Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.power; |
| 18 | |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 19 | import com.android.server.display.DisplayManagerService; |
| 20 | import com.android.server.display.DisplayTransactionListener; |
| 21 | |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 22 | import android.graphics.Bitmap; |
| 23 | import android.graphics.PixelFormat; |
| 24 | import android.opengl.EGL14; |
| 25 | import android.opengl.EGLConfig; |
| 26 | import android.opengl.EGLContext; |
| 27 | import android.opengl.EGLDisplay; |
| 28 | import android.opengl.EGLSurface; |
| 29 | import android.opengl.GLES10; |
| 30 | import android.opengl.GLUtils; |
| 31 | import android.os.Looper; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 32 | import android.util.FloatMath; |
| 33 | import android.util.Slog; |
| 34 | import android.view.Display; |
| 35 | import android.view.DisplayInfo; |
| 36 | import android.view.Surface; |
| 37 | import android.view.SurfaceSession; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 38 | |
| 39 | import java.io.PrintWriter; |
| 40 | import java.nio.ByteBuffer; |
| 41 | import java.nio.ByteOrder; |
| 42 | import java.nio.FloatBuffer; |
| 43 | |
| 44 | /** |
| 45 | * Bzzzoooop! *crackle* |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 46 | * <p> |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 47 | * Animates a screen transition from on to off or off to on by applying |
| 48 | * some GL transformations to a screenshot. |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 49 | * </p><p> |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 50 | * This component must only be created or accessed by the {@link Looper} thread |
| 51 | * that belongs to the {@link DisplayPowerController}. |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 52 | * </p> |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 53 | */ |
| 54 | final class ElectronBeam { |
| 55 | private static final String TAG = "ElectronBeam"; |
| 56 | |
| 57 | private static final boolean DEBUG = false; |
| 58 | |
| 59 | // The layer for the electron beam surface. |
| 60 | // This is currently hardcoded to be one layer above the boot animation. |
| 61 | private static final int ELECTRON_BEAM_LAYER = 0x40000001; |
| 62 | |
| 63 | // The relative proportion of the animation to spend performing |
| 64 | // the horizontal stretch effect. The remainder is spent performing |
| 65 | // the vertical stretch effect. |
Jeff Brown | 3c584f2 | 2012-10-10 14:36:00 -0700 | [diff] [blame] | 66 | private static final float HSTRETCH_DURATION = 0.5f; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 67 | private static final float VSTRETCH_DURATION = 1.0f - HSTRETCH_DURATION; |
| 68 | |
Jeff Brown | 78eb122 | 2012-10-10 18:27:44 -0700 | [diff] [blame] | 69 | // The number of frames to draw when preparing the animation so that it will |
| 70 | // be ready to run smoothly. We use 3 frames because we are triple-buffered. |
| 71 | // See code for details. |
| 72 | private static final int DEJANK_FRAMES = 3; |
| 73 | |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 74 | // Set to true when the animation context has been fully prepared. |
| 75 | private boolean mPrepared; |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 76 | private int mMode; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 77 | |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 78 | private final DisplayManagerService mDisplayManager; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 79 | private int mDisplayLayerStack; // layer stack associated with primary display |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 80 | private int mDisplayWidth; // real width, not rotated |
| 81 | private int mDisplayHeight; // real height, not rotated |
| 82 | private SurfaceSession mSurfaceSession; |
| 83 | private Surface mSurface; |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 84 | private NaturalSurfaceLayout mSurfaceLayout; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 85 | private EGLDisplay mEglDisplay; |
| 86 | private EGLConfig mEglConfig; |
| 87 | private EGLContext mEglContext; |
| 88 | private EGLSurface mEglSurface; |
| 89 | private boolean mSurfaceVisible; |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 90 | private float mSurfaceAlpha; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 91 | |
| 92 | // Texture names. We only use one texture, which contains the screenshot. |
| 93 | private final int[] mTexNames = new int[1]; |
| 94 | private boolean mTexNamesGenerated; |
| 95 | |
| 96 | // Vertex and corresponding texture coordinates. |
| 97 | // We have 4 2D vertices, so 8 elements. The vertices form a quad. |
| 98 | private final FloatBuffer mVertexBuffer = createNativeFloatBuffer(8); |
| 99 | private final FloatBuffer mTexCoordBuffer = createNativeFloatBuffer(8); |
| 100 | |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 101 | /** |
| 102 | * Animates an electron beam warming up. |
| 103 | */ |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 104 | public static final int MODE_WARM_UP = 0; |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 105 | |
| 106 | /** |
| 107 | * Animates an electron beam shutting off. |
| 108 | */ |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 109 | public static final int MODE_COOL_DOWN = 1; |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 110 | |
| 111 | /** |
| 112 | * Animates a simple dim layer to fade the contents of the screen in or out progressively. |
| 113 | */ |
| 114 | public static final int MODE_FADE = 2; |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 115 | |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 116 | public ElectronBeam(DisplayManagerService displayManager) { |
| 117 | mDisplayManager = displayManager; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Warms up the electron beam in preparation for turning on or off. |
| 122 | * This method prepares a GL context, and captures a screen shot. |
| 123 | * |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 124 | * @param mode The desired mode for the upcoming animation. |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 125 | * @return True if the electron beam is ready, false if it is uncontrollable. |
| 126 | */ |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 127 | public boolean prepare(int mode) { |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 128 | if (DEBUG) { |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 129 | Slog.d(TAG, "prepare: mode=" + mode); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 130 | } |
| 131 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 132 | mMode = mode; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 133 | |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 134 | // Get the display size and layer stack. |
| 135 | // This is not expected to change while the electron beam surface is showing. |
| 136 | DisplayInfo displayInfo = mDisplayManager.getDisplayInfo(Display.DEFAULT_DISPLAY); |
| 137 | mDisplayLayerStack = displayInfo.layerStack; |
| 138 | mDisplayWidth = displayInfo.getNaturalWidth(); |
| 139 | mDisplayHeight = displayInfo.getNaturalHeight(); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 140 | |
| 141 | // Prepare the surface for drawing. |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 142 | if (!tryPrepare()) { |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 143 | dismiss(); |
| 144 | return false; |
| 145 | } |
| 146 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 147 | // Done. |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 148 | mPrepared = true; |
Jeff Brown | 78eb122 | 2012-10-10 18:27:44 -0700 | [diff] [blame] | 149 | |
| 150 | // Dejanking optimization. |
| 151 | // Some GL drivers can introduce a lot of lag in the first few frames as they |
| 152 | // initialize their state and allocate graphics buffers for rendering. |
| 153 | // Work around this problem by rendering the first frame of the animation a few |
| 154 | // times. The rest of the animation should run smoothly thereafter. |
| 155 | // The frames we draw here aren't visible because we are essentially just |
| 156 | // painting the screenshot as-is. |
| 157 | if (mode == MODE_COOL_DOWN) { |
| 158 | for (int i = 0; i < DEJANK_FRAMES; i++) { |
| 159 | draw(1.0f); |
| 160 | } |
| 161 | } |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 162 | return true; |
| 163 | } |
| 164 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 165 | private boolean tryPrepare() { |
| 166 | if (createSurface()) { |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 167 | if (mMode == MODE_FADE) { |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 168 | return true; |
| 169 | } |
| 170 | return createEglContext() |
| 171 | && createEglSurface() |
| 172 | && captureScreenshotTextureAndSetViewport(); |
| 173 | } |
| 174 | return false; |
| 175 | } |
| 176 | |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 177 | /** |
| 178 | * Dismisses the electron beam animation surface and cleans up. |
| 179 | * |
| 180 | * To prevent stray photons from leaking out after the electron beam has been |
| 181 | * turned off, it is a good idea to defer dismissing the animation until the |
| 182 | * electron beam has been turned back on fully. |
| 183 | */ |
| 184 | public void dismiss() { |
| 185 | if (DEBUG) { |
| 186 | Slog.d(TAG, "dismiss"); |
| 187 | } |
| 188 | |
| 189 | destroyScreenshotTexture(); |
| 190 | destroyEglSurface(); |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 191 | destroySurface(); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 192 | mPrepared = false; |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Draws an animation frame showing the electron beam activated at the |
| 197 | * specified level. |
| 198 | * |
| 199 | * @param level The electron beam level. |
| 200 | * @return True if successful. |
| 201 | */ |
| 202 | public boolean draw(float level) { |
| 203 | if (DEBUG) { |
| 204 | Slog.d(TAG, "drawFrame: level=" + level); |
| 205 | } |
| 206 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 207 | if (!mPrepared) { |
| 208 | return false; |
| 209 | } |
| 210 | |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 211 | if (mMode == MODE_FADE) { |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 212 | return showSurface(1.0f - level); |
| 213 | } |
| 214 | |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 215 | if (!attachEglContext()) { |
| 216 | return false; |
| 217 | } |
| 218 | try { |
| 219 | // Clear frame to solid black. |
| 220 | GLES10.glClearColor(0f, 0f, 0f, 1f); |
| 221 | GLES10.glClear(GLES10.GL_COLOR_BUFFER_BIT); |
| 222 | |
| 223 | // Draw the frame. |
| 224 | if (level < HSTRETCH_DURATION) { |
| 225 | drawHStretch(1.0f - (level / HSTRETCH_DURATION)); |
| 226 | } else { |
| 227 | drawVStretch(1.0f - ((level - HSTRETCH_DURATION) / VSTRETCH_DURATION)); |
| 228 | } |
| 229 | if (checkGlErrors("drawFrame")) { |
| 230 | return false; |
| 231 | } |
| 232 | |
| 233 | EGL14.eglSwapBuffers(mEglDisplay, mEglSurface); |
| 234 | } finally { |
| 235 | detachEglContext(); |
| 236 | } |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 237 | return showSurface(1.0f); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | /** |
| 241 | * Draws a frame where the content of the electron beam is collapsing inwards upon |
| 242 | * itself vertically with red / green / blue channels dispersing and eventually |
| 243 | * merging down to a single horizontal line. |
| 244 | * |
| 245 | * @param stretch The stretch factor. 0.0 is no collapse, 1.0 is full collapse. |
| 246 | */ |
| 247 | private void drawVStretch(float stretch) { |
| 248 | // compute interpolation scale factors for each color channel |
| 249 | final float ar = scurve(stretch, 7.5f); |
| 250 | final float ag = scurve(stretch, 8.0f); |
| 251 | final float ab = scurve(stretch, 8.5f); |
| 252 | if (DEBUG) { |
| 253 | Slog.d(TAG, "drawVStretch: stretch=" + stretch |
| 254 | + ", ar=" + ar + ", ag=" + ag + ", ab=" + ab); |
| 255 | } |
| 256 | |
| 257 | // set blending |
| 258 | GLES10.glBlendFunc(GLES10.GL_ONE, GLES10.GL_ONE); |
| 259 | GLES10.glEnable(GLES10.GL_BLEND); |
| 260 | |
| 261 | // bind vertex buffer |
| 262 | GLES10.glVertexPointer(2, GLES10.GL_FLOAT, 0, mVertexBuffer); |
| 263 | GLES10.glEnableClientState(GLES10.GL_VERTEX_ARRAY); |
| 264 | |
| 265 | // bind texture and set blending for drawing planes |
| 266 | GLES10.glBindTexture(GLES10.GL_TEXTURE_2D, mTexNames[0]); |
| 267 | GLES10.glTexEnvx(GLES10.GL_TEXTURE_ENV, GLES10.GL_TEXTURE_ENV_MODE, |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 268 | mMode == MODE_WARM_UP ? GLES10.GL_MODULATE : GLES10.GL_REPLACE); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 269 | GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, |
| 270 | GLES10.GL_TEXTURE_MAG_FILTER, GLES10.GL_LINEAR); |
| 271 | GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, |
| 272 | GLES10.GL_TEXTURE_MIN_FILTER, GLES10.GL_LINEAR); |
| 273 | GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, |
| 274 | GLES10.GL_TEXTURE_WRAP_S, GLES10.GL_CLAMP_TO_EDGE); |
| 275 | GLES10.glTexParameterx(GLES10.GL_TEXTURE_2D, |
| 276 | GLES10.GL_TEXTURE_WRAP_T, GLES10.GL_CLAMP_TO_EDGE); |
| 277 | GLES10.glEnable(GLES10.GL_TEXTURE_2D); |
| 278 | GLES10.glTexCoordPointer(2, GLES10.GL_FLOAT, 0, mTexCoordBuffer); |
| 279 | GLES10.glEnableClientState(GLES10.GL_TEXTURE_COORD_ARRAY); |
| 280 | |
| 281 | // draw the red plane |
| 282 | setVStretchQuad(mVertexBuffer, mDisplayWidth, mDisplayHeight, ar); |
| 283 | GLES10.glColorMask(true, false, false, true); |
| 284 | GLES10.glDrawArrays(GLES10.GL_TRIANGLE_FAN, 0, 4); |
| 285 | |
| 286 | // draw the green plane |
| 287 | setVStretchQuad(mVertexBuffer, mDisplayWidth, mDisplayHeight, ag); |
| 288 | GLES10.glColorMask(false, true, false, true); |
| 289 | GLES10.glDrawArrays(GLES10.GL_TRIANGLE_FAN, 0, 4); |
| 290 | |
| 291 | // draw the blue plane |
| 292 | setVStretchQuad(mVertexBuffer, mDisplayWidth, mDisplayHeight, ab); |
| 293 | GLES10.glColorMask(false, false, true, true); |
| 294 | GLES10.glDrawArrays(GLES10.GL_TRIANGLE_FAN, 0, 4); |
| 295 | |
| 296 | // clean up after drawing planes |
| 297 | GLES10.glDisable(GLES10.GL_TEXTURE_2D); |
| 298 | GLES10.glDisableClientState(GLES10.GL_TEXTURE_COORD_ARRAY); |
| 299 | GLES10.glColorMask(true, true, true, true); |
| 300 | |
| 301 | // draw the white highlight (we use the last vertices) |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 302 | if (mMode == MODE_COOL_DOWN) { |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 303 | GLES10.glColor4f(ag, ag, ag, 1.0f); |
| 304 | GLES10.glDrawArrays(GLES10.GL_TRIANGLE_FAN, 0, 4); |
| 305 | } |
| 306 | |
| 307 | // clean up |
| 308 | GLES10.glDisableClientState(GLES10.GL_VERTEX_ARRAY); |
| 309 | GLES10.glDisable(GLES10.GL_BLEND); |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * Draws a frame where the electron beam has been stretched out into |
| 314 | * a thin white horizontal line that fades as it expands outwards. |
| 315 | * |
| 316 | * @param stretch The stretch factor. 0.0 is no stretch / no fade, |
| 317 | * 1.0 is maximum stretch / maximum fade. |
| 318 | */ |
| 319 | private void drawHStretch(float stretch) { |
| 320 | // compute interpolation scale factor |
| 321 | final float ag = scurve(stretch, 8.0f); |
| 322 | if (DEBUG) { |
| 323 | Slog.d(TAG, "drawHStretch: stretch=" + stretch + ", ag=" + ag); |
| 324 | } |
| 325 | |
| 326 | if (stretch < 1.0f) { |
| 327 | // bind vertex buffer |
| 328 | GLES10.glVertexPointer(2, GLES10.GL_FLOAT, 0, mVertexBuffer); |
| 329 | GLES10.glEnableClientState(GLES10.GL_VERTEX_ARRAY); |
| 330 | |
| 331 | // draw narrow fading white line |
| 332 | setHStretchQuad(mVertexBuffer, mDisplayWidth, mDisplayHeight, ag); |
| 333 | GLES10.glColor4f(1.0f - ag, 1.0f - ag, 1.0f - ag, 1.0f); |
| 334 | GLES10.glDrawArrays(GLES10.GL_TRIANGLE_FAN, 0, 4); |
| 335 | |
| 336 | // clean up |
| 337 | GLES10.glDisableClientState(GLES10.GL_VERTEX_ARRAY); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | private static void setVStretchQuad(FloatBuffer vtx, float dw, float dh, float a) { |
| 342 | final float w = dw + (dw * a); |
| 343 | final float h = dh - (dh * a); |
| 344 | final float x = (dw - w) * 0.5f; |
| 345 | final float y = (dh - h) * 0.5f; |
| 346 | setQuad(vtx, x, y, w, h); |
| 347 | } |
| 348 | |
| 349 | private static void setHStretchQuad(FloatBuffer vtx, float dw, float dh, float a) { |
| 350 | final float w = dw + (dw * a); |
| 351 | final float h = 1.0f; |
| 352 | final float x = (dw - w) * 0.5f; |
| 353 | final float y = (dh - h) * 0.5f; |
| 354 | setQuad(vtx, x, y, w, h); |
| 355 | } |
| 356 | |
| 357 | private static void setQuad(FloatBuffer vtx, float x, float y, float w, float h) { |
| 358 | if (DEBUG) { |
| 359 | Slog.d(TAG, "setQuad: x=" + x + ", y=" + y + ", w=" + w + ", h=" + h); |
| 360 | } |
| 361 | vtx.put(0, x); |
| 362 | vtx.put(1, y); |
| 363 | vtx.put(2, x); |
| 364 | vtx.put(3, y + h); |
| 365 | vtx.put(4, x + w); |
| 366 | vtx.put(5, y + h); |
| 367 | vtx.put(6, x + w); |
| 368 | vtx.put(7, y); |
| 369 | } |
| 370 | |
| 371 | private boolean captureScreenshotTextureAndSetViewport() { |
| 372 | // TODO: Use a SurfaceTexture to avoid the extra texture upload. |
| 373 | Bitmap bitmap = Surface.screenshot(mDisplayWidth, mDisplayHeight, |
| 374 | 0, ELECTRON_BEAM_LAYER - 1); |
| 375 | if (bitmap == null) { |
| 376 | Slog.e(TAG, "Could not take a screenshot!"); |
| 377 | return false; |
| 378 | } |
| 379 | try { |
| 380 | if (!attachEglContext()) { |
| 381 | return false; |
| 382 | } |
| 383 | try { |
| 384 | if (!mTexNamesGenerated) { |
| 385 | GLES10.glGenTextures(1, mTexNames, 0); |
| 386 | if (checkGlErrors("glGenTextures")) { |
| 387 | return false; |
| 388 | } |
| 389 | mTexNamesGenerated = true; |
| 390 | } |
| 391 | |
| 392 | GLES10.glBindTexture(GLES10.GL_TEXTURE_2D, mTexNames[0]); |
| 393 | if (checkGlErrors("glBindTexture")) { |
| 394 | return false; |
| 395 | } |
| 396 | |
| 397 | float u = 1.0f; |
| 398 | float v = 1.0f; |
| 399 | GLUtils.texImage2D(GLES10.GL_TEXTURE_2D, 0, bitmap, 0); |
| 400 | if (checkGlErrors("glTexImage2D, first try", false)) { |
| 401 | // Try a power of two size texture instead. |
| 402 | int tw = nextPowerOfTwo(mDisplayWidth); |
| 403 | int th = nextPowerOfTwo(mDisplayHeight); |
| 404 | int format = GLUtils.getInternalFormat(bitmap); |
| 405 | GLES10.glTexImage2D(GLES10.GL_TEXTURE_2D, 0, |
| 406 | format, tw, th, 0, |
| 407 | format, GLES10.GL_UNSIGNED_BYTE, null); |
| 408 | if (checkGlErrors("glTexImage2D, second try")) { |
| 409 | return false; |
| 410 | } |
| 411 | |
| 412 | GLUtils.texSubImage2D(GLES10.GL_TEXTURE_2D, 0, 0, 0, bitmap); |
| 413 | if (checkGlErrors("glTexSubImage2D")) { |
| 414 | return false; |
| 415 | } |
| 416 | |
| 417 | u = (float)mDisplayWidth / tw; |
| 418 | v = (float)mDisplayHeight / th; |
| 419 | } |
| 420 | |
| 421 | // Set up texture coordinates for a quad. |
| 422 | // We might need to change this if the texture ends up being |
| 423 | // a different size from the display for some reason. |
| 424 | mTexCoordBuffer.put(0, 0f); |
| 425 | mTexCoordBuffer.put(1, v); |
| 426 | mTexCoordBuffer.put(2, 0f); |
| 427 | mTexCoordBuffer.put(3, 0f); |
| 428 | mTexCoordBuffer.put(4, u); |
| 429 | mTexCoordBuffer.put(5, 0f); |
| 430 | mTexCoordBuffer.put(6, u); |
| 431 | mTexCoordBuffer.put(7, v); |
| 432 | |
| 433 | // Set up our viewport. |
| 434 | GLES10.glViewport(0, 0, mDisplayWidth, mDisplayHeight); |
| 435 | GLES10.glMatrixMode(GLES10.GL_PROJECTION); |
| 436 | GLES10.glLoadIdentity(); |
| 437 | GLES10.glOrthof(0, mDisplayWidth, 0, mDisplayHeight, 0, 1); |
| 438 | GLES10.glMatrixMode(GLES10.GL_MODELVIEW); |
| 439 | GLES10.glLoadIdentity(); |
| 440 | GLES10.glMatrixMode(GLES10.GL_TEXTURE); |
| 441 | GLES10.glLoadIdentity(); |
| 442 | } finally { |
| 443 | detachEglContext(); |
| 444 | } |
| 445 | } finally { |
| 446 | bitmap.recycle(); |
| 447 | } |
| 448 | return true; |
| 449 | } |
| 450 | |
| 451 | private void destroyScreenshotTexture() { |
| 452 | if (mTexNamesGenerated) { |
| 453 | mTexNamesGenerated = false; |
| 454 | if (attachEglContext()) { |
| 455 | try { |
| 456 | GLES10.glDeleteTextures(1, mTexNames, 0); |
| 457 | checkGlErrors("glDeleteTextures"); |
| 458 | } finally { |
| 459 | detachEglContext(); |
| 460 | } |
| 461 | } |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | private boolean createEglContext() { |
| 466 | if (mEglDisplay == null) { |
| 467 | mEglDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY); |
| 468 | if (mEglDisplay == EGL14.EGL_NO_DISPLAY) { |
| 469 | logEglError("eglGetDisplay"); |
| 470 | return false; |
| 471 | } |
| 472 | |
| 473 | int[] version = new int[2]; |
| 474 | if (!EGL14.eglInitialize(mEglDisplay, version, 0, version, 1)) { |
| 475 | mEglDisplay = null; |
| 476 | logEglError("eglInitialize"); |
| 477 | return false; |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | if (mEglConfig == null) { |
| 482 | int[] eglConfigAttribList = new int[] { |
| 483 | EGL14.EGL_RED_SIZE, 8, |
| 484 | EGL14.EGL_GREEN_SIZE, 8, |
| 485 | EGL14.EGL_BLUE_SIZE, 8, |
| 486 | EGL14.EGL_ALPHA_SIZE, 8, |
| 487 | EGL14.EGL_NONE |
| 488 | }; |
| 489 | int[] numEglConfigs = new int[1]; |
| 490 | EGLConfig[] eglConfigs = new EGLConfig[1]; |
| 491 | if (!EGL14.eglChooseConfig(mEglDisplay, eglConfigAttribList, 0, |
| 492 | eglConfigs, 0, eglConfigs.length, numEglConfigs, 0)) { |
| 493 | logEglError("eglChooseConfig"); |
| 494 | return false; |
| 495 | } |
| 496 | mEglConfig = eglConfigs[0]; |
| 497 | } |
| 498 | |
| 499 | if (mEglContext == null) { |
| 500 | int[] eglContextAttribList = new int[] { |
| 501 | EGL14.EGL_NONE |
| 502 | }; |
| 503 | mEglContext = EGL14.eglCreateContext(mEglDisplay, mEglConfig, |
| 504 | EGL14.EGL_NO_CONTEXT, eglContextAttribList, 0); |
| 505 | if (mEglContext == null) { |
| 506 | logEglError("eglCreateContext"); |
| 507 | return false; |
| 508 | } |
| 509 | } |
| 510 | return true; |
| 511 | } |
| 512 | |
| 513 | /* not used because it is too expensive to create / destroy contexts all of the time |
| 514 | private void destroyEglContext() { |
| 515 | if (mEglContext != null) { |
| 516 | if (!EGL14.eglDestroyContext(mEglDisplay, mEglContext)) { |
| 517 | logEglError("eglDestroyContext"); |
| 518 | } |
| 519 | mEglContext = null; |
| 520 | } |
| 521 | }*/ |
| 522 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 523 | private boolean createSurface() { |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 524 | if (mSurfaceSession == null) { |
| 525 | mSurfaceSession = new SurfaceSession(); |
| 526 | } |
| 527 | |
| 528 | Surface.openTransaction(); |
| 529 | try { |
| 530 | if (mSurface == null) { |
| 531 | try { |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 532 | int flags; |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 533 | if (mMode == MODE_FADE) { |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 534 | flags = Surface.FX_SURFACE_DIM | Surface.HIDDEN; |
| 535 | } else { |
| 536 | flags = Surface.OPAQUE | Surface.HIDDEN; |
| 537 | } |
Jeff Brown | 64a55af | 2012-08-26 02:47:39 -0700 | [diff] [blame] | 538 | mSurface = new Surface(mSurfaceSession, |
| 539 | "ElectronBeam", mDisplayWidth, mDisplayHeight, |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 540 | PixelFormat.OPAQUE, flags); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 541 | } catch (Surface.OutOfResourcesException ex) { |
| 542 | Slog.e(TAG, "Unable to create surface.", ex); |
| 543 | return false; |
| 544 | } |
| 545 | } |
| 546 | |
Jeff Brown | 64a55af | 2012-08-26 02:47:39 -0700 | [diff] [blame] | 547 | mSurface.setLayerStack(mDisplayLayerStack); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 548 | mSurface.setSize(mDisplayWidth, mDisplayHeight); |
| 549 | |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 550 | mSurfaceLayout = new NaturalSurfaceLayout(mDisplayManager, mSurface); |
| 551 | mSurfaceLayout.onDisplayTransaction(); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 552 | } finally { |
| 553 | Surface.closeTransaction(); |
| 554 | } |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 555 | return true; |
| 556 | } |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 557 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 558 | private boolean createEglSurface() { |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 559 | if (mEglSurface == null) { |
| 560 | int[] eglSurfaceAttribList = new int[] { |
| 561 | EGL14.EGL_NONE |
| 562 | }; |
| 563 | mEglSurface = EGL14.eglCreateWindowSurface(mEglDisplay, mEglConfig, mSurface, |
| 564 | eglSurfaceAttribList, 0); |
| 565 | if (mEglSurface == null) { |
| 566 | logEglError("eglCreateWindowSurface"); |
| 567 | return false; |
| 568 | } |
| 569 | } |
| 570 | return true; |
| 571 | } |
| 572 | |
| 573 | private void destroyEglSurface() { |
| 574 | if (mEglSurface != null) { |
| 575 | if (!EGL14.eglDestroySurface(mEglDisplay, mEglSurface)) { |
| 576 | logEglError("eglDestroySurface"); |
| 577 | } |
| 578 | mEglSurface = null; |
| 579 | } |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 580 | } |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 581 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 582 | private void destroySurface() { |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 583 | if (mSurface != null) { |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 584 | mSurfaceLayout.dispose(); |
| 585 | mSurfaceLayout = null; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 586 | Surface.openTransaction(); |
| 587 | try { |
| 588 | mSurface.destroy(); |
| 589 | } finally { |
| 590 | Surface.closeTransaction(); |
| 591 | } |
| 592 | mSurface = null; |
| 593 | mSurfaceVisible = false; |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 594 | mSurfaceAlpha = 0f; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 595 | } |
| 596 | } |
| 597 | |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 598 | private boolean showSurface(float alpha) { |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 599 | if (!mSurfaceVisible || mSurfaceAlpha != alpha) { |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 600 | Surface.openTransaction(); |
| 601 | try { |
| 602 | mSurface.setLayer(ELECTRON_BEAM_LAYER); |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 603 | mSurface.setAlpha(alpha); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 604 | mSurface.show(); |
| 605 | } finally { |
| 606 | Surface.closeTransaction(); |
| 607 | } |
| 608 | mSurfaceVisible = true; |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 609 | mSurfaceAlpha = alpha; |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 610 | } |
| 611 | return true; |
| 612 | } |
| 613 | |
| 614 | private boolean attachEglContext() { |
| 615 | if (mEglSurface == null) { |
| 616 | return false; |
| 617 | } |
| 618 | if (!EGL14.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) { |
| 619 | logEglError("eglMakeCurrent"); |
| 620 | return false; |
| 621 | } |
| 622 | return true; |
| 623 | } |
| 624 | |
| 625 | private void detachEglContext() { |
| 626 | if (mEglDisplay != null) { |
| 627 | EGL14.eglMakeCurrent(mEglDisplay, |
| 628 | EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT); |
| 629 | } |
| 630 | } |
| 631 | |
| 632 | /** |
| 633 | * Interpolates a value in the range 0 .. 1 along a sigmoid curve |
| 634 | * yielding a result in the range 0 .. 1 scaled such that: |
| 635 | * scurve(0) == 0, scurve(0.5) == 0.5, scurve(1) == 1. |
| 636 | */ |
| 637 | private static float scurve(float value, float s) { |
| 638 | // A basic sigmoid has the form y = 1.0f / FloatMap.exp(-x * s). |
| 639 | // Here we take the input datum and shift it by 0.5 so that the |
| 640 | // domain spans the range -0.5 .. 0.5 instead of 0 .. 1. |
| 641 | final float x = value - 0.5f; |
| 642 | |
| 643 | // Next apply the sigmoid function to the scaled value |
| 644 | // which produces a value in the range 0 .. 1 so we subtract |
| 645 | // 0.5 to get a value in the range -0.5 .. 0.5 instead. |
| 646 | final float y = sigmoid(x, s) - 0.5f; |
| 647 | |
| 648 | // To obtain the desired boundary conditions we need to scale |
| 649 | // the result so that it fills a range of -1 .. 1. |
| 650 | final float v = sigmoid(0.5f, s) - 0.5f; |
| 651 | |
| 652 | // And finally remap the value back to a range of 0 .. 1. |
| 653 | return y / v * 0.5f + 0.5f; |
| 654 | } |
| 655 | |
| 656 | private static float sigmoid(float x, float s) { |
| 657 | return 1.0f / (1.0f + FloatMath.exp(-x * s)); |
| 658 | } |
| 659 | |
| 660 | private static int nextPowerOfTwo(int value) { |
| 661 | return 1 << (32 - Integer.numberOfLeadingZeros(value)); |
| 662 | } |
| 663 | |
| 664 | private static FloatBuffer createNativeFloatBuffer(int size) { |
| 665 | ByteBuffer bb = ByteBuffer.allocateDirect(size * 4); |
| 666 | bb.order(ByteOrder.nativeOrder()); |
| 667 | return bb.asFloatBuffer(); |
| 668 | } |
| 669 | |
| 670 | private static void logEglError(String func) { |
| 671 | Slog.e(TAG, func + " failed: error " + EGL14.eglGetError(), new Throwable()); |
| 672 | } |
| 673 | |
| 674 | private static boolean checkGlErrors(String func) { |
| 675 | return checkGlErrors(func, true); |
| 676 | } |
| 677 | |
| 678 | private static boolean checkGlErrors(String func, boolean log) { |
| 679 | boolean hadError = false; |
| 680 | int error; |
| 681 | while ((error = GLES10.glGetError()) != GLES10.GL_NO_ERROR) { |
| 682 | if (log) { |
| 683 | Slog.e(TAG, func + " failed: error " + error, new Throwable()); |
| 684 | } |
| 685 | hadError = true; |
| 686 | } |
| 687 | return hadError; |
| 688 | } |
| 689 | |
| 690 | public void dump(PrintWriter pw) { |
| 691 | pw.println(); |
| 692 | pw.println("Electron Beam State:"); |
| 693 | pw.println(" mPrepared=" + mPrepared); |
Jeff Brown | 8b9cf1c | 2012-10-07 14:54:17 -0700 | [diff] [blame] | 694 | pw.println(" mMode=" + mMode); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 695 | pw.println(" mDisplayLayerStack=" + mDisplayLayerStack); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 696 | pw.println(" mDisplayWidth=" + mDisplayWidth); |
| 697 | pw.println(" mDisplayHeight=" + mDisplayHeight); |
| 698 | pw.println(" mSurfaceVisible=" + mSurfaceVisible); |
Jeff Brown | 252c206 | 2012-10-08 16:21:01 -0700 | [diff] [blame] | 699 | pw.println(" mSurfaceAlpha=" + mSurfaceAlpha); |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 700 | } |
Jeff Brown | 7f3994e | 2012-12-04 14:04:28 -0800 | [diff] [blame] | 701 | |
| 702 | /** |
| 703 | * Keeps a surface aligned with the natural orientation of the device. |
| 704 | * Updates the position and transformation of the matrix whenever the display |
| 705 | * is rotated. This is a little tricky because the display transaction |
| 706 | * callback can be invoked on any thread, not necessarily the thread that |
| 707 | * owns the electron beam. |
| 708 | */ |
| 709 | private static final class NaturalSurfaceLayout implements DisplayTransactionListener { |
| 710 | private final DisplayManagerService mDisplayManager; |
| 711 | private Surface mSurface; |
| 712 | |
| 713 | public NaturalSurfaceLayout(DisplayManagerService displayManager, Surface surface) { |
| 714 | mDisplayManager = displayManager; |
| 715 | mSurface = surface; |
| 716 | mDisplayManager.registerDisplayTransactionListener(this); |
| 717 | } |
| 718 | |
| 719 | public void dispose() { |
| 720 | synchronized (this) { |
| 721 | mSurface = null; |
| 722 | } |
| 723 | mDisplayManager.unregisterDisplayTransactionListener(this); |
| 724 | } |
| 725 | |
| 726 | @Override |
| 727 | public void onDisplayTransaction() { |
| 728 | synchronized (this) { |
| 729 | if (mSurface == null) { |
| 730 | return; |
| 731 | } |
| 732 | |
| 733 | DisplayInfo displayInfo = mDisplayManager.getDisplayInfo(Display.DEFAULT_DISPLAY); |
| 734 | switch (displayInfo.rotation) { |
| 735 | case Surface.ROTATION_0: |
| 736 | mSurface.setPosition(0, 0); |
| 737 | mSurface.setMatrix(1, 0, 0, 1); |
| 738 | break; |
| 739 | case Surface.ROTATION_90: |
| 740 | mSurface.setPosition(0, displayInfo.logicalHeight); |
| 741 | mSurface.setMatrix(0, -1, 1, 0); |
| 742 | break; |
| 743 | case Surface.ROTATION_180: |
| 744 | mSurface.setPosition(displayInfo.logicalWidth, displayInfo.logicalHeight); |
| 745 | mSurface.setMatrix(-1, 0, 0, -1); |
| 746 | break; |
| 747 | case Surface.ROTATION_270: |
| 748 | mSurface.setPosition(displayInfo.logicalWidth, 0); |
| 749 | mSurface.setMatrix(0, 1, -1, 0); |
| 750 | break; |
| 751 | } |
| 752 | } |
| 753 | } |
| 754 | } |
Jeff Brown | 9630704 | 2012-07-27 15:51:34 -0700 | [diff] [blame] | 755 | } |