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 #ifndef ANDROID_SURFACE_FLINGER_H 18 #define ANDROID_SURFACE_FLINGER_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <EGL/egl.h> 24 25 /* 26 * NOTE: Make sure this file doesn't include anything from <gl/ > or <gl2/ > 27 */ 28 29 #include <cutils/compiler.h> 30 31 #include <utils/Atomic.h> 32 #include <utils/Errors.h> 33 #include <utils/KeyedVector.h> 34 #include <utils/RefBase.h> 35 #include <utils/SortedVector.h> 36 #include <utils/threads.h> 37 38 #include <binder/IMemory.h> 39 40 #include <ui/PixelFormat.h> 41 42 #include <gui/ISurfaceComposer.h> 43 #include <gui/ISurfaceComposerClient.h> 44 45 #include <hardware/hwcomposer_defs.h> 46 47 #include <private/gui/LayerState.h> 48 49 #include "Barrier.h" 50 #include "DisplayDevice.h" 51 #include "DispSync.h" 52 #include "FrameTracker.h" 53 #include "MessageQueue.h" 54 55 #include "DisplayHardware/HWComposer.h" 56 #include "Effects/Daltonizer.h" 57 58 namespace android { 59 60 // --------------------------------------------------------------------------- 61 62 class Client; 63 class DisplayEventConnection; 64 class EventThread; 65 class IGraphicBufferAlloc; 66 class Layer; 67 class LayerDim; 68 class Surface; 69 class RenderEngine; 70 class EventControlThread; 71 72 // --------------------------------------------------------------------------- 73 74 enum { 75 eTransactionNeeded = 0x01, 76 eTraversalNeeded = 0x02, 77 eDisplayTransactionNeeded = 0x04, 78 eTransactionMask = 0x07 79 }; 80 81 class SurfaceFlinger : public BnSurfaceComposer, 82 private IBinder::DeathRecipient, 83 private HWComposer::EventHandler 84 { 85 public: getServiceName()86 static char const* getServiceName() ANDROID_API { 87 return "SurfaceFlinger"; 88 } 89 90 SurfaceFlinger() ANDROID_API; 91 92 // must be called before clients can connect 93 void init() ANDROID_API; 94 95 // starts SurfaceFlinger main loop in the current thread 96 void run() ANDROID_API; 97 98 enum { 99 EVENT_VSYNC = HWC_EVENT_VSYNC 100 }; 101 102 // post an asynchronous message to the main thread 103 status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0); 104 105 // post a synchronous message to the main thread 106 status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0); 107 108 // force full composition on all displays 109 void repaintEverything(); 110 111 // returns the default Display getDefaultDisplayDevice()112 sp<const DisplayDevice> getDefaultDisplayDevice() const { 113 return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]); 114 } 115 116 // utility function to delete a texture on the main thread 117 void deleteTextureAsync(uint32_t texture); 118 119 // enable/disable h/w composer event 120 // TODO: this should be made accessible only to EventThread 121 void eventControl(int disp, int event, int enabled); 122 123 // called on the main thread by MessageQueue when an internal message 124 // is received 125 // TODO: this should be made accessible only to MessageQueue 126 void onMessageReceived(int32_t what); 127 128 // for debugging only 129 // TODO: this should be made accessible only to HWComposer 130 const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id); 131 getRenderEngine()132 RenderEngine& getRenderEngine() const { 133 return *mRenderEngine; 134 } 135 136 private: 137 friend class Client; 138 friend class DisplayEventConnection; 139 friend class Layer; 140 friend class SurfaceTextureLayer; 141 142 // This value is specified in number of frames. Log frame stats at most 143 // every half hour. 144 enum { LOG_FRAME_STATS_PERIOD = 30*60*60 }; 145 146 // We're reference counted, never destroy SurfaceFlinger directly 147 virtual ~SurfaceFlinger(); 148 149 /* ------------------------------------------------------------------------ 150 * Internal data structures 151 */ 152 153 class LayerVector : public SortedVector< sp<Layer> > { 154 public: 155 LayerVector(); 156 LayerVector(const LayerVector& rhs); 157 virtual int do_compare(const void* lhs, const void* rhs) const; 158 }; 159 160 struct DisplayDeviceState { 161 DisplayDeviceState(); 162 DisplayDeviceState(DisplayDevice::DisplayType type); isValidDisplayDeviceState163 bool isValid() const { return type >= 0; } isMainDisplayDisplayDeviceState164 bool isMainDisplay() const { return type == DisplayDevice::DISPLAY_PRIMARY; } isVirtualDisplayDisplayDeviceState165 bool isVirtualDisplay() const { return type >= DisplayDevice::DISPLAY_VIRTUAL; } 166 DisplayDevice::DisplayType type; 167 sp<IGraphicBufferProducer> surface; 168 uint32_t layerStack; 169 Rect viewport; 170 Rect frame; 171 uint8_t orientation; 172 String8 displayName; 173 bool isSecure; 174 }; 175 176 struct State { 177 LayerVector layersSortedByZ; 178 DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays; 179 }; 180 181 /* ------------------------------------------------------------------------ 182 * IBinder interface 183 */ 184 virtual status_t onTransact(uint32_t code, const Parcel& data, 185 Parcel* reply, uint32_t flags); 186 virtual status_t dump(int fd, const Vector<String16>& args); 187 188 /* ------------------------------------------------------------------------ 189 * ISurfaceComposer interface 190 */ 191 virtual sp<ISurfaceComposerClient> createConnection(); 192 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc(); 193 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure); 194 virtual void destroyDisplay(const sp<IBinder>& display); 195 virtual sp<IBinder> getBuiltInDisplay(int32_t id); 196 virtual void setTransactionState(const Vector<ComposerState>& state, 197 const Vector<DisplayState>& displays, uint32_t flags); 198 virtual void bootFinished(); 199 virtual bool authenticateSurfaceTexture( 200 const sp<IGraphicBufferProducer>& bufferProducer) const; 201 virtual sp<IDisplayEventConnection> createDisplayEventConnection(); 202 virtual status_t captureScreen(const sp<IBinder>& display, 203 const sp<IGraphicBufferProducer>& producer, 204 uint32_t reqWidth, uint32_t reqHeight, 205 uint32_t minLayerZ, uint32_t maxLayerZ); 206 // called when screen needs to turn off 207 virtual void blank(const sp<IBinder>& display); 208 // called when screen is turning back on 209 virtual void unblank(const sp<IBinder>& display); 210 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info); 211 212 /* ------------------------------------------------------------------------ 213 * DeathRecipient interface 214 */ 215 virtual void binderDied(const wp<IBinder>& who); 216 217 /* ------------------------------------------------------------------------ 218 * RefBase interface 219 */ 220 virtual void onFirstRef(); 221 222 /* ------------------------------------------------------------------------ 223 * HWComposer::EventHandler interface 224 */ 225 virtual void onVSyncReceived(int type, nsecs_t timestamp); 226 virtual void onHotplugReceived(int disp, bool connected); 227 228 /* ------------------------------------------------------------------------ 229 * Message handling 230 */ 231 void waitForEvent(); 232 void signalTransaction(); 233 void signalLayerUpdate(); 234 void signalRefresh(); 235 236 // called on the main thread in response to initializeDisplays() 237 void onInitializeDisplays(); 238 // called on the main thread in response to blank() 239 void onScreenReleased(const sp<const DisplayDevice>& hw); 240 // called on the main thread in response to unblank() 241 void onScreenAcquired(const sp<const DisplayDevice>& hw); 242 243 void handleMessageTransaction(); 244 void handleMessageInvalidate(); 245 void handleMessageRefresh(); 246 247 void handleTransaction(uint32_t transactionFlags); 248 void handleTransactionLocked(uint32_t transactionFlags); 249 250 /* handlePageFilp: this is were we latch a new buffer 251 * if available and compute the dirty region. 252 */ 253 void handlePageFlip(); 254 255 /* ------------------------------------------------------------------------ 256 * Transactions 257 */ 258 uint32_t getTransactionFlags(uint32_t flags); 259 uint32_t peekTransactionFlags(uint32_t flags); 260 uint32_t setTransactionFlags(uint32_t flags); 261 void commitTransaction(); 262 uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s); 263 uint32_t setDisplayStateLocked(const DisplayState& s); 264 265 /* ------------------------------------------------------------------------ 266 * Layer management 267 */ 268 status_t createLayer(const String8& name, const sp<Client>& client, 269 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags, 270 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp); 271 272 status_t createNormalLayer(const sp<Client>& client, const String8& name, 273 uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format, 274 sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp, 275 sp<Layer>* outLayer); 276 277 status_t createDimLayer(const sp<Client>& client, const String8& name, 278 uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle, 279 sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer); 280 281 // called in response to the window-manager calling 282 // ISurfaceComposerClient::destroySurface() 283 status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle); 284 285 // called when all clients have released all their references to 286 // this layer meaning it is entirely safe to destroy all 287 // resources associated to this layer. 288 status_t onLayerDestroyed(const wp<Layer>& layer); 289 290 // remove a layer from SurfaceFlinger immediately 291 status_t removeLayer(const sp<Layer>& layer); 292 293 // add a layer to SurfaceFlinger 294 void addClientLayer(const sp<Client>& client, 295 const sp<IBinder>& handle, 296 const sp<IGraphicBufferProducer>& gbc, 297 const sp<Layer>& lbc); 298 299 /* ------------------------------------------------------------------------ 300 * Boot animation, on/off animations and screen capture 301 */ 302 303 void startBootAnim(); 304 305 void renderScreenImplLocked( 306 const sp<const DisplayDevice>& hw, 307 uint32_t reqWidth, uint32_t reqHeight, 308 uint32_t minLayerZ, uint32_t maxLayerZ, 309 bool yswap); 310 311 status_t captureScreenImplLocked( 312 const sp<const DisplayDevice>& hw, 313 const sp<IGraphicBufferProducer>& producer, 314 uint32_t reqWidth, uint32_t reqHeight, 315 uint32_t minLayerZ, uint32_t maxLayerZ); 316 317 /* ------------------------------------------------------------------------ 318 * EGL 319 */ 320 static status_t selectConfigForAttribute(EGLDisplay dpy, 321 EGLint const* attrs, EGLint attribute, EGLint value, EGLConfig* outConfig); 322 static status_t selectEGLConfig(EGLDisplay disp, EGLint visualId, 323 EGLint renderableType, EGLConfig* config); 324 size_t getMaxTextureSize() const; 325 size_t getMaxViewportDims() const; 326 327 /* ------------------------------------------------------------------------ 328 * Display and layer stack management 329 */ 330 // called when starting, or restarting after system_server death 331 void initializeDisplays(); 332 333 // Create an IBinder for a builtin display and add it to current state 334 void createBuiltinDisplayLocked(DisplayDevice::DisplayType type); 335 336 // NOTE: can only be called from the main thread or with mStateLock held getDisplayDevice(const wp<IBinder> & dpy)337 sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const { 338 return mDisplays.valueFor(dpy); 339 } 340 341 // NOTE: can only be called from the main thread or with mStateLock held getDisplayDevice(const wp<IBinder> & dpy)342 sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) { 343 return mDisplays.valueFor(dpy); 344 } 345 346 // mark a region of a layer stack dirty. this updates the dirty 347 // region of all screens presenting this layer stack. 348 void invalidateLayerStack(uint32_t layerStack, const Region& dirty); 349 350 // allocate a h/w composer display id 351 int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type); 352 353 /* ------------------------------------------------------------------------ 354 * H/W composer 355 */ 356 getHwComposer()357 HWComposer& getHwComposer() const { return *mHwc; } 358 359 /* ------------------------------------------------------------------------ 360 * Compositing 361 */ 362 void invalidateHwcGeometry(); 363 static void computeVisibleRegions( 364 const LayerVector& currentLayers, uint32_t layerStack, 365 Region& dirtyRegion, Region& opaqueRegion); 366 367 void preComposition(); 368 void postComposition(); 369 void rebuildLayerStacks(); 370 void setUpHWComposer(); 371 void doComposition(); 372 void doDebugFlashRegions(); 373 void doDisplayComposition(const sp<const DisplayDevice>& hw, const Region& dirtyRegion); 374 void doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty); 375 376 void postFramebuffer(); 377 void drawWormhole(const sp<const DisplayDevice>& hw, const Region& region) const; 378 379 /* ------------------------------------------------------------------------ 380 * Display management 381 */ 382 383 /* ------------------------------------------------------------------------ 384 * VSync 385 */ 386 void enableHardwareVsync(); 387 void disableHardwareVsync(bool makeUnavailable); 388 void resyncToHardwareVsync(bool makeAvailable); 389 390 /* ------------------------------------------------------------------------ 391 * Debugging & dumpsys 392 */ 393 void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const; 394 void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const; 395 void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result); 396 void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const; 397 bool startDdmConnection(); 398 static void appendSfConfigString(String8& result); 399 void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr, 400 const sp<const DisplayDevice>& hw, 401 uint32_t minLayerZ, uint32_t maxLayerZ); 402 403 void logFrameStats(); 404 405 /* ------------------------------------------------------------------------ 406 * Attributes 407 */ 408 409 // access must be protected by mStateLock 410 mutable Mutex mStateLock; 411 State mCurrentState; 412 volatile int32_t mTransactionFlags; 413 Condition mTransactionCV; 414 bool mTransactionPending; 415 bool mAnimTransactionPending; 416 Vector< sp<Layer> > mLayersPendingRemoval; 417 SortedVector< wp<IBinder> > mGraphicBufferProducerList; 418 419 // protected by mStateLock (but we could use another lock) 420 bool mLayersRemoved; 421 422 // access must be protected by mInvalidateLock 423 volatile int32_t mRepaintEverything; 424 425 // constant members (no synchronization needed for access) 426 HWComposer* mHwc; 427 RenderEngine* mRenderEngine; 428 nsecs_t mBootTime; 429 bool mGpuToCpuSupported; 430 sp<EventThread> mEventThread; 431 sp<EventThread> mSFEventThread; 432 sp<EventControlThread> mEventControlThread; 433 EGLContext mEGLContext; 434 EGLConfig mEGLConfig; 435 EGLDisplay mEGLDisplay; 436 EGLint mEGLNativeVisualId; 437 sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES]; 438 439 // Can only accessed from the main thread, these members 440 // don't need synchronization 441 State mDrawingState; 442 bool mVisibleRegionsDirty; 443 bool mHwWorkListDirty; 444 bool mAnimCompositionPending; 445 446 // this may only be written from the main thread with mStateLock held 447 // it may be read from other threads with mStateLock held 448 DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays; 449 450 // don't use a lock for these, we don't care 451 int mDebugRegion; 452 int mDebugDDMS; 453 int mDebugDisableHWC; 454 int mDebugDisableTransformHint; 455 volatile nsecs_t mDebugInSwapBuffers; 456 nsecs_t mLastSwapBufferTime; 457 volatile nsecs_t mDebugInTransaction; 458 nsecs_t mLastTransactionTime; 459 bool mBootFinished; 460 461 // these are thread safe 462 mutable MessageQueue mEventQueue; 463 FrameTracker mAnimFrameTracker; 464 DispSync mPrimaryDispSync; 465 466 // protected by mDestroyedLayerLock; 467 mutable Mutex mDestroyedLayerLock; 468 Vector<Layer const *> mDestroyedLayers; 469 470 // protected by mHWVsyncLock 471 Mutex mHWVsyncLock; 472 bool mPrimaryHWVsyncEnabled; 473 bool mHWVsyncAvailable; 474 475 /* ------------------------------------------------------------------------ 476 * Feature prototyping 477 */ 478 479 Daltonizer mDaltonizer; 480 bool mDaltonize; 481 }; 482 483 }; // namespace android 484 485 #endif // ANDROID_SURFACE_FLINGER_H 486