zrle

package

v0.0.0-...-53445cd Latest Latest Go to latest Published: Sep 15, 2017 License: MIT Imports: 5 Imported by: 1

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Repository

github.com/CambridgeSoftwareLtd/go-vnc

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
func CalcRuns(buffer io.Reader, maxVal int) (int, int)
func TilesToPixels(width int, height int, tiles []Tile) [][]CPixel
type CPixel
type PackedPaletteEncoding
- func (PackedPaletteEncoding) Read(buf io.Reader, t *Tile) (int, error)
- func (PackedPaletteEncoding) String() string
- func (PackedPaletteEncoding) SubType() SubType
type PrleEncoding
- func (PrleEncoding) Read(buf io.Reader, t *Tile) (int, error)
- func (PrleEncoding) String() string
- func (PrleEncoding) SubType() SubType
type RawEncoding
- func (RawEncoding) Read(buf io.Reader, t *Tile) (bytesRead int, err error)
- func (RawEncoding) String() string
- func (RawEncoding) SubType() SubType
type RleEncoding
- func (RleEncoding) Read(buf io.Reader, t *Tile) (int, error)
- func (RleEncoding) String() string
- func (RleEncoding) SubType() SubType
type SolidEncoding
- func (SolidEncoding) Read(buf io.Reader, t *Tile) (int, error)
- func (SolidEncoding) String() string
- func (SolidEncoding) SubType() SubType
type SubType
type Subencoding
- func GetSubencoding(b byte) (encoding Subencoding, err error)
type Tile
- func CreateTiles(width int, height int) (tiles []Tile)
- func (t Tile) String() string
- func (t Tile) ToPixelGrid() [][]CPixel
type TileConfig
type ZlibStream
- func (z *ZlibStream) Read(p []byte) (n int, e error)
- func (z *ZlibStream) Write(p []byte) (n int, e error)

Constants ¶

View Source

const (
	// TileWidth is the expected, standard width of a tile
	TileWidth int = 64
	// TileHeight is the expected, standard height of a tile
	TileHeight = 64
)

Variables ¶

This section is empty.

Functions ¶

func CalcRuns ¶

func CalcRuns(buffer io.Reader, maxVal int) (int, int)

CalcRuns calculates the length of a single-pixel run, in bytes

func TilesToPixels ¶

func TilesToPixels(width int, height int, tiles []Tile) [][]CPixel

TilesToPixels converts a grid of tiles to CPIXEL data

Types ¶

type CPixel ¶

type CPixel []byte

CPixel defines the structure of a CPIXEL

type PackedPaletteEncoding ¶

type PackedPaletteEncoding struct{}

func (PackedPaletteEncoding) Read ¶

func (PackedPaletteEncoding) Read(buf io.Reader, t *Tile) (int, error)

func (PackedPaletteEncoding) String ¶

func (PackedPaletteEncoding) String() string

func (PackedPaletteEncoding) SubType ¶

func (PackedPaletteEncoding) SubType() SubType

type PrleEncoding ¶

type PrleEncoding struct{}

func (PrleEncoding) Read ¶

func (PrleEncoding) Read(buf io.Reader, t *Tile) (int, error)

func (PrleEncoding) String ¶

func (PrleEncoding) String() string

func (PrleEncoding) SubType ¶

func (PrleEncoding) SubType() SubType

type RawEncoding ¶

type RawEncoding struct{}

func (RawEncoding) Read ¶

func (RawEncoding) Read(buf io.Reader, t *Tile) (bytesRead int, err error)

func (RawEncoding) String ¶

func (RawEncoding) String() string

func (RawEncoding) SubType ¶

func (RawEncoding) SubType() SubType

type RleEncoding ¶

type RleEncoding struct{}

func (RleEncoding) Read ¶

func (RleEncoding) Read(buf io.Reader, t *Tile) (int, error)

func (RleEncoding) String ¶

func (RleEncoding) String() string

func (RleEncoding) SubType ¶

func (RleEncoding) SubType() SubType

type SolidEncoding ¶

type SolidEncoding struct{}

func (SolidEncoding) Read ¶

func (SolidEncoding) Read(buf io.Reader, t *Tile) (int, error)

func (SolidEncoding) String ¶

func (SolidEncoding) String() string

func (SolidEncoding) SubType ¶

func (SolidEncoding) SubType() SubType

type SubType ¶

type SubType uint8

SubType defines the structure of a ZLRE sub-encoding type

type Subencoding ¶

type Subencoding interface {
	SubType() SubType
	Read(buf io.Reader, t *Tile) (int, error)
	String() string
}

Subencoding defines a subencoding structure

func GetSubencoding ¶

func GetSubencoding(b byte) (encoding Subencoding, err error)

GetSubencoding returns the sub-encoding of a ZRLE data stream

type Tile ¶

type Tile struct {
	X, Y, Width, Height, BytesPerCPixel, SubType int
	Pixels                                       []CPixel
}

Tile defines a tile

func CreateTiles ¶

func CreateTiles(width int, height int) (tiles []Tile)

CreateTiles creates a grid of tiles based on a width and height

func (Tile) String ¶

func (t Tile) String() string

func (Tile) ToPixelGrid ¶

func (t Tile) ToPixelGrid() [][]CPixel

ToPixelGrid converts a tile into a CPIXEL grid

type TileConfig ¶

type TileConfig struct {
	// contains filtered or unexported fields
}

TileConfig defines the underlying structure of all tiles

type ZlibStream ¶

type ZlibStream struct {
	// contains filtered or unexported fields
}

func (*ZlibStream) Read ¶

func (z *ZlibStream) Read(p []byte) (n int, e error)

func (*ZlibStream) Write ¶

func (z *ZlibStream) Write(p []byte) (n int, e error)

Source Files ¶

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