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fix(ext/web): properly handle Blob case for createImageBitmap (#23518)

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fixes https://github.com/denoland/deno/issues/22649
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Hajime-san 2024-05-07 20:47:42 +09:00 committed by GitHub
parent cbb78e138f
commit e7a2317f5a
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4 changed files with 16 additions and 2 deletions
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4
ext/canvas/01_image.js
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@ -238,7 +238,9 @@ function createImageBitmap(
"InvalidStateError",
);
}
const { data: imageData, width, height } = op_image_decode_png(data);
const { data: imageData, width, height } = op_image_decode_png(
new Uint8Array(data),
);
const processedImage = processImage(
imageData,
width,

3
ext/canvas/lib.rs
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@ -130,7 +130,8 @@ fn op_image_decode_png(#[buffer] buf: &[u8]) -> Result<DecodedPng, AnyError> {
)));
}
let mut png_data = Vec::with_capacity(png.total_bytes() as usize);
// read_image will assert that the buffer is the correct size, so we need to fill it with zeros
let mut png_data = vec![0_u8; png.total_bytes() as usize];
png.read_image(&mut png_data)?;

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tests/testdata/image/1x1-white.png vendored Normal file
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Width:  |  Height:  |  Size: 109 B

11
tests/unit/image_bitmap_test.ts
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@ -90,3 +90,14 @@ Deno.test(async function imageBitmapFlipY() {
1, 0, 0, 1, 2, 0, 0, 1, 3, 0, 0, 1,
]));
});
Deno.test(async function imageBitmapFromBlob() {
const path = "tests/testdata/image/1x1-white.png";
const imageData = new Blob([await Deno.readFile(path)], {
type: "image/png",
});
const imageBitmap = await createImageBitmap(imageData);
// @ts-ignore: Deno[Deno.internal].core allowed
// deno-fmt-ignore
assertEquals(Deno[Deno.internal].getBitmapData(imageBitmap), new Uint8Array([255,255,255,255]));
});