2 * Copyright (C) 2007 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ANDROID_SURFACE_FLINGER_H
18 #define ANDROID_SURFACE_FLINGER_H
21 #include <sys/types.h>
26 * NOTE: Make sure this file doesn't include anything from <gl/ > or <gl2/ >
29 #include <cutils/compiler.h>
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>
38 #include <binder/IMemory.h>
40 #include <ui/PixelFormat.h>
42 #include <gui/ISurfaceComposer.h>
43 #include <gui/ISurfaceComposerClient.h>
45 #include <hardware/hwcomposer_defs.h>
47 #include <private/gui/LayerState.h>
50 #include "DisplayDevice.h"
51 #include "FrameTracker.h"
52 #include "MessageQueue.h"
54 #include "DisplayHardware/HWComposer.h"
55 #include "Effects/Daltonizer.h"
59 // ---------------------------------------------------------------------------
62 class DisplayEventConnection;
64 class IGraphicBufferAlloc;
70 // ---------------------------------------------------------------------------
73 eTransactionNeeded = 0x01,
74 eTraversalNeeded = 0x02,
75 eDisplayTransactionNeeded = 0x04,
76 eTransactionMask = 0x07
79 class SurfaceFlinger : public BnSurfaceComposer,
80 private IBinder::DeathRecipient,
81 private HWComposer::EventHandler
84 static char const* getServiceName() ANDROID_API {
85 return "SurfaceFlinger";
88 SurfaceFlinger() ANDROID_API;
90 // must be called before clients can connect
91 void init() ANDROID_API;
93 // starts SurfaceFlinger main loop in the current thread
94 void run() ANDROID_API;
97 EVENT_VSYNC = HWC_EVENT_VSYNC
100 // post an asynchronous message to the main thread
101 status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
103 // post a synchronous message to the main thread
104 status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
106 // force full composition on all displays
107 void repaintEverything();
109 // returns the default Display
110 sp<const DisplayDevice> getDefaultDisplayDevice() const {
111 return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
114 // utility function to delete a texture on the main thread
115 void deleteTextureAsync(uint32_t texture);
117 // enable/disable h/w composer event
118 // TODO: this should be made accessible only to EventThread
119 void eventControl(int disp, int event, int enabled);
121 // called on the main thread by MessageQueue when an internal message
123 // TODO: this should be made accessible only to MessageQueue
124 void onMessageReceived(int32_t what);
126 // for debugging only
127 // TODO: this should be made accessible only to HWComposer
128 const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
130 RenderEngine& getRenderEngine() const {
131 return *mRenderEngine;
136 friend class DisplayEventConnection;
138 friend class SurfaceTextureLayer;
140 // This value is specified in number of frames. Log frame stats at most
142 enum { LOG_FRAME_STATS_PERIOD = 30*60*60 };
144 // We're reference counted, never destroy SurfaceFlinger directly
145 virtual ~SurfaceFlinger();
147 /* ------------------------------------------------------------------------
148 * Internal data structures
151 class LayerVector : public SortedVector< sp<Layer> > {
154 LayerVector(const LayerVector& rhs);
155 virtual int do_compare(const void* lhs, const void* rhs) const;
158 struct DisplayDeviceState {
159 DisplayDeviceState();
160 DisplayDeviceState(DisplayDevice::DisplayType type);
161 bool isValid() const { return type >= 0; }
162 bool isMainDisplay() const { return type == DisplayDevice::DISPLAY_PRIMARY; }
163 bool isVirtualDisplay() const { return type >= DisplayDevice::DISPLAY_VIRTUAL; }
164 DisplayDevice::DisplayType type;
165 sp<IGraphicBufferProducer> surface;
175 LayerVector layersSortedByZ;
176 DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
179 /* ------------------------------------------------------------------------
182 virtual status_t onTransact(uint32_t code, const Parcel& data,
183 Parcel* reply, uint32_t flags);
184 virtual status_t dump(int fd, const Vector<String16>& args);
186 /* ------------------------------------------------------------------------
187 * ISurfaceComposer interface
189 virtual sp<ISurfaceComposerClient> createConnection();
190 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc();
191 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
192 virtual void destroyDisplay(const sp<IBinder>& display);
193 virtual sp<IBinder> getBuiltInDisplay(int32_t id);
194 virtual void setTransactionState(const Vector<ComposerState>& state,
195 const Vector<DisplayState>& displays, uint32_t flags);
196 virtual void bootFinished();
197 virtual bool authenticateSurfaceTexture(
198 const sp<IGraphicBufferProducer>& bufferProducer) const;
199 virtual sp<IDisplayEventConnection> createDisplayEventConnection();
200 virtual status_t captureScreen(const sp<IBinder>& display,
201 const sp<IGraphicBufferProducer>& producer,
202 uint32_t reqWidth, uint32_t reqHeight,
203 uint32_t minLayerZ, uint32_t maxLayerZ);
204 // called when screen needs to turn off
205 virtual void blank(const sp<IBinder>& display);
206 // called when screen is turning back on
207 virtual void unblank(const sp<IBinder>& display);
208 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info);
210 /* ------------------------------------------------------------------------
211 * DeathRecipient interface
213 virtual void binderDied(const wp<IBinder>& who);
215 /* ------------------------------------------------------------------------
218 virtual void onFirstRef();
220 /* ------------------------------------------------------------------------
221 * HWComposer::EventHandler interface
223 virtual void onVSyncReceived(int type, nsecs_t timestamp);
224 virtual void onHotplugReceived(int disp, bool connected);
226 /* ------------------------------------------------------------------------
230 void signalTransaction();
231 void signalLayerUpdate();
232 void signalRefresh();
234 // called on the main thread in response to initializeDisplays()
235 void onInitializeDisplays();
236 // called on the main thread in response to blank()
237 void onScreenReleased(const sp<const DisplayDevice>& hw);
238 // called on the main thread in response to unblank()
239 void onScreenAcquired(const sp<const DisplayDevice>& hw);
241 void handleMessageTransaction();
242 void handleMessageInvalidate();
243 void handleMessageRefresh();
245 void handleTransaction(uint32_t transactionFlags);
246 void handleTransactionLocked(uint32_t transactionFlags);
248 /* handlePageFilp: this is were we latch a new buffer
249 * if available and compute the dirty region.
251 void handlePageFlip();
253 /* ------------------------------------------------------------------------
256 uint32_t getTransactionFlags(uint32_t flags);
257 uint32_t peekTransactionFlags(uint32_t flags);
258 uint32_t setTransactionFlags(uint32_t flags);
259 void commitTransaction();
260 uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
261 uint32_t setDisplayStateLocked(const DisplayState& s);
263 /* ------------------------------------------------------------------------
266 status_t createLayer(const String8& name, const sp<Client>& client,
267 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
268 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp);
270 status_t createNormalLayer(const sp<Client>& client, const String8& name,
271 uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
272 sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
273 sp<Layer>* outLayer);
275 status_t createDimLayer(const sp<Client>& client, const String8& name,
276 uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
277 sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer);
279 // called in response to the window-manager calling
280 // ISurfaceComposerClient::destroySurface()
281 status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
283 // called when all clients have released all their references to
284 // this layer meaning it is entirely safe to destroy all
285 // resources associated to this layer.
286 status_t onLayerDestroyed(const wp<Layer>& layer);
288 // remove a layer from SurfaceFlinger immediately
289 status_t removeLayer(const sp<Layer>& layer);
291 // add a layer to SurfaceFlinger
292 void addClientLayer(const sp<Client>& client,
293 const sp<IBinder>& handle,
294 const sp<IGraphicBufferProducer>& gbc,
295 const sp<Layer>& lbc);
297 /* ------------------------------------------------------------------------
298 * Boot animation, on/off animations and screen capture
301 void startBootAnim();
303 void renderScreenImplLocked(
304 const sp<const DisplayDevice>& hw,
305 uint32_t reqWidth, uint32_t reqHeight,
306 uint32_t minLayerZ, uint32_t maxLayerZ,
309 status_t captureScreenImplLocked(
310 const sp<const DisplayDevice>& hw,
311 const sp<IGraphicBufferProducer>& producer,
312 uint32_t reqWidth, uint32_t reqHeight,
313 uint32_t minLayerZ, uint32_t maxLayerZ);
315 /* ------------------------------------------------------------------------
318 static status_t selectConfigForAttribute(EGLDisplay dpy,
319 EGLint const* attrs, EGLint attribute, EGLint value, EGLConfig* outConfig);
320 static status_t selectEGLConfig(EGLDisplay disp, EGLint visualId,
321 EGLint renderableType, EGLConfig* config);
322 size_t getMaxTextureSize() const;
323 size_t getMaxViewportDims() const;
325 /* ------------------------------------------------------------------------
326 * Display and layer stack management
328 // called when starting, or restarting after system_server death
329 void initializeDisplays();
331 // Create an IBinder for a builtin display and add it to current state
332 void createBuiltinDisplayLocked(DisplayDevice::DisplayType type);
334 // NOTE: can only be called from the main thread or with mStateLock held
335 sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
336 return mDisplays.valueFor(dpy);
339 // NOTE: can only be called from the main thread or with mStateLock held
340 sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
341 return mDisplays.valueFor(dpy);
344 // mark a region of a layer stack dirty. this updates the dirty
345 // region of all screens presenting this layer stack.
346 void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
348 // allocate a h/w composer display id
349 int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type);
351 /* ------------------------------------------------------------------------
355 HWComposer& getHwComposer() const { return *mHwc; }
357 /* ------------------------------------------------------------------------
360 void invalidateHwcGeometry();
361 static void computeVisibleRegions(
362 const LayerVector& currentLayers, uint32_t layerStack,
363 Region& dirtyRegion, Region& opaqueRegion);
365 void preComposition();
366 void postComposition();
367 void rebuildLayerStacks();
368 void setUpHWComposer();
369 void doComposition();
370 void doDebugFlashRegions();
371 void doDisplayComposition(const sp<const DisplayDevice>& hw, const Region& dirtyRegion);
372 void doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty);
374 void postFramebuffer();
375 void drawWormhole(const sp<const DisplayDevice>& hw, const Region& region) const;
377 /* ------------------------------------------------------------------------
382 /* ------------------------------------------------------------------------
383 * Debugging & dumpsys
385 void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const;
386 void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const;
387 void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result);
388 void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
389 bool startDdmConnection();
390 static void appendSfConfigString(String8& result);
391 void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
392 const sp<const DisplayDevice>& hw,
393 uint32_t minLayerZ, uint32_t maxLayerZ);
395 void logFrameStats();
397 /* ------------------------------------------------------------------------
401 // access must be protected by mStateLock
402 mutable Mutex mStateLock;
404 volatile int32_t mTransactionFlags;
405 Condition mTransactionCV;
406 bool mTransactionPending;
407 bool mAnimTransactionPending;
408 Vector< sp<Layer> > mLayersPendingRemoval;
409 SortedVector< wp<IBinder> > mGraphicBufferProducerList;
411 // protected by mStateLock (but we could use another lock)
414 // access must be protected by mInvalidateLock
415 volatile int32_t mRepaintEverything;
417 // constant members (no synchronization needed for access)
419 RenderEngine* mRenderEngine;
421 bool mGpuToCpuSupported;
422 sp<EventThread> mEventThread;
423 EGLContext mEGLContext;
424 EGLConfig mEGLConfig;
425 EGLDisplay mEGLDisplay;
426 EGLint mEGLNativeVisualId;
427 sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
429 // Can only accessed from the main thread, these members
430 // don't need synchronization
432 bool mVisibleRegionsDirty;
433 bool mHwWorkListDirty;
434 bool mAnimCompositionPending;
436 // this may only be written from the main thread with mStateLock held
437 // it may be read from other threads with mStateLock held
438 DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
440 // don't use a lock for these, we don't care
443 int mDebugDisableHWC;
444 int mDebugDisableTransformHint;
445 volatile nsecs_t mDebugInSwapBuffers;
446 nsecs_t mLastSwapBufferTime;
447 volatile nsecs_t mDebugInTransaction;
448 nsecs_t mLastTransactionTime;
451 // these are thread safe
452 mutable MessageQueue mEventQueue;
453 FrameTracker mAnimFrameTracker;
455 // protected by mDestroyedLayerLock;
456 mutable Mutex mDestroyedLayerLock;
457 Vector<Layer const *> mDestroyedLayers;
459 /* ------------------------------------------------------------------------
460 * Feature prototyping
463 Daltonizer mDaltonizer;
467 // ---------------------------------------------------------------------------
468 }; // namespace android
470 #endif // ANDROID_SURFACE_FLINGER_H