PNG

Types

class DecodingContext(val header: PNG.Header)

class Header(val width: Int, val height: Int, val bitsPerChannel: Int, val colorspace: PNG.Colorspace, val compressionmethod: Int, val filtermethod: Int, val interlacemethod: Int)

InterlacedPass

data class InterlacedPass(val startingRow: Int, val startingCol: Int, val rowIncrement: Int, val colIncrement: Int, val blockHeight: Int, val blockWidth: Int)

Properties

decodingProps

open override val decodingProps: ImageDecodingProps

extensions

val extensions: Set<String>

InterlacedPasses

val InterlacedPasses: List<PNG.InterlacedPass>

MAGIC1

const val MAGIC1: Int

MAGIC2

const val MAGIC2: Int = 218765834

NormalPasses

val NormalPasses: List<PNG.InterlacedPass>

Functions

applyFilter

fun applyFilter(filter: Int, p: UByteArrayInt, c: UByteArrayInt, bpp: Int, size: Int = c.size)

check

fun check(s: SyncStream, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): Boolean

decode

suspend fun decode(file: VfsFile): Bitmap

open suspend override fun decode(file: VfsFile, props: ImageDecodingProps): Bitmap

suspend fun decode(s: AsyncStream, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): Bitmap

suspend fun decode(s: AsyncStream, filename: String): Bitmap

fun decode(s: SyncStream, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): Bitmap

fun decode(data: ByteArray, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): Bitmap

Decodes a given data byte array to a bitmap based on the image format with optional extra prop properties.

decodeHeader

open override fun decodeHeader(s: SyncStream, props: ImageDecodingProps): ImageInfo?

decodeHeaderSuspend

suspend fun decodeHeaderSuspend(file: VfsFile, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): ImageInfo?

open suspend fun decodeHeaderSuspend(s: AsyncStream, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): ImageInfo?

decodeSuspend

open suspend override fun decodeSuspend(data: ByteArray, props: ImageDecodingProps): Bitmap

encode

fun encode(bitmap: Bitmap, props: ImageEncodingProps = ImageEncodingProps("unknown")): ByteArray

fun encode(image: ImageData, props: ImageEncodingProps = ImageEncodingProps("unknown")): ByteArray

fun encode(frames: List<ImageFrame>, props: ImageEncodingProps = ImageEncodingProps("unknown")): ByteArray

encodeSuspend

open suspend override fun encodeSuspend(image: ImageDataContainer, props: ImageEncodingProps): ByteArray

encodeSuspend

suspend fun ImageFormatEncoder.encodeSuspend(bitmap: Bitmap, props: ImageEncodingProps = ImageEncodingProps("unknown")): ByteArray

listFormats

fun ImageFormat.listFormats(): Set<ImageFormat>

paethPredictor

fun paethPredictor(a: Int, b: Int, c: Int): Int

plus

operator fun ImageFormat.plus(format: ImageFormat): ImageFormat

operator fun ImageFormat.plus(formats: List<ImageFormat>): ImageFormat

read

suspend fun read(file: VfsFile): Bitmap

suspend fun read(file: VfsFile, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): ImageData

fun read(s: SyncStream, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): Bitmap

fun read(s: SyncStream, filename: String = "unknown"): Bitmap

fun read(s: ByteArray, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): Bitmap

fun read(s: ByteArray, filename: String): Bitmap

readImage

open override fun readImage(s: SyncStream, props: ImageDecodingProps): ImageData

readImageContainer

open fun readImageContainer(s: SyncStream, props: ImageDecodingProps = ImageDecodingProps.DEFAULT): ImageDataContainer

toProps

fun ImageFormat.toProps(props: ImageDecodingProps = ImageDecodingProps.DEFAULT): ImageDecodingProps

toString

open override fun toString(): String

updateHistoriogram

fun updateHistoriogram(historiogram: UByteArrayInt, data: UByteArrayInt)

writeImage

open override fun writeImage(image: ImageData, s: SyncStream, props: ImageEncodingProps)