mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-25 17:45:03 +03:00
Joey Parrish
2f55d2a3bd
This uses AbortableOperation in all networking, from the scheme plugins all the way to the request interface. This also updates all default scheme plugins, docs, and sample code. Backward compatibility is provided for scheme plugins and the request API in NetworkingEngine. This compatibility will be removed in v2.5. Two cancelation-related tests have been disabled in player_integration until the new abort interface has been adopted in the manifest parsers. Issue #829 Change-Id: I91c8e6efe97798d111e8ddca5655cddc1f6bcbf3
114 lines
3.4 KiB
JavaScript
114 lines
3.4 KiB
JavaScript
/**
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* @license
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* Copyright 2016 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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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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* @namespace
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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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* @param {string} uri
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* @param {shakaExtern.Request} request
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* @return {!shakaExtern.IAbortableOperation.<shakaExtern.Response>}
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* @export
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*/
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shaka.net.DataUriPlugin = function(uri, request) {
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try {
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var parsed = shaka.net.DataUriPlugin.parse(uri);
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/** @type {shakaExtern.Response} */
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var response = {
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uri: 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: ArrayBuffer, contentType: string}}
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*/
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shaka.net.DataUriPlugin.parse = function(uri) {
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// Extract the scheme.
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var 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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var path = parts.slice(1).join(':');
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// Extract the encoding and MIME type (required but can be empty).
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var 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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var info = infoAndData[0];
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var dataStr = window.decodeURIComponent(infoAndData.slice(1).join(','));
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// Extract the encoding (optional).
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var typeAndEncoding = info.split(';');
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var encoding = null;
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if (typeAndEncoding.length > 1)
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encoding = typeAndEncoding[1];
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// Convert the data.
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/** @type {ArrayBuffer} */
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var data;
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if (encoding == 'base64') {
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data = shaka.util.Uint8ArrayUtils.fromBase64(dataStr).buffer;
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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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shaka.net.NetworkingEngine.registerScheme('data', shaka.net.DataUriPlugin);
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