DisplayDevice.cpp revision 52e21483fa48baeb4a88372d75e083bca2e92923
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 // Name the display. The name will be replaced shortly if the display 153 // was created with createDisplay(). 154 switch (mType) { 155 case DISPLAY_PRIMARY: 156 mDisplayName = "Built-in Screen"; 157 break; 158 case DISPLAY_EXTERNAL: 159 mDisplayName = "HDMI Screen"; 160 break; 161 default: 162 mDisplayName = "Virtual Screen"; // e.g. Overlay #n 163 break; 164 } 165 166 // initialize the display orientation transform. 167 setProjection(DisplayState::eOrientationDefault, mViewport, mFrame); 168} 169 170void DisplayDevice::setDisplayName(const String8& displayName) { 171 if (!displayName.isEmpty()) { 172 // never override the name with an empty name 173 mDisplayName = displayName; 174 } 175} 176 177uint32_t DisplayDevice::getPageFlipCount() const { 178 return mPageFlipCount; 179} 180 181status_t DisplayDevice::compositionComplete() const { 182 if (mFramebufferSurface == NULL) { 183 return NO_ERROR; 184 } 185 return mFramebufferSurface->compositionComplete(); 186} 187 188void DisplayDevice::flip(const Region& dirty) const 189{ 190 checkGLErrors(); 191 192 EGLDisplay dpy = mDisplay; 193 EGLSurface surface = mSurface; 194 195#ifdef EGL_ANDROID_swap_rectangle 196 if (mFlags & SWAP_RECTANGLE) { 197 const Region newDirty(dirty.intersect(bounds())); 198 const Rect b(newDirty.getBounds()); 199 eglSetSwapRectangleANDROID(dpy, surface, 200 b.left, b.top, b.width(), b.height()); 201 } 202#endif 203 204 mPageFlipCount++; 205} 206 207void DisplayDevice::swapBuffers(HWComposer& hwc) const { 208 EGLBoolean success = EGL_TRUE; 209 if (hwc.initCheck() != NO_ERROR) { 210 // no HWC, we call eglSwapBuffers() 211 success = eglSwapBuffers(mDisplay, mSurface); 212 } else { 213 // We have a valid HWC, but not all displays can use it, in particular 214 // the virtual displays are on their own. 215 // TODO: HWC 1.2 will allow virtual displays 216 if (mType >= DisplayDevice::DISPLAY_VIRTUAL) { 217 // always call eglSwapBuffers() for virtual displays 218 success = eglSwapBuffers(mDisplay, mSurface); 219 } else if (hwc.supportsFramebufferTarget()) { 220 // as of hwc 1.1 we always call eglSwapBuffers if we have some 221 // GLES layers 222 if (hwc.hasGlesComposition(mType)) { 223 success = eglSwapBuffers(mDisplay, mSurface); 224 } 225 } else { 226 // HWC doesn't have the framebuffer target, we don't call 227 // eglSwapBuffers(), since this is handled by HWComposer::commit(). 228 } 229 } 230 231 // TODO: we should at least handle EGL_CONTEXT_LOST, by recreating the 232 // context and resetting our state. 233 LOG_ALWAYS_FATAL_IF(!success, 234 "eglSwapBuffers(%p, %p) failed with 0x%8x", 235 mDisplay, mSurface, eglGetError()); 236} 237 238void DisplayDevice::onSwapBuffersCompleted(HWComposer& hwc) const { 239 if (hwc.initCheck() == NO_ERROR) { 240 if (hwc.supportsFramebufferTarget()) { 241 int fd = hwc.getAndResetReleaseFenceFd(mType); 242 mFramebufferSurface->setReleaseFenceFd(fd); 243 } 244 } 245} 246 247uint32_t DisplayDevice::getFlags() const 248{ 249 return mFlags; 250} 251 252EGLBoolean DisplayDevice::makeCurrent(EGLDisplay dpy, 253 const sp<const DisplayDevice>& hw, EGLContext ctx) { 254 EGLBoolean result = EGL_TRUE; 255 EGLSurface sur = eglGetCurrentSurface(EGL_DRAW); 256 if (sur != hw->mSurface) { 257 result = eglMakeCurrent(dpy, hw->mSurface, hw->mSurface, ctx); 258 if (result == EGL_TRUE) { 259 GLsizei w = hw->mDisplayWidth; 260 GLsizei h = hw->mDisplayHeight; 261 glViewport(0, 0, w, h); 262 glMatrixMode(GL_PROJECTION); 263 glLoadIdentity(); 264 // put the origin in the left-bottom corner 265 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 266 } 267 } 268 return result; 269} 270 271// ---------------------------------------------------------------------------- 272 273void DisplayDevice::setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers) { 274 mVisibleLayersSortedByZ = layers; 275 mSecureLayerVisible = false; 276 size_t count = layers.size(); 277 for (size_t i=0 ; i<count ; i++) { 278 if (layers[i]->isSecure()) { 279 mSecureLayerVisible = true; 280 } 281 } 282} 283 284const Vector< sp<LayerBase> >& DisplayDevice::getVisibleLayersSortedByZ() const { 285 return mVisibleLayersSortedByZ; 286} 287 288bool DisplayDevice::getSecureLayerVisible() const { 289 return mSecureLayerVisible; 290} 291 292Region DisplayDevice::getDirtyRegion(bool repaintEverything) const { 293 Region dirty; 294 if (repaintEverything) { 295 dirty.set(getBounds()); 296 } else { 297 const Transform& planeTransform(mGlobalTransform); 298 dirty = planeTransform.transform(this->dirtyRegion); 299 dirty.andSelf(getBounds()); 300 } 301 return dirty; 302} 303 304// ---------------------------------------------------------------------------- 305 306bool DisplayDevice::canDraw() const { 307 return mScreenAcquired; 308} 309 310void DisplayDevice::releaseScreen() const { 311 mScreenAcquired = false; 312} 313 314void DisplayDevice::acquireScreen() const { 315 mScreenAcquired = true; 316} 317 318bool DisplayDevice::isScreenAcquired() const { 319 return mScreenAcquired; 320} 321 322// ---------------------------------------------------------------------------- 323 324void DisplayDevice::setLayerStack(uint32_t stack) { 325 mLayerStack = stack; 326 dirtyRegion.set(bounds()); 327} 328 329// ---------------------------------------------------------------------------- 330 331status_t DisplayDevice::orientationToTransfrom( 332 int orientation, int w, int h, Transform* tr) 333{ 334 uint32_t flags = 0; 335 switch (orientation) { 336 case DisplayState::eOrientationDefault: 337 flags = Transform::ROT_0; 338 break; 339 case DisplayState::eOrientation90: 340 flags = Transform::ROT_90; 341 break; 342 case DisplayState::eOrientation180: 343 flags = Transform::ROT_180; 344 break; 345 case DisplayState::eOrientation270: 346 flags = Transform::ROT_270; 347 break; 348 default: 349 return BAD_VALUE; 350 } 351 tr->set(flags, w, h); 352 return NO_ERROR; 353} 354 355void DisplayDevice::setProjection(int orientation, 356 const Rect& viewport, const Rect& frame) { 357 mOrientation = orientation; 358 mViewport = viewport; 359 mFrame = frame; 360 updateGeometryTransform(); 361} 362 363void DisplayDevice::updateGeometryTransform() { 364 int w = mDisplayWidth; 365 int h = mDisplayHeight; 366 Transform TL, TP, R, S; 367 if (DisplayDevice::orientationToTransfrom( 368 mOrientation, w, h, &R) == NO_ERROR) { 369 dirtyRegion.set(bounds()); 370 371 Rect viewport(mViewport); 372 Rect frame(mFrame); 373 374 if (!frame.isValid()) { 375 // the destination frame can be invalid if it has never been set, 376 // in that case we assume the whole display frame. 377 frame = Rect(w, h); 378 } 379 380 if (viewport.isEmpty()) { 381 // viewport can be invalid if it has never been set, in that case 382 // we assume the whole display size. 383 // it's also invalid to have an empty viewport, so we handle that 384 // case in the same way. 385 viewport = Rect(w, h); 386 if (R.getOrientation() & Transform::ROT_90) { 387 // viewport is always specified in the logical orientation 388 // of the display (ie: post-rotation). 389 swap(viewport.right, viewport.bottom); 390 } 391 } 392 393 float src_width = viewport.width(); 394 float src_height = viewport.height(); 395 float dst_width = frame.width(); 396 float dst_height = frame.height(); 397 if (src_width != dst_width || src_height != dst_height) { 398 float sx = dst_width / src_width; 399 float sy = dst_height / src_height; 400 S.set(sx, 0, 0, sy); 401 } 402 403 float src_x = viewport.left; 404 float src_y = viewport.top; 405 float dst_x = frame.left; 406 float dst_y = frame.top; 407 TL.set(-src_x, -src_y); 408 TP.set(dst_x, dst_y); 409 410 // The viewport and frame are both in the logical orientation. 411 // Apply the logical translation, scale to physical size, apply the 412 // physical translation and finally rotate to the physical orientation. 413 mGlobalTransform = R * TP * S * TL; 414 415 const uint8_t type = mGlobalTransform.getType(); 416 mNeedsFiltering = (!mGlobalTransform.preserveRects() || 417 (type >= Transform::SCALE)); 418 } 419} 420 421void DisplayDevice::dump(String8& result, char* buffer, size_t SIZE) const { 422 const Transform& tr(mGlobalTransform); 423 snprintf(buffer, SIZE, 424 "+ DisplayDevice: %s\n" 425 " type=%x, layerStack=%u, (%4dx%4d), ANativeWindow=%p, orient=%2d (type=%08x), " 426 "flips=%u, secure=%d, acquired=%d, numLayers=%u\n" 427 " v:[%d,%d,%d,%d], f:[%d,%d,%d,%d], " 428 "transform:[[%0.3f,%0.3f,%0.3f][%0.3f,%0.3f,%0.3f][%0.3f,%0.3f,%0.3f]]\n", 429 mDisplayName.string(), mType, 430 mLayerStack, mDisplayWidth, mDisplayHeight, mNativeWindow.get(), 431 mOrientation, tr.getType(), getPageFlipCount(), 432 mSecureLayerVisible, mScreenAcquired, mVisibleLayersSortedByZ.size(), 433 mViewport.left, mViewport.top, mViewport.right, mViewport.bottom, 434 mFrame.left, mFrame.top, mFrame.right, mFrame.bottom, 435 tr[0][0], tr[1][0], tr[2][0], 436 tr[0][1], tr[1][1], tr[2][1], 437 tr[0][2], tr[1][2], tr[2][2]); 438 439 result.append(buffer); 440 441 String8 fbtargetDump; 442 if (mFramebufferSurface != NULL) { 443 mFramebufferSurface->dump(fbtargetDump); 444 result.append(fbtargetDump); 445 } 446} 447