com.google.android.exoplayer2.extractor.mp4

Class TrackEncryptionBox

java.lang.Object

com.google.android.exoplayer2.extractor.mp4.TrackEncryptionBox

public final class TrackEncryptionBox
extends java.lang.Object

Encapsulates information parsed from a track encryption (tenc) box or sample group description (sgpd) box in an MP4 stream.

Field Summary

Fields

Modifier and Type	Field and Description
TrackOutput.CryptoData	cryptoData A TrackOutput.CryptoData instance containing the encryption information from this TrackEncryptionBox.
byte[]	defaultInitializationVector If perSampleIvSize is 0, holds the default initialization vector as defined in the track encryption box or sample group description box.
boolean	isEncrypted Indicates the encryption state of the samples in the sample group.
int	perSampleIvSize The initialization vector size in bytes for the samples in the corresponding sample group.
java.lang.String	schemeType The protection scheme type, as defined by the 'schm' box, or null if unknown.

Constructor Summary

Constructors

Constructor and Description
TrackEncryptionBox(boolean isEncrypted, java.lang.String schemeType, int perSampleIvSize, byte[] keyId, int defaultEncryptedBlocks, int defaultClearBlocks, byte[] defaultInitializationVector)

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

isEncrypted

public final boolean isEncrypted

Indicates the encryption state of the samples in the sample group.

schemeType

@Nullable
public final java.lang.String schemeType

The protection scheme type, as defined by the 'schm' box, or null if unknown.

cryptoData

public final TrackOutput.CryptoData cryptoData

A TrackOutput.CryptoData instance containing the encryption information from this TrackEncryptionBox.

perSampleIvSize

public final int perSampleIvSize

The initialization vector size in bytes for the samples in the corresponding sample group.

defaultInitializationVector

public final byte[] defaultInitializationVector

If perSampleIvSize is 0, holds the default initialization vector as defined in the track encryption box or sample group description box. Null otherwise.

Constructor Detail

TrackEncryptionBox

public TrackEncryptionBox(boolean isEncrypted,
                          @Nullable
                          java.lang.String schemeType,
                          int perSampleIvSize,
                          byte[] keyId,
                          int defaultEncryptedBlocks,
                          int defaultClearBlocks,
                          @Nullable
                          byte[] defaultInitializationVector)

Parameters:

isEncrypted - See isEncrypted.

schemeType - See schemeType.

perSampleIvSize - See perSampleIvSize.

keyId - See TrackOutput.CryptoData#encryptionKey.

defaultEncryptedBlocks - See TrackOutput.CryptoData#encryptedBlocks.

defaultClearBlocks - See TrackOutput.CryptoData#clearBlocks.

defaultInitializationVector - See defaultInitializationVector.