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47 #include <ImfChromaticities.h>
48 #include <ImfInputFile.h>
49 #include <ImfChannelList.h>
51 #include "grfmt_base.h"
54 using namespace Imath;
56 /* libpng version only */
58 class GrFmtExrReader : public GrFmtReader
62 GrFmtExrReader( const char* filename );
65 bool ReadData( uchar* data, int step, int color );
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 );
81 const Channel *m_green;
82 const Channel *m_blue;
83 Chromaticities m_chroma;
87 class GrFmtExrWriter : public GrFmtWriter
91 GrFmtExrWriter( const char* filename );
94 bool IsFormatSupported( int depth );
95 bool WriteImage( const uchar* data, int step,
96 int width, int height, int depth, int channels );
101 // Exr filter factory
102 class GrFmtExr : public GrFmtFilterFactory
109 GrFmtReader* NewReader( const char* filename );
110 GrFmtWriter* NewWriter( const char* filename );
111 // bool CheckSignature( const char* signature );
116 #endif/*_GRFMT_EXR_H_*/