foster/denoland-deno
0
0
Fork 0
mirror of https://github.com/denoland/deno.git synced 2025-02-01 12:16:11 -05:00
Code Issues Packages 1 Wiki Activity

clean up

Browse source
This commit is contained in:
Hajime-san 2024-09-07 21:57:32 +09:00
parent 1e214675c0
commit 1f7524a47c
8 changed files with 1229 additions and 1185 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

116
ext/canvas/01_image.js
View file

@ -1,7 +1,7 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { internals, primordials } from "ext:core/mod.js";
import { op_image_process } from "ext:core/ops";
import { op_create_image_bitmap } from "ext:core/ops";
import * as webidl from "ext:deno_webidl/00_webidl.js";
import { DOMException } from "ext:deno_web/01_dom_exception.js";
import { createFilteredInspectProxy } from "ext:deno_console/01_console.js";
@ -11,7 +11,6 @@ const {
ObjectPrototypeIsPrototypeOf,
Symbol,
SymbolFor,
TypeError,
TypedArrayPrototypeGetBuffer,
Uint8Array,
PromiseReject,
@ -189,6 +188,7 @@ function createImageBitmap(
"Argument 6",
);
// 1.
if (sw === 0) {
return PromiseReject(new RangeError("sw has to be greater than 0"));
}
@ -198,6 +198,7 @@ function createImageBitmap(
}
}
// 2.
if (options.resizeWidth === 0) {
return PromiseReject(
new DOMException(
@ -217,70 +218,69 @@ function createImageBitmap(
const imageBitmap = webidl.createBranded(ImageBitmap);
// 6. Switch on image
// 3.
const isBlob = ObjectPrototypeIsPrototypeOf(BlobPrototype, image);
const isImageData = ObjectPrototypeIsPrototypeOf(ImageDataPrototype, image);
if (
isImageData ||
isBlob
) {
return (async () => {
let width = 0;
let height = 0;
let mimeType = "";
let imageBitmapSource, buf, predefinedColorSpace;
if (isBlob) {
imageBitmapSource = imageBitmapSources[0];
buf = new Uint8Array(await image.arrayBuffer());
mimeType = sniffImage(image.type);
}
if (isImageData) {
width = image[_width];
height = image[_height];
imageBitmapSource = imageBitmapSources[1];
buf = new Uint8Array(TypedArrayPrototypeGetBuffer(image[_data]));
predefinedColorSpace = image[_colorSpace];
}
let sx;
if (typeof sxOrOptions === "number") {
sx = sxOrOptions;
}
const processedImage = op_image_process(
buf,
{
width,
height,
sx,
sy,
sw,
sh,
imageOrientation: options.imageOrientation ?? "from-image",
premultiplyAlpha: options.premultiplyAlpha ?? "default",
predefinedColorSpace: predefinedColorSpace ?? "srgb",
colorSpaceConversion: options.colorSpaceConversion ?? "default",
resizeWidth: options.resizeWidth,
resizeHeight: options.resizeHeight,
resizeQuality: options.resizeQuality ?? "low",
imageBitmapSource,
mimeType,
},
);
imageBitmap[_bitmapData] = processedImage.data;
imageBitmap[_width] = processedImage.width;
imageBitmap[_height] = processedImage.height;
return imageBitmap;
})();
} else {
if (!isBlob && !isImageData) {
return PromiseReject(
new TypeError(
`${prefix}: The provided value is not of type '(${
new DOMException(
`${prefix}: The provided value for 'image' is not of type '(${
ArrayPrototypeJoin(imageBitmapSources, " or ")
})'.`,
"InvalidStateError",
),
);
}
// 4.
return (async () => {
let width = 0;
let height = 0;
let mimeType = "";
let imageBitmapSource, buf, predefinedColorSpace;
if (isBlob) {
imageBitmapSource = imageBitmapSources[0];
buf = new Uint8Array(await image.arrayBuffer());
mimeType = sniffImage(image.type);
}
if (isImageData) {
width = image[_width];
height = image[_height];
imageBitmapSource = imageBitmapSources[1];
buf = new Uint8Array(TypedArrayPrototypeGetBuffer(image[_data]));
predefinedColorSpace = image[_colorSpace];
}
let sx;
if (typeof sxOrOptions === "number") {
sx = sxOrOptions;
}
// TODO(Hajime-san): this should be real async
const processedImage = op_create_image_bitmap(
buf,
{
width,
height,
sx,
sy,
sw,
sh,
imageOrientation: options.imageOrientation ?? "from-image",
premultiplyAlpha: options.premultiplyAlpha ?? "default",
predefinedColorSpace: predefinedColorSpace ?? "srgb",
colorSpaceConversion: options.colorSpaceConversion ?? "default",
resizeWidth: options.resizeWidth,
resizeHeight: options.resizeHeight,
resizeQuality: options.resizeQuality ?? "low",
imageBitmapSource,
mimeType,
},
);
imageBitmap[_bitmapData] = processedImage.data;
imageBitmap[_width] = processedImage.width;
imageBitmap[_height] = processedImage.height;
return imageBitmap;
})();
}
function getBitmapData(imageBitmap) {

14
ext/canvas/error.rs
View file

@ -1,6 +1,7 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use deno_core::error::AnyError;
use std::borrow::Cow;
use std::fmt;
#[derive(Debug)]
@ -28,3 +29,16 @@ pub fn get_error_class_name(e: &AnyError) -> Option<&'static str> {
e.downcast_ref::<DOMExceptionInvalidStateError>()
.map(|_| "DOMExceptionInvalidStateError")
}
/// Returns a string that represents the error message for the image.
pub(crate) fn image_error_message<'a, T: Into<Cow<'a, str>>>(
opreation: T,
reason: T,
) -> String {
format!(
"An error has occurred while {}.
reason: {}",
opreation.into(),
reason.into(),
)
}

11
ext/canvas/idl.rs Normal file
View file

@ -0,0 +1,11 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use serde::Deserialize;
#[derive(Debug, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub enum PredefinedColorSpace {
Srgb,
#[serde(rename = "display-p3")]
DisplayP3,
}

89
ext/canvas/image_decoder.rs Normal file
View file

@ -0,0 +1,89 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::io::BufRead;
use std::io::BufReader;
use std::io::Cursor;
use std::io::Seek;
use deno_core::error::AnyError;
use image::codecs::bmp::BmpDecoder;
use image::codecs::gif::GifDecoder;
use image::codecs::ico::IcoDecoder;
use image::codecs::jpeg::JpegDecoder;
use image::codecs::png::PngDecoder;
use image::codecs::webp::WebPDecoder;
use image::DynamicImage;
use image::ImageDecoder;
use image::ImageError;
use crate::error::image_error_message;
use crate::error::DOMExceptionInvalidStateError;
//
// About the animated image
// > Blob .4
// > ... If this is an animated image, imageBitmap's bitmap data must only be taken from
// > the default image of the animation (the one that the format defines is to be used when animation is
// > not supported or is disabled), or, if there is no such image, the first frame of the animation.
// https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html
//
// see also browser implementations: (The implementation of Gecko and WebKit is hard to read.)
// https://source.chromium.org/chromium/chromium/src/+/bdbc054a6cabbef991904b5df9066259505cc686:third_party/blink/renderer/platform/image-decoders/image_decoder.h;l=175-189
//
pub(crate) trait ImageDecoderFromReader<'a, R: BufRead + Seek> {
fn to_decoder(reader: R) -> Result<Self, AnyError>
where
Self: Sized;
fn to_intermediate_image(self) -> Result<DynamicImage, AnyError>;
fn get_icc_profile(&mut self) -> Option<Vec<u8>>;
}
pub(crate) type ImageDecoderFromReaderType<'a> = BufReader<Cursor<&'a [u8]>>;
pub(crate) fn image_decoding_error(
error: ImageError,
) -> DOMExceptionInvalidStateError {
DOMExceptionInvalidStateError::new(&image_error_message(
"decoding",
&error.to_string(),
))
}
macro_rules! impl_image_decoder_from_reader {
($decoder:ty, $reader:ty) => {
impl<'a, R: BufRead + Seek> ImageDecoderFromReader<'a, R> for $decoder {
fn to_decoder(reader: R) -> Result<Self, AnyError>
where
Self: Sized,
{
match <$decoder>::new(reader) {
Ok(decoder) => Ok(decoder),
Err(err) => return Err(image_decoding_error(err).into()),
}
}
fn to_intermediate_image(self) -> Result<DynamicImage, AnyError> {
match DynamicImage::from_decoder(self) {
Ok(image) => Ok(image),
Err(err) => Err(image_decoding_error(err).into()),
}
}
fn get_icc_profile(&mut self) -> Option<Vec<u8>> {
match self.icc_profile() {
Ok(profile) => profile,
Err(_) => None,
}
}
}
};
}
// If PngDecoder decodes an animated image, it returns the default image if one is set, or the first frame if not.
impl_image_decoder_from_reader!(PngDecoder<R>, ImageDecoderFromReaderType);
impl_image_decoder_from_reader!(JpegDecoder<R>, ImageDecoderFromReaderType);
// The GifDecoder decodes the first frame.
impl_image_decoder_from_reader!(GifDecoder<R>, ImageDecoderFromReaderType);
impl_image_decoder_from_reader!(BmpDecoder<R>, ImageDecoderFromReaderType);
impl_image_decoder_from_reader!(IcoDecoder<R>, ImageDecoderFromReaderType);
// The WebPDecoder decodes the first frame.
impl_image_decoder_from_reader!(WebPDecoder<R>, ImageDecoderFromReaderType);

597
ext/canvas/image_ops.rs Normal file
View file

@ -0,0 +1,597 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use bytemuck::cast_slice;
use deno_core::error::AnyError;
use image::ColorType;
use image::DynamicImage;
use image::GenericImageView;
use image::ImageBuffer;
use image::Luma;
use image::LumaA;
use image::Pixel;
use image::Primitive;
use image::Rgb;
use image::Rgba;
use lcms2::PixelFormat;
use lcms2::Pod;
use lcms2::Profile;
use lcms2::Transform;
use num_traits::NumCast;
use num_traits::SaturatingMul;
pub(crate) trait PremultiplyAlpha {
fn premultiply_alpha(&self) -> Self;
}
impl<T: Primitive> PremultiplyAlpha for LumaA<T> {
fn premultiply_alpha(&self) -> Self {
let max_t = T::DEFAULT_MAX_VALUE;
let mut pixel = [self.0[0], self.0[1]];
let alpha_index = pixel.len() - 1;
let alpha = pixel[alpha_index];
let normalized_alpha = alpha.to_f32().unwrap() / max_t.to_f32().unwrap();
if normalized_alpha == 0.0 {
return LumaA::<T>([pixel[0], pixel[alpha_index]]);
}
for rgb in pixel.iter_mut().take(alpha_index) {
*rgb = NumCast::from((rgb.to_f32().unwrap() * normalized_alpha).round())
.unwrap()
}
LumaA::<T>([pixel[0], pixel[alpha_index]])
}
}
impl<T: Primitive> PremultiplyAlpha for Rgba<T> {
fn premultiply_alpha(&self) -> Self {
let max_t = T::DEFAULT_MAX_VALUE;
let mut pixel = [self.0[0], self.0[1], self.0[2], self.0[3]];
let alpha_index = pixel.len() - 1;
let alpha = pixel[alpha_index];
let normalized_alpha = alpha.to_f32().unwrap() / max_t.to_f32().unwrap();
if normalized_alpha == 0.0 {
return Rgba::<T>([pixel[0], pixel[1], pixel[2], pixel[alpha_index]]);
}
for rgb in pixel.iter_mut().take(alpha_index) {
*rgb = NumCast::from((rgb.to_f32().unwrap() * normalized_alpha).round())
.unwrap()
}
Rgba::<T>([pixel[0], pixel[1], pixel[2], pixel[alpha_index]])
}
}
// make public if needed
fn process_premultiply_alpha<I, P, S>(image: &I) -> ImageBuffer<P, Vec<S>>
where
I: GenericImageView<Pixel = P>,
P: Pixel<Subpixel = S> + PremultiplyAlpha + 'static,
S: Primitive + 'static,
{
let (width, height) = image.dimensions();
let mut out = ImageBuffer::new(width, height);
for (x, y, pixel) in image.pixels() {
let pixel = pixel.premultiply_alpha();
out.put_pixel(x, y, pixel);
}
out
}
/// Premultiply the alpha channel of the image.
pub(crate) fn premultiply_alpha(
image: DynamicImage,
unmatch: Option<fn(ColorType) -> Result<DynamicImage, AnyError>>,
) -> Result<DynamicImage, AnyError> {
let color = image.color();
match color {
ColorType::La8 => Ok(DynamicImage::ImageLumaA8(process_premultiply_alpha(
&image.to_luma_alpha8(),
))),
ColorType::Rgba8 => Ok(DynamicImage::ImageRgba8(
process_premultiply_alpha(&image.to_rgba8()),
)),
ColorType::La16 => Ok(DynamicImage::ImageLumaA16(
process_premultiply_alpha(&image.to_luma_alpha16()),
)),
ColorType::Rgba16 => Ok(DynamicImage::ImageRgba16(
process_premultiply_alpha(&image.to_rgba16()),
)),
x => match unmatch {
Some(unmatch) => unmatch(x),
None => Ok(image),
},
}
}
pub(crate) trait UnpremultiplyAlpha {
/// To determine if the image is premultiplied alpha,
/// checking premultiplied RGBA value is one where any of the R/G/B channel values exceeds the alpha channel value.\
/// https://www.w3.org/TR/webgpu/#color-spaces
fn is_premultiplied_alpha(&self) -> bool;
fn unpremultiply_alpha(&self) -> Self;
}
impl<T: Primitive + SaturatingMul + Ord> UnpremultiplyAlpha for Rgba<T> {
fn is_premultiplied_alpha(&self) -> bool {
let max_t = T::DEFAULT_MAX_VALUE;
let pixel = [self.0[0], self.0[1], self.0[2]];
let alpha_index = self.0.len() - 1;
let alpha = self.0[alpha_index];
match pixel.iter().max() {
Some(rgb_max) => rgb_max < &max_t.saturating_mul(&alpha),
// usually doesn't reach here
None => false,
}
}
fn unpremultiply_alpha(&self) -> Self {
let max_t = T::DEFAULT_MAX_VALUE;
let mut pixel = [self.0[0], self.0[1], self.0[2], self.0[3]];
let alpha_index = pixel.len() - 1;
let alpha = pixel[alpha_index];
for rgb in pixel.iter_mut().take(alpha_index) {
*rgb = NumCast::from(
(rgb.to_f32().unwrap()
/ (alpha.to_f32().unwrap() / max_t.to_f32().unwrap()))
.round(),
)
.unwrap();
}
Rgba::<T>([pixel[0], pixel[1], pixel[2], pixel[alpha_index]])
}
}
impl<T: Primitive + SaturatingMul + Ord> UnpremultiplyAlpha for LumaA<T> {
fn is_premultiplied_alpha(&self) -> bool {
let max_t = T::DEFAULT_MAX_VALUE;
let pixel = [self.0[0]];
let alpha_index = self.0.len() - 1;
let alpha = self.0[alpha_index];
pixel[0] < max_t.saturating_mul(&alpha)
}
fn unpremultiply_alpha(&self) -> Self {
let max_t = T::DEFAULT_MAX_VALUE;
let mut pixel = [self.0[0], self.0[1]];
let alpha_index = pixel.len() - 1;
let alpha = pixel[alpha_index];
for rgb in pixel.iter_mut().take(alpha_index) {
*rgb = NumCast::from(
(rgb.to_f32().unwrap()
/ (alpha.to_f32().unwrap() / max_t.to_f32().unwrap()))
.round(),
)
.unwrap();
}
LumaA::<T>([pixel[0], pixel[alpha_index]])
}
}
// make public if needed
fn process_unpremultiply_alpha<I, P, S>(image: &I) -> ImageBuffer<P, Vec<S>>
where
I: GenericImageView<Pixel = P>,
P: Pixel<Subpixel = S> + UnpremultiplyAlpha + 'static,
S: Primitive + 'static,
{
let (width, height) = image.dimensions();
let mut out = ImageBuffer::new(width, height);
let is_premultiplied_alpha = image
.pixels()
.any(|(_, _, pixel)| pixel.is_premultiplied_alpha());
for (x, y, pixel) in image.pixels() {
let pixel = if is_premultiplied_alpha {
pixel.unpremultiply_alpha()
} else {
// return the original
pixel
};
out.put_pixel(x, y, pixel);
}
out
}
/// Invert the premultiplied alpha channel of the image.
pub(crate) fn unpremultiply_alpha(
image: DynamicImage,
unmatch: Option<fn(ColorType) -> Result<DynamicImage, AnyError>>,
) -> Result<DynamicImage, AnyError> {
match image.color() {
ColorType::La8 => Ok(DynamicImage::ImageLumaA8(
process_unpremultiply_alpha(&image.to_luma_alpha8()),
)),
ColorType::Rgba8 => Ok(DynamicImage::ImageRgba8(
process_unpremultiply_alpha(&image.to_rgba8()),
)),
ColorType::La16 => Ok(DynamicImage::ImageLumaA16(
process_unpremultiply_alpha(&image.to_luma_alpha16()),
)),
ColorType::Rgba16 => Ok(DynamicImage::ImageRgba16(
process_unpremultiply_alpha(&image.to_rgba16()),
)),
x => match unmatch {
Some(unmatch) => unmatch(x),
None => Ok(image),
},
}
}
// reference
// https://www.w3.org/TR/css-color-4/#color-conversion-code
fn srgb_to_linear<T: Primitive>(value: T) -> f32 {
if value.to_f32().unwrap() <= 0.04045 {
value.to_f32().unwrap() / 12.92
} else {
((value.to_f32().unwrap() + 0.055) / 1.055).powf(2.4)
}
}
// reference
// https://www.w3.org/TR/css-color-4/#color-conversion-code
fn linear_to_display_p3<T: Primitive>(value: T) -> f32 {
if value.to_f32().unwrap() <= 0.0031308 {
value.to_f32().unwrap() * 12.92
} else {
1.055 * value.to_f32().unwrap().powf(1.0 / 2.4) - 0.055
}
}
fn normalize_value_to_0_1<T: Primitive>(value: T) -> f32 {
value.to_f32().unwrap() / T::DEFAULT_MAX_VALUE.to_f32().unwrap()
}
fn unnormalize_value_from_0_1<T: Primitive>(value: f32) -> T {
NumCast::from(
(value.clamp(0.0, 1.0) * T::DEFAULT_MAX_VALUE.to_f32().unwrap()).round(),
)
.unwrap()
}
fn apply_conversion_matrix_srgb_to_display_p3<T: Primitive>(
r: T,
g: T,
b: T,
) -> (T, T, T) {
// normalize the value to 0.0 - 1.0
let (r, g, b) = (
normalize_value_to_0_1(r),
normalize_value_to_0_1(g),
normalize_value_to_0_1(b),
);
// sRGB -> Linear RGB
let (r, g, b) = (srgb_to_linear(r), srgb_to_linear(g), srgb_to_linear(b));
// Display-P3 (RGB) -> Display-P3 (XYZ)
//
// inv[ P3-D65 (D65) to XYZ ] * [ sRGB (D65) to XYZ ]
// http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
// https://fujiwaratko.sakura.ne.jp/infosci/colorspace/colorspace2_e.html
// [ sRGB (D65) to XYZ ]
#[rustfmt::skip]
let (m1x, m1y, m1z) = (
[0.4124564, 0.3575761, 0.1804375],
[0.2126729, 0.7151522, 0.0721750],
[0.0193339, 0.119_192, 0.9503041],
);
let (r, g, b) = (
r * m1x[0] + g * m1x[1] + b * m1x[2],
r * m1y[0] + g * m1y[1] + b * m1y[2],
r * m1z[0] + g * m1z[1] + b * m1z[2],
);
// inv[ P3-D65 (D65) to XYZ ]
#[rustfmt::skip]
let (m2x, m2y, m2z) = (
[ 2.493_497, -0.931_383_6, -0.402_710_8 ],
[ -0.829_489, 1.762_664_1, 0.023_624_687 ],
[ 0.035_845_83, -0.076_172_39, 0.956_884_5 ],
);
let (r, g, b) = (
r * m2x[0] + g * m2x[1] + b * m2x[2],
r * m2y[0] + g * m2y[1] + b * m2y[2],
r * m2z[0] + g * m2z[1] + b * m2z[2],
);
// This calculation is similar as above that it is a little faster, but less accurate.
// let r = 0.8225 * r + 0.1774 * g + 0.0000 * b;
// let g = 0.0332 * r + 0.9669 * g + 0.0000 * b;
// let b = 0.0171 * r + 0.0724 * g + 0.9108 * b;
// Display-P3 (Linear) -> Display-P3
let (r, g, b) = (
linear_to_display_p3(r),
linear_to_display_p3(g),
linear_to_display_p3(b),
);
// unnormalize the value from 0.0 - 1.0
(
unnormalize_value_from_0_1(r),
unnormalize_value_from_0_1(g),
unnormalize_value_from_0_1(b),
)
}
pub(crate) trait ColorSpaceConversion {
/// Display P3 Color Encoding (v 1.0)
/// https://www.color.org/chardata/rgb/DisplayP3.xalter
fn srgb_to_display_p3(&self) -> Self;
}
impl<T: Primitive> ColorSpaceConversion for Rgb<T> {
fn srgb_to_display_p3(&self) -> Self {
let (r, g, b) = (self.0[0], self.0[1], self.0[2]);
let (r, g, b) = apply_conversion_matrix_srgb_to_display_p3(r, g, b);
Rgb::<T>([r, g, b])
}
}
impl<T: Primitive> ColorSpaceConversion for Rgba<T> {
fn srgb_to_display_p3(&self) -> Self {
let (r, g, b, a) = (self.0[0], self.0[1], self.0[2], self.0[3]);
let (r, g, b) = apply_conversion_matrix_srgb_to_display_p3(r, g, b);
Rgba::<T>([r, g, b, a])
}
}
// make public if needed
fn process_srgb_to_display_p3<I, P, S>(image: &I) -> ImageBuffer<P, Vec<S>>
where
I: GenericImageView<Pixel = P>,
P: Pixel<Subpixel = S> + ColorSpaceConversion + 'static,
S: Primitive + 'static,
{
let (width, height) = image.dimensions();
let mut out = ImageBuffer::new(width, height);
for (x, y, pixel) in image.pixels() {
let pixel = pixel.srgb_to_display_p3();
out.put_pixel(x, y, pixel);
}
out
}
/// Convert the color space of the image from sRGB to Display-P3.
pub(crate) fn srgb_to_display_p3(
image: DynamicImage,
unmatch: Option<fn(ColorType) -> Result<DynamicImage, AnyError>>,
) -> Result<DynamicImage, AnyError> {
match image.color() {
// The conversion of the lumincance color types to the display-p3 color space is meaningless.
ColorType::L8 => Ok(DynamicImage::ImageLuma8(image.to_luma8())),
ColorType::L16 => Ok(DynamicImage::ImageLuma16(image.to_luma16())),
ColorType::La8 => Ok(DynamicImage::ImageLumaA8(image.to_luma_alpha8())),
ColorType::La16 => Ok(DynamicImage::ImageLumaA16(image.to_luma_alpha16())),
ColorType::Rgb8 => Ok(DynamicImage::ImageRgb8(process_srgb_to_display_p3(
&image.to_rgb8(),
))),
ColorType::Rgb16 => Ok(DynamicImage::ImageRgb16(
process_srgb_to_display_p3(&image.to_rgb16()),
)),
ColorType::Rgba8 => Ok(DynamicImage::ImageRgba8(
process_srgb_to_display_p3(&image.to_rgba8()),
)),
ColorType::Rgba16 => Ok(DynamicImage::ImageRgba16(
process_srgb_to_display_p3(&image.to_rgba16()),
)),
x => match unmatch {
Some(unmatch) => unmatch(x),
None => Ok(image),
},
}
}
pub(crate) trait SliceToPixel {
fn slice_to_pixel(pixel: &[u8]) -> Self;
}
impl<T: Primitive + Pod> SliceToPixel for Luma<T> {
fn slice_to_pixel(pixel: &[u8]) -> Self {
let pixel: &[T] = cast_slice(pixel);
let pixel = [pixel[0]];
Luma::<T>(pixel)
}
}
impl<T: Primitive + Pod> SliceToPixel for LumaA<T> {
fn slice_to_pixel(pixel: &[u8]) -> Self {
let pixel: &[T] = cast_slice(pixel);
let pixel = [pixel[0], pixel[1]];
LumaA::<T>(pixel)
}
}
impl<T: Primitive + Pod> SliceToPixel for Rgb<T> {
fn slice_to_pixel(pixel: &[u8]) -> Self {
let pixel: &[T] = cast_slice(pixel);
let pixel = [pixel[0], pixel[1], pixel[2]];
Rgb::<T>(pixel)
}
}
impl<T: Primitive + Pod> SliceToPixel for Rgba<T> {
fn slice_to_pixel(pixel: &[u8]) -> Self {
let pixel: &[T] = cast_slice(pixel);
let pixel = [pixel[0], pixel[1], pixel[2], pixel[3]];
Rgba::<T>(pixel)
}
}
/// Convert the pixel slice to an array to avoid the copy to Vec.
/// I implemented this trait because of I couldn't find a way to effectively combine
/// the `Transform` struct of `lcms2` and `Pixel` trait of `image`.
/// If there is an implementation that is safer and can withstand changes, I would like to adopt it.
pub(crate) trait SliceToArray<const N: usize> {
fn slice_to_array(pixel: &[u8]) -> [u8; N];
}
macro_rules! impl_slice_to_array {
($type:ty, $n:expr) => {
impl<T: Primitive + Pod> SliceToArray<$n> for $type {
fn slice_to_array(pixel: &[u8]) -> [u8; $n] {
let mut dst = [0_u8; $n];
dst.copy_from_slice(&pixel[..$n]);
dst
}
}
};
}
impl_slice_to_array!(Luma<T>, 1);
impl_slice_to_array!(Luma<T>, 2);
impl_slice_to_array!(LumaA<T>, 2);
impl_slice_to_array!(LumaA<T>, 4);
impl_slice_to_array!(Rgb<T>, 3);
impl_slice_to_array!(Rgb<T>, 6);
impl_slice_to_array!(Rgba<T>, 4);
impl_slice_to_array!(Rgba<T>, 8);
// make public if needed
fn process_icc_profile_conversion<P, S, const N: usize>(
image: &DynamicImage,
input_icc_profile: Profile,
output_icc_profile: Profile,
) -> ImageBuffer<P, Vec<S>>
where
P: Pixel<Subpixel = S> + SliceToPixel + SliceToArray<N> + 'static,
S: Primitive + 'static,
{
let (width, height) = image.dimensions();
let mut out = ImageBuffer::new(width, height);
let chunk_size = image.color().bytes_per_pixel() as usize;
let pixel_iter = image
.as_bytes()
.chunks_exact(chunk_size)
.zip(image.pixels());
let pixel_format = match image.color() {
ColorType::L8 => PixelFormat::GRAY_8,
ColorType::L16 => PixelFormat::GRAY_16,
ColorType::La8 => PixelFormat::GRAYA_8,
ColorType::La16 => PixelFormat::GRAYA_16,
ColorType::Rgb8 => PixelFormat::RGB_8,
ColorType::Rgb16 => PixelFormat::RGB_16,
ColorType::Rgba8 => PixelFormat::RGBA_8,
ColorType::Rgba16 => PixelFormat::RGBA_16,
// This arm usually doesn't reach, but it should be handled with returning the original image.
_ => {
return {
for (pixel, (x, y, _)) in pixel_iter {
out.put_pixel(x, y, P::slice_to_pixel(pixel));
}
out
}
}
};
let transformer = Transform::new(
&input_icc_profile,
pixel_format,
&output_icc_profile,
pixel_format,
output_icc_profile.header_rendering_intent(),
);
for (pixel, (x, y, _)) in pixel_iter {
let pixel = match transformer {
Ok(ref transformer) => {
let mut dst = P::slice_to_array(pixel);
transformer.transform_in_place(&mut dst);
dst
}
// This arm will reach when the ffi call fails.
Err(_) => P::slice_to_array(pixel),
};
out.put_pixel(x, y, P::slice_to_pixel(&pixel));
}
out
}
#[rustfmt::skip]
/// Convert the color space of the image from the ICC profile to sRGB.
pub(crate) fn to_srgb_from_icc_profile(
image: DynamicImage,
icc_profile: Option<Vec<u8>>,
unmatch: Option<fn(ColorType) -> Result<DynamicImage, AnyError>>,
) -> Result<DynamicImage, AnyError> {
match icc_profile {
// If there is no color profile information, return the image as is.
None => Ok(image),
Some(icc_profile) => match Profile::new_icc(&icc_profile) {
// If the color profile information is invalid, return the image as is.
Err(_) => Ok(image),
Ok(icc_profile) => {
let srgb_icc_profile = Profile::new_srgb();
match image.color() {
ColorType::L8 => {
Ok(DynamicImage::ImageLuma8(process_icc_profile_conversion::<_,_,1>(&image,icc_profile,srgb_icc_profile)))
}
ColorType::L16 => {
Ok(DynamicImage::ImageLuma16(process_icc_profile_conversion::<_,_,2>(&image,icc_profile,srgb_icc_profile)))
}
ColorType::La8 => {
Ok(DynamicImage::ImageLumaA8(process_icc_profile_conversion::<_,_,2>(&image,icc_profile,srgb_icc_profile)))
}
ColorType::La16 => {
Ok(DynamicImage::ImageLumaA16(process_icc_profile_conversion::<_, _, 4>(&image,icc_profile,srgb_icc_profile)))
},
ColorType::Rgb8 => {
Ok(DynamicImage::ImageRgb8(process_icc_profile_conversion::<_,_,3>(&image,icc_profile,srgb_icc_profile)))
}
ColorType::Rgb16 => {
Ok(DynamicImage::ImageRgb16(process_icc_profile_conversion::<_,_,6>(&image,icc_profile,srgb_icc_profile)))
}
ColorType::Rgba8 => {
Ok(DynamicImage::ImageRgba8(process_icc_profile_conversion::<_,_,4>(&image,icc_profile,srgb_icc_profile)))
}
ColorType::Rgba16 => {
Ok(DynamicImage::ImageRgba16(process_icc_profile_conversion::<_,_,8>(&image,icc_profile,srgb_icc_profile)))
}
x => match unmatch {
Some(unmatch) => unmatch(x),
None => Ok(image),
},
}
}
},
}
}

1132
ext/canvas/lib.rs
View file

File diff suppressed because it is too large Load diff

453
ext/canvas/op_create_image_bitmap.rs Normal file
View file

@ -0,0 +1,453 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::io::BufReader;
use std::io::Cursor;
use deno_core::error::type_error;
use deno_core::error::AnyError;
use deno_core::op2;
use deno_core::JsBuffer;
use deno_core::ToJsBuffer;
use deno_terminal::colors::cyan;
use image::codecs::bmp::BmpDecoder;
use image::codecs::gif::GifDecoder;
use image::codecs::ico::IcoDecoder;
use image::codecs::jpeg::JpegDecoder;
use image::codecs::png::PngDecoder;
use image::codecs::webp::WebPDecoder;
use image::imageops::overlay;
use image::imageops::FilterType;
use image::ColorType;
use image::DynamicImage;
use image::RgbaImage;
use serde::Deserialize;
use serde::Serialize;
use crate::error::image_error_message;
use crate::error::DOMExceptionInvalidStateError;
use crate::idl::PredefinedColorSpace;
use crate::image_decoder::ImageDecoderFromReader;
use crate::image_decoder::ImageDecoderFromReaderType;
use crate::image_ops::premultiply_alpha as process_premultiply_alpha;
use crate::image_ops::srgb_to_display_p3;
use crate::image_ops::to_srgb_from_icc_profile;
use crate::image_ops::unpremultiply_alpha;
#[derive(Debug, Deserialize, PartialEq)]
// Follow the cases defined in the spec
enum ImageBitmapSource {
Blob,
ImageData,
}
#[derive(Debug, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
enum ImageOrientation {
FlipY,
#[serde(rename = "from-image")]
FromImage,
}
#[derive(Debug, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
enum PremultiplyAlpha {
Default,
Premultiply,
None,
}
#[derive(Debug, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
enum ColorSpaceConversion {
Default,
None,
}
#[derive(Debug, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
enum ResizeQuality {
Pixelated,
Low,
Medium,
High,
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct OpCreateImageBitmapArgs {
width: u32,
height: u32,
sx: Option<i32>,
sy: Option<i32>,
sw: Option<i32>,
sh: Option<i32>,
image_orientation: ImageOrientation,
premultiply_alpha: PremultiplyAlpha,
predefined_color_space: PredefinedColorSpace,
color_space_conversion: ColorSpaceConversion,
resize_width: Option<u32>,
resize_height: Option<u32>,
resize_quality: ResizeQuality,
image_bitmap_source: ImageBitmapSource,
mime_type: String,
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
struct OpCreateImageBitmapReturn {
data: ToJsBuffer,
width: u32,
height: u32,
}
type DecodeBitmapDataReturn = (DynamicImage, u32, u32, Option<Vec<u8>>);
fn decode_bitmap_data(
buf: &[u8],
width: u32,
height: u32,
image_bitmap_source: &ImageBitmapSource,
mime_type: String,
) -> Result<DecodeBitmapDataReturn, AnyError> {
let (image, width, height, icc_profile) = match image_bitmap_source {
ImageBitmapSource::Blob => {
let (image, icc_profile) = match &*mime_type {
// Should we support the "image/apng" MIME type here?
"image/png" => {
let mut decoder: PngDecoder<ImageDecoderFromReaderType> =
ImageDecoderFromReader::to_decoder(BufReader::new(Cursor::new(
buf,
)))?;
let icc_profile = decoder.get_icc_profile();
(decoder.to_intermediate_image()?, icc_profile)
}
"image/jpeg" => {
let mut decoder: JpegDecoder<ImageDecoderFromReaderType> =
ImageDecoderFromReader::to_decoder(BufReader::new(Cursor::new(
buf,
)))?;
let icc_profile = decoder.get_icc_profile();
(decoder.to_intermediate_image()?, icc_profile)
}
"image/gif" => {
let mut decoder: GifDecoder<ImageDecoderFromReaderType> =
ImageDecoderFromReader::to_decoder(BufReader::new(Cursor::new(
buf,
)))?;
let icc_profile = decoder.get_icc_profile();
(decoder.to_intermediate_image()?, icc_profile)
}
"image/bmp" => {
let mut decoder: BmpDecoder<ImageDecoderFromReaderType> =
ImageDecoderFromReader::to_decoder(BufReader::new(Cursor::new(
buf,
)))?;
let icc_profile = decoder.get_icc_profile();
(decoder.to_intermediate_image()?, icc_profile)
}
"image/x-icon" => {
let mut decoder: IcoDecoder<ImageDecoderFromReaderType> =
ImageDecoderFromReader::to_decoder(BufReader::new(Cursor::new(
buf,
)))?;
let icc_profile = decoder.get_icc_profile();
(decoder.to_intermediate_image()?, icc_profile)
}
"image/webp" => {
let mut decoder: WebPDecoder<ImageDecoderFromReaderType> =
ImageDecoderFromReader::to_decoder(BufReader::new(Cursor::new(
buf,
)))?;
let icc_profile = decoder.get_icc_profile();
(decoder.to_intermediate_image()?, icc_profile)
}
"" => {
return Err(
DOMExceptionInvalidStateError::new(
&format!("The MIME type of source image is not specified.
INFO: The behavior of the Blob constructor in browsers is different from the spec.
It needs to specify the MIME type like {} that works well between Deno and browsers.
See: https://developer.mozilla.org/en-US/docs/Web/API/Blob/type\n",
cyan("new Blob([blobParts], { type: 'image/png' })")
)).into(),
)
}
// return an error if the MIME type is not supported in the variable list of ImageTypePatternTable below
// ext/web/01_mimesniff.js
//
// NOTE: Chromium supports AVIF
// https://source.chromium.org/chromium/chromium/src/+/ef3f4e4ed97079dc57861d1195fb2389483bc195:third_party/blink/renderer/platform/image-decoders/image_decoder.cc;l=311
x => {
return Err(
DOMExceptionInvalidStateError::new(
&format!("The the MIME type {} of source image is not a supported format.
INFO: The following MIME types are supported:
See: https://mimesniff.spec.whatwg.org/#image-type-pattern-matching-algorithm\n",
x
)).into()
)
}
};
let width = image.width();
let height = image.height();
(image, width, height, icc_profile)
}
ImageBitmapSource::ImageData => {
// > 4.12.5.1.15 Pixel manipulation
// > imagedata.data
// > Returns the one-dimensional array containing the data in RGBA order, as integers in the range 0 to 255.
// https://html.spec.whatwg.org/multipage/canvas.html#pixel-manipulation
let image = match RgbaImage::from_raw(width, height, buf.into()) {
Some(image) => image.into(),
None => {
return Err(type_error(image_error_message(
"decoding",
"The Chunk Data is not big enough with the specified width and height.",
)))
}
};
(image, width, height, None)
}
};
Ok((image, width, height, icc_profile))
}
/// According to the spec, it's not clear how to handle the color space conversion.
///
/// Therefore, if you interpret the specification description from the implementation and wpt results, it will be as follows.
///
/// Let val be the value of the colorSpaceConversion member of options, and then run these substeps:
/// 1. If val is "default", to convert to the sRGB color space.
/// 2. If val is "none", to use the decoded image data as is.
///
/// related issue in whatwg
/// https://github.com/whatwg/html/issues/10578
///
/// reference in wpt
/// https://github.com/web-platform-tests/wpt/blob/d575dc75ede770df322fbc5da3112dcf81f192ec/html/canvas/element/manual/imagebitmap/createImageBitmap-colorSpaceConversion.html#L18
/// https://wpt.live/html/canvas/element/manual/imagebitmap/createImageBitmap-colorSpaceConversion.html
fn apply_color_space_conversion(
image: DynamicImage,
icc_profile: Option<Vec<u8>>,
image_bitmap_source: &ImageBitmapSource,
color_space_conversion: &ColorSpaceConversion,
predefined_color_space: &PredefinedColorSpace,
) -> Result<DynamicImage, AnyError> {
match color_space_conversion {
// return the decoded image as is.
ColorSpaceConversion::None => Ok(image),
ColorSpaceConversion::Default => {
match image_bitmap_source {
ImageBitmapSource::Blob => {
fn color_unmatch(x: ColorType) -> Result<DynamicImage, AnyError> {
Err(type_error(image_error_message(
"apply colorspaceConversion: default",
&format!("The color type {:?} is not supported.", x),
)))
}
to_srgb_from_icc_profile(image, icc_profile, Some(color_unmatch))
}
ImageBitmapSource::ImageData => match predefined_color_space {
// If the color space is sRGB, return the image as is.
PredefinedColorSpace::Srgb => Ok(image),
PredefinedColorSpace::DisplayP3 => {
fn unmatch(x: ColorType) -> Result<DynamicImage, AnyError> {
Err(type_error(image_error_message(
"apply colorspace: display-p3",
&format!("The color type {:?} is not supported.", x),
)))
}
srgb_to_display_p3(image, Some(unmatch))
}
},
}
}
}
}
fn apply_premultiply_alpha(
image: DynamicImage,
image_bitmap_source: &ImageBitmapSource,
premultiply_alpha: &PremultiplyAlpha,
) -> Result<DynamicImage, AnyError> {
let color = image.color();
if !color.has_alpha() {
Ok(image)
} else {
match premultiply_alpha {
// 1.
PremultiplyAlpha::Default => Ok(image),
// https://html.spec.whatwg.org/multipage/canvas.html#convert-from-premultiplied
// 2.
PremultiplyAlpha::Premultiply => process_premultiply_alpha(image, None),
// 3.
PremultiplyAlpha::None => {
// NOTE: It's not clear how to handle the case of ImageData.
// https://issues.chromium.org/issues/339759426
// https://github.com/whatwg/html/issues/5365
if *image_bitmap_source == ImageBitmapSource::ImageData {
return Ok(image);
}
unpremultiply_alpha(image, None)
}
}
}
}
#[op2]
#[serde]
pub(super) fn op_create_image_bitmap(
#[buffer] zero_copy: JsBuffer,
#[serde] args: OpCreateImageBitmapArgs,
) -> Result<OpCreateImageBitmapReturn, AnyError> {
let buf = &*zero_copy;
let OpCreateImageBitmapArgs {
width,
height,
sh,
sw,
sx,
sy,
image_orientation,
premultiply_alpha,
predefined_color_space,
color_space_conversion,
resize_width,
resize_height,
resize_quality,
image_bitmap_source,
mime_type,
} = OpCreateImageBitmapArgs {
width: args.width,
height: args.height,
sx: args.sx,
sy: args.sy,
sw: args.sw,
sh: args.sh,
image_orientation: args.image_orientation,
premultiply_alpha: args.premultiply_alpha,
predefined_color_space: args.predefined_color_space,
color_space_conversion: args.color_space_conversion,
resize_width: args.resize_width,
resize_height: args.resize_height,
resize_quality: args.resize_quality,
image_bitmap_source: args.image_bitmap_source,
mime_type: args.mime_type,
};
// 6. Switch on image:
let (image, width, height, icc_profile) =
decode_bitmap_data(buf, width, height, &image_bitmap_source, mime_type)?;
// crop bitmap data
// 2.
#[rustfmt::skip]
let source_rectangle: [[i32; 2]; 4] =
if let (Some(sx), Some(sy), Some(sw), Some(sh)) = (sx, sy, sw, sh) {
[
[sx, sy],
[sx + sw, sy],
[sx + sw, sy + sh],
[sx, sy + sh]
]
} else {
[
[0, 0],
[width as i32, 0],
[width as i32, height as i32],
[0, height as i32],
]
};
/*
* The cropping works differently than the spec specifies:
* The spec states to create an infinite surface and place the top-left corner
* of the image a 0,0 and crop based on sourceRectangle.
*
* We instead create a surface the size of sourceRectangle, and position
* the image at the correct location, which is the inverse of the x & y of
* sourceRectangle's top-left corner.
*/
let input_x = -(source_rectangle[0][0] as i64);
let input_y = -(source_rectangle[0][1] as i64);
let surface_width = (source_rectangle[1][0] - source_rectangle[0][0]) as u32;
let surface_height = (source_rectangle[3][1] - source_rectangle[0][1]) as u32;
// 3.
let output_width = if let Some(resize_width) = resize_width {
resize_width
} else if let Some(resize_height) = resize_height {
(surface_width * resize_height).div_ceil(surface_height)
} else {
surface_width
};
// 4.
let output_height = if let Some(resize_height) = resize_height {
resize_height
} else if let Some(resize_width) = resize_width {
(surface_height * resize_width).div_ceil(surface_width)
} else {
surface_height
};
// 5.
let image = if !(width == surface_width
&& height == surface_height
&& input_x == 0
&& input_y == 0)
{
let mut surface =
DynamicImage::new(surface_width, surface_height, image.color());
overlay(&mut surface, &image, input_x, input_y);
surface
} else {
image
};
// 7.
let filter_type = match resize_quality {
ResizeQuality::Pixelated => FilterType::Nearest,
ResizeQuality::Low => FilterType::Triangle,
ResizeQuality::Medium => FilterType::CatmullRom,
ResizeQuality::High => FilterType::Lanczos3,
};
// should use resize_exact
// https://github.com/image-rs/image/issues/1220#issuecomment-632060015
let image = image.resize_exact(output_width, output_height, filter_type);
// 8.
let image = if image_orientation == ImageOrientation::FlipY {
image.flipv()
} else {
image
};
// 9.
let image = apply_color_space_conversion(
image,
icc_profile,
&image_bitmap_source,
&color_space_conversion,
&predefined_color_space,
)?;
// 10.
let image =
apply_premultiply_alpha(image, &image_bitmap_source, &premultiply_alpha)?;
Ok(OpCreateImageBitmapReturn {
data: image.into_bytes().into(),
width: output_width,
height: output_height,
})
}