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      1 /*M///////////////////////////////////////////////////////////////////////////////////////
      2 //
      3 //  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
      4 //
      5 //  By downloading, copying, installing or using the software you agree to this license.
      6 //  If you do not agree to this license, do not download, install,
      7 //  copy or use the software.
      8 //
      9 //
     10 //                           License Agreement
     11 //                For Open Source Computer Vision Library
     12 //
     13 // Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
     14 // Copyright (C) 2009, Willow Garage Inc., all rights reserved.
     15 // Third party copyrights are property of their respective owners.
     16 //
     17 // Redistribution and use in source and binary forms, with or without modification,
     18 // are permitted provided that the following conditions are met:
     19 //
     20 //   * Redistribution's of source code must retain the above copyright notice,
     21 //     this list of conditions and the following disclaimer.
     22 //
     23 //   * Redistribution's in binary form must reproduce the above copyright notice,
     24 //     this list of conditions and the following disclaimer in the documentation
     25 //     and/or other materials provided with the distribution.
     26 //
     27 //   * The name of the copyright holders may not be used to endorse or promote products
     28 //     derived from this software without specific prior written permission.
     29 //
     30 // This software is provided by the copyright holders and contributors "as is" and
     31 // any express or implied warranties, including, but not limited to, the implied
     32 // warranties of merchantability and fitness for a particular purpose are disclaimed.
     33 // In no event shall the Intel Corporation or contributors be liable for any direct,
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     35 // (including, but not limited to, procurement of substitute goods or services;
     36 // loss of use, data, or profits; or business interruption) however caused
     37 // and on any theory of liability, whether in contract, strict liability,
     38 // or tort (including negligence or otherwise) arising in any way out of
     39 // the use of this software, even if advised of the possibility of such damage.
     40 //
     41 //M*/
     42 
     43 #ifndef _GRFMT_PxM_H_
     44 #define _GRFMT_PxM_H_
     45 
     46 #include "grfmt_base.hpp"
     47 #include "bitstrm.hpp"
     48 
     49 namespace cv
     50 {
     51 
     52 class PxMDecoder : public BaseImageDecoder
     53 {
     54 public:
     55 
     56     PxMDecoder();
     57     virtual ~PxMDecoder();
     58 
     59     bool  readData( Mat& img );
     60     bool  readHeader();
     61     void  close();
     62 
     63     size_t signatureLength() const;
     64     bool checkSignature( const String& signature ) const;
     65     ImageDecoder newDecoder() const;
     66 
     67 protected:
     68 
     69     RLByteStream    m_strm;
     70     PaletteEntry    m_palette[256];
     71     int             m_bpp;
     72     int             m_offset;
     73     bool            m_binary;
     74     int             m_maxval;
     75 };
     76 
     77 
     78 class PxMEncoder : public BaseImageEncoder
     79 {
     80 public:
     81     PxMEncoder();
     82     virtual ~PxMEncoder();
     83 
     84     bool  isFormatSupported( int depth ) const;
     85     bool  write( const Mat& img, const std::vector<int>& params );
     86 
     87     ImageEncoder newEncoder() const;
     88 };
     89 
     90 }
     91 
     92 #endif/*_GRFMT_PxM_H_*/
     93