SurfaceFlinger.h revision f6679fc6f70939643901f29a9a69e40c603e6e5f
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 LayerBlur; 52class LayerDim; 53class LayerBuffer; 54 55#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true )) 56#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false )) 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 ssize_t attachLayer(const sp<LayerBaseClient>& layer); 70 void detachLayer(const LayerBaseClient* layer); 71 sp<LayerBaseClient> getLayerUser(int32_t i) const; 72 73private: 74 75 // ISurfaceComposerClient interface 76 virtual sp<IMemoryHeap> getControlBlock() const; 77 virtual ssize_t getTokenForSurface(const sp<ISurface>& sur) const; 78 virtual sp<ISurface> createSurface( 79 surface_data_t* params, int pid, const String8& name, 80 DisplayID display, uint32_t w, uint32_t h,PixelFormat format, 81 uint32_t flags); 82 virtual status_t destroySurface(SurfaceID surfaceId); 83 virtual status_t setState(int32_t count, const layer_state_t* states); 84 85 DefaultKeyedVector< size_t, wp<LayerBaseClient> > mLayers; 86 sp<SurfaceFlinger> mFlinger; 87 int32_t mNameGenerator; 88}; 89 90class UserClient : public BnSurfaceComposerClient 91{ 92public: 93 // pointer to this client's control block 94 SharedClient* ctrlblk; 95 96public: 97 UserClient(const sp<SurfaceFlinger>& flinger); 98 ~UserClient(); 99 100 status_t initCheck() const; 101 102 // protected by SurfaceFlinger::mStateLock 103 void detachLayer(const Layer* layer); 104 105private: 106 107 // ISurfaceComposerClient interface 108 virtual sp<IMemoryHeap> getControlBlock() const; 109 virtual ssize_t getTokenForSurface(const sp<ISurface>& sur) const; 110 virtual sp<ISurface> createSurface( 111 surface_data_t* params, int pid, const String8& name, 112 DisplayID display, uint32_t w, uint32_t h,PixelFormat format, 113 uint32_t flags); 114 virtual status_t destroySurface(SurfaceID surfaceId); 115 virtual status_t setState(int32_t count, const layer_state_t* states); 116 117 // atomic-ops 118 mutable volatile int32_t mBitmap; 119 120 sp<IMemoryHeap> mCblkHeap; 121 sp<SurfaceFlinger> mFlinger; 122}; 123 124// --------------------------------------------------------------------------- 125 126class GraphicPlane 127{ 128public: 129 static status_t orientationToTransfrom(int orientation, int w, int h, 130 Transform* tr); 131 132 GraphicPlane(); 133 ~GraphicPlane(); 134 135 bool initialized() const; 136 137 void setDisplayHardware(DisplayHardware *); 138 status_t setOrientation(int orientation); 139 int getOrientation() const { return mOrientation; } 140 int getWidth() const; 141 int getHeight() const; 142 143 const DisplayHardware& displayHardware() const; 144 const Transform& transform() const; 145 EGLDisplay getEGLDisplay() const; 146 147private: 148 GraphicPlane(const GraphicPlane&); 149 GraphicPlane operator = (const GraphicPlane&); 150 151 DisplayHardware* mHw; 152 Transform mGlobalTransform; 153 Transform mDisplayTransform; 154 int mOrientation; 155 float mDisplayWidth; 156 float mDisplayHeight; 157 int mWidth; 158 int mHeight; 159}; 160 161// --------------------------------------------------------------------------- 162 163enum { 164 eTransactionNeeded = 0x01, 165 eTraversalNeeded = 0x02 166}; 167 168class SurfaceFlinger : 169 public BinderService<SurfaceFlinger>, 170 public BnSurfaceComposer, 171 protected Thread 172{ 173public: 174 static char const* getServiceName() { return "SurfaceFlinger"; } 175 176 SurfaceFlinger(); 177 virtual ~SurfaceFlinger(); 178 void init(); 179 180 virtual status_t onTransact( 181 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags); 182 183 virtual status_t dump(int fd, const Vector<String16>& args); 184 185 // ISurfaceComposer interface 186 virtual sp<ISurfaceComposerClient> createConnection(); 187 virtual sp<ISurfaceComposerClient> createClientConnection(); 188 virtual sp<IMemoryHeap> getCblk() const; 189 virtual void bootFinished(); 190 virtual void openGlobalTransaction(); 191 virtual void closeGlobalTransaction(); 192 virtual status_t freezeDisplay(DisplayID dpy, uint32_t flags); 193 virtual status_t unfreezeDisplay(DisplayID dpy, uint32_t flags); 194 virtual int setOrientation(DisplayID dpy, int orientation, uint32_t flags); 195 virtual void signal() const; 196 197 void screenReleased(DisplayID dpy); 198 void screenAcquired(DisplayID dpy); 199 200 overlay_control_device_t* getOverlayEngine() const; 201 202 status_t removeLayer(const sp<LayerBase>& layer); 203 status_t addLayer(const sp<LayerBase>& layer); 204 status_t invalidateLayerVisibility(const sp<LayerBase>& layer); 205 206 sp<Layer> getLayer(const sp<ISurface>& sur) const; 207 208private: 209 friend class Client; 210 friend class LayerBase; 211 friend class LayerBuffer; 212 friend class LayerBaseClient; 213 friend class LayerBaseClient::Surface; 214 friend class Layer; 215 friend class LayerBlur; 216 friend class LayerDim; 217 218 sp<ISurface> createSurface(const sp<Client>& client, 219 int pid, const String8& name, 220 ISurfaceComposerClient::surface_data_t* params, 221 DisplayID display, uint32_t w, uint32_t h, PixelFormat format, 222 uint32_t flags); 223 224 sp<Layer> createNormalSurface( 225 const sp<Client>& client, DisplayID display, 226 uint32_t w, uint32_t h, uint32_t flags, 227 PixelFormat& format); 228 229 sp<LayerBlur> createBlurSurface( 230 const sp<Client>& client, DisplayID display, 231 uint32_t w, uint32_t h, uint32_t flags); 232 233 sp<LayerDim> createDimSurface( 234 const sp<Client>& client, DisplayID display, 235 uint32_t w, uint32_t h, uint32_t flags); 236 237 sp<LayerBuffer> createPushBuffersSurface( 238 const sp<Client>& client, DisplayID display, 239 uint32_t w, uint32_t h, uint32_t flags); 240 241 status_t removeSurface(const sp<Client>& client, SurfaceID sid); 242 status_t destroySurface(const sp<LayerBaseClient>& layer); 243 status_t setClientState(const sp<Client>& client, 244 int32_t count, const layer_state_t* states); 245 246 class LayerVector : public SortedVector< sp<LayerBase> > { 247 public: 248 LayerVector() { } 249 LayerVector(const LayerVector& rhs) : SortedVector< sp<LayerBase> >(rhs) { } 250 virtual int do_compare(const void* lhs, const void* rhs) const { 251 const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs)); 252 const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs)); 253 // sort layers by Z order 254 uint32_t lz = l->currentState().z; 255 uint32_t rz = r->currentState().z; 256 // then by sequence, so we get a stable ordering 257 return (lz != rz) ? (lz - rz) : (l->sequence - r->sequence); 258 } 259 }; 260 261 struct State { 262 State() { 263 orientation = ISurfaceComposer::eOrientationDefault; 264 freezeDisplay = 0; 265 } 266 LayerVector layersSortedByZ; 267 uint8_t orientation; 268 uint8_t orientationType; 269 uint8_t freezeDisplay; 270 }; 271 272 virtual bool threadLoop(); 273 virtual status_t readyToRun(); 274 virtual void onFirstRef(); 275 276public: // hack to work around gcc 4.0.3 bug 277 const GraphicPlane& graphicPlane(int dpy) const; 278 GraphicPlane& graphicPlane(int dpy); 279private: 280 281 void waitForEvent(); 282public: // hack to work around gcc 4.0.3 bug 283 void signalEvent(); 284private: 285 void handleConsoleEvents(); 286 void handleTransaction(uint32_t transactionFlags); 287 void handleTransactionLocked( 288 uint32_t transactionFlags, 289 Vector< sp<LayerBase> >& ditchedLayers); 290 291 void computeVisibleRegions( 292 LayerVector& currentLayers, 293 Region& dirtyRegion, 294 Region& wormholeRegion); 295 296 void handlePageFlip(); 297 bool lockPageFlip(const LayerVector& currentLayers); 298 void unlockPageFlip(const LayerVector& currentLayers); 299 void handleRepaint(); 300 void postFramebuffer(); 301 void composeSurfaces(const Region& dirty); 302 void unlockClients(); 303 304 305 ssize_t addClientLayer(const sp<Client>& client, 306 const sp<LayerBaseClient>& lbc); 307 status_t addLayer_l(const sp<LayerBase>& layer); 308 status_t removeLayer_l(const sp<LayerBase>& layer); 309 status_t purgatorizeLayer_l(const sp<LayerBase>& layer); 310 311 uint32_t getTransactionFlags(uint32_t flags); 312 uint32_t setTransactionFlags(uint32_t flags); 313 void commitTransaction(); 314 315 316 friend class FreezeLock; 317 sp<FreezeLock> getFreezeLock() const; 318 inline void incFreezeCount() { 319 if (mFreezeCount == 0) 320 mFreezeDisplayTime = 0; 321 mFreezeCount++; 322 } 323 inline void decFreezeCount() { if (mFreezeCount > 0) mFreezeCount--; } 324 inline bool hasFreezeRequest() const { return mFreezeDisplay; } 325 inline bool isFrozen() const { 326 return (mFreezeDisplay || mFreezeCount>0) && mBootFinished; 327 } 328 329 330 void debugFlashRegions(); 331 void debugShowFPS() const; 332 void drawWormhole() const; 333 334 335 mutable MessageQueue mEventQueue; 336 337 status_t postMessageAsync(const sp<MessageBase>& msg, 338 nsecs_t reltime=0, uint32_t flags = 0); 339 340 status_t postMessageSync(const sp<MessageBase>& msg, 341 nsecs_t reltime=0, uint32_t flags = 0); 342 343 // access must be protected by mStateLock 344 mutable Mutex mStateLock; 345 State mCurrentState; 346 State mDrawingState; 347 volatile int32_t mTransactionFlags; 348 volatile int32_t mTransactionCount; 349 Condition mTransactionCV; 350 bool mResizeTransationPending; 351 352 // protected by mStateLock (but we could use another lock) 353 GraphicPlane mGraphicPlanes[1]; 354 bool mLayersRemoved; 355 DefaultKeyedVector< wp<IBinder>, wp<Layer> > mLayerMap; 356 357 // constant members (no synchronization needed for access) 358 sp<IMemoryHeap> mServerHeap; 359 surface_flinger_cblk_t* mServerCblk; 360 GLuint mWormholeTexName; 361 nsecs_t mBootTime; 362 Permission mHardwareTest; 363 Permission mAccessSurfaceFlinger; 364 Permission mDump; 365 366 // Can only accessed from the main thread, these members 367 // don't need synchronization 368 Region mDirtyRegion; 369 Region mDirtyRegionRemovedLayer; 370 Region mInvalidRegion; 371 Region mWormholeRegion; 372 bool mVisibleRegionsDirty; 373 bool mDeferReleaseConsole; 374 bool mFreezeDisplay; 375 int32_t mFreezeCount; 376 nsecs_t mFreezeDisplayTime; 377 Vector< sp<LayerBase> > mVisibleLayersSortedByZ; 378 379 380 // don't use a lock for these, we don't care 381 int mDebugRegion; 382 int mDebugBackground; 383 volatile nsecs_t mDebugInSwapBuffers; 384 nsecs_t mLastSwapBufferTime; 385 volatile nsecs_t mDebugInTransaction; 386 nsecs_t mLastTransactionTime; 387 bool mBootFinished; 388 389 // these are thread safe 390 mutable Barrier mReadyToRunBarrier; 391 392 // atomic variables 393 enum { 394 eConsoleReleased = 1, 395 eConsoleAcquired = 2 396 }; 397 volatile int32_t mConsoleSignals; 398 399 // only written in the main thread, only read in other threads 400 volatile int32_t mSecureFrameBuffer; 401}; 402 403// --------------------------------------------------------------------------- 404 405class FreezeLock : public LightRefBase<FreezeLock> { 406 SurfaceFlinger* mFlinger; 407public: 408 FreezeLock(SurfaceFlinger* flinger) 409 : mFlinger(flinger) { 410 mFlinger->incFreezeCount(); 411 } 412 ~FreezeLock() { 413 mFlinger->decFreezeCount(); 414 } 415}; 416 417// --------------------------------------------------------------------------- 418}; // namespace android 419 420#endif // ANDROID_SURFACE_FLINGER_H 421