Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Purpose:  Implementation of the PCIDSKInterfaces class.
       4             :  *
       5             :  ******************************************************************************
       6             :  * Copyright (c) 2009
       7             :  * PCI Geomatics, 90 Allstate Parkway, Markham, Ontario, Canada.
       8             :  *
       9             :  * Permission is hereby granted, free of charge, to any person obtaining a
      10             :  * copy of this software and associated documentation files (the "Software"),
      11             :  * to deal in the Software without restriction, including without limitation
      12             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      13             :  * and/or sell copies of the Software, and to permit persons to whom the
      14             :  * Software is furnished to do so, subject to the following conditions:
      15             :  *
      16             :  * The above copyright notice and this permission notice shall be included
      17             :  * in all copies or substantial portions of the Software.
      18             :  *
      19             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      20             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      21             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      22             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      23             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      24             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      25             :  * DEALINGS IN THE SOFTWARE.
      26             :  ****************************************************************************/
      27             : 
      28             : #include "pcidsk_config.h"
      29             : #include "pcidsk_types.h"
      30             : #include "pcidsk_utils.h"
      31             : #include "pcidsk_interfaces.h"
      32             : #include "pcidsk_mutex.h"
      33             : #include "core/pcidsk_utils.h"
      34             : 
      35             : using namespace PCIDSK;
      36             : 
      37             : /************************************************************************/
      38             : /*                          PCIDSKInterfaces()                          */
      39             : /*                                                                      */
      40             : /*      This constructor just defaults all the interfaces and           */
      41             : /*      functions to the default implementation.                        */
      42             : /************************************************************************/
      43             : 
      44         641 : PCIDSKInterfaces::PCIDSKInterfaces()
      45             : 
      46             : {
      47         641 :     io = GetDefaultIOInterfaces();
      48         641 :     OpenEDB = DefaultOpenEDB;
      49         641 :     MergeRelativePath = DefaultMergeRelativePath;
      50         641 :     CreateMutex = DefaultCreateMutex;
      51         641 :     Debug = DefaultDebug;
      52             : 
      53             : #if defined(HAVE_LIBJPEG)
      54         641 :     JPEGDecompressBlock = LibJPEG_DecompressBlock;
      55         641 :     JPEGCompressBlock = LibJPEG_CompressBlock;
      56             : #else
      57             :     JPEGDecompressBlock = NULL;
      58             :     JPEGCompressBlock = NULL;
      59             : #endif
      60         641 : }
      61             : 
      62             : /**
      63             : 
      64             : \var const IOInterfaces *PCIDSKInterfaces::io;
      65             : 
      66             : \brief Pointer to IO Interfaces.
      67             : 
      68             : ***************************************************************************/
      69             : 
      70             : /**
      71             : 
      72             : \var Mutex *(*PCIDSKInterfaces::CreateMutex)(void);
      73             : 
      74             : \brief Function to create a mutex
      75             : 
      76             : ***************************************************************************/
      77             : 
      78             : /**
      79             : 
      80             : \var void (*PCIDSKInterfaces::JPEGDecompressBlock)(uint8 *src_data, int src_bytes, uint8 *dst_data, int dst_bytes, int xsize, int ysize, eChanType pixel_type);
      81             : 
      82             : \brief Function to decompress a jpeg block
      83             : 
      84             : This function may be NULL if there is no jpeg interface available.
      85             : 
      86             : The default implementation is implemented using libjpeg.
      87             : 
      88             : The function decodes the jpeg compressed image in src_data (src_bytes long)
      89             : into dst_data (dst_bytes long) as image data.  The result should be exactly
      90             : dst_bytes long, and will be an image of xsize x ysize of type pixel_type
      91             : (currently on CHN_8U is allowed).
      92             : 
      93             : Errors should be thrown as exceptions.
      94             : 
      95             : ***************************************************************************/
      96             : 
      97             : /**
      98             : 
      99             : \var void (*PCIDSKInterfaces::JPEGCompressBlock)(uint8 *src_data, int src_bytes, uint8 *dst_data, int &dst_bytes, int xsize, int ysize, eChanType pixel_type);
     100             : 
     101             : \brief Function to compress a jpeg block
     102             : 
     103             : This function may be NULL if there is no jpeg interface available.
     104             : 
     105             : The default implementation is implemented using libjpeg.
     106             : 
     107             : The function encodes the image in src_data (src_bytes long)
     108             : into dst_data as compressed jpeg data.  The passed in value of dst_bytes is the
     109             : size of the passed in dst_data array (it should be large enough to hold
     110             : any compressed result0 and dst_bytes will be returned with the resulting
     111             : actual number of bytes used.
     112             : 
     113             : Errors should be thrown as exceptions.
     114             : 
     115             : ***************************************************************************/
     116             :