diff options
Diffstat (limited to 'src/com/android/dreams/basic/Colors.java')
| -rw-r--r-- | src/com/android/dreams/basic/Colors.java | 472 |
1 files changed, 55 insertions, 417 deletions
diff --git a/src/com/android/dreams/basic/Colors.java b/src/com/android/dreams/basic/Colors.java index 021189f..5f16d2c 100644 --- a/src/com/android/dreams/basic/Colors.java +++ b/src/com/android/dreams/basic/Colors.java @@ -16,411 +16,36 @@ package com.android.dreams.basic; -import android.graphics.Color; import android.graphics.SurfaceTexture; -import android.service.dreams.Dream; +import android.service.dreams.DreamService; import android.util.Log; -import android.view.Choreographer; -import android.view.Choreographer.FrameCallback; import android.view.TextureView; -import android.os.Looper; -import android.os.SystemClock; - -import javax.microedition.khronos.egl.EGL10; -import javax.microedition.khronos.egl.EGLConfig; -import javax.microedition.khronos.egl.EGLContext; -import javax.microedition.khronos.egl.EGLDisplay; -import javax.microedition.khronos.egl.EGLSurface; -import javax.microedition.khronos.opengles.GL; -import android.opengl.GLUtils; - -import java.nio.ByteBuffer; -import java.nio.ByteOrder; -import java.nio.FloatBuffer; -import java.nio.ShortBuffer; - -import static android.opengl.GLES20.*; - -public class Colors extends Dream implements TextureView.SurfaceTextureListener { +import android.os.Handler; +import android.os.HandlerThread; + +/** + * Plays a delightful show of colors. + * <p> + * This dream performs its rendering using OpenGL on a separate rendering thread. + * </p> + */ +public class Colors extends DreamService implements TextureView.SurfaceTextureListener { static final String TAG = Colors.class.getSimpleName(); - static final boolean DEBUG = true; + static final boolean DEBUG = false; + public static final void LOG(String fmt, Object... args) { if (!DEBUG) return; Log.v(TAG, String.format(fmt, args)); } - // It's so easy to use OpenGLES 2.0! - private EGL10 mEgl; - private EGLDisplay mEglDisplay; - private EGLConfig mEglConfig; - private EGLContext mEglContext; - private EGLSurface mEglSurface; - private SurfaceTexture mSurface; - private GL mGL; - - static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098; - static final int EGL_OPENGL_ES2_BIT = 4; - - volatile boolean mStop = false; - - Square mSquare; - TextureView mTextureView; - - private long mLastFrameTime; - private int mFrameNum = 0; - - private FrameCallback mFrameCallback = new Choreographer.FrameCallback() { - @Override - public void doFrame(long frameTimeNanos) { - if (mStop) { - Looper.myLooper().quit(); - return; - } - - if (mSquare == null) { - initGL(); - - mSquare = new Square(); - glClearColor(1f, 0f, 0f, 1.0f); - - if (DEBUG) { - mLastFrameTime = frameTimeNanos; - } - } - - checkCurrent(); - - glViewport(0, 0, mWidth, mHeight); - - if (DEBUG) { - mFrameNum ++; - final long t2 = frameTimeNanos; - final long dt = t2-mLastFrameTime; - final int fps = (int) (1e9f/dt); - if (0 == (mFrameNum % 10)) { - LOG("frame %d fps=%d", mFrameNum, fps); - } - if (fps < 40) { - LOG("JANK! (%d ms)", dt); - } - mLastFrameTime = t2; - } - - glClear(GL_COLOR_BUFFER_BIT); - checkGlError(); - - mSquare.draw(); - - if (!mEgl.eglSwapBuffers(mEglDisplay, mEglSurface)) { - throw new RuntimeException("Cannot swap buffers"); - } - checkEglError(); - - mChoreographer.postFrameCallback(mFrameCallback); - } - }; - - private int mHeight; - - private int mWidth; - private Choreographer mChoreographer; - - class Square { - // Straight from the API guide - private final String vertexShaderCode = - "attribute vec4 a_position;" + - "attribute vec4 a_color;" + - "varying vec4 v_color;" + - "void main() {" + - " gl_Position = a_position;" + - " v_color = a_color;" + - "}"; - - private final String fragmentShaderCode = - "precision mediump float;" + - "varying vec4 v_color;" + - "void main() {" + - " gl_FragColor = v_color;" + - "}"; - - private final FloatBuffer vertexBuffer; - private final FloatBuffer colorBuffer; - private final int mProgram; - private int mPositionHandle; - private int mColorHandle; - - private ShortBuffer drawListBuffer; - - - // number of coordinates per vertex in this array - final int COORDS_PER_VERTEX = 3; - float squareCoords[] = { -1f, 1f, 0f, // top left - -1f, -1f, 0f, // bottom left - 1f, -1f, 0f, // bottom right - 1f, 1f, 0f }; // top right - - private short drawOrder[] = { 0, 1, 2, 0, 2, 3 }; // order to draw vertices (CCW) - - private final float HUES[] = { // reverse order due to CCW winding - 60, // yellow - 120, // green - 343, // red - 200, // blue - }; - - private final int vertexCount = squareCoords.length / COORDS_PER_VERTEX; - private final int vertexStride = COORDS_PER_VERTEX * 4; // bytes per vertex - - private float cornerFrequencies[] = new float[vertexCount]; - private int cornerRotation; - - final int COLOR_PLANES_PER_VERTEX = 4; - private final int colorStride = COLOR_PLANES_PER_VERTEX * 4; // bytes per vertex - - // Set color with red, green, blue and alpha (opacity) values - float color[] = { 0.63671875f, 0.76953125f, 0.22265625f, 1.0f }; - - public Square() { - for (int i=0; i<vertexCount; i++) { - cornerFrequencies[i] = 1f + (float)(Math.random() * 5); - } - cornerRotation = (int)(Math.random() * vertexCount); - // initialize vertex byte buffer for shape coordinates - ByteBuffer bb = ByteBuffer.allocateDirect( - // (# of coordinate values * 4 bytes per float) - squareCoords.length * 4); - bb.order(ByteOrder.nativeOrder()); - vertexBuffer = bb.asFloatBuffer(); - vertexBuffer.put(squareCoords); - vertexBuffer.position(0); - - bb = ByteBuffer.allocateDirect(vertexCount * colorStride); - bb.order(ByteOrder.nativeOrder()); - colorBuffer = bb.asFloatBuffer(); - - // initialize byte buffer for the draw list - ByteBuffer dlb = ByteBuffer.allocateDirect( - // (# of coordinate values * 2 bytes per short) - drawOrder.length * 2); - dlb.order(ByteOrder.nativeOrder()); - drawListBuffer = dlb.asShortBuffer(); - drawListBuffer.put(drawOrder); - drawListBuffer.position(0); - - mProgram = buildProgram(vertexShaderCode, fragmentShaderCode); - - // Add program to OpenGL environment - glUseProgram(mProgram); - checkGlError("glUseProgram(" + mProgram + ")"); - - // get handle to vertex shader's a_position member - mPositionHandle = glGetAttribLocation(mProgram, "a_position"); - checkGlError("glGetAttribLocation(a_position)"); - - // Enable a handle to the triangle vertices - glEnableVertexAttribArray(mPositionHandle); - - // Prepare the triangle coordinate data - glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX, - GL_FLOAT, false, - vertexStride, vertexBuffer); - - mColorHandle = glGetAttribLocation(mProgram, "a_color"); - checkGlError("glGetAttribLocation(a_color)"); - glEnableVertexAttribArray(mColorHandle); - checkGlError("glEnableVertexAttribArray"); - } - - final float[] _tmphsv = new float[3]; - public void draw() { - // same thing for colors - long now = SystemClock.uptimeMillis(); - colorBuffer.clear(); - final float t = now / 4000f; // set the base period to 4sec - for(int i=0; i<vertexCount; i++) { - final float freq = (float) Math.sin(2 * Math.PI * t / cornerFrequencies[i]); - _tmphsv[0] = HUES[(i + cornerRotation) % vertexCount]; - _tmphsv[1] = 1f; - _tmphsv[2] = freq * 0.25f + 0.75f; - final int c = Color.HSVToColor(_tmphsv); - colorBuffer.put((float)((c & 0xFF0000) >> 16) / 0xFF); - colorBuffer.put((float)((c & 0x00FF00) >> 8) / 0xFF); - colorBuffer.put((float)(c & 0x0000FF) / 0xFF); - colorBuffer.put(/*a*/ 1f); - } - colorBuffer.position(0); - glVertexAttribPointer(mColorHandle, COLOR_PLANES_PER_VERTEX, - GL_FLOAT, false, - colorStride, colorBuffer); - checkGlError("glVertexAttribPointer"); - - // Draw the triangle - glDrawArrays(GL_TRIANGLE_FAN, 0, vertexCount); - } - } - - private static int buildProgram(String vertex, String fragment) { - int vertexShader = buildShader(vertex, GL_VERTEX_SHADER); - if (vertexShader == 0) return 0; - - int fragmentShader = buildShader(fragment, GL_FRAGMENT_SHADER); - if (fragmentShader == 0) return 0; - - int program = glCreateProgram(); - glAttachShader(program, vertexShader); - checkGlError(); + private TextureView mTextureView; - glAttachShader(program, fragmentShader); - checkGlError(); + // The handler thread and handler on which the GL renderer is running. + private HandlerThread mRendererHandlerThread; + private Handler mRendererHandler; - glLinkProgram(program); - checkGlError(); - - int[] status = new int[1]; - glGetProgramiv(program, GL_LINK_STATUS, status, 0); - if (status[0] != GL_TRUE) { - String error = glGetProgramInfoLog(program); - Log.d(TAG, "Error while linking program:\n" + error); - glDeleteShader(vertexShader); - glDeleteShader(fragmentShader); - glDeleteProgram(program); - return 0; - } - - return program; - } - - private static int buildShader(String source, int type) { - int shader = glCreateShader(type); - - glShaderSource(shader, source); - checkGlError(); - - glCompileShader(shader); - checkGlError(); - - int[] status = new int[1]; - glGetShaderiv(shader, GL_COMPILE_STATUS, status, 0); - if (status[0] != GL_TRUE) { - String error = glGetShaderInfoLog(shader); - Log.d(TAG, "Error while compiling shader:\n" + error); - glDeleteShader(shader); - return 0; - } - - return shader; - } - @Override - public void onStart() { - super.onStart(); - } - - private void checkEglError() { - int error = mEgl.eglGetError(); - if (error != EGL10.EGL_SUCCESS) { - Log.w(TAG, "EGL error = 0x" + Integer.toHexString(error)); - } - } - - private static void checkGlError() { - checkGlError(""); - } - - private static void checkGlError(String what) { - int error = glGetError(); - if (error != GL_NO_ERROR) { - Log.w(TAG, "GL error: (" + what + ") = 0x" + Integer.toHexString(error)); - } - } - - private void finishGL() { - mEgl.eglDestroyContext(mEglDisplay, mEglContext); - mEgl.eglDestroySurface(mEglDisplay, mEglSurface); - } - - private void checkCurrent() { - if (!mEglContext.equals(mEgl.eglGetCurrentContext()) || - !mEglSurface.equals(mEgl.eglGetCurrentSurface(EGL10.EGL_DRAW))) { - if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) { - throw new RuntimeException("eglMakeCurrent failed " - + GLUtils.getEGLErrorString(mEgl.eglGetError())); - } - } - } - - private void initGL() { - mEgl = (EGL10) EGLContext.getEGL(); - - mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY); - if (mEglDisplay == EGL10.EGL_NO_DISPLAY) { - throw new RuntimeException("eglGetDisplay failed " - + GLUtils.getEGLErrorString(mEgl.eglGetError())); - } - - int[] version = new int[2]; - if (!mEgl.eglInitialize(mEglDisplay, version)) { - throw new RuntimeException("eglInitialize failed " + - GLUtils.getEGLErrorString(mEgl.eglGetError())); - } - - mEglConfig = chooseEglConfig(); - if (mEglConfig == null) { - throw new RuntimeException("eglConfig not initialized"); - } - - mEglContext = createContext(mEgl, mEglDisplay, mEglConfig); - - mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, mSurface, null); - - if (mEglSurface == null || mEglSurface == EGL10.EGL_NO_SURFACE) { - int error = mEgl.eglGetError(); - if (error == EGL10.EGL_BAD_NATIVE_WINDOW) { - Log.e(TAG, "createWindowSurface returned EGL_BAD_NATIVE_WINDOW."); - return; - } - throw new RuntimeException("createWindowSurface failed " - + GLUtils.getEGLErrorString(error)); - } - - if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) { - throw new RuntimeException("eglMakeCurrent failed " - + GLUtils.getEGLErrorString(mEgl.eglGetError())); - } - - mGL = mEglContext.getGL(); - } - - - EGLContext createContext(EGL10 egl, EGLDisplay eglDisplay, EGLConfig eglConfig) { - int[] attrib_list = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE }; - return egl.eglCreateContext(eglDisplay, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list); - } - - private EGLConfig chooseEglConfig() { - int[] configsCount = new int[1]; - EGLConfig[] configs = new EGLConfig[1]; - int[] configSpec = getConfig(); - if (!mEgl.eglChooseConfig(mEglDisplay, configSpec, configs, 1, configsCount)) { - throw new IllegalArgumentException("eglChooseConfig failed " + - GLUtils.getEGLErrorString(mEgl.eglGetError())); - } else if (configsCount[0] > 0) { - return configs[0]; - } - return null; - } - - private static int[] getConfig() { - return new int[] { - EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, - EGL10.EGL_RED_SIZE, 8, - EGL10.EGL_GREEN_SIZE, 8, - EGL10.EGL_BLUE_SIZE, 8, - EGL10.EGL_ALPHA_SIZE, 8, - EGL10.EGL_DEPTH_SIZE, 0, - EGL10.EGL_STENCIL_SIZE, 0, - EGL10.EGL_NONE - }; - } + // The current GL renderer, or null if the dream is not running. + private ColorsGLRenderer mRenderer; @Override public void onCreate() { @@ -430,6 +55,12 @@ public class Colors extends Dream implements TextureView.SurfaceTextureListener mTextureView = new TextureView(this); mTextureView.setSurfaceTextureListener(this); + + if (mRendererHandlerThread == null) { + mRendererHandlerThread = new HandlerThread(TAG); + mRendererHandlerThread.start(); + mRendererHandler = new Handler(mRendererHandlerThread.getLooper()); + } } @Override @@ -441,36 +72,50 @@ public class Colors extends Dream implements TextureView.SurfaceTextureListener } @Override - public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { + public void onSurfaceTextureAvailable(final SurfaceTexture surface, + final int width, final int height) { LOG("onSurfaceTextureAvailable(%s, %d, %d)", surface, width, height); - mSurface = surface; - mWidth = width; - mHeight = height; - - new Thread() { + mRendererHandler.post(new Runnable() { @Override public void run() { - Looper.prepare(); - - mChoreographer = Choreographer.getInstance(); - mChoreographer.postFrameCallback(mFrameCallback); - - Looper.loop(); + if (mRenderer != null) { + mRenderer.stop(); + } + mRenderer = new ColorsGLRenderer(surface, width, height); + mRenderer.start(); } - }.start(); + }); } @Override - public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { + public void onSurfaceTextureSizeChanged(SurfaceTexture surface, + final int width, final int height) { LOG("onSurfaceTextureSizeChanged(%s, %d, %d)", surface, width, height); - mWidth = width; - mHeight = height; + + mRendererHandler.post(new Runnable() { + @Override + public void run() { + if (mRenderer != null) { + mRenderer.setSize(width, height); + } + } + }); } @Override public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { LOG("onSurfaceTextureDestroyed(%s)", surface); + + mRendererHandler.post(new Runnable() { + @Override + public void run() { + if (mRenderer != null) { + mRenderer.stop(); + mRenderer = null; + } + } + }); return false; } @@ -478,11 +123,4 @@ public class Colors extends Dream implements TextureView.SurfaceTextureListener public void onSurfaceTextureUpdated(SurfaceTexture surface) { LOG("onSurfaceTextureUpdated(%s)", surface); } - - @Override - public void finish() { - mStop = true; - finishGL(); - super.finish(); - } } |