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Moved to NDK r4 and SDK 2.2, updated readme, still catching the crash in audio output with Android 2.2 - added lot of debug spam

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This commit is contained in:
pelya
2010-06-25 18:52:45 +03:00
parent ee1dde5745
commit 09388a7599
14 changed files with 153 additions and 55 deletions
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2
alienblaster/Application.mk
View File

@@ -1,2 +0,0 @@
APP_PROJECT_PATH := $(call my-dir)/project
APP_MODULES := application stlport sdl sdl_main sdl_mixer tremor sdl_image png jpeg sdl_ttf freetype

7
alienblaster/build.sh Executable file
View File

@@ -0,0 +1,7 @@
#!/bin/bash
# Set here your own NDK path if needed
export PATH=$PATH:~/src/endless_space/android-ndk-r4
cd project && ndk-build -j2 V=1 && ant debug && cd bin && adb install -r DemoActivity-debug.apk

6
alienblaster/project/AndroidManifest.xml
View File

@@ -3,7 +3,9 @@
package="de.schwardtnet.alienblaster"
android:versionCode="1"
android:versionName="1.0">
<application android:label="@string/app_name">
<application android:label="@string/app_name"
android:debuggable="true"
>
<activity android:name=".MainActivity"
android:label="@string/app_name"
android:screenOrientation="landscape"
@@ -14,7 +16,7 @@
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="4" />
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="8"/>
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

4
alienblaster/project/default.properties
View File

@@ -8,6 +8,4 @@
# project structure.
# Project target.
target=android-4
# Indicates whether an apk should be generated for each density.
split.density=false
target=android-8

17
alienblaster/project/jni/application/src/game.cpp
View File

@@ -74,13 +74,19 @@ int difficultyLevel;
float actBackgroundPos;
Game::Game() {
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 1");
videoserver = new Video();
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 2");
screen = 0;
screen = videoserver->init();
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 3");
settings = new Settings();
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 4");
intro = new Intro( screen );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 5");
setDifficulty = new SetDifficulty( screen );
menuArcadeMode = new MenuArcadeMode( screen );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 6");
pauseSprite = surfaceDB.loadSurface( FN_PAUSED );
youLoseSprite = surfaceDB.loadSurface( FN_YOU_LOSE );
@@ -92,6 +98,8 @@ Game::Game() {
bossAlarm = Mixer::mixer().loadSample( FN_SOUND_BOSS_ALARM, 60 );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 7");
fontTime = new Font( FN_FONT_NUMBERS_TIME );
fontSizeTime = fontTime->getCharWidth();
@@ -125,18 +133,27 @@ Game::Game() {
sonic1 = new Sonic();
sonic2 = new Sonic();
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 8");
background = new Background();
loadLevel( FN_LEVEL_ONE_PLAYER );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 9");
SDL_Surface *loadingSprite = surfaceDB.loadSurface( FN_LOADING );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 10");
SDL_Rect dest;
dest.x = (SCREEN_WIDTH - loadingSprite->w ) / 2;
dest.y = (SCREEN_HEIGHT - loadingSprite->h ) / 2;
dest.w = loadingSprite->w;
dest.h = loadingSprite->h;
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 11");
SDL_BlitSurface( loadingSprite, 0, screen, &dest );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 12");
SDL_Flip( screen );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 13");
initAllSurfaces();
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Game() 14");
}
Game::~Game(){

10
alienblaster/project/jni/application/src/intro.cpp
View File

@@ -31,15 +31,25 @@ using namespace std;
#include "infoscreen.h"
Intro::Intro( SDL_Surface *scr ) {
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 1");
screen = scr;
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 2");
introSprite = surfaceDB.loadSurface( FN_ALIENBLASTER_INTRO );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 3");
activeChoiceSprite = surfaceDB.loadSurface( FN_INTRO_SHOW_CHOICE );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 4");
font = new Font( FN_FONT_INTRO );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 5");
fontHighlighted = new Font( FN_FONT_INTRO_HIGHLIGHTED );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 6");
activeChoice = 0;
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 7");
choose = Mixer::mixer().loadSample( FN_SOUND_INTRO_CHOOSE, 100 );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 8");
confirm = Mixer::mixer().loadSample( FN_SOUND_INTRO_CONFIRM, 100 );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 9");
infoscreen = new Infoscreen( screen );
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Intro() 10");
}
Intro::~Intro() {}

5
alienblaster/project/jni/application/src/main.cpp
View File

@@ -25,10 +25,15 @@
using namespace std;
int main(int argc, char *argv[]) {
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "main() 0");
SDL_Init(0);
srand(0);
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "main() 1");
Game game;
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "main() 2");
game.run();
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "main() 3");
SDL_Quit();
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "main() 4");
return 0;
}

8
alienblaster/project/jni/application/src/mixer.cpp
View File

@@ -24,6 +24,7 @@ using namespace std;
#include <string>
#include <fstream>
#include <iostream>
#include <android/log.h>
Mixer * mixerInstance = NULL;
@@ -35,17 +36,22 @@ Mixer & Mixer::mixer()
}
Mixer::Mixer() {
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing audio");
if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
printf("Couldn't initialize SDL audio subsystem: %s\n", SDL_GetError());
__android_log_print(ANDROID_LOG_ERROR, "Alien Blaster", "Couldn't initialize SDL audio subsystem: %s", SDL_GetError());
exit(1);
}
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing audio 2");
mixChunks = MixChunks(0);
musics = Musics(0);
enabled = false;
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing audio 3");
initMixer();
lastUsedReservedChannel = 0;
reservedChannels = 0;
musicPlaying = MUSIC_NONE;
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing audio done");
}
Mixer::~Mixer() {
@@ -55,6 +61,7 @@ Mixer::~Mixer() {
}
void Mixer::initMixer() {
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing audio 4");
enabled = (Mix_OpenAudio(MIX_DEFAULT_FREQUENCY, MIX_DEFAULT_FORMAT, 1, 1024) >= 0);
if (enabled) {
Mix_AllocateChannels(MIXER_NUMBER_CHANNELS);
@@ -66,6 +73,7 @@ void Mixer::initMixer() {
fn2mus.clear();
playsOn.clear();
}
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing audio 5");
}
void Mixer::freeMixer() {

4
alienblaster/project/jni/application/src/video.cpp
View File

@@ -40,14 +40,17 @@ SDL_Surface *Video::init(){
// SDL initialisation
// -----------------------------------------------------
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing video");
fullscreen = false;
if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
printf("Couldn't initialize SDL video subsystem: %s\n", SDL_GetError());
__android_log_print(ANDROID_LOG_ERROR, "Alien Blaster", "Couldn't initialize SDL video subsystem: %s\n", SDL_GetError());
exit(1);
}
screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, BIT_DEPTH, SDL_DOUBLEBUF /* | SDL_FULLSCREEN */ );
if (!screen) {
printf("Couldn't set %dx%d, %dbit video mode: %s\n", SCREEN_WIDTH, SCREEN_HEIGHT, BIT_DEPTH, SDL_GetError());
__android_log_print(ANDROID_LOG_ERROR, "Alien Blaster", "Couldn't set %dx%d, %dbit video mode: %s\n", SCREEN_WIDTH, SCREEN_HEIGHT, BIT_DEPTH, SDL_GetError());
exit(2);
}
@@ -55,6 +58,7 @@ SDL_Surface *Video::init(){
SDL_WM_SetIcon(SDL_LoadBMP( FN_ALIENBLASTER_ICON.c_str() ), NULL);
SDL_ShowCursor(SDL_DISABLE);
__android_log_print(ANDROID_LOG_INFO, "Alien Blaster", "Initializing video done");
return screen;
}

7
alienblaster/project/jni/sdl/src/SDL_error.c
View File

@@ -26,6 +26,10 @@
#include "SDL_error.h"
#include "SDL_error_c.h"
#ifdef ANDROID
#include <android/log.h>
#endif
/* Routine to get the thread-specific error variable */
#if SDL_THREADS_DISABLED
/* !!! FIXME: what does this comment mean? Victim of Search and Replace? */
@@ -111,6 +115,9 @@ SDL_SetError(const char *fmt, ...)
#ifdef DEBUG_ERROR
fprintf(stderr, "SDL_SetError: %s\n", SDL_GetError());
#endif
#ifdef ANDROID
__android_log_print(ANDROID_LOG_ERROR, "libSDL", "SDL_SetError: %s", SDL_GetError());
#endif
}
/* This function has a bit more overhead than most error functions

44
alienblaster/project/jni/sdl/src/audio/android/SDL_androidaudio.c
View File

@@ -100,8 +100,8 @@ static Uint8 *ANDROIDAUD_GetAudioBuf(_THIS)
static int ANDROIDAUD_OpenAudio(_THIS, const char *devname, int iscapture)
{
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_OpenAudio: enter");
SDL_AudioSpec *audioFormat = &this->spec;
jboolean isCopy = JNI_TRUE;
int bytesPerSample;
JNIEnv * jniEnv = NULL;
@@ -129,32 +129,26 @@ static int ANDROIDAUD_OpenAudio(_THIS, const char *devname, int iscapture)
return (-1); // TODO: enable format conversion? Don't know how to do that in SDL
}
audioBufferJNI = (*jniEnv)->CallObjectMethod( jniEnv, JavaAudioThread, JavaInitAudio,
audioBufferSize = (*jniEnv)->CallIntMethod( jniEnv, JavaAudioThread, JavaInitAudio,
(jint)audioFormat->freq, (jint)audioFormat->channels,
(jint)(( bytesPerSample == 2 ) ? 1 : 0), (jint)audioFormat->size);
if( ! audioBufferJNI )
if( audioBufferSize == 0 )
{
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_OpenAudio(): failed to get audio buffer from JNI");
ANDROIDAUD_CloseAudio(this);
return(-1);
}
audioBufferJNI = (*jniEnv)->NewGlobalRef(jniEnv, audioBufferJNI);
audioBufferSize = (*jniEnv)->GetArrayLength(jniEnv, audioBufferJNI);
audioBuffer = (unsigned char *) (*jniEnv)->GetByteArrayElements(jniEnv, audioBufferJNI, &isCopy);
if( isCopy == JNI_TRUE )
__android_log_print(ANDROID_LOG_ERROR, "libSDL", "ANDROIDAUD_OpenAudio(): JNI returns a copy of byte array - no audio will be played");
/* We cannot call DetachCurrentThread() from main thread or we'll crash */
/* (*jniVM)->DetachCurrentThread(jniVM); */
audioFormat->samples = audioBufferSize / bytesPerSample / audioFormat->channels;
audioFormat->size = audioBufferSize;
SDL_memset(audioBuffer, audioFormat->silence, audioFormat->size);
SDL_CalculateAudioSpec(&this->spec);
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_OpenAudio: exit, audioBufferSize %d", audioBufferSize);
return(1);
}
@@ -190,12 +184,13 @@ static jmethodID JavaFillBuffer = NULL;
static void ANDROIDAUD_ThreadInit(_THIS)
{
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_ThreadInit: enter");
jclass JavaAudioThreadClass = NULL;
jmethodID JavaInitThread = NULL;
struct sched_param param;
jmethodID JavaGetBuffer = NULL;
jboolean isCopy = JNI_TRUE;
(*jniVM)->AttachCurrentThread(jniVM, &jniEnvPlaying, NULL);
JavaAudioThreadClass = (*jniEnvPlaying)->GetObjectClass(jniEnvPlaying, JavaAudioThread);
JavaFillBuffer = (*jniEnvPlaying)->GetMethodID(jniEnvPlaying, JavaAudioThreadClass, "fillBuffer", "()I");
@@ -203,6 +198,22 @@ static void ANDROIDAUD_ThreadInit(_THIS)
/* HACK: raise our own thread priority to max to get rid of "W/AudioFlinger: write blocked for 54 msecs" errors */
JavaInitThread = (*jniEnvPlaying)->GetMethodID(jniEnvPlaying, JavaAudioThreadClass, "initAudioThread", "()I");
(*jniEnvPlaying)->CallIntMethod( jniEnvPlaying, JavaAudioThread, JavaInitThread );
JavaGetBuffer = (*jniEnvPlaying)->GetMethodID(jniEnvPlaying, JavaAudioThreadClass, "getBuffer", "()[B");
audioBufferJNI = (*jniEnvPlaying)->CallObjectMethod( jniEnvPlaying, JavaAudioThread, JavaGetBuffer );
audioBufferJNI = (*jniEnvPlaying)->NewGlobalRef(jniEnvPlaying, audioBufferJNI);
audioBuffer = (unsigned char *) (*jniEnvPlaying)->GetByteArrayElements(jniEnvPlaying, audioBufferJNI, &isCopy);
if( !audioBuffer )
{
__android_log_print(ANDROID_LOG_ERROR, "libSDL", "ANDROIDAUD_PlayAudio() JNI::GetByteArrayElements() failed! we will crash now");
return;
}
if( isCopy == JNI_TRUE )
__android_log_print(ANDROID_LOG_ERROR, "libSDL", "ANDROIDAUD_OpenAudio(): JNI returns a copy of byte array - no audio will be played");
SDL_memset(audioBuffer, this->spec.silence, this->spec.size);
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_ThreadInit: exit, audioBuffer %p", audioBuffer);
};
static void ANDROIDAUD_ThreadDeinit(_THIS)
@@ -212,18 +223,23 @@ static void ANDROIDAUD_ThreadDeinit(_THIS)
static void ANDROIDAUD_PlayAudio(_THIS)
{
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_PlayAudio: enter, audiobuffer %p", audioBuffer);
jboolean isCopy = JNI_TRUE;
(*jniEnvPlaying)->ReleaseByteArrayElements(jniEnvPlaying, audioBufferJNI, (jbyte *)audioBuffer, 0);
audioBuffer = NULL;
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_PlayAudio: before JavaFillBuffer");
(*jniEnvPlaying)->CallIntMethod( jniEnvPlaying, JavaAudioThread, JavaFillBuffer );
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_PlayAudio: after JavaFillBuffer");
audioBuffer = (unsigned char *) (*jniEnvPlaying)->GetByteArrayElements(jniEnvPlaying, audioBufferJNI, &isCopy);
if( !audioBuffer )
__android_log_print(ANDROID_LOG_ERROR, "libSDL", "ANDROIDAUD_PlayAudio() JNI::GetByteArrayElements() failed! we will crash now");
if( isCopy == JNI_TRUE )
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_PlayAudio() JNI returns a copy of byte array - that's slow");
__android_log_print(ANDROID_LOG_INFO, "libSDL", "ANDROIDAUD_PlayAudio: exit audioBuffer %p", audioBuffer);
}
#ifndef SDL_JAVA_PACKAGE_PATH
@@ -238,7 +254,7 @@ JNIEXPORT jint JNICALL JAVA_EXPORT_NAME(AudioThread_nativeAudioInitJavaCallbacks
jclass JavaAudioThreadClass = NULL;
JavaAudioThread = (*jniEnv)->NewGlobalRef(jniEnv, thiz);
JavaAudioThreadClass = (*jniEnv)->GetObjectClass(jniEnv, JavaAudioThread);
JavaInitAudio = (*jniEnv)->GetMethodID(jniEnv, JavaAudioThreadClass, "initAudio", "(IIII)[B");
JavaInitAudio = (*jniEnv)->GetMethodID(jniEnv, JavaAudioThreadClass, "initAudio", "(IIII)I");
JavaDeinitAudio = (*jniEnv)->GetMethodID(jniEnv, JavaAudioThreadClass, "deinitAudio", "()I");
/*
__android_log_print(ANDROID_LOG_INFO, "libSDL", "nativeAudioInitJavaCallbacks(): JavaAudioThread %p JavaFillBuffer %p JavaInitAudio %p JavaDeinitAudio %p",

5
alienblaster/project/jni/sdl_main/sdl_main.c
View File

@@ -28,6 +28,11 @@ JAVA_EXPORT_NAME(DemoRenderer_nativeInit) ( JNIEnv* env, jobject thiz )
int argc = 1;
char * argv[] = { "sdl" };
chdir(SDL_CURDIR_PATH);
/*
__android_log_print(ANDROID_LOG_INFO, "libSDL", "Waiting 30s for debugger");
sleep(30); // Wait for debugger to attach
__android_log_print(ANDROID_LOG_INFO, "libSDL", "Starting main()");
*/
main( argc, argv );
};

18
alienblaster/project/src/Audio.java
View File

@@ -34,11 +34,18 @@ class AudioThread {
public int fillBuffer()
{
mAudio.write( mAudioBuffer, 0, mAudioBuffer.length );
Log.i("libSDL", "JNI: fillBuffer() enter, mAudioBuffer len " + String.valueOf(mAudioBuffer.length));
int ret = 0;
try{
ret = mAudio.write( mAudioBuffer, 0, mAudioBuffer.length );
} catch( Throwable t ) {
Log.i("libSDL", "JNI: fillBuffer() caught exception!");
}
Log.i("libSDL", "JNI: fillBuffer() exit, written " + String.valueOf(ret));
return 1;
}
public byte[] initAudio(int rate, int channels, int encoding, int bufSize)
public int initAudio(int rate, int channels, int encoding, int bufSize)
{
if( mAudio == null )
{
@@ -60,7 +67,12 @@ class AudioThread {
AudioTrack.MODE_STREAM );
mAudio.play();
}
return mAudioBuffer;
return mAudioBuffer.length;
}
public byte[] getBuffer()
{
return mAudioBuffer;
}
public int deinitAudio()

71
alienblaster/readme.txt
View File

@@ -3,29 +3,25 @@ I did not change anything in Alien Blaster sources, except for SCREEN_WIDTH,
SCREEN_HEIGHT and BIT_DEPTH constants in global.h, to support 320x480x16bpp video mode,
and also made audio initialize after main() has been called, not inside static initializers.
This should be compiled with Android 1.6 SDK and NDK - google for them and install them as described in their docs.
You'll need to install Ant too
Then symlink this dir to <android-ndk>/apps under the name "alienblaster":
ln -s `pwd` <android-ndk>/apps/alienblaster
Then go to <android-ndk> dir and execute:
make APP=alienblaster V=1
Hopefully it will compile a bunch of libs under project/libs/armeabi
Then you'll have to compile Android .apk package with Java wrapper code for this lib:
Go to "project" directory and type
This should be compiled with Android 2.2 SDK and NDK r4 - google for them and install them as described in their docs
(the application will run on Android 1.6 and above, 2.2 is the first version where you can debug it).
You'll need to install Ant too.
Go to "project" directory and launch command
android update project -p .
ant debug
That will create file project/bin/DemoActivity-debug.apk - use "adb install" to test it
Then go back, edit file build.sh if needed to add NDK dir to your PATH, then launch it.
Hopefully it will compile a bunch of libs under project/libs/armeabi,
create file project/bin/DemoActivity-debug.apk and install it on your device or emulator.
Then you can test it by launching Alien Blaster icon from Android applications menu.
It's designed for 640x480, and GUI elements are drawn out of place, but you can play the game.
Note: The game enforces vertical screen orientation, but you may open your keyboard and use it for
It's designed for 640x480, so if you have smaller screen it will be resized.
Note: The game enforces horizontal screen orientation, you may open your keyboard and use it for
additional keys - the phone will just keep current screen orientation.
Fire key is Call key ( = left Ctrl for SDL ), Change weapon is Menu key ( = left Alt for SDL )
Note that you may use Volume up/down and Camera keys as game inputs -
you'll have to redefine them in game keyconfig menu.
Other keys like Home, Search and End Call will force application quit, and because
the app itself does not handle SDL_QUIT event correctly (asks for confirmation),
it will stay in memory until you reboot device (actually it won't stay in memory - it will crash :P ).
To exit correctly press Menu key - it's redirected to Escape.
Keys Home, Search and End Call will force application quit, and because
of a bug in my SDL implementation application will crash.
Back key is mapped to Escape, and both Menu and cursor keys center / trackball click are mapped to Enter.
Newer Android phones like HTC Evo have no keyboard at all, so there are just 3 usable keys -
Menu, Volume Up and Volume Down. Because of that the accelerometer is configured to trigger cursor key events.
This port also supports GL ES + SDL combo - there is GLXGears demo app in project/jni/application/glxgears,
remove all files from project/jni/application/src and put glxgears.c there to check if it works.
@@ -33,32 +29,45 @@ Note that GL ES is NOT pure OpenGL - there are no glBegin() and glEnd() call and
and generally it will take a lot of effort to port pure OpenGL application to GL ES.
When porting you own app, first of all ensure that your application supports
one of 320x200, 320x240 or 480x320 display resolutions and 16 bits per pixel
(480x320 is native resolution for G1, Supersonic has 800x480).
Also there is 640x480 mode, but it's very slow on G1 to copy from memory surface (2 FPS max).
SDL_ListModes()[0] will always return native screen resolution, other modes are there for compatibility.
native RGB_565 pixel format and AUDIO_S8 or AUDIO_S16 audio format
(yes, there is RGB_565 pixelformat even for OpenGL, not BGR_565 as all other OpenGL implementation have).
HTC G1/Nexus One has native screen resolution 480x320, HTC Evo has 800x480, so design your app to support
any screen resolution.
SDL_ListModes()[0] will always return native screen resolution, you may use 640x480 or 800x600
but it will be resized to fit the screen.
To compile your own app, put your app sources into project/jni/application dir (remove Alien Blaster first),
and launch script ChangeAppSettings.sh - it will put the name of your app in several places in sources.
The C++ files shall have .cpp extension to be compiled.
Then repeat steps:
make APP=alienblaster V=1
ant debug
The C++ files shall have .cpp extension to be compiled, rename them if necessary.
Then you should launch script ChangeAppSettings.sh - it will ask you few questions,
and change several values across project files.
Then you can launch build.sh.
Application data is not bundled with app itself - it should be downloaded from net on first run.
Create .ZIP file with your application data, and put it somewhere on HTTP server - ChangeAppSettings.sh
will ask you for the URL.
If your app data is bigger than 5 megabytes it's better to store it on SD card,
If your app data is bigger than 5 megabytes it's better to store it on SD card,
internal flash on Android is very limited.
If you'll add new libs add them to project/jni/, copy Android.mk from existing lib, and
add libname to Application.mk and project/jni/<yourapp>/Android.mk
If you'll add new libs - add them to project/jni/, copy Android.mk from existing lib, and
add libname to project/jni/<yourapp>/Android.mk
Audio formats currently supported are AUDIO_S8 and AUDIO_S16 (signed 8-bit and 16-bit PCM).
To debug your application launch Android 2.2 emulator or connect Android 2.2 device,
go to "project" directory and launch command
ndk-gdb --verbose --start --force
then when it fails enter command
target remote:5039
(then answer "y")
Note that it's extremely buggy (I've succeeded to launch debug session twice from 20 tries),
you may wish to add "sleep(30);" at the beginning of main() so your app won't crash before debugger attached.
So it's best to debug with code like:
__android_log_print(ANDROID_LOG_INFO, "My App", "We somehow reached execution point #224");
Known bugs:
0. Revert to widely-used SDL 1.2, backport changes that enable hardware acceleration from SDL 1.3
Ideally ChangeAppSettings.sh should ask you what SDL version you want to use.
1. Application will crash on exit or when you're pressing "Home" button - the correct behavior for Android apps
is to stay in memory and go to foreground when you're launching app again, that's not working yet because
app will lose OpenGL context (there are rumors that it won't lose GL context in 2.1 SDK).