cinterl.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- /*
- *
- * CINTERL.h
- *
- * A class to handle interleaving and error correcting basic RealAudio file types
- *
- * We currently use two different algorithms to interleave files for transfer over the Net.
- *
- * INT3 is used with RA_FORMAT_3 files. RA_FORMAT_3 files are stored in non-interleaved
- * format and are sent over the NET interleaved using the INT3 algorithm.
- *
- * INT4 is used with RA_FORMAT_4 files. RA_FORMAT_4 files are stored in interleaved
- * format and are sent over the NET interleaved using the INT4 algorithm. RA_FORMAT_4
- * have have the first several blocks of data sent non-interleaved.
- *
- *
- */
- #ifdef __MWERKS__
- #pragma once
- #endif
- #ifndef _CINTERL
- #define _CINTERL
- #include "hxtypes.h"
- #include "hxresult.h"
- #define RA_NO_INTERLEAVER "Int0" // no interleaver for this file
- #define RA_INTERLEAVER_3_ID "Int3" // interleaver used for version 3 format
- #define RA_INTERLEAVER_4_ID "Int4" // interleaver used for version 4 format
- #define RA_INTERLEAVER_5_ID "Int5" // interleaver used for 05_6 codec
- #define RA_INTERLEAVER_6_ID "sipr" // interleaver used for SIPRO codec
- #define RA_INTERLEAVER_GENERIC_ID "genr" // generic interleaver
- #define RA_INTERLEAVER_VBRS_ID "vbrs" // Simple VBR interleaver
- #define RA_INTERLEAVER_VBRF_ID "vbrf" // Simple VBR interleaver (with possibly fragmenting)
- #define MAX_INTER_LENGTH 5 // max length of interleave name
- #define INTERPROP_INPLACE 0x01
- class CInterleave
- {
- public:
- // Construct creates the correct instance of a CInterleave object depending
- // on the requested interleaverName. If an error occurs it will be returned
- // in the error and Construct will return a NULL pointer. If successful,
- // Construct will return a pointer to a CInterleave object and set
- // theErr == HX_NO_ERROR
- static CInterleave* Construct (char *interleaverName, HX_RESULT *theErr, void *pParam);
-
- virtual ~CInterleave (void);
- virtual HX_RESULT Init (UINT16 *frameSize,
- UINT16 *blockSize,
- UINT16 *interleaveFactor,
- UINT16 *pattern) = 0;
- virtual HX_RESULT Interleave (unsigned char *inBuf,unsigned char *outBuf) = 0;
- virtual HX_RESULT Deinterleave (unsigned char *InBuffer,
- UINT16 InLength,
- unsigned char *OutBuffer,
- UINT16 *pOutLength,
- ULONG32 *present = 0) = 0;
- virtual HX_RESULT ErrorCorrection (ULONG32 granularity,
- ULONG32 *present,
- ULONG32 interleaveStartPos,
- char *inData,
- char *outData,
- INT32 *outLength,
- ULONG32 *received,
- UINT16 *lengths,
- UINT16 interleaveFactor,
- UINT16 period,
- UINT16 blockSize) = 0;
- virtual HX_RESULT ErrorCorrection2 (Byte* inData,
- UINT16 InLength,
- Byte* outData,
- UINT16* pOutLength,
- ULONG32* received,
- ULONG32 ulGranularity) = 0;
- virtual ULONG32 GetProperties( void );
- virtual void SetVBRDataSize(UINT32 ulSize) {};
- protected:
- // constructor is protected. Use Construct to create the correct instance of CInterleave
- CInterleave (void);
- UINT16 mBlockSize;
- UINT16 mInterleaveFactor;
- ULONG32 mOutSuperBlockSize;
- ULONG32 mInSuperBlockSize;
- };
- #endif // _CHXDATAFILE_H_