ImageDecoder.ImageDecoder()
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The ImageDecoder()
constructor creates a new ImageDecoder
object which unpacks and decodes image data.
Syntax
new ImageDecoder(init);
Parameters
init
-
An object containing the following members:
type
-
A
string
containing the MIME type of the image file to be decoded. data
-
A
BufferSource
orReadableStream
of bytes representing an encoded image type as described bytype
. -
premultiplyAlpha
Optional -
One of the following, if not provided set as
"default"
:"none"
"premultiply"
"default"
-
colorSpaceConversion
Optional -
One of the following, if not provided set as
"default"
:"none"
"default"
-
desiredWidth
Optional -
An integer indicating the desired width for the decoded output.
-
desiredHeight
Optional -
An integer indicating the desired height for the decoded output.
-
preferAnimation
Optional -
A
Boolean
indicating whether the the initial track selection should prefer an animated track.
Examples
The following example creates a new ImageDecoder
with the required options.
let init = { type: "image/png", data: imageByteStream }; let imageDecoder = new ImageDecoder(init);
Specifications
Specification |
---|
WebCodecs # dom-imagedecoder-imagedecoder |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
ImageDecoder |
94 |
94 |
No |
No |
80 |
No |
94 |
94 |
No |
No |
No |
No |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ImageDecoder/ImageDecoder