1 /* 2 * Copyright 2015 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_SF_HWC2_ON_1_ADAPTER_H 18 #define ANDROID_SF_HWC2_ON_1_ADAPTER_H 19 20 #define HWC2_INCLUDE_STRINGIFICATION 21 #define HWC2_USE_CPP11 22 #include <hardware/hwcomposer2.h> 23 #undef HWC2_INCLUDE_STRINGIFICATION 24 #undef HWC2_USE_CPP11 25 26 #include "MiniFence.h" 27 28 #include <atomic> 29 #include <map> 30 #include <mutex> 31 #include <queue> 32 #include <set> 33 #include <unordered_map> 34 #include <unordered_set> 35 #include <vector> 36 37 struct hwc_composer_device_1; 38 struct hwc_display_contents_1; 39 struct hwc_layer_1; 40 41 namespace android { 42 43 // For devices unable to provide an implementation of HWC2 (see hwcomposer2.h), 44 // we provide an adapter able to talk to HWC1 (see hwcomposer.h). It translates 45 // streamed function calls ala HWC2 model to batched array of structs calls ala 46 // HWC1 model. 47 class HWC2On1Adapter : public hwc2_device_t 48 { 49 public: 50 explicit HWC2On1Adapter(struct hwc_composer_device_1* hwc1Device); 51 ~HWC2On1Adapter(); 52 53 struct hwc_composer_device_1* getHwc1Device() const { return mHwc1Device; } 54 uint8_t getHwc1MinorVersion() const { return mHwc1MinorVersion; } 55 56 private: 57 static inline HWC2On1Adapter* getAdapter(hwc2_device_t* device) { 58 return static_cast<HWC2On1Adapter*>(device); 59 } 60 61 // getCapabilities 62 63 void doGetCapabilities(uint32_t* outCount, 64 int32_t* /*hwc2_capability_t*/ outCapabilities); 65 static void getCapabilitiesHook(hwc2_device_t* device, uint32_t* outCount, 66 int32_t* /*hwc2_capability_t*/ outCapabilities) { 67 getAdapter(device)->doGetCapabilities(outCount, outCapabilities); 68 } 69 70 bool supportsBackgroundColor() { 71 return mHwc1SupportsBackgroundColor; 72 } 73 74 // getFunction 75 76 hwc2_function_pointer_t doGetFunction(HWC2::FunctionDescriptor descriptor); 77 static hwc2_function_pointer_t getFunctionHook(hwc2_device_t* device, 78 int32_t intDesc) { 79 auto descriptor = static_cast<HWC2::FunctionDescriptor>(intDesc); 80 return getAdapter(device)->doGetFunction(descriptor); 81 } 82 83 // Device functions 84 85 HWC2::Error createVirtualDisplay(uint32_t width, uint32_t height, 86 hwc2_display_t* outDisplay); 87 static int32_t createVirtualDisplayHook(hwc2_device_t* device, 88 uint32_t width, uint32_t height, int32_t* /*format*/, 89 hwc2_display_t* outDisplay) { 90 // HWC1 implementations cannot override the buffer format requested by 91 // the consumer 92 auto error = getAdapter(device)->createVirtualDisplay(width, height, 93 outDisplay); 94 return static_cast<int32_t>(error); 95 } 96 97 HWC2::Error destroyVirtualDisplay(hwc2_display_t display); 98 static int32_t destroyVirtualDisplayHook(hwc2_device_t* device, 99 hwc2_display_t display) { 100 auto error = getAdapter(device)->destroyVirtualDisplay(display); 101 return static_cast<int32_t>(error); 102 } 103 104 std::string mDumpString; 105 void dump(uint32_t* outSize, char* outBuffer); 106 static void dumpHook(hwc2_device_t* device, uint32_t* outSize, 107 char* outBuffer) { 108 getAdapter(device)->dump(outSize, outBuffer); 109 } 110 111 uint32_t getMaxVirtualDisplayCount(); 112 static uint32_t getMaxVirtualDisplayCountHook(hwc2_device_t* device) { 113 return getAdapter(device)->getMaxVirtualDisplayCount(); 114 } 115 116 HWC2::Error registerCallback(HWC2::Callback descriptor, 117 hwc2_callback_data_t callbackData, hwc2_function_pointer_t pointer); 118 static int32_t registerCallbackHook(hwc2_device_t* device, 119 int32_t intDesc, hwc2_callback_data_t callbackData, 120 hwc2_function_pointer_t pointer) { 121 auto descriptor = static_cast<HWC2::Callback>(intDesc); 122 auto error = getAdapter(device)->registerCallback(descriptor, 123 callbackData, pointer); 124 return static_cast<int32_t>(error); 125 } 126 127 // Display functions 128 129 class Layer; 130 131 class SortLayersByZ { 132 public: 133 bool operator()(const std::shared_ptr<Layer>& lhs, 134 const std::shared_ptr<Layer>& rhs); 135 }; 136 137 // The semantics of the fences returned by the device differ between 138 // hwc1.set() and hwc2.present(). Read hwcomposer.h and hwcomposer2.h 139 // for more information. 140 // 141 // Release fences in hwc1 are obtained on set() for a frame n and signaled 142 // when the layer buffer is not needed for read operations anymore 143 // (typically on frame n+1). In HWC2, release fences are obtained with a 144 // special call after present() for frame n. These fences signal 145 // on frame n: More specifically, the fence for a given buffer provided in 146 // frame n will signal when the prior buffer is no longer required. 147 // 148 // A retire fence (HWC1) is signaled when a composition is replaced 149 // on the panel whereas a present fence (HWC2) is signaled when a 150 // composition starts to be displayed on a panel. 151 // 152 // The HWC2to1Adapter emulates the new fence semantics for a frame 153 // n by returning the fence from frame n-1. For frame 0, the adapter 154 // returns NO_FENCE. 155 class DeferredFence { 156 public: 157 DeferredFence() 158 : mFences({MiniFence::NO_FENCE, MiniFence::NO_FENCE}) {} 159 160 void add(int32_t fenceFd) { 161 mFences.emplace(new MiniFence(fenceFd)); 162 mFences.pop(); 163 } 164 165 const sp<MiniFence>& get() const { 166 return mFences.front(); 167 } 168 169 private: 170 // There are always two fences in this queue. 171 std::queue<sp<MiniFence>> mFences; 172 }; 173 174 class FencedBuffer { 175 public: 176 FencedBuffer() : mBuffer(nullptr), mFence(MiniFence::NO_FENCE) {} 177 178 void setBuffer(buffer_handle_t buffer) { mBuffer = buffer; } 179 void setFence(int fenceFd) { mFence = new MiniFence(fenceFd); } 180 181 buffer_handle_t getBuffer() const { return mBuffer; } 182 int getFence() const { return mFence->dup(); } 183 184 private: 185 buffer_handle_t mBuffer; 186 sp<MiniFence> mFence; 187 }; 188 189 class Display { 190 public: 191 Display(HWC2On1Adapter& device, HWC2::DisplayType type); 192 193 hwc2_display_t getId() const { return mId; } 194 HWC2On1Adapter& getDevice() const { return mDevice; } 195 196 // Does not require locking because it is set before adding the 197 // Displays to the Adapter's list of displays 198 void setHwc1Id(int32_t id) { mHwc1Id = id; } 199 int32_t getHwc1Id() const { return mHwc1Id; } 200 201 // HWC2 Display functions 202 HWC2::Error acceptChanges(); 203 HWC2::Error createLayer(hwc2_layer_t* outLayerId); 204 HWC2::Error destroyLayer(hwc2_layer_t layerId); 205 HWC2::Error getActiveConfig(hwc2_config_t* outConfigId); 206 HWC2::Error getAttribute(hwc2_config_t configId, 207 HWC2::Attribute attribute, int32_t* outValue); 208 HWC2::Error getChangedCompositionTypes(uint32_t* outNumElements, 209 hwc2_layer_t* outLayers, int32_t* outTypes); 210 HWC2::Error getColorModes(uint32_t* outNumModes, int32_t* outModes); 211 HWC2::Error getConfigs(uint32_t* outNumConfigs, 212 hwc2_config_t* outConfigIds); 213 HWC2::Error getDozeSupport(int32_t* outSupport); 214 HWC2::Error getHdrCapabilities(uint32_t* outNumTypes, 215 int32_t* outTypes, float* outMaxLuminance, 216 float* outMaxAverageLuminance, float* outMinLuminance); 217 HWC2::Error getName(uint32_t* outSize, char* outName); 218 HWC2::Error getReleaseFences(uint32_t* outNumElements, 219 hwc2_layer_t* outLayers, int32_t* outFences); 220 HWC2::Error getRequests(int32_t* outDisplayRequests, 221 uint32_t* outNumElements, hwc2_layer_t* outLayers, 222 int32_t* outLayerRequests); 223 HWC2::Error getType(int32_t* outType); 224 225 // Since HWC1 "presents" (called "set" in HWC1) all Displays 226 // at once, the first call to any Display::present will trigger 227 // present() on all Displays in the Device. Subsequent calls without 228 // first calling validate() are noop (except for duping/returning 229 // the retire fence). 230 HWC2::Error present(int32_t* outRetireFence); 231 232 HWC2::Error setActiveConfig(hwc2_config_t configId); 233 HWC2::Error setClientTarget(buffer_handle_t target, 234 int32_t acquireFence, int32_t dataspace, 235 hwc_region_t damage); 236 HWC2::Error setColorMode(android_color_mode_t mode); 237 HWC2::Error setColorTransform(android_color_transform_t hint); 238 HWC2::Error setOutputBuffer(buffer_handle_t buffer, 239 int32_t releaseFence); 240 HWC2::Error setPowerMode(HWC2::PowerMode mode); 241 HWC2::Error setVsyncEnabled(HWC2::Vsync enabled); 242 243 // Since HWC1 "validates" (called "prepare" in HWC1) all Displays 244 // at once, the first call to any Display::validate() will trigger 245 // validate() on all other Displays in the Device. 246 HWC2::Error validate(uint32_t* outNumTypes, 247 uint32_t* outNumRequests); 248 249 HWC2::Error updateLayerZ(hwc2_layer_t layerId, uint32_t z); 250 251 HWC2::Error getClientTargetSupport(uint32_t width, uint32_t height, 252 int32_t format, int32_t dataspace); 253 254 // Read configs from HWC1 device 255 void populateConfigs(); 256 257 // Set configs for a virtual display 258 void populateConfigs(uint32_t width, uint32_t height); 259 260 bool prepare(); 261 262 // Called after hwc.prepare() with responses from the device. 263 void generateChanges(); 264 265 bool hasChanges() const; 266 HWC2::Error set(hwc_display_contents_1& hwcContents); 267 void addRetireFence(int fenceFd); 268 void addReleaseFences(const hwc_display_contents_1& hwcContents); 269 270 bool hasColorTransform() const; 271 272 std::string dump() const; 273 274 // Return a rect from the pool allocated during validate() 275 hwc_rect_t* GetRects(size_t numRects); 276 277 hwc_display_contents_1* getDisplayContents(); 278 279 void markGeometryChanged() { mGeometryChanged = true; } 280 void resetGeometryMarker() { mGeometryChanged = false;} 281 private: 282 class Config { 283 public: 284 Config(Display& display) 285 : mDisplay(display), 286 mId(0), 287 mAttributes() {} 288 289 bool isOnDisplay(const Display& display) const { 290 return display.getId() == mDisplay.getId(); 291 } 292 293 void setAttribute(HWC2::Attribute attribute, int32_t value); 294 int32_t getAttribute(HWC2::Attribute attribute) const; 295 296 void setHwc1Id(uint32_t id); 297 bool hasHwc1Id(uint32_t id) const; 298 HWC2::Error getColorModeForHwc1Id(uint32_t id, 299 android_color_mode_t *outMode) const; 300 HWC2::Error getHwc1IdForColorMode(android_color_mode_t mode, 301 uint32_t* outId) const; 302 303 void setId(hwc2_config_t id) { mId = id; } 304 hwc2_config_t getId() const { return mId; } 305 306 // Attempts to merge two configs that differ only in color 307 // mode. Returns whether the merge was successful 308 bool merge(const Config& other); 309 310 std::set<android_color_mode_t> getColorModes() const; 311 312 // splitLine divides the output into two lines suitable for 313 // dumpsys SurfaceFlinger 314 std::string toString(bool splitLine = false) const; 315 316 private: 317 Display& mDisplay; 318 hwc2_config_t mId; 319 std::unordered_map<HWC2::Attribute, int32_t> mAttributes; 320 321 // Maps from color transform to HWC1 config ID 322 std::unordered_map<android_color_mode_t, uint32_t> mHwc1Ids; 323 }; 324 325 // Stores changes requested from the device upon calling prepare(). 326 // Handles change request to: 327 // - Layer composition type. 328 // - Layer hints. 329 class Changes { 330 public: 331 uint32_t getNumTypes() const { 332 return static_cast<uint32_t>(mTypeChanges.size()); 333 } 334 335 uint32_t getNumLayerRequests() const { 336 return static_cast<uint32_t>(mLayerRequests.size()); 337 } 338 339 const std::unordered_map<hwc2_layer_t, HWC2::Composition>& 340 getTypeChanges() const { 341 return mTypeChanges; 342 } 343 344 const std::unordered_map<hwc2_layer_t, HWC2::LayerRequest>& 345 getLayerRequests() const { 346 return mLayerRequests; 347 } 348 349 void addTypeChange(hwc2_layer_t layerId, 350 HWC2::Composition type) { 351 mTypeChanges.insert({layerId, type}); 352 } 353 354 void clearTypeChanges() { mTypeChanges.clear(); } 355 356 void addLayerRequest(hwc2_layer_t layerId, 357 HWC2::LayerRequest request) { 358 mLayerRequests.insert({layerId, request}); 359 } 360 361 private: 362 std::unordered_map<hwc2_layer_t, HWC2::Composition> 363 mTypeChanges; 364 std::unordered_map<hwc2_layer_t, HWC2::LayerRequest> 365 mLayerRequests; 366 }; 367 368 std::shared_ptr<const Config> 369 getConfig(hwc2_config_t configId) const; 370 371 void populateColorModes(); 372 void initializeActiveConfig(); 373 374 // Creates a bi-directional mapping between index in HWC1 375 // prepare/set array and Layer object. Stores mapping in 376 // mHwc1LayerMap and also updates Layer's attribute mHwc1Id. 377 void assignHwc1LayerIds(); 378 379 // Called after a response to prepare() has been received: 380 // Ingest composition type changes requested by the device. 381 void updateTypeChanges(const struct hwc_layer_1& hwc1Layer, 382 const Layer& layer); 383 384 // Called after a response to prepare() has been received: 385 // Ingest layer hint changes requested by the device. 386 void updateLayerRequests(const struct hwc_layer_1& hwc1Layer, 387 const Layer& layer); 388 389 // Set all fields in HWC1 comm array for layer containing the 390 // HWC_FRAMEBUFFER_TARGET (always the last layer). 391 void prepareFramebufferTarget(); 392 393 // Display ID generator. 394 static std::atomic<hwc2_display_t> sNextId; 395 const hwc2_display_t mId; 396 397 398 HWC2On1Adapter& mDevice; 399 400 // The state of this display should only be modified from 401 // SurfaceFlinger's main loop, with the exception of when dump is 402 // called. To prevent a bad state from crashing us during a dump 403 // call, all public calls into Display must acquire this mutex. 404 // 405 // It is recursive because we don't want to deadlock in validate 406 // (or present) when we call HWC2On1Adapter::prepareAllDisplays 407 // (or setAllDisplays), which calls back into Display functions 408 // which require locking. 409 mutable std::recursive_mutex mStateMutex; 410 411 // Allocate RAM able to store all layers and rects used for 412 // communication with HWC1. Place allocated RAM in variable 413 // mHwc1RequestedContents. 414 void allocateRequestedContents(); 415 416 // Array of structs exchanged between client and hwc1 device. 417 // Sent to device upon calling prepare(). 418 std::unique_ptr<hwc_display_contents_1> mHwc1RequestedContents; 419 private: 420 DeferredFence mRetireFence; 421 422 // Will only be non-null after the Display has been validated and 423 // before it has been presented 424 std::unique_ptr<Changes> mChanges; 425 426 int32_t mHwc1Id; 427 428 std::vector<std::shared_ptr<Config>> mConfigs; 429 std::shared_ptr<const Config> mActiveConfig; 430 std::set<android_color_mode_t> mColorModes; 431 android_color_mode_t mActiveColorMode; 432 std::string mName; 433 HWC2::DisplayType mType; 434 HWC2::PowerMode mPowerMode; 435 HWC2::Vsync mVsyncEnabled; 436 437 // Used to populate HWC1 HWC_FRAMEBUFFER_TARGET layer 438 FencedBuffer mClientTarget; 439 440 441 FencedBuffer mOutputBuffer; 442 443 bool mHasColorTransform; 444 445 // All layers this Display is aware of. 446 std::multiset<std::shared_ptr<Layer>, SortLayersByZ> mLayers; 447 448 // Mapping between layer index in array of hwc_display_contents_1* 449 // passed to HWC1 during validate/set and Layer object. 450 std::unordered_map<size_t, std::shared_ptr<Layer>> mHwc1LayerMap; 451 452 // All communication with HWC1 via prepare/set is done with one 453 // alloc. This pointer is pointing to a pool of hwc_rect_t. 454 size_t mNumAvailableRects; 455 hwc_rect_t* mNextAvailableRect; 456 457 // True if any of the Layers contained in this Display have been 458 // updated with anything other than a buffer since last call to 459 // Display::set() 460 bool mGeometryChanged; 461 }; 462 463 // Utility template calling a Display object method directly based on the 464 // hwc2_display_t displayId parameter. 465 template <typename ...Args> 466 static int32_t callDisplayFunction(hwc2_device_t* device, 467 hwc2_display_t displayId, HWC2::Error (Display::*member)(Args...), 468 Args... args) { 469 auto display = getAdapter(device)->getDisplay(displayId); 470 if (!display) { 471 return static_cast<int32_t>(HWC2::Error::BadDisplay); 472 } 473 auto error = ((*display).*member)(std::forward<Args>(args)...); 474 return static_cast<int32_t>(error); 475 } 476 477 template <typename MF, MF memFunc, typename ...Args> 478 static int32_t displayHook(hwc2_device_t* device, hwc2_display_t displayId, 479 Args... args) { 480 return HWC2On1Adapter::callDisplayFunction(device, displayId, memFunc, 481 std::forward<Args>(args)...); 482 } 483 484 static int32_t getDisplayAttributeHook(hwc2_device_t* device, 485 hwc2_display_t display, hwc2_config_t config, 486 int32_t intAttribute, int32_t* outValue) { 487 auto attribute = static_cast<HWC2::Attribute>(intAttribute); 488 return callDisplayFunction(device, display, &Display::getAttribute, 489 config, attribute, outValue); 490 } 491 492 static int32_t setColorTransformHook(hwc2_device_t* device, 493 hwc2_display_t display, const float* /*matrix*/, 494 int32_t /*android_color_transform_t*/ intHint) { 495 // We intentionally throw away the matrix, because if the hint is 496 // anything other than IDENTITY, we have to fall back to client 497 // composition anyway 498 auto hint = static_cast<android_color_transform_t>(intHint); 499 return callDisplayFunction(device, display, &Display::setColorTransform, 500 hint); 501 } 502 503 static int32_t setColorModeHook(hwc2_device_t* device, 504 hwc2_display_t display, int32_t /*android_color_mode_t*/ intMode) { 505 auto mode = static_cast<android_color_mode_t>(intMode); 506 return callDisplayFunction(device, display, &Display::setColorMode, 507 mode); 508 } 509 510 static int32_t setPowerModeHook(hwc2_device_t* device, 511 hwc2_display_t display, int32_t intMode) { 512 auto mode = static_cast<HWC2::PowerMode>(intMode); 513 return callDisplayFunction(device, display, &Display::setPowerMode, 514 mode); 515 } 516 517 static int32_t setVsyncEnabledHook(hwc2_device_t* device, 518 hwc2_display_t display, int32_t intEnabled) { 519 auto enabled = static_cast<HWC2::Vsync>(intEnabled); 520 return callDisplayFunction(device, display, &Display::setVsyncEnabled, 521 enabled); 522 } 523 524 class Layer { 525 public: 526 explicit Layer(Display& display); 527 528 bool operator==(const Layer& other) { return mId == other.mId; } 529 bool operator!=(const Layer& other) { return !(*this == other); } 530 531 hwc2_layer_t getId() const { return mId; } 532 Display& getDisplay() const { return mDisplay; } 533 534 // HWC2 Layer functions 535 HWC2::Error setBuffer(buffer_handle_t buffer, int32_t acquireFence); 536 HWC2::Error setCursorPosition(int32_t x, int32_t y); 537 HWC2::Error setSurfaceDamage(hwc_region_t damage); 538 539 // HWC2 Layer state functions 540 HWC2::Error setBlendMode(HWC2::BlendMode mode); 541 HWC2::Error setColor(hwc_color_t color); 542 HWC2::Error setCompositionType(HWC2::Composition type); 543 HWC2::Error setDataspace(android_dataspace_t dataspace); 544 HWC2::Error setDisplayFrame(hwc_rect_t frame); 545 HWC2::Error setPlaneAlpha(float alpha); 546 HWC2::Error setSidebandStream(const native_handle_t* stream); 547 HWC2::Error setSourceCrop(hwc_frect_t crop); 548 HWC2::Error setTransform(HWC2::Transform transform); 549 HWC2::Error setVisibleRegion(hwc_region_t visible); 550 HWC2::Error setZ(uint32_t z); 551 552 HWC2::Composition getCompositionType() const { 553 return mCompositionType; 554 } 555 uint32_t getZ() const { return mZ; } 556 557 void addReleaseFence(int fenceFd); 558 const sp<MiniFence>& getReleaseFence() const; 559 560 void setHwc1Id(size_t id) { mHwc1Id = id; } 561 size_t getHwc1Id() const { return mHwc1Id; } 562 563 // Write state to HWC1 communication struct. 564 void applyState(struct hwc_layer_1& hwc1Layer); 565 566 std::string dump() const; 567 568 std::size_t getNumVisibleRegions() { return mVisibleRegion.size(); } 569 570 std::size_t getNumSurfaceDamages() { return mSurfaceDamage.size(); } 571 572 // True if a layer cannot be properly rendered by the device due 573 // to usage of SolidColor (a.k.a BackgroundColor in HWC1). 574 bool hasUnsupportedBackgroundColor() { 575 return (mCompositionType == HWC2::Composition::SolidColor && 576 !mDisplay.getDevice().supportsBackgroundColor()); 577 } 578 private: 579 void applyCommonState(struct hwc_layer_1& hwc1Layer); 580 void applySolidColorState(struct hwc_layer_1& hwc1Layer); 581 void applySidebandState(struct hwc_layer_1& hwc1Layer); 582 void applyBufferState(struct hwc_layer_1& hwc1Layer); 583 void applyCompositionType(struct hwc_layer_1& hwc1Layer); 584 585 static std::atomic<hwc2_layer_t> sNextId; 586 const hwc2_layer_t mId; 587 Display& mDisplay; 588 589 FencedBuffer mBuffer; 590 std::vector<hwc_rect_t> mSurfaceDamage; 591 592 HWC2::BlendMode mBlendMode; 593 hwc_color_t mColor; 594 HWC2::Composition mCompositionType; 595 hwc_rect_t mDisplayFrame; 596 float mPlaneAlpha; 597 const native_handle_t* mSidebandStream; 598 hwc_frect_t mSourceCrop; 599 HWC2::Transform mTransform; 600 std::vector<hwc_rect_t> mVisibleRegion; 601 602 uint32_t mZ; 603 604 DeferredFence mReleaseFence; 605 606 size_t mHwc1Id; 607 bool mHasUnsupportedPlaneAlpha; 608 }; 609 610 // Utility tempate calling a Layer object method based on ID parameters: 611 // hwc2_display_t displayId 612 // and 613 // hwc2_layer_t layerId 614 template <typename ...Args> 615 static int32_t callLayerFunction(hwc2_device_t* device, 616 hwc2_display_t displayId, hwc2_layer_t layerId, 617 HWC2::Error (Layer::*member)(Args...), Args... args) { 618 auto result = getAdapter(device)->getLayer(displayId, layerId); 619 auto error = std::get<HWC2::Error>(result); 620 if (error == HWC2::Error::None) { 621 auto layer = std::get<Layer*>(result); 622 error = ((*layer).*member)(std::forward<Args>(args)...); 623 } 624 return static_cast<int32_t>(error); 625 } 626 627 template <typename MF, MF memFunc, typename ...Args> 628 static int32_t layerHook(hwc2_device_t* device, hwc2_display_t displayId, 629 hwc2_layer_t layerId, Args... args) { 630 return HWC2On1Adapter::callLayerFunction(device, displayId, layerId, 631 memFunc, std::forward<Args>(args)...); 632 } 633 634 // Layer state functions 635 636 static int32_t setLayerBlendModeHook(hwc2_device_t* device, 637 hwc2_display_t display, hwc2_layer_t layer, int32_t intMode) { 638 auto mode = static_cast<HWC2::BlendMode>(intMode); 639 return callLayerFunction(device, display, layer, 640 &Layer::setBlendMode, mode); 641 } 642 643 static int32_t setLayerCompositionTypeHook(hwc2_device_t* device, 644 hwc2_display_t display, hwc2_layer_t layer, int32_t intType) { 645 auto type = static_cast<HWC2::Composition>(intType); 646 return callLayerFunction(device, display, layer, 647 &Layer::setCompositionType, type); 648 } 649 650 static int32_t setLayerDataspaceHook(hwc2_device_t* device, 651 hwc2_display_t display, hwc2_layer_t layer, int32_t intDataspace) { 652 auto dataspace = static_cast<android_dataspace_t>(intDataspace); 653 return callLayerFunction(device, display, layer, &Layer::setDataspace, 654 dataspace); 655 } 656 657 static int32_t setLayerTransformHook(hwc2_device_t* device, 658 hwc2_display_t display, hwc2_layer_t layer, int32_t intTransform) { 659 auto transform = static_cast<HWC2::Transform>(intTransform); 660 return callLayerFunction(device, display, layer, &Layer::setTransform, 661 transform); 662 } 663 664 static int32_t setLayerZOrderHook(hwc2_device_t* device, 665 hwc2_display_t display, hwc2_layer_t layer, uint32_t z) { 666 return callDisplayFunction(device, display, &Display::updateLayerZ, 667 layer, z); 668 } 669 670 // Adapter internals 671 672 void populateCapabilities(); 673 Display* getDisplay(hwc2_display_t id); 674 std::tuple<Layer*, HWC2::Error> getLayer(hwc2_display_t displayId, 675 hwc2_layer_t layerId); 676 void populatePrimary(); 677 678 bool prepareAllDisplays(); 679 std::vector<struct hwc_display_contents_1*> mHwc1Contents; 680 HWC2::Error setAllDisplays(); 681 682 // Callbacks 683 void hwc1Invalidate(); 684 void hwc1Vsync(int hwc1DisplayId, int64_t timestamp); 685 void hwc1Hotplug(int hwc1DisplayId, int connected); 686 687 // These are set in the constructor and before any asynchronous events are 688 // possible 689 690 struct hwc_composer_device_1* const mHwc1Device; 691 const uint8_t mHwc1MinorVersion; 692 bool mHwc1SupportsVirtualDisplays; 693 bool mHwc1SupportsBackgroundColor; 694 695 class Callbacks; 696 const std::unique_ptr<Callbacks> mHwc1Callbacks; 697 698 std::unordered_set<HWC2::Capability> mCapabilities; 699 700 // These are only accessed from the main SurfaceFlinger thread (not from 701 // callbacks or dump 702 703 std::map<hwc2_layer_t, std::shared_ptr<Layer>> mLayers; 704 705 // A HWC1 supports only one virtual display. 706 std::shared_ptr<Display> mHwc1VirtualDisplay; 707 708 // These are potentially accessed from multiple threads, and are protected 709 // by this mutex. This needs to be recursive, since the HWC1 implementation 710 // can call back into the invalidate callback on the same thread that is 711 // calling prepare. 712 std::recursive_timed_mutex mStateMutex; 713 714 struct CallbackInfo { 715 hwc2_callback_data_t data; 716 hwc2_function_pointer_t pointer; 717 }; 718 std::unordered_map<HWC2::Callback, CallbackInfo> mCallbacks; 719 bool mHasPendingInvalidate; 720 721 // There is a small gap between the time the HWC1 module is started and 722 // when the callbacks for vsync and hotplugs are registered by the 723 // HWC2on1Adapter. To prevent losing events they are stored in these arrays 724 // and fed to the callback as soon as possible. 725 std::vector<std::pair<int, int64_t>> mPendingVsyncs; 726 std::vector<std::pair<int, int>> mPendingHotplugs; 727 728 // Mapping between HWC1 display id and Display objects. 729 std::map<hwc2_display_t, std::shared_ptr<Display>> mDisplays; 730 731 // Map HWC1 display type (HWC_DISPLAY_PRIMARY, HWC_DISPLAY_EXTERNAL, 732 // HWC_DISPLAY_VIRTUAL) to Display IDs generated by HWC2on1Adapter objects. 733 std::unordered_map<int, hwc2_display_t> mHwc1DisplayMap; 734 }; 735 736 } // namespace android 737 738 #endif 739
