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Add signal support to Godot Android plugin:

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Supports registering and emitting signal from a Godot Android plugin
This commit is contained in:
fhuya
2020-03-25 14:01:12 -07:00
parent 0826b63c7e
commit 948c3cbb88
8 changed files with 480 additions and 188 deletions
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186
platform/android/jni_utils.h
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@@ -53,190 +53,4 @@ Variant::Type get_jni_type(const String &p_type);
const char *get_jni_sig(const String &p_type);
class JNISingleton : public Object {
GDCLASS(JNISingleton, Object);
struct MethodData {
jmethodID method;
Variant::Type ret_type;
Vector<Variant::Type> argtypes;
};
jobject instance;
Map<StringName, MethodData> method_map;
public:
virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
ERR_FAIL_COND_V(!instance, Variant());
r_error.error = Callable::CallError::CALL_OK;
Map<StringName, MethodData>::Element *E = method_map.find(p_method);
if (!E) {
r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
return Variant();
}
int ac = E->get().argtypes.size();
if (ac < p_argcount) {
r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = ac;
return Variant();
}
if (ac > p_argcount) {
r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = ac;
return Variant();
}
for (int i = 0; i < p_argcount; i++) {
if (!Variant::can_convert(p_args[i]->get_type(), E->get().argtypes[i])) {
r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = i;
r_error.expected = E->get().argtypes[i];
}
}
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;
}
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;
}
JNISingleton() {
instance = nullptr;
}
};
#endif // JNI_UTILS_H