1/*M///////////////////////////////////////////////////////////////////////////////////////
2//
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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//                        Intel License Agreement
11//                For Open Source Computer Vision Library
12//
13// Copyright (C) 2000, Intel Corporation, all rights reserved.
14// Third party copyrights are property of their respective owners.
15//
16// Redistribution and use in source and binary forms, with or without modification,
17// are permitted provided that the following conditions are met:
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27//     derived from this software without specific prior written permission.
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40//M*/
41
42#ifndef _GRFMT_TIFF_H_
43#define _GRFMT_TIFF_H_
44
45#include "grfmt_base.h"
46
47
48// native simple TIFF codec
49enum TiffCompression
50{
51    TIFF_UNCOMP = 1,
52    TIFF_HUFFMAN = 2,
53    TIFF_PACKBITS = 32773
54};
55
56enum TiffByteOrder
57{
58    TIFF_ORDER_II = 0x4949,
59    TIFF_ORDER_MM = 0x4d4d
60};
61
62
63enum  TiffTag
64{
65    TIFF_TAG_WIDTH  = 256,
66    TIFF_TAG_HEIGHT = 257,
67    TIFF_TAG_BITS_PER_SAMPLE = 258,
68    TIFF_TAG_COMPRESSION = 259,
69    TIFF_TAG_PHOTOMETRIC = 262,
70    TIFF_TAG_STRIP_OFFSETS = 273,
71    TIFF_TAG_STRIP_COUNTS = 279,
72    TIFF_TAG_SAMPLES_PER_PIXEL = 277,
73    TIFF_TAG_ROWS_PER_STRIP = 278,
74    TIFF_TAG_PLANAR_CONFIG = 284,
75    TIFF_TAG_COLOR_MAP = 320
76};
77
78
79enum TiffFieldType
80{
81    TIFF_TYPE_BYTE = 1,
82    TIFF_TYPE_SHORT = 3,
83    TIFF_TYPE_LONG = 4
84};
85
86
87
88#ifdef HAVE_TIFF
89
90// libtiff based TIFF codec
91
92class GrFmtTiffReader : public GrFmtReader
93{
94public:
95
96    GrFmtTiffReader( const char* filename );
97    ~GrFmtTiffReader();
98
99    bool  CheckFormat( const char* signature );
100    bool  ReadData( uchar* data, int step, int color );
101    bool  ReadHeader();
102    void  Close();
103
104protected:
105
106    void* m_tif;
107};
108
109
110#else
111
112class GrFmtTiffReader : public GrFmtReader
113{
114public:
115
116    GrFmtTiffReader( const char* filename );
117    ~GrFmtTiffReader();
118
119    bool  CheckFormat( const char* signature );
120    bool  ReadData( uchar* data, int step, int color );
121    bool  ReadHeader();
122    void  Close();
123
124protected:
125
126    RLByteStream     m_strm;
127    PaletteEntry     m_palette[256];
128    int              m_bpp;
129    int*             m_temp_palette;
130    int              m_max_pal_length;
131    int*             m_offsets;
132    int              m_maxoffsets;
133    int              m_strips;
134    int              m_rows_per_strip;
135    TiffCompression  m_compression;
136    TiffByteOrder    m_byteorder;
137
138    int  GetWordEx();
139    int  GetDWordEx();
140    int  ReadTable( int offset, int count, TiffFieldType fieldtype,
141                    int*& array, int& arraysize );
142};
143
144#endif
145
146// ... and writer
147class GrFmtTiffWriter : public GrFmtWriter
148{
149public:
150
151    GrFmtTiffWriter( const char* filename );
152    ~GrFmtTiffWriter();
153
154    bool  WriteImage( const uchar* data, int step,
155                      int width, int height, int depth, int channels );
156protected:
157
158    WLByteStream  m_strm;
159
160    void  WriteTag( TiffTag tag, TiffFieldType fieldType,
161                    int count, int value );
162};
163
164
165// TIFF filter factory
166class GrFmtTiff : public GrFmtFilterFactory
167{
168public:
169
170    GrFmtTiff();
171    ~GrFmtTiff();
172
173    GrFmtReader* NewReader( const char* filename );
174    GrFmtWriter* NewWriter( const char* filename );
175    bool CheckSignature( const char* signature );
176};
177
178#endif/*_GRFMT_TIFF_H_*/
179