minetest/src/porting_android.cpp

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/*
Minetest
Copyright (C) 2014 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ANDROID__
#error This file may only be compiled for android!
#endif
#include "util/numeric.h"
#include "porting.h"
#include "porting_android.h"
#include "threading/thread.h"
#include "config.h"
#include "filesys.h"
#include "log.h"
#include <sstream>
#include <exception>
#include <cstdlib>
#ifdef GPROF
#include "prof.h"
#endif
extern int main(int argc, char *argv[]);
void android_main(android_app *app)
{
int retval = 0;
porting::app_global = app;
Thread::setName("Main");
char *argv[] = {strdup(PROJECT_NAME), strdup("--verbose"), nullptr};
try {
main(ARRLEN(argv) - 1, argv);
} catch (std::exception &e) {
errorstream << "Uncaught exception in main thread: " << e.what() << std::endl;
retval = -1;
} catch (...) {
errorstream << "Uncaught exception in main thread!" << std::endl;
retval = -1;
}
free(argv[0]);
free(argv[1]);
porting::cleanupAndroid();
infostream << "Shutting down." << std::endl;
exit(retval);
}
namespace porting {
android_app *app_global;
JNIEnv *jnienv;
jclass nativeActivity;
jclass findClass(const std::string &classname)
{
if (jnienv == nullptr)
return nullptr;
jclass nativeactivity = jnienv->FindClass("android/app/NativeActivity");
jmethodID getClassLoader = jnienv->GetMethodID(
nativeactivity, "getClassLoader", "()Ljava/lang/ClassLoader;");
jobject cls = jnienv->CallObjectMethod(
app_global->activity->clazz, getClassLoader);
jclass classLoader = jnienv->FindClass("java/lang/ClassLoader");
jmethodID findClass = jnienv->GetMethodID(classLoader, "loadClass",
"(Ljava/lang/String;)Ljava/lang/Class;");
jstring strClassName = jnienv->NewStringUTF(classname.c_str());
return (jclass) jnienv->CallObjectMethod(cls, findClass, strClassName);
}
void initAndroid()
{
porting::jnienv = nullptr;
JavaVM *jvm = app_global->activity->vm;
JavaVMAttachArgs lJavaVMAttachArgs;
lJavaVMAttachArgs.version = JNI_VERSION_1_6;
lJavaVMAttachArgs.name = PROJECT_NAME_C "NativeThread";
lJavaVMAttachArgs.group = nullptr;
if (jvm->AttachCurrentThread(&porting::jnienv, &lJavaVMAttachArgs) == JNI_ERR) {
errorstream << "Failed to attach native thread to jvm" << std::endl;
exit(-1);
}
nativeActivity = findClass("net/minetest/minetest/GameActivity");
if (nativeActivity == nullptr)
errorstream <<
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"porting::initAndroid unable to find Java native activity class" <<
std::endl;
#ifdef GPROF
// in the start-up code
__android_log_print(ANDROID_LOG_ERROR, PROJECT_NAME_C,
"Initializing GPROF profiler");
monstartup("libMinetest.so");
#endif
}
void cleanupAndroid()
{
#ifdef GPROF
errorstream << "Shutting down GPROF profiler" << std::endl;
setenv("CPUPROFILE", (path_user + DIR_DELIM + "gmon.out").c_str(), 1);
moncleanup();
#endif
JavaVM *jvm = app_global->activity->vm;
jvm->DetachCurrentThread();
}
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static std::string readJavaString(jstring j_str)
{
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// Get string as a UTF-8 C string
const char *c_str = jnienv->GetStringUTFChars(j_str, nullptr);
// Save it
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std::string str(c_str);
// And free the C string
jnienv->ReleaseStringUTFChars(j_str, c_str);
return str;
}
void initializePathsAndroid()
{
// Set user and share paths
{
jmethodID getUserDataPath = jnienv->GetMethodID(nativeActivity,
"getUserDataPath", "()Ljava/lang/String;");
FATAL_ERROR_IF(getUserDataPath==nullptr,
"porting::initializePathsAndroid unable to find Java getUserDataPath method");
jobject result = jnienv->CallObjectMethod(app_global->activity->clazz, getUserDataPath);
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std::string str = readJavaString((jstring) result);
path_user = str;
path_share = str;
path_locale = str + DIR_DELIM + "locale";
}
// Set cache path
{
jmethodID getCachePath = jnienv->GetMethodID(nativeActivity,
"getCachePath", "()Ljava/lang/String;");
FATAL_ERROR_IF(getCachePath==nullptr,
"porting::initializePathsAndroid unable to find Java getCachePath method");
jobject result = jnienv->CallObjectMethod(app_global->activity->clazz, getCachePath);
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path_cache = readJavaString((jstring) result);
migrateCachePath();
}
}
void showInputDialog(const std::string &acceptButton, const std::string &hint,
const std::string &current, int editType)
{
jmethodID showdialog = jnienv->GetMethodID(nativeActivity, "showDialog",
"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;I)V");
FATAL_ERROR_IF(showdialog == nullptr,
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"porting::showInputDialog unable to find Java showDialog method");
jstring jacceptButton = jnienv->NewStringUTF(acceptButton.c_str());
jstring jhint = jnienv->NewStringUTF(hint.c_str());
jstring jcurrent = jnienv->NewStringUTF(current.c_str());
jint jeditType = editType;
jnienv->CallVoidMethod(app_global->activity->clazz, showdialog,
jacceptButton, jhint, jcurrent, jeditType);
}
void openURIAndroid(const std::string &url)
{
jmethodID url_open = jnienv->GetMethodID(nativeActivity, "openURI",
"(Ljava/lang/String;)V");
FATAL_ERROR_IF(url_open == nullptr,
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"porting::openURIAndroid unable to find Java openURI method");
jstring jurl = jnienv->NewStringUTF(url.c_str());
jnienv->CallVoidMethod(app_global->activity->clazz, url_open, jurl);
}
void shareFileAndroid(const std::string &path)
{
jmethodID url_open = jnienv->GetMethodID(nativeActivity, "shareFile",
"(Ljava/lang/String;)V");
FATAL_ERROR_IF(url_open == nullptr,
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"porting::shareFileAndroid unable to find Java shareFile method");
jstring jurl = jnienv->NewStringUTF(path.c_str());
jnienv->CallVoidMethod(app_global->activity->clazz, url_open, jurl);
}
int getInputDialogState()
{
jmethodID dialogstate = jnienv->GetMethodID(nativeActivity,
"getDialogState", "()I");
FATAL_ERROR_IF(dialogstate == nullptr,
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"porting::getInputDialogState unable to find Java getDialogState method");
return jnienv->CallIntMethod(app_global->activity->clazz, dialogstate);
}
std::string getInputDialogValue()
{
jmethodID dialogvalue = jnienv->GetMethodID(nativeActivity,
"getDialogValue", "()Ljava/lang/String;");
FATAL_ERROR_IF(dialogvalue == nullptr,
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"porting::getInputDialogValue unable to find Java getDialogValue method");
jobject result = jnienv->CallObjectMethod(app_global->activity->clazz,
dialogvalue);
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return readJavaString((jstring) result);
}
#ifndef SERVER
float getDisplayDensity()
{
static bool firstrun = true;
static float value = 0;
if (firstrun) {
jmethodID getDensity = jnienv->GetMethodID(nativeActivity,
"getDensity", "()F");
FATAL_ERROR_IF(getDensity == nullptr,
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"porting::getDisplayDensity unable to find Java getDensity method");
value = jnienv->CallFloatMethod(app_global->activity->clazz, getDensity);
firstrun = false;
}
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return value;
}
v2u32 getDisplaySize()
{
static bool firstrun = true;
static v2u32 retval;
if (firstrun) {
jmethodID getDisplayWidth = jnienv->GetMethodID(nativeActivity,
"getDisplayWidth", "()I");
FATAL_ERROR_IF(getDisplayWidth == nullptr,
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"porting::getDisplayWidth unable to find Java getDisplayWidth method");
retval.X = jnienv->CallIntMethod(app_global->activity->clazz,
getDisplayWidth);
jmethodID getDisplayHeight = jnienv->GetMethodID(nativeActivity,
"getDisplayHeight", "()I");
FATAL_ERROR_IF(getDisplayHeight == nullptr,
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"porting::getDisplayHeight unable to find Java getDisplayHeight method");
retval.Y = jnienv->CallIntMethod(app_global->activity->clazz,
getDisplayHeight);
firstrun = false;
}
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return retval;
}
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std::string getLanguageAndroid()
{
jmethodID getLanguage = jnienv->GetMethodID(nativeActivity,
"getLanguage", "()Ljava/lang/String;");
FATAL_ERROR_IF(getLanguage == nullptr,
"porting::getLanguageAndroid unable to find Java getLanguage method");
jobject result = jnienv->CallObjectMethod(app_global->activity->clazz,
getLanguage);
return readJavaString((jstring) result);
}
#endif // ndef SERVER
}