MediaDescrambler

SCRAMBLE_CONTROL_EVEN_KEY

static val SCRAMBLE_CONTROL_EVEN_KEY: Byte

Scramble control value indicating that the even key is used.

Value: 2

SCRAMBLE_CONTROL_ODD_KEY

static val SCRAMBLE_CONTROL_ODD_KEY: Byte

Scramble control value indicating that the odd key is used.

Value: 3

SCRAMBLE_CONTROL_RESERVED

static val SCRAMBLE_CONTROL_RESERVED: Byte

Scramble control value reserved and shouldn't be used currently.

Value: 1

SCRAMBLE_CONTROL_UNSCRAMBLED

static val SCRAMBLE_CONTROL_UNSCRAMBLED: Byte

Scramble control value indicating that the samples are not scrambled.

Value: 0

SCRAMBLE_FLAG_PES_HEADER

static val SCRAMBLE_FLAG_PES_HEADER: Byte

Scramble flag for a hint indicating that the descrambling request is for retrieving the PES header info only.

Value: 1

MediaDescrambler

MediaDescrambler(CA_system_id: Int)

Instantiate a MediaDescrambler.

close

fun close(): Unit

Closes this resource, relinquishing any underlying resources. This method is invoked automatically on objects managed by the try-with-resources statement.

descramble

fun descramble(
    srcBuf: ByteBuffer, 
    dstBuf: ByteBuffer, 
    cryptoInfo: MediaCodec.CryptoInfo
): Int

Descramble a ByteBuffer of data described by a android.media.MediaCodec.CryptoInfo structure.

requiresSecureDecoderComponent

fun requiresSecureDecoderComponent(mime: String): Boolean

Query if the scrambling scheme requires the use of a secure decoder to decode data of the given mime type.

setMediaCasSession

fun setMediaCasSession(session: MediaCas.Session): Unit

Associate a MediaCas session with this MediaDescrambler instance. The MediaCas session is used to securely load decryption keys for the descrambler. The crypto keys loaded through the MediaCas session may be selected for use during the descrambling operation performed by or @link by specifying even or odd key in the android.media.MediaCodec.CryptoInfo#key field.

finalize

protected fun finalize(): Unit

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. A subclass overrides the finalize method to dispose of system resources or to perform other cleanup.

The general contract of finalize is that it is invoked if and when the Java virtual machine has determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, except as a result of an action taken by the finalization of some other object or class which is ready to be finalized. The finalize method may take any action, including making this object available again to other threads; the usual purpose of finalize, however, is to perform cleanup actions before the object is irrevocably discarded. For example, the finalize method for an object that represents an input/output connection might perform explicit I/O transactions to break the connection before the object is permanently discarded.

The finalize method of class Object performs no special action; it simply returns normally. Subclasses of Object may override this definition.

The Java programming language does not guarantee which thread will invoke the finalize method for any given object. It is guaranteed, however, that the thread that invokes finalize will not be holding any user-visible synchronization locks when finalize is invoked. If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates.

After the finalize method has been invoked for an object, no further action is taken until the Java virtual machine has again determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, including possible actions by other objects or classes which are ready to be finalized, at which point the object may be discarded.

The finalize method is never invoked more than once by a Java virtual machine for any given object.

Any exception thrown by the finalize method causes the finalization of this object to be halted, but is otherwise ignored.