40 lines
1.1 KiB
TypeScript
40 lines
1.1 KiB
TypeScript
// Copyright 2018-2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import * as MIME from '../types/MIME';
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interface MIMETypeSupportMap {
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[key: string]: boolean;
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}
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// See: https://en.wikipedia.org/wiki/Comparison_of_web_browsers#Image_format_support
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const SUPPORTED_IMAGE_MIME_TYPES: MIMETypeSupportMap = {
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'image/bmp': true,
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'image/gif': true,
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'image/jpeg': true,
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// No need to support SVG
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'image/svg+xml': false,
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'image/webp': true,
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'image/x-xbitmap': true,
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// ICO
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'image/vnd.microsoft.icon': true,
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'image/ico': true,
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'image/icon': true,
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'image/x-icon': true,
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// PNG
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'image/apng': true,
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'image/png': true,
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};
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export const isImageTypeSupported = (mimeType: MIME.MIMEType): boolean =>
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SUPPORTED_IMAGE_MIME_TYPES[mimeType] === true;
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const SUPPORTED_VIDEO_MIME_TYPES: MIMETypeSupportMap = {
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'video/mp4': true,
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'video/ogg': true,
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'video/webm': true,
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};
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// See: https://www.chromium.org/audio-video
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export const isVideoTypeSupported = (mimeType: MIME.MIMEType): boolean =>
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SUPPORTED_VIDEO_MIME_TYPES[mimeType] === true;
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