1                 : /******************************************************************************
       2                 :  *
       3                 :  * Purpose:  PCIDSK I/O Interface declaration. The I/O interfaces for the
       4                 :  *           library can be overridden by an object implementing this class.
       5                 :  * 
       6                 :  ******************************************************************************
       7                 :  * Copyright (c) 2009
       8                 :  * PCI Geomatics, 50 West Wilmot Street, Richmond Hill, Ont, Canada
       9                 :  *
      10                 :  * Permission is hereby granted, free of charge, to any person obtaining a
      11                 :  * copy of this software and associated documentation files (the "Software"),
      12                 :  * to deal in the Software without restriction, including without limitation
      13                 :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      14                 :  * and/or sell copies of the Software, and to permit persons to whom the
      15                 :  * Software is furnished to do so, subject to the following conditions:
      16                 :  *
      17                 :  * The above copyright notice and this permission notice shall be included
      18                 :  * in all copies or substantial portions of the Software.
      19                 :  *
      20                 :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      21                 :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      22                 :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      23                 :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      24                 :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      25                 :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      26                 :  * DEALINGS IN THE SOFTWARE.
      27                 :  ****************************************************************************/
      28                 : #ifndef __INCLUDE_PCIDSK_IO_H
      29                 : #define __INCLUDE_PCIDSK_IO_H
      30                 : 
      31                 : #include "pcidsk_config.h"
      32                 : 
      33                 : #include <string>
      34                 : 
      35                 : namespace PCIDSK
      36                 : {
      37                 : /************************************************************************/
      38                 : /*                             IOInterfaces                             */
      39                 : /************************************************************************/
      40                 : 
      41                 : //! IO Interface class.
      42                 : 
      43                 :     class IOInterfaces
      44               8 :     {
      45                 :     public:
      46               8 :         virtual ~IOInterfaces() {}
      47                 :         virtual void   *Open( std::string filename, std::string access ) const = 0;
      48                 :         virtual uint64  Seek( void *io_handle, uint64 offset, int whence ) const = 0;
      49                 :         virtual uint64  Tell( void *io_handle ) const = 0;
      50                 :         virtual uint64  Read( void *buffer, uint64 size, uint64 nmemb, void *io_handle ) const = 0;
      51                 :         virtual uint64  Write( const void *buffer, uint64 size, uint64 nmemb, void *io_handle ) const = 0;
      52                 :         virtual int     Eof( void *io_handle ) const = 0;
      53                 :         virtual int     Flush( void *io_handle ) const = 0;
      54                 :         virtual int     Close( void *io_handle ) const = 0;
      55                 :     };
      56                 : 
      57                 :     const IOInterfaces PCIDSK_DLL *GetDefaultIOInterfaces();
      58                 : 
      59                 : } // end namespace PCIDSK
      60                 : 
      61                 : #endif // __INCLUDE_PCIDSK_IO_H