| /* |
| * Copyright (C) 2010 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.gallery3d.ui; |
| |
| import com.android.gallery3d.anim.CanvasAnimation; |
| import com.android.gallery3d.common.Utils; |
| import com.android.gallery3d.util.GalleryUtils; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.graphics.PixelFormat; |
| import android.graphics.Rect; |
| import android.opengl.GLSurfaceView; |
| import android.os.Process; |
| import android.os.SystemClock; |
| import android.util.AttributeSet; |
| import android.util.DisplayMetrics; |
| import android.view.MotionEvent; |
| |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.concurrent.locks.ReentrantLock; |
| import javax.microedition.khronos.egl.EGLConfig; |
| import javax.microedition.khronos.opengles.GL10; |
| import javax.microedition.khronos.opengles.GL11; |
| |
| // The root component of all <code>GLView</code>s. The rendering is done in GL |
| // thread while the event handling is done in the main thread. To synchronize |
| // the two threads, the entry points of this package need to synchronize on the |
| // <code>GLRootView</code> instance unless it can be proved that the rendering |
| // thread won't access the same thing as the method. The entry points include: |
| // (1) The public methods of HeadUpDisplay |
| // (2) The public methods of CameraHeadUpDisplay |
| // (3) The overridden methods in GLRootView. |
| public class GLRootView extends GLSurfaceView |
| implements GLSurfaceView.Renderer, GLRoot { |
| private static final String TAG = "GLRootView"; |
| |
| private static final boolean DEBUG_FPS = false; |
| private int mFrameCount = 0; |
| private long mFrameCountingStart = 0; |
| |
| private static final boolean DEBUG_INVALIDATE = false; |
| private int mInvalidateColor = 0; |
| |
| private static final boolean DEBUG_DRAWING_STAT = false; |
| |
| private static final int FLAG_INITIALIZED = 1; |
| private static final int FLAG_NEED_LAYOUT = 2; |
| |
| private GL11 mGL; |
| private GLCanvasImpl mCanvas; |
| |
| private GLView mContentView; |
| private DisplayMetrics mDisplayMetrics; |
| |
| private int mFlags = FLAG_NEED_LAYOUT; |
| private volatile boolean mRenderRequested = false; |
| |
| private Rect mClipRect = new Rect(); |
| private int mClipRetryCount = 0; |
| |
| private final GalleryEGLConfigChooser mEglConfigChooser = |
| new GalleryEGLConfigChooser(); |
| |
| private final ArrayList<CanvasAnimation> mAnimations = |
| new ArrayList<CanvasAnimation>(); |
| |
| private final LinkedList<OnGLIdleListener> mIdleListeners = |
| new LinkedList<OnGLIdleListener>(); |
| |
| private final IdleRunner mIdleRunner = new IdleRunner(); |
| |
| private final ReentrantLock mRenderLock = new ReentrantLock(); |
| |
| private static final int TARGET_FRAME_TIME = 33; |
| private long mLastDrawFinishTime; |
| private boolean mInDownState = false; |
| |
| public GLRootView(Context context) { |
| this(context, null); |
| } |
| |
| public GLRootView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mFlags |= FLAG_INITIALIZED; |
| setBackgroundDrawable(null); |
| setEGLConfigChooser(mEglConfigChooser); |
| setRenderer(this); |
| getHolder().setFormat(PixelFormat.RGB_565); |
| |
| // Uncomment this to enable gl error check. |
| //setDebugFlags(DEBUG_CHECK_GL_ERROR); |
| } |
| |
| public GalleryEGLConfigChooser getEGLConfigChooser() { |
| return mEglConfigChooser; |
| } |
| |
| @Override |
| public boolean hasStencil() { |
| return getEGLConfigChooser().getStencilBits() > 0; |
| } |
| |
| @Override |
| public void registerLaunchedAnimation(CanvasAnimation animation) { |
| // Register the newly launched animation so that we can set the start |
| // time more precisely. (Usually, it takes much longer for first |
| // rendering, so we set the animation start time as the time we |
| // complete rendering) |
| mAnimations.add(animation); |
| } |
| |
| @Override |
| public void addOnGLIdleListener(OnGLIdleListener listener) { |
| synchronized (mIdleListeners) { |
| mIdleListeners.addLast(listener); |
| mIdleRunner.enable(); |
| } |
| } |
| |
| @Override |
| public void setContentPane(GLView content) { |
| if (mContentView == content) return; |
| if (mContentView != null) { |
| if (mInDownState) { |
| long now = SystemClock.uptimeMillis(); |
| MotionEvent cancelEvent = MotionEvent.obtain( |
| now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0); |
| mContentView.dispatchTouchEvent(cancelEvent); |
| cancelEvent.recycle(); |
| mInDownState = false; |
| } |
| mContentView.detachFromRoot(); |
| BasicTexture.yieldAllTextures(); |
| } |
| mContentView = content; |
| if (content != null) { |
| content.attachToRoot(this); |
| requestLayoutContentPane(); |
| } |
| } |
| |
| public GLView getContentPane() { |
| return mContentView; |
| } |
| |
| @Override |
| public void requestRender() { |
| if (DEBUG_INVALIDATE) { |
| StackTraceElement e = Thread.currentThread().getStackTrace()[4]; |
| String caller = e.getFileName() + ":" + e.getLineNumber() + " "; |
| Log.d(TAG, "invalidate: " + caller); |
| } |
| if (mRenderRequested) return; |
| mRenderRequested = true; |
| super.requestRender(); |
| } |
| |
| @Override |
| public void requestLayoutContentPane() { |
| mRenderLock.lock(); |
| try { |
| if (mContentView == null || (mFlags & FLAG_NEED_LAYOUT) != 0) return; |
| |
| // "View" system will invoke onLayout() for initialization(bug ?), we |
| // have to ignore it since the GLThread is not ready yet. |
| if ((mFlags & FLAG_INITIALIZED) == 0) return; |
| |
| mFlags |= FLAG_NEED_LAYOUT; |
| requestRender(); |
| } finally { |
| mRenderLock.unlock(); |
| } |
| } |
| |
| private void layoutContentPane() { |
| mFlags &= ~FLAG_NEED_LAYOUT; |
| int width = getWidth(); |
| int height = getHeight(); |
| Log.i(TAG, "layout content pane " + width + "x" + height); |
| if (mContentView != null && width != 0 && height != 0) { |
| mContentView.layout(0, 0, width, height); |
| } |
| // Uncomment this to dump the view hierarchy. |
| //mContentView.dumpTree(""); |
| } |
| |
| @Override |
| protected void onLayout( |
| boolean changed, int left, int top, int right, int bottom) { |
| if (changed) requestLayoutContentPane(); |
| } |
| |
| /** |
| * Called when the context is created, possibly after automatic destruction. |
| */ |
| // This is a GLSurfaceView.Renderer callback |
| @Override |
| public void onSurfaceCreated(GL10 gl1, EGLConfig config) { |
| GL11 gl = (GL11) gl1; |
| if (mGL != null) { |
| // The GL Object has changed |
| Log.i(TAG, "GLObject has changed from " + mGL + " to " + gl); |
| } |
| mGL = gl; |
| mCanvas = new GLCanvasImpl(gl); |
| if (!DEBUG_FPS) { |
| setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY); |
| } else { |
| setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY); |
| } |
| } |
| |
| /** |
| * Called when the OpenGL surface is recreated without destroying the |
| * context. |
| */ |
| // This is a GLSurfaceView.Renderer callback |
| @Override |
| public void onSurfaceChanged(GL10 gl1, int width, int height) { |
| Log.i(TAG, "onSurfaceChanged: " + width + "x" + height |
| + ", gl10: " + gl1.toString()); |
| Process.setThreadPriority(Process.THREAD_PRIORITY_DISPLAY); |
| GalleryUtils.setRenderThread(); |
| GL11 gl = (GL11) gl1; |
| Utils.assertTrue(mGL == gl); |
| |
| mCanvas.setSize(width, height); |
| |
| mClipRect.set(0, 0, width, height); |
| mClipRetryCount = 2; |
| } |
| |
| private void outputFps() { |
| long now = System.nanoTime(); |
| if (mFrameCountingStart == 0) { |
| mFrameCountingStart = now; |
| } else if ((now - mFrameCountingStart) > 1000000000) { |
| Log.d(TAG, "fps: " + (double) mFrameCount |
| * 1000000000 / (now - mFrameCountingStart)); |
| mFrameCountingStart = now; |
| mFrameCount = 0; |
| } |
| ++mFrameCount; |
| } |
| |
| @Override |
| public void onDrawFrame(GL10 gl) { |
| mRenderLock.lock(); |
| try { |
| onDrawFrameLocked(gl); |
| } finally { |
| mRenderLock.unlock(); |
| } |
| long end = SystemClock.uptimeMillis(); |
| |
| if (mLastDrawFinishTime != 0) { |
| long wait = mLastDrawFinishTime + TARGET_FRAME_TIME - end; |
| if (wait > 0) { |
| SystemClock.sleep(wait); |
| } |
| } |
| mLastDrawFinishTime = SystemClock.uptimeMillis(); |
| } |
| |
| private void onDrawFrameLocked(GL10 gl) { |
| if (DEBUG_FPS) outputFps(); |
| |
| // release the unbound textures and deleted buffers. |
| mCanvas.deleteRecycledResources(); |
| |
| // reset texture upload limit |
| UploadedTexture.resetUploadLimit(); |
| |
| mRenderRequested = false; |
| |
| if ((mFlags & FLAG_NEED_LAYOUT) != 0) layoutContentPane(); |
| |
| // OpenGL seems having a bug causing us not being able to reset the |
| // scissor box in "onSurfaceChanged()". We have to do it in the second |
| // onDrawFrame(). |
| if (mClipRetryCount > 0) { |
| --mClipRetryCount; |
| Rect clip = mClipRect; |
| gl.glScissor(clip.left, clip.top, clip.width(), clip.height()); |
| } |
| |
| mCanvas.setCurrentAnimationTimeMillis(SystemClock.uptimeMillis()); |
| if (mContentView != null) { |
| mContentView.render(mCanvas); |
| } |
| |
| if (!mAnimations.isEmpty()) { |
| long now = SystemClock.uptimeMillis(); |
| for (int i = 0, n = mAnimations.size(); i < n; i++) { |
| mAnimations.get(i).setStartTime(now); |
| } |
| mAnimations.clear(); |
| } |
| |
| if (UploadedTexture.uploadLimitReached()) { |
| requestRender(); |
| } |
| |
| synchronized (mIdleListeners) { |
| if (!mRenderRequested && !mIdleListeners.isEmpty()) { |
| mIdleRunner.enable(); |
| } |
| } |
| |
| if (DEBUG_INVALIDATE) { |
| mCanvas.fillRect(10, 10, 5, 5, mInvalidateColor); |
| mInvalidateColor = ~mInvalidateColor; |
| } |
| |
| if (DEBUG_DRAWING_STAT) { |
| mCanvas.dumpStatisticsAndClear(); |
| } |
| } |
| |
| @Override |
| public boolean dispatchTouchEvent(MotionEvent event) { |
| int action = event.getAction(); |
| if (action == MotionEvent.ACTION_CANCEL |
| || action == MotionEvent.ACTION_UP) { |
| mInDownState = false; |
| } else if (!mInDownState && action != MotionEvent.ACTION_DOWN) { |
| return false; |
| } |
| mRenderLock.lock(); |
| try { |
| // If this has been detached from root, we don't need to handle event |
| boolean handled = mContentView != null |
| && mContentView.dispatchTouchEvent(event); |
| if (action == MotionEvent.ACTION_DOWN && handled) { |
| mInDownState = true; |
| } |
| return handled; |
| } finally { |
| mRenderLock.unlock(); |
| } |
| } |
| |
| public DisplayMetrics getDisplayMetrics() { |
| if (mDisplayMetrics == null) { |
| mDisplayMetrics = new DisplayMetrics(); |
| ((Activity) getContext()).getWindowManager() |
| .getDefaultDisplay().getMetrics(mDisplayMetrics); |
| } |
| return mDisplayMetrics; |
| } |
| |
| public GLCanvas getCanvas() { |
| return mCanvas; |
| } |
| |
| private class IdleRunner implements Runnable { |
| // true if the idle runner is in the queue |
| private boolean mActive = false; |
| |
| @Override |
| public void run() { |
| OnGLIdleListener listener; |
| synchronized (mIdleListeners) { |
| mActive = false; |
| if (mRenderRequested) return; |
| if (mIdleListeners.isEmpty()) return; |
| listener = mIdleListeners.removeFirst(); |
| } |
| mRenderLock.lock(); |
| try { |
| if (!listener.onGLIdle(GLRootView.this, mCanvas)) return; |
| } finally { |
| mRenderLock.unlock(); |
| } |
| synchronized (mIdleListeners) { |
| mIdleListeners.addLast(listener); |
| enable(); |
| } |
| } |
| |
| public void enable() { |
| // Who gets the flag can add it to the queue |
| if (mActive) return; |
| mActive = true; |
| queueEvent(this); |
| } |
| } |
| |
| @Override |
| public void lockRenderThread() { |
| mRenderLock.lock(); |
| } |
| |
| @Override |
| public void unlockRenderThread() { |
| mRenderLock.unlock(); |
| } |
| } |