Struct DevEncoded 

pub struct DevEncoded {
    pub format: Scalar<str>,
    pub data: Spectrum<u8>,
}

A value of an encoded attribute or command: octets, and the name of the format they are in, which is how a device sends what Tango has no type for, a compressed image above all. Both share the message they were decoded out of.

Tango only has such a value as a scalar, an attribute of it being neither a spectrum nor an image.

Fields

format: Scalar<str>

The name of the format the octets are in, such as JPEG_RGB, which is only a convention between the device and its clients.

data: Spectrum<u8>

The octets themselves.

Implementations

impl DevEncoded

pub fn new( format: impl Into<Scalar<str>>, data: impl Into<Spectrum<u8>>, ) -> Self

An encoded value of that format, out of its octets.

impl DevEncoded

pub const JPEG_RGB: &'static str = "JPEG_RGB"

The format of a JPEG image in color, see [Self::to_image].

pub const JPEG_GRAY8: &'static str = "JPEG_GRAY8"

The format of a JPEG image in shades of gray, see [Self::to_image].

pub const GRAY8: &'static str = "GRAY8"

The format of raw 8 bits gray pixels, see EncodedPixels::Gray8.

pub const GRAY16: &'static str = "GRAY16"

The format of raw 16 bits gray pixels, see EncodedPixels::Gray16.

pub const RGB24: &'static str = "RGB24"

The format of raw 24 bits color pixels, see EncodedPixels::Rgb24.

impl DevEncoded

pub fn to_pixels(&self) -> Result<EncodedPixels, Error>

The pixels of an image in one of the raw formats, failing for any other format, JPEG included, see [Self::to_image] for that one.

pub fn from_pixels(pixels: &EncodedPixels) -> Result<Self, Error>

Encode these pixels in their raw format, failing for an image wider or higher than the 65535 pixels its dimensions have room for.

Trait Implementations

impl AttrData for DevEncoded

const DATA_KIND: AttrDataKind = AttrDataKind::Encoded

const DATA_FORMAT: AttrDataFormat = AttrDataFormat::Scalar

impl Clone for DevEncoded

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl CommandData for DevEncoded

const DATA_KIND: CommandDataKind = CommandDataKind::Encoded

impl Debug for DevEncoded

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

Formats the value using the given formatter.

impl From<DevEncoded> for Value

fn from(encoded: DevEncoded) -> Self

Converts to this type from the input type.

impl PartialEq for DevEncoded

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DevEncoded

impl<'a> TryFrom<&'a Value> for &'a DevEncoded

type Error = Error

The type returned in the event of a conversion error.

fn try_from(data: &'a Value) -> Result<Self, Error>

Performs the conversion.

impl TryFrom<Value> for DevEncoded

type Error = Error

The type returned in the event of a conversion error.

fn try_from(data: Value) -> Result<Self, Error>

Performs the conversion.