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-rw-r--r--platform/android/jni_utils.cpp434
1 files changed, 434 insertions, 0 deletions
diff --git a/platform/android/jni_utils.cpp b/platform/android/jni_utils.cpp
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index 0000000000..3fa4e80884
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+++ b/platform/android/jni_utils.cpp
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+/*************************************************************************/
+/* jni_utils.cpp */
+/*************************************************************************/
+/* This file is part of: */
+/* GODOT ENGINE */
+/* https://godotengine.org */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
+/* Copyright (c) 2014-2020 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);
+
+ jobjectArray jvalues = env->NewObjectArray(keys.size(), env->FindClass("java/lang/Object"), NULL);
+
+ 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) {
+
+ if (obj == NULL) {
+ 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 },
+ { NULL, 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;" },
+ { NULL, "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;";
+}
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