涼しい３連休のおかげで、今までの成果物をまとめてAndroidに移植しました。今回は、ソースコードのみのリリースですので、Android版のビルド方法です。
http://www.geocities.jp/parallel_computer_inc/android.html
例によってSDLのサイトから、android-project.zipをダウンロードします。
http://www.libsdl.org/tmp/android-project.zip
SDLはサウンドのためだけに使うので、GLES2を無効（#define SDL_VIDEO_RENDER_OGL_ES2 0）とします。あと、１箇所コンパイルエラーになるので追記（#define SDL_ATOMIC_DISABLED 1）します。
（省略） /* Enable OpenGL ES */ #define SDL_VIDEO_OPENGL_ES 1 #define SDL_VIDEO_RENDER_OGL_ES 1 #define SDL_VIDEO_RENDER_OGL_ES2 0 （省略）
SDL_spinlock.c
（省略） #include "SDL_stdinc.h" #include "SDL_atomic.h" #include "SDL_mutex.h" #include "SDL_timer.h" #define SDL_ATOMIC_DISABLED 1 （省略）
以下のソースが肝なのですが、C++からJNIを使ってJavaでサウンドを鳴らします。
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2011 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_stdinc.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; static JavaVM* s_javaVM = 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) { __android_log_print(ANDROID_LOG_INFO, "Qt", "JNI_OnLoad()"); JNIEnv* env; if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_4) != JNI_OK) { __android_log_print(ANDROID_LOG_INFO, "SDL", "Can't get the enviroument"); return -1; } s_javaVM = vm; // search for our class jclass clazz=env->FindClass("org/kde/necessitas/origo/QtActivity"); if (!clazz) { __android_log_print(ANDROID_LOG_INFO, "SDL", "Can't find QtActivity class"); return -1; } mActivityClass = (jclass)env->NewGlobalRef(clazz); /// 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","(II)Z"); /// midFlipBuffers = mEnv->GetStaticMethodID(mActivityClass, /// "flipBuffers","()V"); /// midAudioInit = mEnv->GetStaticMethodID(mActivityClass, /// "audioInit", "(IZZI)Ljava/lang/Object;"); midAudioInit = env->GetStaticMethodID(mActivityClass, "audioInit", "(IZZI)Ljava/lang/Object;"); /// midAudioWriteShortBuffer = mEnv->GetStaticMethodID(mActivityClass, /// "audioWriteShortBuffer", "([S)V"); midAudioWriteShortBuffer = env->GetStaticMethodID(mActivityClass, "audioWriteShortBuffer", "([S)V"); /// midAudioWriteByteBuffer = mEnv->GetStaticMethodID(mActivityClass, /// "audioWriteByteBuffer", "([B)V"); midAudioWriteByteBuffer = env->GetStaticMethodID(mActivityClass, "audioWriteByteBuffer", "([B)V"); /// midAudioQuit = mEnv->GetStaticMethodID(mActivityClass, /// "audioQuit", "()V"); midAudioQuit = env->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"); /// } if(!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"); } __android_log_print(ANDROID_LOG_INFO, "Qt", "JNI_VERSION_1_4"); return JNI_VERSION_1_4; } // 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(); } extern "C" void Java_org_kde_necessitas_origo_QtActivity_nativeRunAudioThread( JNIEnv* env, jclass cls) { __android_log_print(ANDROID_LOG_VERBOSE, "Qt", "Android_RunAudioThread()"); /* This is the audio thread, with a different environment */ mAudioEnv = env; Android_RunAudioThread(); } /******************************************************************************* Functions called by SDL into Java *******************************************************************************/ extern "C" SDL_bool Android_JNI_CreateContext(int majorVersion, int minorVersion) { /// if (mEnv->CallStaticBooleanMethod(mActivityClass, midCreateGLContext, majorVersion, minorVersion)) { /// return SDL_TRUE; /// } else { return SDL_FALSE; /// } } 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, "Qt", "SDL audio: opening device"); audioBuffer16Bit = is16Bit; audioBufferStereo = channelCount > 1; /// audioBuffer = mEnv->CallStaticObjectMethod(mActivityClass, midAudioInit, sampleRate, audioBuffer16Bit, audioBufferStereo, desiredBufferFrames); JNIEnv* env; if (s_javaVM->AttachCurrentThread(&env, NULL) < 0) { __android_log_print(ANDROID_LOG_VERBOSE, "Qt", "AttachCurrentThread failed"); return 0; } audioBuffer = env->CallStaticObjectMethod(mActivityClass, midAudioInit, sampleRate, audioBuffer16Bit, audioBufferStereo, desiredBufferFrames); if (audioBuffer == NULL) { __android_log_print(ANDROID_LOG_WARN, "Qt", "SDL audio: didn't get back a good audio buffer!"); return 0; } /// audioBuffer = mEnv->NewGlobalRef(audioBuffer); audioBuffer = env->NewGlobalRef(audioBuffer); jboolean isCopy = JNI_FALSE; if (audioBuffer16Bit) { /// audioBufferPinned = mEnv->GetShortArrayElements((jshortArray)audioBuffer, &isCopy); /// audioBufferFrames = mEnv->GetArrayLength((jshortArray)audioBuffer); audioBufferPinned = env->GetShortArrayElements((jshortArray)audioBuffer, &isCopy); audioBufferFrames = env->GetArrayLength((jshortArray)audioBuffer); } else { /// audioBufferPinned = mEnv->GetByteArrayElements((jbyteArray)audioBuffer, &isCopy); /// audioBufferFrames = mEnv->GetArrayLength((jbyteArray)audioBuffer); audioBufferPinned = env->GetByteArrayElements((jbyteArray)audioBuffer, &isCopy); audioBufferFrames = env->GetArrayLength((jbyteArray)audioBuffer); } if (audioBufferStereo) { audioBufferFrames /= 2; } s_javaVM->DetachCurrentThread(); return audioBufferFrames; } extern "C" void * Android_JNI_GetAudioBuffer() { __android_log_print(ANDROID_LOG_VERBOSE, "Qt", " 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 { __android_log_print(ANDROID_LOG_VERBOSE, "Qt", "Android_JNI_WriteAudioBuffer()"); 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() { __android_log_print(ANDROID_LOG_VERBOSE, "Qt", "Android_JNI_CloseAudioDevice()"); JNIEnv* env; if (s_javaVM->AttachCurrentThread(&env, NULL) < 0) { __android_log_print(ANDROID_LOG_VERBOSE, "SDL", "AttachCurrentThread failed"); return; } /// mEnv->CallStaticVoidMethod(mActivityClass, midAudioQuit); env->CallStaticVoidMethod(mActivityClass, midAudioQuit); if (audioBuffer) { /// mEnv->DeleteGlobalRef(audioBuffer); env->DeleteGlobalRef(audioBuffer); audioBuffer = NULL; audioBufferPinned = NULL; } s_javaVM->DetachCurrentThread(); }
まずは、以下からsource.zipをダウンロードして、以下のフォルダ構成になります。
http://homepage3.nifty.com/takeda-toshiya/common/index.html
＋source ←和製MESSを解凍して、以下のファイルのみ差し替える GAMEGEAR.pro MSX1.pro PC6001.pro ＋include windows.h tchar.h ＋src config.cpp config.h emu.cpp ← Win32版をバックアップしてemu.cpp_qtをリネーム emu.h ← Win32版をバックアップしてemu.h_qtをリネーム fileio.cpp qt_input.cpp qt_screen.cpp qt_sound.cpp qtmain.cpp winmain.cpp ＋SDL ← android-project.zipからコピー ＋res gamegear.rc gamegear.ico ← Win32版で使います msx1.rc msx1.ico ← Win32版で使います pc6001.rc pc6001.ico ← Win32版で使います resource.h ＋vm 315-5124.cpp 315-5124.h datarec.cpp datarec.h i8255.cpp i8255.h sn76489an.cpp sn76489an.h vm.h ＋fmgen file.cpp ＋gamegear ← yaGG本体 ＋msx1 ← yaMSX1本体 ＋pc6001 ← yaP6本体
準備が出来たら、プロジェクトファイル（GAMEGEAR.pro など）をQt Creatorで開きます。「Necessitas Qt 4.8.2 for Android armv5」でプロジェクトを構成します。以下のサイトを参考にビルド および デプロイしてみてください。
http://vivi.dyndns.org/tech/Qt/Necessitas.html
不明な点はTwitterなどでお問い合わせください。
