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# BaseSplitterFile.h

    00001 /*
    00002  *      Copyright (C) 2003-2005 Gabest
    00003  *      http://www.gabest.org
    00004  *
    00005  *  This Program is free software; you can redistribute it and/or modify
    00006  *  it under the terms of the GNU General Public License as published by
    00007  *  the Free Software Foundation; either version 2, or (at your option)
    00008  *  any later version.
    00009  *
    00010  *  This Program is distributed in the hope that it will be useful,
    00011  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    00013  *  GNU General Public License for more details.
    00014  *
    00015  *  You should have received a copy of the GNU General Public License
    00016  *  along with GNU Make; see the file COPYING.  If not, write to
    00017  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
    00018  *  http://www.gnu.org/copyleft/gpl.html
    00019  *
    00020  */
    00021
    00022 #pragma once
    00023
    00024 #include <atlcoll.h>
    00025
    00026 class CBaseSplitterFile
    00027 {
    00028         CComPtr<IAsyncReader> m_pAsyncReader;
    00029         CAutoVectorPtr<BYTE> m_pCache;
    00030         __int64 m_cachepos, m_cachelen, m_cachetotal;
    00031
    00032         bool m_fStreaming;
    00033         __int64 m_pos, m_len;
    00034
    00035 protected:
    00036         UINT64 m_bitbuff;
    00037         int m_bitlen;
    00038
    00039         enum {DEFAULT_CACHELEN = 2048};
    00040
    00041 public:
    00042         CBaseSplitterFile(IAsyncReader* pReader, HRESULT& hr, int cachelen = DEFAULT_CACHELEN);
    00043         virtual ~CBaseSplitterFile() {}
    00044
    00045         bool SetCacheSize(int cachelen = DEFAULT_CACHELEN);
    00046
    00047         __int64 GetPos();
    00048         __int64 GetLength();
    00049         virtual void Seek(__int64 pos);
    00050         virtual HRESULT Read(BYTE* pData, __int64 len);
    00051
    00052         UINT64 UExpGolombRead();
    00053         INT64 SExpGolombRead();
    00054
    00055         UINT64 BitRead(int nBits, bool fPeek = false);
    00056         void BitByteAlign(), BitFlush();
    00057         HRESULT ByteRead(BYTE* pData, __int64 len);
    00058
    00059         bool IsStreaming() {return m_fStreaming;}
    00060         HRESULT HasMoreData(__int64 len = 1, DWORD ms = 1);
    00061 };