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- /* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
- * Copyright 2020 Pierre Ossman for Cendio AB
- *
- * This 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 2 of the License, or
- * (at your option) any later version.
- *
- * This software 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 software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- //
- // Base class for input streams with a buffer
- //
-
- #ifndef __RDR_BUFFEREDINSTREAM_H__
- #define __RDR_BUFFEREDINSTREAM_H__
-
- #include <sys/time.h>
-
- #include <rdr/InStream.h>
-
- namespace rdr {
-
- class BufferedInStream : public InStream {
-
- public:
- virtual ~BufferedInStream();
-
- virtual size_t pos();
-
- protected:
- size_t availSpace() { return start + bufSize - end; }
-
- void ensureSpace(size_t needed);
-
- private:
- virtual bool fillBuffer() = 0;
-
- virtual bool overrun(size_t needed);
-
- private:
- size_t bufSize;
- size_t offset;
- U8* start;
-
- struct timeval lastSizeCheck;
- size_t peakUsage;
-
- protected:
- BufferedInStream();
- };
-
- } // end of namespace rdr
-
- #endif
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