/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//																			//
//	plAudioFileReader - Microsoft's way of making our lives difficult when	//
//				  reading in .WMA files. Hacking Winamp's plugins is		//
//				  probably easier...										//
//																			//
//////////////////////////////////////////////////////////////////////////////

#ifndef _plAudioFileReader_h
#define _plAudioFileReader_h

#include "plAudioCore.h"
#include "hsTemplates.h"

//// Class Definition ////////////////////////////////////////////////////////

class plUnifiedTime;
class plWAVHeader;
class plAudioFileReader
{
public:
	virtual ~plAudioFileReader() {}
	virtual plWAVHeader	&GetHeader( void ) = 0;

	enum StreamType
	{
		kStreamRAM,		// Stream from a WAV loaded into RAM
		kStreamWAV,		// Stream from a WAV on disk
		kStreamNative,	// Stream from the native type (ie, an Ogg on disk)
	};

	virtual void	Open(){}
	virtual void	Close( void ) = 0;

	virtual UInt32	GetDataSize( void ) = 0;
	virtual float	GetLengthInSecs( void ) = 0;

	virtual hsBool	SetPosition( UInt32 numBytes ) = 0;
	virtual hsBool	Read( UInt32 numBytes, void *buffer ) = 0;
	virtual UInt32	NumBytesLeft( void ) = 0;

	virtual hsBool	OpenForWriting( const char *path, plWAVHeader &header ) { return false; }
	virtual UInt32	Write( UInt32 bytes, void *buffer ) { return 0; }

	virtual hsBool	IsValid( void ) = 0;

	static plAudioFileReader* CreateReader(const char* path, plAudioCore::ChannelSelect whichChan = plAudioCore::kAll, StreamType type = kStreamWAV);
	static plAudioFileReader* CreateWriter(const char* path, plWAVHeader& header);

	// Decompresses a compressed file to the cache directory
	static void	CacheFile(const char* path, bool splitChannels=false, bool noOverwrite=false);

protected:
	static void IGetCachedPath(const char* path, char* cachedPath, plAudioCore::ChannelSelect whichChan);
	static void ICacheFile(const char* path, bool noOverwrite, plAudioCore::ChannelSelect whichChan);	
};

#endif //_plAudioFileReader_h