MediaDescrambler.Descramble Method
Definition
Important
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Descramble a ByteBuffer of data described by a
android.media.MediaCodec.CryptoInfo structure.
[Android.Runtime.Register("descramble", "(Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;Landroid/media/MediaCodec$CryptoInfo;)I", "", ApiSince=26)]
public int Descramble (Java.Nio.ByteBuffer srcBuf, Java.Nio.ByteBuffer dstBuf, Android.Media.MediaCodec.CryptoInfo cryptoInfo);[<Android.Runtime.Register("descramble", "(Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;Landroid/media/MediaCodec$CryptoInfo;)I", "", ApiSince=26)>]
member this.Descramble : Java.Nio.ByteBuffer * Java.Nio.ByteBuffer * Android.Media.MediaCodec.CryptoInfo -> intParameters
- srcBuf
- ByteBuffer
ByteBuffer containing the scrambled data, which starts at srcBuf.position().
- dstBuf
- ByteBuffer
ByteBuffer to hold the descrambled data, which starts at dstBuf.position().
- cryptoInfo
- MediaCodec.CryptoInfo
a android.media.MediaCodec.CryptoInfo structure
describing the subsamples contained in srcBuf. The iv and mode fields in
CryptoInfo are not used. key[0] contains the MPEG2TS scrambling control bits
(as defined in ETSI TS 100 289 (2011): "Digital Video Broadcasting (DVB);
Support for use of the DVB Scrambling Algorithm version 3 within digital
broadcasting systems"), and the value must be one of #SCRAMBLE_CONTROL_UNSCRAMBLED,
#SCRAMBLE_CONTROL_RESERVED, #SCRAMBLE_CONTROL_EVEN_KEY or
#SCRAMBLE_CONTROL_ODD_KEY. key[1] is a set of bit flags, with the
only possible bit being #SCRAMBLE_FLAG_PES_HEADER currently.
key[2~15] are not used.
Returns
number of bytes that have been successfully descrambled, with negative values indicating errors.
- Attributes
Remarks
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.