gecko/netwerk/dash/mpd/MPD.cpp

92 lines
2.6 KiB
C++

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