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#! /usr/bin/env python
"""
This script extracts macros functions from the OpenCV headers and attempts to generate
standard C function prototypes. Type information is missing in the macros, so SWIG
cannot generate C code for them unless we provide this.
"""
import sys, re
ARG_MAP = {
"mat":"CvMat*",
"type":"int",
"flags":"int",
"img":"CvArr *",
"image":"IplImage *",
"mat1":"CvMat*",
"mat2":"CvMat*",
"seq":"CvSeq*",
"elem_ptr":"void *",
"elem":"CvPoint",
"elem_type":"ignore",
"elemtype":"ignore",
"elem_size":"int",
"edge":"CvGraphEdge *",
"vertex":"CvGraphVtx *",
"contour":"CvSeq *",
"vtx":"CvGraphVtx *",
"reader":"CvSeqReader",
"writer":"CvSeqWriter",
"hist":"CvHistogram *",
"ptr":"void *",
"arr":"CvArr *",
"header":"CvMat *",
"src":"CvArr *",
"src1":"CvArr *",
"src2":"CvArr *",
"src3":"CvArr *",
"dst":"CvArr *",
"pt1":"CvPoint",
"pt2":"CvPoint",
"_pt":"CvPoint",
"index":"int",
"idx":"int",
"set":"CvSet *",
"n":"int",
"a":"int",
"b":"int",
"t":"int",
"value":"double",
"row":"int",
"col":"int",
"cn":"int",
"new_cn":"int",
"pix_size":"int",
"depth":"int",
"node":"CvSparseNode *",
"storage":"CvMemStorage *",
"new_dims": "int",
"new_sizes": "int *",
"A":"CvArr *",
"B":"CvArr *",
"C":"CvArr *",
"real_scalar":"double",
"graph":"CvGraph *",
"r":"double",
"g":"double",
# "b":"double",
"line_iterator":"CvLineIterator",
"deltas":"double *",
"step":"int",
"haar":"void *",
# "contour":"const void*", # handled as a special case in cvshadow
"range":"CvSize",
"nch":"int",
"method":"int",
"factor":"double"
}
RET_MAP = {
"cvContourPerimeter":"double",
"CV_RGB":"CvScalar",
"CV_NEXT_GRAPH_EDGE":"CvGraphEdge *",
"CV_IMIN":"int",
"CV_IMAX":"int",
"CV_IABS":"int",
"CV_MAT_CN":"int",
"CV_MAT_DEPTH":"int",
"CV_NEXT_LINE_POINT":"void",
}
# special cases
MACROS = {
#"CV_MAKETYPE":"", # SWIG 1.3.29 doesn't like this one for some indeterminant reason
"CV_TURN_ON_IPL_COMPATIBILITY":"",
"CV_MAT_ELEM_PTR_FAST":"void * CV_MAT_ELEM_PTR_FAST(CvMat mat,int row,int col,int pix_size);",
"CV_MAT_ELEM_PTR":"void * CV_MAT_ELEM_PTR(CvMat mat,int row,int col);",
"CV_NODE_VAL":"void * CV_NODE_VAL(CvSparseMat* mat,CvSparseNode * node);",
"CV_NODE_IDX":"int * CV_NODE_IDX(CvSparseMat* mat,CvSparseNode * node);",
"CV_READ_CHAIN_POINT":"void CV_READ_CHAIN_POINT(CvPoint _pt, CvChainPtReader reader);",
"CV_SUBDIV2D_NEXT_EDGE":"CvQuadEdge2D* CV_SUBDIV2D_NEXT_EDGE(CvSubdiv2DEdge edge);",
"cvFree":"void cvFree(void ** ptr);",
}
print """
/*//////////////////////////////////////////////////////////////////////////////////////////////////
// This file is automatically generated from the extract_macros.py script found in the 'utils'
// subdirectory of the OpenCV distribution. If the generated function prototypes are missing or
// incorrect, it is likely that a name->type mapping will have to be added to the script
/////////////////////////////////////////////////////////////////////////////////////////////////M*/
"""
print "// This file was generated from the following header files: "
print "// %s" % "\n// ".join(sys.argv[1:])
def determine_return_type(name, arguments):
if RET_MAP.has_key( name ):
return RET_MAP[name]
if name.find("_IS_")>=0 or \
name.find("_HAS_")>=0 or \
name.find("_KIND")>=0 or \
name.find("_ARE_")>=0 or \
name.find("_SIZE")>=0 or \
name.find("Idx")>=0 or \
name.find("Count")>=0 or \
(name.find("TYPE")>=0 and not name.find("TYPES")>=0):
return "int"
if re.match( r"CV_(?:8|16|32|64)(?:U|S|F)C", name ):
return "int"
if len(arguments) is 1 and arguments[0].startswith("double"):
return "double"
if name.find("_PTR")>=0:
return "void *"
if name.endswith("POINT"):
return "CvPoint"
return "void"
for m in MACROS:
print MACROS[m]
for fn in sys.argv[1:]:
f = open( fn, "r" )
in_define = False
fstr=""
macro_name=""
for l in f.xreadlines():
m = re.match( r"^#define\s+((?:CV_|IPL_|cv)\w+)\s*\(([_, a-zA-Z0-9]*)\)\s*(.*)", l )
if m and not m.group(1).endswith("FIELDS") and not MACROS.has_key(m.group(1)):
macro_name = m.group(1)
args = m.group(2).strip().split(",")
# assign return type
ret=determine_return_type( macro_name, args )
# assign type to each argument
no_args = len(args) is 0
typed_args = []
ignore = False
for arg in args:
arg = arg.strip()
if len(arg) is 0:
no_args = True
break
if ARG_MAP.has_key( arg ):
if ARG_MAP[arg] is "ignore":
ignore=True
break
typed_args.append( "%s %s"%( ARG_MAP[arg], arg ) )
else:
sys.stderr.write( "\"%s\":\"?\", in macro '%s'\n" % (arg, macro_name) )
typed_args = []
break
if not ignore and (no_args or len(typed_args)>0):
decl = "%s %s(%s);" % (ret, macro_name, ",".join( typed_args) )
MACROS[ macro_name ] = decl
print decl
f.close()