#!/usr/bin/env python import sys, re, os.path import json import logging from pprint import pformat from string import Template if sys.version_info[0] >= 3: from io import StringIO else: from cStringIO import StringIO # list of class names, which should be skipped by wrapper generator # the list is loaded from misc/java/gen_dict.json defined for the module and its dependencies class_ignore_list = [] # list of constant names, which should be skipped by wrapper generator # ignored constants can be defined using regular expressions const_ignore_list = [] # list of private constants const_private_list = [] # { Module : { public : [[name, val],...], private : [[]...] } } missing_consts = {} # c_type : { java/jni correspondence } # Complex data types are configured for each module using misc/java/gen_dict.json type_dict = { # "simple" : { j_type : "?", jn_type : "?", jni_type : "?", suffix : "?" }, "" : { "j_type" : "", "jn_type" : "long", "jni_type" : "jlong" }, # c-tor ret_type "void" : { "j_type" : "void", "jn_type" : "void", "jni_type" : "void" }, "env" : { "j_type" : "", "jn_type" : "", "jni_type" : "JNIEnv*"}, "cls" : { "j_type" : "", "jn_type" : "", "jni_type" : "jclass"}, "bool" : { "j_type" : "boolean", "jn_type" : "boolean", "jni_type" : "jboolean", "suffix" : "Z" }, "char" : { "j_type" : "char", "jn_type" : "char", "jni_type" : "jchar", "suffix" : "C" }, "int" : { "j_type" : "int", "jn_type" : "int", "jni_type" : "jint", "suffix" : "I" }, "long" : { "j_type" : "int", "jn_type" : "int", "jni_type" : "jint", "suffix" : "I" }, "float" : { "j_type" : "float", "jn_type" : "float", "jni_type" : "jfloat", "suffix" : "F" }, "double" : { "j_type" : "double", "jn_type" : "double", "jni_type" : "jdouble", "suffix" : "D" }, "size_t" : { "j_type" : "long", "jn_type" : "long", "jni_type" : "jlong", "suffix" : "J" }, "__int64" : { "j_type" : "long", "jn_type" : "long", "jni_type" : "jlong", "suffix" : "J" }, "int64" : { "j_type" : "long", "jn_type" : "long", "jni_type" : "jlong", "suffix" : "J" }, "double[]": { "j_type" : "double[]", "jn_type" : "double[]", "jni_type" : "jdoubleArray", "suffix" : "_3D" } } # { class : { func : {j_code, jn_code, cpp_code} } } ManualFuncs = {} # { class : { func : { arg_name : {"ctype" : ctype, "attrib" : [attrib]} } } } func_arg_fix = {} def getLibVersion(version_hpp_path): version_file = open(version_hpp_path, "rt").read() major = re.search("^W*#\W*define\W+CV_VERSION_MAJOR\W+(\d+)\W*$", version_file, re.MULTILINE).group(1) minor = re.search("^W*#\W*define\W+CV_VERSION_MINOR\W+(\d+)\W*$", version_file, re.MULTILINE).group(1) revision = re.search("^W*#\W*define\W+CV_VERSION_REVISION\W+(\d+)\W*$", version_file, re.MULTILINE).group(1) status = re.search("^W*#\W*define\W+CV_VERSION_STATUS\W+\"(.*?)\"\W*$", version_file, re.MULTILINE).group(1) return (major, minor, revision, status) def libVersionBlock(): (major, minor, revision, status) = getLibVersion( (os.path.dirname(__file__) or '.') + '/../../core/include/opencv2/core/version.hpp') version_str = '.'.join( (major, minor, revision) ) + status version_suffix = ''.join( (major, minor, revision) ) return """ // these constants are wrapped inside functions to prevent inlining private static String getVersion() { return "%(v)s"; } private static String getNativeLibraryName() { return "opencv_java%(vs)s"; } private static int getVersionMajor() { return %(ma)s; } private static int getVersionMinor() { return %(mi)s; } private static int getVersionRevision() { return %(re)s; } private static String getVersionStatus() { return "%(st)s"; } public static final String VERSION = getVersion(); public static final String NATIVE_LIBRARY_NAME = getNativeLibraryName(); public static final int VERSION_MAJOR = getVersionMajor(); public static final int VERSION_MINOR = getVersionMinor(); public static final int VERSION_REVISION = getVersionRevision(); public static final String VERSION_STATUS = getVersionStatus(); """ % { 'v' : version_str, 'vs' : version_suffix, 'ma' : major, 'mi' : minor, 're' : revision, 'st': status } T_JAVA_START_INHERITED = """ // // This file is auto-generated. Please don't modify it! // package org.opencv.$module; $imports $docs $annotation public class $jname extends $base { protected $jname(long addr) { super(addr); } """ T_JAVA_START_ORPHAN = """ // // This file is auto-generated. Please don't modify it! // package org.opencv.$module; $imports $docs $annotation public class $jname { protected final long nativeObj; protected $jname(long addr) { nativeObj = addr; } public long getNativeObjAddr() { return nativeObj; } """ T_JAVA_START_MODULE = """ // // This file is auto-generated. Please don't modify it! // package org.opencv.$module; $imports $docs $annotation public class $jname { """ T_CPP_MODULE = """ // // This file is auto-generated, please don't edit! // #define LOG_TAG "org.opencv.$m" #include "common.h" #include "opencv2/opencv_modules.hpp" #ifdef HAVE_OPENCV_$M #include #include "opencv2/$m.hpp" $includes using namespace cv; /// throw java exception static void throwJavaException(JNIEnv *env, const std::exception *e, const char *method) { std::string what = "unknown exception"; jclass je = 0; if(e) { std::string exception_type = "std::exception"; if(dynamic_cast(e)) { exception_type = "cv::Exception"; je = env->FindClass("org/opencv/core/CvException"); } what = exception_type + ": " + e->what(); } if(!je) je = env->FindClass("java/lang/Exception"); env->ThrowNew(je, what.c_str()); LOGE("%s caught %s", method, what.c_str()); (void)method; // avoid "unused" warning } extern "C" { $code } // extern "C" #endif // HAVE_OPENCV_$M """ class GeneralInfo(): def __init__(self, type, decl, namespaces): self.namespace, self.classpath, self.classname, self.name = self.parseName(decl[0], namespaces) # parse doxygen comments self.params={} self.annotation=[] if type == "class": docstring="// C++: class " + self.name + "\n//javadoc: " + self.name else: docstring="" if len(decl)>5 and decl[5]: logging.info('docstring: %s', decl[5]) if re.search("(@|\\\\)deprecated", decl[5]): self.annotation.append("@Deprecated") self.docstring = docstring def parseName(self, name, namespaces): ''' input: full name and available namespaces returns: (namespace, classpath, classname, name) ''' name = name[name.find(" ")+1:].strip() # remove struct/class/const prefix spaceName = "" localName = name # . for namespace in sorted(namespaces, key=len, reverse=True): if name.startswith(namespace + "."): spaceName = namespace localName = name.replace(namespace + ".", "") break pieces = localName.split(".") if len(pieces) > 2: # ... return spaceName, ".".join(pieces[:-1]), pieces[-2], pieces[-1] elif len(pieces) == 2: # . return spaceName, pieces[0], pieces[0], pieces[1] elif len(pieces) == 1: # return spaceName, "", "", pieces[0] else: return spaceName, "", "" # error?! def fullName(self, isCPP=False): result = ".".join([self.fullClass(), self.name]) return result if not isCPP else result.replace(".", "::") def fullClass(self, isCPP=False): result = ".".join([f for f in [self.namespace] + self.classpath.split(".") if len(f)>0]) return result if not isCPP else result.replace(".", "::") class ConstInfo(GeneralInfo): def __init__(self, decl, addedManually=False, namespaces=[]): GeneralInfo.__init__(self, "const", decl, namespaces) self.cname = self.name.replace(".", "::") self.value = decl[1] self.addedManually = addedManually def __repr__(self): return Template("CONST $name=$value$manual").substitute(name=self.name, value=self.value, manual="(manual)" if self.addedManually else "") def isIgnored(self): for c in const_ignore_list: if re.match(c, self.name): return True return False class ClassPropInfo(): def __init__(self, decl): # [f_ctype, f_name, '', '/RW'] self.ctype = decl[0] self.name = decl[1] self.rw = "/RW" in decl[3] def __repr__(self): return Template("PROP $ctype $name").substitute(ctype=self.ctype, name=self.name) class ClassInfo(GeneralInfo): def __init__(self, decl, namespaces=[]): # [ 'class/struct cname', ': base', [modlist] ] GeneralInfo.__init__(self, "class", decl, namespaces) self.cname = self.name.replace(".", "::") self.methods = [] self.methods_suffixes = {} self.consts = [] # using a list to save the occurence order self.private_consts = [] self.imports = set() self.props= [] self.jname = self.name self.smart = None # True if class stores Ptr* instead of T* in nativeObj field self.j_code = None # java code stream self.jn_code = None # jni code stream self.cpp_code = None # cpp code stream for m in decl[2]: if m.startswith("="): self.jname = m[1:] self.base = '' if decl[1]: #self.base = re.sub(r"\b"+self.jname+r"\b", "", decl[1].replace(":", "")).strip() self.base = re.sub(r"^.*:", "", decl[1].split(",")[0]).strip().replace(self.jname, "") def __repr__(self): return Template("CLASS $namespace::$classpath.$name : $base").substitute(**self.__dict__) def getAllImports(self, module): return ["import %s;" % c for c in sorted(self.imports) if not c.startswith('org.opencv.'+module)] def addImports(self, ctype): if ctype in type_dict: if "j_import" in type_dict[ctype]: self.imports.add(type_dict[ctype]["j_import"]) if "v_type" in type_dict[ctype]: self.imports.add("java.util.List") self.imports.add("java.util.ArrayList") self.imports.add("org.opencv.utils.Converters") if type_dict[ctype]["v_type"] in ("Mat", "vector_Mat"): self.imports.add("org.opencv.core.Mat") def getAllMethods(self): result = [] result.extend([fi for fi in sorted(self.methods) if fi.isconstructor]) result.extend([fi for fi in sorted(self.methods) if not fi.isconstructor]) return result def addMethod(self, fi): self.methods.append(fi) def getConst(self, name): for cand in self.consts + self.private_consts: if cand.name == name: return cand return None def addConst(self, constinfo): # choose right list (public or private) consts = self.consts for c in const_private_list: if re.match(c, constinfo.name): consts = self.private_consts break consts.append(constinfo) def initCodeStreams(self, Module): self.j_code = StringIO() self.jn_code = StringIO() self.cpp_code = StringIO(); if self.base: self.j_code.write(T_JAVA_START_INHERITED) else: if self.name != Module: self.j_code.write(T_JAVA_START_ORPHAN) else: self.j_code.write(T_JAVA_START_MODULE) # misc handling if self.name == 'Core': self.imports.add("java.lang.String") self.j_code.write(libVersionBlock()) def cleanupCodeStreams(self): self.j_code.close() self.jn_code.close() self.cpp_code.close() def generateJavaCode(self, m, M): return Template(self.j_code.getvalue() + "\n\n" + \ self.jn_code.getvalue() + "\n}\n").substitute(\ module = m, name = self.name, jname = self.jname, imports = "\n".join(self.getAllImports(M)), docs = self.docstring, annotation = "\n".join(self.annotation), base = self.base) def generateCppCode(self): return self.cpp_code.getvalue() class ArgInfo(): def __init__(self, arg_tuple): # [ ctype, name, def val, [mod], argno ] self.pointer = False ctype = arg_tuple[0] if ctype.endswith("*"): ctype = ctype[:-1] self.pointer = True self.ctype = ctype self.name = arg_tuple[1] self.defval = arg_tuple[2] self.out = "" if "/O" in arg_tuple[3]: self.out = "O" if "/IO" in arg_tuple[3]: self.out = "IO" def __repr__(self): return Template("ARG $ctype$p $name=$defval").substitute(ctype=self.ctype, p=" *" if self.pointer else "", name=self.name, defval=self.defval) class FuncInfo(GeneralInfo): def __init__(self, decl, namespaces=[]): # [ funcname, return_ctype, [modifiers], [args] ] GeneralInfo.__init__(self, "func", decl, namespaces) self.cname = self.name.replace(".", "::") self.jname = self.name self.isconstructor = self.name == self.classname if "[" in self.name: self.jname = "getelem" for m in decl[2]: if m.startswith("="): self.jname = m[1:] self.static = ["","static"][ "/S" in decl[2] ] self.ctype = re.sub(r"^CvTermCriteria", "TermCriteria", decl[1] or "") self.args = [] func_fix_map = func_arg_fix.get(self.jname, {}) for a in decl[3]: arg = a[:] arg_fix_map = func_fix_map.get(arg[1], {}) arg[0] = arg_fix_map.get('ctype', arg[0]) #fixing arg type arg[3] = arg_fix_map.get('attrib', arg[3]) #fixing arg attrib self.args.append(ArgInfo(arg)) def __repr__(self): return Template("FUNC <$ctype $namespace.$classpath.$name $args>").substitute(**self.__dict__) def __lt__(self, other): return self.__repr__() < other.__repr__() class JavaWrapperGenerator(object): def __init__(self): self.clear() def clear(self): self.namespaces = set(["cv"]) self.classes = { "Mat" : ClassInfo([ 'class Mat', '', [], [] ], self.namespaces) } self.module = "" self.Module = "" self.ported_func_list = [] self.skipped_func_list = [] self.def_args_hist = {} # { def_args_cnt : funcs_cnt } def add_class(self, decl): classinfo = ClassInfo(decl, namespaces=self.namespaces) if classinfo.name in class_ignore_list: logging.info('ignored: %s', classinfo) return name = classinfo.name if self.isWrapped(name) and not classinfo.base: logging.warning('duplicated: %s', classinfo) return self.classes[name] = classinfo if name in type_dict and not classinfo.base: logging.warning('duplicated: %s', classinfo) return type_dict[name] = \ { "j_type" : classinfo.jname, "jn_type" : "long", "jn_args" : (("__int64", ".nativeObj"),), "jni_name" : "(*("+classinfo.fullName(isCPP=True)+"*)%(n)s_nativeObj)", "jni_type" : "jlong", "suffix" : "J" } type_dict[name+'*'] = \ { "j_type" : classinfo.jname, "jn_type" : "long", "jn_args" : (("__int64", ".nativeObj"),), "jni_name" : "("+classinfo.fullName(isCPP=True)+"*)%(n)s_nativeObj", "jni_type" : "jlong", "suffix" : "J" } # missing_consts { Module : { public : [[name, val],...], private : [[]...] } } if name in missing_consts: if 'private' in missing_consts[name]: for (n, val) in missing_consts[name]['private']: classinfo.private_consts.append( ConstInfo([n, val], addedManually=True) ) if 'public' in missing_consts[name]: for (n, val) in missing_consts[name]['public']: classinfo.consts.append( ConstInfo([n, val], addedManually=True) ) # class props for p in decl[3]: if True: #"vector" not in p[0]: classinfo.props.append( ClassPropInfo(p) ) else: logging.warning("Skipped property: [%s]" % name, p) if classinfo.base: classinfo.addImports(classinfo.base) type_dict["Ptr_"+name] = \ { "j_type" : classinfo.jname, "jn_type" : "long", "jn_args" : (("__int64", ".getNativeObjAddr()"),), "jni_name" : "*((Ptr<"+classinfo.fullName(isCPP=True)+">*)%(n)s_nativeObj)", "jni_type" : "jlong", "suffix" : "J" } logging.info('ok: class %s, name: %s, base: %s', classinfo, name, classinfo.base) def add_const(self, decl): # [ "const cname", val, [], [] ] constinfo = ConstInfo(decl, namespaces=self.namespaces) if constinfo.isIgnored(): logging.info('ignored: %s', constinfo) elif not self.isWrapped(constinfo.classname): logging.info('class not found: %s', constinfo) else: ci = self.getClass(constinfo.classname) duplicate = ci.getConst(constinfo.name) if duplicate: if duplicate.addedManually: logging.info('manual: %s', constinfo) else: logging.warning('duplicated: %s', constinfo) else: ci.addConst(constinfo) logging.info('ok: %s', constinfo) def add_func(self, decl): fi = FuncInfo(decl, namespaces=self.namespaces) classname = fi.classname or self.Module if classname in class_ignore_list: logging.info('ignored: %s', fi) elif classname in ManualFuncs and fi.jname in ManualFuncs[classname]: logging.info('manual: %s', fi) elif not self.isWrapped(classname): logging.warning('not found: %s', fi) else: self.getClass(classname).addMethod(fi) logging.info('ok: %s', fi) # calc args with def val cnt = len([a for a in fi.args if a.defval]) self.def_args_hist[cnt] = self.def_args_hist.get(cnt, 0) + 1 def save(self, path, buf): f = open(path, "wt") f.write(buf) f.close() def gen(self, srcfiles, module, output_path, common_headers): self.clear() self.module = module self.Module = module.capitalize() # TODO: support UMat versions of declarations (implement UMat-wrapper for Java) parser = hdr_parser.CppHeaderParser(generate_umat_decls=False) self.add_class( ['class ' + self.Module, '', [], []] ) # [ 'class/struct cname', ':bases', [modlist] [props] ] # scan the headers and build more descriptive maps of classes, consts, functions includes = []; for hdr in common_headers: logging.info("\n===== Common header : %s =====", hdr) includes.append('#include "' + hdr + '"') for hdr in srcfiles: decls = parser.parse(hdr) self.namespaces = parser.namespaces logging.info("\n\n===== Header: %s =====", hdr) logging.info("Namespaces: %s", parser.namespaces) if decls: includes.append('#include "' + hdr + '"') else: logging.info("Ignore header: %s", hdr) for decl in decls: logging.info("\n--- Incoming ---\n%s", pformat(decl, 4)) name = decl[0] if name.startswith("struct") or name.startswith("class"): self.add_class(decl) elif name.startswith("const"): self.add_const(decl) else: # function self.add_func(decl) logging.info("\n\n===== Generating... =====") moduleCppCode = StringIO() for ci in self.classes.values(): if ci.name == "Mat": continue ci.initCodeStreams(self.Module) self.gen_class(ci) classJavaCode = ci.generateJavaCode(self.module, self.Module) self.save("%s/%s+%s.java" % (output_path, module, ci.jname), classJavaCode) moduleCppCode.write(ci.generateCppCode()) ci.cleanupCodeStreams() self.save(output_path+"/"+module+".cpp", Template(T_CPP_MODULE).substitute(m = module, M = module.upper(), code = moduleCppCode.getvalue(), includes = "\n".join(includes))) self.save(output_path+"/"+module+".txt", self.makeReport()) def makeReport(self): ''' Returns string with generator report ''' report = StringIO() total_count = len(self.ported_func_list)+ len(self.skipped_func_list) report.write("PORTED FUNCs LIST (%i of %i):\n\n" % (len(self.ported_func_list), total_count)) report.write("\n".join(self.ported_func_list)) report.write("\n\nSKIPPED FUNCs LIST (%i of %i):\n\n" % (len(self.skipped_func_list), total_count)) report.write("".join(self.skipped_func_list)) for i in self.def_args_hist.keys(): report.write("\n%i def args - %i funcs" % (i, self.def_args_hist[i])) return report.getvalue() def fullTypeName(self, t): if self.isWrapped(t): return self.getClass(t).fullName(isCPP=True) else: return t def gen_func(self, ci, fi, prop_name=''): logging.info("%s", fi) j_code = ci.j_code jn_code = ci.jn_code cpp_code = ci.cpp_code # c_decl # e.g: void add(Mat src1, Mat src2, Mat dst, Mat mask = Mat(), int dtype = -1) if prop_name: c_decl = "%s %s::%s" % (fi.ctype, fi.classname, prop_name) else: decl_args = [] for a in fi.args: s = a.ctype or ' _hidden_ ' if a.pointer: s += "*" elif a.out: s += "&" s += " " + a.name if a.defval: s += " = "+a.defval decl_args.append(s) c_decl = "%s %s %s(%s)" % ( fi.static, fi.ctype, fi.cname, ", ".join(decl_args) ) # java comment j_code.write( "\n //\n // C++: %s\n //\n\n" % c_decl ) # check if we 'know' all the types if fi.ctype not in type_dict: # unsupported ret type msg = "// Return type '%s' is not supported, skipping the function\n\n" % fi.ctype self.skipped_func_list.append(c_decl + "\n" + msg) j_code.write( " "*4 + msg ) logging.warning("SKIP:" + c_decl.strip() + "\t due to RET type" + fi.ctype) return for a in fi.args: if a.ctype not in type_dict: if not a.defval and a.ctype.endswith("*"): a.defval = 0 if a.defval: a.ctype = '' continue msg = "// Unknown type '%s' (%s), skipping the function\n\n" % (a.ctype, a.out or "I") self.skipped_func_list.append(c_decl + "\n" + msg) j_code.write( " "*4 + msg ) logging.warning("SKIP:" + c_decl.strip() + "\t due to ARG type" + a.ctype + "/" + (a.out or "I")) return self.ported_func_list.append(c_decl) # jn & cpp comment jn_code.write( "\n // C++: %s\n" % c_decl ) cpp_code.write( "\n//\n// %s\n//\n" % c_decl ) # java args args = fi.args[:] # copy j_signatures=[] suffix_counter = int(ci.methods_suffixes.get(fi.jname, -1)) while True: suffix_counter += 1 ci.methods_suffixes[fi.jname] = suffix_counter # java native method args jn_args = [] # jni (cpp) function args jni_args = [ArgInfo([ "env", "env", "", [], "" ]), ArgInfo([ "cls", "", "", [], "" ])] j_prologue = [] j_epilogue = [] c_prologue = [] c_epilogue = [] if type_dict[fi.ctype]["jni_type"] == "jdoubleArray": fields = type_dict[fi.ctype]["jn_args"] c_epilogue.append( \ ("jdoubleArray _da_retval_ = env->NewDoubleArray(%(cnt)i); " + "jdouble _tmp_retval_[%(cnt)i] = {%(args)s}; " + "env->SetDoubleArrayRegion(_da_retval_, 0, %(cnt)i, _tmp_retval_);") % { "cnt" : len(fields), "args" : ", ".join(["(jdouble)_retval_" + f[1] for f in fields]) } ) if fi.classname and fi.ctype and not fi.static: # non-static class method except c-tor # adding 'self' jn_args.append ( ArgInfo([ "__int64", "nativeObj", "", [], "" ]) ) jni_args.append( ArgInfo([ "__int64", "self", "", [], "" ]) ) ci.addImports(fi.ctype) for a in args: if not a.ctype: # hidden continue ci.addImports(a.ctype) if "v_type" in type_dict[a.ctype]: # pass as vector if type_dict[a.ctype]["v_type"] in ("Mat", "vector_Mat"): #pass as Mat or vector_Mat jn_args.append ( ArgInfo([ "__int64", "%s_mat.nativeObj" % a.name, "", [], "" ]) ) jni_args.append ( ArgInfo([ "__int64", "%s_mat_nativeObj" % a.name, "", [], "" ]) ) c_prologue.append( type_dict[a.ctype]["jni_var"] % {"n" : a.name} + ";" ) c_prologue.append( "Mat& %(n)s_mat = *((Mat*)%(n)s_mat_nativeObj)" % {"n" : a.name} + ";" ) if "I" in a.out or not a.out: if type_dict[a.ctype]["v_type"] == "vector_Mat": j_prologue.append( "List %(n)s_tmplm = new ArrayList((%(n)s != null) ? %(n)s.size() : 0);" % {"n" : a.name } ) j_prologue.append( "Mat %(n)s_mat = Converters.%(t)s_to_Mat(%(n)s, %(n)s_tmplm);" % {"n" : a.name, "t" : a.ctype} ) else: if not type_dict[a.ctype]["j_type"].startswith("MatOf"): j_prologue.append( "Mat %(n)s_mat = Converters.%(t)s_to_Mat(%(n)s);" % {"n" : a.name, "t" : a.ctype} ) else: j_prologue.append( "Mat %s_mat = %s;" % (a.name, a.name) ) c_prologue.append( "Mat_to_%(t)s( %(n)s_mat, %(n)s );" % {"n" : a.name, "t" : a.ctype} ) else: if not type_dict[a.ctype]["j_type"].startswith("MatOf"): j_prologue.append( "Mat %s_mat = new Mat();" % a.name ) else: j_prologue.append( "Mat %s_mat = %s;" % (a.name, a.name) ) if "O" in a.out: if not type_dict[a.ctype]["j_type"].startswith("MatOf"): j_epilogue.append("Converters.Mat_to_%(t)s(%(n)s_mat, %(n)s);" % {"t" : a.ctype, "n" : a.name}) j_epilogue.append( "%s_mat.release();" % a.name ) c_epilogue.append( "%(t)s_to_Mat( %(n)s, %(n)s_mat );" % {"n" : a.name, "t" : a.ctype} ) else: #pass as list jn_args.append ( ArgInfo([ a.ctype, a.name, "", [], "" ]) ) jni_args.append ( ArgInfo([ a.ctype, "%s_list" % a.name , "", [], "" ]) ) c_prologue.append(type_dict[a.ctype]["jni_var"] % {"n" : a.name} + ";") if "I" in a.out or not a.out: c_prologue.append("%(n)s = List_to_%(t)s(env, %(n)s_list);" % {"n" : a.name, "t" : a.ctype}) if "O" in a.out: c_epilogue.append("Copy_%s_to_List(env,%s,%s_list);" % (a.ctype, a.name, a.name)) else: fields = type_dict[a.ctype].get("jn_args", ((a.ctype, ""),)) if "I" in a.out or not a.out or self.isWrapped(a.ctype): # input arg, pass by primitive fields for f in fields: jn_args.append ( ArgInfo([ f[0], a.name + f[1], "", [], "" ]) ) jni_args.append( ArgInfo([ f[0], a.name + f[1].replace(".","_").replace("[","").replace("]","").replace("_getNativeObjAddr()","_nativeObj"), "", [], "" ]) ) if "O" in a.out and not self.isWrapped(a.ctype): # out arg, pass as double[] jn_args.append ( ArgInfo([ "double[]", "%s_out" % a.name, "", [], "" ]) ) jni_args.append ( ArgInfo([ "double[]", "%s_out" % a.name, "", [], "" ]) ) j_prologue.append( "double[] %s_out = new double[%i];" % (a.name, len(fields)) ) c_epilogue.append( \ "jdouble tmp_%(n)s[%(cnt)i] = {%(args)s}; env->SetDoubleArrayRegion(%(n)s_out, 0, %(cnt)i, tmp_%(n)s);" % { "n" : a.name, "cnt" : len(fields), "args" : ", ".join(["(jdouble)" + a.name + f[1] for f in fields]) } ) if type_dict[a.ctype]["j_type"] in ('bool', 'int', 'long', 'float', 'double'): j_epilogue.append('if(%(n)s!=null) %(n)s[0] = (%(t)s)%(n)s_out[0];' % {'n':a.name,'t':type_dict[a.ctype]["j_type"]}) else: set_vals = [] i = 0 for f in fields: set_vals.append( "%(n)s%(f)s = %(t)s%(n)s_out[%(i)i]" % {"n" : a.name, "t": ("("+type_dict[f[0]]["j_type"]+")", "")[f[0]=="double"], "f" : f[1], "i" : i} ) i += 1 j_epilogue.append( "if("+a.name+"!=null){ " + "; ".join(set_vals) + "; } ") # calculate java method signature to check for uniqueness j_args = [] for a in args: if not a.ctype: #hidden continue jt = type_dict[a.ctype]["j_type"] if a.out and jt in ('bool', 'int', 'long', 'float', 'double'): jt += '[]' j_args.append( jt + ' ' + a.name ) j_signature = type_dict[fi.ctype]["j_type"] + " " + \ fi.jname + "(" + ", ".join(j_args) + ")" logging.info("java: " + j_signature) if(j_signature in j_signatures): if args: pop(args) continue else: break # java part: # private java NATIVE method decl # e.g. # private static native void add_0(long src1, long src2, long dst, long mask, int dtype); jn_code.write( Template(\ " private static native $type $name($args);\n").substitute(\ type = type_dict[fi.ctype].get("jn_type", "double[]"), \ name = fi.jname + '_' + str(suffix_counter), \ args = ", ".join(["%s %s" % (type_dict[a.ctype]["jn_type"], a.name.replace(".","_").replace("[","").replace("]","").replace("_getNativeObjAddr()","_nativeObj")) for a in jn_args]) ) ); # java part: #java doc comment f_name = fi.name if fi.classname: f_name = fi.classname + "::" + fi.name java_doc = "//javadoc: " + f_name + "(%s)" % ", ".join([a.name for a in args if a.ctype]) j_code.write(" "*4 + java_doc + "\n") if fi.docstring: lines = StringIO(fi.docstring) for line in lines: j_code.write(" "*4 + line + "\n") if fi.annotation: j_code.write(" "*4 + "\n".join(fi.annotation) + "\n") # public java wrapper method impl (calling native one above) # e.g. # public static void add( Mat src1, Mat src2, Mat dst, Mat mask, int dtype ) # { add_0( src1.nativeObj, src2.nativeObj, dst.nativeObj, mask.nativeObj, dtype ); } ret_type = fi.ctype if fi.ctype.endswith('*'): ret_type = ret_type[:-1] ret_val = type_dict[ret_type]["j_type"] + " retVal = " tail = "" ret = "return retVal;" if "v_type" in type_dict[ret_type]: j_type = type_dict[ret_type]["j_type"] if type_dict[ret_type]["v_type"] in ("Mat", "vector_Mat"): tail = ")" if j_type.startswith('MatOf'): ret_val += j_type + ".fromNativeAddr(" else: ret_val = "Mat retValMat = new Mat(" j_prologue.append( j_type + ' retVal = new Array' + j_type+'();') j_epilogue.append('Converters.Mat_to_' + ret_type + '(retValMat, retVal);') elif ret_type.startswith("Ptr_"): ret_val = type_dict[fi.ctype]["j_type"] + " retVal = new " + type_dict[ret_type]["j_type"] + "(" tail = ")" elif ret_type == "void": ret_val = "" ret = "return;" elif ret_type == "": # c-tor if fi.classname and ci.base: ret_val = "super( " tail = " )" else: ret_val = "nativeObj = " ret = "return;" elif self.isWrapped(ret_type): # wrapped class ret_val = type_dict[ret_type]["j_type"] + " retVal = new " + self.getClass(ret_type).jname + "(" tail = ")" elif "jn_type" not in type_dict[ret_type]: ret_val = type_dict[fi.ctype]["j_type"] + " retVal = new " + type_dict[ret_type]["j_type"] + "(" tail = ")" static = "static" if fi.classname: static = fi.static j_code.write( Template(\ """ public $static $j_type $j_name($j_args) { $prologue $ret_val$jn_name($jn_args_call)$tail; $epilogue $ret } """ ).substitute(\ ret = ret, \ ret_val = ret_val, \ tail = tail, \ prologue = "\n ".join(j_prologue), \ epilogue = "\n ".join(j_epilogue), \ static=static, \ j_type=type_dict[fi.ctype]["j_type"], \ j_name=fi.jname, \ j_args=", ".join(j_args), \ jn_name=fi.jname + '_' + str(suffix_counter), \ jn_args_call=", ".join( [a.name for a in jn_args] ),\ ) ) # cpp part: # jni_func(..) { _retval_ = cv_func(..); return _retval_; } ret = "return _retval_;" default = "return 0;" if fi.ctype == "void": ret = "return;" default = "return;" elif not fi.ctype: # c-tor ret = "return (jlong) _retval_;" elif "v_type" in type_dict[fi.ctype]: # c-tor if type_dict[fi.ctype]["v_type"] in ("Mat", "vector_Mat"): ret = "return (jlong) _retval_;" else: # returned as jobject ret = "return _retval_;" elif fi.ctype == "String": ret = "return env->NewStringUTF(_retval_.c_str());" default = 'return env->NewStringUTF("");' elif self.isWrapped(fi.ctype): # wrapped class: ret = "return (jlong) new %s(_retval_);" % self.fullTypeName(fi.ctype) elif fi.ctype.startswith('Ptr_'): c_prologue.append("typedef Ptr<%s> %s;" % (self.fullTypeName(fi.ctype[4:]), fi.ctype)) ret = "return (jlong)(new %(ctype)s(_retval_));" % { 'ctype':fi.ctype } elif self.isWrapped(ret_type): # pointer to wrapped class: ret = "return (jlong) _retval_;" elif type_dict[fi.ctype]["jni_type"] == "jdoubleArray": ret = "return _da_retval_;" # hack: replacing func call with property set/get name = fi.name if prop_name: if args: name = prop_name + " = " else: name = prop_name + ";//" cvname = fi.fullName(isCPP=True) retval = self.fullTypeName(fi.ctype) + " _retval_ = " if fi.ctype == "void": retval = "" elif fi.ctype == "String": retval = "cv::" + retval elif "v_type" in type_dict[fi.ctype]: # vector is returned retval = type_dict[fi.ctype]['jni_var'] % {"n" : '_ret_val_vector_'} + " = " if type_dict[fi.ctype]["v_type"] in ("Mat", "vector_Mat"): c_epilogue.append("Mat* _retval_ = new Mat();") c_epilogue.append(fi.ctype+"_to_Mat(_ret_val_vector_, *_retval_);") else: c_epilogue.append("jobject _retval_ = " + fi.ctype + "_to_List(env, _ret_val_vector_);") if len(fi.classname)>0: if not fi.ctype: # c-tor retval = fi.fullClass(isCPP=True) + "* _retval_ = " cvname = "new " + fi.fullClass(isCPP=True) elif fi.static: cvname = fi.fullName(isCPP=True) else: cvname = ("me->" if not self.isSmartClass(ci) else "(*me)->") + name c_prologue.append(\ "%(cls)s* me = (%(cls)s*) self; //TODO: check for NULL" \ % { "cls" : self.smartWrap(ci, fi.fullClass(isCPP=True))} \ ) cvargs = [] for a in args: if a.pointer: jni_name = "&%(n)s" else: jni_name = "%(n)s" if not a.out and not "jni_var" in type_dict[a.ctype]: # explicit cast to C type to avoid ambiguous call error on platforms (mingw) # where jni types are different from native types (e.g. jint is not the same as int) jni_name = "(%s)%s" % (a.ctype, jni_name) if not a.ctype: # hidden jni_name = a.defval cvargs.append( type_dict[a.ctype].get("jni_name", jni_name) % {"n" : a.name}) if "v_type" not in type_dict[a.ctype]: if ("I" in a.out or not a.out or self.isWrapped(a.ctype)) and "jni_var" in type_dict[a.ctype]: # complex type c_prologue.append(type_dict[a.ctype]["jni_var"] % {"n" : a.name} + ";") if a.out and "I" not in a.out and not self.isWrapped(a.ctype) and a.ctype: c_prologue.append("%s %s;" % (a.ctype, a.name)) rtype = type_dict[fi.ctype].get("jni_type", "jdoubleArray") clazz = ci.jname cpp_code.write ( Template( \ """ ${namespace} JNIEXPORT $rtype JNICALL Java_org_opencv_${module}_${clazz}_$fname ($argst); JNIEXPORT $rtype JNICALL Java_org_opencv_${module}_${clazz}_$fname ($args) { static const char method_name[] = "$module::$fname()"; try { LOGD("%s", method_name); $prologue $retval$cvname( $cvargs ); $epilogue$ret } catch(const std::exception &e) { throwJavaException(env, &e, method_name); } catch (...) { throwJavaException(env, 0, method_name); } $default } """ ).substitute( \ rtype = rtype, \ module = self.module.replace('_', '_1'), \ clazz = clazz.replace('_', '_1'), \ fname = (fi.jname + '_' + str(suffix_counter)).replace('_', '_1'), \ args = ", ".join(["%s %s" % (type_dict[a.ctype].get("jni_type"), a.name) for a in jni_args]), \ argst = ", ".join([type_dict[a.ctype].get("jni_type") for a in jni_args]), \ prologue = "\n ".join(c_prologue), \ epilogue = " ".join(c_epilogue) + ("\n " if c_epilogue else ""), \ ret = ret, \ cvname = cvname, \ cvargs = ", ".join(cvargs), \ default = default, \ retval = retval, \ namespace = ('using namespace ' + ci.namespace.replace('.', '::') + ';') if ci.namespace else '' ) ) # adding method signature to dictionarry j_signatures.append(j_signature) # processing args with default values if not args or not args[-1].defval: break while args and args[-1].defval: # 'smart' overloads filtering a = args.pop() if a.name in ('mask', 'dtype', 'ddepth', 'lineType', 'borderType', 'borderMode', 'criteria'): break def gen_class(self, ci): logging.info("%s", ci) # constants if ci.private_consts: logging.info("%s", ci.private_consts) ci.j_code.write(""" private static final int %s;\n\n""" % (",\n"+" "*12).join(["%s = %s" % (c.name, c.value) for c in ci.private_consts]) ) if ci.consts: logging.info("%s", ci.consts) ci.j_code.write(""" public static final int %s;\n\n""" % (",\n"+" "*12).join(["%s = %s" % (c.name, c.value) for c in ci.consts]) ) # methods for fi in ci.getAllMethods(): self.gen_func(ci, fi) # props for pi in ci.props: # getter getter_name = ci.fullName() + ".get_" + pi.name fi = FuncInfo( [getter_name, pi.ctype, [], []], self.namespaces ) # [ funcname, return_ctype, [modifiers], [args] ] self.gen_func(ci, fi, pi.name) if pi.rw: #setter setter_name = ci.fullName() + ".set_" + pi.name fi = FuncInfo( [ setter_name, "void", [], [ [pi.ctype, pi.name, "", [], ""] ] ], self.namespaces) self.gen_func(ci, fi, pi.name) # manual ports if ci.name in ManualFuncs: for func in ManualFuncs[ci.name].keys(): ci.j_code.write ( "\n".join(ManualFuncs[ci.name][func]["j_code"]) ) ci.jn_code.write( "\n".join(ManualFuncs[ci.name][func]["jn_code"]) ) ci.cpp_code.write( "\n".join(ManualFuncs[ci.name][func]["cpp_code"]) ) if ci.name != self.Module or ci.base: # finalize() ci.j_code.write( """ @Override protected void finalize() throws Throwable { delete(nativeObj); } """ ) ci.jn_code.write( """ // native support for java finalize() private static native void delete(long nativeObj); """ ) # native support for java finalize() ci.cpp_code.write( \ """ // // native support for java finalize() // static void %(cls)s::delete( __int64 self ) // JNIEXPORT void JNICALL Java_org_opencv_%(module)s_%(j_cls)s_delete(JNIEnv*, jclass, jlong); JNIEXPORT void JNICALL Java_org_opencv_%(module)s_%(j_cls)s_delete (JNIEnv*, jclass, jlong self) { delete (%(cls)s*) self; } """ % {"module" : module.replace('_', '_1'), "cls" : self.smartWrap(ci, ci.fullName(isCPP=True)), "j_cls" : ci.jname.replace('_', '_1')} ) def getClass(self, classname): return self.classes[classname or self.Module] def isWrapped(self, classname): name = classname or self.Module return name in self.classes def isSmartClass(self, ci): ''' Check if class stores Ptr* instead of T* in nativeObj field ''' if ci.smart != None: return ci.smart # if parents are smart (we hope) then children are! # if not we believe the class is smart if it has "create" method ci.smart = False if ci.base or ci.name == 'Algorithm': ci.smart = True else: for fi in ci.methods: if fi.name == "create": ci.smart = True break return ci.smart def smartWrap(self, ci, fullname): ''' Wraps fullname with Ptr<> if needed ''' if self.isSmartClass(ci): return "Ptr<" + fullname + ">" return fullname if __name__ == "__main__": # parse command line parameters import argparse arg_parser = argparse.ArgumentParser(description='OpenCV Java Wrapper Generator') arg_parser.add_argument('-p', '--parser', required=True, help='OpenCV header parser') arg_parser.add_argument('-m', '--module', required=True, help='OpenCV module name') arg_parser.add_argument('-s', '--srcfiles', required=True, nargs='+', help='Source headers to be wrapped') arg_parser.add_argument('-c', '--common', nargs='*', help='Common headers') arg_parser.add_argument('-t', '--gendict', nargs='*', help='Custom module dictionaries for C++ to Java conversion') args=arg_parser.parse_args() # import header parser hdr_parser_path = os.path.abspath(args.parser) if hdr_parser_path.endswith(".py"): hdr_parser_path = os.path.dirname(hdr_parser_path) sys.path.append(hdr_parser_path) import hdr_parser module = args.module srcfiles = args.srcfiles common_headers= args.common gen_dict_files = args.gendict dstdir = "." # initialize logger logging.basicConfig(filename='%s/%s.log' % (dstdir, module), format=None, filemode='w', level=logging.INFO) handler = logging.StreamHandler() handler.setLevel(logging.WARNING) logging.getLogger().addHandler(handler) # load dictionaries for gdf in gen_dict_files: with open(gdf) as f: gen_type_dict = json.load(f) if "class_ignore_list" in gen_type_dict: class_ignore_list += gen_type_dict["class_ignore_list"] if "const_ignore_list" in gen_type_dict: const_ignore_list += gen_type_dict["const_ignore_list"] if "const_private_list" in gen_type_dict: const_private_list += gen_type_dict["const_private_list"] if "missing_consts" in gen_type_dict: missing_consts.update(gen_type_dict["missing_consts"]) if "type_dict" in gen_type_dict: type_dict.update(gen_type_dict["type_dict"]) if "ManualFuncs" in gen_type_dict: ManualFuncs.update(gen_type_dict["ManualFuncs"]) if "func_arg_fix" in gen_type_dict: func_arg_fix.update(gen_type_dict["func_arg_fix"]) # launch Java Wrapper generator generator = JavaWrapperGenerator() generator.gen(srcfiles, module, dstdir, common_headers)