Render ImageWallpaper with OpenGL ES and apply visual effects. (9a8e260a) · Commits · e / os / android_frameworks_base

packages/SystemUI/AndroidManifest.xml

+5 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,11 @@
		android:sharedUserId="android.uid.systemui"
		coreApp="true">

		<!-- Using OpenGL ES 2.0 -->
		<uses-feature
		android:glEsVersion="0x00020000"
		android:required="true" />

		<!-- SysUI must be the one to define this permission; its name is
		referenced by the core OS. -->
		<permission android:name="android.permission.systemui.IDENTITY"

packages/SystemUI/res/raw/image_wallpaper_fragment_shader.glsl

0 → 100644

+33 −0

Original line number	Diff line number	Diff line
		precision mediump float;

		uniform sampler2D uTexture;
		uniform float uCenterReveal;
		uniform float uReveal;
		uniform float uAod2Opacity;
		uniform int uAodMode;
		varying vec2 vTextureCoordinates;

		vec3 luminosity(vec3 color) {
		float lum = 0.2126 * color.r + 0.7152 * color.g + 0.0722 * color.b;
		return vec3(lum);
		}

		vec4 transform(vec3 diffuse) {
		// TODO: Add well comments here, tracking on b/123615467.
		vec3 lum = luminosity(diffuse);
		diffuse = mix(diffuse, lum, smoothstep(0., uCenterReveal, uReveal));
		float val = mix(uReveal, uCenterReveal, step(uCenterReveal, uReveal));
		diffuse = smoothstep(val, 1.0, diffuse);
		diffuse = uAod2Opacity (1. - smoothstep(uCenterReveal, 1., uReveal));
		return vec4(diffuse.r, diffuse.g, diffuse.b, 1.);
		}

		void main() {
		vec4 fragColor = texture2D(uTexture, vTextureCoordinates);
		// TODO: Remove the branch logic here, tracking on b/123615467.
		if (uAodMode != 0) {
		gl_FragColor = transform(fragColor.rgb);
		} else {
		gl_FragColor = fragColor;
		}
		}
		No newline at end of file

packages/SystemUI/res/raw/image_wallpaper_vertex_shader.glsl

0 → 100644

+8 −0

Original line number	Diff line number	Diff line
		attribute vec4 aPosition;
		attribute vec2 aTextureCoordinates;
		varying vec2 vTextureCoordinates;

		void main() {
		vTextureCoordinates = aTextureCoordinates;
		gl_Position = aPosition;
		}
		No newline at end of file

packages/SystemUI/src/com/android/systemui/ImageWallpaper.java

+157 −2

Original line number	Diff line number	Diff line
		@@ -19,8 +19,11 @@ package com.android.systemui;
		import static android.view.Display.DEFAULT_DISPLAY;

		import android.app.WallpaperManager;
		import android.content.BroadcastReceiver;
		import android.content.ComponentCallbacks2;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.graphics.Bitmap;
		import android.graphics.Canvas;
		import android.graphics.RecordingCanvas;
		@@ -28,7 +31,9 @@ import android.graphics.Rect;
		import android.graphics.RectF;
		import android.graphics.Region.Op;
		import android.hardware.display.DisplayManager;
		import android.opengl.GLSurfaceView;
		import android.os.AsyncTask;
		import android.os.Build;
		import android.os.Handler;
		import android.os.Trace;
		import android.service.wallpaper.WallpaperService;
		@@ -39,6 +44,7 @@ import android.view.Surface;
		import android.view.SurfaceHolder;

		import com.android.internal.annotations.VisibleForTesting;
		import com.android.systemui.glwallpaper.ImageWallpaperRenderer;

		import java.io.FileDescriptor;
		import java.io.IOException;
		@@ -51,12 +57,17 @@ import java.io.PrintWriter;
		public class ImageWallpaper extends WallpaperService {
		private static final String TAG = "ImageWallpaper";
		private static final String GL_LOG_TAG = "ImageWallpaperGL";
		// TODO: Testing purpose, need to remove later, b/123616712.
		private static final String SENSOR_EVENT_AWAKE = "systemui.test.event.awake";
		// TODO: Testing purpose, need to remove later, b/123616712.
		private static final String SENSOR_EVENT_SLEEP = "systemui.test.event.sleep";
		private static final boolean DEBUG = false;
		private static final String PROPERTY_KERNEL_QEMU = "ro.kernel.qemu";
		private static final long DELAY_FORGET_WALLPAPER = 5000;

		private WallpaperManager mWallpaperManager;
		private DrawableEngine mEngine;
		private GLEngine mGlEngine;

		@Override
		public void onCreate() {
		@@ -73,10 +84,112 @@ public class ImageWallpaper extends WallpaperService {

		@Override
		public Engine onCreateEngine() {
		mEngine = new DrawableEngine();
		return mEngine;
		mGlEngine = new GLEngine(this);
		return mGlEngine;
		}

		class GLEngine extends Engine {
		private GLWallpaperSurfaceView mWallpaperSurfaceView;

		GLEngine(Context context) {
		mWallpaperSurfaceView = new GLWallpaperSurfaceView(context);
		mWallpaperSurfaceView.setRenderer(
		new ImageWallpaperRenderer(context, mWallpaperSurfaceView));
		mWallpaperSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);
		setOffsetNotificationsEnabled(true);
		}

		@Override
		public void onAmbientModeChanged(boolean inAmbientMode, long animationDuration) {
		if (mWallpaperSurfaceView != null) {
		mWallpaperSurfaceView.notifyAmbientModeChanged(inAmbientMode);
		}
		}

		@Override
		public void onOffsetsChanged(float xOffset, float yOffset, float xOffsetStep,
		float yOffsetStep, int xPixelOffset, int yPixelOffset) {
		if (mWallpaperSurfaceView != null) {
		mWallpaperSurfaceView.notifyOffsetsChanged(xOffset, yOffset);
		}
		}

		private class GLWallpaperSurfaceView extends GLSurfaceView implements ImageGLView {
		private SensorEventListener mEventListener;
		private WallpaperStatusListener mWallpaperChangedListener;

		// TODO: Testing purpose, need to remove later, b/123616712.
		/**
		* For testing only: adb shell am broadcast -a <INTENT>
		*/
		private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
		if (intent == null) {
		return;
		}
		switch (intent.getAction()) {
		case SENSOR_EVENT_AWAKE:
		notifySensorEvents(true);
		break;
		case SENSOR_EVENT_SLEEP:
		notifySensorEvents(false);
		break;
		}
		}
		};

		GLWallpaperSurfaceView(Context context) {
		super(context);
		setEGLContextClientVersion(2);
		// TODO: Testing purpose, need to remove later, b/123616712.
		if (Build.IS_DEBUGGABLE) {
		IntentFilter filter = new IntentFilter();
		filter.addAction(SENSOR_EVENT_AWAKE);
		filter.addAction(SENSOR_EVENT_SLEEP);
		registerReceiver(mReceiver, filter);
		}
		}

		@Override
		public SurfaceHolder getHolder() {
		return getSurfaceHolder();
		}

		@Override
		public void setRenderer(Renderer renderer) {
		super.setRenderer(renderer);
		mEventListener = (SensorEventListener) renderer;
		mWallpaperChangedListener = (WallpaperStatusListener) renderer;
		}

		private void notifySensorEvents(boolean reach) {
		if (mEventListener != null) {
		mEventListener.onSensorEvent(reach);
		}
		}

		private void notifyAmbientModeChanged(boolean inAmbient) {
		if (mWallpaperChangedListener != null) {
		mWallpaperChangedListener.onAmbientModeChanged(inAmbient);
		}
		}

		private void notifyOffsetsChanged(float xOffset, float yOffset) {
		if (mWallpaperChangedListener != null) {
		mWallpaperChangedListener.onOffsetsChanged(
		xOffset, yOffset, getHolder().getSurfaceFrame());
		}
		}

		@Override
		public void render() {
		requestRender();
		}
		}
		}

		// TODO: Remove this engine, tracking on b/123617158.
		class DrawableEngine extends Engine {
		private final Runnable mUnloadWallpaperCallback = () -> {
		unloadWallpaper(false /* forgetSize */);
		@@ -564,4 +677,46 @@ public class ImageWallpaper extends WallpaperService {
		}
		}
		}

		/**
		* A listener to trace sensor event.
		*/
		public interface SensorEventListener {

		/**
		* Called back while sensor event comes.
		* @param reach The status of sensor.
		*/
		void onSensorEvent(boolean reach);
		}

		/**
		* A listener to trace status of image wallpaper.
		*/
		public interface WallpaperStatusListener {

		/**
		* Called back while ambient mode changes.
		* @param inAmbientMode true if is in ambient mode, false otherwise.
		*/
		void onAmbientModeChanged(boolean inAmbientMode);

		/**
		* Called back while wallpaper offsets.
		* @param xOffset The offset portion along x.
		* @param yOffset The offset portion along y.
		*/
		void onOffsetsChanged(float xOffset, float yOffset, Rect frame);
		}

		/**
		* An abstraction for view of GLRenderer.
		*/
		public interface ImageGLView {

		/**
		* Ask the view to render.
		*/
		void render();
		}
		}

packages/SystemUI/src/com/android/systemui/glwallpaper/ImageGLProgram.java

0 → 100644

+115 −0

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		/*
		* Copyright (C) 2019 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.systemui.glwallpaper;

		import static android.opengl.GLES20.GL_FRAGMENT_SHADER;
		import static android.opengl.GLES20.GL_VERTEX_SHADER;
		import static android.opengl.GLES20.glAttachShader;
		import static android.opengl.GLES20.glCompileShader;
		import static android.opengl.GLES20.glCreateProgram;
		import static android.opengl.GLES20.glCreateShader;
		import static android.opengl.GLES20.glGetAttribLocation;
		import static android.opengl.GLES20.glGetUniformLocation;
		import static android.opengl.GLES20.glLinkProgram;
		import static android.opengl.GLES20.glShaderSource;
		import static android.opengl.GLES20.glUseProgram;

		import android.content.Context;
		import android.content.res.Resources;
		import android.util.Log;

		import java.io.BufferedReader;
		import java.io.IOException;
		import java.io.InputStreamReader;

		/**
		* This class takes charge of linking shader codes and then return a handle for OpenGL ES program.
		*/
		class ImageGLProgram {
		private static final String TAG = ImageGLProgram.class.getSimpleName();

		private Context mContext;
		private int mProgramHandle;

		ImageGLProgram(Context context) {
		mContext = context.getApplicationContext();
		}

		private int loadShaderProgram(int vertexId, int fragmentId) {
		final String vertexSrc = getShaderResource(vertexId);
		final String fragmentSrc = getShaderResource(fragmentId);
		final int vertexHandle = getShaderHandle(GL_VERTEX_SHADER, vertexSrc);
		final int fragmentHandle = getShaderHandle(GL_FRAGMENT_SHADER, fragmentSrc);
		return getProgramHandle(vertexHandle, fragmentHandle);
		}

		private String getShaderResource(int shaderId) {
		Resources res = mContext.getResources();
		StringBuilder code = new StringBuilder();

		try (BufferedReader reader = new BufferedReader(
		new InputStreamReader(res.openRawResource(shaderId)))) {
		String nextLine;
		while ((nextLine = reader.readLine()) != null) {
		code.append(nextLine).append("\n");
		}
		} catch (IOException \| Resources.NotFoundException ex) {
		Log.d(TAG, "Can not read the shader source", ex);
		code = null;
		}

		return code == null ? "" : code.toString();
		}

		private int getShaderHandle(int type, String src) {
		final int shader = glCreateShader(type);
		if (shader == 0) {
		Log.d(TAG, "Create shader failed, type=" + type);
		return 0;
		}
		glShaderSource(shader, src);
		glCompileShader(shader);
		return shader;
		}

		private int getProgramHandle(int vertexHandle, int fragmentHandle) {
		final int program = glCreateProgram();
		if (program == 0) {
		Log.d(TAG, "Can not create OpenGL ES program");
		return 0;
		}

		glAttachShader(program, vertexHandle);
		glAttachShader(program, fragmentHandle);
		glLinkProgram(program);
		return program;
		}

		boolean useGLProgram(int vertexResId, int fragmentResId) {
		mProgramHandle = loadShaderProgram(vertexResId, fragmentResId);
		glUseProgram(mProgramHandle);
		return true;
		}

		int getAttributeHandle(String name) {
		return glGetAttribLocation(mProgramHandle, name);
		}

		int getUniformHandle(String name) {
		return glGetUniformLocation(mProgramHandle, name);
		}
		}