1/*M///////////////////////////////////////////////////////////////////////////////////////
2//
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4//
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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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40//M*/
41
42#ifndef _GRFMT_EXR_H_
43#define _GRFMT_EXR_H_
44
45#ifdef HAVE_ILMIMF
46
47#include <ImfChromaticities.h>
48#include <ImfInputFile.h>
49#include <ImfChannelList.h>
50#include <ImathBox.h>
51#include "grfmt_base.h"
52
53using namespace Imf;
54using namespace Imath;
55
56/* libpng version only */
57
58class GrFmtExrReader : public GrFmtReader
59{
60public:
61
62    GrFmtExrReader( const char* filename );
63    ~GrFmtExrReader();
64
65    bool  ReadData( uchar* data, int step, int color );
66    bool  ReadHeader();
67    void  Close();
68
69protected:
70    void  UpSample( uchar *data, int xstep, int ystep, int xsample, int ysample );
71    void  UpSampleX( float *data, int xstep, int xsample );
72    void  UpSampleY( uchar *data, int xstep, int ystep, int ysample );
73    void  ChromaToBGR( float *data, int numlines, int step );
74    void  RGBToGray( float *in, float *out );
75
76    InputFile      *m_file;
77    PixelType       m_type;
78    Box2i           m_datawindow;
79    bool            m_ischroma;
80    const Channel  *m_red;
81    const Channel  *m_green;
82    const Channel  *m_blue;
83    Chromaticities  m_chroma;
84};
85
86
87class GrFmtExrWriter : public GrFmtWriter
88{
89public:
90
91    GrFmtExrWriter( const char* filename );
92    ~GrFmtExrWriter();
93
94    bool  IsFormatSupported( int depth );
95    bool  WriteImage( const uchar* data, int step,
96                      int width, int height, int depth, int channels );
97protected:
98};
99
100
101// Exr filter factory
102class GrFmtExr : public GrFmtFilterFactory
103{
104public:
105
106    GrFmtExr();
107    ~GrFmtExr();
108
109    GrFmtReader* NewReader( const char* filename );
110    GrFmtWriter* NewWriter( const char* filename );
111//    bool CheckSignature( const char* signature );
112};
113
114#endif
115
116#endif/*_GRFMT_EXR_H_*/
117