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 <utils/Atomic.h> 24 #include <utils/Errors.h> 25 #include <utils/KeyedVector.h> 26 #include <utils/RefBase.h> 27 #include <utils/SortedVector.h> 28 #include <utils/threads.h> 29 30 #include <binder/BinderService.h> 31 #include <binder/IMemory.h> 32 33 #include <ui/PixelFormat.h> 34 #include <surfaceflinger/IGraphicBufferAlloc.h> 35 #include <surfaceflinger/ISurfaceComposer.h> 36 #include <surfaceflinger/ISurfaceComposerClient.h> 37 38 #include "Barrier.h" 39 #include "Layer.h" 40 41 #include "MessageQueue.h" 42 43 namespace android { 44 45 // --------------------------------------------------------------------------- 46 47 class Client; 48 class DisplayHardware; 49 class Layer; 50 class LayerDim; 51 class LayerScreenshot; 52 struct surface_flinger_cblk_t; 53 54 #define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) 55 #define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) 56 57 // --------------------------------------------------------------------------- 58 59 class Client : public BnSurfaceComposerClient 60 { 61 public: 62 Client(const sp<SurfaceFlinger>& flinger); 63 ~Client(); 64 65 status_t initCheck() const; 66 67 // protected by SurfaceFlinger::mStateLock 68 size_t attachLayer(const sp<LayerBaseClient>& layer); 69 void detachLayer(const LayerBaseClient* layer); 70 sp<LayerBaseClient> getLayerUser(int32_t i) const; 71 72 private: 73 // ISurfaceComposerClient interface 74 virtual sp<ISurface> createSurface( 75 surface_data_t* params, const String8& name, 76 DisplayID display, uint32_t w, uint32_t h,PixelFormat format, 77 uint32_t flags); 78 virtual status_t destroySurface(SurfaceID surfaceId); 79 virtual status_t onTransact( 80 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 81 82 // constant 83 sp<SurfaceFlinger> mFlinger; 84 85 // protected by mLock 86 DefaultKeyedVector< size_t, wp<LayerBaseClient> > mLayers; 87 size_t mNameGenerator; 88 89 // thread-safe 90 mutable Mutex mLock; 91 }; 92 93 class GraphicBufferAlloc : public BnGraphicBufferAlloc 94 { 95 public: 96 GraphicBufferAlloc(); 97 virtual ~GraphicBufferAlloc(); 98 virtual sp<GraphicBuffer> createGraphicBuffer(uint32_t w, uint32_t h, 99 PixelFormat format, uint32_t usage, status_t* error); 100 }; 101 102 // --------------------------------------------------------------------------- 103 104 class GraphicPlane 105 { 106 public: 107 static status_t orientationToTransfrom(int orientation, int w, int h, 108 Transform* tr); 109 110 GraphicPlane(); 111 ~GraphicPlane(); 112 113 bool initialized() const; 114 115 void setDisplayHardware(DisplayHardware *); 116 status_t setOrientation(int orientation); 117 int getOrientation() const { return mOrientation; } 118 int getWidth() const; 119 int getHeight() const; 120 121 const DisplayHardware& displayHardware() const; 122 DisplayHardware& editDisplayHardware(); 123 const Transform& transform() const; 124 EGLDisplay getEGLDisplay() const; 125 126 private: 127 GraphicPlane(const GraphicPlane&); 128 GraphicPlane operator = (const GraphicPlane&); 129 130 DisplayHardware* mHw; 131 Transform mGlobalTransform; 132 Transform mDisplayTransform; 133 int mOrientation; 134 float mDisplayWidth; 135 float mDisplayHeight; 136 int mWidth; 137 int mHeight; 138 }; 139 140 // --------------------------------------------------------------------------- 141 142 enum { 143 eTransactionNeeded = 0x01, 144 eTraversalNeeded = 0x02 145 }; 146 147 class SurfaceFlinger : 148 public BinderService<SurfaceFlinger>, 149 public BnSurfaceComposer, 150 public IBinder::DeathRecipient, 151 protected Thread 152 { 153 public: 154 static char const* getServiceName() { return "SurfaceFlinger"; } 155 156 SurfaceFlinger(); 157 virtual ~SurfaceFlinger(); 158 void init(); 159 160 virtual status_t onTransact( 161 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 162 163 virtual status_t dump(int fd, const Vector<String16>& args); 164 165 // ISurfaceComposer interface 166 virtual sp<ISurfaceComposerClient> createConnection(); 167 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc(); 168 virtual sp<IMemoryHeap> getCblk() const; 169 virtual void bootFinished(); 170 virtual void setTransactionState(const Vector<ComposerState>& state, 171 int orientation, uint32_t flags); 172 virtual int setOrientation(DisplayID dpy, int orientation, uint32_t flags); 173 virtual bool authenticateSurfaceTexture(const sp<ISurfaceTexture>& surface) const; 174 175 virtual status_t captureScreen(DisplayID dpy, 176 sp<IMemoryHeap>* heap, 177 uint32_t* width, uint32_t* height, 178 PixelFormat* format, uint32_t reqWidth, uint32_t reqHeight, 179 uint32_t minLayerZ, uint32_t maxLayerZ); 180 181 virtual status_t turnElectronBeamOff(int32_t mode); 182 virtual status_t turnElectronBeamOn(int32_t mode); 183 184 void screenReleased(DisplayID dpy); 185 void screenAcquired(DisplayID dpy); 186 187 status_t renderScreenToTexture(DisplayID dpy, 188 GLuint* textureName, GLfloat* uOut, GLfloat* vOut); 189 status_t renderScreenToTextureLocked(DisplayID dpy, 190 GLuint* textureName, GLfloat* uOut, GLfloat* vOut); 191 192 status_t postMessageAsync(const sp<MessageBase>& msg, 193 nsecs_t reltime=0, uint32_t flags = 0); 194 195 status_t postMessageSync(const sp<MessageBase>& msg, 196 nsecs_t reltime=0, uint32_t flags = 0); 197 198 status_t removeLayer(const sp<LayerBase>& layer); 199 status_t addLayer(const sp<LayerBase>& layer); 200 status_t invalidateLayerVisibility(const sp<LayerBase>& layer); 201 void invalidateHwcGeometry(); 202 203 sp<Layer> getLayer(const sp<ISurface>& sur) const; 204 205 GLuint getProtectedTexName() const { return mProtectedTexName; } 206 207 208 class MessageDestroyGLTexture : public MessageBase { 209 GLuint texture; 210 public: 211 MessageDestroyGLTexture(GLuint texture) : texture(texture) { } 212 virtual bool handler() { 213 glDeleteTextures(1, &texture); 214 return true; 215 } 216 }; 217 218 219 private: 220 // DeathRecipient interface 221 virtual void binderDied(const wp<IBinder>& who); 222 223 private: 224 friend class Client; 225 friend class LayerBase; 226 friend class LayerBaseClient; 227 friend class Layer; 228 229 sp<ISurface> createSurface( 230 ISurfaceComposerClient::surface_data_t* params, 231 const String8& name, 232 const sp<Client>& client, 233 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 234 uint32_t flags); 235 236 sp<Layer> createNormalSurface( 237 const sp<Client>& client, DisplayID display, 238 uint32_t w, uint32_t h, uint32_t flags, 239 PixelFormat& format); 240 241 sp<LayerDim> createDimSurface( 242 const sp<Client>& client, DisplayID display, 243 uint32_t w, uint32_t h, uint32_t flags); 244 245 sp<LayerScreenshot> createScreenshotSurface( 246 const sp<Client>& client, DisplayID display, 247 uint32_t w, uint32_t h, uint32_t flags); 248 249 status_t removeSurface(const sp<Client>& client, SurfaceID sid); 250 status_t destroySurface(const wp<LayerBaseClient>& layer); 251 uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s); 252 253 class LayerVector : public SortedVector< sp<LayerBase> > { 254 public: 255 LayerVector() { } 256 LayerVector(const LayerVector& rhs) : SortedVector< sp<LayerBase> >(rhs) { } 257 virtual int do_compare(const void* lhs, const void* rhs) const { 258 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 259 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 260 // sort layers by Z order 261 uint32_t lz = l->currentState().z; 262 uint32_t rz = r->currentState().z; 263 // then by sequence, so we get a stable ordering 264 return (lz != rz) ? (lz - rz) : (l->sequence - r->sequence); 265 } 266 }; 267 268 struct State { 269 State() { 270 orientation = ISurfaceComposer::eOrientationDefault; 271 } 272 LayerVector layersSortedByZ; 273 uint8_t orientation; 274 uint8_t orientationFlags; 275 }; 276 277 virtual bool threadLoop(); 278 virtual status_t readyToRun(); 279 virtual void onFirstRef(); 280 281 public: // hack to work around gcc 4.0.3 bug 282 const GraphicPlane& graphicPlane(int dpy) const; 283 GraphicPlane& graphicPlane(int dpy); 284 void signalEvent(); 285 void repaintEverything(); 286 287 private: 288 void waitForEvent(); 289 void handleConsoleEvents(); 290 void handleTransaction(uint32_t transactionFlags); 291 void handleTransactionLocked(uint32_t transactionFlags); 292 293 void computeVisibleRegions( 294 const LayerVector& currentLayers, 295 Region& dirtyRegion, 296 Region& wormholeRegion); 297 298 void handlePageFlip(); 299 bool lockPageFlip(const LayerVector& currentLayers); 300 void unlockPageFlip(const LayerVector& currentLayers); 301 void handleWorkList(); 302 void handleRepaint(); 303 void postFramebuffer(); 304 void setupHardwareComposer(Region& dirtyInOut); 305 void composeSurfaces(const Region& dirty); 306 307 308 void setInvalidateRegion(const Region& reg); 309 Region getAndClearInvalidateRegion(); 310 311 ssize_t addClientLayer(const sp<Client>& client, 312 const sp<LayerBaseClient>& lbc); 313 status_t addLayer_l(const sp<LayerBase>& layer); 314 status_t removeLayer_l(const sp<LayerBase>& layer); 315 status_t purgatorizeLayer_l(const sp<LayerBase>& layer); 316 317 uint32_t getTransactionFlags(uint32_t flags); 318 uint32_t peekTransactionFlags(uint32_t flags); 319 uint32_t setTransactionFlags(uint32_t flags); 320 void commitTransaction(); 321 322 323 status_t captureScreenImplLocked(DisplayID dpy, 324 sp<IMemoryHeap>* heap, 325 uint32_t* width, uint32_t* height, PixelFormat* format, 326 uint32_t reqWidth, uint32_t reqHeight, 327 uint32_t minLayerZ, uint32_t maxLayerZ); 328 329 status_t turnElectronBeamOffImplLocked(int32_t mode); 330 status_t turnElectronBeamOnImplLocked(int32_t mode); 331 status_t electronBeamOffAnimationImplLocked(); 332 status_t electronBeamOnAnimationImplLocked(); 333 334 void debugFlashRegions(); 335 void debugShowFPS() const; 336 void drawWormhole() const; 337 338 339 mutable MessageQueue mEventQueue; 340 341 // access must be protected by mStateLock 342 mutable Mutex mStateLock; 343 State mCurrentState; 344 volatile int32_t mTransactionFlags; 345 Condition mTransactionCV; 346 SortedVector< sp<LayerBase> > mLayerPurgatory; 347 bool mTransationPending; 348 Vector< sp<LayerBase> > mLayersPendingRemoval; 349 350 // protected by mStateLock (but we could use another lock) 351 GraphicPlane mGraphicPlanes[1]; 352 bool mLayersRemoved; 353 DefaultKeyedVector< wp<IBinder>, wp<Layer> > mLayerMap; 354 355 // access must be protected by mInvalidateLock 356 mutable Mutex mInvalidateLock; 357 Region mInvalidateRegion; 358 359 // constant members (no synchronization needed for access) 360 sp<IMemoryHeap> mServerHeap; 361 surface_flinger_cblk_t* mServerCblk; 362 GLuint mWormholeTexName; 363 GLuint mProtectedTexName; 364 nsecs_t mBootTime; 365 366 // Can only accessed from the main thread, these members 367 // don't need synchronization 368 State mDrawingState; 369 Region mDirtyRegion; 370 Region mDirtyRegionRemovedLayer; 371 Region mSwapRegion; 372 Region mWormholeRegion; 373 bool mVisibleRegionsDirty; 374 bool mHwWorkListDirty; 375 int32_t mElectronBeamAnimationMode; 376 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 377 378 379 // don't use a lock for these, we don't care 380 int mDebugRegion; 381 int mDebugBackground; 382 int mDebugDDMS; 383 int mDebugDisableHWC; 384 int mDebugDisableTransformHint; 385 volatile nsecs_t mDebugInSwapBuffers; 386 nsecs_t mLastSwapBufferTime; 387 volatile nsecs_t mDebugInTransaction; 388 nsecs_t mLastTransactionTime; 389 bool mBootFinished; 390 391 // these are thread safe 392 mutable Barrier mReadyToRunBarrier; 393 394 395 // protected by mDestroyedLayerLock; 396 mutable Mutex mDestroyedLayerLock; 397 Vector<LayerBase const *> mDestroyedLayers; 398 399 // atomic variables 400 enum { 401 eConsoleReleased = 1, 402 eConsoleAcquired = 2 403 }; 404 volatile int32_t mConsoleSignals; 405 406 // only written in the main thread, only read in other threads 407 volatile int32_t mSecureFrameBuffer; 408 }; 409 410 // --------------------------------------------------------------------------- 411 }; // namespace android 412 413 #endif // ANDROID_SURFACE_FLINGER_H 414
