HWC2On1Adapter.h revision 5df2a86063c6a83813fc1aa3d8938a82f7ff8f14 
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 <ui/Fence.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
37struct hwc_composer_device_1;
38struct hwc_display_contents_1;
39struct hwc_layer_1;
40
41namespace android {
42
43class HWC2On1Adapter : public hwc2_device_t
44{
45public:
46    HWC2On1Adapter(struct hwc_composer_device_1* hwc1Device);
47    ~HWC2On1Adapter();
48
49    struct hwc_composer_device_1* getHwc1Device() const { return mHwc1Device; }
50    uint8_t getHwc1MinorVersion() const { return mHwc1MinorVersion; }
51
52private:
53    static inline HWC2On1Adapter* getAdapter(hwc2_device_t* device) {
54        return static_cast<HWC2On1Adapter*>(device);
55    }
56
57    // getCapabilities
58
59    void doGetCapabilities(uint32_t* outCount,
60            int32_t* /*hwc2_capability_t*/ outCapabilities);
61    static void getCapabilitiesHook(hwc2_device_t* device, uint32_t* outCount,
62            int32_t* /*hwc2_capability_t*/ outCapabilities) {
63        getAdapter(device)->doGetCapabilities(outCount, outCapabilities);
64    }
65
66    // getFunction
67
68    hwc2_function_pointer_t doGetFunction(HWC2::FunctionDescriptor descriptor);
69    static hwc2_function_pointer_t getFunctionHook(hwc2_device_t* device,
70            int32_t intDesc) {
71        auto descriptor = static_cast<HWC2::FunctionDescriptor>(intDesc);
72        return getAdapter(device)->doGetFunction(descriptor);
73    }
74
75    // Device functions
76
77    HWC2::Error createVirtualDisplay(uint32_t width, uint32_t height,
78            hwc2_display_t* outDisplay);
79    static int32_t createVirtualDisplayHook(hwc2_device_t* device,
80            uint32_t width, uint32_t height, hwc2_display_t* outDisplay) {
81        auto error = getAdapter(device)->createVirtualDisplay(width, height,
82                outDisplay);
83        return static_cast<int32_t>(error);
84    }
85
86    HWC2::Error destroyVirtualDisplay(hwc2_display_t display);
87    static int32_t destroyVirtualDisplayHook(hwc2_device_t* device,
88            hwc2_display_t display) {
89        auto error = getAdapter(device)->destroyVirtualDisplay(display);
90        return static_cast<int32_t>(error);
91    }
92
93    std::string mDumpString;
94    void dump(uint32_t* outSize, char* outBuffer);
95    static void dumpHook(hwc2_device_t* device, uint32_t* outSize,
96            char* outBuffer) {
97        getAdapter(device)->dump(outSize, outBuffer);
98    }
99
100    uint32_t getMaxVirtualDisplayCount();
101    static uint32_t getMaxVirtualDisplayCountHook(hwc2_device_t* device) {
102        return getAdapter(device)->getMaxVirtualDisplayCount();
103    }
104
105    HWC2::Error registerCallback(HWC2::Callback descriptor,
106            hwc2_callback_data_t callbackData, hwc2_function_pointer_t pointer);
107    static int32_t registerCallbackHook(hwc2_device_t* device,
108            int32_t intDesc, hwc2_callback_data_t callbackData,
109            hwc2_function_pointer_t pointer) {
110        auto descriptor = static_cast<HWC2::Callback>(intDesc);
111        auto error = getAdapter(device)->registerCallback(descriptor,
112                callbackData, pointer);
113        return static_cast<int32_t>(error);
114    }
115
116    // Display functions
117
118    class Layer;
119
120    class SortLayersByZ {
121        public:
122            bool operator()(const std::shared_ptr<Layer>& lhs,
123                    const std::shared_ptr<Layer>& rhs);
124    };
125
126    class DisplayContentsDeleter {
127        public:
128            void operator()(struct hwc_display_contents_1* contents);
129    };
130
131    class DeferredFence {
132        public:
133            DeferredFence()
134              : mMutex(),
135                mFences({Fence::NO_FENCE, Fence::NO_FENCE}) {}
136
137            void add(int32_t fenceFd) {
138                mFences.emplace(new Fence(fenceFd));
139                mFences.pop();
140            }
141
142            const sp<Fence>& get() const {
143                return mFences.front();
144            }
145
146        private:
147            mutable std::mutex mMutex;
148            std::queue<sp<Fence>> mFences;
149    };
150
151    class FencedBuffer {
152        public:
153            FencedBuffer() : mBuffer(nullptr), mFence(Fence::NO_FENCE) {}
154
155            void setBuffer(buffer_handle_t buffer) { mBuffer = buffer; }
156            void setFence(int fenceFd) { mFence = new Fence(fenceFd); }
157
158            buffer_handle_t getBuffer() const { return mBuffer; }
159            int getFence() const { return mFence->dup(); }
160
161        private:
162            buffer_handle_t mBuffer;
163            sp<Fence> mFence;
164    };
165
166    class Display {
167        public:
168            typedef std::unique_ptr<hwc_display_contents_1,
169                    DisplayContentsDeleter> HWC1Contents;
170
171            Display(HWC2On1Adapter& device, HWC2::DisplayType type);
172
173            hwc2_display_t getId() const { return mId; }
174            HWC2On1Adapter& getDevice() const { return mDevice; }
175
176            // Does not require locking because it is set before adding the
177            // Displays to the Adapter's list of displays
178            void setHwc1Id(int32_t id) { mHwc1Id = id; }
179            int32_t getHwc1Id() const { return mHwc1Id; }
180
181            void incDirty() { ++mDirtyCount; }
182            void decDirty() { --mDirtyCount; }
183            bool isDirty() const { return mDirtyCount > 0 || mZIsDirty; }
184
185            // HWC2 Display functions
186            HWC2::Error acceptChanges();
187            HWC2::Error createLayer(hwc2_layer_t* outLayerId);
188            HWC2::Error destroyLayer(hwc2_layer_t layerId);
189            HWC2::Error getActiveConfig(hwc2_config_t* outConfigId);
190            HWC2::Error getAttribute(hwc2_config_t configId,
191                    HWC2::Attribute attribute, int32_t* outValue);
192            HWC2::Error getChangedCompositionTypes(uint32_t* outNumElements,
193                    hwc2_layer_t* outLayers, int32_t* outTypes);
194            HWC2::Error getConfigs(uint32_t* outNumConfigs,
195                    hwc2_config_t* outConfigIds);
196            HWC2::Error getDozeSupport(int32_t* outSupport);
197            HWC2::Error getHdrCapabilities(uint32_t* outNumTypes,
198                    int32_t* outTypes, float* outMaxLuminance,
199                    float* outMaxAverageLuminance, float* outMinLuminance);
200            HWC2::Error getName(uint32_t* outSize, char* outName);
201            HWC2::Error getReleaseFences(uint32_t* outNumElements,
202                    hwc2_layer_t* outLayers, int32_t* outFences);
203            HWC2::Error getRequests(int32_t* outDisplayRequests,
204                    uint32_t* outNumElements, hwc2_layer_t* outLayers,
205                    int32_t* outLayerRequests);
206            HWC2::Error getType(int32_t* outType);
207            HWC2::Error present(int32_t* outRetireFence);
208            HWC2::Error setActiveConfig(hwc2_config_t configId);
209            HWC2::Error setClientTarget(buffer_handle_t target,
210                    int32_t acquireFence, int32_t dataspace);
211            HWC2::Error setColorTransform(android_color_transform_t hint);
212            HWC2::Error setOutputBuffer(buffer_handle_t buffer,
213                    int32_t releaseFence);
214            HWC2::Error setPowerMode(HWC2::PowerMode mode);
215            HWC2::Error setVsyncEnabled(HWC2::Vsync enabled);
216            HWC2::Error validate(uint32_t* outNumTypes,
217                    uint32_t* outNumRequests);
218
219            HWC2::Error updateLayerZ(hwc2_layer_t layerId, uint32_t z);
220
221            // Read configs from HWC1 device
222            void populateConfigs();
223
224            // Set configs for a virtual display
225            void populateConfigs(uint32_t width, uint32_t height);
226
227            bool prepare();
228            HWC1Contents cloneRequestedContents() const;
229            void setReceivedContents(HWC1Contents contents);
230            bool hasChanges() const;
231            HWC2::Error set(hwc_display_contents_1& hwcContents);
232            void addRetireFence(int fenceFd);
233            void addReleaseFences(const hwc_display_contents_1& hwcContents);
234
235            bool hasColorTransform() const;
236
237            std::string dump() const;
238
239        private:
240            class Config {
241                public:
242                    Config(Display& display, hwc2_config_t id, uint32_t hwcId)
243                      : mDisplay(display),
244                        mId(id),
245                        mHwcId(hwcId),
246                        mAttributes() {}
247
248                    bool isOnDisplay(const Display& display) const {
249                        return display.getId() == mDisplay.getId();
250                    }
251
252                    hwc2_config_t getId() const { return mId; }
253                    uint32_t getHwcId() const { return mHwcId; }
254
255                    void setAttribute(HWC2::Attribute attribute, int32_t value);
256                    int32_t getAttribute(HWC2::Attribute attribute) const;
257
258                    std::string toString() const;
259
260                private:
261                    Display& mDisplay;
262                    const hwc2_config_t mId;
263                    const uint32_t mHwcId;
264                    std::unordered_map<HWC2::Attribute, int32_t> mAttributes;
265            };
266
267            class Changes {
268                public:
269                    uint32_t getNumTypes() const {
270                        return static_cast<uint32_t>(mTypeChanges.size());
271                    }
272
273                    uint32_t getNumLayerRequests() const {
274                        return static_cast<uint32_t>(mLayerRequests.size());
275                    }
276
277                    const std::unordered_map<hwc2_layer_t, HWC2::Composition>&
278                            getTypeChanges() const {
279                        return mTypeChanges;
280                    }
281
282                    const std::unordered_map<hwc2_layer_t, HWC2::LayerRequest>&
283                            getLayerRequests() const {
284                        return mLayerRequests;
285                    }
286
287                    int32_t getDisplayRequests() const {
288                        int32_t requests = 0;
289                        for (auto request : mDisplayRequests) {
290                            requests |= static_cast<int32_t>(request);
291                        }
292                        return requests;
293                    }
294
295                    void addTypeChange(hwc2_layer_t layerId,
296                            HWC2::Composition type) {
297                        mTypeChanges.insert({layerId, type});
298                    }
299
300                    void clearTypeChanges() { mTypeChanges.clear(); }
301
302                    void addLayerRequest(hwc2_layer_t layerId,
303                            HWC2::LayerRequest request) {
304                        mLayerRequests.insert({layerId, request});
305                    }
306
307                private:
308                    std::unordered_map<hwc2_layer_t, HWC2::Composition>
309                            mTypeChanges;
310                    std::unordered_map<hwc2_layer_t, HWC2::LayerRequest>
311                            mLayerRequests;
312                    std::unordered_set<HWC2::DisplayRequest> mDisplayRequests;
313            };
314
315            std::shared_ptr<const Config>
316                    getConfig(hwc2_config_t configId) const;
317
318            void reallocateHwc1Contents();
319            void assignHwc1LayerIds();
320
321            void updateTypeChanges(const struct hwc_layer_1& hwc1Layer,
322                    const Layer& layer);
323            void updateLayerRequests(const struct hwc_layer_1& hwc1Layer,
324                    const Layer& layer);
325
326            void prepareFramebufferTarget();
327
328            static std::atomic<hwc2_display_t> sNextId;
329            const hwc2_display_t mId;
330            HWC2On1Adapter& mDevice;
331
332            std::atomic<size_t> mDirtyCount;
333
334            // The state of this display should only be modified from
335            // SurfaceFlinger's main loop, with the exception of when dump is
336            // called. To prevent a bad state from crashing us during a dump
337            // call, all public calls into Display must acquire this mutex.
338            //
339            // It is recursive because we don't want to deadlock in validate
340            // (or present) when we call HWC2On1Adapter::prepareAllDisplays
341            // (or setAllDisplays), which calls back into Display functions
342            // which require locking.
343            mutable std::recursive_mutex mStateMutex;
344
345            bool mZIsDirty;
346            HWC1Contents mHwc1RequestedContents;
347            HWC1Contents mHwc1ReceivedContents;
348            DeferredFence mRetireFence;
349
350            // Will only be non-null after the layer has been validated but
351            // before it has been presented
352            std::unique_ptr<Changes> mChanges;
353
354            int32_t mHwc1Id;
355            std::vector<std::shared_ptr<Config>> mConfigs;
356            std::shared_ptr<const Config> mActiveConfig;
357            std::string mName;
358            HWC2::DisplayType mType;
359            HWC2::PowerMode mPowerMode;
360            HWC2::Vsync mVsyncEnabled;
361
362            FencedBuffer mClientTarget;
363            FencedBuffer mOutputBuffer;
364
365            bool mHasColorTransform;
366
367            std::multiset<std::shared_ptr<Layer>, SortLayersByZ> mLayers;
368            std::unordered_map<size_t, std::shared_ptr<Layer>> mHwc1LayerMap;
369    };
370
371    template <typename ...Args>
372    static int32_t callDisplayFunction(hwc2_device_t* device,
373            hwc2_display_t displayId, HWC2::Error (Display::*member)(Args...),
374            Args... args) {
375        auto display = getAdapter(device)->getDisplay(displayId);
376        if (!display) {
377            return static_cast<int32_t>(HWC2::Error::BadDisplay);
378        }
379        auto error = ((*display).*member)(std::forward<Args>(args)...);
380        return static_cast<int32_t>(error);
381    }
382
383    template <typename MF, MF memFunc, typename ...Args>
384    static int32_t displayHook(hwc2_device_t* device, hwc2_display_t displayId,
385            Args... args) {
386        return HWC2On1Adapter::callDisplayFunction(device, displayId, memFunc,
387                std::forward<Args>(args)...);
388    }
389
390    static int32_t getDisplayAttributeHook(hwc2_device_t* device,
391            hwc2_display_t display, hwc2_config_t config,
392            int32_t intAttribute, int32_t* outValue) {
393        auto attribute = static_cast<HWC2::Attribute>(intAttribute);
394        return callDisplayFunction(device, display, &Display::getAttribute,
395                config, attribute, outValue);
396    }
397
398    static int32_t setColorTransformHook(hwc2_device_t* device,
399            hwc2_display_t display, const float* /*matrix*/,
400            int32_t /*android_color_transform_t*/ intHint) {
401        // We intentionally throw away the matrix, because if the hint is
402        // anything other than IDENTITY, we have to fall back to client
403        // composition anyway
404        auto hint = static_cast<android_color_transform_t>(intHint);
405        return callDisplayFunction(device, display, &Display::setColorTransform,
406                hint);
407    }
408
409    static int32_t setPowerModeHook(hwc2_device_t* device,
410            hwc2_display_t display, int32_t intMode) {
411        auto mode = static_cast<HWC2::PowerMode>(intMode);
412        return callDisplayFunction(device, display, &Display::setPowerMode,
413                mode);
414    }
415
416    static int32_t setVsyncEnabledHook(hwc2_device_t* device,
417            hwc2_display_t display, int32_t intEnabled) {
418        auto enabled = static_cast<HWC2::Vsync>(intEnabled);
419        return callDisplayFunction(device, display, &Display::setVsyncEnabled,
420                enabled);
421    }
422
423    // Layer functions
424
425    template <typename T>
426    class LatchedState {
427        public:
428            LatchedState(Layer& parent, T initialValue)
429              : mParent(parent),
430                mPendingValue(initialValue),
431                mValue(initialValue) {}
432
433            void setPending(T value) {
434                if (value == mPendingValue) {
435                    return;
436                }
437                if (mPendingValue == mValue) {
438                    mParent.incDirty();
439                } else if (value == mValue) {
440                    mParent.decDirty();
441                }
442                mPendingValue = value;
443            }
444
445            T getValue() const { return mValue; }
446            T getPendingValue() const { return mPendingValue; }
447
448            bool isDirty() const { return mPendingValue != mValue; }
449
450            void latch() {
451                if (isDirty()) {
452                    mValue = mPendingValue;
453                    mParent.decDirty();
454                }
455            }
456
457        private:
458            Layer& mParent;
459            T mPendingValue;
460            T mValue;
461    };
462
463    class Layer {
464        public:
465            Layer(Display& display);
466
467            bool operator==(const Layer& other) { return mId == other.mId; }
468            bool operator!=(const Layer& other) { return !(*this == other); }
469
470            hwc2_layer_t getId() const { return mId; }
471            Display& getDisplay() const { return mDisplay; }
472
473            void incDirty() { if (mDirtyCount++ == 0) mDisplay.incDirty(); }
474            void decDirty() { if (--mDirtyCount == 0) mDisplay.decDirty(); }
475            bool isDirty() const { return mDirtyCount > 0; }
476
477            // HWC2 Layer functions
478            HWC2::Error setBuffer(buffer_handle_t buffer, int32_t acquireFence);
479            HWC2::Error setCursorPosition(int32_t x, int32_t y);
480            HWC2::Error setSurfaceDamage(hwc_region_t damage);
481
482            // HWC2 Layer state functions
483            HWC2::Error setBlendMode(HWC2::BlendMode mode);
484            HWC2::Error setColor(hwc_color_t color);
485            HWC2::Error setCompositionType(HWC2::Composition type);
486            HWC2::Error setDataspace(android_dataspace_t dataspace);
487            HWC2::Error setDisplayFrame(hwc_rect_t frame);
488            HWC2::Error setPlaneAlpha(float alpha);
489            HWC2::Error setSidebandStream(const native_handle_t* stream);
490            HWC2::Error setSourceCrop(hwc_frect_t crop);
491            HWC2::Error setTransform(HWC2::Transform transform);
492            HWC2::Error setVisibleRegion(hwc_region_t visible);
493            HWC2::Error setZ(uint32_t z);
494
495            HWC2::Composition getCompositionType() const {
496                return mCompositionType.getValue();
497            }
498            uint32_t getZ() const { return mZ; }
499
500            void addReleaseFence(int fenceFd);
501            const sp<Fence>& getReleaseFence() const;
502
503            void setHwc1Id(size_t id) { mHwc1Id = id; }
504            size_t getHwc1Id() const { return mHwc1Id; }
505
506            void applyState(struct hwc_layer_1& hwc1Layer, bool applyAllState);
507
508            std::string dump() const;
509
510        private:
511            void applyCommonState(struct hwc_layer_1& hwc1Layer,
512                    bool applyAllState);
513            void applySolidColorState(struct hwc_layer_1& hwc1Layer,
514                    bool applyAllState);
515            void applySidebandState(struct hwc_layer_1& hwc1Layer,
516                    bool applyAllState);
517            void applyBufferState(struct hwc_layer_1& hwc1Layer);
518            void applyCompositionType(struct hwc_layer_1& hwc1Layer,
519                    bool applyAllState);
520
521            static std::atomic<hwc2_layer_t> sNextId;
522            const hwc2_layer_t mId;
523            Display& mDisplay;
524            size_t mDirtyCount;
525
526            FencedBuffer mBuffer;
527            std::vector<hwc_rect_t> mSurfaceDamage;
528
529            LatchedState<HWC2::BlendMode> mBlendMode;
530            LatchedState<hwc_color_t> mColor;
531            LatchedState<HWC2::Composition> mCompositionType;
532            LatchedState<hwc_rect_t> mDisplayFrame;
533            LatchedState<float> mPlaneAlpha;
534            LatchedState<const native_handle_t*> mSidebandStream;
535            LatchedState<hwc_frect_t> mSourceCrop;
536            LatchedState<HWC2::Transform> mTransform;
537            LatchedState<std::vector<hwc_rect_t>> mVisibleRegion;
538            uint32_t mZ;
539
540            DeferredFence mReleaseFence;
541
542            size_t mHwc1Id;
543            bool mHasUnsupportedDataspace;
544            bool mHasUnsupportedPlaneAlpha;
545    };
546
547    template <typename ...Args>
548    static int32_t callLayerFunction(hwc2_device_t* device,
549            hwc2_display_t displayId, hwc2_layer_t layerId,
550            HWC2::Error (Layer::*member)(Args...), Args... args) {
551        auto result = getAdapter(device)->getLayer(displayId, layerId);
552        auto error = std::get<HWC2::Error>(result);
553        if (error == HWC2::Error::None) {
554            auto layer = std::get<Layer*>(result);
555            error = ((*layer).*member)(std::forward<Args>(args)...);
556        }
557        return static_cast<int32_t>(error);
558    }
559
560    template <typename MF, MF memFunc, typename ...Args>
561    static int32_t layerHook(hwc2_device_t* device, hwc2_display_t displayId,
562            hwc2_layer_t layerId, Args... args) {
563        return HWC2On1Adapter::callLayerFunction(device, displayId, layerId,
564                memFunc, std::forward<Args>(args)...);
565    }
566
567    // Layer state functions
568
569    static int32_t setLayerBlendModeHook(hwc2_device_t* device,
570            hwc2_display_t display, hwc2_layer_t layer, int32_t intMode) {
571        auto mode = static_cast<HWC2::BlendMode>(intMode);
572        return callLayerFunction(device, display, layer,
573                &Layer::setBlendMode, mode);
574    }
575
576    static int32_t setLayerCompositionTypeHook(hwc2_device_t* device,
577            hwc2_display_t display, hwc2_layer_t layer, int32_t intType) {
578        auto type = static_cast<HWC2::Composition>(intType);
579        return callLayerFunction(device, display, layer,
580                &Layer::setCompositionType, type);
581    }
582
583    static int32_t setLayerDataspaceHook(hwc2_device_t* device,
584            hwc2_display_t display, hwc2_layer_t layer, int32_t intDataspace) {
585        auto dataspace = static_cast<android_dataspace_t>(intDataspace);
586        return callLayerFunction(device, display, layer, &Layer::setDataspace,
587                dataspace);
588    }
589
590    static int32_t setLayerTransformHook(hwc2_device_t* device,
591            hwc2_display_t display, hwc2_layer_t layer, int32_t intTransform) {
592        auto transform = static_cast<HWC2::Transform>(intTransform);
593        return callLayerFunction(device, display, layer, &Layer::setTransform,
594                transform);
595    }
596
597    static int32_t setLayerZOrderHook(hwc2_device_t* device,
598            hwc2_display_t display, hwc2_layer_t layer, uint32_t z) {
599        return callDisplayFunction(device, display, &Display::updateLayerZ,
600                layer, z);
601    }
602
603    // Adapter internals
604
605    void populateCapabilities();
606    Display* getDisplay(hwc2_display_t id);
607    std::tuple<Layer*, HWC2::Error> getLayer(hwc2_display_t displayId,
608            hwc2_layer_t layerId);
609    void populatePrimary();
610
611    bool prepareAllDisplays();
612    std::vector<struct hwc_display_contents_1*> mHwc1Contents;
613    HWC2::Error setAllDisplays();
614
615    void hwc1Invalidate();
616    void hwc1Vsync(int hwc1DisplayId, int64_t timestamp);
617    void hwc1Hotplug(int hwc1DisplayId, int connected);
618
619    // These are set in the constructor and before any asynchronous events are
620    // possible
621
622    struct hwc_composer_device_1* const mHwc1Device;
623    const uint8_t mHwc1MinorVersion;
624    bool mHwc1SupportsVirtualDisplays;
625
626    class Callbacks;
627    const std::unique_ptr<Callbacks> mHwc1Callbacks;
628
629    std::unordered_set<HWC2::Capability> mCapabilities;
630
631    // These are only accessed from the main SurfaceFlinger thread (not from
632    // callbacks or dump
633
634    std::map<hwc2_layer_t, std::shared_ptr<Layer>> mLayers;
635    std::shared_ptr<Display> mHwc1VirtualDisplay;
636
637    // These are potentially accessed from multiple threads, and are protected
638    // by this mutex. This needs to be recursive, since the HWC1 implementation
639    // can call back into the invalidate callback on the same thread that is
640    // calling prepare.
641    std::recursive_timed_mutex mStateMutex;
642
643    struct CallbackInfo {
644        hwc2_callback_data_t data;
645        hwc2_function_pointer_t pointer;
646    };
647    std::unordered_map<HWC2::Callback, CallbackInfo> mCallbacks;
648    bool mHasPendingInvalidate;
649    std::vector<std::pair<int, int64_t>> mPendingVsyncs;
650    std::vector<std::pair<int, int>> mPendingHotplugs;
651
652    std::map<hwc2_display_t, std::shared_ptr<Display>> mDisplays;
653    std::unordered_map<int, hwc2_display_t> mHwc1DisplayMap;
654};
655
656} // namespace android
657
658#endif
659