DisplayDevice.cpp revision 00e8c7a88a5b9c4104a71013a713acd3e4d3b77b
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 186uint32_t DisplayDevice::getFlags() const 187{ 188 return mFlags; 189} 190 191void DisplayDevice::dump(String8& res) const 192{ 193 if (mFramebufferSurface != NULL) { 194 mFramebufferSurface->dump(res); 195 } 196} 197 198EGLBoolean DisplayDevice::makeCurrent(EGLDisplay dpy, 199 const sp<const DisplayDevice>& hw, EGLContext ctx) { 200 EGLBoolean result = EGL_TRUE; 201 EGLSurface sur = eglGetCurrentSurface(EGL_DRAW); 202 if (sur != hw->mSurface) { 203 result = eglMakeCurrent(dpy, hw->mSurface, hw->mSurface, ctx); 204 if (result == EGL_TRUE) { 205 GLsizei w = hw->mDisplayWidth; 206 GLsizei h = hw->mDisplayHeight; 207 glViewport(0, 0, w, h); 208 glMatrixMode(GL_PROJECTION); 209 glLoadIdentity(); 210 // put the origin in the left-bottom corner 211 glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h 212 } 213 } 214 return result; 215} 216 217// ---------------------------------------------------------------------------- 218 219void DisplayDevice::setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers) { 220 mVisibleLayersSortedByZ = layers; 221 mSecureLayerVisible = false; 222 size_t count = layers.size(); 223 for (size_t i=0 ; i<count ; i++) { 224 if (layers[i]->isSecure()) { 225 mSecureLayerVisible = true; 226 } 227 } 228} 229 230const Vector< sp<LayerBase> >& DisplayDevice::getVisibleLayersSortedByZ() const { 231 return mVisibleLayersSortedByZ; 232} 233 234bool DisplayDevice::getSecureLayerVisible() const { 235 return mSecureLayerVisible; 236} 237 238Region DisplayDevice::getDirtyRegion(bool repaintEverything) const { 239 Region dirty; 240 if (repaintEverything) { 241 dirty.set(getBounds()); 242 } else { 243 const Transform& planeTransform(mGlobalTransform); 244 dirty = planeTransform.transform(this->dirtyRegion); 245 dirty.andSelf(getBounds()); 246 } 247 return dirty; 248} 249 250// ---------------------------------------------------------------------------- 251 252bool DisplayDevice::canDraw() const { 253 return mScreenAcquired; 254} 255 256void DisplayDevice::releaseScreen() const { 257 mScreenAcquired = false; 258} 259 260void DisplayDevice::acquireScreen() const { 261 mScreenAcquired = true; 262} 263 264bool DisplayDevice::isScreenAcquired() const { 265 return mScreenAcquired; 266} 267 268// ---------------------------------------------------------------------------- 269 270void DisplayDevice::setLayerStack(uint32_t stack) { 271 mLayerStack = stack; 272 dirtyRegion.set(bounds()); 273} 274 275// ---------------------------------------------------------------------------- 276 277status_t DisplayDevice::orientationToTransfrom( 278 int orientation, int w, int h, Transform* tr) 279{ 280 uint32_t flags = 0; 281 switch (orientation) { 282 case DisplayState::eOrientationDefault: 283 flags = Transform::ROT_0; 284 break; 285 case DisplayState::eOrientation90: 286 flags = Transform::ROT_90; 287 break; 288 case DisplayState::eOrientation180: 289 flags = Transform::ROT_180; 290 break; 291 case DisplayState::eOrientation270: 292 flags = Transform::ROT_270; 293 break; 294 default: 295 return BAD_VALUE; 296 } 297 tr->set(flags, w, h); 298 return NO_ERROR; 299} 300 301void DisplayDevice::setProjection(int orientation, 302 const Rect& viewport, const Rect& frame) { 303 mOrientation = orientation; 304 mViewport = viewport; 305 mFrame = frame; 306 updateGeometryTransform(); 307} 308 309void DisplayDevice::updateGeometryTransform() { 310 int w = mDisplayWidth; 311 int h = mDisplayHeight; 312 Transform R, S; 313 if (DisplayDevice::orientationToTransfrom( 314 mOrientation, w, h, &R) == NO_ERROR) { 315 dirtyRegion.set(bounds()); 316 317 Rect viewport(mViewport); 318 Rect frame(mFrame); 319 320 if (!frame.isValid()) { 321 // the destination frame can be invalid if it has never been set, 322 // in that case we assume the whole display frame. 323 frame = Rect(w, h); 324 } 325 326 if (viewport.isEmpty()) { 327 // viewport can be invalid if it has never been set, in that case 328 // we assume the whole display size. 329 // it's also invalid to have an empty viewport, so we handle that 330 // case in the same way. 331 viewport = Rect(w, h); 332 if (R.getOrientation() & Transform::ROT_90) { 333 // viewport is always specified in the logical orientation 334 // of the display (ie: post-rotation). 335 swap(viewport.right, viewport.bottom); 336 } 337 } 338 339 float src_width = viewport.width(); 340 float src_height = viewport.height(); 341 float dst_width = frame.width(); 342 float dst_height = frame.height(); 343 if (src_width != src_height || dst_width != dst_height) { 344 float sx = dst_width / src_width; 345 float sy = dst_height / src_height; 346 S.set(sx, 0, 0, sy); 347 } 348 float src_x = viewport.left; 349 float src_y = viewport.top; 350 float dst_x = frame.left; 351 float dst_y = frame.top; 352 float tx = dst_x - src_x; 353 float ty = dst_y - src_y; 354 S.set(tx, ty); 355 356 // rotate first, followed by scaling 357 mGlobalTransform = S * R; 358 } 359} 360