amrff.h
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上传日期:2013-07-19
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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 AMRFF_H
- #define AMRFF_H
- #define AMR_HEADER_READ_SIZE 64
- #define AMR_READ_SIZE 4096
- #define AMR_IDEAL_PACKET_SIZE 512
- #define AMR_MIN_CONSEC_FRAMES 5
- // Forward declarations
- typedef _INTERFACE IHXRequest IHXRequest;
- typedef _INTERFACE IHXFormatResponse IHXFormatResponse;
- typedef _INTERFACE IHXFileObject IHXFileObject;
- typedef _INTERFACE IHXBuffer IHXBuffer;
- typedef _INTERFACE IHXCommonClassFactory IHXCommonClassFactory;
- typedef _INTERFACE IHXFileObject IHXFileObject;
- typedef _INTERFACE IHXFormatResponse IHXFormatResponse;
- typedef _INTERFACE IHXFileStat IHXFileStat;
- class CHXAMRPayloadFormatPacketizer;
- class CAMRFileFormat : public CHXBaseCountingObject,
- public IHXPlugin,
- public IHXFileFormatObject,
- public IHXFileResponse,
- public IHXFileStatResponse,
- public IHXInterruptSafe
- {
- public:
- CAMRFileFormat();
- virtual ~CAMRFileFormat();
- // IUnknown methods
- STDMETHOD(QueryInterface) (THIS_ REFIID riid, void** ppvObj);
- STDMETHOD_(ULONG32,AddRef) (THIS);
- STDMETHOD_(ULONG32,Release) (THIS);
- // IHXPlugin methods
- STDMETHOD(GetPluginInfo) (THIS_ REF(BOOL) rbLoadMultiple,
- REF(const char*) rpszDescription,
- REF(const char*) rpszCopyright,
- REF(const char*) rpszMoreInfoURL,
- REF(ULONG32) rulVersionNumber);
- STDMETHOD(InitPlugin) (THIS_ IUnknown* pContext);
- // IHXFileFormatObject methods
- STDMETHOD(GetFileFormatInfo) (THIS_ REF(const char**) rppszFileMimeTypes,
- REF(const char**) rppszFileExtensions,
- REF(const char**) rppszFileOpenNames);
- STDMETHOD(InitFileFormat) (THIS_ IHXRequest* pRequest,
- IHXFormatResponse* pFormatResponse,
- IHXFileObject* pFileObject);
- STDMETHOD(Close) (THIS);
- STDMETHOD(GetFileHeader) (THIS);
- STDMETHOD(GetStreamHeader) (THIS_ UINT16 unStreamNumber);
- STDMETHOD(GetPacket) (THIS_ UINT16 unStreamNumber);
- STDMETHOD(Seek) (THIS_ ULONG32 ulOffset);
- // IHXFileResponse methods
- STDMETHOD(InitDone) (THIS_ HX_RESULT status);
- STDMETHOD(SeekDone) (THIS_ HX_RESULT status);
- STDMETHOD(ReadDone) (THIS_ HX_RESULT status, IHXBuffer *pBuffer);
- STDMETHOD(WriteDone) (THIS_ HX_RESULT status);
- STDMETHOD(CloseDone) (THIS_ HX_RESULT status);
- // IHXFileStatResponse methods
- STDMETHOD(StatDone) (THIS_ HX_RESULT status, UINT32 ulSize, UINT32 ulCreationTime,
- UINT32 ulAccessTime, UINT32 ulModificationTime, UINT32 ulMode);
- // IHXInterruptSafe methods
- STDMETHOD_(BOOL,IsInterruptSafe) (THIS) { return TRUE; };
- // CAMRFileFormat methods
- static HX_RESULT STDAPICALLTYPE HXCreateInstance(IUnknown** ppIUnknown);
- static HX_RESULT STDAPICALLTYPE CanUnload2(void);
- private:
- typedef enum
- {
- StateReady,
- StateInitFileFormatInitDonePending,
- StateInitFileFormatStatDonePending,
- StateFileHeaderSeekDonePending,
- StateFileHeaderReadDonePending,
- StateStreamHeaderSeekDonePending,
- StateStreamHeaderReadDonePending,
- StateGetPacketSeekDonePending,
- StateGetPacketReadDonePending
- } AMRFFState;
- INT32 m_lRefCount;
- IUnknown* m_pContext;
- IHXCommonClassFactory* m_pCommonClassFactory;
- IHXFileObject* m_pFileObject;
- IHXFormatResponse* m_pFormatResponse;
- AMRFFState m_eState;
- IHXFileStat* m_pFileStat;
- UINT32 m_ulHeaderSize;
- UINT32 m_ulBytesPerFrame;
- UINT32 m_ulFileSize;
- UINT32 m_ulNumChannels;
- UINT32 m_ulNextFileOffset;
- UINT32 m_ulNextTimeStamp;
- CHXAMRPayloadFormatPacketizer* m_pPayloadFormat;
- HX_BITFIELD m_bWideBand : 1;
- HX_BITFIELD m_bScanForFrameBegin : 1;
- static const char* const m_pszDescription;
- static const char* const m_pszCopyright;
- static const char* const m_pszMoreInfoURL;
- static const char* const m_ppszFileMimeTypes[];
- static const char* const m_ppszFileExtensions[];
- static const char* const m_ppszFileOpenNames[];
- static const char* const m_ppszStreamMimeTypes[];
- static const BYTE m_pMagicSingle[6];
- static const BYTE m_pMagicSingleWB[9];
- static const BYTE m_pMagicMulti[12];
- static const BYTE m_pMagicMultiWB[15];
- static const BYTE m_ucNumChannelsMap[16];
- HX_RESULT GetStreamInfo(IHXBuffer* pBuffer, UINT32 ulOffset,
- REF(UINT32) rulAvgBitRate, REF(UINT32) rulBytesPerFrame);
- HX_RESULT MakeRawFilePacket(IHXBuffer* pBuffer, UINT32 ulTimeStamp,
- REF(IHXPacket*) rpPacket);
- };
- #endif // #ifndef AMRFF_H