godot/modules/gdnative/gdnative.cpp
2017-07-24 22:43:32 +02:00

332 lines
10 KiB
C++

/*************************************************************************/
/* gdnative.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 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 "gdnative.h"
#include "global_constants.h"
#include "io/file_access_encrypted.h"
#include "os/file_access.h"
#include "os/os.h"
#include "project_settings.h"
#include "scene/main/scene_tree.h"
const String init_symbol = "godot_gdnative_init";
const String terminate_symbol = "godot_gdnative_terminate";
String GDNativeLibrary::platform_names[NUM_PLATFORMS] = {
"X11_32bit",
"X11_64bit",
"Windows_32bit",
"Windows_64bit",
"OSX",
"Android",
"iOS",
"WebAssembly"
};
String GDNativeLibrary::platform_lib_ext[NUM_PLATFORMS] = {
"so",
"so",
"dll",
"dll",
"dylib",
"so",
"dylib",
"wasm"
};
// TODO(karroffel): make this actually do the right thing.
GDNativeLibrary::Platform GDNativeLibrary::current_platform =
#if defined(X11_ENABLED)
X11_64BIT;
#elif defined(WINDOWS_ENABLED)
WINDOWS_64BIT;
#elif defined(OSX_ENABLED)
OSX;
#else
X11_64BIT; // need a sensible default..
#endif
GDNativeLibrary::GDNativeLibrary()
: library_paths() {
}
GDNativeLibrary::~GDNativeLibrary() {
}
void GDNativeLibrary::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_library_path", "platform", "path"), &GDNativeLibrary::set_library_path);
ClassDB::bind_method(D_METHOD("get_library_path", "platform"), &GDNativeLibrary::get_library_path);
}
bool GDNativeLibrary::_set(const StringName &p_name, const Variant &p_value) {
String name = p_name;
if (name.begins_with("platform/")) {
set_library_path(name.get_slice("/", 1), p_value);
return true;
}
return false;
}
bool GDNativeLibrary::_get(const StringName &p_name, Variant &r_ret) const {
String name = p_name;
if (name.begins_with("platform/")) {
r_ret = get_library_path(name.get_slice("/", 1));
return true;
}
return false;
}
void GDNativeLibrary::_get_property_list(List<PropertyInfo> *p_list) const {
for (int i = 0; i < NUM_PLATFORMS; i++) {
p_list->push_back(PropertyInfo(Variant::STRING,
"platform/" + platform_names[i],
PROPERTY_HINT_FILE,
"*." + platform_lib_ext[i]));
}
}
void GDNativeLibrary::set_library_path(StringName p_platform, String p_path) {
int i;
for (i = 0; i <= NUM_PLATFORMS; i++) {
if (i == NUM_PLATFORMS) break;
if (platform_names[i] == p_platform) {
break;
}
}
if (i == NUM_PLATFORMS) {
ERR_EXPLAIN(String("No such platform: ") + p_platform);
ERR_FAIL();
}
library_paths[i] = p_path;
}
String GDNativeLibrary::get_library_path(StringName p_platform) const {
int i;
for (i = 0; i <= NUM_PLATFORMS; i++) {
if (i == NUM_PLATFORMS) break;
if (platform_names[i] == p_platform) {
break;
}
}
if (i == NUM_PLATFORMS) {
ERR_EXPLAIN(String("No such platform: ") + p_platform);
ERR_FAIL_V("");
}
return library_paths[i];
}
String GDNativeLibrary::get_active_library_path() const {
return library_paths[GDNativeLibrary::current_platform];
}
GDNative::GDNative() {
initialized = false;
native_handle = NULL;
}
GDNative::~GDNative() {
// TODO(karroffel): implement ALL the things!
}
extern "C" void _api_anchor();
void GDNative::_compile_dummy_for_api() {
_api_anchor();
}
void GDNative::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_library", "library:GDNativeLibrary"), &GDNative::set_library);
ClassDB::bind_method(D_METHOD("get_library:GDNativeLibrary"), &GDNative::get_library);
ClassDB::bind_method(D_METHOD("initialize"), &GDNative::initialize);
ClassDB::bind_method(D_METHOD("terminate"), &GDNative::terminate);
// TODO(karroffel): get_native_(raw_)call_types binding?
// TODO(karroffel): make this a varargs function?
ClassDB::bind_method(D_METHOD("call_native:Variant", "procedure_name", "arguments:Array"), &GDNative::call_native);
ADD_PROPERTYNZ(PropertyInfo(Variant::OBJECT, "library", PROPERTY_HINT_RESOURCE_TYPE, "GDNativeLibrary"), "set_library", "get_library");
}
void GDNative::set_library(Ref<GDNativeLibrary> p_library) {
library = p_library;
}
Ref<GDNativeLibrary> GDNative::get_library() {
return library;
}
bool GDNative::initialize() {
if (library.is_null()) {
ERR_PRINT("No library set, can't initialize GDNative object");
return false;
}
String lib_path = library->get_active_library_path();
if (lib_path.empty()) {
ERR_PRINT("No library set for this platform");
return false;
}
String path = ProjectSettings::get_singleton()->globalize_path(lib_path);
Error err = OS::get_singleton()->open_dynamic_library(path, native_handle);
if (err != OK) {
return false;
}
void *library_init;
err = OS::get_singleton()->get_dynamic_library_symbol_handle(
native_handle,
init_symbol,
library_init);
if (err || !library_init) {
return false;
}
godot_gdnative_init_fn library_init_fpointer;
library_init_fpointer = (godot_gdnative_init_fn)library_init;
godot_gdnative_init_options options;
options.in_editor = SceneTree::get_singleton()->is_editor_hint();
options.core_api_hash = ClassDB::get_api_hash(ClassDB::API_CORE);
options.editor_api_hash = ClassDB::get_api_hash(ClassDB::API_EDITOR);
options.no_api_hash = ClassDB::get_api_hash(ClassDB::API_NONE);
library_init_fpointer(&options);
return true;
}
bool GDNative::terminate() {
if (native_handle == NULL) {
ERR_PRINT("No valid library handle, can't terminate GDNative object");
return false;
}
Error error = OK;
void *library_terminate;
error = OS::get_singleton()->get_dynamic_library_symbol_handle(
native_handle,
terminate_symbol,
library_terminate);
if (error) {
OS::get_singleton()->close_dynamic_library(native_handle);
native_handle = NULL;
return true;
}
godot_gdnative_terminate_fn library_terminate_pointer;
library_terminate_pointer = (godot_gdnative_terminate_fn)library_terminate;
// TODO(karroffel): remove this? Should be part of NativeScript, not
// GDNative IMO
godot_gdnative_terminate_options options;
options.in_editor = SceneTree::get_singleton()->is_editor_hint();
library_terminate_pointer(&options);
// GDNativeScriptLanguage::get_singleton()->initialized_libraries.erase(p_native_lib->path);
OS::get_singleton()->close_dynamic_library(native_handle);
native_handle = NULL;
return false;
}
void GDNativeCallRegistry::register_native_call_type(StringName p_call_type, native_call_cb p_callback) {
native_calls.insert(p_call_type, p_callback);
}
void GDNativeCallRegistry::register_native_raw_call_type(StringName p_raw_call_type, native_raw_call_cb p_callback) {
native_raw_calls.insert(p_raw_call_type, p_callback);
}
Vector<StringName> GDNativeCallRegistry::get_native_call_types() {
Vector<StringName> call_types;
call_types.resize(native_calls.size());
size_t idx = 0;
for (Map<StringName, native_call_cb>::Element *E = native_calls.front(); E; E = E->next(), idx++) {
call_types[idx] = E->key();
}
return call_types;
}
Vector<StringName> GDNativeCallRegistry::get_native_raw_call_types() {
Vector<StringName> call_types;
call_types.resize(native_raw_calls.size());
size_t idx = 0;
for (Map<StringName, native_raw_call_cb>::Element *E = native_raw_calls.front(); E; E = E->next(), idx++) {
call_types[idx] = E->key();
}
return call_types;
}
Variant GDNative::call_native(StringName p_native_call_type, StringName p_procedure_name, Array p_arguments) {
Map<StringName, native_call_cb>::Element *E = GDNativeCallRegistry::singleton->native_calls.find(p_native_call_type);
if (!E) {
ERR_PRINT((String("No handler for native call type \"" + p_native_call_type) + "\" found").utf8().get_data());
return Variant();
}
String procedure_name = p_procedure_name;
godot_variant result = E->get()(native_handle, (godot_string *)&procedure_name, (godot_array *)&p_arguments);
return *(Variant *)&result;
}
void GDNative::call_native_raw(StringName p_raw_call_type, StringName p_procedure_name, void *data, int num_args, void **args, void *r_return) {
Map<StringName, native_raw_call_cb>::Element *E = GDNativeCallRegistry::singleton->native_raw_calls.find(p_raw_call_type);
if (!E) {
ERR_PRINT((String("No handler for native raw call type \"" + p_raw_call_type) + "\" found").utf8().get_data());
return;
}
String procedure_name = p_procedure_name;
E->get()(native_handle, (godot_string *)&procedure_name, data, num_args, args, r_return);
}