UUID	PROTECTION_SYSTEM_ID

Fields inherited from class com.googlecode.mp4parser.boxes.piff.ProtectionSpecificHeader

uuidRegistry

Constructor Summary

Constructors

Constructor and Description
GenericHeader()

Method Summary

Methods

Modifier and Type	Method and Description
ByteBuffer	getData()
UUID	getSystemId()
void	parse(ByteBuffer buffer)

Methods inherited from class com.googlecode.mp4parser.boxes.piff.ProtectionSpecificHeader

createFor, equals, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

PROTECTION_SYSTEM_ID

public static UUID PROTECTION_SYSTEM_ID

Constructor Detail

GenericHeader

public GenericHeader()

Method Detail

getSystemId

public UUID getSystemId()

Specified by:

getSystemId in class ProtectionSpecificHeader

parse

public void parse(ByteBuffer buffer)

Specified by:

parse in class ProtectionSpecificHeader

getData

public ByteBuffer getData()

Specified by:

getData in class ProtectionSpecificHeader