mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-16 16:16:40 +03:00
Timothy Drews
b8b3ad862b
* Rename SegmentIndex functions to shorter names. * Add first() and last() functions for convenience. * Throw exceptions for out of range errors. * Handle more corner-cases in merge(). * Add more unit tests. Change-Id: If875cd766e7091504c028413694326fcdf2aae5b
105 lines
2.9 KiB
JavaScript
105 lines
2.9 KiB
JavaScript
/**
|
|
* Copyright 2014 Google Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* @fileoverview Implements a segment reference structure.
|
|
*/
|
|
|
|
goog.provide('shaka.media.SegmentReference');
|
|
|
|
goog.require('goog.Uri');
|
|
|
|
|
|
|
|
/**
|
|
* Creates a SegmentReference, which is a reference to some media segment.
|
|
*
|
|
* @param {number} id The segment's ID.
|
|
* @param {number} startTime The time, in seconds, that the segment begins.
|
|
* @param {?number} endTime The time, in seconds, that the segment ends. The
|
|
* segment ends immediately before this time. A null value indicates that
|
|
* the segment continues to the end of the stream.
|
|
* @param {number} startByte The position of the segment's first byte.
|
|
* @param {?number} endByte The position of the segment's last byte, inclusive.
|
|
* A null value indicates that the segment continues to the end of the
|
|
* file located at |url|.
|
|
* @param {!goog.Uri} url The segment's location.
|
|
* @constructor
|
|
* @struct
|
|
*/
|
|
shaka.media.SegmentReference = function(
|
|
id, startTime, endTime, startByte, endByte, url) {
|
|
shaka.asserts.assert((endTime == null) || (startTime <= endTime),
|
|
'startTime should be <= endTime');
|
|
|
|
/**
|
|
* The segment's ID.
|
|
* @const {number}
|
|
*/
|
|
this.id = id;
|
|
|
|
/**
|
|
* The time, in seconds, that the segment begins.
|
|
* @const {number}
|
|
*/
|
|
this.startTime = startTime;
|
|
|
|
/**
|
|
* The time, in seconds, that the segment ends. The segment ends immediately
|
|
* before this time. A null value indicates that the segment continues to the
|
|
* end of the stream.
|
|
* @const {?number}
|
|
*/
|
|
this.endTime = endTime;
|
|
|
|
/**
|
|
* The position of the segment's first byte.
|
|
* @const {number}
|
|
*/
|
|
this.startByte = startByte;
|
|
|
|
/**
|
|
* The position of the segment's last byte, inclusive. A null value indicates
|
|
* that the segment continues to the end of the file located at |url|.
|
|
* @const {?number}
|
|
*/
|
|
this.endByte = endByte;
|
|
|
|
/**
|
|
* The segment's location.
|
|
* @const {!goog.Uri}
|
|
*/
|
|
this.url = url;
|
|
};
|
|
|
|
|
|
/**
|
|
* Creates a new SegmentReference with an adjusted start time and an adjusted
|
|
* end time.
|
|
*
|
|
* @param {number} startTime
|
|
* @param {?number} endTime
|
|
* @return {!shaka.media.SegmentReference}
|
|
*/
|
|
shaka.media.SegmentReference.prototype.adjust = function(startTime, endTime) {
|
|
return new shaka.media.SegmentReference(
|
|
this.id,
|
|
startTime,
|
|
endTime,
|
|
this.startByte,
|
|
this.endByte,
|
|
this.url);
|
|
};
|
|
|