ArtNet.Packet.ArtVideoData (ArtNet v0.1.0)

Sends display data for extended video features.

The packet carries tile position, dimensions, and pixel data for an Art-Net video surface.

Packet layout

Part	Field	Description	Default	Size	Format
Header	`id`		fixed	8 bytes	`"Art-Net\\0"`
Header	`op_code`		`0xA040`	2 bytes	little-endian OpCode
Header	`prot_ver`		`14`	2 bytes	protocol version
Payload	`filler1`	Reserved byte, transmitted as zero.	`0`	1 byte	unsigned integer (8 bits)
Payload	`filler2`	Reserved byte, transmitted as zero.	`0`	1 byte	unsigned integer (8 bits)
Payload	`position_x`	Horizontal tile position for the video data.	required	1 byte	unsigned integer (8 bits)
Payload	`position_y`	Vertical tile position for the video data.	required	1 byte	unsigned integer (8 bits)
Payload	`length_x`	Horizontal pixel count represented by the data.	required	1 byte	unsigned integer (8 bits)
Payload	`length_y`	Vertical pixel count represented by the data.	required	1 byte	unsigned integer (8 bits)
Payload	`data`	Packed video data bytes.	required	variable (1 byte each)	list of unsigned integer (8 bits)

Summary

Types

t()

Functions

decode(data)

Decodes a complete Art-Net binary as this packet type.

encode(packet)

Encodes this packet struct into a complete Art-Net binary.

new(attrs)

Builds a validated packet struct from a map or keyword list.

new!(attrs)

Builds a validated packet struct from a map or keyword list.

op_code()

Returns the Art-Net OpCode value for this packet module.

require_version_header?()

Returns whether this packet includes the Art-Net protocol version header.

schema()

Returns the packet payload schema in declaration order.

Types

t()

@type t() :: %ArtNet.Packet.ArtVideoData{
  data: [:integer],
  filler1: :integer,
  filler2: :integer,
  length_x: :integer,
  length_y: :integer,
  position_x: :integer,
  position_y: :integer
}

Functions

decode(data)

@spec decode(binary()) :: {:ok, t()} | :error

Decodes a complete Art-Net binary as this packet type.

encode(packet)

@spec encode(t()) :: {:ok, binary()} | :error

Encodes this packet struct into a complete Art-Net binary.

new(attrs)

@spec new(map() | Keyword.t()) :: {:ok, t()} | {:error, ArtNet.EncodeError.t()}

Builds a validated packet struct from a map or keyword list.

new!(attrs)

@spec new!(map() | Keyword.t()) :: t()

Builds a validated packet struct from a map or keyword list.

Raises ArtNet.EncodeError when validation fails.

op_code()

@spec op_code() :: pos_integer()

Returns the Art-Net OpCode value for this packet module.

The OpCode is 0xA040.

require_version_header?()

@spec require_version_header?() :: boolean()

Returns whether this packet includes the Art-Net protocol version header.

schema()

Returns the packet payload schema in declaration order.