src/porting_android.cpp

   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
  42 void android_main(android_app *app)
  43 {
  44         int retval = 0;
  45         porting::app_global = app;
  46
  47         Thread::setName("Main");
  48
  49         char *argv[] = {strdup(PROJECT_NAME), strdup("--verbose"), nullptr};
  50         try {
  51                 main(ARRLEN(argv) - 1, argv);
  52         } catch (std::exception &e) {
  53                 errorstream << "Uncaught exception in main thread: " << e.what() << std::endl;
  54                 retval = -1;
  55         } catch (...) {
  56                 errorstream << "Uncaught exception in main thread!" << std::endl;
  57                 retval = -1;
  58         }
  59         free(argv[0]);
  60         free(argv[1]);
  61
  62         porting::cleanupAndroid();
  63         infostream << "Shutting down." << std::endl;
  64         exit(retval);
  65 }
  66
  67 /**
  68  * Handler for finished message box input
  69  * Intentionally NOT in namespace porting
  70  * ToDo: this doesn't work as expected, there's a workaround for it right now
  71  */
  72 extern "C" {
  73         JNIEXPORT void JNICALL Java_net_minetest_minetest_GameActivity_putMessageBoxResult(
  74                         JNIEnv *env, jclass thiz, jstring text)
  75         {
  76                 errorstream <<
  77                         "Java_net_minetest_minetest_GameActivity_putMessageBoxResult got: " <<
  78                         std::string((const char*) env->GetStringChars(text, nullptr)) << std::endl;
  79         }
  80 }
  81
  82 namespace porting {
  83 android_app *app_global;
  84 JNIEnv      *jnienv;
  85 jclass       nativeActivity;
  86
  87 jclass findClass(const std::string &classname)
  88 {
  89         if (jnienv == nullptr)
  90                 return nullptr;
  91
  92         jclass nativeactivity = jnienv->FindClass("android/app/NativeActivity");
  93         jmethodID getClassLoader = jnienv->GetMethodID(
  94                         nativeactivity, "getClassLoader", "()Ljava/lang/ClassLoader;");
  95         jobject cls = jnienv->CallObjectMethod(
  96                                                 app_global->activity->clazz, getClassLoader);
  97         jclass classLoader = jnienv->FindClass("java/lang/ClassLoader");
  98         jmethodID findClass = jnienv->GetMethodID(classLoader, "loadClass",
  99                                         "(Ljava/lang/String;)Ljava/lang/Class;");
 100         jstring strClassName = jnienv->NewStringUTF(classname.c_str());
 101         return (jclass) jnienv->CallObjectMethod(cls, findClass, strClassName);
 102 }
 103
 104 void initAndroid()
 105 {
 106         porting::jnienv = nullptr;
 107         JavaVM *jvm = app_global->activity->vm;
 108         JavaVMAttachArgs lJavaVMAttachArgs;
 109         lJavaVMAttachArgs.version = JNI_VERSION_1_6;
 110         lJavaVMAttachArgs.name = PROJECT_NAME_C "NativeThread";
 111         lJavaVMAttachArgs.group = nullptr;
 112
 113         if (jvm->AttachCurrentThread(&porting::jnienv, &lJavaVMAttachArgs) == JNI_ERR) {
 114                 errorstream << "Failed to attach native thread to jvm" << std::endl;
 115                 exit(-1);
 116         }
 117
 118         nativeActivity = findClass("net/minetest/minetest/GameActivity");
 119         if (nativeActivity == nullptr)
 120                 errorstream <<
 121                         "porting::initAndroid unable to find java native activity class" <<
 122                         std::endl;
 123
 124 #ifdef GPROF
 125         // in the start-up code
 126         __android_log_print(ANDROID_LOG_ERROR, PROJECT_NAME_C,
 127                         "Initializing GPROF profiler");
 128         monstartup("libMinetest.so");
 129 #endif
 130 }
 131
 132 void cleanupAndroid()
 133 {
 134 #ifdef GPROF
 135         errorstream << "Shutting down GPROF profiler" << std::endl;
 136         setenv("CPUPROFILE", (path_user + DIR_DELIM + "gmon.out").c_str(), 1);
 137         moncleanup();
 138 #endif
 139
 140         JavaVM *jvm = app_global->activity->vm;
 141         jvm->DetachCurrentThread();
 142 }
 143
 144 static std::string javaStringToUTF8(jstring js)
 145 {
 146         std::string str;
 147         // Get string as a UTF-8 c-string
 148         const char *c_str = jnienv->GetStringUTFChars(js, nullptr);
 149         // Save it
 150         str = c_str;
 151         // And free the c-string
 152         jnienv->ReleaseStringUTFChars(js, c_str);
 153         return str;
 154 }
 155
 156 void initializePathsAndroid()
 157 {
 158         // Set user and share paths
 159         {
 160                 jmethodID getUserDataPath = jnienv->GetMethodID(nativeActivity,
 161                                 "getUserDataPath", "()Ljava/lang/String;");
 162                 FATAL_ERROR_IF(getUserDataPath==nullptr,
 163                                 "porting::initializePathsAndroid unable to find Java getUserDataPath method");
 164                 jobject result = jnienv->CallObjectMethod(app_global->activity->clazz, getUserDataPath);
 165                 const char *javachars = jnienv->GetStringUTFChars((jstring) result, nullptr);
 166                 path_user = javachars;
 167                 path_share = javachars;
 168                 path_locale  = path_share + DIR_DELIM + "locale";
 169                 jnienv->ReleaseStringUTFChars((jstring) result, javachars);
 170         }
 171
 172         // Set cache path
 173         {
 174                 jmethodID getCachePath = jnienv->GetMethodID(nativeActivity,
 175                                 "getCachePath", "()Ljava/lang/String;");
 176                 FATAL_ERROR_IF(getCachePath==nullptr,
 177                                 "porting::initializePathsAndroid unable to find Java getCachePath method");
 178                 jobject result = jnienv->CallObjectMethod(app_global->activity->clazz, getCachePath);
 179                 const char *javachars = jnienv->GetStringUTFChars((jstring) result, nullptr);
 180                 path_cache = javachars;
 181                 jnienv->ReleaseStringUTFChars((jstring) result, javachars);
 182
 183                 migrateCachePath();
 184         }
 185 }
 186
 187 void showInputDialog(const std::string &acceptButton, const std::string &hint,
 188                 const std::string &current, int editType)
 189 {
 190         jmethodID showdialog = jnienv->GetMethodID(nativeActivity, "showDialog",
 191                 "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;I)V");
 192
 193         FATAL_ERROR_IF(showdialog == nullptr,
 194                 "porting::showInputDialog unable to find java show dialog method");
 195
 196         jstring jacceptButton = jnienv->NewStringUTF(acceptButton.c_str());
 197         jstring jhint         = jnienv->NewStringUTF(hint.c_str());
 198         jstring jcurrent      = jnienv->NewStringUTF(current.c_str());
 199         jint    jeditType     = editType;
 200
 201         jnienv->CallVoidMethod(app_global->activity->clazz, showdialog,
 202                         jacceptButton, jhint, jcurrent, jeditType);
 203 }
 204
 205 void openURIAndroid(const std::string &url)
 206 {
 207         jmethodID url_open = jnienv->GetMethodID(nativeActivity, "openURI",
 208                 "(Ljava/lang/String;)V");
 209
 210         FATAL_ERROR_IF(url_open == nullptr,
 211                 "porting::openURIAndroid unable to find java openURI method");
 212
 213         jstring jurl = jnienv->NewStringUTF(url.c_str());
 214         jnienv->CallVoidMethod(app_global->activity->clazz, url_open, jurl);
 215 }
 216
 217 void shareFileAndroid(const std::string &path)
 218 {
 219         jmethodID url_open = jnienv->GetMethodID(nativeActivity, "shareFile",
 220                         "(Ljava/lang/String;)V");
 221
 222         FATAL_ERROR_IF(url_open == nullptr,
 223                         "porting::shareFileAndroid unable to find java openURI method");
 224
 225         jstring jurl = jnienv->NewStringUTF(path.c_str());
 226         jnienv->CallVoidMethod(app_global->activity->clazz, url_open, jurl);
 227 }
 228
 229 int getInputDialogState()
 230 {
 231         jmethodID dialogstate = jnienv->GetMethodID(nativeActivity,
 232                         "getDialogState", "()I");
 233
 234         FATAL_ERROR_IF(dialogstate == nullptr,
 235                 "porting::getInputDialogState unable to find java dialog state method");
 236
 237         return jnienv->CallIntMethod(app_global->activity->clazz, dialogstate);
 238 }
 239
 240 std::string getInputDialogValue()
 241 {
 242         jmethodID dialogvalue = jnienv->GetMethodID(nativeActivity,
 243                         "getDialogValue", "()Ljava/lang/String;");
 244
 245         FATAL_ERROR_IF(dialogvalue == nullptr,
 246                 "porting::getInputDialogValue unable to find java dialog value method");
 247
 248         jobject result = jnienv->CallObjectMethod(app_global->activity->clazz,
 249                         dialogvalue);
 250
 251         const char *javachars = jnienv->GetStringUTFChars((jstring) result, nullptr);
 252         std::string text(javachars);
 253         jnienv->ReleaseStringUTFChars((jstring) result, javachars);
 254
 255         return text;
 256 }
 257
 258 #ifndef SERVER
 259 float getDisplayDensity()
 260 {
 261         static bool firstrun = true;
 262         static float value = 0;
 263
 264         if (firstrun) {
 265                 jmethodID getDensity = jnienv->GetMethodID(nativeActivity,
 266                                 "getDensity", "()F");
 267
 268                 FATAL_ERROR_IF(getDensity == nullptr,
 269                         "porting::getDisplayDensity unable to find java getDensity method");
 270
 271                 value = jnienv->CallFloatMethod(app_global->activity->clazz, getDensity);
 272                 firstrun = false;
 273         }
 274         return value;
 275 }
 276
 277 v2u32 getDisplaySize()
 278 {
 279         static bool firstrun = true;
 280         static v2u32 retval;
 281
 282         if (firstrun) {
 283                 jmethodID getDisplayWidth = jnienv->GetMethodID(nativeActivity,
 284                                 "getDisplayWidth", "()I");
 285
 286                 FATAL_ERROR_IF(getDisplayWidth == nullptr,
 287                         "porting::getDisplayWidth unable to find java getDisplayWidth method");
 288
 289                 retval.X = jnienv->CallIntMethod(app_global->activity->clazz,
 290                                 getDisplayWidth);
 291
 292                 jmethodID getDisplayHeight = jnienv->GetMethodID(nativeActivity,
 293                                 "getDisplayHeight", "()I");
 294
 295                 FATAL_ERROR_IF(getDisplayHeight == nullptr,
 296                         "porting::getDisplayHeight unable to find java getDisplayHeight method");
 297
 298                 retval.Y = jnienv->CallIntMethod(app_global->activity->clazz,
 299                                 getDisplayHeight);
 300
 301                 firstrun = false;
 302         }
 303         return retval;
 304 }
 305 #endif // ndef SERVER
 306 }