DisplayDevice.cpp revision da27af9832a0170f1fc40ef3f21371c4d30d21b3
1/* 2 * Copyright (C) 2007 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#include <stdlib.h> 18#include <stdio.h> 19#include <string.h> 20#include <math.h> 21 22#include <cutils/properties.h> 23 24#include <utils/RefBase.h> 25#include <utils/Log.h> 26 27#include <ui/DisplayInfo.h> 28#include <ui/PixelFormat.h> 29 30#include <gui/SurfaceTextureClient.h> 31 32#include <GLES/gl.h> 33#include <EGL/egl.h> 34#include <EGL/eglext.h> 35 36#include <hardware/gralloc.h> 37 38#include "DisplayHardware/FramebufferSurface.h" 39#include "DisplayHardware/HWComposer.h" 40 41#include "clz.h" 42#include "DisplayDevice.h" 43#include "GLExtensions.h" 44#include "SurfaceFlinger.h" 45#include "LayerBase.h" 46 47// ---------------------------------------------------------------------------- 48using namespace android; 49// ---------------------------------------------------------------------------- 50 51static __attribute__((noinline)) 52void checkGLErrors() 53{ 54 do { 55 // there could be more than one error flag 56 GLenum error = glGetError(); 57 if (error == GL_NO_ERROR) 58 break; 59 ALOGE("GL error 0x%04x", int(error)); 60 } while(true); 61} 62 63// ---------------------------------------------------------------------------- 64 65/* 66 * Initialize the display to the specified values. 67 * 68 */ 69 70DisplayDevice::DisplayDevice( 71 const sp<SurfaceFlinger>& flinger, 72 DisplayType type, const wp<IBinder>& displayToken, 73 const sp<ANativeWindow>& nativeWindow, 74 const sp<FramebufferSurface>& framebufferSurface, 75 EGLConfig config) 76 : mFlinger(flinger), 77 mType(type), mHwcDisplayId(-1), 78 mNativeWindow(nativeWindow), 79 mFramebufferSurface(framebufferSurface), 80 mDisplay(EGL_NO_DISPLAY), 81 mSurface(EGL_NO_SURFACE), 82 mContext(EGL_NO_CONTEXT), 83 mDisplayWidth(), mDisplayHeight(), mFormat(), 84 mFlags(), 85 mPageFlipCount(), 86 mSecureLayerVisible(false), 87 mScreenAcquired(false), 88 mLayerStack(0), 89 mOrientation() 90{ 91 init(config); 92} 93 94DisplayDevice::~DisplayDevice() { 95 if (mSurface != EGL_NO_SURFACE) { 96 eglDestroySurface(mDisplay, mSurface); 97 mSurface = EGL_NO_SURFACE; 98 } 99} 100 101bool DisplayDevice::isValid() const { 102 return mFlinger != NULL; 103} 104 105int DisplayDevice::getWidth() const { 106 return mDisplayWidth; 107} 108 109int DisplayDevice::getHeight() const { 110 return mDisplayHeight; 111} 112 113PixelFormat DisplayDevice::getFormat() const { 114 return mFormat; 115} 116 117EGLSurface DisplayDevice::getEGLSurface() const { 118 return mSurface; 119} 120 121void DisplayDevice::init(EGLConfig config) 122{ 123 ANativeWindow* const window = mNativeWindow.get(); 124 125 int format; 126 window->query(window, NATIVE_WINDOW_FORMAT, &format); 127 128 /* 129 * Create our display's surface 130 */ 131 132 EGLSurface surface; 133 EGLint w, h; 134 EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); 135 surface = eglCreateWindowSurface(display, config, window, NULL); 136 eglQuerySurface(display, surface, EGL_WIDTH, &mDisplayWidth); 137 eglQuerySurface(display, surface, EGL_HEIGHT, &mDisplayHeight); 138 139 mDisplay = display; 140 mSurface = surface; 141 mFormat = format; 142 mPageFlipCount = 0; 143 mViewport.makeInvalid(); 144 mFrame.makeInvalid(); 145 146 // external displays are always considered enabled 147 mScreenAcquired = (mType >= DisplayDevice::NUM_DISPLAY_TYPES); 148 149 // get an h/w composer ID 150 mHwcDisplayId = mFlinger->allocateHwcDisplayId(mType); 151 152 // initialize the display orientation transform. 153 setProjection(DisplayState::eOrientationDefault, mViewport, mFrame); 154} 155 156uint32_t DisplayDevice::getPageFlipCount() const { 157 return mPageFlipCount; 158} 159 160status_t DisplayDevice::compositionComplete() const { 161 if (mFramebufferSurface == NULL) { 162 return NO_ERROR; 163 } 164 return mFramebufferSurface->compositionComplete(); 165} 166 167void DisplayDevice::flip(const Region& dirty) const 168{ 169 checkGLErrors(); 170 171 EGLDisplay dpy = mDisplay; 172 EGLSurface surface = mSurface; 173 174#ifdef EGL_ANDROID_swap_rectangle 175 if (mFlags & SWAP_RECTANGLE) { 176 const Region newDirty(dirty.intersect(bounds())); 177 const Rect b(newDirty.getBounds()); 178 eglSetSwapRectangleANDROID(dpy, surface, 179 b.left, b.top, b.width(), b.height()); 180 } 181#endif 182 183 mPageFlipCount++; 184} 185 186void DisplayDevice::swapBuffers(HWComposer& hwc) const { 187 if (hwc.initCheck() != NO_ERROR) { 188 // no HWC, we call eglSwapBuffers() 189 eglSwapBuffers(mDisplay, mSurface); 190 } else { 191 if (hwc.hasGlesComposition(mType)) { 192 if (hwc.supportsFramebufferTarget() || 193 mType >= DisplayDevice::DISPLAY_VIRTUAL) { 194 // as of hwc 1.1 we always call eglSwapBuffers, however, 195 // on older versions of HWC, we need to call it only on 196 // virtual displays 197 eglSwapBuffers(mDisplay, mSurface); 198 } 199 } 200 } 201} 202 203void DisplayDevice::onSwapBuffersCompleted(HWComposer& hwc) const { 204 if (hwc.initCheck() == NO_ERROR) { 205 if (hwc.supportsFramebufferTarget()) { 206 int fd = hwc.getAndResetReleaseFenceFd(mType); 207 mFramebufferSurface->setReleaseFenceFd(fd); 208 } 209 } 210} 211 212uint32_t DisplayDevice::getFlags() const 213{ 214 return mFlags; 215} 216 217void DisplayDevice::dump(String8& res) const 218{ 219 if (mFramebufferSurface != NULL) { 220 mFramebufferSurface->dump(res); 221 } 222} 223 224EGLBoolean DisplayDevice::makeCurrent(EGLDisplay dpy, 225 const sp<const DisplayDevice>& hw, EGLContext ctx) { 226 EGLBoolean result = EGL_TRUE; 227 EGLSurface sur = eglGetCurrentSurface(EGL_DRAW); 228 if (sur != hw->mSurface) { 229 result = eglMakeCurrent(dpy, hw->mSurface, hw->mSurface, ctx); 230 if (result == EGL_TRUE) { 231 GLsizei w = hw->mDisplayWidth; 232 GLsizei h = hw->mDisplayHeight; 233 glViewport(0, 0, w, h); 234 glMatrixMode(GL_PROJECTION); 235 glLoadIdentity(); 236 // put the origin in the left-bottom corner 237 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 238 } 239 } 240 return result; 241} 242 243// ---------------------------------------------------------------------------- 244 245void DisplayDevice::setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers) { 246 mVisibleLayersSortedByZ = layers; 247 mSecureLayerVisible = false; 248 size_t count = layers.size(); 249 for (size_t i=0 ; i<count ; i++) { 250 if (layers[i]->isSecure()) { 251 mSecureLayerVisible = true; 252 } 253 } 254} 255 256const Vector< sp<LayerBase> >& DisplayDevice::getVisibleLayersSortedByZ() const { 257 return mVisibleLayersSortedByZ; 258} 259 260bool DisplayDevice::getSecureLayerVisible() const { 261 return mSecureLayerVisible; 262} 263 264Region DisplayDevice::getDirtyRegion(bool repaintEverything) const { 265 Region dirty; 266 if (repaintEverything) { 267 dirty.set(getBounds()); 268 } else { 269 const Transform& planeTransform(mGlobalTransform); 270 dirty = planeTransform.transform(this->dirtyRegion); 271 dirty.andSelf(getBounds()); 272 } 273 return dirty; 274} 275 276// ---------------------------------------------------------------------------- 277 278bool DisplayDevice::canDraw() const { 279 return mScreenAcquired; 280} 281 282void DisplayDevice::releaseScreen() const { 283 mScreenAcquired = false; 284} 285 286void DisplayDevice::acquireScreen() const { 287 mScreenAcquired = true; 288} 289 290bool DisplayDevice::isScreenAcquired() const { 291 return mScreenAcquired; 292} 293 294// ---------------------------------------------------------------------------- 295 296void DisplayDevice::setLayerStack(uint32_t stack) { 297 mLayerStack = stack; 298 dirtyRegion.set(bounds()); 299} 300 301// ---------------------------------------------------------------------------- 302 303status_t DisplayDevice::orientationToTransfrom( 304 int orientation, int w, int h, Transform* tr) 305{ 306 uint32_t flags = 0; 307 switch (orientation) { 308 case DisplayState::eOrientationDefault: 309 flags = Transform::ROT_0; 310 break; 311 case DisplayState::eOrientation90: 312 flags = Transform::ROT_90; 313 break; 314 case DisplayState::eOrientation180: 315 flags = Transform::ROT_180; 316 break; 317 case DisplayState::eOrientation270: 318 flags = Transform::ROT_270; 319 break; 320 default: 321 return BAD_VALUE; 322 } 323 tr->set(flags, w, h); 324 return NO_ERROR; 325} 326 327void DisplayDevice::setProjection(int orientation, 328 const Rect& viewport, const Rect& frame) { 329 mOrientation = orientation; 330 mViewport = viewport; 331 mFrame = frame; 332 updateGeometryTransform(); 333} 334 335void DisplayDevice::updateGeometryTransform() { 336 int w = mDisplayWidth; 337 int h = mDisplayHeight; 338 Transform TL, TP, R, S; 339 if (DisplayDevice::orientationToTransfrom( 340 mOrientation, w, h, &R) == NO_ERROR) { 341 dirtyRegion.set(bounds()); 342 343 Rect viewport(mViewport); 344 Rect frame(mFrame); 345 346 if (!frame.isValid()) { 347 // the destination frame can be invalid if it has never been set, 348 // in that case we assume the whole display frame. 349 frame = Rect(w, h); 350 } 351 352 if (viewport.isEmpty()) { 353 // viewport can be invalid if it has never been set, in that case 354 // we assume the whole display size. 355 // it's also invalid to have an empty viewport, so we handle that 356 // case in the same way. 357 viewport = Rect(w, h); 358 if (R.getOrientation() & Transform::ROT_90) { 359 // viewport is always specified in the logical orientation 360 // of the display (ie: post-rotation). 361 swap(viewport.right, viewport.bottom); 362 } 363 } 364 365 float src_width = viewport.width(); 366 float src_height = viewport.height(); 367 float dst_width = frame.width(); 368 float dst_height = frame.height(); 369 if (src_width != dst_width || src_height != dst_height) { 370 float sx = dst_width / src_width; 371 float sy = dst_height / src_height; 372 S.set(sx, 0, 0, sy); 373 } 374 375 float src_x = viewport.left; 376 float src_y = viewport.top; 377 float dst_x = frame.left; 378 float dst_y = frame.top; 379 TL.set(-src_x, -src_y); 380 TP.set(dst_x, dst_y); 381 382 // The viewport and frame are both in the logical orientation. 383 // Apply the logical translation, scale to physical size, apply the 384 // physical translation and finally rotate to the physical orientation. 385 mGlobalTransform = R * TP * S * TL; 386 } 387} 388