import sys, re, os.path from string import Template try: from cStringIO import StringIO except: from StringIO import StringIO const_ignore_list = ( "CV_CAP_OPENNI", "CV_CAP_PROP_OPENNI_", "WINDOW_AUTOSIZE", "CV_WND_PROP_", "CV_WINDOW_", "CV_EVENT_", "CV_GUI_", "CV_PUSH_BUTTON", "CV_CHECKBOX", "CV_RADIOBOX", #attention! the following constants are added to this list using code automatic generation -- should be checked "CV_CAP_ANY", "CV_CAP_MIL", "CV_CAP_VFW", "CV_CAP_V4L", "CV_CAP_V4L2", "CV_CAP_FIREWARE", "CV_CAP_FIREWIRE", "CV_CAP_IEEE1394", "CV_CAP_DC1394", "CV_CAP_CMU1394", "CV_CAP_STEREO", "CV_CAP_TYZX", "CV_TYZX_LEFT", "CV_TYZX_RIGHT", "CV_TYZX_COLOR", "CV_TYZX_Z", "CV_CAP_QT", "CV_CAP_UNICAP", "CV_CAP_DSHOW", "CV_CAP_PVAPI", "CV_CAP_PROP_DC1394_OFF", "CV_CAP_PROP_DC1394_MODE_MANUAL", "CV_CAP_PROP_DC1394_MODE_AUTO", "CV_CAP_PROP_DC1394_MODE_ONE_PUSH_AUTO", "CV_CAP_PROP_POS_MSEC", "CV_CAP_PROP_POS_FRAMES", "CV_CAP_PROP_POS_AVI_RATIO", "CV_CAP_PROP_FPS", "CV_CAP_PROP_FOURCC", "CV_CAP_PROP_FRAME_COUNT", "CV_CAP_PROP_FORMAT", "CV_CAP_PROP_MODE", "CV_CAP_PROP_BRIGHTNESS", "CV_CAP_PROP_CONTRAST", "CV_CAP_PROP_SATURATION", "CV_CAP_PROP_HUE", "CV_CAP_PROP_GAIN", "CV_CAP_PROP_EXPOSURE", "CV_CAP_PROP_CONVERT_RGB", "CV_CAP_PROP_WHITE_BALANCE_BLUE_U", "CV_CAP_PROP_RECTIFICATION", "CV_CAP_PROP_MONOCROME", "CV_CAP_PROP_SHARPNESS", "CV_CAP_PROP_AUTO_EXPOSURE", "CV_CAP_PROP_GAMMA", "CV_CAP_PROP_TEMPERATURE", "CV_CAP_PROP_TRIGGER", "CV_CAP_PROP_TRIGGER_DELAY", "CV_CAP_PROP_WHITE_BALANCE_RED_V", "CV_CAP_PROP_MAX_DC1394", "CV_CAP_GSTREAMER_QUEUE_LENGTH", "CV_CAP_PROP_PVAPI_MULTICASTIP", ) func_ignore_list = ( "namedWindow", "destroyWindow", "destroyAllWindows", "startWindowThread", "setWindowProperty", "getWindowProperty", "getTrackbarPos", "setTrackbarPos", "imshow", "waitKey", ) class_ignore_list = ( "VideoWriter", "VideoCapture", ) # c_type : { java/jni correspondence } 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" }, "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" }, "double[]": { "j_type" : "double[]", "jn_type" : "double[]", "jni_type" : "jdoubleArray", "suffix" : "_3D" }, "vector_Point": { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, "vector_Mat" : { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, "vector_KeyPoint" : { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, "vector_Rect" : { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, "vector_uchar" : { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, "vector_int" : { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, "vector_float" : { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, "vector_double" : { "j_type" : "java.util.List", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector %(n)s", "suffix" : "J" }, # "complex" : { j_type : "?", jn_args : (("", ""),), jn_name : "", jni_var : "", jni_name : "", "suffix" : "?" }, "Mat" : { "j_type" : "Mat", "jn_type" : "long", "jn_args" : (("__int64", ".nativeObj"),), "jni_var" : "Mat& %(n)s = *((Mat*)%(n)s_nativeObj)", "jni_type" : "jlong", #"jni_name" : "*%(n)s", "suffix" : "J" }, "Point" : { "j_type" : "Point", "jn_args" : (("double", ".x"), ("double", ".y")), "jni_var" : "Point %(n)s((int)%(n)s_x, (int)%(n)s_y)", "jni_type" : "jdoubleArray", "suffix" : "DD"}, "Point2f" : { "j_type" : "Point", "jn_args" : (("double", ".x"), ("double", ".y")), "jni_var" : "Point2f %(n)s((float)%(n)s_x, (float)%(n)s_y)", "jni_type" : "jdoubleArray", "suffix" : "DD"}, "Point2d" : { "j_type" : "Point", "jn_args" : (("double", ".x"), ("double", ".y")), "jni_var" : "Point2d %(n)s(%(n)s_x, %(n)s_y)", "jni_type" : "jdoubleArray", "suffix" : "DD"}, "Point3i" : { "j_type" : "Point", "jn_args" : (("double", ".x"), ("double", ".y"), ("double", ".z")), "jni_var" : "Point3i %(n)s((int)%(n)s_x, (int)%(n)s_y, (int)%(n)s_z)", "jni_type" : "jdoubleArray", "suffix" : "DDD"}, "Point3f" : { "j_type" : "Point", "jn_args" : (("double", ".x"), ("double", ".y"), ("double", ".z")), "jni_var" : "Point3f %(n)s((float)%(n)s_x, (float)%(n)s_y, (float)%(n)s_z)", "jni_type" : "jdoubleArray", "suffix" : "DDD"}, "Point3d" : { "j_type" : "Point", "jn_args" : (("double", ".x"), ("double", ".y"), ("double", ".z")), "jni_var" : "Point3d %(n)s(%(n)s_x, %(n)s_y, %(n)s_z)", "jni_type" : "jdoubleArray", "suffix" : "DDD"}, "Rect" : { "j_type" : "Rect", "jn_args" : (("int", ".x"), ("int", ".y"), ("int", ".width"), ("int", ".height")), "jni_var" : "Rect %(n)s(%(n)s_x, %(n)s_y, %(n)s_width, %(n)s_height)", "jni_type" : "jdoubleArray", "suffix" : "IIII"}, "Size" : { "j_type" : "Size", "jn_args" : (("double", ".width"), ("double", ".height")), "jni_var" : "Size %(n)s((int)%(n)s_width, (int)%(n)s_height)", "jni_type" : "jdoubleArray", "suffix" : "DD"}, "Size2f" : { "j_type" : "Size", "jn_args" : (("double", ".width"), ("double", ".height")), "jni_var" : "Size2f %(n)s((float)%(n)s_width, (float)%(n)s_height)", "jni_type" : "jdoubleArray", "suffix" : "DD"}, "RotatedRect": { "j_type" : "RotatedRect", "jn_args" : (("double", ".center.x"), ("double", ".center.y"), ("double", ".size.width"), ("double", ".size.height"), ("double", ".angle")), "jni_var" : "RotatedRect %(n)s(cv::Point2f(%(n)s_center_x, %(n)s_center_y), cv::Size2f(%(n)s_size_width, %(n)s_size_height), %(n)s_angle)", "jni_type" : "jdoubleArray", "suffix" : "DDDDD"}, "Scalar" : { "j_type" : "Scalar", "jn_args" : (("double", ".val[0]"), ("double", ".val[1]"), ("double", ".val[2]"), ("double", ".val[3]")), "jni_var" : "Scalar %(n)s(%(n)s_val0, %(n)s_val1, %(n)s_val2, %(n)s_val3)", "jni_type" : "jdoubleArray", "suffix" : "DDDD"}, "Range" : { "j_type" : "Range", "jn_args" : (("int", ".start"), ("int", ".end")), "jni_var" : "Range %(n)s(%(n)s_start, %(n)s_end)", "jni_type" : "jdoubleArray", "suffix" : "II"}, "CvSlice" : { "j_type" : "Range", "jn_args" : (("int", ".start"), ("int", ".end")), "jni_var" : "Range %(n)s(%(n)s_start, %(n)s_end)", "jni_type" : "jdoubleArray", "suffix" : "II"}, "string" : { "j_type" : "java.lang.String", "jn_type" : "java.lang.String", "jni_type" : "jstring", "jni_name" : "n_%(n)s", "jni_var" : 'const char* utf_%(n)s = env->GetStringUTFChars(%(n)s, 0); std::string n_%(n)s( utf_%(n)s ? utf_%(n)s : "" ); env->ReleaseStringUTFChars(%(n)s, utf_%(n)s)', "suffix" : "Ljava_lang_String_2"}, "String" : { "j_type" : "java.lang.String", "jn_type" : "java.lang.String", "jni_type" : "jstring", "jni_name" : "n_%(n)s", "jni_var" : 'const char* utf_%(n)s = env->GetStringUTFChars(%(n)s, 0); String n_%(n)s( utf_%(n)s ? utf_%(n)s : "" ); env->ReleaseStringUTFChars(%(n)s, utf_%(n)s)', "suffix" : "Ljava_lang_String_2"}, "c_string": { "j_type" : "java.lang.String", "jn_type" : "java.lang.String", "jni_type" : "jstring", "jni_name" : "n_%(n)s.c_str()", "jni_var" : 'const char* utf_%(n)s = env->GetStringUTFChars(%(n)s, 0); std::string n_%(n)s( utf_%(n)s ? utf_%(n)s : "" ); env->ReleaseStringUTFChars(%(n)s, utf_%(n)s)', "suffix" : "Ljava_lang_String_2"}, "TermCriteria": { "j_type" : "TermCriteria", "jn_args" : (("int", ".type"), ("int", ".maxCount"), ("double", ".epsilon")), "jni_var" : "TermCriteria %(n)s(%(n)s_type, %(n)s_maxCount, %(n)s_epsilon)", "suffix" : "IID"}, } setManualFunctions=set(['minMaxLoc']) class ConstInfo(object): def __init__(self, cname, name, val): ## self.name = re.sub(r"^cv\.", "", name).replace(".", "_") self.cname = cname self.name = re.sub(r"^Cv", "", name) #self.name = re.sub(r"([a-z])([A-Z])", r"\1_\2", name) #self.name = self.name.upper() self.value = val class ClassInfo(object): def __init__(self, decl): # [ 'class/struct cname', [bases], [modlist] ] name = decl[0] name = name[name.find(" ")+1:].strip() self.cname = self.name = self.jname = re.sub(r"^cv\.", "", name) self.cname =self.cname.replace(".", "::") #self.jname = re.sub(r"^Cv", "", self.jname) self.methods = {} self.consts = [] # using a list to save the occurence order for m in decl[2]: if m.startswith("="): self.jname = m[1:] class ArgInfo(object): def __init__(self, arg_tuple): # [ ctype, name, def val, [mod], argno ] self.ctype = arg_tuple[0] 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" class FuncInfo(object): def __init__(self, decl): # [ funcname, return_ctype, [modifiers], [args] ] name = re.sub(r"^cv\.", "", decl[0]) self.cname = name.replace(".", "::") classname = "" dpos = name.rfind(".") if dpos >= 0: classname = name[:dpos] name = name[dpos+1:] self.classname = classname self.jname = self.name = name if "[" in name: self.jname = "getelem" for m in decl[2]: if m.startswith("="): self.jname = m[1:] self.jn_name = "n_" + self.jname self.jni_name= re.sub(r"_", "_1", self.jn_name) if self.classname: self.jni_name = "00024" + self.classname + "_" + self.jni_name self.static = ["","static"][ "/S" in decl[2] ] self.ctype = decl[1] or "" self.args = [] #self.jni_suffix = "__" #if self.classname and self.ctype and not self.static: # non-static class methods except c-tors # self.jni_suffix += "J" # artifical 'self' for a in decl[3]: ai = ArgInfo(a) self.args.append(ai) # self.jni_suffix += ctype2j.get(ai.ctype, ["","","",""])[3] class FuncFamilyInfo(object): def __init__(self, decl): # [ funcname, return_ctype, [modifiers], [args] ] self.funcs = [] self.funcs.append( FuncInfo(decl) ) self.jname = self.funcs[0].jname self.isconstructor = self.funcs[0].name == self.funcs[0].classname def add_func(self, fi): self.funcs.append( fi ) class JavaWrapperGenerator(object): def __init__(self): self.clear() def clear(self): self.classes = { "Mat" : ClassInfo([ 'class Mat', [], [] ]) } self.funcs = {} self.consts = [] # using a list to save the occurence order self.module = "" self.java_code = StringIO() self.jn_code = StringIO() self.cpp_code = StringIO() self.ported_func_counter = 0 self.ported_func_list = [] self.skipped_func_list = [] self.total_func_counter = 0 def add_class(self, decl): classinfo = ClassInfo(decl) if classinfo.name in class_ignore_list: return if classinfo.name in self.classes: print "Generator error: class %s (%s) is duplicated" % \ (classinfo.name, classinfo.cname) sys.exit(-1) self.classes[classinfo.name] = classinfo if classinfo.name in type_dict: print "Duplicated class: " + classinfo.name sys.exit(-1) type_dict[classinfo.name] = \ { "j_type" : classinfo.name, "jn_type" : "long", "jn_args" : (("__int64", ".nativeObj"),), "jni_name" : "(*("+classinfo.name+"*)%(n)s_nativeObj)", "jni_type" : "jlong", "suffix" : "J" } def add_const(self, decl): # [ "const cname", val, [], [] ] consts = self.consts name = decl[0].replace("const ", "").strip() name = re.sub(r"^cv\.", "", name) cname = name.replace(".", "::") for c in const_ignore_list: if re.match(c, name): return # check if it's a class member dpos = name.rfind(".") if dpos >= 0: classname = name[:dpos] name = name[dpos+1:] if classname in self.classes: consts = self.classes[classname].consts else: # this class isn't wrapped # skipping this const return constinfo = ConstInfo(cname, name, decl[1]) # checking duplication for c in consts: if c.name == constinfo.name: print "Generator error: constant %s (%s) is duplicated" \ % (constinfo.name, constinfo.cname) sys.exit(-1) consts.append(constinfo) def add_func(self, decl): ffi = FuncFamilyInfo(decl) if ffi.jname in setManualFunctions : print "Found function, which is ported manually: " + ffi.jname return None func_map = self.funcs classname = ffi.funcs[0].classname if classname in class_ignore_list or ffi.jname in func_ignore_list: return if classname: if classname in self.classes: func_map = self.classes[classname].methods else: print "Generator error: the class %s for method %s is missing" % \ (classname, ffi.jname) sys.exit(-1) if ffi.jname in func_map: func_map[ffi.jname].add_func(ffi.funcs[0]) else: func_map[ffi.jname] = ffi def save(self, path, name, buf): f = open(path + "/" + name, "wt") f.write(buf.getvalue()) f.close() def gen(self, srcfiles, module, output_path): self.clear() self.module = module parser = hdr_parser.CppHeaderParser() # step 1: scan the headers and build more descriptive maps of classes, consts, functions for hdr in srcfiles: decls = parser.parse(hdr) for decl in decls: name = decl[0] if name.startswith("struct") or name.startswith("class"): self.add_class(decl) pass elif name.startswith("const"): self.add_const(decl) else: # function self.add_func(decl) pass # java module header self.java_code.write("package org.opencv;\n\npublic class %s {\n" % module) if module == "core": self.java_code.write(\ """ private static final int CV_8U = 0, CV_8S = 1, CV_16U = 2, CV_16S = 3, CV_32S = 4, CV_32F = 5, CV_64F = 6, CV_USRTYPE1 = 7; //Manual ported functions // C++: minMaxLoc(Mat src, double* minVal, double* maxVal=0, Point* minLoc=0, Point* maxLoc=0, InputArray mask=noArray()) //javadoc: minMaxLoc public static class MinMaxLocResult { public double minVal; public double maxVal; public Point minLoc; public Point maxLoc; public MinMaxLocResult() { minVal=0; maxVal=0; minLoc=new Point(); maxLoc=new Point(); } } public static MinMaxLocResult minMaxLoc(Mat src, Mat mask) { MinMaxLocResult res = new MinMaxLocResult(); long maskNativeObj=0; if (mask != null) { maskNativeObj=mask.nativeObj; } double resarr[] = n_minMaxLocManual(src.nativeObj, maskNativeObj); res.minVal=resarr[0]; res.maxVal=resarr[1]; res.minLoc.x=resarr[2]; res.minLoc.y=resarr[3]; res.maxLoc.x=resarr[4]; res.maxLoc.y=resarr[5]; return res; } public static MinMaxLocResult minMaxLoc(Mat src) { return minMaxLoc(src, null); } private static native double[] n_minMaxLocManual(long src_nativeObj, long mask_nativeObj); """ ) if module == "imgproc": self.java_code.write(\ """ public static final int IPL_BORDER_CONSTANT = 0, IPL_BORDER_REPLICATE = 1, IPL_BORDER_REFLECT = 2, IPL_BORDER_WRAP = 3, IPL_BORDER_REFLECT_101 = 4, IPL_BORDER_TRANSPARENT = 5; """ ) if module == "calib3d": self.java_code.write(\ """ public static final int CV_LMEDS = 4, CV_RANSAC = 8, CV_FM_LMEDS = CV_LMEDS, CV_FM_RANSAC = CV_RANSAC; public static final int CV_FM_7POINT = 1, CV_FM_8POINT = 2; public static final int CV_CALIB_USE_INTRINSIC_GUESS = 1, CV_CALIB_FIX_ASPECT_RATIO = 2, CV_CALIB_FIX_PRINCIPAL_POINT = 4, CV_CALIB_ZERO_TANGENT_DIST = 8, CV_CALIB_FIX_FOCAL_LENGTH = 16, CV_CALIB_FIX_K1 = 32, CV_CALIB_FIX_K2 = 64, CV_CALIB_FIX_K3 = 128, CV_CALIB_FIX_K4 = 2048, CV_CALIB_FIX_K5 = 4096, CV_CALIB_FIX_K6 = 8192, CV_CALIB_RATIONAL_MODEL = 16384, CV_CALIB_FIX_INTRINSIC = 256, CV_CALIB_SAME_FOCAL_LENGTH = 512, CV_CALIB_ZERO_DISPARITY = 1024; """ ) # java native stuff self.jn_code.write(""" // // native stuff // static { System.loadLibrary("opencv_java"); } """) # cpp module header self.cpp_code.write(\ """// // This file is auto-generated, please don't edit! // #include #ifdef DEBUG #include #define MODULE_LOG_TAG "OpenCV.%s" #define LOGD(...) ((void)__android_log_print(ANDROID_LOG_DEBUG, MODULE_LOG_TAG, __VA_ARGS__)) #endif // DEBUG #include "utils.h" """ % module) self.cpp_code.write( "\n".join(['#include "opencv2/%s/%s"' % (module, os.path.basename(f)) \ for f in srcfiles]) ) self.cpp_code.write('\nusing namespace cv;\n') self.cpp_code.write('\n\nextern "C" {\n\n') # step 2: generate the code for global constants self.gen_consts() # step 3: generate the code for all the global functions self.gen_funcs() # step 4: generate code for the classes self.gen_classes() if module == "core": self.cpp_code.write(\ """ JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_n_1minMaxLocManual (JNIEnv* env, jclass cls, jlong src_nativeObj, jlong mask_nativeObj) { try { #ifdef DEBUG LOGD("core::n_1minMaxLoc()"); #endif // DEBUG jdoubleArray result; result = env->NewDoubleArray(6); if (result == NULL) { return NULL; /* out of memory error thrown */ } Mat& src = *((Mat*)src_nativeObj); double minVal, maxVal; Point minLoc, maxLoc; if (mask_nativeObj != 0) { Mat& mask = *((Mat*)mask_nativeObj); minMaxLoc(src, &minVal, &maxVal, &minLoc, &maxLoc, mask); } else { minMaxLoc(src, &minVal, &maxVal, &minLoc, &maxLoc); } jdouble fill[6]; fill[0]=minVal; fill[1]=maxVal; fill[2]=minLoc.x; fill[3]=minLoc.y; fill[4]=maxLoc.x; fill[5]=maxLoc.y; env->SetDoubleArrayRegion(result, 0, 6, fill); return result; } catch(cv::Exception e) { #ifdef DEBUG LOGD("core::n_1minMaxLoc() catched cv::Exception: %s", e.what()); #endif // DEBUG jclass je = env->FindClass("org/opencv/CvException"); if(!je) je = env->FindClass("java/lang/Exception"); env->ThrowNew(je, e.what()); return NULL; } catch (...) { #ifdef DEBUG LOGD("core::n_1minMaxLoc() catched unknown exception (...)"); #endif // DEBUG jclass je = env->FindClass("java/lang/Exception"); env->ThrowNew(je, "Unknown exception in JNI code {$module::$fname()}"); return NULL; } } """) # module tail self.java_code.write("\n\n" + self.jn_code.getvalue() + "\n") self.java_code.write("}\n") self.cpp_code.write('} // extern "C"\n') self.save(output_path, module+".java", self.java_code) self.save(output_path, module+".cpp", self.cpp_code) # report report = StringIO() report.write("PORTED FUNCs LIST (%i of %i):\n\n" % \ (self.ported_func_counter, self.total_func_counter) \ ) report.write("\n".join(self.ported_func_list)) report.write("\n\nSKIPPED FUNCs LIST (%i of %i):\n\n" % \ (self.total_func_counter - self.ported_func_counter, self.total_func_counter) \ ) report.write("".join(self.skipped_func_list)) self.save(output_path, module+".txt", report) print "Done %i of %i funcs." % (self.ported_func_counter, self.total_func_counter) def gen_consts(self): # generate the code for global constants if self.consts: self.java_code.write(""" public static final int """ + """, """.join(["%s = %s" % (c.name, c.value) for c in self.consts]) + \ ";\n\n") def gen_func(self, fi, isoverload, jn_code): self.total_func_counter += 1 # // C++: c_decl # e.g: # // C++: void add(Mat src1, Mat src2, Mat dst, Mat mask = Mat(), int dtype = -1) c_decl = "%s %s %s(%s)" % \ ( fi.static, fi.ctype, fi.cname, \ ", ".join(a.ctype + " " + a.name + [""," = "+a.defval][bool(a.defval)] for a in fi.args) ) indent = " " * 4 if fi.classname: indent += " " * 4 # java comment self.java_code.write( "\n"+indent+"//\n"+indent+"// C++: "+c_decl+"\n"+indent+"//\n\n" ) # 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) self.java_code.write( indent + msg ) #self.cpp_code.write( msg ) print "SKIP:", c_decl, "\n\tdue to RET type", fi.ctype return for a in fi.args: if a.ctype not in type_dict: 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) self.java_code.write( indent + msg ) #self.cpp_code.write( msg ) print "SKIP:", c_decl, "\n\tdue to ARG type", a.ctype, "/" + (a.out or "I") return self.ported_func_counter += 1 self.ported_func_list.append(c_decl) # jn & cpp comment jn_code.write( "\n%s// C++: %s\n" % (indent, c_decl) ) self.cpp_code.write( "\n//\n// %s\n//\n" % c_decl ) # java args args = fi.args[:] # copy if args and args[-1].defval: isoverload = True while True: # java native method args jn_args = [] # jni (cpp) function args jni_args = [ArgInfo([ "env", "env", "", [], "" ]), ArgInfo([ "cls", "cls", "", [], "" ])] suffix = "__" j_prologue = [] j_epilogue = [] c_prologue = [] c_epilogue = [] if type_dict[fi.ctype]["jni_type"] == "jdoubleArray": fields = type_dict[fi.ctype].get("jn_args") if fields: c_epilogue.append( \ "jdoubleArray _da_retval_ = env->NewDoubleArray(6); /* assuming '6' is enough*/ " + "jdouble _tmp_retval_[%(cnt)i] = {%(args)s}; env->SetDoubleArrayRegion(_da_retval_, 0, %(cnt)i, _tmp_retval_);" % { "cnt" : len(fields), "args" : ", ".join(["_retval_" + f[1] for f in fields]) } ) else: c_epilogue.append( "/* TODO: NYI !!! */" ) 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", "", [], "" ]) ) suffix += "J" for a in args: suffix += type_dict[a.ctype].get("suffix") or "" if "vector" in a.ctype: # pass as 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: j_prologue.append( "Mat %(n)s_mat = utils.%(t)s_to_Mat(%(n)s);" % {"n" : a.name, "t" : a.ctype} ) c_prologue.append( "Mat_to_%(t)s( %(n)s_mat, %(n)s );" % {"n" : a.name, "t" : a.ctype} ) else: j_prologue.append( "Mat %s_mat = new Mat();" % a.name ) if "O" in a.out: j_epilogue.append("utils.Mat_to_%(t)s(%(n)s_mat, %(n)s);" % {"t" : a.ctype, "n" : a.name}) c_prologue.append( "%(t)s_to_Mat( %(n)s, %(n)s_mat );" % {"n" : a.name, "t" : a.ctype} ) else: fields = type_dict[a.ctype].get("jn_args") if fields: # complex type 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("]",""), "", [], "" ]) ) else: jn_args.append(a) jni_args.append(a) if a.out and a.ctype not in self.classes: # pass as double[] jn_args.append ( ArgInfo([ "double[]", "%s_out" % a.name, "", [], "" ]) ) #jn_args.append ( ArgInfo([ "int", "%s_out.length" % a.name, "", [], "" ]) ) jni_args.append ( ArgInfo([ "double[]", "%s_out" % a.name, "", [], "" ]) ) #jni_args.append ( ArgInfo([ "int", "%s_out_length" % a.name, "", [], "" ]) ) j_prologue.append( "double[] %s_out = new double[%i];" % (a.name, len(type_dict[a.ctype].get("jn_args", [1]))) ) if fields: j_epilogue.append("%s.set(%s_out);" % (a.name, a.name)) 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([a.name + f[1] for f in fields]) } ) else: j_epilogue.append("/* TODO: NYI: %s.set(%s_out); */" % (a.name, a.name)) c_epilogue.append( \ "jdouble tmp_%(n)s[1] = {%(n)s}; env->SetDoubleArrayRegion(%(n)s_out, 0, 1, tmp_%(n)s);" % { "n" : a.name } ) # java part: # private java NATIVE method decl # e.g. # private static native void n_add(long src1, long src2, long dst, long mask, int dtype); jn_code.write( Template(\ "${indent}private static native $jn_type $jn_name($jn_args);\n").substitute(\ indent = indent, \ jn_type = type_dict[fi.ctype].get("jn_type", "double[]"), \ jn_name = fi.jn_name, \ jn_args = ", ".join(["%s %s" % (type_dict[a.ctype]["jn_type"], a.name.replace(".","_").replace("[","").replace("]","")) for a in jn_args]) ) ); # java part: #java doc comment f_name = fi.name if fi.classname: f_name = fi.classname + "::" + fi.name self.java_code.write(indent + "//javadoc: " + f_name + "(%s)\n" % \ ", ".join([a.name for a in args]) ) # 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 ) # { n_add( src1.nativeObj, src2.nativeObj, dst.nativeObj, mask.nativeObj, dtype ); } ret_val = type_dict[fi.ctype]["j_type"] + " retVal = " tail = "" ret = "return retVal;" if fi.ctype == "void": ret_val = "" ret = "return;" elif fi.ctype == "": # c-tor ret_val = "nativeObj = " ret = "return;" elif fi.ctype in self.classes: # wrapped class ret_val = type_dict[fi.ctype]["j_type"] + " retVal = new " + self.classes[fi.ctype].jname + "(" tail = ")" elif "jn_type" not in type_dict[fi.ctype]: ret_val = type_dict[fi.ctype]["j_type"] + " retVal = new " + type_dict[fi.ctype]["j_type"] + "(" tail = ")" static = "static" if fi.classname: static = fi.static self.java_code.write( Template(\ """${indent}public $static $j_type $j_name($j_args) $indent{ $indent $prologue $indent $ret_val$jn_name($jn_args_call)$tail; $indent $epilogue $indent $ret $indent} """ ).substitute(\ indent = indent, \ ret = ret, \ ret_val = ret_val, \ tail = tail, \ prologue = " ".join(j_prologue), \ epilogue = " ".join(j_epilogue), \ static=static, \ j_type=type_dict[fi.ctype]["j_type"], \ j_name=fi.jname, \ j_args=", ".join(["%s %s" % (type_dict[a.ctype]["j_type"], a.name) for a in args]), \ jn_name=fi.jn_name, \ 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 fi.ctype == "string": ret = "return env->NewStringUTF(_retval_.c_str());" default = 'return env->NewStringUTF("");' elif fi.ctype in self.classes: # wrapped class: ret = "return (jlong) new %s(_retval_);" % fi.ctype elif type_dict[fi.ctype]["jni_type"] == "jdoubleArray": ret = "return _da_retval_;" cvname = "cv::" + fi.name #j2cvargs = [] retval = fi.ctype + " _retval_ = " if fi.ctype == "void": retval = "" if fi.classname: if not fi.ctype: # c-tor retval = fi.classname + "* _retval_ = " cvname = "new " + fi.classname elif fi.static: cvname = "%s::%s" % (fi.classname, fi.name) else: cvname = "me->" + fi.name c_prologue.append(\ "%(cls)s* me = (%(cls)s*) self; //TODO: check for NULL" \ % { "cls" : fi.classname} \ ) cvargs = [] for a in args: cvargs.append( type_dict[a.ctype].get("jni_name", "%(n)s") % {"n" : a.name}) if "vector" not in a.ctype and "jni_var" in type_dict[a.ctype]: # complex type c_prologue.append(type_dict[a.ctype]["jni_var"] % {"n" : a.name} + ";") rtype = type_dict[fi.ctype].get("jni_type", "jdoubleArray") self.cpp_code.write ( Template( \ """ JNIEXPORT $rtype JNICALL Java_org_opencv_${module}_$fname ($args) { try { #ifdef DEBUG LOGD("$module::$fname()"); #endif // DEBUG $prologue $retval$cvname( $cvargs ); $epilogue $ret } catch(cv::Exception e) { #ifdef DEBUG LOGD("$module::$fname() catched cv::Exception: %s", e.what()); #endif // DEBUG jclass je = env->FindClass("org/opencv/CvException"); if(!je) je = env->FindClass("java/lang/Exception"); env->ThrowNew(je, e.what()); $default } catch (...) { #ifdef DEBUG LOGD("$module::$fname() catched unknown exception (...)"); #endif // DEBUG jclass je = env->FindClass("java/lang/Exception"); env->ThrowNew(je, "Unknown exception in JNI code {$module::$fname()}"); $default } } """ ).substitute( \ rtype = rtype, \ module = self.module, \ fname = fi.jni_name + ["",suffix][isoverload], \ args = ", ".join(["%s %s" % (type_dict[a.ctype].get("jni_type"), a.name) for a in jni_args]), \ prologue = "\n ".join(c_prologue), \ epilogue = " ".join(c_epilogue), \ ret = ret, \ cvname = cvname, \ cvargs = ", ".join([a for a in cvargs]), \ default = default, \ retval = retval, \ ) ) # processing args with default values if args and args[-1].defval: a = args.pop() else: break def gen_funcs(self): # generate the code for all the global functions indent = "\t" fflist = self.funcs.items() fflist.sort() for name, ffi in fflist: assert not ffi.funcs[0].classname, "Error: global func is a class member - "+name for fi in ffi.funcs: self.gen_func(fi, len(ffi.funcs)>1, self.jn_code) def gen_classes(self): # generate code for the classes (their methods and consts) indent = " " * 4 indent_m = indent + " " * 4 classlist = self.classes.items() classlist.sort() for name, ci in classlist: if name == "Mat": continue self.java_code.write( "\n\n" + indent + "// C++: class %s" % (ci.cname) + "\n" ) self.java_code.write( indent + "//javadoc: " + name + "\n" ) #java doc comment self.java_code.write( indent + "public static class %s {\n\n" % (ci.jname) ) # self self.java_code.write( indent_m + "protected final long nativeObj;\n" ) self.java_code.write( indent_m + "protected %s(long addr) { nativeObj = addr; }\n\n" \ % name ); # constants if ci.consts: prefix = "\n" + indent_m + "\t" s = indent_m + "public static final int" + prefix +\ ("," + prefix).join(["%s = %s" % (c.name, c.value) for c in ci.consts]) + ";\n\n" self.java_code.write( s ) # methods jn_code = StringIO() # c-tors fflist = ci.methods.items() fflist.sort() for n, ffi in fflist: if ffi.isconstructor: for fi in ffi.funcs: self.gen_func(fi, len(ffi.funcs)>1, jn_code) self.java_code.write( "\n" ) for n, ffi in fflist: if not ffi.isconstructor: for fi in ffi.funcs: self.gen_func(fi, len(ffi.funcs)>1, jn_code) # finalize() self.java_code.write( """ @Override protected void finalize() throws Throwable { n_delete(nativeObj); super.finalize(); } """ ) self.java_code.write(indent_m + "// native stuff\n\n") self.java_code.write(indent_m + 'static { System.loadLibrary("opencv_java"); }\n') self.java_code.write( jn_code.getvalue() ) self.java_code.write( """ // native support for java finalize() private static native void n_delete(long nativeObj); """ ) self.java_code.write("\n" + indent + "}\n\n") # native support for java finalize() self.cpp_code.write( \ """ // // native support for java finalize() // static void %(cls)s::n_delete( __int64 self ) // JNIEXPORT void JNICALL Java_org_opencv_%(module)s_00024%(cls)s_n_1delete (JNIEnv* env, jclass cls, jlong self) { delete (%(cls)s*) self; } """ % {"module" : module, "cls" : name} ) if __name__ == "__main__": if len(sys.argv) < 4: print "Usage:\n", \ os.path.basename(sys.argv[0]), \ " [...]" print "Current args are: ", ", ".join(["'"+a+"'" for a in sys.argv]) exit(0) dstdir = "." hdr_parser_path = os.path.abspath(sys.argv[1]) 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 = sys.argv[2] srcfiles = sys.argv[3:] print "Generating module '" + module + "' from headers:\n\t" + "\n\t".join(srcfiles) generator = JavaWrapperGenerator() generator.gen(srcfiles, module, dstdir)