This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The getPhotoCapabilities()
method of the ImageCapture
interface returns a Promise
that resolves with a PhotoCapabilities
object containing the ranges of available configuration options.
var promise = ImageCapture.getPhotoCapabilities()
None.
A Promise
that resolves with a PhotoCapabilities
object.
The following example, extracted from Chrome's Image Capture / Photo Resolution Sample, uses the results from getPhotoCapabilities()
to modify the size of an input range. This example also shows how the ImageCapture
object is created using a MediaStreamTrack
retrieved from a device's MediaStream
.
const input = document.querySelector('input[type="range"]'); var imageCapture; navigator.mediaDevices.getUserMedia({video: true}) .then(mediaStream => { document.querySelector('video').srcObject = mediaStream; const track = mediaStream.getVideoTracks()[0]; imageCapture = new ImageCapture(track); return imageCapture.getPhotoCapabilities(); }) .then(photoCapabilities => { const settings = imageCapture.track.getSettings(); input.min = photoCapabilities.imageWidth.min; input.max = photoCapabilities.imageWidth.max; input.step = photoCapabilities.imageWidth.step; return imageCapture.getPhotoSettings(); }) .then(photoSettings => { input.value = photoSettings.imageWidth; }) .catch(error => console.log('Argh!', error.name || error));
Specification | Status | Comment |
---|---|---|
MediaStream Image Capture The definition of 'getPhotoCapabilities()' in that specification. | Working Draft | Initial definition. |
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 59 | ? | ? | 46 | ? |
Feature | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support | 59 | 59 | ? | ? | ? | 46 | ? |
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ImageCapture/getPhotoCapabilities