mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-17 16:26:39 +03:00
Joey Parrish
64896d70b0
This reflects changes in Google's policy on JavaScript license headers, which should be smaller to avoid increasing the size of the binary unnecessarily. This also updates the company name from "Google, Inc" to "Google LLC". Change-Id: I3f8b9ed3700b6351f43173d50c94d35c333e82b4
111 lines
3.3 KiB
JavaScript
111 lines
3.3 KiB
JavaScript
/** @license
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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.DataUriPlugin');
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goog.require('shaka.log');
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goog.require('shaka.net.NetworkingEngine');
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goog.require('shaka.util.AbortableOperation');
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goog.require('shaka.util.Error');
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goog.require('shaka.util.StringUtils');
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goog.require('shaka.util.Uint8ArrayUtils');
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/**
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* @summary A networking plugin to handle data URIs.
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* @see https://developer.mozilla.org/en-US/docs/Web/HTTP/data_URIs
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* @export
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*/
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shaka.net.DataUriPlugin = class {
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/**
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* @param {string} uri
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* @param {shaka.extern.Request} request
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* @param {shaka.net.NetworkingEngine.RequestType} requestType
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* @param {shaka.extern.ProgressUpdated} progressUpdated Called when a
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* progress event happened.
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* @return {!shaka.extern.IAbortableOperation.<shaka.extern.Response>}
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* @export
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*/
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static parse(uri, request, requestType, progressUpdated) {
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try {
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const parsed = shaka.net.DataUriPlugin.parseRaw(uri);
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/** @type {shaka.extern.Response} */
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const response = {
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uri: uri,
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originalUri: uri,
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data: parsed.data,
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headers: {
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'content-type': parsed.contentType,
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},
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};
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return shaka.util.AbortableOperation.completed(response);
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} catch (error) {
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return shaka.util.AbortableOperation.failed(error);
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}
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}
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/**
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* @param {string} uri
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* @return {{data: BufferSource, contentType: string}}
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*/
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static parseRaw(uri) {
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// Extract the scheme.
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const parts = uri.split(':');
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if (parts.length < 2 || parts[0] != 'data') {
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shaka.log.error('Bad data URI, failed to parse scheme');
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throw new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.NETWORK,
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shaka.util.Error.Code.MALFORMED_DATA_URI,
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uri);
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}
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const path = parts.slice(1).join(':');
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// Extract the encoding and MIME type (required but can be empty).
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const infoAndData = path.split(',');
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if (infoAndData.length < 2) {
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shaka.log.error('Bad data URI, failed to extract encoding and MIME type');
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throw new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.NETWORK,
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shaka.util.Error.Code.MALFORMED_DATA_URI,
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uri);
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}
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const info = infoAndData[0];
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const dataStr = window.decodeURIComponent(infoAndData.slice(1).join(','));
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// Extract the encoding (optional).
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const typeAndEncoding = info.split(';');
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let encoding = null;
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if (typeAndEncoding.length > 1) {
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encoding = typeAndEncoding[1];
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}
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// Convert the data.
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/** @type {BufferSource} */
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let data;
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if (encoding == 'base64') {
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data = shaka.util.Uint8ArrayUtils.fromBase64(dataStr);
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} else if (encoding) {
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shaka.log.error('Bad data URI, unknown encoding');
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throw new shaka.util.Error(
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shaka.util.Error.Severity.CRITICAL,
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shaka.util.Error.Category.NETWORK,
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shaka.util.Error.Code.UNKNOWN_DATA_URI_ENCODING,
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uri);
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} else {
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data = shaka.util.StringUtils.toUTF8(dataStr);
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}
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return {data: data, contentType: typeAndEncoding[0]};
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}
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};
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shaka.net.NetworkingEngine.registerScheme(
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'data', shaka.net.DataUriPlugin.parse);
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