godot/platform/android/jni_utils.cpp

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/*************************************************************************/
/* jni_utils.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "jni_utils.h"
jvalret _variant_to_jvalue(JNIEnv *env, Variant::Type p_type, const Variant *p_arg, bool force_jobject) {
jvalret v;
switch (p_type) {
case Variant::BOOL: {
if (force_jobject) {
jclass bclass = env->FindClass("java/lang/Boolean");
jmethodID ctor = env->GetMethodID(bclass, "<init>", "(Z)V");
jvalue val;
val.z = (bool)(*p_arg);
jobject obj = env->NewObjectA(bclass, ctor, &val);
v.val.l = obj;
v.obj = obj;
env->DeleteLocalRef(bclass);
} else {
v.val.z = *p_arg;
};
} break;
case Variant::INT: {
if (force_jobject) {
jclass bclass = env->FindClass("java/lang/Integer");
jmethodID ctor = env->GetMethodID(bclass, "<init>", "(I)V");
jvalue val;
val.i = (int)(*p_arg);
jobject obj = env->NewObjectA(bclass, ctor, &val);
v.val.l = obj;
v.obj = obj;
env->DeleteLocalRef(bclass);
} else {
v.val.i = *p_arg;
};
} break;
case Variant::FLOAT: {
if (force_jobject) {
jclass bclass = env->FindClass("java/lang/Double");
jmethodID ctor = env->GetMethodID(bclass, "<init>", "(D)V");
jvalue val;
val.d = (double)(*p_arg);
jobject obj = env->NewObjectA(bclass, ctor, &val);
v.val.l = obj;
v.obj = obj;
env->DeleteLocalRef(bclass);
} else {
v.val.f = *p_arg;
};
} break;
case Variant::STRING: {
String s = *p_arg;
jstring jStr = env->NewStringUTF(s.utf8().get_data());
v.val.l = jStr;
v.obj = jStr;
} break;
case Variant::PACKED_STRING_ARRAY: {
Vector<String> sarray = *p_arg;
jobjectArray arr = env->NewObjectArray(sarray.size(), env->FindClass("java/lang/String"), env->NewStringUTF(""));
for (int j = 0; j < sarray.size(); j++) {
jstring str = env->NewStringUTF(sarray[j].utf8().get_data());
env->SetObjectArrayElement(arr, j, str);
env->DeleteLocalRef(str);
}
v.val.l = arr;
v.obj = arr;
} break;
case Variant::DICTIONARY: {
Dictionary dict = *p_arg;
jclass dclass = env->FindClass("org/godotengine/godot/Dictionary");
jmethodID ctor = env->GetMethodID(dclass, "<init>", "()V");
jobject jdict = env->NewObject(dclass, ctor);
Array keys = dict.keys();
jobjectArray jkeys = env->NewObjectArray(keys.size(), env->FindClass("java/lang/String"), env->NewStringUTF(""));
for (int j = 0; j < keys.size(); j++) {
jstring str = env->NewStringUTF(String(keys[j]).utf8().get_data());
env->SetObjectArrayElement(jkeys, j, str);
env->DeleteLocalRef(str);
};
jmethodID set_keys = env->GetMethodID(dclass, "set_keys", "([Ljava/lang/String;)V");
jvalue val;
val.l = jkeys;
env->CallVoidMethodA(jdict, set_keys, &val);
env->DeleteLocalRef(jkeys);
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jobjectArray jvalues = env->NewObjectArray(keys.size(), env->FindClass("java/lang/Object"), nullptr);
for (int j = 0; j < keys.size(); j++) {
Variant var = dict[keys[j]];
jvalret v = _variant_to_jvalue(env, var.get_type(), &var, true);
env->SetObjectArrayElement(jvalues, j, v.val.l);
if (v.obj) {
env->DeleteLocalRef(v.obj);
}
};
jmethodID set_values = env->GetMethodID(dclass, "set_values", "([Ljava/lang/Object;)V");
val.l = jvalues;
env->CallVoidMethodA(jdict, set_values, &val);
env->DeleteLocalRef(jvalues);
env->DeleteLocalRef(dclass);
v.val.l = jdict;
v.obj = jdict;
} break;
case Variant::PACKED_INT32_ARRAY: {
Vector<int> array = *p_arg;
jintArray arr = env->NewIntArray(array.size());
const int *r = array.ptr();
env->SetIntArrayRegion(arr, 0, array.size(), r);
v.val.l = arr;
v.obj = arr;
} break;
case Variant::PACKED_BYTE_ARRAY: {
Vector<uint8_t> array = *p_arg;
jbyteArray arr = env->NewByteArray(array.size());
const uint8_t *r = array.ptr();
env->SetByteArrayRegion(arr, 0, array.size(), reinterpret_cast<const signed char *>(r));
v.val.l = arr;
v.obj = arr;
} break;
case Variant::PACKED_FLOAT32_ARRAY: {
Vector<float> array = *p_arg;
jfloatArray arr = env->NewFloatArray(array.size());
const float *r = array.ptr();
env->SetFloatArrayRegion(arr, 0, array.size(), r);
v.val.l = arr;
v.obj = arr;
} break;
#ifndef _MSC_VER
#warning This is missing 64 bits arrays, I have no idea how to do it in JNI
#endif
default: {
v.val.i = 0;
} break;
}
return v;
}
String _get_class_name(JNIEnv *env, jclass cls, bool *array) {
jclass cclass = env->FindClass("java/lang/Class");
jmethodID getName = env->GetMethodID(cclass, "getName", "()Ljava/lang/String;");
jstring clsName = (jstring)env->CallObjectMethod(cls, getName);
if (array) {
jmethodID isArray = env->GetMethodID(cclass, "isArray", "()Z");
jboolean isarr = env->CallBooleanMethod(cls, isArray);
(*array) = isarr ? true : false;
}
String name = jstring_to_string(clsName, env);
env->DeleteLocalRef(clsName);
return name;
}
Variant _jobject_to_variant(JNIEnv *env, jobject obj) {
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if (obj == nullptr) {
return Variant();
}
jclass c = env->GetObjectClass(obj);
bool array;
String name = _get_class_name(env, c, &array);
if (name == "java.lang.String") {
return jstring_to_string((jstring)obj, env);
};
if (name == "[Ljava.lang.String;") {
jobjectArray arr = (jobjectArray)obj;
int stringCount = env->GetArrayLength(arr);
Vector<String> sarr;
for (int i = 0; i < stringCount; i++) {
jstring string = (jstring)env->GetObjectArrayElement(arr, i);
sarr.push_back(jstring_to_string(string, env));
env->DeleteLocalRef(string);
}
return sarr;
};
if (name == "java.lang.Boolean") {
jmethodID boolValue = env->GetMethodID(c, "booleanValue", "()Z");
bool ret = env->CallBooleanMethod(obj, boolValue);
return ret;
};
if (name == "java.lang.Integer" || name == "java.lang.Long") {
jclass nclass = env->FindClass("java/lang/Number");
jmethodID longValue = env->GetMethodID(nclass, "longValue", "()J");
jlong ret = env->CallLongMethod(obj, longValue);
return ret;
};
if (name == "[I") {
jintArray arr = (jintArray)obj;
int fCount = env->GetArrayLength(arr);
Vector<int> sarr;
sarr.resize(fCount);
int *w = sarr.ptrw();
env->GetIntArrayRegion(arr, 0, fCount, w);
return sarr;
};
if (name == "[B") {
jbyteArray arr = (jbyteArray)obj;
int fCount = env->GetArrayLength(arr);
Vector<uint8_t> sarr;
sarr.resize(fCount);
uint8_t *w = sarr.ptrw();
env->GetByteArrayRegion(arr, 0, fCount, reinterpret_cast<signed char *>(w));
return sarr;
};
if (name == "java.lang.Float" || name == "java.lang.Double") {
jclass nclass = env->FindClass("java/lang/Number");
jmethodID doubleValue = env->GetMethodID(nclass, "doubleValue", "()D");
double ret = env->CallDoubleMethod(obj, doubleValue);
return ret;
};
if (name == "[D") {
jdoubleArray arr = (jdoubleArray)obj;
int fCount = env->GetArrayLength(arr);
PackedFloat32Array sarr;
sarr.resize(fCount);
real_t *w = sarr.ptrw();
for (int i = 0; i < fCount; i++) {
double n;
env->GetDoubleArrayRegion(arr, i, 1, &n);
w[i] = n;
};
return sarr;
};
if (name == "[F") {
jfloatArray arr = (jfloatArray)obj;
int fCount = env->GetArrayLength(arr);
PackedFloat32Array sarr;
sarr.resize(fCount);
real_t *w = sarr.ptrw();
for (int i = 0; i < fCount; i++) {
float n;
env->GetFloatArrayRegion(arr, i, 1, &n);
w[i] = n;
};
return sarr;
};
if (name == "[Ljava.lang.Object;") {
jobjectArray arr = (jobjectArray)obj;
int objCount = env->GetArrayLength(arr);
Array varr;
for (int i = 0; i < objCount; i++) {
jobject jobj = env->GetObjectArrayElement(arr, i);
Variant v = _jobject_to_variant(env, jobj);
varr.push_back(v);
env->DeleteLocalRef(jobj);
}
return varr;
};
if (name == "java.util.HashMap" || name == "org.godotengine.godot.Dictionary") {
Dictionary ret;
jclass oclass = c;
jmethodID get_keys = env->GetMethodID(oclass, "get_keys", "()[Ljava/lang/String;");
jobjectArray arr = (jobjectArray)env->CallObjectMethod(obj, get_keys);
PackedStringArray keys = _jobject_to_variant(env, arr);
env->DeleteLocalRef(arr);
jmethodID get_values = env->GetMethodID(oclass, "get_values", "()[Ljava/lang/Object;");
arr = (jobjectArray)env->CallObjectMethod(obj, get_values);
Array vals = _jobject_to_variant(env, arr);
env->DeleteLocalRef(arr);
for (int i = 0; i < keys.size(); i++) {
ret[keys[i]] = vals[i];
};
return ret;
};
env->DeleteLocalRef(c);
return Variant();
}
Variant::Type get_jni_type(const String &p_type) {
static struct {
const char *name;
Variant::Type type;
} _type_to_vtype[] = {
{ "void", Variant::NIL },
{ "boolean", Variant::BOOL },
{ "int", Variant::INT },
{ "float", Variant::FLOAT },
{ "double", Variant::FLOAT },
{ "java.lang.String", Variant::STRING },
{ "[I", Variant::PACKED_INT32_ARRAY },
{ "[B", Variant::PACKED_BYTE_ARRAY },
{ "[F", Variant::PACKED_FLOAT32_ARRAY },
{ "[Ljava.lang.String;", Variant::PACKED_STRING_ARRAY },
{ "org.godotengine.godot.Dictionary", Variant::DICTIONARY },
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{ nullptr, Variant::NIL }
};
int idx = 0;
while (_type_to_vtype[idx].name) {
if (p_type == _type_to_vtype[idx].name)
return _type_to_vtype[idx].type;
idx++;
}
return Variant::NIL;
}
const char *get_jni_sig(const String &p_type) {
static struct {
const char *name;
const char *sig;
} _type_to_vtype[] = {
{ "void", "V" },
{ "boolean", "Z" },
{ "int", "I" },
{ "float", "F" },
{ "double", "D" },
{ "java.lang.String", "Ljava/lang/String;" },
{ "org.godotengine.godot.Dictionary", "Lorg/godotengine/godot/Dictionary;" },
{ "[I", "[I" },
{ "[B", "[B" },
{ "[F", "[F" },
{ "[Ljava.lang.String;", "[Ljava/lang/String;" },
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{ nullptr, "V" }
};
int idx = 0;
while (_type_to_vtype[idx].name) {
if (p_type == _type_to_vtype[idx].name)
return _type_to_vtype[idx].sig;
idx++;
}
return "Ljava/lang/Object;";
}