mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Álvaro Velad Galván
112 lines
2.9 KiB
JavaScript
112 lines
2.9 KiB
JavaScript
/*! @license
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* Shaka Player
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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goog.provide('shaka.net.NetworkingUtils');
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goog.require('goog.Uri');
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goog.require('shaka.net.NetworkingEngine');
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goog.require('shaka.util.Error');
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/**
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* @summary Networking utility functions.
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*/
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shaka.net.NetworkingUtils = class {
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/**
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* @param {string} uri
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* @param {!shaka.net.NetworkingEngine} netEngine
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* @param {shaka.extern.RetryParameters} retryParams
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* @return {!Promise.<string>}
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*/
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static async getMimeType(uri, netEngine, retryParams) {
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const extension = shaka.net.NetworkingUtils.getExtension_(uri);
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let mimeType =
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shaka.net.NetworkingUtils.EXTENSIONS_TO_MIME_TYPES_[extension];
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if (mimeType) {
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return mimeType;
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}
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const type = shaka.net.NetworkingEngine.RequestType.MANIFEST;
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const request = shaka.net.NetworkingEngine.makeRequest([uri], retryParams);
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try {
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request.method = 'HEAD';
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const response = await netEngine.request(type, request).promise;
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mimeType = response.headers['content-type'];
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} catch (error) {
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if (error &&
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(error.code == shaka.util.Error.Code.HTTP_ERROR ||
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error.code == shaka.util.Error.Code.BAD_HTTP_STATUS)) {
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request.method = 'GET';
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const response = await netEngine.request(type, request).promise;
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mimeType = response.headers['content-type'];
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}
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}
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// https://bit.ly/2K9s9kf says this header should always be available,
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// but just to be safe:
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return mimeType ? mimeType.toLowerCase().split(';').shift() : '';
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}
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/**
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* @param {string} uri
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* @return {string}
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* @private
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*/
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static getExtension_(uri) {
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const uriObj = new goog.Uri(uri);
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const uriPieces = uriObj.getPath().split('/');
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const uriFilename = uriPieces.pop();
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const filenamePieces = uriFilename.split('.');
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// Only one piece means there is no extension.
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if (filenamePieces.length == 1) {
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return '';
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}
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return filenamePieces.pop().toLowerCase();
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}
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};
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/**
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* @const {!Object.<string, string>}
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* @private
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*/
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shaka.net.NetworkingUtils.EXTENSIONS_TO_MIME_TYPES_ = {
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'mp4': 'video/mp4',
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'm4v': 'video/mp4',
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'm4a': 'audio/mp4',
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'webm': 'video/webm',
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'weba': 'audio/webm',
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'mkv': 'video/webm', // Chromium browsers supports it.
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'ts': 'video/mp2t',
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'ogv': 'video/ogg',
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'ogg': 'audio/ogg',
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'mpg': 'video/mpeg',
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'mpeg': 'video/mpeg',
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'm3u8': 'application/x-mpegurl',
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'mpd': 'application/dash+xml',
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'ism': 'application/vnd.ms-sstr+xml',
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'mp3': 'audio/mpeg',
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'aac': 'audio/aac',
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'flac': 'audio/flac',
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'wav': 'audio/wav',
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'sbv': 'text/x-subviewer',
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'srt': 'text/srt',
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'vtt': 'text/vtt',
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'webvtt': 'text/vtt',
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'ttml': 'application/ttml+xml',
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'lrc': 'application/x-subtitle-lrc',
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'ssa': 'text/x-ssa',
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'ass': 'text/x-ssa',
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'jpg': 'image/jpeg',
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'png': 'image/png',
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'svg': 'image/svg+xml',
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'webp': 'image/webp',
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'avif': 'image/avif',
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};
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