gecko-dev/netwerk/dash/mpd/nsDASHMPDParser.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*
* nsDASHMPDParser.h
*****************************************************************************
* 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.
*
* see nsDASHDecoder.cpp for info on DASH interaction with the media engine.
*/
#ifndef __DASHMPDPARSER_H__
#define __DASHMPDPARSER_H__
#include "nsAutoPtr.h"
#include "nsNetUtil.h"
#include "nsIPrincipal.h"
#include "nsIDOMElement.h"
#include "IMPDManager.h"
namespace mozilla {
namespace net {
class nsDASHMPDParser
{
public:
// Constructor takes pointer to MPD byte stream and length, as well as the
// current principal and URI from which the MPD download took place.
// Ownership of |aMPDData| should be transferred to this object.
nsDASHMPDParser(char* aMPDData,
uint32_t aDataLength,
nsIPrincipal* aPrincipal,
nsIURI* aURI);
~nsDASHMPDParser();
// Parses the MPD byte stream passed in the constructor.
// Returns a pointer to the MPDManager and the MPD profile type.
nsresult Parse(IMPDManager** aMPDManager,
DASHMPDProfile* aProfile);
private:
// Returns the MPD profile type given the DOM node for the root.
nsresult GetProfile(nsIDOMElement* aRoot,
DASHMPDProfile &profile);
// Debug: Prints the DOM elements.
void PrintDOMElements(nsIDOMElement* aRoot);
// Debug: Prints a single DOM element.
void PrintDOMElement(nsIDOMElement* aElem, int32_t aOffset);
// Pointer to the MPD byte stream.
nsAutoPtr<char const> mData;
// Length in bytes of the MPD stream.
uint32_t mDataLength;
// Principal of the document.
nsCOMPtr<nsIPrincipal> mPrincipal;
// URI of the MPD Document downloaded.
nsCOMPtr<nsIURI> mURI;
};
}//namespace net
}//namespace mozilla
#endif /* __DASHMPDPARSER_H__ */