chunk

package

v0.0.0-...-2a0e038 Latest Latest Go to latest Published: Dec 5, 2021 License: MIT Imports: 4 Imported by: 0

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type Chunk struct {
	Data []byte // $dataSize bytes
	// contains filtered or unexported fields
}

Chunk represents one of the many chunks of a png file

func BuildIDATChunks(bytesBuff *bytes.Buffer, chunkSize uint32) []Chunk

BuildIDATChunks will create a bunch of IDAT chunks from a compressed rawBytes array

func CreateChunk(data []byte, tipo []byte) Chunk

CreateChunk create a new chunk with the desired options

func Parse(index *uint32, data []byte) Chunk

Parse converts a byte array into chunk

func (r *Chunk) CalcCRC() uint32

CalcCRC returns a recalculated version of the CRC

func (r *Chunk) GetCRC() uint32

GetCRC returns CRC in integer

func (r *Chunk) GetDataSize() uint32

GetDataSize returns dataSize in integer

func (r *Chunk) GetType() string

GetType returns chunk type

func (r *Chunk) SetCRC(ncrc []byte)

SetCRC sets the CRC

func (r *Chunk) SetDataSize(size []byte)

SetDataSize set chunk dataSize field

func (r Chunk) String() string

String String representation of chunk

func (r *Chunk) ToBytes() []byte

ToBytes Chunk byte representation