com.google.android.exoplayer2.extractor.mp4

Class PsshAtomUtil

java.lang.Object

com.google.android.exoplayer2.extractor.mp4.PsshAtomUtil

public final class PsshAtomUtil
extends java.lang.Object

Utility methods for handling PSSH atoms.

Method Summary

Modifier and Type	Method and Description
static byte[]	buildPsshAtom(java.util.UUID uuid, byte[] data) Builds a PSSH atom for a given UUID containing the given scheme specific data.
static byte[]	parseSchemeSpecificData(byte[] atom, java.util.UUID uuid) Parses the scheme specific data from a PSSH atom.
static java.util.UUID	parseUuid(byte[] atom) Parses the UUID from a PSSH atom.

Methods inherited from class java.lang.Object

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

Method Detail

buildPsshAtom

public static byte[] buildPsshAtom(java.util.UUID uuid,
                                   byte[] data)

Builds a PSSH atom for a given UUID containing the given scheme specific data.

Parameters:

uuid - The UUID of the scheme.

data - The scheme specific data.

Returns:

The PSSH atom.

parseUuid

public static java.util.UUID parseUuid(byte[] atom)

Parses the UUID from a PSSH atom. Version 0 and 1 PSSH atoms are supported.

The UUID is only parsed if the data is a valid PSSH atom.

Parameters:

atom - The atom to parse.

Returns:

The parsed UUID. Null if the input is not a valid PSSH atom, or if the PSSH atom has an unsupported version.

parseSchemeSpecificData

public static byte[] parseSchemeSpecificData(byte[] atom,
                                             java.util.UUID uuid)

Parses the scheme specific data from a PSSH atom. Version 0 and 1 PSSH atoms are supported.

The scheme specific data is only parsed if the data is a valid PSSH atom matching the given UUID, or if the data is a valid PSSH atom of any type in the case that the passed UUID is null.

Parameters:

atom - The atom to parse.

uuid - The required UUID of the PSSH atom, or null to accept any UUID.

Returns:

The parsed scheme specific data. Null if the input is not a valid PSSH atom, or if the PSSH atom has an unsupported version, or if the PSSH atom does not match the passed UUID.