README
- ::outputDecodeError::output
- ::to_stringDecodeError::to_string
- ::outputEncodeError::output
- ::to_stringEncodeError::to_string
- ::equalColorType::equal
- ::not_equalColorType::not_equal
- ::to_reprColorType::to_repr
- ::equalIhdrData::equal
- ::not_equalIhdrData::not_equal
- ::to_reprIhdrData::to_repr
- ::equalImageData::equal
- ::not_equalImageData::not_equal
- ::to_reprImageData::to_repr
- ::equalImageFormat::equal
- ::not_equalImageFormat::not_equal
- ::to_reprImageFormat::to_repr
- ::equalResizeMethod::equal
- ::not_equalResizeMethod::not_equal
- ::to_reprResizeMethod::to_repr
- ::equalStreamImageInfo::equal
- ::not_equalStreamImageInfo::not_equal
- ::to_reprStreamImageInfo::to_repr
V
decode_bmp
V
decode_bmp_stream
V
decode_image_stream
V
decode_jpeg
V
decode_png
V
decode_png_stream
V
encode_bmp
V
encode_jpeg
V
encode_png
V
package_name
V
resize

svgdiff-image-compat

WIP image codec primitives for MoonBit (PNG-first).

moonbit

image

png

encoder

decoder

Download zip

Author

Milky2018

Version

0.1.0

License

Apache-2.0

Repository

github.com/moonbit-community/svgdiff

Last updated

9 days ago

Downloads

Dependencies

mizchi/zlib0.4.10

#mizchi/image

Image codec primitives for MoonBit (no external dependencies except mizchi/zlib).

#Features

PNG decode / encode (RGBA8, adaptive row filtering)
BMP decode / encode (24-bit uncompressed)
JPEG baseline decode / encode
Resize with Nearest / Bilinear / Bicubic interpolation

All decoded images are normalized to ImageData (RGBA8 buffer).

#Install

moon add mizchi/image

#Usage

// PNG decode → resize → encode
let img = @image.decode_png(png_bytes)
let resized = @image.resize(img, 128, 128, Bilinear)
let out = @image.encode_png(resized)

// JPEG encode (quality defaults to 85)
let jpg = @image.encode_jpeg(resized)

// Stream decode (PNG/BMP auto detect)
let rows : Array[Bytes] = []
let info = @image.decode_image_stream(
  image_bytes,
  on_row=fn(_y, row) { rows.push(row) },
)
inspect((info.format, info.width, info.height))

#API

pub fn decode_png(Bytes) -> ImageData raise DecodeError
pub fn decode_png_stream(Bytes, on_row~ : (Int, Bytes) -> Unit) -> IhdrData raise DecodeError
pub fn decode_image_stream(Bytes, on_row~ : (Int, Bytes) -> Unit) -> StreamImageInfo raise DecodeError
pub fn encode_png(ImageData) -> Bytes raise EncodeError
pub fn decode_bmp(Bytes) -> ImageData raise DecodeError
pub fn decode_bmp_stream(Bytes, on_row~ : (Int, Bytes) -> Unit) -> (Int, Int) raise DecodeError
pub fn encode_bmp(ImageData) -> Bytes raise EncodeError
pub fn decode_jpeg(Bytes) -> ImageData raise DecodeError
pub fn encode_jpeg(ImageData, quality? : Int = 85) -> Bytes raise EncodeError
pub fn resize(ImageData, Int, Int, ResizeMethod) -> ImageData raise EncodeError

#Types

pub(all) struct ImageData { width : Int; height : Int; data : Bytes }
pub(all) enum ResizeMethod { Nearest; Bilinear; Bicubic }

#Targets

Works on js, native, and wasm-gc backends.

#License

Apache-2.0

DecodeError

source

pub(all) suberror DecodeError {
  InvalidSignature(String)
  InvalidChunkCrc(String)
  MissingChunk(String)
  UnsupportedFeature(String)
  CorruptData(String)
}

impl Show for DecodeError

DecodeError::output

source

fn DecodeError::output(self : DecodeError, logger : &Logger) -> Unit

DecodeError::to_string

source

fn DecodeError::to_string(self : DecodeError) -> String

EncodeError

source

pub(all) suberror EncodeError {
  InvalidDimensions(String)
  InvalidData(String)
}

impl Show for EncodeError

EncodeError::output

source

fn EncodeError::output(self : EncodeError, logger : &Logger) -> Unit

EncodeError::to_string

source

fn EncodeError::to_string(self : EncodeError) -> String

ColorType

source

pub enum ColorType {
  Grayscale
  Rgb
  Indexed
  GrayscaleAlpha
  Rgba
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

ColorType::equal

source

fn ColorType::equal(ColorType, ColorType) -> Bool

ColorType::not_equal

source

fn ColorType::not_equal(x : ColorType, y : ColorType) -> Bool

ColorType::to_repr

source

fn ColorType::to_repr(ColorType) -> @moonbitlang/core/debug.Repr
Repr

IhdrData

source

pub(all) struct IhdrData {
  width : Int
  height : Int
  bit_depth : Int
  color_type : ColorType
  compression : Int
  filter : Int
  interlace : Int
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

IhdrData::equal

source

fn IhdrData::equal(IhdrData, IhdrData) -> Bool

IhdrData::not_equal

source

fn IhdrData::not_equal(x : IhdrData, y : IhdrData) -> Bool

IhdrData::to_repr

source

fn IhdrData::to_repr(IhdrData) -> @moonbitlang/core/debug.Repr
Repr

ImageData

source

pub(all) struct ImageData {
  width : Int
  height : Int
  data : Bytes
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

ImageData::equal

source

fn ImageData::equal(ImageData, ImageData) -> Bool

ImageData::not_equal

source

fn ImageData::not_equal(x : ImageData, y : ImageData) -> Bool

ImageData::to_repr

source

fn ImageData::to_repr(ImageData) -> @moonbitlang/core/debug.Repr
Repr

ImageFormat

source

pub(all) enum ImageFormat {
  Png
  Bmp
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

ImageFormat::equal

source

fn ImageFormat::equal(ImageFormat, ImageFormat) -> Bool

ImageFormat::not_equal

source

fn ImageFormat::not_equal(x : ImageFormat, y : ImageFormat) -> Bool

ImageFormat::to_repr

source

fn ImageFormat::to_repr(ImageFormat) -> @moonbitlang/core/debug.Repr
Repr

ResizeMethod

source

pub(all) enum ResizeMethod {
  Nearest
  Bilinear
  Bicubic
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

ResizeMethod::equal

source

fn ResizeMethod::equal(ResizeMethod, ResizeMethod) -> Bool

ResizeMethod::not_equal

source

fn ResizeMethod::not_equal(x : ResizeMethod, y : ResizeMethod) -> Bool

ResizeMethod::to_repr

source

fn ResizeMethod::to_repr(ResizeMethod) -> @moonbitlang/core/debug.Repr
Repr

StreamImageInfo

source

pub(all) struct StreamImageInfo {
  format : ImageFormat
  width : Int
  height : Int
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

StreamImageInfo::equal

source

fn StreamImageInfo::equal(StreamImageInfo, StreamImageInfo) -> Bool

StreamImageInfo::not_equal

source

fn StreamImageInfo::not_equal(x : StreamImageInfo, y : StreamImageInfo) -> Bool

StreamImageInfo::to_repr

source

fn StreamImageInfo::to_repr(StreamImageInfo) -> @moonbitlang/core/debug.Repr
Repr

decode_bmp

source

fn decode_bmp(raw : Bytes) -> ImageData raise DecodeError

decode_bmp_stream

source

fn decode_bmp_stream(raw : Bytes, on_row~ : (Int, Bytes) -> Unit) -> (Int, Int) raise DecodeError

decode_image_stream

source

fn decode_image_stream(raw : Bytes, on_row~ : (Int, Bytes) -> Unit) -> StreamImageInfo raise DecodeError

decode_jpeg

source

fn decode_jpeg(data : Bytes) -> ImageData raise DecodeError

decode_png

source

fn decode_png(raw : Bytes) -> ImageData raise DecodeError

decode_png_stream

source

fn decode_png_stream(raw : Bytes, on_row~ : (Int, Bytes) -> Unit) -> IhdrData raise DecodeError

encode_bmp

source

fn encode_bmp(img : ImageData) -> Bytes raise EncodeError

encode_jpeg

source

fn encode_jpeg(img : ImageData, quality? : Int) -> Bytes raise EncodeError

encode_png

source

fn encode_png(img : ImageData) -> Bytes raise EncodeError

package_name

source

fn package_name() -> String

Project marker.

resize

source

fn resize(img : ImageData, new_width : Int, new_height : Int, resize_method : ResizeMethod) -> ImageData raise EncodeError

Source Files

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svgdiff-image-compat

#mizchi/image

#Features

#Install

#Usage

#API

#Types

#Targets

#License

#DecodeError

#DecodeError::output

#DecodeError::to_string

#EncodeError

#EncodeError::output

#EncodeError::to_string

#ColorType

#ColorType::equal

#ColorType::not_equal

#ColorType::to_repr

#IhdrData

#IhdrData::equal

#IhdrData::not_equal

#IhdrData::to_repr

#ImageData

#ImageData::equal

#ImageData::not_equal

#ImageData::to_repr

#ImageFormat

#ImageFormat::equal

#ImageFormat::not_equal

#ImageFormat::to_repr

#ResizeMethod

#ResizeMethod::equal

#ResizeMethod::not_equal

#ResizeMethod::to_repr

#StreamImageInfo

#StreamImageInfo::equal

#StreamImageInfo::not_equal

#StreamImageInfo::to_repr

#decode_bmp

#decode_bmp_stream

#decode_image_stream

#decode_jpeg

#decode_png

#decode_png_stream

#encode_bmp

#encode_jpeg

#encode_png

#package_name

#resize

Source Files

DecodeError

DecodeError::output

DecodeError::to_string

EncodeError

EncodeError::output

EncodeError::to_string

ColorType

ColorType::equal

ColorType::not_equal

ColorType::to_repr

IhdrData

IhdrData::equal

IhdrData::not_equal

IhdrData::to_repr

ImageData

ImageData::equal

ImageData::not_equal

ImageData::to_repr

ImageFormat

ImageFormat::equal

ImageFormat::not_equal

ImageFormat::to_repr

ResizeMethod

ResizeMethod::equal

ResizeMethod::not_equal

ResizeMethod::to_repr

StreamImageInfo

StreamImageInfo::equal

StreamImageInfo::not_equal

StreamImageInfo::to_repr

decode_bmp

decode_bmp_stream

decode_image_stream

decode_jpeg

decode_png

decode_png_stream

encode_bmp

encode_jpeg

encode_png

package_name

resize