зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
2.6 KiB
C++
92 строки
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
|