This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
app-android.cpp
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/*******************************************************************************
Headers
*******************************************************************************/
#include <jni.h>
#include <sys/time.h>
#include <time.h>
#include <android/log.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <pthread.h>
#include "importgl.h"
#include "egl.h"
/*******************************************************************************
Globals
*******************************************************************************/
static long _getTime(void){
struct timeval now;
gettimeofday(&now, NULL);
return (long)(now.tv_sec*1000 + now.tv_usec/1000);
}
JNIEnv* mEnv = NULL;
JavaVM* mVM = NULL;
//Main activity
jclass mActivityInstance;
//method signatures
jmethodID midCreateGLContext;
jmethodID midFlipBuffers;
extern "C" int SDL_main();
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extern "C" int Android_OnKeyDown(int keycode);
extern "C" int Android_OnKeyUp(int keycode);
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extern "C" void Android_SetScreenResolution(int width, int height);
extern "C" void Android_OnResize(int width, int height, int format);
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extern "C" int SDL_SendQuit();
//If we're not the active app, don't try to render
bool bRenderingEnabled = false;
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/*******************************************************************************
Functions called by JNI
*******************************************************************************/
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//Library init
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extern "C" jint JNI_OnLoad(JavaVM* vm, void* reserved){
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JNIEnv* env = NULL;
jint result = -1;
if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) {
return result;
}
mEnv = env;
__android_log_print(ANDROID_LOG_INFO, "SDL", "JNI: OnLoad");
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jclass cls = mEnv->FindClass ("org/libsdl/android/SDLActivity");
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mActivityInstance = cls;
midCreateGLContext = mEnv->GetStaticMethodID(cls,"createGLContext","()V");
midFlipBuffers = mEnv->GetStaticMethodID(cls,"flipBuffers","()V");
if(!midCreateGLContext || !midFlipBuffers){
__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Bad mids\n");
}else{
__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Good mids\n");
}
return JNI_VERSION_1_4;
}
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//Start up the SDL app
extern "C" void Java_org_libsdl_android_SDLActivity_nativeInit( JNIEnv* env,
jobject obj ){
__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Native Init");
mEnv = env;
bRenderingEnabled = true;
SDL_main();
}
//Keydown
extern "C" void Java_org_libsdl_android_SDLActivity_onNativeKeyDown(JNIEnv* env,
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jobject obj, jint keycode){
int r = Android_OnKeyDown(keycode);
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__android_log_print(ANDROID_LOG_INFO, "SDL",
"SDL: native key down %d, %d\n", keycode, r);
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//Keyup
extern "C" void Java_org_libsdl_android_SDLActivity_onNativeKeyUp(JNIEnv* env,
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jobject obj, jint keycode){
int r = Android_OnKeyUp(keycode);
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__android_log_print(ANDROID_LOG_INFO, "SDL",
"SDL: native key up %d, %d\n", keycode, r);
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}
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//Touch
extern "C" void Java_org_libsdl_android_SDLActivity_onNativeTouch(JNIEnv* env,
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jobject obj, jint action, jfloat x, jfloat y, jfloat p){
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__android_log_print(ANDROID_LOG_INFO, "SDL",
"SDL: native touch event %d @ %f/%f, pressure %f\n",
action, x, y, p);
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//TODO: Pass this off to the SDL multitouch stuff
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extern "C" void Java_org_libsdl_android_SDLActivity_nativeQuit( JNIEnv* env,
jobject obj ){
//Stop rendering as we're no longer in the foreground
bRenderingEnabled = false;
//Inject a SDL_QUIT event
int r = SDL_SendQuit();
__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Native quit %d", r);
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//Screen size
extern "C" void Java_org_libsdl_android_SDLActivity_nativeSetScreenSize(
JNIEnv* env, jobject obj, jint width, jint height){
__android_log_print(ANDROID_LOG_INFO, "SDL",
"SDL: Set screen size on init: %d/%d\n", width, height);
Android_SetScreenResolution(width, height);
}
//Resize
extern "C" void Java_org_libsdl_android_SDLActivity_onNativeResize(
JNIEnv* env, jobject obj, jint width,
jint height, jint format){
Android_OnResize(width, height, format);
}
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/*******************************************************************************
Functions called by SDL
*******************************************************************************/
extern "C" void sdl_create_context(){
__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: sdl_create_context()\n");
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bRenderingEnabled = true;
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mEnv->CallStaticVoidMethod(mActivityInstance, midCreateGLContext );
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}
extern "C" void sdl_render(){
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if(!bRenderingEnabled){
return;
}
//When we get here, we've accumulated a full frame
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mEnv->CallStaticVoidMethod(mActivityInstance, midFlipBuffers );
}