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109 lines
3.7 KiB
JavaScript
109 lines
3.7 KiB
JavaScript
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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var Guacamole = Guacamole || {};
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/**
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* Abstract video player which accepts, queues and plays back arbitrary video
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* data. It is up to implementations of this class to provide some means of
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* handling a provided Guacamole.InputStream and rendering the received data to
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* the provided Guacamole.Display.VisibleLayer. Data received along the
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* provided stream is to be played back immediately.
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*
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* @constructor
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*/
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Guacamole.VideoPlayer = function VideoPlayer() {
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/**
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* Notifies this Guacamole.VideoPlayer that all video up to the current
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* point in time has been given via the underlying stream, and that any
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* difference in time between queued video data and the current time can be
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* considered latency.
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*/
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this.sync = function sync() {
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// Default implementation - do nothing
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};
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};
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/**
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* Determines whether the given mimetype is supported by any built-in
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* implementation of Guacamole.VideoPlayer, and thus will be properly handled
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* by Guacamole.VideoPlayer.getInstance().
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*
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* @param {String} mimetype
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* The mimetype to check.
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*
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* @returns {Boolean}
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* true if the given mimetype is supported by any built-in
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* Guacamole.VideoPlayer, false otherwise.
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*/
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Guacamole.VideoPlayer.isSupportedType = function isSupportedType(mimetype) {
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// There are currently no built-in video players (and therefore no
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// supported types)
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return false;
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};
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/**
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* Returns a list of all mimetypes supported by any built-in
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* Guacamole.VideoPlayer, in rough order of priority. Beware that only the core
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* mimetypes themselves will be listed. Any mimetype parameters, even required
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* ones, will not be included in the list.
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*
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* @returns {String[]}
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* A list of all mimetypes supported by any built-in Guacamole.VideoPlayer,
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* excluding any parameters.
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*/
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Guacamole.VideoPlayer.getSupportedTypes = function getSupportedTypes() {
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// There are currently no built-in video players (and therefore no
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// supported types)
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return [];
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};
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/**
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* Returns an instance of Guacamole.VideoPlayer providing support for the given
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* video format. If support for the given video format is not available, null
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* is returned.
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*
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* @param {Guacamole.InputStream} stream
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* The Guacamole.InputStream to read video data from.
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*
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* @param {Guacamole.Display.VisibleLayer} layer
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* The destination layer in which this Guacamole.VideoPlayer should play
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* the received video data.
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*
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* @param {String} mimetype
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* The mimetype of the video data in the provided stream.
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*
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* @return {Guacamole.VideoPlayer}
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* A Guacamole.VideoPlayer instance supporting the given mimetype and
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* reading from the given stream, or null if support for the given mimetype
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* is absent.
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*/
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Guacamole.VideoPlayer.getInstance = function getInstance(stream, layer, mimetype) {
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// There are currently no built-in video players
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return null;
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};
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