| package com.android.camera.ui; |
| |
| import com.android.camera.Util; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.graphics.Color; |
| import android.graphics.Matrix; |
| import android.graphics.PixelFormat; |
| import android.opengl.GLSurfaceView; |
| import android.opengl.GLU; |
| import android.os.SystemClock; |
| import android.util.AttributeSet; |
| import android.util.DisplayMetrics; |
| import android.util.Log; |
| import android.view.MotionEvent; |
| import android.view.animation.Animation; |
| import android.view.animation.Transformation; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.util.ArrayList; |
| import java.util.Stack; |
| |
| import javax.microedition.khronos.egl.EGLConfig; |
| import javax.microedition.khronos.opengles.GL10; |
| import javax.microedition.khronos.opengles.GL11; |
| import javax.microedition.khronos.opengles.GL11Ext; |
| |
| // 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 { |
| private static final String TAG = "GLRootView"; |
| |
| private final boolean ENABLE_FPS_TEST = false; |
| private int mFrameCount = 0; |
| private long mFrameCountingStart = 0; |
| |
| private static final int VERTEX_BUFFER_SIZE = 8; |
| |
| private static final int FLAG_INITIALIZED = 1; |
| private static final int FLAG_NEED_LAYOUT = 2; |
| |
| private static boolean mTexture2DEnabled; |
| |
| private static float sPixelDensity = -1f; |
| |
| private GL11 mGL; |
| private GLView mContentView; |
| private DisplayMetrics mDisplayMetrics; |
| |
| private final ArrayList<Animation> mAnimations = new ArrayList<Animation>(); |
| |
| private final Stack<Transformation> mFreeTransform = |
| new Stack<Transformation>(); |
| |
| private final Transformation mTransformation = new Transformation(); |
| private final Stack<Transformation> mTransformStack = |
| new Stack<Transformation>(); |
| |
| private float mLastAlpha = mTransformation.getAlpha(); |
| |
| private final float mMatrixValues[] = new float[16]; |
| |
| private final float mCoordBuffer[] = new float[8]; |
| private final float mPointBuffer[] = new float[4]; |
| |
| private ByteBuffer mVertexBuffer; |
| private ByteBuffer mTexCoordBuffer; |
| |
| private int mFlags = FLAG_NEED_LAYOUT; |
| private long mAnimationTime; |
| |
| private CameraEGLConfigChooser mEglConfigChooser = new CameraEGLConfigChooser(); |
| |
| public GLRootView(Context context) { |
| this(context, null); |
| } |
| |
| public GLRootView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| initialize(); |
| } |
| |
| void registerLaunchedAnimation(Animation animation) { |
| // Register the newly launched animation so that we can set the start |
| // time more precisely. (Usually, it takes much longer for the first |
| // rendering, so we set the animation start time as the time we |
| // complete rendering) |
| mAnimations.add(animation); |
| } |
| |
| public long currentAnimationTimeMillis() { |
| return mAnimationTime; |
| } |
| |
| public synchronized static float dpToPixel(Context context, float dp) { |
| if (sPixelDensity < 0) { |
| DisplayMetrics metrics = new DisplayMetrics(); |
| ((Activity) context).getWindowManager() |
| .getDefaultDisplay().getMetrics(metrics); |
| sPixelDensity = metrics.density; |
| } |
| return sPixelDensity * dp; |
| } |
| |
| public static int dpToPixel(Context context, int dp) { |
| return (int)(dpToPixel(context, (float) dp) + .5f); |
| } |
| |
| public Transformation obtainTransformation() { |
| if (!mFreeTransform.isEmpty()) { |
| Transformation t = mFreeTransform.pop(); |
| t.clear(); |
| return t; |
| } |
| return new Transformation(); |
| } |
| |
| public void freeTransformation(Transformation freeTransformation) { |
| mFreeTransform.push(freeTransformation); |
| } |
| |
| public Transformation getTransformation() { |
| return mTransformation; |
| } |
| |
| public Transformation pushTransform() { |
| Transformation trans = obtainTransformation(); |
| trans.set(mTransformation); |
| mTransformStack.push(trans); |
| return mTransformation; |
| } |
| |
| public void popTransform() { |
| Transformation trans = mTransformStack.pop(); |
| mTransformation.set(trans); |
| freeTransformation(trans); |
| } |
| |
| public CameraEGLConfigChooser getEGLConfigChooser() { |
| return mEglConfigChooser; |
| } |
| |
| private void initialize() { |
| mFlags |= FLAG_INITIALIZED; |
| setEGLConfigChooser(mEglConfigChooser); |
| getHolder().setFormat(PixelFormat.TRANSLUCENT); |
| setZOrderOnTop(true); |
| |
| setRenderer(this); |
| |
| mVertexBuffer = ByteBuffer |
| .allocateDirect(VERTEX_BUFFER_SIZE * Float.SIZE / Byte.SIZE) |
| .order(ByteOrder.nativeOrder()); |
| mVertexBuffer.asFloatBuffer() |
| .put(new float[] {0, 0, 1, 0, 0, 1, 1, 1}) |
| .position(0); |
| mTexCoordBuffer = ByteBuffer |
| .allocateDirect(VERTEX_BUFFER_SIZE * Float.SIZE / Byte.SIZE) |
| .order(ByteOrder.nativeOrder()); |
| } |
| |
| public void setContentPane(GLView content) { |
| mContentView = content; |
| content.onAttachToRoot(this); |
| |
| // no parent for the content pane |
| content.onAddToParent(null); |
| requestLayoutContentPane(); |
| } |
| |
| public GLView getContentPane() { |
| return mContentView; |
| } |
| |
| void handleLowMemory() { |
| //TODO: delete texture from GL |
| } |
| |
| public synchronized void requestLayoutContentPane() { |
| 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(); |
| } |
| |
| private synchronized void layoutContentPane() { |
| mFlags &= ~FLAG_NEED_LAYOUT; |
| int width = getWidth(); |
| int height = getHeight(); |
| Log.v(TAG, "layout content pane " + width + "x" + height); |
| if (mContentView != null && width != 0 && height != 0) { |
| mContentView.layout(0, 0, width, height); |
| } |
| } |
| |
| @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 |
| 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; |
| |
| if (!ENABLE_FPS_TEST) { |
| setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY); |
| } else { |
| setRenderMode(GLSurfaceView.RENDERMODE_CONTINUOUSLY); |
| } |
| |
| // Disable unused state |
| gl.glDisable(GL11.GL_LIGHTING); |
| |
| // Enable used features |
| gl.glEnable(GL11.GL_BLEND); |
| gl.glEnable(GL11.GL_SCISSOR_TEST); |
| gl.glEnable(GL11.GL_STENCIL_TEST); |
| gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); |
| gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); |
| gl.glEnable(GL11.GL_TEXTURE_2D); |
| mTexture2DEnabled = true; |
| |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, |
| GL11.GL_TEXTURE_ENV_MODE, GL11.GL_REPLACE); |
| |
| // Set the background color |
| gl.glClearColor(0f, 0f, 0f, 0f); |
| gl.glClearStencil(0); |
| gl.glVertexPointer(2, GL11.GL_FLOAT, 0, mVertexBuffer); |
| gl.glTexCoordPointer(2, GL11.GL_FLOAT, 0, mTexCoordBuffer); |
| } |
| |
| /** |
| * Called when the OpenGL surface is recreated without destroying the |
| * context. |
| */ |
| // This is a GLSurfaceView.Renderer callback |
| public void onSurfaceChanged(GL10 gl1, int width, int height) { |
| Log.v(TAG, "onSurfaceChanged: " + width + "x" + height |
| + ", gl10: " + gl1.toString()); |
| GL11 gl = (GL11) gl1; |
| mGL = gl; |
| gl.glViewport(0, 0, width, height); |
| |
| gl.glMatrixMode(GL11.GL_PROJECTION); |
| gl.glLoadIdentity(); |
| |
| GLU.gluOrtho2D(gl, 0, width, 0, height); |
| Matrix matrix = mTransformation.getMatrix(); |
| matrix.reset(); |
| matrix.preTranslate(0, getHeight()); |
| matrix.preScale(1, -1); |
| } |
| |
| private void setAlphaValue(float alpha) { |
| if (mLastAlpha == alpha) return; |
| |
| GL11 gl = mGL; |
| mLastAlpha = alpha; |
| if (alpha >= 0.95f) { |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, |
| GL11.GL_TEXTURE_ENV_MODE, GL11.GL_REPLACE); |
| } else { |
| gl.glTexEnvf(GL11.GL_TEXTURE_ENV, |
| GL11.GL_TEXTURE_ENV_MODE, GL11.GL_MODULATE); |
| gl.glColor4f(alpha, alpha, alpha, alpha); |
| } |
| } |
| |
| public void drawRect(int x, int y, int width, int height) { |
| float matrix[] = mMatrixValues; |
| mTransformation.getMatrix().getValues(matrix); |
| drawRect(x, y, width, height, matrix); |
| } |
| |
| private void drawRect( |
| int x, int y, int width, int height, float matrix[]) { |
| GL11 gl = mGL; |
| gl.glPushMatrix(); |
| gl.glMultMatrixf(toGLMatrix(matrix), 0); |
| gl.glTranslatef(x, y, 0); |
| gl.glScalef(width, height, 1); |
| gl.glDrawArrays(GL11.GL_TRIANGLE_STRIP, 0, 4); |
| gl.glPopMatrix(); |
| } |
| |
| private float[] mapPoints(Matrix matrix, int x1, int y1, int x2, int y2) { |
| float[] point = mPointBuffer; |
| point[0] = x1; point[1] = y1; point[2] = x2; point[3] = y2; |
| matrix.mapPoints(point); |
| return point; |
| } |
| |
| public void clipRect(int x, int y, int width, int height) { |
| float point[] = mapPoints( |
| mTransformation.getMatrix(), x, y + height, x + width, y); |
| |
| // mMatrix could be a rotation matrix. In this case, we need to find |
| // the boundaries after rotation. (only handle 90 * n degrees) |
| if (point[0] > point[2]) { |
| x = (int) point[2]; |
| width = (int) point[0] - x; |
| } else { |
| x = (int) point[0]; |
| width = (int) point[2] - x; |
| } |
| if (point[1] > point[3]) { |
| y = (int) point[3]; |
| height = (int) point[1] - y; |
| } else { |
| y = (int) point[1]; |
| height = (int) point[3] - y; |
| } |
| mGL.glScissor(x, y, width, height); |
| } |
| |
| public void clearClip() { |
| mGL.glScissor(0, 0, getWidth(), getHeight()); |
| } |
| |
| private static float[] toGLMatrix(float v[]) { |
| v[15] = v[8]; v[13] = v[5]; v[5] = v[4]; v[4] = v[1]; |
| v[12] = v[2]; v[1] = v[3]; v[3] = v[6]; |
| v[2] = v[6] = v[8] = v[9] = 0; |
| v[10] = 1; |
| return v; |
| } |
| |
| public void drawColor(int x, int y, int width, int height, int color) { |
| drawColor(x, y, width, height, color, mTransformation.getAlpha()); |
| } |
| |
| public void drawColor(int x, int y, |
| int width, int height, int color, float alpha) { |
| GL11 gl = mGL; |
| if (mTexture2DEnabled) { |
| // Set mLastAlpha to an invalid value, so that it will reset again |
| // in setAlphaValue(float) later. |
| mLastAlpha = -1.0f; |
| mGL.glDisable(GL11.GL_TEXTURE_2D); |
| mTexture2DEnabled = false; |
| } |
| alpha /= 256.0f; |
| gl.glColor4f(Color.red(color) * alpha, Color.green(color) * alpha, |
| Color.blue(color) * alpha, Color.alpha(color) * alpha); |
| drawRect(x, y, width, height); |
| } |
| |
| public void drawTexture( |
| Texture texture, int x, int y, int width, int height, float alpha) { |
| |
| if (!mTexture2DEnabled) { |
| mGL.glEnable(GL11.GL_TEXTURE_2D); |
| mTexture2DEnabled = true; |
| } |
| |
| if (!texture.bind(this, mGL)) { |
| throw new RuntimeException("cannot bind" + texture.toString()); |
| } |
| if (width <= 0 || height <= 0) return ; |
| |
| Matrix matrix = mTransformation.getMatrix(); |
| matrix.getValues(mMatrixValues); |
| |
| // Test whether it has been rotated or flipped, if so, glDrawTexiOES |
| // won't work |
| if (isMatrixRotatedOrFlipped(mMatrixValues)) { |
| texture.getTextureCoords(mCoordBuffer, 0); |
| mTexCoordBuffer.asFloatBuffer().put(mCoordBuffer).position(0); |
| setAlphaValue(alpha); |
| drawRect(x, y, width, height, mMatrixValues); |
| } else { |
| // draw the rect from bottom-left to top-right |
| float points[] = mapPoints(matrix, x, y + height, x + width, y); |
| x = (int) points[0]; |
| y = (int) points[1]; |
| width = (int) points[2] - x; |
| height = (int) points[3] - y; |
| if (width > 0 && height > 0) { |
| setAlphaValue(alpha); |
| ((GL11Ext) mGL).glDrawTexiOES(x, y, 0, width, height); |
| } |
| } |
| } |
| |
| private static boolean isMatrixRotatedOrFlipped(float matrix[]) { |
| return matrix[Matrix.MSKEW_X] != 0 || matrix[Matrix.MSKEW_Y] != 0 |
| || matrix[Matrix.MSCALE_X] < 0 || matrix[Matrix.MSCALE_Y] > 0; |
| } |
| |
| public void drawTexture( |
| Texture texture, int x, int y, int width, int height) { |
| drawTexture(texture, x, y, width, height, mTransformation.getAlpha()); |
| } |
| |
| public synchronized void onDrawFrame(GL10 gl) { |
| if (ENABLE_FPS_TEST) { |
| long now = System.nanoTime(); |
| if (mFrameCountingStart == 0) { |
| mFrameCountingStart = now; |
| } else if ((now - mFrameCountingStart) > 1000000000) { |
| Log.v(TAG, "fps: " + (double) mFrameCount |
| * 1000000000 / (now - mFrameCountingStart)); |
| mFrameCountingStart = now; |
| mFrameCount = 0; |
| } |
| ++mFrameCount; |
| } |
| |
| if ((mFlags & FLAG_NEED_LAYOUT) != 0) layoutContentPane(); |
| clearClip(); |
| gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_STENCIL_BUFFER_BIT); |
| gl.glEnable(GL11.GL_BLEND); |
| gl.glBlendFunc(GL11.GL_ONE, GL11.GL_ONE_MINUS_SRC_ALPHA); |
| |
| mAnimationTime = SystemClock.uptimeMillis(); |
| if (mContentView != null) { |
| mContentView.render(GLRootView.this, (GL11) gl); |
| } |
| long now = SystemClock.uptimeMillis(); |
| for (Animation animation : mAnimations) { |
| animation.setStartTime(now); |
| } |
| mAnimations.clear(); |
| } |
| |
| @Override |
| public synchronized boolean dispatchTouchEvent(MotionEvent event) { |
| // If this has been detached from root, we don't need to handle event |
| return mContentView != null |
| ? mContentView.dispatchTouchEvent(event) |
| : false; |
| } |
| |
| public DisplayMetrics getDisplayMetrics() { |
| if (mDisplayMetrics == null) { |
| mDisplayMetrics = new DisplayMetrics(); |
| ((Activity) getContext()).getWindowManager() |
| .getDefaultDisplay().getMetrics(mDisplayMetrics); |
| } |
| return mDisplayMetrics; |
| } |
| |
| public void copyTexture2D( |
| RawTexture texture, int x, int y, int width, int height) |
| throws GLOutOfMemoryException { |
| Matrix matrix = mTransformation.getMatrix(); |
| matrix.getValues(mMatrixValues); |
| |
| if (isMatrixRotatedOrFlipped(mMatrixValues)) { |
| throw new IllegalArgumentException("cannot support rotated matrix"); |
| } |
| float points[] = mapPoints(matrix, x, y + height, x + width, y); |
| x = (int) points[0]; |
| y = (int) points[1]; |
| width = (int) points[2] - x; |
| height = (int) points[3] - y; |
| |
| GL11 gl = mGL; |
| int newWidth = Util.nextPowerOf2(width); |
| int newHeight = Util.nextPowerOf2(height); |
| int glError = GL11.GL_NO_ERROR; |
| |
| gl.glBindTexture(GL11.GL_TEXTURE_2D, texture.getId()); |
| |
| int[] cropRect = {0, 0, width, height}; |
| gl.glTexParameteriv(GL11.GL_TEXTURE_2D, |
| GL11Ext.GL_TEXTURE_CROP_RECT_OES, cropRect, 0); |
| gl.glTexParameteri(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP_TO_EDGE); |
| gl.glTexParameteri(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_WRAP_T, GL11.GL_CLAMP_TO_EDGE); |
| gl.glTexParameterf(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR); |
| gl.glTexParameterf(GL11.GL_TEXTURE_2D, |
| GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR); |
| gl.glCopyTexImage2D(GL11.GL_TEXTURE_2D, 0, |
| GL11.GL_RGBA, x, y, newWidth, newHeight, 0); |
| glError = gl.glGetError(); |
| |
| if (glError == GL11.GL_OUT_OF_MEMORY) { |
| throw new GLOutOfMemoryException(); |
| } |
| |
| if (glError != GL11.GL_NO_ERROR) { |
| throw new RuntimeException( |
| "Texture copy fail, glError " + glError); |
| } |
| |
| texture.setSize(width, height); |
| texture.setTextureSize(newWidth, newHeight); |
| } |
| |
| } |