From 82557750b0226e66cb5b9f0b680bcc7ec702ac5d Mon Sep 17 00:00:00 2001 From: Sam Lantinga Date: Fri, 22 Sep 2017 08:31:56 -0700 Subject: [PATCH] Separated out SDL Android java code so audio, controller, and filesystem APIs can be used independently of the SDL activity, in Qt apps for example. --- android-project/src/org/libsdl/app/SDL.java | 37 ++ .../src/org/libsdl/app/SDLAudioManager.java | 179 ++++++++ .../org/libsdl/app/SDLControllerManager.java | 427 ++++++++++++++++++ 3 files changed, 643 insertions(+) create mode 100644 android-project/src/org/libsdl/app/SDL.java create mode 100644 android-project/src/org/libsdl/app/SDLAudioManager.java create mode 100644 android-project/src/org/libsdl/app/SDLControllerManager.java diff --git a/android-project/src/org/libsdl/app/SDL.java b/android-project/src/org/libsdl/app/SDL.java new file mode 100644 index 000000000..cfe483094 --- /dev/null +++ b/android-project/src/org/libsdl/app/SDL.java @@ -0,0 +1,37 @@ +package org.libsdl.app; + +import android.content.Context; + +/** + SDL library initialization +*/ +public class SDL { + + // This function should be called first and sets up the native code + // so it can call into the Java classes + public static void setupJNI() { + SDLActivity.nativeSetupJNI(); + SDLAudioManager.nativeSetupJNI(); + SDLControllerManager.nativeSetupJNI(); + } + + // This function should be called each time the activity is started + public static void initialize() { + setContext(null); + + SDLActivity.initialize(); + SDLAudioManager.initialize(); + SDLControllerManager.initialize(); + } + + // This function stores the current activity (SDL or not) + public static void setContext(Context context) { + mContext = context; + } + + public static Context getContext() { + return mContext; + } + + protected static Context mContext; +} diff --git a/android-project/src/org/libsdl/app/SDLAudioManager.java b/android-project/src/org/libsdl/app/SDLAudioManager.java new file mode 100644 index 000000000..66c3fea42 --- /dev/null +++ b/android-project/src/org/libsdl/app/SDLAudioManager.java @@ -0,0 +1,179 @@ +package org.libsdl.app; + +import android.media.*; +import android.hardware.*; +import android.util.Log; + +public class SDLAudioManager +{ + protected static final String TAG = "SDLAudio"; + + protected static AudioTrack mAudioTrack; + protected static AudioRecord mAudioRecord; + + public static void initialize() { + mAudioTrack = null; + mAudioRecord = null; + } + + // Audio + + /** + * This method is called by SDL using JNI. + */ + public static int audioOpen(int sampleRate, boolean is16Bit, boolean isStereo, int desiredFrames) { + int channelConfig = isStereo ? AudioFormat.CHANNEL_CONFIGURATION_STEREO : AudioFormat.CHANNEL_CONFIGURATION_MONO; + int audioFormat = is16Bit ? AudioFormat.ENCODING_PCM_16BIT : AudioFormat.ENCODING_PCM_8BIT; + int frameSize = (isStereo ? 2 : 1) * (is16Bit ? 2 : 1); + + Log.v(TAG, "SDL audio: wanted " + (isStereo ? "stereo" : "mono") + " " + (is16Bit ? "16-bit" : "8-bit") + " " + (sampleRate / 1000f) + "kHz, " + desiredFrames + " frames buffer"); + + // Let the user pick a larger buffer if they really want -- but ye + // gods they probably shouldn't, the minimums are horrifyingly high + // latency already + desiredFrames = Math.max(desiredFrames, (AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat) + frameSize - 1) / frameSize); + + if (mAudioTrack == null) { + mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate, + channelConfig, audioFormat, desiredFrames * frameSize, AudioTrack.MODE_STREAM); + + // Instantiating AudioTrack can "succeed" without an exception and the track may still be invalid + // Ref: https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/media/java/android/media/AudioTrack.java + // Ref: http://developer.android.com/reference/android/media/AudioTrack.html#getState() + + if (mAudioTrack.getState() != AudioTrack.STATE_INITIALIZED) { + Log.e(TAG, "Failed during initialization of Audio Track"); + mAudioTrack = null; + return -1; + } + + mAudioTrack.play(); + } + + Log.v(TAG, "SDL audio: got " + ((mAudioTrack.getChannelCount() >= 2) ? "stereo" : "mono") + " " + ((mAudioTrack.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) ? "16-bit" : "8-bit") + " " + (mAudioTrack.getSampleRate() / 1000f) + "kHz, " + desiredFrames + " frames buffer"); + + return 0; + } + + /** + * This method is called by SDL using JNI. + */ + public static void audioWriteShortBuffer(short[] buffer) { + if (mAudioTrack == null) { + Log.e(TAG, "Attempted to make audio call with uninitialized audio!"); + return; + } + + for (int i = 0; i < buffer.length; ) { + int result = mAudioTrack.write(buffer, i, buffer.length - i); + if (result > 0) { + i += result; + } else if (result == 0) { + try { + Thread.sleep(1); + } catch(InterruptedException e) { + // Nom nom + } + } else { + Log.w(TAG, "SDL audio: error return from write(short)"); + return; + } + } + } + + /** + * This method is called by SDL using JNI. + */ + public static void audioWriteByteBuffer(byte[] buffer) { + if (mAudioTrack == null) { + Log.e(TAG, "Attempted to make audio call with uninitialized audio!"); + return; + } + + for (int i = 0; i < buffer.length; ) { + int result = mAudioTrack.write(buffer, i, buffer.length - i); + if (result > 0) { + i += result; + } else if (result == 0) { + try { + Thread.sleep(1); + } catch(InterruptedException e) { + // Nom nom + } + } else { + Log.w(TAG, "SDL audio: error return from write(byte)"); + return; + } + } + } + + /** + * This method is called by SDL using JNI. + */ + public static int captureOpen(int sampleRate, boolean is16Bit, boolean isStereo, int desiredFrames) { + int channelConfig = isStereo ? AudioFormat.CHANNEL_CONFIGURATION_STEREO : AudioFormat.CHANNEL_CONFIGURATION_MONO; + int audioFormat = is16Bit ? AudioFormat.ENCODING_PCM_16BIT : AudioFormat.ENCODING_PCM_8BIT; + int frameSize = (isStereo ? 2 : 1) * (is16Bit ? 2 : 1); + + Log.v(TAG, "SDL capture: wanted " + (isStereo ? "stereo" : "mono") + " " + (is16Bit ? "16-bit" : "8-bit") + " " + (sampleRate / 1000f) + "kHz, " + desiredFrames + " frames buffer"); + + // Let the user pick a larger buffer if they really want -- but ye + // gods they probably shouldn't, the minimums are horrifyingly high + // latency already + desiredFrames = Math.max(desiredFrames, (AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat) + frameSize - 1) / frameSize); + + if (mAudioRecord == null) { + mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, sampleRate, + channelConfig, audioFormat, desiredFrames * frameSize); + + // see notes about AudioTrack state in audioOpen(), above. Probably also applies here. + if (mAudioRecord.getState() != AudioRecord.STATE_INITIALIZED) { + Log.e(TAG, "Failed during initialization of AudioRecord"); + mAudioRecord.release(); + mAudioRecord = null; + return -1; + } + + mAudioRecord.startRecording(); + } + + Log.v(TAG, "SDL capture: got " + ((mAudioRecord.getChannelCount() >= 2) ? "stereo" : "mono") + " " + ((mAudioRecord.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) ? "16-bit" : "8-bit") + " " + (mAudioRecord.getSampleRate() / 1000f) + "kHz, " + desiredFrames + " frames buffer"); + + return 0; + } + + /** This method is called by SDL using JNI. */ + public static int captureReadShortBuffer(short[] buffer, boolean blocking) { + // !!! FIXME: this is available in API Level 23. Until then, we always block. :( + //return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING); + return mAudioRecord.read(buffer, 0, buffer.length); + } + + /** This method is called by SDL using JNI. */ + public static int captureReadByteBuffer(byte[] buffer, boolean blocking) { + // !!! FIXME: this is available in API Level 23. Until then, we always block. :( + //return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING); + return mAudioRecord.read(buffer, 0, buffer.length); + } + + + /** This method is called by SDL using JNI. */ + public static void audioClose() { + if (mAudioTrack != null) { + mAudioTrack.stop(); + mAudioTrack.release(); + mAudioTrack = null; + } + } + + /** This method is called by SDL using JNI. */ + public static void captureClose() { + if (mAudioRecord != null) { + mAudioRecord.stop(); + mAudioRecord.release(); + mAudioRecord = null; + } + } + + public static native int nativeSetupJNI(); +} diff --git a/android-project/src/org/libsdl/app/SDLControllerManager.java b/android-project/src/org/libsdl/app/SDLControllerManager.java new file mode 100644 index 000000000..c050764da --- /dev/null +++ b/android-project/src/org/libsdl/app/SDLControllerManager.java @@ -0,0 +1,427 @@ +package org.libsdl.app; + +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.Comparator; +import java.util.List; + +import android.app.*; +import android.content.Context; +import android.hardware.*; +import android.os.*; +import android.view.*; +import android.util.Log; + + +public class SDLControllerManager +{ + + public static native int nativeSetupJNI(); + + public static native int nativeAddJoystick(int device_id, String name, String desc, + int is_accelerometer, int nbuttons, + int naxes, int nhats, int nballs); + public static native int nativeRemoveJoystick(int device_id); + public static native int nativeAddHaptic(int device_id, String name); + public static native int nativeRemoveHaptic(int device_id); + public static native int onNativePadDown(int device_id, int keycode); + public static native int onNativePadUp(int device_id, int keycode); + public static native void onNativeJoy(int device_id, int axis, + float value); + public static native void onNativeHat(int device_id, int hat_id, + int x, int y); + + protected static SDLJoystickHandler mJoystickHandler; + protected static SDLHapticHandler mHapticHandler; + + private static final String TAG = "SDLControllerManager"; + + public static void initialize() { + mJoystickHandler = null; + mHapticHandler = null; + + SDLControllerManager.setup(); + } + + public static void setup() { + if (Build.VERSION.SDK_INT >= 16) { + mJoystickHandler = new SDLJoystickHandler_API16(); + } else if (Build.VERSION.SDK_INT >= 12) { + mJoystickHandler = new SDLJoystickHandler_API12(); + } else { + mJoystickHandler = new SDLJoystickHandler(); + } + mHapticHandler = new SDLHapticHandler(); + } + + // Joystick glue code, just a series of stubs that redirect to the SDLJoystickHandler instance + public static boolean handleJoystickMotionEvent(MotionEvent event) { + return mJoystickHandler.handleMotionEvent(event); + } + + /** + * This method is called by SDL using JNI. + */ + public static void pollInputDevices() { + mJoystickHandler.pollInputDevices(); + } + + /** + * This method is called by SDL using JNI. + */ + public static void pollHapticDevices() { + mHapticHandler.pollHapticDevices(); + } + + /** + * This method is called by SDL using JNI. + */ + public static void hapticRun(int device_id, int length) { + mHapticHandler.run(device_id, length); + } + + // Check if a given device is considered a possible SDL joystick + public static boolean isDeviceSDLJoystick(int deviceId) { + InputDevice device = InputDevice.getDevice(deviceId); + // We cannot use InputDevice.isVirtual before API 16, so let's accept + // only nonnegative device ids (VIRTUAL_KEYBOARD equals -1) + if ((device == null) || (deviceId < 0)) { + return false; + } + int sources = device.getSources(); + + if ((sources & InputDevice.SOURCE_CLASS_JOYSTICK) == InputDevice.SOURCE_CLASS_JOYSTICK) { + Log.v(TAG, "Input device " + device.getName() + " is a joystick."); + } + if ((sources & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD) { + Log.v(TAG, "Input device " + device.getName() + " is a dpad."); + } + if ((sources & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD) { + Log.v(TAG, "Input device " + device.getName() + " is a gamepad."); + } + + return (((sources & InputDevice.SOURCE_CLASS_JOYSTICK) == InputDevice.SOURCE_CLASS_JOYSTICK) || + ((sources & InputDevice.SOURCE_DPAD) == InputDevice.SOURCE_DPAD) || + ((sources & InputDevice.SOURCE_GAMEPAD) == InputDevice.SOURCE_GAMEPAD) + ); + } + +} + +/* A null joystick handler for API level < 12 devices (the accelerometer is handled separately) */ +class SDLJoystickHandler { + + /** + * Handles given MotionEvent. + * @param event the event to be handled. + * @return if given event was processed. + */ + public boolean handleMotionEvent(MotionEvent event) { + return false; + } + + /** + * Handles adding and removing of input devices. + */ + public void pollInputDevices() { + } +} + +/* Actual joystick functionality available for API >= 12 devices */ +class SDLJoystickHandler_API12 extends SDLJoystickHandler { + + static class SDLJoystick { + public int device_id; + public String name; + public String desc; + public ArrayList axes; + public ArrayList hats; + } + static class RangeComparator implements Comparator { + @Override + public int compare(InputDevice.MotionRange arg0, InputDevice.MotionRange arg1) { + return arg0.getAxis() - arg1.getAxis(); + } + } + + private ArrayList mJoysticks; + + public SDLJoystickHandler_API12() { + + mJoysticks = new ArrayList(); + } + + @Override + public void pollInputDevices() { + int[] deviceIds = InputDevice.getDeviceIds(); + // It helps processing the device ids in reverse order + // For example, in the case of the XBox 360 wireless dongle, + // so the first controller seen by SDL matches what the receiver + // considers to be the first controller + + for(int i=deviceIds.length-1; i>-1; i--) { + SDLJoystick joystick = getJoystick(deviceIds[i]); + if (joystick == null) { + joystick = new SDLJoystick(); + InputDevice joystickDevice = InputDevice.getDevice(deviceIds[i]); + if (SDLControllerManager.isDeviceSDLJoystick(deviceIds[i])) { + joystick.device_id = deviceIds[i]; + joystick.name = joystickDevice.getName(); + joystick.desc = getJoystickDescriptor(joystickDevice); + joystick.axes = new ArrayList(); + joystick.hats = new ArrayList(); + + List ranges = joystickDevice.getMotionRanges(); + Collections.sort(ranges, new RangeComparator()); + for (InputDevice.MotionRange range : ranges ) { + if ((range.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { + if (range.getAxis() == MotionEvent.AXIS_HAT_X || + range.getAxis() == MotionEvent.AXIS_HAT_Y) { + joystick.hats.add(range); + } + else { + joystick.axes.add(range); + } + } + } + + mJoysticks.add(joystick); + SDLControllerManager.nativeAddJoystick(joystick.device_id, joystick.name, joystick.desc, 0, -1, + joystick.axes.size(), joystick.hats.size()/2, 0); + } + } + } + + /* Check removed devices */ + ArrayList removedDevices = new ArrayList(); + for(int i=0; i < mJoysticks.size(); i++) { + int device_id = mJoysticks.get(i).device_id; + int j; + for (j=0; j < deviceIds.length; j++) { + if (device_id == deviceIds[j]) break; + } + if (j == deviceIds.length) { + removedDevices.add(Integer.valueOf(device_id)); + } + } + + for(int i=0; i < removedDevices.size(); i++) { + int device_id = removedDevices.get(i).intValue(); + SDLControllerManager.nativeRemoveJoystick(device_id); + for (int j=0; j < mJoysticks.size(); j++) { + if (mJoysticks.get(j).device_id == device_id) { + mJoysticks.remove(j); + break; + } + } + } + } + + protected SDLJoystick getJoystick(int device_id) { + for(int i=0; i < mJoysticks.size(); i++) { + if (mJoysticks.get(i).device_id == device_id) { + return mJoysticks.get(i); + } + } + return null; + } + + @Override + public boolean handleMotionEvent(MotionEvent event) { + if ((event.getSource() & InputDevice.SOURCE_JOYSTICK) != 0) { + int actionPointerIndex = event.getActionIndex(); + int action = event.getActionMasked(); + switch(action) { + case MotionEvent.ACTION_MOVE: + SDLJoystick joystick = getJoystick(event.getDeviceId()); + if ( joystick != null ) { + for (int i = 0; i < joystick.axes.size(); i++) { + InputDevice.MotionRange range = joystick.axes.get(i); + /* Normalize the value to -1...1 */ + float value = ( event.getAxisValue( range.getAxis(), actionPointerIndex) - range.getMin() ) / range.getRange() * 2.0f - 1.0f; + SDLControllerManager.onNativeJoy(joystick.device_id, i, value ); + } + for (int i = 0; i < joystick.hats.size(); i+=2) { + int hatX = Math.round(event.getAxisValue( joystick.hats.get(i).getAxis(), actionPointerIndex ) ); + int hatY = Math.round(event.getAxisValue( joystick.hats.get(i+1).getAxis(), actionPointerIndex ) ); + SDLControllerManager.onNativeHat(joystick.device_id, i/2, hatX, hatY ); + } + } + break; + default: + break; + } + } + return true; + } + + public String getJoystickDescriptor(InputDevice joystickDevice) { + return joystickDevice.getName(); + } +} + + +class SDLJoystickHandler_API16 extends SDLJoystickHandler_API12 { + + @Override + public String getJoystickDescriptor(InputDevice joystickDevice) { + String desc = joystickDevice.getDescriptor(); + + if (desc != null && desc != "") { + return desc; + } + + return super.getJoystickDescriptor(joystickDevice); + } +} + +class SDLHapticHandler { + + class SDLHaptic { + public int device_id; + public String name; + public Vibrator vib; + } + + private ArrayList mHaptics; + + public SDLHapticHandler() { + mHaptics = new ArrayList(); + } + + public void run(int device_id, int length) { + SDLHaptic haptic = getHaptic(device_id); + if (haptic != null) { + haptic.vib.vibrate (length); + } + } + + public void pollHapticDevices() { + + final int deviceId_VIBRATOR_SERVICE = 999999; + boolean hasVibrator = false; + + int[] deviceIds = InputDevice.getDeviceIds(); + // It helps processing the device ids in reverse order + // For example, in the case of the XBox 360 wireless dongle, + // so the first controller seen by SDL matches what the receiver + // considers to be the first controller + + for(int i=deviceIds.length-1; i>-1; i--) { + SDLHaptic haptic = getHaptic(deviceIds[i]); + if (haptic == null) { + InputDevice device = InputDevice.getDevice(deviceIds[i]); + Vibrator vib = device.getVibrator(); + if (vib.hasVibrator()) { + haptic = new SDLHaptic(); + haptic.device_id = deviceIds[i]; + haptic.name = device.getName(); + haptic.vib = vib; + mHaptics.add(haptic); + SDLControllerManager.nativeAddHaptic(haptic.device_id, haptic.name); + } + } + } + + /* Check VIBRATOR_SERVICE */ + { + Vibrator vib = (Vibrator) SDL.getContext().getSystemService(Context.VIBRATOR_SERVICE); + if (vib != null && vib.hasVibrator()) { + hasVibrator = true; + SDLHaptic haptic = getHaptic(deviceId_VIBRATOR_SERVICE); + if (haptic == null) { + haptic = new SDLHaptic(); + haptic.device_id = deviceId_VIBRATOR_SERVICE; + haptic.name = "VIBRATOR_SERVICE"; + haptic.vib = vib; + mHaptics.add(haptic); + SDLControllerManager.nativeAddHaptic(haptic.device_id, haptic.name); + } + } + } + + /* Check removed devices */ + ArrayList removedDevices = new ArrayList(); + for(int i=0; i < mHaptics.size(); i++) { + int device_id = mHaptics.get(i).device_id; + int j; + for (j=0; j < deviceIds.length; j++) { + if (device_id == deviceIds[j]) break; + } + + if (device_id == deviceId_VIBRATOR_SERVICE && hasVibrator) { + // don't remove the vibrator if it is still present + } else if (j == deviceIds.length) { + removedDevices.add(device_id); + } + } + + for(int i=0; i < removedDevices.size(); i++) { + int device_id = removedDevices.get(i); + SDLControllerManager.nativeRemoveHaptic(device_id); + for (int j=0; j < mHaptics.size(); j++) { + if (mHaptics.get(j).device_id == device_id) { + mHaptics.remove(j); + break; + } + } + } + } + + protected SDLHaptic getHaptic(int device_id) { + for(int i=0; i < mHaptics.size(); i++) { + if (mHaptics.get(i).device_id == device_id) { + return mHaptics.get(i); + } + } + return null; + } +} + +class SDLGenericMotionListener_API12 implements View.OnGenericMotionListener { + // Generic Motion (mouse hover, joystick...) events go here + @Override + public boolean onGenericMotion(View v, MotionEvent event) { + float x, y; + int action; + + switch ( event.getSource() ) { + case InputDevice.SOURCE_JOYSTICK: + case InputDevice.SOURCE_GAMEPAD: + case InputDevice.SOURCE_DPAD: + return SDLControllerManager.handleJoystickMotionEvent(event); + + case InputDevice.SOURCE_MOUSE: + if (!SDLActivity.mSeparateMouseAndTouch) { + break; + } + action = event.getActionMasked(); + switch (action) { + case MotionEvent.ACTION_SCROLL: + x = event.getAxisValue(MotionEvent.AXIS_HSCROLL, 0); + y = event.getAxisValue(MotionEvent.AXIS_VSCROLL, 0); + SDLActivity.onNativeMouse(0, action, x, y); + return true; + + case MotionEvent.ACTION_HOVER_MOVE: + x = event.getX(0); + y = event.getY(0); + + SDLActivity.onNativeMouse(0, action, x, y); + return true; + + default: + break; + } + break; + + default: + break; + } + + // Event was not managed + return false; + } +} +