initial commit
This commit is contained in:
@@ -0,0 +1,193 @@
|
||||
/*
|
||||
* The Progressive Graphics File; http://www.libpgf.org
|
||||
*
|
||||
* $Date: 2007-06-11 10:56:17 +0200 (Mo, 11 Jun 2007) $
|
||||
* $Revision: 299 $
|
||||
*
|
||||
* This file Copyright (C) 2006 xeraina GmbH, Switzerland
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE
|
||||
* as published by the Free Software Foundation; either version 2.1
|
||||
* of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program 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 program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// @file PGFstream.h
|
||||
/// @brief PGF stream class
|
||||
/// @author C. Stamm
|
||||
|
||||
#ifndef PGF_STREAM_H
|
||||
#define PGF_STREAM_H
|
||||
|
||||
#include "PGFtypes.h"
|
||||
#include <new>
|
||||
|
||||
/////////////////////////////////////////////////////////////////////
|
||||
/// Abstract stream base class.
|
||||
/// @author C. Stamm
|
||||
/// @brief Abstract stream base class
|
||||
class CPGFStream {
|
||||
public:
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// Standard constructor.
|
||||
CPGFStream() {}
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// Standard destructor.
|
||||
virtual ~CPGFStream() {}
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// Write some bytes out of a buffer into this stream.
|
||||
/// @param count A pointer to a value containing the number of bytes should be written. After this call it contains the number of written bytes.
|
||||
/// @param buffer A memory buffer
|
||||
virtual void Write(int *count, void *buffer)=0;
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// Read some bytes from this stream and stores them into a buffer.
|
||||
/// @param count A pointer to a value containing the number of bytes should be read. After this call it contains the number of read bytes.
|
||||
/// @param buffer A memory buffer
|
||||
virtual void Read(int *count, void *buffer)=0;
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// Set stream position either absolute or relative.
|
||||
/// @param posMode A position mode (FSFromStart, FSFromCurrent, FSFromEnd)
|
||||
/// @param posOff A new stream position (absolute positioning) or a position offset (relative positioning)
|
||||
virtual void SetPos(short posMode, INT64 posOff)=0;
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// Get current stream position.
|
||||
/// @return Current stream position
|
||||
virtual UINT64 GetPos() const=0;
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
/// Check stream validity.
|
||||
/// @return True if stream and current position is valid
|
||||
virtual bool IsValid() const=0;
|
||||
};
|
||||
|
||||
/////////////////////////////////////////////////////////////////////
|
||||
/// A PGF stream subclass for external storage files.
|
||||
/// @author C. Stamm
|
||||
/// @brief File stream class
|
||||
class CPGFFileStream : public CPGFStream {
|
||||
protected:
|
||||
HANDLE m_hFile; ///< file handle
|
||||
|
||||
public:
|
||||
CPGFFileStream() : m_hFile(0) {}
|
||||
/// Constructor
|
||||
/// @param hFile File handle
|
||||
CPGFFileStream(HANDLE hFile) : m_hFile(hFile) {}
|
||||
/// @return File handle
|
||||
HANDLE GetHandle() { return m_hFile; }
|
||||
|
||||
virtual ~CPGFFileStream() { m_hFile = 0; }
|
||||
virtual void Write(int *count, void *buffer); // throws IOException
|
||||
virtual void Read(int *count, void *buffer); // throws IOException
|
||||
virtual void SetPos(short posMode, INT64 posOff); // throws IOException
|
||||
virtual UINT64 GetPos() const; // throws IOException
|
||||
virtual bool IsValid() const { return m_hFile != 0; }
|
||||
};
|
||||
|
||||
/////////////////////////////////////////////////////////////////////
|
||||
/// A PGF stream subclass for internal memory.
|
||||
/// @author C. Stamm
|
||||
/// @brief Memory stream class
|
||||
class CPGFMemoryStream : public CPGFStream {
|
||||
protected:
|
||||
UINT8 *m_buffer, *m_pos;///< buffer start address and current buffer address
|
||||
UINT8 *m_eos; ///< end of stream (first address beyond written area)
|
||||
size_t m_size; ///< buffer size
|
||||
bool m_allocated; ///< indicates a new allocated buffer
|
||||
|
||||
public:
|
||||
/// Constructor
|
||||
/// @param size Size of new allocated memory buffer
|
||||
CPGFMemoryStream(size_t size);
|
||||
|
||||
/// Constructor. Use already allocated memory of given size
|
||||
/// @param pBuffer Memory location
|
||||
/// @param size Memory size
|
||||
CPGFMemoryStream(UINT8 *pBuffer, size_t size);
|
||||
|
||||
/// Use already allocated memory of given size
|
||||
/// @param pBuffer Memory location
|
||||
/// @param size Memory size
|
||||
void Reinitialize(UINT8 *pBuffer, size_t size);
|
||||
|
||||
virtual ~CPGFMemoryStream() {
|
||||
m_pos = 0;
|
||||
if (m_allocated) {
|
||||
// the memory buffer has been allocated inside of CPMFmemoryStream constructor
|
||||
delete[] m_buffer; m_buffer = 0;
|
||||
}
|
||||
}
|
||||
|
||||
virtual void Write(int *count, void *buffer); // throws IOException
|
||||
virtual void Read(int *count, void *buffer);
|
||||
virtual void SetPos(short posMode, INT64 posOff); // throws IOException
|
||||
virtual UINT64 GetPos() const { ASSERT(IsValid()); return m_pos - m_buffer; }
|
||||
virtual bool IsValid() const { return m_buffer != 0; }
|
||||
|
||||
/// @return Memory size
|
||||
size_t GetSize() const { return m_size; }
|
||||
/// @return Memory buffer
|
||||
const UINT8* GetBuffer() const { return m_buffer; }
|
||||
/// @return Memory buffer
|
||||
UINT8* GetBuffer() { return m_buffer; }
|
||||
/// @return relative position of end of stream (= stream length)
|
||||
UINT64 GetEOS() const { ASSERT(IsValid()); return m_eos - m_buffer; }
|
||||
/// @param length Stream length (= relative position of end of stream)
|
||||
void SetEOS(UINT64 length) { ASSERT(IsValid()); m_eos = m_buffer + length; }
|
||||
};
|
||||
|
||||
/////////////////////////////////////////////////////////////////////
|
||||
/// A PGF stream subclass for internal memory files. Usable only with MFC.
|
||||
/// @author C. Stamm
|
||||
/// @brief Cached memory file stream class
|
||||
#ifdef _MFC_VER
|
||||
class CPGFMemFileStream : public CPGFStream {
|
||||
protected:
|
||||
CMemFile *m_memFile; ///< MFC memory file
|
||||
public:
|
||||
CPGFMemFileStream(CMemFile *memFile) : m_memFile(memFile) {}
|
||||
virtual bool IsValid() const { return m_memFile != nullptr; }
|
||||
virtual ~CPGFMemFileStream() {}
|
||||
virtual void Write(int *count, void *buffer); // throws IOException
|
||||
virtual void Read(int *count, void *buffer); // throws IOException
|
||||
virtual void SetPos(short posMode, INT64 posOff); // throws IOException
|
||||
virtual UINT64 GetPos() const; // throws IOException
|
||||
};
|
||||
#endif
|
||||
|
||||
/////////////////////////////////////////////////////////////////////
|
||||
/// A PGF stream subclass for IStream. Usable only with COM.
|
||||
/// @author C. Stamm
|
||||
/// @brief COM IStream class
|
||||
#if defined(WIN32) || defined(WINCE)
|
||||
class CPGFIStream : public CPGFStream {
|
||||
protected:
|
||||
IStream *m_stream; ///< COM+ IStream
|
||||
public:
|
||||
CPGFIStream(IStream *stream) : m_stream(stream) { m_stream->AddRef(); }
|
||||
virtual bool IsValid() const { return m_stream != 0; }
|
||||
virtual ~CPGFIStream() { m_stream->Release(); }
|
||||
virtual void Write(int *count, void *buffer); // throws IOException
|
||||
virtual void Read(int *count, void *buffer); // throws IOException
|
||||
virtual void SetPos(short posMode, INT64 posOff); // throws IOException
|
||||
virtual UINT64 GetPos() const; // throws IOException
|
||||
IStream* GetIStream() const { return m_stream; }
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif // PGF_STREAM_H
|
||||
Reference in New Issue
Block a user