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+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+// By downloading, copying, installing or using the software you agree to this license.
+// If you do not agree to this license, do not download, install,
+// copy or use the software.
+//
+//
+// Intel License Agreement
+// For Open Source Computer Vision Library
+//
+// Copyright (C) 2000, Intel Corporation, all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+// * Redistribution's of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// * Redistribution's in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+//
+// * The name of Intel Corporation may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "_cv.h"
+
+/**************************************************************************************\
+* line samplers *
+\**************************************************************************************/
+
+CV_IMPL int
+cvSampleLine( const void* img, CvPoint pt1, CvPoint pt2,
+ void* _buffer, int connectivity )
+{
+ int count = -1;
+
+ CV_FUNCNAME( "cvSampleLine" );
+
+ __BEGIN__;
+
+ int i, coi = 0, pix_size;
+ CvMat stub, *mat = (CvMat*)img;
+ CvLineIterator iterator;
+ uchar* buffer = (uchar*)_buffer;
+
+ CV_CALL( mat = cvGetMat( mat, &stub, &coi ));
+
+ if( coi != 0 )
+ CV_ERROR( CV_BadCOI, "" );
+
+ if( !buffer )
+ CV_ERROR( CV_StsNullPtr, "" );
+
+ CV_CALL( count = cvInitLineIterator( mat, pt1, pt2, &iterator, connectivity ));
+
+ pix_size = CV_ELEM_SIZE(mat->type);
+ for( i = 0; i < count; i++ )
+ {
+ CV_MEMCPY_AUTO( buffer, iterator.ptr, pix_size );
+ buffer += pix_size;
+ CV_NEXT_LINE_POINT( iterator );
+ }
+
+ __END__;
+
+ return count;
+}
+
+
+static const void*
+icvAdjustRect( const void* srcptr, int src_step, int pix_size,
+ CvSize src_size, CvSize win_size,
+ CvPoint ip, CvRect* pRect )
+{
+ CvRect rect;
+ const char* src = (const char*)srcptr;
+
+ if( ip.x >= 0 )
+ {
+ src += ip.x*pix_size;
+ rect.x = 0;
+ }
+ else
+ {
+ rect.x = -ip.x;
+ if( rect.x > win_size.width )
+ rect.x = win_size.width;
+ }
+
+ if( ip.x + win_size.width < src_size.width )
+ rect.width = win_size.width;
+ else
+ {
+ rect.width = src_size.width - ip.x - 1;
+ if( rect.width < 0 )
+ {
+ src += rect.width*pix_size;
+ rect.width = 0;
+ }
+ assert( rect.width <= win_size.width );
+ }
+
+ if( ip.y >= 0 )
+ {
+ src += ip.y * src_step;
+ rect.y = 0;
+ }
+ else
+ rect.y = -ip.y;
+
+ if( ip.y + win_size.height < src_size.height )
+ rect.height = win_size.height;
+ else
+ {
+ rect.height = src_size.height - ip.y - 1;
+ if( rect.height < 0 )
+ {
+ src += rect.height*src_step;
+ rect.height = 0;
+ }
+ }
+
+ *pRect = rect;
+ return src - rect.x*pix_size;
+}
+
+
+#define ICV_DEF_GET_RECT_SUB_PIX_FUNC( flavor, srctype, dsttype, worktype, \
+ cast_macro, scale_macro, cast_macro2 )\
+CvStatus CV_STDCALL icvGetRectSubPix_##flavor##_C1R \
+( const srctype* src, int src_step, CvSize src_size, \
+ dsttype* dst, int dst_step, CvSize win_size, CvPoint2D32f center ) \
+{ \
+ CvPoint ip; \
+ worktype a11, a12, a21, a22, b1, b2; \
+ float a, b; \
+ int i, j; \
+ \
+ center.x -= (win_size.width-1)*0.5f; \
+ center.y -= (win_size.height-1)*0.5f; \
+ \
+ ip.x = cvFloor( center.x ); \
+ ip.y = cvFloor( center.y ); \
+ \
+ a = center.x - ip.x; \
+ b = center.y - ip.y; \
+ a11 = scale_macro((1.f-a)*(1.f-b)); \
+ a12 = scale_macro(a*(1.f-b)); \
+ a21 = scale_macro((1.f-a)*b); \
+ a22 = scale_macro(a*b); \
+ b1 = scale_macro(1.f - b); \
+ b2 = scale_macro(b); \
+ \
+ src_step /= sizeof(src[0]); \
+ dst_step /= sizeof(dst[0]); \
+ \
+ if( 0 <= ip.x && ip.x + win_size.width < src_size.width && \
+ 0 <= ip.y && ip.y + win_size.height < src_size.height ) \
+ { \
+ /* extracted rectangle is totally inside the image */ \
+ src += ip.y * src_step + ip.x; \
+ \
+ if( icvCopySubpix_##flavor##_C1R_p && \
+ icvCopySubpix_##flavor##_C1R_p( src, src_step*sizeof(src[0]), \
+ dst, dst_step*sizeof(dst[0]), \
+ win_size, a, b ) >= 0 ) \
+ return CV_OK; \
+ \
+ for( i = 0; i < win_size.height; i++, src += src_step, \
+ dst += dst_step ) \
+ { \
+ for( j = 0; j <= win_size.width - 2; j += 2 ) \
+ { \
+ worktype s0 = cast_macro(src[j])*a11 + \
+ cast_macro(src[j+1])*a12 + \
+ cast_macro(src[j+src_step])*a21 + \
+ cast_macro(src[j+src_step+1])*a22; \
+ worktype s1 = cast_macro(src[j+1])*a11 + \
+ cast_macro(src[j+2])*a12 + \
+ cast_macro(src[j+src_step+1])*a21 + \
+ cast_macro(src[j+src_step+2])*a22; \
+ \
+ dst[j] = (dsttype)cast_macro2(s0); \
+ dst[j+1] = (dsttype)cast_macro2(s1); \
+ } \
+ \
+ for( ; j < win_size.width; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[j])*a11 + \
+ cast_macro(src[j+1])*a12 + \
+ cast_macro(src[j+src_step])*a21 + \
+ cast_macro(src[j+src_step+1])*a22; \
+ \
+ dst[j] = (dsttype)cast_macro2(s0); \
+ } \
+ } \
+ } \
+ else \
+ { \
+ CvRect r; \
+ \
+ src = (const srctype*)icvAdjustRect( src, src_step*sizeof(*src), \
+ sizeof(*src), src_size, win_size,ip, &r); \
+ \
+ for( i = 0; i < win_size.height; i++, dst += dst_step ) \
+ { \
+ const srctype *src2 = src + src_step; \
+ \
+ if( i < r.y || i >= r.height ) \
+ src2 -= src_step; \
+ \
+ for( j = 0; j < r.x; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[r.x])*b1 + \
+ cast_macro(src2[r.x])*b2; \
+ \
+ dst[j] = (dsttype)cast_macro2(s0); \
+ } \
+ \
+ for( ; j < r.width; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[j])*a11 + \
+ cast_macro(src[j+1])*a12 + \
+ cast_macro(src2[j])*a21 + \
+ cast_macro(src2[j+1])*a22; \
+ \
+ dst[j] = (dsttype)cast_macro2(s0); \
+ } \
+ \
+ for( ; j < win_size.width; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[r.width])*b1 + \
+ cast_macro(src2[r.width])*b2; \
+ \
+ dst[j] = (dsttype)cast_macro2(s0); \
+ } \
+ \
+ if( i < r.height ) \
+ src = src2; \
+ } \
+ } \
+ \
+ return CV_OK; \
+}
+
+
+#define ICV_DEF_GET_RECT_SUB_PIX_FUNC_C3( flavor, srctype, dsttype, worktype, \
+ cast_macro, scale_macro, mul_macro )\
+static CvStatus CV_STDCALL icvGetRectSubPix_##flavor##_C3R \
+( const srctype* src, int src_step, CvSize src_size, \
+ dsttype* dst, int dst_step, CvSize win_size, CvPoint2D32f center ) \
+{ \
+ CvPoint ip; \
+ worktype a, b; \
+ int i, j; \
+ \
+ center.x -= (win_size.width-1)*0.5f; \
+ center.y -= (win_size.height-1)*0.5f; \
+ \
+ ip.x = cvFloor( center.x ); \
+ ip.y = cvFloor( center.y ); \
+ \
+ a = scale_macro( center.x - ip.x ); \
+ b = scale_macro( center.y - ip.y ); \
+ \
+ src_step /= sizeof( src[0] ); \
+ dst_step /= sizeof( dst[0] ); \
+ \
+ if( 0 <= ip.x && ip.x + win_size.width < src_size.width && \
+ 0 <= ip.y && ip.y + win_size.height < src_size.height ) \
+ { \
+ /* extracted rectangle is totally inside the image */ \
+ src += ip.y * src_step + ip.x*3; \
+ \
+ for( i = 0; i < win_size.height; i++, src += src_step, \
+ dst += dst_step ) \
+ { \
+ for( j = 0; j < win_size.width; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[j*3]); \
+ worktype s1 = cast_macro(src[j*3 + src_step]); \
+ s0 += mul_macro( a, (cast_macro(src[j*3+3]) - s0)); \
+ s1 += mul_macro( a, (cast_macro(src[j*3+3+src_step]) - s1));\
+ dst[j*3] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[j*3+1]); \
+ s1 = cast_macro(src[j*3+1 + src_step]); \
+ s0 += mul_macro( a, (cast_macro(src[j*3+4]) - s0)); \
+ s1 += mul_macro( a, (cast_macro(src[j*3+4+src_step]) - s1));\
+ dst[j*3+1] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[j*3+2]); \
+ s1 = cast_macro(src[j*3+2 + src_step]); \
+ s0 += mul_macro( a, (cast_macro(src[j*3+5]) - s0)); \
+ s1 += mul_macro( a, (cast_macro(src[j*3+5+src_step]) - s1));\
+ dst[j*3+2] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ } \
+ } \
+ } \
+ else \
+ { \
+ CvRect r; \
+ \
+ src = (const srctype*)icvAdjustRect( src, src_step*sizeof(*src), \
+ sizeof(*src)*3, src_size, win_size, ip, &r ); \
+ \
+ for( i = 0; i < win_size.height; i++, dst += dst_step ) \
+ { \
+ const srctype *src2 = src + src_step; \
+ \
+ if( i < r.y || i >= r.height ) \
+ src2 -= src_step; \
+ \
+ for( j = 0; j < r.x; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[r.x*3]); \
+ worktype s1 = cast_macro(src2[r.x*3]); \
+ dst[j*3] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[r.x*3+1]); \
+ s1 = cast_macro(src2[r.x*3+1]); \
+ dst[j*3+1] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[r.x*3+2]); \
+ s1 = cast_macro(src2[r.x*3+2]); \
+ dst[j*3+2] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ } \
+ \
+ for( ; j < r.width; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[j*3]); \
+ worktype s1 = cast_macro(src2[j*3]); \
+ s0 += mul_macro( a, (cast_macro(src[j*3 + 3]) - s0)); \
+ s1 += mul_macro( a, (cast_macro(src2[j*3 + 3]) - s1)); \
+ dst[j*3] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[j*3+1]); \
+ s1 = cast_macro(src2[j*3+1]); \
+ s0 += mul_macro( a, (cast_macro(src[j*3 + 4]) - s0)); \
+ s1 += mul_macro( a, (cast_macro(src2[j*3 + 4]) - s1)); \
+ dst[j*3+1] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[j*3+2]); \
+ s1 = cast_macro(src2[j*3+2]); \
+ s0 += mul_macro( a, (cast_macro(src[j*3 + 5]) - s0)); \
+ s1 += mul_macro( a, (cast_macro(src2[j*3 + 5]) - s1)); \
+ dst[j*3+2] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ } \
+ \
+ for( ; j < win_size.width; j++ ) \
+ { \
+ worktype s0 = cast_macro(src[r.width*3]); \
+ worktype s1 = cast_macro(src2[r.width*3]); \
+ dst[j*3] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[r.width*3+1]); \
+ s1 = cast_macro(src2[r.width*3+1]); \
+ dst[j*3+1] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ \
+ s0 = cast_macro(src[r.width*3+2]); \
+ s1 = cast_macro(src2[r.width*3+2]); \
+ dst[j*3+2] = (dsttype)(s0 + mul_macro( b, (s1 - s0))); \
+ } \
+ \
+ if( i < r.height ) \
+ src = src2; \
+ } \
+ } \
+ \
+ return CV_OK; \
+}
+
+
+
+CvStatus CV_STDCALL icvGetRectSubPix_8u32f_C1R
+( const uchar* src, int src_step, CvSize src_size,
+ float* dst, int dst_step, CvSize win_size, CvPoint2D32f center )
+{
+ CvPoint ip;
+ float a12, a22, b1, b2;
+ float a, b;
+ double s = 0;
+ int i, j;
+
+ center.x -= (win_size.width-1)*0.5f;
+ center.y -= (win_size.height-1)*0.5f;
+
+ ip.x = cvFloor( center.x );
+ ip.y = cvFloor( center.y );
+
+ if( win_size.width <= 0 || win_size.height <= 0 )
+ return CV_BADRANGE_ERR;
+
+ a = center.x - ip.x;
+ b = center.y - ip.y;
+ a = MAX(a,0.0001f);
+ a12 = a*(1.f-b);
+ a22 = a*b;
+ b1 = 1.f - b;
+ b2 = b;
+ s = (1. - a)/a;
+
+ src_step /= sizeof(src[0]);
+ dst_step /= sizeof(dst[0]);
+
+ if( 0 <= ip.x && ip.x + win_size.width < src_size.width &&
+ 0 <= ip.y && ip.y + win_size.height < src_size.height )
+ {
+ // extracted rectangle is totally inside the image
+ src += ip.y * src_step + ip.x;
+
+#if 0
+ if( icvCopySubpix_8u32f_C1R_p &&
+ icvCopySubpix_8u32f_C1R_p( src, src_step, dst,
+ dst_step*sizeof(dst[0]), win_size, a, b ) >= 0 )
+ return CV_OK;
+#endif
+
+ for( ; win_size.height--; src += src_step, dst += dst_step )
+ {
+ float prev = (1 - a)*(b1*CV_8TO32F(src[0]) + b2*CV_8TO32F(src[src_step]));
+ for( j = 0; j < win_size.width; j++ )
+ {
+ float t = a12*CV_8TO32F(src[j+1]) + a22*CV_8TO32F(src[j+1+src_step]);
+ dst[j] = prev + t;
+ prev = (float)(t*s);
+ }
+ }
+ }
+ else
+ {
+ CvRect r;
+
+ src = (const uchar*)icvAdjustRect( src, src_step*sizeof(*src),
+ sizeof(*src), src_size, win_size,ip, &r);
+
+ for( i = 0; i < win_size.height; i++, dst += dst_step )
+ {
+ const uchar *src2 = src + src_step;
+
+ if( i < r.y || i >= r.height )
+ src2 -= src_step;
+
+ for( j = 0; j < r.x; j++ )
+ {
+ float s0 = CV_8TO32F(src[r.x])*b1 +
+ CV_8TO32F(src2[r.x])*b2;
+
+ dst[j] = (float)(s0);
+ }
+
+ if( j < r.width )
+ {
+ float prev = (1 - a)*(b1*CV_8TO32F(src[j]) + b2*CV_8TO32F(src2[j]));
+
+ for( ; j < r.width; j++ )
+ {
+ float t = a12*CV_8TO32F(src[j+1]) + a22*CV_8TO32F(src2[j+1]);
+ dst[j] = prev + t;
+ prev = (float)(t*s);
+ }
+ }
+
+ for( ; j < win_size.width; j++ )
+ {
+ float s0 = CV_8TO32F(src[r.width])*b1 +
+ CV_8TO32F(src2[r.width])*b2;
+
+ dst[j] = (float)(s0);
+ }
+
+ if( i < r.height )
+ src = src2;
+ }
+ }
+
+ return CV_OK;
+}
+
+
+
+#define ICV_SHIFT 16
+#define ICV_SCALE(x) cvRound((x)*(1 << ICV_SHIFT))
+#define ICV_MUL_SCALE(x,y) (((x)*(y) + (1 << (ICV_SHIFT-1))) >> ICV_SHIFT)
+#define ICV_DESCALE(x) (((x)+(1 << (ICV_SHIFT-1))) >> ICV_SHIFT)
+
+icvCopySubpix_8u_C1R_t icvCopySubpix_8u_C1R_p = 0;
+icvCopySubpix_8u32f_C1R_t icvCopySubpix_8u32f_C1R_p = 0;
+icvCopySubpix_32f_C1R_t icvCopySubpix_32f_C1R_p = 0;
+
+ICV_DEF_GET_RECT_SUB_PIX_FUNC( 8u, uchar, uchar, int, CV_NOP, ICV_SCALE, ICV_DESCALE )
+//ICV_DEF_GET_RECT_SUB_PIX_FUNC( 8u32f, uchar, float, float, CV_8TO32F, CV_NOP, CV_NOP )
+ICV_DEF_GET_RECT_SUB_PIX_FUNC( 32f, float, float, float, CV_NOP, CV_NOP, CV_NOP )
+
+ICV_DEF_GET_RECT_SUB_PIX_FUNC_C3( 8u, uchar, uchar, int, CV_NOP, ICV_SCALE, ICV_MUL_SCALE )
+ICV_DEF_GET_RECT_SUB_PIX_FUNC_C3( 8u32f, uchar, float, float, CV_8TO32F, CV_NOP, CV_MUL )
+ICV_DEF_GET_RECT_SUB_PIX_FUNC_C3( 32f, float, float, float, CV_NOP, CV_NOP, CV_MUL )
+
+
+#define ICV_DEF_INIT_SUBPIX_TAB( FUNCNAME, FLAG ) \
+static void icvInit##FUNCNAME##FLAG##Table( CvFuncTable* tab ) \
+{ \
+ tab->fn_2d[CV_8U] = (void*)icv##FUNCNAME##_8u_##FLAG; \
+ tab->fn_2d[CV_32F] = (void*)icv##FUNCNAME##_32f_##FLAG; \
+ \
+ tab->fn_2d[1] = (void*)icv##FUNCNAME##_8u32f_##FLAG; \
+}
+
+
+ICV_DEF_INIT_SUBPIX_TAB( GetRectSubPix, C1R )
+ICV_DEF_INIT_SUBPIX_TAB( GetRectSubPix, C3R )
+
+typedef CvStatus (CV_STDCALL *CvGetRectSubPixFunc)( const void* src, int src_step,
+ CvSize src_size, void* dst,
+ int dst_step, CvSize win_size,
+ CvPoint2D32f center );
+
+CV_IMPL void
+cvGetRectSubPix( const void* srcarr, void* dstarr, CvPoint2D32f center )
+{
+ static CvFuncTable gr_tab[2];
+ static int inittab = 0;
+ CV_FUNCNAME( "cvGetRectSubPix" );
+
+ __BEGIN__;
+
+ CvMat srcstub, *src = (CvMat*)srcarr;
+ CvMat dststub, *dst = (CvMat*)dstarr;
+ CvSize src_size, dst_size;
+ CvGetRectSubPixFunc func;
+ int cn, src_step, dst_step;
+
+ if( !inittab )
+ {
+ icvInitGetRectSubPixC1RTable( gr_tab + 0 );
+ icvInitGetRectSubPixC3RTable( gr_tab + 1 );
+ inittab = 1;
+ }
+
+ if( !CV_IS_MAT(src))
+ CV_CALL( src = cvGetMat( src, &srcstub ));
+
+ if( !CV_IS_MAT(dst))
+ CV_CALL( dst = cvGetMat( dst, &dststub ));
+
+ cn = CV_MAT_CN( src->type );
+
+ if( (cn != 1 && cn != 3) || !CV_ARE_CNS_EQ( src, dst ))
+ CV_ERROR( CV_StsUnsupportedFormat, "" );
+
+ src_size = cvGetMatSize( src );
+ dst_size = cvGetMatSize( dst );
+ src_step = src->step ? src->step : CV_STUB_STEP;
+ dst_step = dst->step ? dst->step : CV_STUB_STEP;
+
+ if( dst_size.width > src_size.width || dst_size.height > src_size.height )
+ CV_ERROR( CV_StsBadSize, "destination ROI must be smaller than source ROI" );
+
+ if( CV_ARE_DEPTHS_EQ( src, dst ))
+ {
+ func = (CvGetRectSubPixFunc)(gr_tab[cn != 1].fn_2d[CV_MAT_DEPTH(src->type)]);
+ }
+ else
+ {
+ if( CV_MAT_DEPTH( src->type ) != CV_8U || CV_MAT_DEPTH( dst->type ) != CV_32F )
+ CV_ERROR( CV_StsUnsupportedFormat, "" );
+
+ func = (CvGetRectSubPixFunc)(gr_tab[cn != 1].fn_2d[1]);
+ }
+
+ if( !func )
+ CV_ERROR( CV_StsUnsupportedFormat, "" );
+
+ IPPI_CALL( func( src->data.ptr, src_step, src_size,
+ dst->data.ptr, dst_step, dst_size, center ));
+
+ __END__;
+}
+
+
+#define ICV_32F8U(x) ((uchar)cvRound(x))
+
+#define ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC( flavor, srctype, dsttype, \
+ worktype, cast_macro, cvt ) \
+CvStatus CV_STDCALL \
+icvGetQuadrangleSubPix_##flavor##_C1R \
+( const srctype * src, int src_step, CvSize src_size, \
+ dsttype *dst, int dst_step, CvSize win_size, const float *matrix ) \
+{ \
+ int x, y; \
+ double dx = (win_size.width - 1)*0.5; \
+ double dy = (win_size.height - 1)*0.5; \
+ double A11 = matrix[0], A12 = matrix[1], A13 = matrix[2]-A11*dx-A12*dy; \
+ double A21 = matrix[3], A22 = matrix[4], A23 = matrix[5]-A21*dx-A22*dy; \
+ \
+ src_step /= sizeof(srctype); \
+ dst_step /= sizeof(dsttype); \
+ \
+ for( y = 0; y < win_size.height; y++, dst += dst_step ) \
+ { \
+ double xs = A12*y + A13; \
+ double ys = A22*y + A23; \
+ double xe = A11*(win_size.width-1) + A12*y + A13; \
+ double ye = A21*(win_size.width-1) + A22*y + A23; \
+ \
+ if( (unsigned)(cvFloor(xs)-1) < (unsigned)(src_size.width - 3) && \
+ (unsigned)(cvFloor(ys)-1) < (unsigned)(src_size.height - 3) && \
+ (unsigned)(cvFloor(xe)-1) < (unsigned)(src_size.width - 3) && \
+ (unsigned)(cvFloor(ye)-1) < (unsigned)(src_size.height - 3)) \
+ { \
+ for( x = 0; x < win_size.width; x++ ) \
+ { \
+ int ixs = cvFloor( xs ); \
+ int iys = cvFloor( ys ); \
+ const srctype *ptr = src + src_step*iys + ixs; \
+ double a = xs - ixs, b = ys - iys, a1 = 1.f - a; \
+ worktype p0 = cvt(ptr[0])*a1 + cvt(ptr[1])*a; \
+ worktype p1 = cvt(ptr[src_step])*a1 + cvt(ptr[src_step+1])*a;\
+ xs += A11; \
+ ys += A21; \
+ \
+ dst[x] = cast_macro(p0 + b * (p1 - p0)); \
+ } \
+ } \
+ else \
+ { \
+ for( x = 0; x < win_size.width; x++ ) \
+ { \
+ int ixs = cvFloor( xs ), iys = cvFloor( ys ); \
+ double a = xs - ixs, b = ys - iys, a1 = 1.f - a; \
+ const srctype *ptr0, *ptr1; \
+ worktype p0, p1; \
+ xs += A11; ys += A21; \
+ \
+ if( (unsigned)iys < (unsigned)(src_size.height-1) ) \
+ ptr0 = src + src_step*iys, ptr1 = ptr0 + src_step; \
+ else \
+ ptr0 = ptr1 = src + (iys < 0 ? 0 : src_size.height-1)*src_step; \
+ \
+ if( (unsigned)ixs < (unsigned)(src_size.width-1) ) \
+ { \
+ p0 = cvt(ptr0[ixs])*a1 + cvt(ptr0[ixs+1])*a; \
+ p1 = cvt(ptr1[ixs])*a1 + cvt(ptr1[ixs+1])*a; \
+ } \
+ else \
+ { \
+ ixs = ixs < 0 ? 0 : src_size.width - 1; \
+ p0 = cvt(ptr0[ixs]); p1 = cvt(ptr1[ixs]); \
+ } \
+ dst[x] = cast_macro(p0 + b * (p1 - p0)); \
+ } \
+ } \
+ } \
+ \
+ return CV_OK; \
+}
+
+
+#define ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC_C3( flavor, srctype, dsttype, \
+ worktype, cast_macro, cvt ) \
+static CvStatus CV_STDCALL \
+icvGetQuadrangleSubPix_##flavor##_C3R \
+( const srctype * src, int src_step, CvSize src_size, \
+ dsttype *dst, int dst_step, CvSize win_size, const float *matrix ) \
+{ \
+ int x, y; \
+ double dx = (win_size.width - 1)*0.5; \
+ double dy = (win_size.height - 1)*0.5; \
+ double A11 = matrix[0], A12 = matrix[1], A13 = matrix[2]-A11*dx-A12*dy; \
+ double A21 = matrix[3], A22 = matrix[4], A23 = matrix[5]-A21*dx-A22*dy; \
+ \
+ src_step /= sizeof(srctype); \
+ dst_step /= sizeof(dsttype); \
+ \
+ for( y = 0; y < win_size.height; y++, dst += dst_step ) \
+ { \
+ double xs = A12*y + A13; \
+ double ys = A22*y + A23; \
+ double xe = A11*(win_size.width-1) + A12*y + A13; \
+ double ye = A21*(win_size.width-1) + A22*y + A23; \
+ \
+ if( (unsigned)(cvFloor(xs)-1) < (unsigned)(src_size.width - 3) && \
+ (unsigned)(cvFloor(ys)-1) < (unsigned)(src_size.height - 3) && \
+ (unsigned)(cvFloor(xe)-1) < (unsigned)(src_size.width - 3) && \
+ (unsigned)(cvFloor(ye)-1) < (unsigned)(src_size.height - 3)) \
+ { \
+ for( x = 0; x < win_size.width; x++ ) \
+ { \
+ int ixs = cvFloor( xs ); \
+ int iys = cvFloor( ys ); \
+ const srctype *ptr = src + src_step*iys + ixs*3; \
+ double a = xs - ixs, b = ys - iys, a1 = 1.f - a; \
+ worktype p0, p1; \
+ xs += A11; \
+ ys += A21; \
+ \
+ p0 = cvt(ptr[0])*a1 + cvt(ptr[3])*a; \
+ p1 = cvt(ptr[src_step])*a1 + cvt(ptr[src_step+3])*a; \
+ dst[x*3] = cast_macro(p0 + b * (p1 - p0)); \
+ \
+ p0 = cvt(ptr[1])*a1 + cvt(ptr[4])*a; \
+ p1 = cvt(ptr[src_step+1])*a1 + cvt(ptr[src_step+4])*a; \
+ dst[x*3+1] = cast_macro(p0 + b * (p1 - p0)); \
+ \
+ p0 = cvt(ptr[2])*a1 + cvt(ptr[5])*a; \
+ p1 = cvt(ptr[src_step+2])*a1 + cvt(ptr[src_step+5])*a; \
+ dst[x*3+2] = cast_macro(p0 + b * (p1 - p0)); \
+ } \
+ } \
+ else \
+ { \
+ for( x = 0; x < win_size.width; x++ ) \
+ { \
+ int ixs = cvFloor(xs), iys = cvFloor(ys); \
+ double a = xs - ixs, b = ys - iys; \
+ const srctype *ptr0, *ptr1; \
+ xs += A11; ys += A21; \
+ \
+ if( (unsigned)iys < (unsigned)(src_size.height-1) ) \
+ ptr0 = src + src_step*iys, ptr1 = ptr0 + src_step; \
+ else \
+ ptr0 = ptr1 = src + (iys < 0 ? 0 : src_size.height-1)*src_step; \
+ \
+ if( (unsigned)ixs < (unsigned)(src_size.width - 1) ) \
+ { \
+ double a1 = 1.f - a; \
+ worktype p0, p1; \
+ ptr0 += ixs*3; ptr1 += ixs*3; \
+ p0 = cvt(ptr0[0])*a1 + cvt(ptr0[3])*a; \
+ p1 = cvt(ptr1[0])*a1 + cvt(ptr1[3])*a; \
+ dst[x*3] = cast_macro(p0 + b * (p1 - p0)); \
+ \
+ p0 = cvt(ptr0[1])*a1 + cvt(ptr0[4])*a; \
+ p1 = cvt(ptr1[1])*a1 + cvt(ptr1[4])*a; \
+ dst[x*3+1] = cast_macro(p0 + b * (p1 - p0)); \
+ \
+ p0 = cvt(ptr0[2])*a1 + cvt(ptr0[5])*a; \
+ p1 = cvt(ptr1[2])*a1 + cvt(ptr1[5])*a; \
+ dst[x*3+2] = cast_macro(p0 + b * (p1 - p0)); \
+ } \
+ else \
+ { \
+ double b1 = 1.f - b; \
+ ixs = ixs < 0 ? 0 : src_size.width - 1; \
+ ptr0 += ixs*3; ptr1 += ixs*3; \
+ \
+ dst[x*3] = cast_macro(cvt(ptr0[0])*b1 + cvt(ptr1[0])*b);\
+ dst[x*3+1]=cast_macro(cvt(ptr0[1])*b1 + cvt(ptr1[1])*b);\
+ dst[x*3+2]=cast_macro(cvt(ptr0[2])*b1 + cvt(ptr1[2])*b);\
+ } \
+ } \
+ } \
+ } \
+ \
+ return CV_OK; \
+}
+
+
+/*#define srctype uchar
+#define dsttype uchar
+#define worktype float
+#define cvt CV_8TO32F
+#define cast_macro ICV_32F8U
+
+#undef srctype
+#undef dsttype
+#undef worktype
+#undef cvt
+#undef cast_macro*/
+
+ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC( 8u, uchar, uchar, double, ICV_32F8U, CV_8TO32F )
+ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC( 32f, float, float, double, CV_CAST_32F, CV_NOP )
+ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC( 8u32f, uchar, float, double, CV_CAST_32F, CV_8TO32F )
+
+ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC_C3( 8u, uchar, uchar, double, ICV_32F8U, CV_8TO32F )
+ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC_C3( 32f, float, float, double, CV_CAST_32F, CV_NOP )
+ICV_DEF_GET_QUADRANGLE_SUB_PIX_FUNC_C3( 8u32f, uchar, float, double, CV_CAST_32F, CV_8TO32F )
+
+ICV_DEF_INIT_SUBPIX_TAB( GetQuadrangleSubPix, C1R )
+ICV_DEF_INIT_SUBPIX_TAB( GetQuadrangleSubPix, C3R )
+
+typedef CvStatus (CV_STDCALL *CvGetQuadrangleSubPixFunc)(
+ const void* src, int src_step,
+ CvSize src_size, void* dst,
+ int dst_step, CvSize win_size,
+ const float* matrix );
+
+CV_IMPL void
+cvGetQuadrangleSubPix( const void* srcarr, void* dstarr, const CvMat* mat )
+{
+ static CvFuncTable gq_tab[2];
+ static int inittab = 0;
+ CV_FUNCNAME( "cvGetQuadrangleSubPix" );
+
+ __BEGIN__;
+
+ CvMat srcstub, *src = (CvMat*)srcarr;
+ CvMat dststub, *dst = (CvMat*)dstarr;
+ CvSize src_size, dst_size;
+ CvGetQuadrangleSubPixFunc func;
+ float m[6];
+ int k, cn;
+
+ if( !inittab )
+ {
+ icvInitGetQuadrangleSubPixC1RTable( gq_tab + 0 );
+ icvInitGetQuadrangleSubPixC3RTable( gq_tab + 1 );
+ inittab = 1;
+ }
+
+ if( !CV_IS_MAT(src))
+ CV_CALL( src = cvGetMat( src, &srcstub ));
+
+ if( !CV_IS_MAT(dst))
+ CV_CALL( dst = cvGetMat( dst, &dststub ));
+
+ if( !CV_IS_MAT(mat))
+ CV_ERROR( CV_StsBadArg, "map matrix is not valid" );
+
+ cn = CV_MAT_CN( src->type );
+
+ if( (cn != 1 && cn != 3) || !CV_ARE_CNS_EQ( src, dst ))
+ CV_ERROR( CV_StsUnsupportedFormat, "" );
+
+ src_size = cvGetMatSize( src );
+ dst_size = cvGetMatSize( dst );
+
+ /*if( dst_size.width > src_size.width || dst_size.height > src_size.height )
+ CV_ERROR( CV_StsBadSize, "destination ROI must not be larger than source ROI" );*/
+
+ if( mat->rows != 2 || mat->cols != 3 )
+ CV_ERROR( CV_StsBadArg,
+ "Transformation matrix must be 2x3" );
+
+ if( CV_MAT_TYPE( mat->type ) == CV_32FC1 )
+ {
+ for( k = 0; k < 3; k++ )
+ {
+ m[k] = mat->data.fl[k];
+ m[3 + k] = ((float*)(mat->data.ptr + mat->step))[k];
+ }
+ }
+ else if( CV_MAT_TYPE( mat->type ) == CV_64FC1 )
+ {
+ for( k = 0; k < 3; k++ )
+ {
+ m[k] = (float)mat->data.db[k];
+ m[3 + k] = (float)((double*)(mat->data.ptr + mat->step))[k];
+ }
+ }
+ else
+ CV_ERROR( CV_StsUnsupportedFormat,
+ "The transformation matrix should have 32fC1 or 64fC1 type" );
+
+ if( CV_ARE_DEPTHS_EQ( src, dst ))
+ {
+ func = (CvGetQuadrangleSubPixFunc)(gq_tab[cn != 1].fn_2d[CV_MAT_DEPTH(src->type)]);
+ }
+ else
+ {
+ if( CV_MAT_DEPTH( src->type ) != CV_8U || CV_MAT_DEPTH( dst->type ) != CV_32F )
+ CV_ERROR( CV_StsUnsupportedFormat, "" );
+
+ func = (CvGetQuadrangleSubPixFunc)(gq_tab[cn != 1].fn_2d[1]);
+ }
+
+ if( !func )
+ CV_ERROR( CV_StsUnsupportedFormat, "" );
+
+ IPPI_CALL( func( src->data.ptr, src->step, src_size,
+ dst->data.ptr, dst->step, dst_size, m ));
+
+ __END__;
+}
+
+
+/* End of file. */
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