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;
71 // ---------------------------------------------------------------------------
74 eTransactionNeeded = 0x01,
75 eTraversalNeeded = 0x02,
76 eDisplayTransactionNeeded = 0x04,
77 eTransactionMask = 0x07
80 class SurfaceFlinger : public BnSurfaceComposer,
81 private IBinder::DeathRecipient,
82 private HWComposer::EventHandler
85 static char const* getServiceName() ANDROID_API {
86 return "SurfaceFlinger";
89 SurfaceFlinger() ANDROID_API;
91 // must be called before clients can connect
92 void init() ANDROID_API;
94 // starts SurfaceFlinger main loop in the current thread
95 void run() ANDROID_API;
98 EVENT_VSYNC = HWC_EVENT_VSYNC
101 // post an asynchronous message to the main thread
102 status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
104 // post a synchronous message to the main thread
105 status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0, uint32_t flags = 0);
107 // force full composition on all displays
108 void repaintEverything();
110 // returns the default Display
111 sp<const DisplayDevice> getDefaultDisplayDevice() const {
112 return getDisplayDevice(mBuiltinDisplays[DisplayDevice::DISPLAY_PRIMARY]);
115 // utility function to delete a texture on the main thread
116 void deleteTextureAsync(uint32_t texture);
118 // enable/disable h/w composer event
119 // TODO: this should be made accessible only to EventThread
120 void eventControl(int disp, int event, int enabled);
122 // called on the main thread by MessageQueue when an internal message
124 // TODO: this should be made accessible only to MessageQueue
125 void onMessageReceived(int32_t what);
127 // for debugging only
128 // TODO: this should be made accessible only to HWComposer
129 const Vector< sp<Layer> >& getLayerSortedByZForHwcDisplay(int id);
131 RenderEngine& getRenderEngine() const {
132 return *mRenderEngine;
137 friend class DisplayEventConnection;
139 friend class SurfaceTextureLayer;
141 // This value is specified in number of frames. Log frame stats at most
143 enum { LOG_FRAME_STATS_PERIOD = 30*60*60 };
145 // We're reference counted, never destroy SurfaceFlinger directly
146 virtual ~SurfaceFlinger();
148 /* ------------------------------------------------------------------------
149 * Internal data structures
152 class LayerVector : public SortedVector< sp<Layer> > {
155 LayerVector(const LayerVector& rhs);
156 virtual int do_compare(const void* lhs, const void* rhs) const;
159 struct DisplayDeviceState {
160 DisplayDeviceState();
161 DisplayDeviceState(DisplayDevice::DisplayType type);
162 bool isValid() const { return type >= 0; }
163 bool isMainDisplay() const { return type == DisplayDevice::DISPLAY_PRIMARY; }
164 bool isVirtualDisplay() const { return type >= DisplayDevice::DISPLAY_VIRTUAL; }
165 DisplayDevice::DisplayType type;
166 sp<IGraphicBufferProducer> surface;
176 LayerVector layersSortedByZ;
177 DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
180 /* ------------------------------------------------------------------------
183 virtual status_t onTransact(uint32_t code, const Parcel& data,
184 Parcel* reply, uint32_t flags);
185 virtual status_t dump(int fd, const Vector<String16>& args);
187 /* ------------------------------------------------------------------------
188 * ISurfaceComposer interface
190 virtual sp<ISurfaceComposerClient> createConnection();
191 virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc();
192 virtual sp<IBinder> createDisplay(const String8& displayName, bool secure);
193 virtual void destroyDisplay(const sp<IBinder>& display);
194 virtual sp<IBinder> getBuiltInDisplay(int32_t id);
195 virtual void setTransactionState(const Vector<ComposerState>& state,
196 const Vector<DisplayState>& displays, uint32_t flags);
197 virtual void bootFinished();
198 virtual bool authenticateSurfaceTexture(
199 const sp<IGraphicBufferProducer>& bufferProducer) const;
200 virtual sp<IDisplayEventConnection> createDisplayEventConnection();
201 virtual status_t captureScreen(const sp<IBinder>& display,
202 const sp<IGraphicBufferProducer>& producer,
203 uint32_t reqWidth, uint32_t reqHeight,
204 uint32_t minLayerZ, uint32_t maxLayerZ);
205 // called when screen needs to turn off
206 virtual void blank(const sp<IBinder>& display);
207 // called when screen is turning back on
208 virtual void unblank(const sp<IBinder>& display);
209 virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info);
211 /* ------------------------------------------------------------------------
212 * DeathRecipient interface
214 virtual void binderDied(const wp<IBinder>& who);
216 /* ------------------------------------------------------------------------
219 virtual void onFirstRef();
221 /* ------------------------------------------------------------------------
222 * HWComposer::EventHandler interface
224 virtual void onVSyncReceived(int type, nsecs_t timestamp);
225 virtual void onHotplugReceived(int disp, bool connected);
227 /* ------------------------------------------------------------------------
231 void signalTransaction();
232 void signalLayerUpdate();
233 void signalRefresh();
235 // called on the main thread in response to initializeDisplays()
236 void onInitializeDisplays();
237 // called on the main thread in response to blank()
238 void onScreenReleased(const sp<const DisplayDevice>& hw);
239 // called on the main thread in response to unblank()
240 void onScreenAcquired(const sp<const DisplayDevice>& hw);
242 void handleMessageTransaction();
243 void handleMessageInvalidate();
244 void handleMessageRefresh();
246 void handleTransaction(uint32_t transactionFlags);
247 void handleTransactionLocked(uint32_t transactionFlags);
249 /* handlePageFilp: this is were we latch a new buffer
250 * if available and compute the dirty region.
252 void handlePageFlip();
254 /* ------------------------------------------------------------------------
257 uint32_t getTransactionFlags(uint32_t flags);
258 uint32_t peekTransactionFlags(uint32_t flags);
259 uint32_t setTransactionFlags(uint32_t flags);
260 void commitTransaction();
261 uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
262 uint32_t setDisplayStateLocked(const DisplayState& s);
264 /* ------------------------------------------------------------------------
267 status_t createLayer(const String8& name, const sp<Client>& client,
268 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
269 sp<IBinder>* handle, sp<IGraphicBufferProducer>* gbp);
271 status_t createNormalLayer(const sp<Client>& client, const String8& name,
272 uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format,
273 sp<IBinder>* outHandle, sp<IGraphicBufferProducer>* outGbp,
274 sp<Layer>* outLayer);
276 status_t createDimLayer(const sp<Client>& client, const String8& name,
277 uint32_t w, uint32_t h, uint32_t flags, sp<IBinder>* outHandle,
278 sp<IGraphicBufferProducer>* outGbp, sp<Layer>* outLayer);
280 // called in response to the window-manager calling
281 // ISurfaceComposerClient::destroySurface()
282 status_t onLayerRemoved(const sp<Client>& client, const sp<IBinder>& handle);
284 // called when all clients have released all their references to
285 // this layer meaning it is entirely safe to destroy all
286 // resources associated to this layer.
287 status_t onLayerDestroyed(const wp<Layer>& layer);
289 // remove a layer from SurfaceFlinger immediately
290 status_t removeLayer(const sp<Layer>& layer);
292 // add a layer to SurfaceFlinger
293 void addClientLayer(const sp<Client>& client,
294 const sp<IBinder>& handle,
295 const sp<IGraphicBufferProducer>& gbc,
296 const sp<Layer>& lbc);
298 /* ------------------------------------------------------------------------
299 * Boot animation, on/off animations and screen capture
302 void startBootAnim();
304 void renderScreenImplLocked(
305 const sp<const DisplayDevice>& hw,
306 uint32_t reqWidth, uint32_t reqHeight,
307 uint32_t minLayerZ, uint32_t maxLayerZ,
310 status_t captureScreenImplLocked(
311 const sp<const DisplayDevice>& hw,
312 const sp<IGraphicBufferProducer>& producer,
313 uint32_t reqWidth, uint32_t reqHeight,
314 uint32_t minLayerZ, uint32_t maxLayerZ);
316 /* ------------------------------------------------------------------------
319 static status_t selectConfigForAttribute(EGLDisplay dpy,
320 EGLint const* attrs, EGLint attribute, EGLint value, EGLConfig* outConfig);
321 static status_t selectEGLConfig(EGLDisplay disp, EGLint visualId,
322 EGLint renderableType, EGLConfig* config);
323 size_t getMaxTextureSize() const;
324 size_t getMaxViewportDims() const;
326 /* ------------------------------------------------------------------------
327 * Display and layer stack management
329 // called when starting, or restarting after system_server death
330 void initializeDisplays();
332 // Create an IBinder for a builtin display and add it to current state
333 void createBuiltinDisplayLocked(DisplayDevice::DisplayType type);
335 // NOTE: can only be called from the main thread or with mStateLock held
336 sp<const DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) const {
337 return mDisplays.valueFor(dpy);
340 // NOTE: can only be called from the main thread or with mStateLock held
341 sp<DisplayDevice> getDisplayDevice(const wp<IBinder>& dpy) {
342 return mDisplays.valueFor(dpy);
345 // mark a region of a layer stack dirty. this updates the dirty
346 // region of all screens presenting this layer stack.
347 void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
349 // allocate a h/w composer display id
350 int32_t allocateHwcDisplayId(DisplayDevice::DisplayType type);
352 /* ------------------------------------------------------------------------
356 HWComposer& getHwComposer() const { return *mHwc; }
358 /* ------------------------------------------------------------------------
361 void invalidateHwcGeometry();
362 static void computeVisibleRegions(
363 const LayerVector& currentLayers, uint32_t layerStack,
364 Region& dirtyRegion, Region& opaqueRegion);
366 void preComposition();
367 void postComposition();
368 void rebuildLayerStacks();
369 void setUpHWComposer();
370 void doComposition();
371 void doDebugFlashRegions();
372 void doDisplayComposition(const sp<const DisplayDevice>& hw, const Region& dirtyRegion);
373 void doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty);
375 void postFramebuffer();
376 void drawWormhole(const sp<const DisplayDevice>& hw, const Region& region) const;
378 /* ------------------------------------------------------------------------
382 /* ------------------------------------------------------------------------
385 void enableHardwareVsync();
386 void disableHardwareVsync();
387 void resyncToHardwareVsync();
389 /* ------------------------------------------------------------------------
390 * Debugging & dumpsys
392 void listLayersLocked(const Vector<String16>& args, size_t& index, String8& result) const;
393 void dumpStatsLocked(const Vector<String16>& args, size_t& index, String8& result) const;
394 void clearStatsLocked(const Vector<String16>& args, size_t& index, String8& result);
395 void dumpAllLocked(const Vector<String16>& args, size_t& index, String8& result) const;
396 bool startDdmConnection();
397 static void appendSfConfigString(String8& result);
398 void checkScreenshot(size_t w, size_t s, size_t h, void const* vaddr,
399 const sp<const DisplayDevice>& hw,
400 uint32_t minLayerZ, uint32_t maxLayerZ);
402 void logFrameStats();
404 /* ------------------------------------------------------------------------
408 // access must be protected by mStateLock
409 mutable Mutex mStateLock;
411 volatile int32_t mTransactionFlags;
412 Condition mTransactionCV;
413 bool mTransactionPending;
414 bool mAnimTransactionPending;
415 Vector< sp<Layer> > mLayersPendingRemoval;
416 SortedVector< wp<IBinder> > mGraphicBufferProducerList;
418 // protected by mStateLock (but we could use another lock)
421 // access must be protected by mInvalidateLock
422 volatile int32_t mRepaintEverything;
424 // constant members (no synchronization needed for access)
426 RenderEngine* mRenderEngine;
428 bool mGpuToCpuSupported;
429 sp<EventThread> mEventThread;
430 EGLContext mEGLContext;
431 EGLConfig mEGLConfig;
432 EGLDisplay mEGLDisplay;
433 EGLint mEGLNativeVisualId;
434 sp<IBinder> mBuiltinDisplays[DisplayDevice::NUM_BUILTIN_DISPLAY_TYPES];
436 // Can only accessed from the main thread, these members
437 // don't need synchronization
439 bool mVisibleRegionsDirty;
440 bool mHwWorkListDirty;
441 bool mAnimCompositionPending;
443 // this may only be written from the main thread with mStateLock held
444 // it may be read from other threads with mStateLock held
445 DefaultKeyedVector< wp<IBinder>, sp<DisplayDevice> > mDisplays;
447 // don't use a lock for these, we don't care
450 int mDebugDisableHWC;
451 int mDebugDisableTransformHint;
452 volatile nsecs_t mDebugInSwapBuffers;
453 nsecs_t mLastSwapBufferTime;
454 volatile nsecs_t mDebugInTransaction;
455 nsecs_t mLastTransactionTime;
458 // these are thread safe
459 mutable MessageQueue mEventQueue;
460 FrameTracker mAnimFrameTracker;
461 DispSync mPrimaryDispSync;
463 // protected by mDestroyedLayerLock;
464 mutable Mutex mDestroyedLayerLock;
465 Vector<Layer const *> mDestroyedLayers;
467 // protected by mHWVsyncLock
469 bool mPrimaryHWVsyncEnabled;
471 /* ------------------------------------------------------------------------
472 * Feature prototyping
475 Daltonizer mDaltonizer;
479 // ---------------------------------------------------------------------------
480 }; // namespace android
482 #endif // ANDROID_SURFACE_FLINGER_H