зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
2.6 KiB
C++
92 строки
2.6 KiB
C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/*
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* MPD.cpp
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*****************************************************************************
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* Copyright(C) 2010 - 2011 Klagenfurt University
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*
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* Created on: Aug 10, 2010
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* Authors: Christopher Mueller <christopher.mueller@itec.uni-klu.ac.at>
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* Christian Timmerer <christian.timmerer@itec.uni-klu.ac.at>
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* Contributors:
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* Steve Workman <sworkman@mozilla.com>
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*
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* This Source Code Form Is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*****************************************************************************/
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/* DASH - Dynamic Adaptive Streaming over HTTP
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*
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* DASH is an adaptive bitrate streaming technology where a multimedia file is
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* partitioned into one or more segments and delivered to a client using HTTP.
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*
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* |MPD| - Media Presentation Description
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*
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* Describes the media presentation. Top of the hierarchy in an MPD file.
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* Contains one or a series of contiguous |Period|s, which contain 1+ available
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* pieces of media, available during that time period, e.g. audio in various
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* languages, a video component.
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*
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* Common class used by all DASH Profiles.
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* Populated by implementation of MPD Parser.
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* Used as data source by implementation of MPD Manager.
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*
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* |MPD|
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* --> |Period|s of time.
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* --> |AdaptationSet|s for each type or group of media content.
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* --> |Representation|s of media, encoded with different bitrates.
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* --> |Segment|s of media, identified by URL (+optional byte
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* range.
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*/
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#include "nsTArray.h"
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#include "MPD.h"
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namespace mozilla {
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namespace net {
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void
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MPD::AddPeriod(Period* aPeriod)
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{
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NS_ENSURE_TRUE(aPeriod,);
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// Only add |Period| if it's not in the array already.
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if (!mPeriods.Contains(aPeriod)) {
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mPeriods.AppendElement(aPeriod);
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}
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}
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Period const *
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MPD::GetPeriod(uint32_t aIndex) const
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{
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NS_ENSURE_TRUE(aIndex < mPeriods.Length(), nullptr);
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return mPeriods[aIndex];
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}
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uint32_t const
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MPD::GetNumPeriods() const
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{
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return mPeriods.Length();
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}
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void
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MPD::AddBaseUrl(nsAString const& aUrl)
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{
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NS_ENSURE_FALSE(aUrl.IsEmpty(),);
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// Only add |BaseUrl| string if it's not in the array already.
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if (!mBaseUrls.Contains(aUrl)) {
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mBaseUrls.AppendElement(aUrl);
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}
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}
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nsAString const&
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MPD::GetBaseUrl(uint32_t aIndex) const
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{
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NS_ENSURE_TRUE(aIndex < mBaseUrls.Length(), NS_LITERAL_STRING(""));
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return mBaseUrls[aIndex];
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}
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}//namespace net
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}//namespace mozilla
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