49 lines
1.5 KiB
TypeScript
49 lines
1.5 KiB
TypeScript
// Copyright 2018-2021 Signal Messenger, LLC
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
import type * as MIME from '../types/MIME';
|
|
|
|
type MIMETypeSupportMap = Record<string, boolean>;
|
|
|
|
// See: https://en.wikipedia.org/wiki/Comparison_of_web_browsers#Image_format_support
|
|
const SUPPORTED_IMAGE_MIME_TYPES: MIMETypeSupportMap = {
|
|
'image/bmp': true,
|
|
'image/gif': true,
|
|
'image/jpeg': true,
|
|
// No need to support SVG
|
|
'image/svg+xml': false,
|
|
'image/webp': true,
|
|
'image/x-xbitmap': true,
|
|
// ICO
|
|
'image/vnd.microsoft.icon': true,
|
|
'image/ico': true,
|
|
'image/icon': true,
|
|
'image/x-icon': true,
|
|
// PNG
|
|
'image/apng': true,
|
|
'image/png': true,
|
|
};
|
|
|
|
export const isImageTypeSupported = (mimeType: MIME.MIMEType): boolean =>
|
|
SUPPORTED_IMAGE_MIME_TYPES[mimeType] === true;
|
|
|
|
const SUPPORTED_VIDEO_MIME_TYPES: MIMETypeSupportMap = {
|
|
'video/mp4': true,
|
|
'video/ogg': true,
|
|
'video/webm': true,
|
|
};
|
|
|
|
// See: https://www.chromium.org/audio-video
|
|
export const isVideoTypeSupported = (mimeType: MIME.MIMEType): boolean =>
|
|
SUPPORTED_VIDEO_MIME_TYPES[mimeType] === true;
|
|
|
|
export const getSupportedImageTypes = (): Array<MIME.MIMEType> => {
|
|
const keys = Object.keys(SUPPORTED_IMAGE_MIME_TYPES) as Array<MIME.MIMEType>;
|
|
return keys.filter(contentType => SUPPORTED_IMAGE_MIME_TYPES[contentType]);
|
|
};
|
|
|
|
export const getSupportedVideoTypes = (): Array<MIME.MIMEType> => {
|
|
const keys = Object.keys(SUPPORTED_VIDEO_MIME_TYPES) as Array<MIME.MIMEType>;
|
|
return keys.filter(contentType => SUPPORTED_VIDEO_MIME_TYPES[contentType]);
|
|
};
|