1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*************************************************************************/
/* jni_singleton.h */
/*************************************************************************/
/* 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. */
/*************************************************************************/
#ifndef JNI_SINGLETON_H
#define JNI_SINGLETON_H
#include <core/engine.h>
#include <core/variant.h>
#ifdef ANDROID_ENABLED
#include <platform/android/jni_utils.h>
#endif
class JNISingleton : public Object {
GDCLASS(JNISingleton, Object);
#ifdef ANDROID_ENABLED
struct MethodData {
jmethodID method;
Variant::Type ret_type;
Vector<Variant::Type> argtypes;
};
jobject instance;
Map<StringName, MethodData> method_map;
#endif
public:
virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) override {
#ifdef ANDROID_ENABLED
Map<StringName, MethodData>::Element *E = method_map.find(p_method);
// Check the method we're looking for is in the JNISingleton map and that
// the arguments match.
bool call_error = !E || E->get().argtypes.size() != p_argcount;
if (!call_error) {
for (int i = 0; i < p_argcount; i++) {
if (!Variant::can_convert(p_args[i]->get_type(), E->get().argtypes[i])) {
call_error = true;
break;
}
}
}
if (call_error) {
// The method is not in this map, defaulting to the regular instance calls.
return Object::call(p_method, p_args, p_argcount, r_error);
}
ERR_FAIL_COND_V(!instance, Variant());
r_error.error = Callable::CallError::CALL_OK;
jvalue *v = nullptr;
if (p_argcount) {
v = (jvalue *)alloca(sizeof(jvalue) * p_argcount);
}
JNIEnv *env = ThreadAndroid::get_env();
int res = env->PushLocalFrame(16);
ERR_FAIL_COND_V(res != 0, Variant());
List<jobject> to_erase;
for (int i = 0; i < p_argcount; i++) {
jvalret vr = _variant_to_jvalue(env, E->get().argtypes[i], p_args[i]);
v[i] = vr.val;
if (vr.obj)
to_erase.push_back(vr.obj);
}
Variant ret;
switch (E->get().ret_type) {
case Variant::NIL: {
env->CallVoidMethodA(instance, E->get().method, v);
} break;
case Variant::BOOL: {
ret = env->CallBooleanMethodA(instance, E->get().method, v) == JNI_TRUE;
} break;
case Variant::INT: {
ret = env->CallIntMethodA(instance, E->get().method, v);
} break;
case Variant::FLOAT: {
ret = env->CallFloatMethodA(instance, E->get().method, v);
} break;
case Variant::STRING: {
jobject o = env->CallObjectMethodA(instance, E->get().method, v);
ret = jstring_to_string((jstring)o, env);
env->DeleteLocalRef(o);
} break;
case Variant::PACKED_STRING_ARRAY: {
jobjectArray arr = (jobjectArray)env->CallObjectMethodA(instance, E->get().method, v);
ret = _jobject_to_variant(env, arr);
env->DeleteLocalRef(arr);
} break;
case Variant::PACKED_INT32_ARRAY: {
jintArray arr = (jintArray)env->CallObjectMethodA(instance, E->get().method, v);
int fCount = env->GetArrayLength(arr);
Vector<int> sarr;
sarr.resize(fCount);
int *w = sarr.ptrw();
env->GetIntArrayRegion(arr, 0, fCount, w);
ret = sarr;
env->DeleteLocalRef(arr);
} break;
case Variant::PACKED_FLOAT32_ARRAY: {
jfloatArray arr = (jfloatArray)env->CallObjectMethodA(instance, E->get().method, v);
int fCount = env->GetArrayLength(arr);
Vector<float> sarr;
sarr.resize(fCount);
float *w = sarr.ptrw();
env->GetFloatArrayRegion(arr, 0, fCount, w);
ret = sarr;
env->DeleteLocalRef(arr);
} break;
#ifndef _MSC_VER
#warning This is missing 64 bits arrays, I have no idea how to do it in JNI
#endif
case Variant::DICTIONARY: {
jobject obj = env->CallObjectMethodA(instance, E->get().method, v);
ret = _jobject_to_variant(env, obj);
env->DeleteLocalRef(obj);
} break;
default: {
env->PopLocalFrame(nullptr);
ERR_FAIL_V(Variant());
} break;
}
while (to_erase.size()) {
env->DeleteLocalRef(to_erase.front()->get());
to_erase.pop_front();
}
env->PopLocalFrame(nullptr);
return ret;
#else // ANDROID_ENABLED
// Defaulting to the regular instance calls.
return Object::call(p_method, p_args, p_argcount, r_error);
#endif
}
#ifdef ANDROID_ENABLED
jobject get_instance() const {
return instance;
}
void set_instance(jobject p_instance) {
instance = p_instance;
}
void add_method(const StringName &p_name, jmethodID p_method, const Vector<Variant::Type> &p_args, Variant::Type p_ret_type) {
MethodData md;
md.method = p_method;
md.argtypes = p_args;
md.ret_type = p_ret_type;
method_map[p_name] = md;
}
void add_signal(const StringName &p_name, const Vector<Variant::Type> &p_args) {
if (p_args.size() == 0)
ADD_SIGNAL(MethodInfo(p_name));
else if (p_args.size() == 1)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1")));
else if (p_args.size() == 2)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2")));
else if (p_args.size() == 3)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2"), PropertyInfo(p_args[2], "arg3")));
else if (p_args.size() == 4)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2"), PropertyInfo(p_args[2], "arg3"), PropertyInfo(p_args[3], "arg4")));
else if (p_args.size() == 5)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2"), PropertyInfo(p_args[2], "arg3"), PropertyInfo(p_args[3], "arg4"), PropertyInfo(p_args[4], "arg5")));
}
#endif
JNISingleton() {
#ifdef ANDROID_ENABLED
instance = nullptr;
#endif
}
};
#endif // JNI_SINGLETON_H
|