gecko/content/media/video/public/nsChannelReader.h
2009-02-20 16:01:58 +13:00

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3.0 KiB
C++

/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla code.
*
* The Initial Developer of the Original Code is the Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Double <chris.double@double.co.nz>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#if !defined(nsChannelReader_h_)
#define nsChannelReader_h_
#include "nsAutoPtr.h"
#include "nsMediaStream.h"
#include "nsMediaDecoder.h"
#include "nsIPrincipal.h"
#include "oggplay/oggplay.h"
class nsIChannel;
class nsIStreamListener;
class nsChannelReader : public OggPlayReader
{
public:
nsChannelReader();
~nsChannelReader();
/**
* Initialize the reader with the given decoder, URI, and
* optional channel.
* @param aChannel may be null
* @param aStreamListener if aChannel is non-null, this will return
* a stream listener which should be attached to the channel.
*/
nsresult Init(nsMediaDecoder* aDecoder, nsIURI* aURI, nsIChannel* aChannel,
nsIStreamListener** aStreamListener);
// Cancel any blocking request currently in progress and cause that
// request to return an error. Call on main thread only.
void Cancel();
// Suspend any downloads that are in progress.
void Suspend();
// Resume any downloads that have been suspended.
void Resume();
nsIPrincipal* GetCurrentPrincipal();
// Implementation of OggPlay Reader API.
OggPlayErrorCode initialise(int aBlock);
OggPlayErrorCode destroy();
size_t io_read(char* aBuffer, size_t aCount);
int io_seek(long aOffset, int aWhence);
long io_tell();
public:
nsMediaStream mStream;
};
#endif