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"
52 #include "FrameTracker.h"
53 #include "MessageQueue.h"
55 #include "DisplayHardware/HWComposer.h"
56 #include "Effects/Daltonizer.h"
60 // ---------------------------------------------------------------------------
63 class DisplayEventConnection;
65 class IGraphicBufferAlloc;
70 class EventControlThread;
72 // ---------------------------------------------------------------------------
75 eTransactionNeeded = 0x01,
76 eTraversalNeeded = 0x02,
77 eDisplayTransactionNeeded = 0x04,
78 eTransactionMask = 0x07
81 class SurfaceFlinger : public BnSurfaceComposer,
82 private IBinder::DeathRecipient,
83 private HWComposer::EventHandler
86 static char const* getServiceName() ANDROID_API {
87 return "SurfaceFlinger";
90 SurfaceFlinger() ANDROID_API;
92 // must be called before clients can connect
93 void init() ANDROID_API;
95 // starts SurfaceFlinger main loop in the current thread
96 void run() ANDROID_API;
99 EVENT_VSYNC = HWC_EVENT_VSYNC
102 // post an asynchronous message to the main thread
103 status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
105 // post a synchronous message to the main thread
106 status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
108 // force full composition on all displays
109 void repaintEverything();
111 // returns the default Display
112 sp<const DisplayDevice> getDefaultDisplayDevice() const {
113 return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
116 // utility function to delete a texture on the main thread
117 void deleteTextureAsync(uint32_t texture);
119 // enable/disable h/w composer event
120 // TODO: this should be made accessible only to EventThread
121 void eventControl(int disp, int event, int enabled);
123 // called on the main thread by MessageQueue when an internal message
125 // TODO: this should be made accessible only to MessageQueue
126 void onMessageReceived(int32_t what);
128 // for debugging only
129 // TODO: this should be made accessible only to HWComposer
130 const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
132 RenderEngine& getRenderEngine() const {
133 return *mRenderEngine;
138 friend class DisplayEventConnection;
140 friend class SurfaceTextureLayer;
142 // This value is specified in number of frames. Log frame stats at most
144 enum { LOG_FRAME_STATS_PERIOD = 30*60*60 };
146 // We're reference counted, never destroy SurfaceFlinger directly
147 virtual ~SurfaceFlinger();
149 /* ------------------------------------------------------------------------
150 * Internal data structures
153 class LayerVector : public SortedVector< sp<Layer> > {
156 LayerVector(const LayerVector& rhs);
157 virtual int do_compare(const void* lhs, const void* rhs) const;
160 struct DisplayDeviceState {
161 DisplayDeviceState();
162 DisplayDeviceState(DisplayDevice::DisplayType type);
163 bool isValid() const { return type >= 0; }
164 bool isMainDisplay() const { return type == DisplayDevice::DISPLAY_PRIMARY; }
165 bool isVirtualDisplay() const { return type >= DisplayDevice::DISPLAY_VIRTUAL; }
166 DisplayDevice::DisplayType type;
167 sp<IGraphicBufferProducer> surface;
177 LayerVector layersSortedByZ;
178 DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
181 /* ------------------------------------------------------------------------
184 virtual status_t onTransact(uint32_t code, const Parcel& data,
185 Parcel* reply, uint32_t flags);
186 virtual status_t dump(int fd, const Vector<String16>& args);
188 /* ------------------------------------------------------------------------
189 * ISurfaceComposer interface
191 virtual sp<ISurfaceComposerClient> createConnection();
192 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc();
193 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
194 virtual void destroyDisplay(const sp<IBinder>& display);
195 virtual sp<IBinder> getBuiltInDisplay(int32_t id);
196 virtual void setTransactionState(const Vector<ComposerState>& state,
197 const Vector<DisplayState>& displays, uint32_t flags);
198 virtual void bootFinished();
199 virtual bool authenticateSurfaceTexture(
200 const sp<IGraphicBufferProducer>& bufferProducer) const;
201 virtual sp<IDisplayEventConnection> createDisplayEventConnection();
202 virtual status_t captureScreen(const sp<IBinder>& display,
203 const sp<IGraphicBufferProducer>& producer,
204 uint32_t reqWidth, uint32_t reqHeight,
205 uint32_t minLayerZ, uint32_t maxLayerZ);
206 // called when screen needs to turn off
207 virtual void blank(const sp<IBinder>& display);
208 // called when screen is turning back on
209 virtual void unblank(const sp<IBinder>& display);
210 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info);
212 /* ------------------------------------------------------------------------
213 * DeathRecipient interface
215 virtual void binderDied(const wp<IBinder>& who);
217 /* ------------------------------------------------------------------------
220 virtual void onFirstRef();
222 /* ------------------------------------------------------------------------
223 * HWComposer::EventHandler interface
225 virtual void onVSyncReceived(int type, nsecs_t timestamp);
226 virtual void onHotplugReceived(int disp, bool connected);
228 /* ------------------------------------------------------------------------
232 void signalTransaction();
233 void signalLayerUpdate();
234 void signalRefresh();
236 // called on the main thread in response to initializeDisplays()
237 void onInitializeDisplays();
238 // called on the main thread in response to blank()
239 void onScreenReleased(const sp<const DisplayDevice>& hw);
240 // called on the main thread in response to unblank()
241 void onScreenAcquired(const sp<const DisplayDevice>& hw);
243 void handleMessageTransaction();
244 void handleMessageInvalidate();
245 void handleMessageRefresh();
247 void handleTransaction(uint32_t transactionFlags);
248 void handleTransactionLocked(uint32_t transactionFlags);
250 /* handlePageFilp: this is were we latch a new buffer
251 * if available and compute the dirty region.
253 void handlePageFlip();
255 /* ------------------------------------------------------------------------
258 uint32_t getTransactionFlags(uint32_t flags);
259 uint32_t peekTransactionFlags(uint32_t flags);
260 uint32_t setTransactionFlags(uint32_t flags);
261 void commitTransaction();
262 uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
263 uint32_t setDisplayStateLocked(const DisplayState& s);
265 /* ------------------------------------------------------------------------
268 status_t createLayer(const String8& name, const sp<Client>& client,
269 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
270 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp);
272 status_t createNormalLayer(const sp<Client>& client, const String8& name,
273 uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
274 sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
275 sp<Layer>* outLayer);
277 status_t createDimLayer(const sp<Client>& client, const String8& name,
278 uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
279 sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer);
281 // called in response to the window-manager calling
282 // ISurfaceComposerClient::destroySurface()
283 status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
285 // called when all clients have released all their references to
286 // this layer meaning it is entirely safe to destroy all
287 // resources associated to this layer.
288 status_t onLayerDestroyed(const wp<Layer>& layer);
290 // remove a layer from SurfaceFlinger immediately
291 status_t removeLayer(const sp<Layer>& layer);
293 // add a layer to SurfaceFlinger
294 void addClientLayer(const sp<Client>& client,
295 const sp<IBinder>& handle,
296 const sp<IGraphicBufferProducer>& gbc,
297 const sp<Layer>& lbc);
299 /* ------------------------------------------------------------------------
300 * Boot animation, on/off animations and screen capture
303 void startBootAnim();
305 void renderScreenImplLocked(
306 const sp<const DisplayDevice>& hw,
307 uint32_t reqWidth, uint32_t reqHeight,
308 uint32_t minLayerZ, uint32_t maxLayerZ,
311 status_t captureScreenImplLocked(
312 const sp<const DisplayDevice>& hw,
313 const sp<IGraphicBufferProducer>& producer,
314 uint32_t reqWidth, uint32_t reqHeight,
315 uint32_t minLayerZ, uint32_t maxLayerZ);
317 /* ------------------------------------------------------------------------
320 static status_t selectConfigForAttribute(EGLDisplay dpy,
321 EGLint const* attrs, EGLint attribute, EGLint value, EGLConfig* outConfig);
322 static status_t selectEGLConfig(EGLDisplay disp, EGLint visualId,
323 EGLint renderableType, EGLConfig* config);
324 size_t getMaxTextureSize() const;
325 size_t getMaxViewportDims() const;
327 /* ------------------------------------------------------------------------
328 * Display and layer stack management
330 // called when starting, or restarting after system_server death
331 void initializeDisplays();
333 // Create an IBinder for a builtin display and add it to current state
334 void createBuiltinDisplayLocked(DisplayDevice::DisplayType type);
336 // NOTE: can only be called from the main thread or with mStateLock held
337 sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
338 return mDisplays.valueFor(dpy);
341 // NOTE: can only be called from the main thread or with mStateLock held
342 sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
343 return mDisplays.valueFor(dpy);
346 // mark a region of a layer stack dirty. this updates the dirty
347 // region of all screens presenting this layer stack.
348 void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
350 // allocate a h/w composer display id
351 int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type);
353 /* ------------------------------------------------------------------------
357 HWComposer& getHwComposer() const { return *mHwc; }
359 /* ------------------------------------------------------------------------
362 void invalidateHwcGeometry();
363 static void computeVisibleRegions(
364 const LayerVector& currentLayers, uint32_t layerStack,
365 Region& dirtyRegion, Region& opaqueRegion);
367 void preComposition();
368 void postComposition();
369 void rebuildLayerStacks();
370 void setUpHWComposer();
371 void doComposition();
372 void doDebugFlashRegions();
373 void doDisplayComposition(const sp<const DisplayDevice>& hw, const Region& dirtyRegion);
374 void doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty);
376 void postFramebuffer();
377 void drawWormhole(const sp<const DisplayDevice>& hw, const Region& region) const;
379 /* ------------------------------------------------------------------------
383 /* ------------------------------------------------------------------------
386 void enableHardwareVsync();
387 void disableHardwareVsync(bool makeUnavailable);
388 void resyncToHardwareVsync(bool makeAvailable);
390 /* ------------------------------------------------------------------------
391 * Debugging & dumpsys
393 void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const;
394 void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const;
395 void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result);
396 void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
397 bool startDdmConnection();
398 static void appendSfConfigString(String8& result);
399 void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
400 const sp<const DisplayDevice>& hw,
401 uint32_t minLayerZ, uint32_t maxLayerZ);
403 void logFrameStats();
405 /* ------------------------------------------------------------------------
409 // access must be protected by mStateLock
410 mutable Mutex mStateLock;
412 volatile int32_t mTransactionFlags;
413 Condition mTransactionCV;
414 bool mTransactionPending;
415 bool mAnimTransactionPending;
416 Vector< sp<Layer> > mLayersPendingRemoval;
417 SortedVector< wp<IBinder> > mGraphicBufferProducerList;
419 // protected by mStateLock (but we could use another lock)
422 // access must be protected by mInvalidateLock
423 volatile int32_t mRepaintEverything;
425 // constant members (no synchronization needed for access)
427 RenderEngine* mRenderEngine;
429 bool mGpuToCpuSupported;
430 sp<EventThread> mEventThread;
431 sp<EventThread> mSFEventThread;
432 sp<EventControlThread> mEventControlThread;
433 EGLContext mEGLContext;
434 EGLConfig mEGLConfig;
435 EGLDisplay mEGLDisplay;
436 EGLint mEGLNativeVisualId;
437 sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
439 // Can only accessed from the main thread, these members
440 // don't need synchronization
442 bool mVisibleRegionsDirty;
443 bool mHwWorkListDirty;
444 bool mAnimCompositionPending;
446 // this may only be written from the main thread with mStateLock held
447 // it may be read from other threads with mStateLock held
448 DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
450 // don't use a lock for these, we don't care
453 int mDebugDisableHWC;
454 int mDebugDisableTransformHint;
455 volatile nsecs_t mDebugInSwapBuffers;
456 nsecs_t mLastSwapBufferTime;
457 volatile nsecs_t mDebugInTransaction;
458 nsecs_t mLastTransactionTime;
461 // these are thread safe
462 mutable MessageQueue mEventQueue;
463 FrameTracker mAnimFrameTracker;
464 DispSync mPrimaryDispSync;
466 // protected by mDestroyedLayerLock;
467 mutable Mutex mDestroyedLayerLock;
468 Vector<Layer const *> mDestroyedLayers;
470 // protected by mHWVsyncLock
472 bool mPrimaryHWVsyncEnabled;
473 bool mHWVsyncAvailable;
475 /* ------------------------------------------------------------------------
476 * Feature prototyping
479 Daltonizer mDaltonizer;
483 }; // namespace android
485 #endif // ANDROID_SURFACE_FLINGER_H