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<Point>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<Point> %(n)s", "suffix" : "J" },
"vector_Mat" : { "j_type" : "java.util.List<Mat>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<Mat> %(n)s", "suffix" : "J" },
"vector_KeyPoint" : { "j_type" : "java.util.List<KeyPoint>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<KeyPoint> %(n)s", "suffix" : "J" },
"vector_Rect" : { "j_type" : "java.util.List<Rect>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<Rect> %(n)s", "suffix" : "J" },
"vector_uchar" : { "j_type" : "java.util.List<Byte>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<uchar> %(n)s", "suffix" : "J" },
"vector_int" : { "j_type" : "java.util.List<Integer>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<int> %(n)s", "suffix" : "J" },
"vector_float" : { "j_type" : "java.util.List<Float>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<float> %(n)s", "suffix" : "J" },
"vector_double" : { "j_type" : "java.util.List<Double>", "jn_type" : "long", "jni_type" : "jlong", "jni_var" : "vector<double> %(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 <jni.h>
#ifdef DEBUG
#include <android/log.h>
#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]), \
"<full path to hdr_parser.py> <module name> <C++ header> [<C++ header>...]"
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)