SurfaceFlinger.h revision cb9732a951d20cacb7ebe2dab132b5738226b1b6
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 <cutils/compiler.h> 24 25#include <utils/Atomic.h> 26#include <utils/Errors.h> 27#include <utils/KeyedVector.h> 28#include <utils/RefBase.h> 29#include <utils/SortedVector.h> 30#include <utils/threads.h> 31 32#include <binder/BinderService.h> 33#include <binder/IMemory.h> 34 35#include <ui/PixelFormat.h> 36#include <gui/IGraphicBufferAlloc.h> 37#include <gui/ISurfaceComposer.h> 38#include <gui/ISurfaceComposerClient.h> 39 40#include "Barrier.h" 41#include "Layer.h" 42 43#include "MessageQueue.h" 44 45namespace android { 46 47// --------------------------------------------------------------------------- 48 49class Client; 50class DisplayHardware; 51class DisplayEventConnection; 52class EventThread; 53class Layer; 54class LayerDim; 55class LayerScreenshot; 56struct surface_flinger_cblk_t; 57 58// --------------------------------------------------------------------------- 59 60class Client : public BnSurfaceComposerClient 61{ 62public: 63 Client(const sp<SurfaceFlinger>& flinger); 64 ~Client(); 65 66 status_t initCheck() const; 67 68 // protected by SurfaceFlinger::mStateLock 69 size_t attachLayer(const sp<LayerBaseClient>& layer); 70 void detachLayer(const LayerBaseClient* layer); 71 sp<LayerBaseClient> getLayerUser(int32_t i) const; 72 73private: 74 // ISurfaceComposerClient interface 75 virtual sp<ISurface> createSurface( 76 surface_data_t* params, const String8& name, 77 DisplayID display, uint32_t w, uint32_t h,PixelFormat format, 78 uint32_t flags); 79 virtual status_t destroySurface(SurfaceID surfaceId); 80 virtual status_t onTransact( 81 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 82 83 // constant 84 sp<SurfaceFlinger> mFlinger; 85 86 // protected by mLock 87 DefaultKeyedVector< size_t, wp<LayerBaseClient> > mLayers; 88 size_t mNameGenerator; 89 90 // thread-safe 91 mutable Mutex mLock; 92}; 93 94class GraphicBufferAlloc : public BnGraphicBufferAlloc 95{ 96public: 97 GraphicBufferAlloc(); 98 virtual ~GraphicBufferAlloc(); 99 virtual sp<GraphicBuffer> createGraphicBuffer(uint32_t w, uint32_t h, 100 PixelFormat format, uint32_t usage, status_t* error); 101}; 102 103// --------------------------------------------------------------------------- 104 105class GraphicPlane 106{ 107public: 108 static status_t orientationToTransfrom(int orientation, int w, int h, 109 Transform* tr); 110 111 GraphicPlane(); 112 ~GraphicPlane(); 113 114 bool initialized() const; 115 116 void setDisplayHardware(DisplayHardware *); 117 status_t setOrientation(int orientation); 118 int getOrientation() const { return mOrientation; } 119 int getWidth() const; 120 int getHeight() const; 121 122 const DisplayHardware& displayHardware() const; 123 DisplayHardware& editDisplayHardware(); 124 const Transform& transform() const; 125 EGLDisplay getEGLDisplay() const; 126 127private: 128 GraphicPlane(const GraphicPlane&); 129 GraphicPlane operator = (const GraphicPlane&); 130 131 DisplayHardware* mHw; 132 Transform mGlobalTransform; 133 Transform mDisplayTransform; 134 int mOrientation; 135 float mDisplayWidth; 136 float mDisplayHeight; 137 int mWidth; 138 int mHeight; 139}; 140 141// --------------------------------------------------------------------------- 142 143enum { 144 eTransactionNeeded = 0x01, 145 eTraversalNeeded = 0x02 146}; 147 148class SurfaceFlinger : 149 public BinderService<SurfaceFlinger>, 150 public BnSurfaceComposer, 151 public IBinder::DeathRecipient, 152 protected Thread 153{ 154public: 155 static char const* getServiceName() { return "SurfaceFlinger"; } 156 157 SurfaceFlinger(); 158 virtual ~SurfaceFlinger(); 159 void init(); 160 161 virtual status_t onTransact( 162 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 163 164 virtual status_t dump(int fd, const Vector<String16>& args); 165 166 // ISurfaceComposer interface 167 virtual sp<ISurfaceComposerClient> createConnection(); 168 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc(); 169 virtual sp<IMemoryHeap> getCblk() const; 170 virtual void bootFinished(); 171 virtual void setTransactionState(const Vector<ComposerState>& state, 172 int orientation, uint32_t flags); 173 virtual bool authenticateSurfaceTexture(const sp<ISurfaceTexture>& surface) const; 174 virtual sp<IDisplayEventConnection> createDisplayEventConnection(); 175 176 virtual status_t captureScreen(DisplayID dpy, 177 sp<IMemoryHeap>* heap, 178 uint32_t* width, uint32_t* height, 179 PixelFormat* format, uint32_t reqWidth, uint32_t reqHeight, 180 uint32_t minLayerZ, uint32_t maxLayerZ); 181 182 virtual status_t turnElectronBeamOff(int32_t mode); 183 virtual status_t turnElectronBeamOn(int32_t mode); 184 185 void screenReleased(DisplayID dpy); 186 void screenAcquired(DisplayID dpy); 187 188 status_t renderScreenToTexture(DisplayID dpy, 189 GLuint* textureName, GLfloat* uOut, GLfloat* vOut); 190 status_t renderScreenToTextureLocked(DisplayID dpy, 191 GLuint* textureName, GLfloat* uOut, GLfloat* vOut); 192 193 void onMessageReceived(int32_t what); 194 195 status_t postMessageAsync(const sp<MessageBase>& msg, 196 nsecs_t reltime=0, uint32_t flags = 0); 197 198 status_t postMessageSync(const sp<MessageBase>& msg, 199 nsecs_t reltime=0, uint32_t flags = 0); 200 201 status_t removeLayer(const sp<LayerBase>& layer); 202 status_t addLayer(const sp<LayerBase>& layer); 203 status_t invalidateLayerVisibility(const sp<LayerBase>& layer); 204 void invalidateHwcGeometry(); 205 206 sp<Layer> getLayer(const sp<ISurface>& sur) const; 207 208 GLuint getProtectedTexName() const { return mProtectedTexName; } 209 210 211 class MessageDestroyGLTexture : public MessageBase { 212 GLuint texture; 213 public: 214 MessageDestroyGLTexture(GLuint texture) : texture(texture) { } 215 virtual bool handler() { 216 glDeleteTextures(1, &texture); 217 return true; 218 } 219 }; 220 221 222private: 223 // DeathRecipient interface 224 virtual void binderDied(const wp<IBinder>& who); 225 226private: 227 friend class Client; 228 friend class DisplayEventConnection; 229 friend class LayerBase; 230 friend class LayerBaseClient; 231 friend class Layer; 232 233 sp<ISurface> createSurface( 234 ISurfaceComposerClient::surface_data_t* params, 235 const String8& name, 236 const sp<Client>& client, 237 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 238 uint32_t flags); 239 240 sp<Layer> createNormalSurface( 241 const sp<Client>& client, DisplayID display, 242 uint32_t w, uint32_t h, uint32_t flags, 243 PixelFormat& format); 244 245 sp<LayerDim> createDimSurface( 246 const sp<Client>& client, DisplayID display, 247 uint32_t w, uint32_t h, uint32_t flags); 248 249 sp<LayerScreenshot> createScreenshotSurface( 250 const sp<Client>& client, DisplayID display, 251 uint32_t w, uint32_t h, uint32_t flags); 252 253 status_t removeSurface(const sp<Client>& client, SurfaceID sid); 254 status_t destroySurface(const wp<LayerBaseClient>& layer); 255 uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s); 256 257 class LayerVector : public SortedVector< sp<LayerBase> > { 258 public: 259 LayerVector() { } 260 LayerVector(const LayerVector& rhs) : SortedVector< sp<LayerBase> >(rhs) { } 261 virtual int do_compare(const void* lhs, const void* rhs) const { 262 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 263 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 264 // sort layers by Z order 265 uint32_t lz = l->currentState().z; 266 uint32_t rz = r->currentState().z; 267 // then by sequence, so we get a stable ordering 268 return (lz != rz) ? (lz - rz) : (l->sequence - r->sequence); 269 } 270 }; 271 272 struct State { 273 State() 274 : orientation(ISurfaceComposer::eOrientationDefault), 275 orientationFlags(0) { 276 } 277 LayerVector layersSortedByZ; 278 uint8_t orientation; 279 uint8_t orientationFlags; 280 }; 281 282 virtual bool threadLoop(); 283 virtual status_t readyToRun(); 284 virtual void onFirstRef(); 285 286public: // hack to work around gcc 4.0.3 bug 287 const GraphicPlane& graphicPlane(int dpy) const; 288 GraphicPlane& graphicPlane(int dpy); 289 290 void signalTransaction(); 291 void signalLayerUpdate(); 292 void signalRefresh(); 293 void repaintEverything(); 294 295private: 296 void waitForEvent(); 297 void handleConsoleEvents(); 298 void handleTransaction(uint32_t transactionFlags); 299 void handleTransactionLocked(uint32_t transactionFlags); 300 301 void computeVisibleRegions( 302 const LayerVector& currentLayers, 303 Region& dirtyRegion, 304 Region& wormholeRegion); 305 306 void handlePageFlip(); 307 bool lockPageFlip(const LayerVector& currentLayers); 308 void unlockPageFlip(const LayerVector& currentLayers); 309 void handleRefresh(); 310 void handleWorkList(); 311 void handleRepaint(); 312 void postFramebuffer(); 313 void setupHardwareComposer(Region& dirtyInOut); 314 void composeSurfaces(const Region& dirty); 315 316 317 void setInvalidateRegion(const Region& reg); 318 Region getAndClearInvalidateRegion(); 319 320 ssize_t addClientLayer(const sp<Client>& client, 321 const sp<LayerBaseClient>& lbc); 322 status_t addLayer_l(const sp<LayerBase>& layer); 323 status_t removeLayer_l(const sp<LayerBase>& layer); 324 status_t purgatorizeLayer_l(const sp<LayerBase>& layer); 325 326 uint32_t getTransactionFlags(uint32_t flags); 327 uint32_t peekTransactionFlags(uint32_t flags); 328 uint32_t setTransactionFlags(uint32_t flags); 329 void commitTransaction(); 330 331 332 status_t captureScreenImplLocked(DisplayID dpy, 333 sp<IMemoryHeap>* heap, 334 uint32_t* width, uint32_t* height, PixelFormat* format, 335 uint32_t reqWidth, uint32_t reqHeight, 336 uint32_t minLayerZ, uint32_t maxLayerZ); 337 338 status_t turnElectronBeamOffImplLocked(int32_t mode); 339 status_t turnElectronBeamOnImplLocked(int32_t mode); 340 status_t electronBeamOffAnimationImplLocked(); 341 status_t electronBeamOnAnimationImplLocked(); 342 343 void debugFlashRegions(); 344 void drawWormhole() const; 345 346 void listLayersLocked(const Vector<String16>& args, size_t& index, 347 String8& result, char* buffer, size_t SIZE) const; 348 void dumpStatsLocked(const Vector<String16>& args, size_t& index, 349 String8& result, char* buffer, size_t SIZE) const; 350 void clearStatsLocked(const Vector<String16>& args, size_t& index, 351 String8& result, char* buffer, size_t SIZE) const; 352 void dumpAllLocked(String8& result, char* buffer, size_t SIZE) const; 353 354 mutable MessageQueue mEventQueue; 355 356 // access must be protected by mStateLock 357 mutable Mutex mStateLock; 358 State mCurrentState; 359 volatile int32_t mTransactionFlags; 360 Condition mTransactionCV; 361 SortedVector< sp<LayerBase> > mLayerPurgatory; 362 bool mTransationPending; 363 Vector< sp<LayerBase> > mLayersPendingRemoval; 364 365 // protected by mStateLock (but we could use another lock) 366 GraphicPlane mGraphicPlanes[1]; 367 bool mLayersRemoved; 368 DefaultKeyedVector< wp<IBinder>, wp<Layer> > mLayerMap; 369 370 // access must be protected by mInvalidateLock 371 mutable Mutex mInvalidateLock; 372 Region mInvalidateRegion; 373 374 // constant members (no synchronization needed for access) 375 sp<IMemoryHeap> mServerHeap; 376 surface_flinger_cblk_t* mServerCblk; 377 GLuint mWormholeTexName; 378 GLuint mProtectedTexName; 379 nsecs_t mBootTime; 380 sp<EventThread> mEventThread; 381 382 // Can only accessed from the main thread, these members 383 // don't need synchronization 384 State mDrawingState; 385 Region mDirtyRegion; 386 Region mDirtyRegionRemovedLayer; 387 Region mSwapRegion; 388 Region mWormholeRegion; 389 bool mVisibleRegionsDirty; 390 bool mHwWorkListDirty; 391 int32_t mElectronBeamAnimationMode; 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 mDebugDDMS; 399 int mDebugDisableHWC; 400 int mDebugDisableTransformHint; 401 volatile nsecs_t mDebugInSwapBuffers; 402 nsecs_t mLastSwapBufferTime; 403 volatile nsecs_t mDebugInTransaction; 404 nsecs_t mLastTransactionTime; 405 bool mBootFinished; 406 407 // these are thread safe 408 mutable Barrier mReadyToRunBarrier; 409 410 411 // protected by mDestroyedLayerLock; 412 mutable Mutex mDestroyedLayerLock; 413 Vector<LayerBase const *> mDestroyedLayers; 414 415 // atomic variables 416 enum { 417 eConsoleReleased = 1, 418 eConsoleAcquired = 2 419 }; 420 volatile int32_t mConsoleSignals; 421 422 // only written in the main thread, only read in other threads 423 volatile int32_t mSecureFrameBuffer; 424}; 425 426// --------------------------------------------------------------------------- 427}; // namespace android 428 429#endif // ANDROID_SURFACE_FLINGER_H 430