--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/core/android/SDL_android.cpp	Mon Jan 24 21:20:30 2011 -0800
@@ -0,0 +1,258 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2010 Sam Lantinga
+
+    This library 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 library 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 library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#include "SDL_android.h"
+
+extern "C" {
+#include "events/SDL_events_c.h"
+#include "video/android/SDL_androidkeyboard.h"
+#include "video/android/SDL_androidtouch.h"
+#include "video/android/SDL_androidvideo.h"
+
+/* Impelemented in audio/android/SDL_androidaudio.c */
+extern void Android_RunAudioThread();
+} // C
+
+/*******************************************************************************
+ This file links the Java side of Android with libsdl
+*******************************************************************************/
+#include <jni.h>
+#include <android/log.h>
+
+
+/*******************************************************************************
+                               Globals
+*******************************************************************************/
+static JNIEnv* mEnv = NULL;
+static JNIEnv* mAudioEnv = NULL;
+
+// Main activity
+static jclass mActivityClass;
+
+// method signatures
+static jmethodID midCreateGLContext;
+static jmethodID midFlipBuffers;
+static jmethodID midAudioInit;
+static jmethodID midAudioWriteShortBuffer;
+static jmethodID midAudioWriteByteBuffer;
+static jmethodID midAudioQuit;
+
+// Accelerometer data storage
+static float fLastAccelerometer[3];
+
+
+/*******************************************************************************
+                 Functions called by JNI
+*******************************************************************************/
+
+// Library init
+extern "C" jint JNI_OnLoad(JavaVM* vm, void* reserved)
+{
+    return JNI_VERSION_1_4;
+}
+
+// Called before SDL_main() to initialize JNI bindings
+extern "C" void SDL_Android_Init(JNIEnv* env, jclass cls)
+{
+    __android_log_print(ANDROID_LOG_INFO, "SDL", "SDL_Android_Init()");
+
+    mEnv = env;
+    mActivityClass = cls;
+
+    midCreateGLContext = mEnv->GetStaticMethodID(mActivityClass,
+                                "createGLContext","()V");
+    midFlipBuffers = mEnv->GetStaticMethodID(mActivityClass,
+                                "flipBuffers","()V");
+    midAudioInit = mEnv->GetStaticMethodID(mActivityClass, 
+                                "audioInit", "(IZZI)Ljava/lang/Object;");
+    midAudioWriteShortBuffer = mEnv->GetStaticMethodID(mActivityClass,
+                                "audioWriteShortBuffer", "([S)V");
+    midAudioWriteByteBuffer = mEnv->GetStaticMethodID(mActivityClass,
+                                "audioWriteByteBuffer", "([B)V");
+    midAudioQuit = mEnv->GetStaticMethodID(mActivityClass,
+                                "audioQuit", "()V");
+
+    if(!midCreateGLContext || !midFlipBuffers || !midAudioInit ||
+       !midAudioWriteShortBuffer || !midAudioWriteByteBuffer || !midAudioQuit) {
+        __android_log_print(ANDROID_LOG_WARN, "SDL", "SDL: Couldn't locate Java callbacks, check that they're named and typed correctly");
+    }
+}
+
+// Resize
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeResize(
+                                    JNIEnv* env, jclass jcls,
+                                    jint width, jint height, jint format)
+{
+    Android_SetScreenResolution(width, height, format);
+}
+
+// Keydown
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeKeyDown(
+                                    JNIEnv* env, jclass jcls, jint keycode)
+{
+    Android_OnKeyDown(keycode);
+}
+
+// Keyup
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeKeyUp(
+                                    JNIEnv* env, jclass jcls, jint keycode)
+{
+    Android_OnKeyUp(keycode);
+}
+
+// Touch
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeTouch(
+                                    JNIEnv* env, jclass jcls,
+                                    jint action, jfloat x, jfloat y, jfloat p)
+{
+    Android_OnTouch(action, x, y, p);
+}
+
+// Accelerometer
+extern "C" void Java_org_libsdl_app_SDLActivity_onNativeAccel(
+                                    JNIEnv* env, jclass jcls,
+                                    jfloat x, jfloat y, jfloat z)
+{
+    fLastAccelerometer[0] = x;
+    fLastAccelerometer[1] = y;
+    fLastAccelerometer[2] = z;   
+}
+
+// Quit
+extern "C" void Java_org_libsdl_app_SDLActivity_nativeQuit(
+                                    JNIEnv* env, jclass cls)
+{    
+    // Inject a SDL_QUIT event
+    SDL_SendQuit();
+}
+
+extern "C" void Java_org_libsdl_app_SDLActivity_nativeRunAudioThread(
+                                    JNIEnv* env, jclass cls)
+{
+    /* This is the audio thread, with a different environment */
+    mAudioEnv = env;
+
+    Android_RunAudioThread();
+}
+
+
+/*******************************************************************************
+             Functions called by SDL into Java
+*******************************************************************************/
+extern "C" void Android_JNI_CreateContext()
+{
+    mEnv->CallStaticVoidMethod(mActivityClass, midCreateGLContext); 
+}
+
+extern "C" void Android_JNI_SwapWindow()
+{
+    mEnv->CallStaticVoidMethod(mActivityClass, midFlipBuffers); 
+}
+
+extern "C" void Android_JNI_SetActivityTitle(const char *title)
+{
+    jmethodID mid;
+
+    mid = mEnv->GetStaticMethodID(mActivityClass,"setActivityTitle","(Ljava/lang/String;)V");
+    if (mid) {
+        mEnv->CallStaticVoidMethod(mActivityClass, mid, mEnv->NewStringUTF(title));
+    }
+}
+
+extern "C" void Android_JNI_GetAccelerometerValues(float values[3])
+{
+    int i;
+    for (i = 0; i < 3; ++i) {
+        values[i] = fLastAccelerometer[i];
+    }
+}
+
+//
+// Audio support
+//
+static jboolean audioBuffer16Bit = JNI_FALSE;
+static jboolean audioBufferStereo = JNI_FALSE;
+static jobject audioBuffer = NULL;
+static void* audioBufferPinned = NULL;
+
+extern "C" int Android_JNI_OpenAudioDevice(int sampleRate, int is16Bit, int channelCount, int desiredBufferFrames)
+{
+    int audioBufferFrames;
+
+    __android_log_print(ANDROID_LOG_VERBOSE, "SDL", "SDL audio: opening device");
+    audioBuffer16Bit = is16Bit;
+    audioBufferStereo = channelCount > 1;
+
+    audioBuffer = mEnv->CallStaticObjectMethod(mActivityClass, midAudioInit, sampleRate, audioBuffer16Bit, audioBufferStereo, desiredBufferFrames);
+
+    if (audioBuffer == NULL) {
+        __android_log_print(ANDROID_LOG_WARN, "SDL", "SDL audio: didn't get back a good audio buffer!");
+        return 0;
+    }
+    audioBuffer = mEnv->NewGlobalRef(audioBuffer);
+
+    jboolean isCopy = JNI_FALSE;
+    if (audioBuffer16Bit) {
+        audioBufferPinned = mEnv->GetShortArrayElements((jshortArray)audioBuffer, &isCopy);
+        audioBufferFrames = mEnv->GetArrayLength((jshortArray)audioBuffer);
+    } else {
+        audioBufferPinned = mEnv->GetByteArrayElements((jbyteArray)audioBuffer, &isCopy);
+        audioBufferFrames = mEnv->GetArrayLength((jbyteArray)audioBuffer);
+    }
+    if (audioBufferStereo) {
+        audioBufferFrames /= 2;
+    }
+
+    return audioBufferFrames;
+}
+
+extern "C" void * Android_JNI_GetAudioBuffer()
+{
+    return audioBufferPinned;
+}
+
+extern "C" void Android_JNI_WriteAudioBuffer()
+{
+    if (audioBuffer16Bit) {
+        mAudioEnv->ReleaseShortArrayElements((jshortArray)audioBuffer, (jshort *)audioBufferPinned, JNI_COMMIT);
+        mAudioEnv->CallStaticVoidMethod(mActivityClass, midAudioWriteShortBuffer, (jshortArray)audioBuffer);
+    } else {
+        mAudioEnv->ReleaseByteArrayElements((jbyteArray)audioBuffer, (jbyte *)audioBufferPinned, JNI_COMMIT);
+        mAudioEnv->CallStaticVoidMethod(mActivityClass, midAudioWriteByteBuffer, (jbyteArray)audioBuffer);
+    }
+
+    /* JNI_COMMIT means the changes are committed to the VM but the buffer remains pinned */
+}
+
+extern "C" void Android_JNI_CloseAudioDevice()
+{
+    mEnv->CallStaticVoidMethod(mActivityClass, midAudioQuit); 
+
+    if (audioBuffer) {
+        mEnv->DeleteGlobalRef(audioBuffer);
+        audioBuffer = NULL;
+        audioBufferPinned = NULL;
+    }
+}
+
+/* vi: set ts=4 sw=4 expandtab: */