1 /*
2 Minetest
3 Copyright (C) 2014 celeron55, Perttu Ahola <celeron55@gmail.com>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #ifndef __ANDROID__
21 #error This file may only be compiled for android!
22 #endif
23
24 #include "util/numeric.h"
25 #include "porting.h"
26 #include "porting_android.h"
27 #include "threading/thread.h"
28 #include "config.h"
29 #include "filesys.h"
30 #include "log.h"
31
32 #include <sstream>
33 #include <exception>
34 #include <cstdlib>
35
36 #ifdef GPROF
37 #include "prof.h"
38 #endif
39
40 extern int main(int argc, char *argv[]);
41
android_main(android_app * app)42 void android_main(android_app *app)
43 {
44 int retval = 0;
45 porting::app_global = app;
46
47 Thread::setName("Main");
48
49 try {
50 char *argv[] = {strdup(PROJECT_NAME), nullptr};
51 main(ARRLEN(argv) - 1, argv);
52 free(argv[0]);
53 } catch (std::exception &e) {
54 errorstream << "Uncaught exception in main thread: " << e.what() << std::endl;
55 retval = -1;
56 } catch (...) {
57 errorstream << "Uncaught exception in main thread!" << std::endl;
58 retval = -1;
59 }
60
61 porting::cleanupAndroid();
62 infostream << "Shutting down." << std::endl;
63 exit(retval);
64 }
65
66 /**
67 * Handler for finished message box input
68 * Intentionally NOT in namespace porting
69 * ToDo: this doesn't work as expected, there's a workaround for it right now
70 */
71 extern "C" {
Java_net_minetest_minetest_GameActivity_putMessageBoxResult(JNIEnv * env,jclass thiz,jstring text)72 JNIEXPORT void JNICALL Java_net_minetest_minetest_GameActivity_putMessageBoxResult(
73 JNIEnv *env, jclass thiz, jstring text)
74 {
75 errorstream <<
76 "Java_net_minetest_minetest_GameActivity_putMessageBoxResult got: " <<
77 std::string((const char*) env->GetStringChars(text, nullptr)) << std::endl;
78 }
79 }
80
81 namespace porting {
82 android_app *app_global;
83 JNIEnv *jnienv;
84 jclass nativeActivity;
85
findClass(const std::string & classname)86 jclass findClass(const std::string &classname)
87 {
88 if (jnienv == nullptr)
89 return nullptr;
90
91 jclass nativeactivity = jnienv->FindClass("android/app/NativeActivity");
92 jmethodID getClassLoader = jnienv->GetMethodID(
93 nativeactivity, "getClassLoader", "()Ljava/lang/ClassLoader;");
94 jobject cls = jnienv->CallObjectMethod(
95 app_global->activity->clazz, getClassLoader);
96 jclass classLoader = jnienv->FindClass("java/lang/ClassLoader");
97 jmethodID findClass = jnienv->GetMethodID(classLoader, "loadClass",
98 "(Ljava/lang/String;)Ljava/lang/Class;");
99 jstring strClassName = jnienv->NewStringUTF(classname.c_str());
100 return (jclass) jnienv->CallObjectMethod(cls, findClass, strClassName);
101 }
102
initAndroid()103 void initAndroid()
104 {
105 porting::jnienv = nullptr;
106 JavaVM *jvm = app_global->activity->vm;
107 JavaVMAttachArgs lJavaVMAttachArgs;
108 lJavaVMAttachArgs.version = JNI_VERSION_1_6;
109 lJavaVMAttachArgs.name = PROJECT_NAME_C "NativeThread";
110 lJavaVMAttachArgs.group = nullptr;
111
112 if (jvm->AttachCurrentThread(&porting::jnienv, &lJavaVMAttachArgs) == JNI_ERR) {
113 errorstream << "Failed to attach native thread to jvm" << std::endl;
114 exit(-1);
115 }
116
117 nativeActivity = findClass("net/minetest/minetest/GameActivity");
118 if (nativeActivity == nullptr)
119 errorstream <<
120 "porting::initAndroid unable to find java native activity class" <<
121 std::endl;
122
123 #ifdef GPROF
124 // in the start-up code
125 __android_log_print(ANDROID_LOG_ERROR, PROJECT_NAME_C,
126 "Initializing GPROF profiler");
127 monstartup("libMinetest.so");
128 #endif
129 }
130
cleanupAndroid()131 void cleanupAndroid()
132 {
133 #ifdef GPROF
134 errorstream << "Shutting down GPROF profiler" << std::endl;
135 setenv("CPUPROFILE", (path_user + DIR_DELIM + "gmon.out").c_str(), 1);
136 moncleanup();
137 #endif
138
139 JavaVM *jvm = app_global->activity->vm;
140 jvm->DetachCurrentThread();
141 }
142
javaStringToUTF8(jstring js)143 static std::string javaStringToUTF8(jstring js)
144 {
145 std::string str;
146 // Get string as a UTF-8 c-string
147 const char *c_str = jnienv->GetStringUTFChars(js, nullptr);
148 // Save it
149 str = c_str;
150 // And free the c-string
151 jnienv->ReleaseStringUTFChars(js, c_str);
152 return str;
153 }
154
155 // Calls static method if obj is NULL
getAndroidPath(jclass cls,jobject obj,jmethodID mt_getAbsPath,const char * getter)156 static std::string getAndroidPath(
157 jclass cls, jobject obj, jmethodID mt_getAbsPath, const char *getter)
158 {
159 // Get getter method
160 jmethodID mt_getter;
161 if (obj)
162 mt_getter = jnienv->GetMethodID(cls, getter, "()Ljava/io/File;");
163 else
164 mt_getter = jnienv->GetStaticMethodID(cls, getter, "()Ljava/io/File;");
165
166 // Call getter
167 jobject ob_file;
168 if (obj)
169 ob_file = jnienv->CallObjectMethod(obj, mt_getter);
170 else
171 ob_file = jnienv->CallStaticObjectMethod(cls, mt_getter);
172
173 // Call getAbsolutePath
174 auto js_path = (jstring) jnienv->CallObjectMethod(ob_file, mt_getAbsPath);
175
176 return javaStringToUTF8(js_path);
177 }
178
initializePathsAndroid()179 void initializePathsAndroid()
180 {
181 // Get Environment class
182 jclass cls_Env = jnienv->FindClass("android/os/Environment");
183 // Get File class
184 jclass cls_File = jnienv->FindClass("java/io/File");
185 // Get getAbsolutePath method
186 jmethodID mt_getAbsPath = jnienv->GetMethodID(cls_File,
187 "getAbsolutePath", "()Ljava/lang/String;");
188 std::string path_storage = getAndroidPath(cls_Env, nullptr,
189 mt_getAbsPath, "getExternalStorageDirectory");
190
191 path_user = path_storage + DIR_DELIM + PROJECT_NAME_C;
192 path_share = path_storage + DIR_DELIM + PROJECT_NAME_C;
193 path_cache = getAndroidPath(nativeActivity,
194 app_global->activity->clazz, mt_getAbsPath, "getCacheDir");
195 migrateCachePath();
196 }
197
showInputDialog(const std::string & acceptButton,const std::string & hint,const std::string & current,int editType)198 void showInputDialog(const std::string &acceptButton, const std::string &hint,
199 const std::string ¤t, int editType)
200 {
201 jmethodID showdialog = jnienv->GetMethodID(nativeActivity, "showDialog",
202 "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;I)V");
203
204 FATAL_ERROR_IF(showdialog == nullptr,
205 "porting::showInputDialog unable to find java show dialog method");
206
207 jstring jacceptButton = jnienv->NewStringUTF(acceptButton.c_str());
208 jstring jhint = jnienv->NewStringUTF(hint.c_str());
209 jstring jcurrent = jnienv->NewStringUTF(current.c_str());
210 jint jeditType = editType;
211
212 jnienv->CallVoidMethod(app_global->activity->clazz, showdialog,
213 jacceptButton, jhint, jcurrent, jeditType);
214 }
215
openURIAndroid(const std::string & url)216 void openURIAndroid(const std::string &url)
217 {
218 jmethodID url_open = jnienv->GetMethodID(nativeActivity, "openURI",
219 "(Ljava/lang/String;)V");
220
221 FATAL_ERROR_IF(url_open == nullptr,
222 "porting::openURIAndroid unable to find java openURI method");
223
224 jstring jurl = jnienv->NewStringUTF(url.c_str());
225 jnienv->CallVoidMethod(app_global->activity->clazz, url_open, jurl);
226 }
227
getInputDialogState()228 int getInputDialogState()
229 {
230 jmethodID dialogstate = jnienv->GetMethodID(nativeActivity,
231 "getDialogState", "()I");
232
233 FATAL_ERROR_IF(dialogstate == nullptr,
234 "porting::getInputDialogState unable to find java dialog state method");
235
236 return jnienv->CallIntMethod(app_global->activity->clazz, dialogstate);
237 }
238
getInputDialogValue()239 std::string getInputDialogValue()
240 {
241 jmethodID dialogvalue = jnienv->GetMethodID(nativeActivity,
242 "getDialogValue", "()Ljava/lang/String;");
243
244 FATAL_ERROR_IF(dialogvalue == nullptr,
245 "porting::getInputDialogValue unable to find java dialog value method");
246
247 jobject result = jnienv->CallObjectMethod(app_global->activity->clazz,
248 dialogvalue);
249
250 const char *javachars = jnienv->GetStringUTFChars((jstring) result, nullptr);
251 std::string text(javachars);
252 jnienv->ReleaseStringUTFChars((jstring) result, javachars);
253
254 return text;
255 }
256
257 #ifndef SERVER
getDisplayDensity()258 float getDisplayDensity()
259 {
260 static bool firstrun = true;
261 static float value = 0;
262
263 if (firstrun) {
264 jmethodID getDensity = jnienv->GetMethodID(nativeActivity,
265 "getDensity", "()F");
266
267 FATAL_ERROR_IF(getDensity == nullptr,
268 "porting::getDisplayDensity unable to find java getDensity method");
269
270 value = jnienv->CallFloatMethod(app_global->activity->clazz, getDensity);
271 firstrun = false;
272 }
273 return value;
274 }
275
getDisplaySize()276 v2u32 getDisplaySize()
277 {
278 static bool firstrun = true;
279 static v2u32 retval;
280
281 if (firstrun) {
282 jmethodID getDisplayWidth = jnienv->GetMethodID(nativeActivity,
283 "getDisplayWidth", "()I");
284
285 FATAL_ERROR_IF(getDisplayWidth == nullptr,
286 "porting::getDisplayWidth unable to find java getDisplayWidth method");
287
288 retval.X = jnienv->CallIntMethod(app_global->activity->clazz,
289 getDisplayWidth);
290
291 jmethodID getDisplayHeight = jnienv->GetMethodID(nativeActivity,
292 "getDisplayHeight", "()I");
293
294 FATAL_ERROR_IF(getDisplayHeight == nullptr,
295 "porting::getDisplayHeight unable to find java getDisplayHeight method");
296
297 retval.Y = jnienv->CallIntMethod(app_global->activity->clazz,
298 getDisplayHeight);
299
300 firstrun = false;
301 }
302 return retval;
303 }
304 #endif // ndef SERVER
305 }
306