86 lines
4.5 KiB
C
86 lines
4.5 KiB
C
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/* r_access.h
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*
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* 2006-09-21 tcv
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* random access to images and regions
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*/
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#ifndef IM_R_ACCESS_H
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#define IM_R_ACCESS_H
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#include <vips/vips.h>
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/** ARRAY MEMBER MACROS **/
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/* these are local */
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#define IM__TYPE_FROM_ARRAY(type,vptr,i) ( ((type*) (vptr))[i] )
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#define IM__CHAR_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( gint8, (vptr), (i) )
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#define IM__UCHAR_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( guint8, (vptr), (i) )
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#define IM__SHORT_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( gint16, (vptr), (i) )
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#define IM__USHORT_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( guint16, (vptr), (i) )
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#define IM__INT_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( gint32, (vptr), (i) )
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#define IM__UINT_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( guint32, (vptr), (i) )
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#define IM__FLOAT_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( float, (vptr), (i) )
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#define IM__DOUBLE_FROM_ARRAY(vptr,i) IM__TYPE_FROM_ARRAY( double, (vptr), (i) )
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#define IM__VALUE_FROM_ARRAY(band_fmt,vptr,i) ( \
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( IM_BANDFMT_DOUBLE == (band_fmt) ) ? IM__DOUBLE_FROM_ARRAY( (vptr), (i) ) \
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: ( IM_BANDFMT_FLOAT == (band_fmt) ) ? IM__FLOAT_FROM_ARRAY( (vptr), (i) ) \
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: ( IM_BANDFMT_INT == (band_fmt) ) ? IM__INT_FROM_ARRAY( (vptr), (i) ) \
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: ( IM_BANDFMT_UINT == (band_fmt) ) ? IM__UINT_FROM_ARRAY( (vptr), (i) ) \
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: ( IM_BANDFMT_SHORT == (band_fmt) ) ? IM__SHORT_FROM_ARRAY( (vptr), (i) ) \
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: ( IM_BANDFMT_USHORT == (band_fmt) ) ? IM__USHORT_FROM_ARRAY( (vptr), (i) ) \
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: ( IM_BANDFMT_CHAR == (band_fmt) ) ? IM__CHAR_FROM_ARRAY( (vptr), (i) ) \
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: IM__UCHAR_FROM_ARRAY( (vptr), (i) ) )
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#define IM__ARRAY_ASSIGNMENT(band_fmt,vptr,i,val) ( \
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( IM_BANDFMT_DOUBLE == (band_fmt) ) ? ( IM__DOUBLE_FROM_ARRAY( (vptr), (i) )= (val) ) \
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: ( IM_BANDFMT_FLOAT == (band_fmt) ) ? ( IM__FLOAT_FROM_ARRAY( (vptr), (i) )= (val) ) \
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: ( IM_BANDFMT_INT == (band_fmt) ) ? ( IM__INT_FROM_ARRAY( (vptr), (i) )= (val) ) \
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: ( IM_BANDFMT_UINT == (band_fmt) ) ? ( IM__UINT_FROM_ARRAY( (vptr), (i) )= (val) ) \
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: ( IM_BANDFMT_SHORT == (band_fmt) ) ? ( IM__SHORT_FROM_ARRAY( (vptr), (i) )= (val) ) \
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: ( IM_BANDFMT_USHORT == (band_fmt) ) ? ( IM__USHORT_FROM_ARRAY( (vptr), (i) )= (val) ) \
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: ( IM_BANDFMT_CHAR == (band_fmt) ) ? ( IM__CHAR_FROM_ARRAY( (vptr), (i) )= (val) ) \
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: ( IM__UCHAR_FROM_ARRAY( (vptr), (i) )= (val) ) )
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#define IM__ARRAY_INCREMENT(band_fmt,vptr,i,val) ( \
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( IM_BANDFMT_DOUBLE == (band_fmt) ) ? ( IM__DOUBLE_FROM_ARRAY( (vptr), (i) )+= (val) ) \
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: ( IM_BANDFMT_FLOAT == (band_fmt) ) ? ( IM__FLOAT_FROM_ARRAY( (vptr), (i) )+= (val) ) \
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: ( IM_BANDFMT_INT == (band_fmt) ) ? ( IM__INT_FROM_ARRAY( (vptr), (i) )+= (val) ) \
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: ( IM_BANDFMT_UINT == (band_fmt) ) ? ( IM__UINT_FROM_ARRAY( (vptr), (i) )+= (val) ) \
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: ( IM_BANDFMT_SHORT == (band_fmt) ) ? ( IM__SHORT_FROM_ARRAY( (vptr), (i) )+= (val) ) \
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: ( IM_BANDFMT_USHORT == (band_fmt) ) ? ( IM__USHORT_FROM_ARRAY( (vptr), (i) )+= (val) ) \
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: ( IM_BANDFMT_CHAR == (band_fmt) ) ? ( IM__CHAR_FROM_ARRAY( (vptr), (i) )+= (val) ) \
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: ( IM__UCHAR_FROM_ARRAY( (vptr), (i) )+= (val) ) )
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/** IMAGE MEMBER MACROS **/
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/* export these */
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#define IM_IMAGE_VALUE(im,x,y,band) IM__VALUE_FROM_ARRAY( (im)-> BandFmt, \
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IM_IMAGE_ADDR( (im), (x), (y) ), (band) )
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#define IM_IMAGE_ASSIGNMENT(im,x,y,band,val) IM__ARRAY_ASSIGNMENT( (im)-> BandFmt, \
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IM_IMAGE_ADDR( (im), (x), (y) ), (band), (val) )
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#define IM_IMAGE_INCREMENT(im,x,y,band,val) IM__ARRAY_INCREMENT( (im)-> BandFmt, \
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IM_IMAGE_ADDR( (im), (x), (y) ), (band), (val) )
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/** REGION MEMBER MACROS **/
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/* export these */
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#define IM_REGION_VALUE(reg,x,y,band) IM__VALUE_FROM_ARRAY( (reg)-> im-> BandFmt, \
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IM_REGION_ADDR( (reg), (x), (y) ), (band) )
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#define IM_REGION_ASSIGNMENT(reg,x,y,band,val) IM__ARRAY_ASSIGNMENT( (reg)-> im-> BandFmt, \
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IM_REGION_ADDR( (reg), (x), (y) ), (band), (val) )
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#define IM_REGION_INCREMENT(reg,x,y,band,val) IM__ARRAY_INCREMENT( (reg)-> im-> BandFmt, \
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IM_REGION_ADDR( (reg), (x), (y) ), (band), (val) )
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#endif /* IM_R_ACCESS_H */
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