SurfaceFlinger.h revision 495633406580685dfaa41979bbae47fc5f77fefe
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/SortedVector.h> 24#include <utils/KeyedVector.h> 25#include <utils/threads.h> 26#include <utils/Atomic.h> 27#include <utils/Errors.h> 28#include <utils/RefBase.h> 29 30#include <binder/IMemory.h> 31#include <binder/Permission.h> 32#include <binder/BinderService.h> 33 34#include <ui/PixelFormat.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 43namespace android { 44 45// --------------------------------------------------------------------------- 46 47class Client; 48class DisplayHardware; 49class FreezeLock; 50class Layer; 51class LayerDim; 52 53#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) 54#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) 55 56// --------------------------------------------------------------------------- 57 58class Client : public BnSurfaceComposerClient 59{ 60public: 61 Client(const sp<SurfaceFlinger>& flinger); 62 ~Client(); 63 64 status_t initCheck() const; 65 66 // protected by SurfaceFlinger::mStateLock 67 ssize_t attachLayer(const sp<LayerBaseClient>& layer); 68 void detachLayer(const LayerBaseClient* layer); 69 sp<LayerBaseClient> getLayerUser(int32_t i) const; 70 71private: 72 73 // ISurfaceComposerClient interface 74 virtual sp<IMemoryHeap> getControlBlock() const; 75 virtual ssize_t getTokenForSurface(const sp<ISurface>& sur) const; 76 virtual sp<ISurface> createSurface( 77 surface_data_t* params, int pid, const String8& name, 78 DisplayID display, uint32_t w, uint32_t h,PixelFormat format, 79 uint32_t flags); 80 virtual status_t destroySurface(SurfaceID surfaceId); 81 virtual status_t setState(int32_t count, const layer_state_t* states); 82 83 DefaultKeyedVector< size_t, wp<LayerBaseClient> > mLayers; 84 sp<SurfaceFlinger> mFlinger; 85 int32_t mNameGenerator; 86}; 87 88class UserClient : public BnSurfaceComposerClient 89{ 90public: 91 // pointer to this client's control block 92 SharedClient* ctrlblk; 93 94public: 95 UserClient(const sp<SurfaceFlinger>& flinger); 96 ~UserClient(); 97 98 status_t initCheck() const; 99 100 // protected by SurfaceFlinger::mStateLock 101 void detachLayer(const Layer* layer); 102 103private: 104 105 // ISurfaceComposerClient interface 106 virtual sp<IMemoryHeap> getControlBlock() const; 107 virtual ssize_t getTokenForSurface(const sp<ISurface>& sur) const; 108 virtual sp<ISurface> createSurface( 109 surface_data_t* params, int pid, const String8& name, 110 DisplayID display, uint32_t w, uint32_t h,PixelFormat format, 111 uint32_t flags); 112 virtual status_t destroySurface(SurfaceID surfaceId); 113 virtual status_t setState(int32_t count, const layer_state_t* states); 114 115 // atomic-ops 116 mutable volatile int32_t mBitmap; 117 118 sp<IMemoryHeap> mCblkHeap; 119 sp<SurfaceFlinger> mFlinger; 120}; 121 122// --------------------------------------------------------------------------- 123 124class GraphicPlane 125{ 126public: 127 static status_t orientationToTransfrom(int orientation, int w, int h, 128 Transform* tr); 129 130 GraphicPlane(); 131 ~GraphicPlane(); 132 133 bool initialized() const; 134 135 void setDisplayHardware(DisplayHardware *); 136 status_t setOrientation(int orientation); 137 int getOrientation() const { return mOrientation; } 138 int getWidth() const; 139 int getHeight() const; 140 141 const DisplayHardware& displayHardware() const; 142 DisplayHardware& editDisplayHardware(); 143 const Transform& transform() const; 144 EGLDisplay getEGLDisplay() const; 145 146private: 147 GraphicPlane(const GraphicPlane&); 148 GraphicPlane operator = (const GraphicPlane&); 149 150 DisplayHardware* mHw; 151 Transform mGlobalTransform; 152 Transform mDisplayTransform; 153 int mOrientation; 154 float mDisplayWidth; 155 float mDisplayHeight; 156 int mWidth; 157 int mHeight; 158}; 159 160// --------------------------------------------------------------------------- 161 162enum { 163 eTransactionNeeded = 0x01, 164 eTraversalNeeded = 0x02 165}; 166 167class SurfaceFlinger : 168 public BinderService<SurfaceFlinger>, 169 public BnSurfaceComposer, 170 protected Thread 171{ 172public: 173 static char const* getServiceName() { return "SurfaceFlinger"; } 174 175 SurfaceFlinger(); 176 virtual ~SurfaceFlinger(); 177 void init(); 178 179 virtual status_t onTransact( 180 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 181 182 virtual status_t dump(int fd, const Vector<String16>& args); 183 184 // ISurfaceComposer interface 185 virtual sp<ISurfaceComposerClient> createConnection(); 186 virtual sp<ISurfaceComposerClient> createClientConnection(); 187 virtual sp<IMemoryHeap> getCblk() const; 188 virtual void bootFinished(); 189 virtual void openGlobalTransaction(); 190 virtual void closeGlobalTransaction(); 191 virtual status_t freezeDisplay(DisplayID dpy, uint32_t flags); 192 virtual status_t unfreezeDisplay(DisplayID dpy, uint32_t flags); 193 virtual int setOrientation(DisplayID dpy, int orientation, uint32_t flags); 194 virtual void signal() const; 195 196 virtual status_t captureScreen(DisplayID dpy, 197 sp<IMemoryHeap>* heap, 198 uint32_t* width, uint32_t* height, 199 PixelFormat* format, uint32_t reqWidth, uint32_t reqHeight, 200 uint32_t minLayerZ, uint32_t maxLayerZ); 201 202 virtual status_t turnElectronBeamOff(int32_t mode); 203 virtual status_t turnElectronBeamOn(int32_t mode); 204 205 void screenReleased(DisplayID dpy); 206 void screenAcquired(DisplayID dpy); 207 208 status_t removeLayer(const sp<LayerBase>& layer); 209 status_t addLayer(const sp<LayerBase>& layer); 210 status_t invalidateLayerVisibility(const sp<LayerBase>& layer); 211 212 sp<Layer> getLayer(const sp<ISurface>& sur) const; 213 214private: 215 friend class Client; 216 friend class LayerBase; 217 friend class LayerBaseClient; 218 friend class LayerBaseClient::Surface; 219 friend class Layer; 220 friend class LayerDim; 221 222 sp<ISurface> createSurface(const sp<Client>& client, 223 int pid, const String8& name, 224 ISurfaceComposerClient::surface_data_t* params, 225 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 226 uint32_t flags); 227 228 sp<Layer> createNormalSurface( 229 const sp<Client>& client, DisplayID display, 230 uint32_t w, uint32_t h, uint32_t flags, 231 PixelFormat& format); 232 233 sp<LayerDim> createDimSurface( 234 const sp<Client>& client, DisplayID display, 235 uint32_t w, uint32_t h, uint32_t flags); 236 237 status_t removeSurface(const sp<Client>& client, SurfaceID sid); 238 status_t destroySurface(const sp<LayerBaseClient>& layer); 239 status_t setClientState(const sp<Client>& client, 240 int32_t count, const layer_state_t* states); 241 242 class LayerVector : public SortedVector< sp<LayerBase> > { 243 public: 244 LayerVector() { } 245 LayerVector(const LayerVector& rhs) : SortedVector< sp<LayerBase> >(rhs) { } 246 virtual int do_compare(const void* lhs, const void* rhs) const { 247 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 248 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 249 // sort layers by Z order 250 uint32_t lz = l->currentState().z; 251 uint32_t rz = r->currentState().z; 252 // then by sequence, so we get a stable ordering 253 return (lz != rz) ? (lz - rz) : (l->sequence - r->sequence); 254 } 255 }; 256 257 struct State { 258 State() { 259 orientation = ISurfaceComposer::eOrientationDefault; 260 freezeDisplay = 0; 261 } 262 LayerVector layersSortedByZ; 263 uint8_t orientation; 264 uint8_t orientationType; 265 uint8_t freezeDisplay; 266 }; 267 268 virtual bool threadLoop(); 269 virtual status_t readyToRun(); 270 virtual void onFirstRef(); 271 272public: // hack to work around gcc 4.0.3 bug 273 const GraphicPlane& graphicPlane(int dpy) const; 274 GraphicPlane& graphicPlane(int dpy); 275private: 276 277 void waitForEvent(); 278public: // hack to work around gcc 4.0.3 bug 279 void signalEvent(); 280private: 281 void handleConsoleEvents(); 282 void handleTransaction(uint32_t transactionFlags); 283 void handleTransactionLocked( 284 uint32_t transactionFlags, 285 Vector< sp<LayerBase> >& ditchedLayers); 286 287 void computeVisibleRegions( 288 LayerVector& currentLayers, 289 Region& dirtyRegion, 290 Region& wormholeRegion); 291 292 void handlePageFlip(); 293 bool lockPageFlip(const LayerVector& currentLayers); 294 void unlockPageFlip(const LayerVector& currentLayers); 295 void handleWorkList(); 296 void handleRepaint(); 297 void postFramebuffer(); 298 void composeSurfaces(const Region& dirty); 299 void unlockClients(); 300 301 302 ssize_t addClientLayer(const sp<Client>& client, 303 const sp<LayerBaseClient>& lbc); 304 status_t addLayer_l(const sp<LayerBase>& layer); 305 status_t removeLayer_l(const sp<LayerBase>& layer); 306 status_t purgatorizeLayer_l(const sp<LayerBase>& layer); 307 308 uint32_t getTransactionFlags(uint32_t flags); 309 uint32_t setTransactionFlags(uint32_t flags); 310 void commitTransaction(); 311 312 313 status_t captureScreenImplLocked(DisplayID dpy, 314 sp<IMemoryHeap>* heap, 315 uint32_t* width, uint32_t* height, PixelFormat* format, 316 uint32_t reqWidth, uint32_t reqHeight, 317 uint32_t minLayerZ, uint32_t maxLayerZ); 318 319 status_t turnElectronBeamOffImplLocked(int32_t mode); 320 status_t turnElectronBeamOnImplLocked(int32_t mode); 321 status_t electronBeamOffAnimationImplLocked(); 322 status_t electronBeamOnAnimationImplLocked(); 323 status_t renderScreenToTextureLocked(DisplayID dpy, 324 GLuint* textureName, GLfloat* uOut, GLfloat* vOut); 325 sp<GraphicBuffer> createGraphicBuffer(uint32_t w, uint32_t h, 326 PixelFormat format, uint32_t usage) const; 327 328 friend class FreezeLock; 329 sp<FreezeLock> getFreezeLock() const; 330 inline void incFreezeCount() { 331 if (mFreezeCount == 0) 332 mFreezeDisplayTime = 0; 333 mFreezeCount++; 334 } 335 inline void decFreezeCount() { if (mFreezeCount > 0) mFreezeCount--; } 336 inline bool hasFreezeRequest() const { return mFreezeDisplay; } 337 inline bool isFrozen() const { 338 return (mFreezeDisplay || mFreezeCount>0) && mBootFinished; 339 } 340 341 342 void debugFlashRegions(); 343 void debugShowFPS() const; 344 void drawWormhole() const; 345 346 347 mutable MessageQueue mEventQueue; 348 349 status_t postMessageAsync(const sp<MessageBase>& msg, 350 nsecs_t reltime=0, uint32_t flags = 0); 351 352 status_t postMessageSync(const sp<MessageBase>& msg, 353 nsecs_t reltime=0, uint32_t flags = 0); 354 355 // access must be protected by mStateLock 356 mutable Mutex mStateLock; 357 State mCurrentState; 358 State mDrawingState; 359 volatile int32_t mTransactionFlags; 360 volatile int32_t mTransactionCount; 361 Condition mTransactionCV; 362 bool mResizeTransationPending; 363 364 // protected by mStateLock (but we could use another lock) 365 GraphicPlane mGraphicPlanes[1]; 366 bool mLayersRemoved; 367 DefaultKeyedVector< wp<IBinder>, wp<Layer> > mLayerMap; 368 369 // constant members (no synchronization needed for access) 370 sp<IMemoryHeap> mServerHeap; 371 surface_flinger_cblk_t* mServerCblk; 372 GLuint mWormholeTexName; 373 nsecs_t mBootTime; 374 Permission mHardwareTest; 375 Permission mAccessSurfaceFlinger; 376 Permission mReadFramebuffer; 377 Permission mDump; 378 379 // Can only accessed from the main thread, these members 380 // don't need synchronization 381 Region mDirtyRegion; 382 Region mDirtyRegionRemovedLayer; 383 Region mInvalidRegion; 384 Region mWormholeRegion; 385 bool mVisibleRegionsDirty; 386 bool mHwWorkListDirty; 387 bool mDeferReleaseConsole; 388 bool mFreezeDisplay; 389 int32_t mElectronBeamAnimationMode; 390 int32_t mFreezeCount; 391 nsecs_t mFreezeDisplayTime; 392 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 393 394 395 // don't use a lock for these, we don't care 396 int mDebugRegion; 397 int mDebugBackground; 398 int mDebugDisableHWC; 399 volatile nsecs_t mDebugInSwapBuffers; 400 nsecs_t mLastSwapBufferTime; 401 volatile nsecs_t mDebugInTransaction; 402 nsecs_t mLastTransactionTime; 403 bool mBootFinished; 404 405 // these are thread safe 406 mutable Barrier mReadyToRunBarrier; 407 408 // atomic variables 409 enum { 410 eConsoleReleased = 1, 411 eConsoleAcquired = 2 412 }; 413 volatile int32_t mConsoleSignals; 414 415 // only written in the main thread, only read in other threads 416 volatile int32_t mSecureFrameBuffer; 417}; 418 419// --------------------------------------------------------------------------- 420 421class FreezeLock : public LightRefBase<FreezeLock> { 422 SurfaceFlinger* mFlinger; 423public: 424 FreezeLock(SurfaceFlinger* flinger) 425 : mFlinger(flinger) { 426 mFlinger->incFreezeCount(); 427 } 428 ~FreezeLock() { 429 mFlinger->decFreezeCount(); 430 } 431}; 432 433// --------------------------------------------------------------------------- 434}; // namespace android 435 436#endif // ANDROID_SURFACE_FLINGER_H 437