Layer.h revision 0c2de3681db029180ed13b02f090bfa1636bae1c
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_LAYER_H 18#define ANDROID_LAYER_H 19 20#include <sys/types.h> 21 22#include <utils/RefBase.h> 23#include <utils/String8.h> 24#include <utils/Timers.h> 25 26#include <ui/FloatRect.h> 27#include <ui/FrameStats.h> 28#include <ui/GraphicBuffer.h> 29#include <ui/PixelFormat.h> 30#include <ui/Region.h> 31 32#include <gui/ISurfaceComposerClient.h> 33#include <gui/LayerState.h> 34#include <gui/BufferQueue.h> 35 36#include <list> 37#include <cstdint> 38 39#include "Client.h" 40#include "FrameTracker.h" 41#include "LayerVector.h" 42#include "MonitoredProducer.h" 43#include "SurfaceFlinger.h" 44#include "Transform.h" 45 46#include <layerproto/LayerProtoHeader.h> 47#include "DisplayHardware/HWComposer.h" 48#include "DisplayHardware/HWComposerBufferCache.h" 49#include "RenderArea.h" 50#include "RenderEngine/Mesh.h" 51#include "RenderEngine/Texture.h" 52 53#include <math/vec4.h> 54 55using namespace android::surfaceflinger; 56 57namespace android { 58 59// --------------------------------------------------------------------------- 60 61class Client; 62class Colorizer; 63class DisplayDevice; 64class GraphicBuffer; 65class SurfaceFlinger; 66class LayerDebugInfo; 67class LayerBE; 68 69// --------------------------------------------------------------------------- 70 71struct CompositionInfo { 72 HWC2::Composition compositionType; 73 sp<GraphicBuffer> mBuffer = nullptr; 74 int mBufferSlot = BufferQueue::INVALID_BUFFER_SLOT; 75 struct { 76 HWComposer* hwc; 77 sp<Fence> fence; 78 HWC2::BlendMode blendMode; 79 Rect displayFrame; 80 float alpha; 81 FloatRect sourceCrop; 82 HWC2::Transform transform; 83 int z; 84 int type; 85 int appId; 86 Region visibleRegion; 87 Region surfaceDamage; 88 sp<NativeHandle> sidebandStream; 89 android_dataspace dataspace; 90 hwc_color_t color; 91 } hwc; 92 struct { 93 RE::RenderEngine* renderEngine; 94 Mesh* mesh; 95 } renderEngine; 96}; 97 98class LayerBE { 99public: 100 LayerBE(); 101 102 // The mesh used to draw the layer in GLES composition mode 103 Mesh mMesh; 104 105 // HWC items, accessed from the main thread 106 struct HWCInfo { 107 HWCInfo() 108 : hwc(nullptr), 109 layer(nullptr), 110 forceClientComposition(false), 111 compositionType(HWC2::Composition::Invalid), 112 clearClientTarget(false) {} 113 114 HWComposer* hwc; 115 HWC2::Layer* layer; 116 bool forceClientComposition; 117 HWC2::Composition compositionType; 118 bool clearClientTarget; 119 Rect displayFrame; 120 FloatRect sourceCrop; 121 HWComposerBufferCache bufferCache; 122 }; 123 124 // A layer can be attached to multiple displays when operating in mirror mode 125 // (a.k.a: when several displays are attached with equal layerStack). In this 126 // case we need to keep track. In non-mirror mode, a layer will have only one 127 // HWCInfo. This map key is a display layerStack. 128 std::unordered_map<int32_t, HWCInfo> mHwcLayers; 129 130 CompositionInfo compositionInfo; 131}; 132 133class Layer : public virtual RefBase { 134 static int32_t sSequence; 135 136public: 137 LayerBE& getBE() { return mBE; } 138 LayerBE& getBE() const { return mBE; } 139 mutable bool contentDirty; 140 // regions below are in window-manager space 141 Region visibleRegion; 142 Region coveredRegion; 143 Region visibleNonTransparentRegion; 144 Region surfaceDamageRegion; 145 146 // Layer serial number. This gives layers an explicit ordering, so we 147 // have a stable sort order when their layer stack and Z-order are 148 // the same. 149 int32_t sequence; 150 151 enum { // flags for doTransaction() 152 eDontUpdateGeometryState = 0x00000001, 153 eVisibleRegion = 0x00000002, 154 }; 155 156 struct Geometry { 157 uint32_t w; 158 uint32_t h; 159 Transform transform; 160 161 inline bool operator==(const Geometry& rhs) const { 162 return (w == rhs.w && h == rhs.h) && (transform.tx() == rhs.transform.tx()) && 163 (transform.ty() == rhs.transform.ty()); 164 } 165 inline bool operator!=(const Geometry& rhs) const { return !operator==(rhs); } 166 }; 167 168 struct State { 169 Geometry active; 170 Geometry requested; 171 int32_t z; 172 173 // The identifier of the layer stack this layer belongs to. A layer can 174 // only be associated to a single layer stack. A layer stack is a 175 // z-ordered group of layers which can be associated to one or more 176 // displays. Using the same layer stack on different displays is a way 177 // to achieve mirroring. 178 uint32_t layerStack; 179 180 uint8_t flags; 181 uint8_t mask; 182 uint8_t reserved[2]; 183 int32_t sequence; // changes when visible regions can change 184 bool modified; 185 186 // Crop is expressed in layer space coordinate. 187 Rect crop; 188 Rect requestedCrop; 189 190 // finalCrop is expressed in display space coordinate. 191 Rect finalCrop; 192 Rect requestedFinalCrop; 193 194 // If set, defers this state update until the identified Layer 195 // receives a frame with the given frameNumber 196 wp<Layer> barrierLayer; 197 uint64_t frameNumber; 198 199 // the transparentRegion hint is a bit special, it's latched only 200 // when we receive a buffer -- this is because it's "content" 201 // dependent. 202 Region activeTransparentRegion; 203 Region requestedTransparentRegion; 204 android_dataspace dataSpace; 205 206 int32_t appId; 207 int32_t type; 208 209 // If non-null, a Surface this Surface's Z-order is interpreted relative to. 210 wp<Layer> zOrderRelativeOf; 211 212 // A list of surfaces whose Z-order is interpreted relative to ours. 213 SortedVector<wp<Layer>> zOrderRelatives; 214 215 half4 color; 216 }; 217 218 Layer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name, uint32_t w, 219 uint32_t h, uint32_t flags); 220 virtual ~Layer(); 221 222 void setPrimaryDisplayOnly() { mPrimaryDisplayOnly = true; } 223 224 // ------------------------------------------------------------------------ 225 // Geometry setting functions. 226 // 227 // The following group of functions are used to specify the layers 228 // bounds, and the mapping of the texture on to those bounds. According 229 // to various settings changes to them may apply immediately, or be delayed until 230 // a pending resize is completed by the producer submitting a buffer. For example 231 // if we were to change the buffer size, and update the matrix ahead of the 232 // new buffer arriving, then we would be stretching the buffer to a different 233 // aspect before and after the buffer arriving, which probably isn't what we wanted. 234 // 235 // The first set of geometry functions are controlled by the scaling mode, described 236 // in window.h. The scaling mode may be set by the client, as it submits buffers. 237 // This value may be overriden through SurfaceControl, with setOverrideScalingMode. 238 // 239 // Put simply, if our scaling mode is SCALING_MODE_FREEZE, then 240 // matrix updates will not be applied while a resize is pending 241 // and the size and transform will remain in their previous state 242 // until a new buffer is submitted. If the scaling mode is another value 243 // then the old-buffer will immediately be scaled to the pending size 244 // and the new matrix will be immediately applied following this scaling 245 // transformation. 246 247 // Set the default buffer size for the assosciated Producer, in pixels. This is 248 // also the rendered size of the layer prior to any transformations. Parent 249 // or local matrix transformations will not affect the size of the buffer, 250 // but may affect it's on-screen size or clipping. 251 bool setSize(uint32_t w, uint32_t h); 252 // Set a 2x2 transformation matrix on the layer. This transform 253 // will be applied after parent transforms, but before any final 254 // producer specified transform. 255 bool setMatrix(const layer_state_t::matrix22_t& matrix); 256 257 // This second set of geometry attributes are controlled by 258 // setGeometryAppliesWithResize, and their default mode is to be 259 // immediate. If setGeometryAppliesWithResize is specified 260 // while a resize is pending, then update of these attributes will 261 // be delayed until the resize completes. 262 263 // setPosition operates in parent buffer space (pre parent-transform) or display 264 // space for top-level layers. 265 bool setPosition(float x, float y, bool immediate); 266 // Buffer space 267 bool setCrop(const Rect& crop, bool immediate); 268 // Parent buffer space/display space 269 bool setFinalCrop(const Rect& crop, bool immediate); 270 271 // TODO(b/38182121): Could we eliminate the various latching modes by 272 // using the layer hierarchy? 273 // ----------------------------------------------------------------------- 274 bool setLayer(int32_t z); 275 bool setRelativeLayer(const sp<IBinder>& relativeToHandle, int32_t relativeZ); 276 277 bool setAlpha(float alpha); 278 bool setColor(const half3& color); 279 bool setTransparentRegionHint(const Region& transparent); 280 bool setFlags(uint8_t flags, uint8_t mask); 281 bool setLayerStack(uint32_t layerStack); 282 bool setDataSpace(android_dataspace dataSpace); 283 android_dataspace getDataSpace() const; 284 uint32_t getLayerStack() const; 285 void deferTransactionUntil(const sp<IBinder>& barrierHandle, uint64_t frameNumber); 286 void deferTransactionUntil(const sp<Layer>& barrierLayer, uint64_t frameNumber); 287 bool setOverrideScalingMode(int32_t overrideScalingMode); 288 void setInfo(int32_t type, int32_t appId); 289 bool reparentChildren(const sp<IBinder>& layer); 290 void setChildrenDrawingParent(const sp<Layer>& layer); 291 bool reparent(const sp<IBinder>& newParentHandle); 292 bool detachChildren(); 293 294 // If we have received a new buffer this frame, we will pass its surface 295 // damage down to hardware composer. Otherwise, we must send a region with 296 // one empty rect. 297 virtual void useSurfaceDamage() {} 298 virtual void useEmptyDamage() {} 299 300 uint32_t getTransactionFlags(uint32_t flags); 301 uint32_t setTransactionFlags(uint32_t flags); 302 303 bool belongsToDisplay(uint32_t layerStack, bool isPrimaryDisplay) const { 304 return getLayerStack() == layerStack && (!mPrimaryDisplayOnly || isPrimaryDisplay); 305 } 306 307 void computeGeometry(const RenderArea& renderArea, Mesh& mesh, bool useIdentityTransform) const; 308 FloatRect computeBounds(const Region& activeTransparentRegion) const; 309 FloatRect computeBounds() const; 310 311 int32_t getSequence() const { return sequence; } 312 313 // ----------------------------------------------------------------------- 314 // Virtuals 315 virtual const char* getTypeId() const = 0; 316 317 /* 318 * isOpaque - true if this surface is opaque 319 * 320 * This takes into account the buffer format (i.e. whether or not the 321 * pixel format includes an alpha channel) and the "opaque" flag set 322 * on the layer. It does not examine the current plane alpha value. 323 */ 324 virtual bool isOpaque(const Layer::State&) const { return false; } 325 326 /* 327 * isSecure - true if this surface is secure, that is if it prevents 328 * screenshots or VNC servers. 329 */ 330 bool isSecure() const; 331 332 /* 333 * isVisible - true if this layer is visible, false otherwise 334 */ 335 virtual bool isVisible() const = 0; 336 337 /* 338 * isHiddenByPolicy - true if this layer has been forced invisible. 339 * just because this is false, doesn't mean isVisible() is true. 340 * For example if this layer has no active buffer, it may not be hidden by 341 * policy, but it still can not be visible. 342 */ 343 bool isHiddenByPolicy() const; 344 345 /* 346 * isFixedSize - true if content has a fixed size 347 */ 348 virtual bool isFixedSize() const { return true; } 349 350 351 bool isPendingRemoval() const { return mPendingRemoval; } 352 353 void writeToProto(LayerProto* layerInfo, 354 LayerVector::StateSet stateSet = LayerVector::StateSet::Drawing); 355 356protected: 357 /* 358 * onDraw - draws the surface. 359 */ 360 virtual void onDraw(const RenderArea& renderArea, const Region& clip, 361 bool useIdentityTransform) const = 0; 362 363public: 364 virtual void setDefaultBufferSize(uint32_t /*w*/, uint32_t /*h*/) {} 365 366 void setGeometry(const sp<const DisplayDevice>& displayDevice, uint32_t z); 367 void forceClientComposition(int32_t hwcId); 368 bool getForceClientComposition(int32_t hwcId); 369 virtual void setPerFrameData(const sp<const DisplayDevice>& displayDevice) = 0; 370 371 // callIntoHwc exists so we can update our local state and call 372 // acceptDisplayChanges without unnecessarily updating the device's state 373 void setCompositionType(int32_t hwcId, HWC2::Composition type, bool callIntoHwc = true); 374 HWC2::Composition getCompositionType(int32_t hwcId) const; 375 void setClearClientTarget(int32_t hwcId, bool clear); 376 bool getClearClientTarget(int32_t hwcId) const; 377 void updateCursorPosition(const sp<const DisplayDevice>& hw); 378 379 /* 380 * called after page-flip 381 */ 382 virtual void onLayerDisplayed(const sp<Fence>& releaseFence); 383 384 virtual void abandon() {} 385 386 virtual bool shouldPresentNow(const DispSync& /*dispSync*/) const { return false; } 387 virtual void setTransformHint(uint32_t /*orientation*/) const { } 388 389 /* 390 * called before composition. 391 * returns true if the layer has pending updates. 392 */ 393 virtual bool onPreComposition(nsecs_t /*refreshStartTime*/) { return true; } 394 395 /* 396 * called after composition. 397 * returns true if the layer latched a new buffer this frame. 398 */ 399 virtual bool onPostComposition(const std::shared_ptr<FenceTime>& /*glDoneFence*/, 400 const std::shared_ptr<FenceTime>& /*presentFence*/, 401 const CompositorTiming& /*compositorTiming*/) { 402 return false; 403 } 404 405 // If a buffer was replaced this frame, release the former buffer 406 virtual void releasePendingBuffer(nsecs_t /*dequeueReadyTime*/) { } 407 408 409 /* 410 * draw - performs some global clipping optimizations 411 * and calls onDraw(). 412 */ 413 void draw(const RenderArea& renderArea, const Region& clip) const; 414 void draw(const RenderArea& renderArea, bool useIdentityTransform) const; 415 void draw(const RenderArea& renderArea) const; 416 417 /* 418 * doTransaction - process the transaction. This is a good place to figure 419 * out which attributes of the surface have changed. 420 */ 421 uint32_t doTransaction(uint32_t transactionFlags); 422 423 /* 424 * setVisibleRegion - called to set the new visible region. This gives 425 * a chance to update the new visible region or record the fact it changed. 426 */ 427 void setVisibleRegion(const Region& visibleRegion); 428 429 /* 430 * setCoveredRegion - called when the covered region changes. The covered 431 * region corresponds to any area of the surface that is covered 432 * (transparently or not) by another surface. 433 */ 434 void setCoveredRegion(const Region& coveredRegion); 435 436 /* 437 * setVisibleNonTransparentRegion - called when the visible and 438 * non-transparent region changes. 439 */ 440 void setVisibleNonTransparentRegion(const Region& visibleNonTransparentRegion); 441 442 /* 443 * Clear the visible, covered, and non-transparent regions. 444 */ 445 void clearVisibilityRegions(); 446 447 /* 448 * latchBuffer - called each time the screen is redrawn and returns whether 449 * the visible regions need to be recomputed (this is a fairly heavy 450 * operation, so this should be set only if needed). Typically this is used 451 * to figure out if the content or size of a surface has changed. 452 */ 453 virtual Region latchBuffer(bool& /*recomputeVisibleRegions*/, nsecs_t /*latchTime*/) { 454 return {}; 455 } 456 457 virtual bool isBufferLatched() const { return false; } 458 459 bool isPotentialCursor() const { return mPotentialCursor; } 460 /* 461 * called with the state lock from a binder thread when the layer is 462 * removed from the current list to the pending removal list 463 */ 464 void onRemovedFromCurrentState(); 465 466 /* 467 * called with the state lock from the main thread when the layer is 468 * removed from the pending removal list 469 */ 470 void onRemoved(); 471 472 // Updates the transform hint in our SurfaceFlingerConsumer to match 473 // the current orientation of the display device. 474 void updateTransformHint(const sp<const DisplayDevice>& hw) const; 475 476 /* 477 * returns the rectangle that crops the content of the layer and scales it 478 * to the layer's size. 479 */ 480 Rect getContentCrop() const; 481 482 /* 483 * Returns if a frame is queued. 484 */ 485 bool hasQueuedFrame() const { 486 return mQueuedFrames > 0 || mSidebandStreamChanged || mAutoRefresh; 487 } 488 489 int32_t getQueuedFrameCount() const { return mQueuedFrames; } 490 491 // ----------------------------------------------------------------------- 492 493 bool createHwcLayer(HWComposer* hwc, int32_t hwcId); 494 bool destroyHwcLayer(int32_t hwcId); 495 void destroyAllHwcLayers(); 496 497 bool hasHwcLayer(int32_t hwcId) { 498 return getBE().mHwcLayers.count(hwcId) > 0; 499 } 500 501 HWC2::Layer* getHwcLayer(int32_t hwcId) { 502 if (getBE().mHwcLayers.count(hwcId) == 0) { 503 return nullptr; 504 } 505 return getBE().mHwcLayers[hwcId].layer; 506 } 507 508 // ----------------------------------------------------------------------- 509 510 void clearWithOpenGL(const RenderArea& renderArea) const; 511 void setFiltering(bool filtering); 512 bool getFiltering() const; 513 514 515 inline const State& getDrawingState() const { return mDrawingState; } 516 inline const State& getCurrentState() const { return mCurrentState; } 517 inline State& getCurrentState() { return mCurrentState; } 518 519 LayerDebugInfo getLayerDebugInfo() const; 520 521 /* always call base class first */ 522 static void miniDumpHeader(String8& result); 523 void miniDump(String8& result, int32_t hwcId) const; 524 void dumpFrameStats(String8& result) const; 525 void dumpFrameEvents(String8& result); 526 void clearFrameStats(); 527 void logFrameStats(); 528 void getFrameStats(FrameStats* outStats) const; 529 530 virtual std::vector<OccupancyTracker::Segment> getOccupancyHistory(bool /*forceFlush*/) { 531 return {}; 532 } 533 534 void onDisconnect(); 535 void addAndGetFrameTimestamps(const NewFrameEventsEntry* newEntry, 536 FrameEventHistoryDelta* outDelta); 537 538 virtual bool getTransformToDisplayInverse() const { return false; } 539 540 Transform getTransform() const; 541 542 // Returns the Alpha of the Surface, accounting for the Alpha 543 // of parent Surfaces in the hierarchy (alpha's will be multiplied 544 // down the hierarchy). 545 half getAlpha() const; 546 half4 getColor() const; 547 548 void traverseInReverseZOrder(LayerVector::StateSet stateSet, 549 const LayerVector::Visitor& visitor); 550 void traverseInZOrder(LayerVector::StateSet stateSet, const LayerVector::Visitor& visitor); 551 552 void traverseChildrenInZOrder(LayerVector::StateSet stateSet, 553 const LayerVector::Visitor& visitor); 554 555 size_t getChildrenCount() const; 556 void addChild(const sp<Layer>& layer); 557 // Returns index if removed, or negative value otherwise 558 // for symmetry with Vector::remove 559 ssize_t removeChild(const sp<Layer>& layer); 560 sp<Layer> getParent() const { return mCurrentParent.promote(); } 561 bool hasParent() const { return getParent() != nullptr; } 562 Rect computeScreenBounds(bool reduceTransparentRegion = true) const; 563 bool setChildLayer(const sp<Layer>& childLayer, int32_t z); 564 bool setChildRelativeLayer(const sp<Layer>& childLayer, 565 const sp<IBinder>& relativeToHandle, int32_t relativeZ); 566 567 // Copy the current list of children to the drawing state. Called by 568 // SurfaceFlinger to complete a transaction. 569 void commitChildList(); 570 int32_t getZ() const; 571 572protected: 573 // constant 574 sp<SurfaceFlinger> mFlinger; 575 /* 576 * Trivial class, used to ensure that mFlinger->onLayerDestroyed(mLayer) 577 * is called. 578 */ 579 class LayerCleaner { 580 sp<SurfaceFlinger> mFlinger; 581 wp<Layer> mLayer; 582 583 protected: 584 ~LayerCleaner() { 585 // destroy client resources 586 mFlinger->onLayerDestroyed(mLayer); 587 } 588 589 public: 590 LayerCleaner(const sp<SurfaceFlinger>& flinger, const sp<Layer>& layer) 591 : mFlinger(flinger), mLayer(layer) {} 592 }; 593 594 virtual void onFirstRef(); 595 596 friend class SurfaceInterceptor; 597 598 void commitTransaction(const State& stateToCommit); 599 600 uint32_t getEffectiveUsage(uint32_t usage) const; 601 602 FloatRect computeCrop(const sp<const DisplayDevice>& hw) const; 603 // Compute the initial crop as specified by parent layers and the 604 // SurfaceControl for this layer. Does not include buffer crop from the 605 // IGraphicBufferProducer client, as that should not affect child clipping. 606 // Returns in screen space. 607 Rect computeInitialCrop(const sp<const DisplayDevice>& hw) const; 608 609 // drawing 610 void clearWithOpenGL(const RenderArea& renderArea, float r, float g, float b, 611 float alpha) const; 612 613 void setParent(const sp<Layer>& layer); 614 615 LayerVector makeTraversalList(LayerVector::StateSet stateSet, bool* outSkipRelativeZUsers); 616 void addZOrderRelative(const wp<Layer>& relative); 617 void removeZOrderRelative(const wp<Layer>& relative); 618 619 class SyncPoint { 620 public: 621 explicit SyncPoint(uint64_t frameNumber) 622 : mFrameNumber(frameNumber), mFrameIsAvailable(false), mTransactionIsApplied(false) {} 623 624 uint64_t getFrameNumber() const { return mFrameNumber; } 625 626 bool frameIsAvailable() const { return mFrameIsAvailable; } 627 628 void setFrameAvailable() { mFrameIsAvailable = true; } 629 630 bool transactionIsApplied() const { return mTransactionIsApplied; } 631 632 void setTransactionApplied() { mTransactionIsApplied = true; } 633 634 private: 635 const uint64_t mFrameNumber; 636 std::atomic<bool> mFrameIsAvailable; 637 std::atomic<bool> mTransactionIsApplied; 638 }; 639 640 // SyncPoints which will be signaled when the correct frame is at the head 641 // of the queue and dropped after the frame has been latched. Protected by 642 // mLocalSyncPointMutex. 643 Mutex mLocalSyncPointMutex; 644 std::list<std::shared_ptr<SyncPoint>> mLocalSyncPoints; 645 646 // SyncPoints which will be signaled and then dropped when the transaction 647 // is applied 648 std::list<std::shared_ptr<SyncPoint>> mRemoteSyncPoints; 649 650 // Returns false if the relevant frame has already been latched 651 bool addSyncPoint(const std::shared_ptr<SyncPoint>& point); 652 653 void pushPendingState(); 654 void popPendingState(State* stateToCommit); 655 bool applyPendingStates(State* stateToCommit); 656 657 void clearSyncPoints(); 658 659 // Returns mCurrentScaling mode (originating from the 660 // Client) or mOverrideScalingMode mode (originating from 661 // the Surface Controller) if set. 662 virtual uint32_t getEffectiveScalingMode() const { return 0; } 663 664public: 665 /* 666 * The layer handle is just a BBinder object passed to the client 667 * (remote process) -- we don't keep any reference on our side such that 668 * the dtor is called when the remote side let go of its reference. 669 * 670 * LayerCleaner ensures that mFlinger->onLayerDestroyed() is called for 671 * this layer when the handle is destroyed. 672 */ 673 class Handle : public BBinder, public LayerCleaner { 674 public: 675 Handle(const sp<SurfaceFlinger>& flinger, const sp<Layer>& layer) 676 : LayerCleaner(flinger, layer), owner(layer) {} 677 678 wp<Layer> owner; 679 }; 680 681 sp<IBinder> getHandle(); 682 const String8& getName() const; 683 virtual void notifyAvailableFrames() {} 684 virtual PixelFormat getPixelFormat() const { return PIXEL_FORMAT_NONE; } 685 bool getPremultipledAlpha() const; 686 687protected: 688 // ----------------------------------------------------------------------- 689 bool usingRelativeZ(LayerVector::StateSet stateSet); 690 691 bool mPremultipliedAlpha; 692 String8 mName; 693 String8 mTransactionName; // A cached version of "TX - " + mName for systraces 694 695 bool mPrimaryDisplayOnly = false; 696 697 // these are protected by an external lock 698 State mCurrentState; 699 State mDrawingState; 700 volatile int32_t mTransactionFlags; 701 702 // Accessed from main thread and binder threads 703 Mutex mPendingStateMutex; 704 Vector<State> mPendingStates; 705 706 // thread-safe 707 volatile int32_t mQueuedFrames; 708 volatile int32_t mSidebandStreamChanged; // used like an atomic boolean 709 710 // Timestamp history for UIAutomation. Thread safe. 711 FrameTracker mFrameTracker; 712 713 // Timestamp history for the consumer to query. 714 // Accessed by both consumer and producer on main and binder threads. 715 Mutex mFrameEventHistoryMutex; 716 ConsumerFrameEventHistory mFrameEventHistory; 717 FenceTimeline mAcquireTimeline; 718 FenceTimeline mReleaseTimeline; 719 720 // main thread 721 int mActiveBufferSlot; 722 sp<GraphicBuffer> mActiveBuffer; 723 sp<NativeHandle> mSidebandStream; 724 Rect mCurrentCrop; 725 uint32_t mCurrentTransform; 726 // We encode unset as -1. 727 int32_t mOverrideScalingMode; 728 bool mCurrentOpacity; 729 std::atomic<uint64_t> mCurrentFrameNumber; 730 bool mFrameLatencyNeeded; 731 // Whether filtering is forced on or not 732 bool mFiltering; 733 // Whether filtering is needed b/c of the drawingstate 734 bool mNeedsFiltering; 735 736 bool mPendingRemoval = false; 737 738 // page-flip thread (currently main thread) 739 bool mProtectedByApp; // application requires protected path to external sink 740 741 // protected by mLock 742 mutable Mutex mLock; 743 744 const wp<Client> mClientRef; 745 746 // This layer can be a cursor on some displays. 747 bool mPotentialCursor; 748 749 // Local copy of the queued contents of the incoming BufferQueue 750 mutable Mutex mQueueItemLock; 751 Condition mQueueItemCondition; 752 Vector<BufferItem> mQueueItems; 753 std::atomic<uint64_t> mLastFrameNumberReceived; 754 bool mAutoRefresh; 755 bool mFreezeGeometryUpdates; 756 757 // Child list about to be committed/used for editing. 758 LayerVector mCurrentChildren; 759 // Child list used for rendering. 760 LayerVector mDrawingChildren; 761 762 wp<Layer> mCurrentParent; 763 wp<Layer> mDrawingParent; 764 765 mutable LayerBE mBE; 766}; 767 768// --------------------------------------------------------------------------- 769 770}; // namespace android 771 772#endif // ANDROID_LAYER_H 773