amr-depack.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 ***** */
-
- #ifndef AMR_DEPACK_H
- #define AMR_DEPACK_H
- #include "hxtypes.h"
- #include "amr_flavor.h"
- #include "amr_frame_info.h"
- #include "amr_block_buf.h"
- class Bitstream;
- class AMRTOCInfo;
- typedef void (*OnFrameCB)(void* pUserData,
- ULONG32 ulTime,
- const UINT8* pData, ULONG32 ulSize,
- BOOL bPreviousLoss);
- class AMRDepack
- {
- public:
- AMRDepack();
- ~AMRDepack();
- BOOL Init(AMRFlavor flavor,
- BOOL bOctetAlign,
- ULONG32 ulModeSet,
- ULONG32 ulChangePeriod,
- BOOL bChangeNeighbor,
- ULONG32 ulMaxPtime,
- BOOL bHasCRC,
- BOOL bRobustSort,
- ULONG32 ulMaxInterleave,
- ULONG32 ulPtime,
- ULONG32 ulChannels,
- OnFrameCB pFrameCB,
- void* pUserData);
- BOOL Reset(); // Completely reset the depacketizer state
- BOOL Flush(); // Indicates end of stream
- BOOL OnPacket(ULONG32 ulTime,
- const UINT8* pData, ULONG32 ulSize,
- BOOL bMarker);
- BOOL OnLoss(ULONG32 ulNumPackets); // called to indicate lost packets
- void SetTSSampleRate(ULONG32 ulTSSampleRate);
- protected:
- BOOL UpdateIleavInfo(ULONG32 ulILL, ULONG32 ulILP, ULONG32 ulTime);
- void GetTOCInfo(Bitstream& bs, AMRTOCInfo& tocInfo);
- void SkipCRCInfo(Bitstream& bs, const AMRTOCInfo& tocInfo);
- void UpdateBlockCount(ULONG32 ulBlockCount);
- // Copies linear frame data to m_blockBuf
- void LinearCopy(Bitstream& bs, ULONG32 ulStartBlock, ULONG32 ulBlockInc,
- const AMRTOCInfo& tocInfo);
- ULONG32 GetFrameBlock(Bitstream& bs,
- UINT8* pStart,
- const AMRTOCInfo& tocInfo,
- ULONG32 ulStartEntry,
- ULONG32 ulChannels);
- // Copies robust sorted frame data to m_blockBuf
- void SortedCopy(Bitstream& bs, ULONG32 ulStartBlock, ULONG32 ulBlockInc,
- const AMRTOCInfo& tocInfo);
- void DispatchBlocks(ULONG32 ulTimestamp);
- void DispatchFrameBlock(ULONG32 ulTimestamp,
- const UINT8* pFrame, ULONG32 ulFrameSize);
-
- ULONG32 GetFrameBits(UINT32 frameType) const;
- ULONG32 GetMaxFrameBits() const;
- private:
- AMRFlavor m_flavor;
- ULONG32 m_ulTimestampInc;
- BOOL m_bOctetAlign;
- ULONG32 m_ulModeSet;
- BOOL m_bHasCRC;
- BOOL m_bRobustSort;
- ULONG32 m_ulMaxInterleave;
- ULONG32 m_ulPtime;
- ULONG32 m_ulChannels;
- void* m_pUserData;
- OnFrameCB m_pCallback;
- BOOL m_bPacketsLost;
- BOOL m_bLastTimeValid;
- ULONG32 m_ulLastTimestamp;
- ULONG32 m_ulIleavIndex;
- ULONG32 m_ulIleavLength;
- ULONG32 m_ulIleavBlockCount;
- ULONG32 m_ulIleavBaseTime;
- AMRBlockBuffer m_blockBuf;
- };
- inline
- ULONG32 AMRDepack::GetFrameBits(UINT32 frameType) const
- {
- return CAMRFrameInfo::FrameBits(m_flavor, frameType);
- }
- inline
- ULONG32 AMRDepack::GetMaxFrameBits() const
- {
- return CAMRFrameInfo::MaxFrameBits(m_flavor);
- }
- #endif // AMR_DEPACK_H