178 lines
4.7 KiB
C++
178 lines
4.7 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// Intel License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000, Intel Corporation, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of Intel Corporation may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef _GRFMT_TIFF_H_
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#define _GRFMT_TIFF_H_
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#include "grfmt_base.h"
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// native simple TIFF codec
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enum TiffCompression
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{
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TIFF_UNCOMP = 1,
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TIFF_HUFFMAN = 2,
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TIFF_PACKBITS = 32773
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};
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enum TiffByteOrder
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{
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TIFF_ORDER_II = 0x4949,
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TIFF_ORDER_MM = 0x4d4d
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};
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enum TiffTag
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{
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TIFF_TAG_WIDTH = 256,
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TIFF_TAG_HEIGHT = 257,
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TIFF_TAG_BITS_PER_SAMPLE = 258,
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TIFF_TAG_COMPRESSION = 259,
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TIFF_TAG_PHOTOMETRIC = 262,
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TIFF_TAG_STRIP_OFFSETS = 273,
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TIFF_TAG_STRIP_COUNTS = 279,
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TIFF_TAG_SAMPLES_PER_PIXEL = 277,
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TIFF_TAG_ROWS_PER_STRIP = 278,
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TIFF_TAG_PLANAR_CONFIG = 284,
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TIFF_TAG_COLOR_MAP = 320
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};
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enum TiffFieldType
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{
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TIFF_TYPE_BYTE = 1,
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TIFF_TYPE_SHORT = 3,
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TIFF_TYPE_LONG = 4
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};
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#ifdef HAVE_TIFF
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// libtiff based TIFF codec
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class GrFmtTiffReader : public GrFmtReader
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{
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public:
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GrFmtTiffReader( const char* filename );
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~GrFmtTiffReader();
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bool CheckFormat( const char* signature );
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bool ReadData( uchar* data, int step, int color );
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bool ReadHeader();
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void Close();
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protected:
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void* m_tif;
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};
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#else
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class GrFmtTiffReader : public GrFmtReader
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{
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public:
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GrFmtTiffReader( const char* filename );
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~GrFmtTiffReader();
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bool CheckFormat( const char* signature );
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bool ReadData( uchar* data, int step, int color );
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bool ReadHeader();
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void Close();
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protected:
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RLByteStream m_strm;
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PaletteEntry m_palette[256];
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int m_bpp;
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int* m_temp_palette;
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int m_max_pal_length;
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int* m_offsets;
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int m_maxoffsets;
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int m_strips;
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int m_rows_per_strip;
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TiffCompression m_compression;
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TiffByteOrder m_byteorder;
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int GetWordEx();
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int GetDWordEx();
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int ReadTable( int offset, int count, TiffFieldType fieldtype,
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int*& array, int& arraysize );
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};
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#endif
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// ... and writer
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class GrFmtTiffWriter : public GrFmtWriter
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{
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public:
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GrFmtTiffWriter( const char* filename );
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~GrFmtTiffWriter();
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bool WriteImage( const uchar* data, int step,
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int width, int height, int depth, int channels );
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protected:
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WLByteStream m_strm;
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void WriteTag( TiffTag tag, TiffFieldType fieldType,
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int count, int value );
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};
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// TIFF filter factory
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class GrFmtTiff : public GrFmtFilterFactory
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{
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public:
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GrFmtTiff();
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~GrFmtTiff();
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GrFmtReader* NewReader( const char* filename );
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GrFmtWriter* NewWriter( const char* filename );
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bool CheckSignature( const char* signature );
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};
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#endif/*_GRFMT_TIFF_H_*/
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