Struct EncryptedFormat

pub struct EncryptedFormat {
    pub init_vector: Option<Vec<u8>>,
    pub subsamples: Option<Vec<SubsampleEntry>>,
    pub pattern: Option<EncryptionPattern>,
    pub scheme: Option<String>,
    pub key_id: Option<Vec<u8>>,
    /* private fields */
}

EncryptedFormat

The stream format details payload of a decrypting stream processor. This is a sparsely populated table to specify parameters necessary for decryption other than the data stream. It is only necessary to update fields if they changed, but not an error if the same value is repeated.

Fields

init_vector: Option<Vec<u8>>

init_vector is used in combination with a key and a block of content to create the first cipher block in a chain and derive subsequent cipher blocks in a cipher block chain. Usage:

• It is required to be set prior to the delivery of input packets to a decryptor.
• This may be changed multiple times during a data stream.

subsamples: Option<Vec<SubsampleEntry>>

subsamples is used to identify the clear and encrypted portions of a subsample. Usage:

• For whole sample encryption, this parameter should not be sent.
• This may be changed multiple times during a data stream.

pattern: Option<EncryptionPattern>

pattern is used to identify the clear and encrypted blocks for pattern based encryption. Usage:

• This is not allowed for CENC and CBC1 and required for CENS and CBCS.
• If required, it must be set prior to the delivery of input packets to a decryptor.
• This may be changed multiple times during a data stream.

scheme: Option<String>

scheme specifies which encryption scheme to use, such as fuchsia.media.ENCRYPTION_SCHEME_CENC. Usage:

• It is required to be set prior to delivery of input packets.
• Changing the scheme mid-stream is only permitted in some scenarios. Once an encrypted scheme is selected for a stream, the scheme may only be set to fuchsia.media.ENCRYPTION_SCHEME_UNENCRYPTED or that same initial encrypted scheme. The scheme may be set to fuchsia.media.ENCRYPTION_SCHEME_UNENCRYPTED at any point.

key_id: Option<Vec<u8>>

key_id identifies the key that should be used for decrypting subsequent data. Usage:

• It is required to be set prior to delivery of input packets to a decryptor.
• This may be changed multiple times during a data stream.

Trait Implementations

impl Clone for EncryptedFormat

fn clone(&self) -> EncryptedFormat

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EncryptedFormat

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<D: ResourceDialect> Decode<EncryptedFormat, D> for EncryptedFormat

fn new_empty() -> Self

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, depth: Depth, ) -> Result<()>

Decodes an object of type T from the decoder’s buffers into self.

impl Default for EncryptedFormat

fn default() -> EncryptedFormat

Returns the “default value” for a type.

impl<D: ResourceDialect> Encode<EncryptedFormat, D> for &EncryptedFormat

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, depth: Depth, ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl PartialEq for EncryptedFormat

fn eq(&self, other: &EncryptedFormat) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TypeMarker for EncryptedFormat

type Owned = EncryptedFormat

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for EncryptedFormat

type Borrowed<'a> = &'a EncryptedFormat

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow(value: &<Self as TypeMarker>::Owned) -> Self::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Persistable for EncryptedFormat

impl StructuralPartialEq for EncryptedFormat