--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/android/project/jni/android-support.cpp	Tue Aug 17 15:35:56 2010 +1200
@@ -0,0 +1,242 @@
+/*******************************************************************************
+ This file links the Java side of Android with libsdl
+*******************************************************************************/
+#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>
+
+#define DEBUG
+
+
+/*******************************************************************************
+                               Globals
+*******************************************************************************/
+static long _getTime(void){
+	struct timeval  now;
+	gettimeofday(&now, NULL);
+	return (long)(now.tv_sec*1000 + now.tv_usec/1000);
+}
+
+JNIEnv* mEnv = NULL;
+JNIEnv* mAudioThreadEnv = NULL; //See the note below for why this is necessary
+JavaVM* mVM = NULL;
+
+//Main activity
+jclass mActivityInstance;
+
+//method signatures
+jmethodID midCreateGLContext;
+jmethodID midFlipBuffers;
+jmethodID midEnableFeature;
+jmethodID midUpdateAudio;
+
+extern "C" int SDL_main();
+extern "C" int Android_OnKeyDown(int keycode);
+extern "C" int Android_OnKeyUp(int keycode);
+extern "C" void Android_SetScreenResolution(int width, int height);
+extern "C" void Android_OnResize(int width, int height, int format);
+extern "C" int SDL_SendQuit();
+extern "C" void Android_EnableFeature(int featureid, bool enabled);
+
+//If we're not the active app, don't try to render
+bool bRenderingEnabled = false;
+
+//Feature IDs
+static const int FEATURE_AUDIO = 1;
+static const int FEATURE_ACCEL = 2;
+
+//Accelerometer data storage
+float fLastAccelerometer[3];
+
+
+/*******************************************************************************
+                 Functions called by JNI
+*******************************************************************************/	
+
+//Library init
+extern "C" jint JNI_OnLoad(JavaVM* vm, void* reserved){
+
+    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");
+
+    jclass cls = mEnv->FindClass ("org/libsdl/app/SDLActivity"); 
+    mActivityInstance = cls;
+    midCreateGLContext = mEnv->GetStaticMethodID(cls,"createGLContext","()V");
+    midFlipBuffers = mEnv->GetStaticMethodID(cls,"flipBuffers","()V");
+    midEnableFeature = mEnv->GetStaticMethodID(cls,"enableFeature","(II)V");
+    midUpdateAudio = mEnv->GetStaticMethodID(cls,"updateAudio","([B)V");
+
+    if(!midCreateGLContext || !midFlipBuffers || !midEnableFeature ||
+        !midUpdateAudio){
+        __android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Bad mids\n");
+    }else{
+#ifdef DEBUG
+        __android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Good mids\n");
+#endif
+    }
+    
+    return JNI_VERSION_1_4;
+}
+
+//Start up the SDL app
+extern "C" void Java_org_libsdl_app_SDLActivity_nativeInit( JNIEnv* env, 
+                                                                jobject obj ){ 
+                                                                   
+	__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Native Init");
+
+	mEnv = env;
+	bRenderingEnabled = true;
+
+	Android_EnableFeature(FEATURE_ACCEL, true);
+
+    SDL_main();
+}
+
+//Keydown
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeKeyDown(JNIEnv* env, 
+               jobject obj, jint keycode){
+    
+    int r = Android_OnKeyDown(keycode);
+#ifdef DEBUG
+    __android_log_print(ANDROID_LOG_INFO, "SDL", 
+                        "SDL: native key down %d, %d\n", keycode, r);
+#endif
+                        
+}
+
+//Keyup
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeKeyUp(JNIEnv* env, 
+               jobject obj, jint keycode){
+    
+    int r = Android_OnKeyUp(keycode);
+#ifdef DEBUG
+    __android_log_print(ANDROID_LOG_INFO, "SDL", 
+                        "SDL: native key up %d, %d\n", keycode, r);
+#endif
+                        
+}
+
+//Touch
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeTouch(JNIEnv* env, 
+               jobject obj, jint action, jfloat x, jfloat y, jfloat p){
+
+#ifdef DEBUG
+    __android_log_print(ANDROID_LOG_INFO, "SDL", 
+                        "SDL: native touch event %d @ %f/%f, pressure %f\n", 
+                        action, x, y, p);
+#endif
+
+    //TODO: Pass this off to the SDL multitouch stuff
+                        
+}
+
+//Quit
+extern "C" void Java_org_libsdl_app_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);        
+}
+
+//Screen size
+extern "C" void Java_org_libsdl_app_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_app_SDLActivity_onNativeResize(
+                                        JNIEnv*  env, jobject obj, jint width, 
+                                        jint height, jint format){
+    Android_OnResize(width, height, format);
+}
+
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeAccel(
+                                        JNIEnv*  env, jobject obj,
+                                        jfloat x, jfloat y, jfloat z){
+    fLastAccelerometer[0] = x;
+    fLastAccelerometer[1] = y;
+    fLastAccelerometer[2] = z;   
+}
+
+
+
+/*******************************************************************************
+             Functions called by SDL into Java
+*******************************************************************************/
+extern "C" void Android_CreateContext(){
+	__android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: sdl_create_context()\n");
+
+	bRenderingEnabled = true;
+
+    mEnv->CallStaticVoidMethod(mActivityInstance, midCreateGLContext ); 
+}
+
+extern "C" void Android_Render(){
+
+    if(!bRenderingEnabled){
+        return;
+    }
+
+    //When we get here, we've accumulated a full frame    
+    mEnv->CallStaticVoidMethod(mActivityInstance, midFlipBuffers ); 
+}
+
+extern "C" void Android_EnableFeature(int featureid, bool enabled){
+
+    mEnv->CallStaticVoidMethod(mActivityInstance, midEnableFeature, 
+                                featureid, (int)enabled); 
+}
+
+extern "C" void Android_UpdateAudioBuffer(unsigned char *buf, int len){
+
+    //Annoyingly we can't just call into Java from any thread. Because the audio
+    //callback is dispatched from the SDL audio thread (that wasn't made from
+    //java, we have to do some magic here to let the JVM know about the thread.
+    //Because everything it touches on the Java side is static anyway, it's 
+    //not a big deal, just annoying.
+    if(!mAudioThreadEnv){
+        __android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: Need to set up audio thread env\n");
+
+        mVM->AttachCurrentThread(&mAudioThreadEnv, NULL);
+
+        __android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: ok\n");
+    }
+    
+    jbyteArray arr = mAudioThreadEnv->NewByteArray(len);
+
+    //blah. We probably should rework this so we avoid the copy. 
+    mAudioThreadEnv->SetByteArrayRegion(arr, 0, len, (jbyte *)buf);
+    
+    __android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: copied\n");
+
+    mAudioThreadEnv->CallStaticVoidMethod(  mActivityInstance, 
+                                            midUpdateAudio, arr );
+
+    __android_log_print(ANDROID_LOG_INFO, "SDL", "SDL: invoked\n");
+    
+}
+