@UnstableApi
class CryptoInfo

Metadata describing the structure of an encrypted input sample.

This class is a compatibility wrapper for android.media.MediaCodec.CryptoInfo.

Summary

Public constructors

Public functions
Unit

Increases the number of clear data for the first sub sample by count.
Unit
set(
    numSubSamples: Int,
    numBytesOfClearData: IntArray!,
    numBytesOfEncryptedData: IntArray!,
    key: ByteArray!,
    iv: ByteArray!,
    @C.CryptoMode mode: Int,
    encryptedBlocks: Int,
    clearBlocks: Int
)

Public properties
Int
Int
MediaCodec.CryptoInfo!
ByteArray<Byte>?

The 16 byte initialization vector.
ByteArray<Byte>?

The 16 byte key id.
Int

The type of encryption that has been applied.
IntArray<Int>?

The number of leading unencrypted bytes in each sub-sample.
IntArray<Int>?

The number of trailing encrypted bytes in each sub-sample.
Int

The number of subSamples that make up the buffer's contents.

Public constructors

CryptoInfo

CryptoInfo()

Public functions

increaseClearDataFirstSubSampleBy

fun increaseClearDataFirstSubSampleBy(count: Int): Unit

Increases the number of clear data for the first sub sample by count.

If count is 0, this method is a no-op. Otherwise, it adds count to numBytesOfClearData[0].

If numBytesOfClearData is null (which is permitted), this method will instantiate it to a new int[1].

Parameters
count: Int

The number of bytes to be added to the first subSample of numBytesOfClearData.

set

fun set(
    numSubSamples: Int,
    numBytesOfClearData: IntArray!,
    numBytesOfEncryptedData: IntArray!,
    key: ByteArray!,
    iv: ByteArray!,
    @C.CryptoMode mode: Int,
    encryptedBlocks: Int,
    clearBlocks: Int
): Unit
See also
set

Public properties

clearBlocks

val clearBlocks: Int
See also
MediaCodec.CryptoInfo.Pattern

encryptedBlocks

val encryptedBlocks: Int
See also
MediaCodec.CryptoInfo.Pattern

frameworkCryptoInfo

val frameworkCryptoInfo: MediaCodec.CryptoInfo!

iv

val iv: ByteArray<Byte>?

The 16 byte initialization vector. If the initialization vector of the content is shorter than 16 bytes, 0 byte padding is appended to extend the vector to the required 16 byte length.

See also
iv

key

val key: ByteArray<Byte>?

The 16 byte key id.

See also
key

mode

@C.CryptoMode
val mode: Int

The type of encryption that has been applied. Must be one of the C.CryptoMode values.

See also
mode

numBytesOfClearData

val numBytesOfClearData: IntArray<Int>?

The number of leading unencrypted bytes in each sub-sample. If null, all bytes are treated as encrypted and numBytesOfEncryptedData must be specified.

See also
numBytesOfClearData

numBytesOfEncryptedData

val numBytesOfEncryptedData: IntArray<Int>?

The number of trailing encrypted bytes in each sub-sample. If null, all bytes are treated as clear and numBytesOfClearData must be specified.

See also
numBytesOfEncryptedData

numSubSamples

val numSubSamples: Int

The number of subSamples that make up the buffer's contents.

See also
numSubSamples