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, int32_t* /*format*/,
81            hwc2_display_t* outDisplay) {
82        // HWC1 implementations cannot override the buffer format requested by
83        // the consumer
84        auto error = getAdapter(device)->createVirtualDisplay(width, height,
85                outDisplay);
86        return static_cast<int32_t>(error);
87    }
88
89    HWC2::Error destroyVirtualDisplay(hwc2_display_t display);
90    static int32_t destroyVirtualDisplayHook(hwc2_device_t* device,
91            hwc2_display_t display) {
92        auto error = getAdapter(device)->destroyVirtualDisplay(display);
93        return static_cast<int32_t>(error);
94    }
95
96    std::string mDumpString;
97    void dump(uint32_t* outSize, char* outBuffer);
98    static void dumpHook(hwc2_device_t* device, uint32_t* outSize,
99            char* outBuffer) {
100        getAdapter(device)->dump(outSize, outBuffer);
101    }
102
103    uint32_t getMaxVirtualDisplayCount();
104    static uint32_t getMaxVirtualDisplayCountHook(hwc2_device_t* device) {
105        return getAdapter(device)->getMaxVirtualDisplayCount();
106    }
107
108    HWC2::Error registerCallback(HWC2::Callback descriptor,
109            hwc2_callback_data_t callbackData, hwc2_function_pointer_t pointer);
110    static int32_t registerCallbackHook(hwc2_device_t* device,
111            int32_t intDesc, hwc2_callback_data_t callbackData,
112            hwc2_function_pointer_t pointer) {
113        auto descriptor = static_cast<HWC2::Callback>(intDesc);
114        auto error = getAdapter(device)->registerCallback(descriptor,
115                callbackData, pointer);
116        return static_cast<int32_t>(error);
117    }
118
119    // Display functions
120
121    class Layer;
122
123    class SortLayersByZ {
124        public:
125            bool operator()(const std::shared_ptr<Layer>& lhs,
126                    const std::shared_ptr<Layer>& rhs);
127    };
128
129    class DisplayContentsDeleter {
130        public:
131            void operator()(struct hwc_display_contents_1* contents);
132    };
133
134    class DeferredFence {
135        public:
136            DeferredFence()
137              : mMutex(),
138                mFences({Fence::NO_FENCE, Fence::NO_FENCE}) {}
139
140            void add(int32_t fenceFd) {
141                mFences.emplace(new Fence(fenceFd));
142                mFences.pop();
143            }
144
145            const sp<Fence>& get() const {
146                return mFences.front();
147            }
148
149        private:
150            mutable std::mutex mMutex;
151            std::queue<sp<Fence>> mFences;
152    };
153
154    class FencedBuffer {
155        public:
156            FencedBuffer() : mBuffer(nullptr), mFence(Fence::NO_FENCE) {}
157
158            void setBuffer(buffer_handle_t buffer) { mBuffer = buffer; }
159            void setFence(int fenceFd) { mFence = new Fence(fenceFd); }
160
161            buffer_handle_t getBuffer() const { return mBuffer; }
162            int getFence() const { return mFence->dup(); }
163
164        private:
165            buffer_handle_t mBuffer;
166            sp<Fence> mFence;
167    };
168
169    class Display {
170        public:
171            typedef std::unique_ptr<hwc_display_contents_1,
172                    DisplayContentsDeleter> HWC1Contents;
173
174            Display(HWC2On1Adapter& device, HWC2::DisplayType type);
175
176            hwc2_display_t getId() const { return mId; }
177            HWC2On1Adapter& getDevice() const { return mDevice; }
178
179            // Does not require locking because it is set before adding the
180            // Displays to the Adapter's list of displays
181            void setHwc1Id(int32_t id) { mHwc1Id = id; }
182            int32_t getHwc1Id() const { return mHwc1Id; }
183
184            void incDirty() { ++mDirtyCount; }
185            void decDirty() { --mDirtyCount; }
186            bool isDirty() const { return mDirtyCount > 0 || mZIsDirty; }
187
188            // HWC2 Display functions
189            HWC2::Error acceptChanges();
190            HWC2::Error createLayer(hwc2_layer_t* outLayerId);
191            HWC2::Error destroyLayer(hwc2_layer_t layerId);
192            HWC2::Error getActiveConfig(hwc2_config_t* outConfigId);
193            HWC2::Error getAttribute(hwc2_config_t configId,
194                    HWC2::Attribute attribute, int32_t* outValue);
195            HWC2::Error getChangedCompositionTypes(uint32_t* outNumElements,
196                    hwc2_layer_t* outLayers, int32_t* outTypes);
197            HWC2::Error getColorModes(uint32_t* outNumModes, int32_t* outModes);
198            HWC2::Error getConfigs(uint32_t* outNumConfigs,
199                    hwc2_config_t* outConfigIds);
200            HWC2::Error getDozeSupport(int32_t* outSupport);
201            HWC2::Error getHdrCapabilities(uint32_t* outNumTypes,
202                    int32_t* outTypes, float* outMaxLuminance,
203                    float* outMaxAverageLuminance, float* outMinLuminance);
204            HWC2::Error getName(uint32_t* outSize, char* outName);
205            HWC2::Error getReleaseFences(uint32_t* outNumElements,
206                    hwc2_layer_t* outLayers, int32_t* outFences);
207            HWC2::Error getRequests(int32_t* outDisplayRequests,
208                    uint32_t* outNumElements, hwc2_layer_t* outLayers,
209                    int32_t* outLayerRequests);
210            HWC2::Error getType(int32_t* outType);
211            HWC2::Error present(int32_t* outRetireFence);
212            HWC2::Error setActiveConfig(hwc2_config_t configId);
213            HWC2::Error setClientTarget(buffer_handle_t target,
214                    int32_t acquireFence, int32_t dataspace,
215                    hwc_region_t damage);
216            HWC2::Error setColorMode(int32_t mode);
217            HWC2::Error setColorTransform(android_color_transform_t hint);
218            HWC2::Error setOutputBuffer(buffer_handle_t buffer,
219                    int32_t releaseFence);
220            HWC2::Error setPowerMode(HWC2::PowerMode mode);
221            HWC2::Error setVsyncEnabled(HWC2::Vsync enabled);
222            HWC2::Error validate(uint32_t* outNumTypes,
223                    uint32_t* outNumRequests);
224
225            HWC2::Error updateLayerZ(hwc2_layer_t layerId, uint32_t z);
226
227            // Read configs from HWC1 device
228            void populateConfigs();
229
230            // Set configs for a virtual display
231            void populateConfigs(uint32_t width, uint32_t height);
232
233            bool prepare();
234            HWC1Contents cloneRequestedContents() const;
235            void setReceivedContents(HWC1Contents contents);
236            bool hasChanges() const;
237            HWC2::Error set(hwc_display_contents_1& hwcContents);
238            void addRetireFence(int fenceFd);
239            void addReleaseFences(const hwc_display_contents_1& hwcContents);
240
241            bool hasColorTransform() const;
242
243            std::string dump() const;
244
245        private:
246            class Config {
247                public:
248                    Config(Display& display)
249                      : mDisplay(display),
250                        mAttributes() {}
251
252                    bool isOnDisplay(const Display& display) const {
253                        return display.getId() == mDisplay.getId();
254                    }
255
256                    void setAttribute(HWC2::Attribute attribute, int32_t value);
257                    int32_t getAttribute(HWC2::Attribute attribute) const;
258
259                    void setHwc1Id(uint32_t id);
260                    bool hasHwc1Id(uint32_t id) const;
261                    int32_t getColorModeForHwc1Id(uint32_t id) const;
262                    HWC2::Error getHwc1IdForColorMode(int32_t mode,
263                            uint32_t* outId) const;
264
265                    void setId(hwc2_config_t id) { mId = id; }
266                    hwc2_config_t getId() const { return mId; }
267
268                    // Attempts to merge two configs that differ only in color
269                    // mode. Returns whether the merge was successful
270                    bool merge(const Config& other);
271
272                    std::set<int32_t> getColorTransforms() const;
273
274                    // splitLine divides the output into two lines suitable for
275                    // dumpsys SurfaceFlinger
276                    std::string toString(bool splitLine = false) const;
277
278                private:
279                    Display& mDisplay;
280                    hwc2_config_t mId;
281                    std::unordered_map<HWC2::Attribute, int32_t> mAttributes;
282
283                    // Maps from color transform to HWC1 config ID
284                    std::unordered_map<int32_t, uint32_t> mHwc1Ids;
285            };
286
287            class Changes {
288                public:
289                    uint32_t getNumTypes() const {
290                        return static_cast<uint32_t>(mTypeChanges.size());
291                    }
292
293                    uint32_t getNumLayerRequests() const {
294                        return static_cast<uint32_t>(mLayerRequests.size());
295                    }
296
297                    const std::unordered_map<hwc2_layer_t, HWC2::Composition>&
298                            getTypeChanges() const {
299                        return mTypeChanges;
300                    }
301
302                    const std::unordered_map<hwc2_layer_t, HWC2::LayerRequest>&
303                            getLayerRequests() const {
304                        return mLayerRequests;
305                    }
306
307                    int32_t getDisplayRequests() const {
308                        int32_t requests = 0;
309                        for (auto request : mDisplayRequests) {
310                            requests |= static_cast<int32_t>(request);
311                        }
312                        return requests;
313                    }
314
315                    void addTypeChange(hwc2_layer_t layerId,
316                            HWC2::Composition type) {
317                        mTypeChanges.insert({layerId, type});
318                    }
319
320                    void clearTypeChanges() { mTypeChanges.clear(); }
321
322                    void addLayerRequest(hwc2_layer_t layerId,
323                            HWC2::LayerRequest request) {
324                        mLayerRequests.insert({layerId, request});
325                    }
326
327                private:
328                    std::unordered_map<hwc2_layer_t, HWC2::Composition>
329                            mTypeChanges;
330                    std::unordered_map<hwc2_layer_t, HWC2::LayerRequest>
331                            mLayerRequests;
332                    std::unordered_set<HWC2::DisplayRequest> mDisplayRequests;
333            };
334
335            std::shared_ptr<const Config>
336                    getConfig(hwc2_config_t configId) const;
337
338            void populateColorModes();
339            void initializeActiveConfig();
340
341            void reallocateHwc1Contents();
342            void assignHwc1LayerIds();
343
344            void updateTypeChanges(const struct hwc_layer_1& hwc1Layer,
345                    const Layer& layer);
346            void updateLayerRequests(const struct hwc_layer_1& hwc1Layer,
347                    const Layer& layer);
348
349            void prepareFramebufferTarget();
350
351            static std::atomic<hwc2_display_t> sNextId;
352            const hwc2_display_t mId;
353            HWC2On1Adapter& mDevice;
354
355            std::atomic<size_t> mDirtyCount;
356
357            // The state of this display should only be modified from
358            // SurfaceFlinger's main loop, with the exception of when dump is
359            // called. To prevent a bad state from crashing us during a dump
360            // call, all public calls into Display must acquire this mutex.
361            //
362            // It is recursive because we don't want to deadlock in validate
363            // (or present) when we call HWC2On1Adapter::prepareAllDisplays
364            // (or setAllDisplays), which calls back into Display functions
365            // which require locking.
366            mutable std::recursive_mutex mStateMutex;
367
368            bool mZIsDirty;
369            HWC1Contents mHwc1RequestedContents;
370            HWC1Contents mHwc1ReceivedContents;
371            DeferredFence mRetireFence;
372
373            // Will only be non-null after the layer has been validated but
374            // before it has been presented
375            std::unique_ptr<Changes> mChanges;
376
377            int32_t mHwc1Id;
378
379            std::vector<std::shared_ptr<Config>> mConfigs;
380            std::shared_ptr<const Config> mActiveConfig;
381            std::set<int32_t> mColorModes;
382            int32_t mActiveColorMode;
383            std::string mName;
384            HWC2::DisplayType mType;
385            HWC2::PowerMode mPowerMode;
386            HWC2::Vsync mVsyncEnabled;
387
388            FencedBuffer mClientTarget;
389            FencedBuffer mOutputBuffer;
390
391            bool mHasColorTransform;
392
393            std::multiset<std::shared_ptr<Layer>, SortLayersByZ> mLayers;
394            std::unordered_map<size_t, std::shared_ptr<Layer>> mHwc1LayerMap;
395    };
396
397    template <typename ...Args>
398    static int32_t callDisplayFunction(hwc2_device_t* device,
399            hwc2_display_t displayId, HWC2::Error (Display::*member)(Args...),
400            Args... args) {
401        auto display = getAdapter(device)->getDisplay(displayId);
402        if (!display) {
403            return static_cast<int32_t>(HWC2::Error::BadDisplay);
404        }
405        auto error = ((*display).*member)(std::forward<Args>(args)...);
406        return static_cast<int32_t>(error);
407    }
408
409    template <typename MF, MF memFunc, typename ...Args>
410    static int32_t displayHook(hwc2_device_t* device, hwc2_display_t displayId,
411            Args... args) {
412        return HWC2On1Adapter::callDisplayFunction(device, displayId, memFunc,
413                std::forward<Args>(args)...);
414    }
415
416    static int32_t getDisplayAttributeHook(hwc2_device_t* device,
417            hwc2_display_t display, hwc2_config_t config,
418            int32_t intAttribute, int32_t* outValue) {
419        auto attribute = static_cast<HWC2::Attribute>(intAttribute);
420        return callDisplayFunction(device, display, &Display::getAttribute,
421                config, attribute, outValue);
422    }
423
424    static int32_t setColorTransformHook(hwc2_device_t* device,
425            hwc2_display_t display, const float* /*matrix*/,
426            int32_t /*android_color_transform_t*/ intHint) {
427        // We intentionally throw away the matrix, because if the hint is
428        // anything other than IDENTITY, we have to fall back to client
429        // composition anyway
430        auto hint = static_cast<android_color_transform_t>(intHint);
431        return callDisplayFunction(device, display, &Display::setColorTransform,
432                hint);
433    }
434
435    static int32_t setPowerModeHook(hwc2_device_t* device,
436            hwc2_display_t display, int32_t intMode) {
437        auto mode = static_cast<HWC2::PowerMode>(intMode);
438        return callDisplayFunction(device, display, &Display::setPowerMode,
439                mode);
440    }
441
442    static int32_t setVsyncEnabledHook(hwc2_device_t* device,
443            hwc2_display_t display, int32_t intEnabled) {
444        auto enabled = static_cast<HWC2::Vsync>(intEnabled);
445        return callDisplayFunction(device, display, &Display::setVsyncEnabled,
446                enabled);
447    }
448
449    // Layer functions
450
451    template <typename T>
452    class LatchedState {
453        public:
454            LatchedState(Layer& parent, T initialValue)
455              : mParent(parent),
456                mPendingValue(initialValue),
457                mValue(initialValue) {}
458
459            void setPending(T value) {
460                if (value == mPendingValue) {
461                    return;
462                }
463                if (mPendingValue == mValue) {
464                    mParent.incDirty();
465                } else if (value == mValue) {
466                    mParent.decDirty();
467                }
468                mPendingValue = value;
469            }
470
471            T getValue() const { return mValue; }
472            T getPendingValue() const { return mPendingValue; }
473
474            bool isDirty() const { return mPendingValue != mValue; }
475
476            void latch() {
477                if (isDirty()) {
478                    mValue = mPendingValue;
479                    mParent.decDirty();
480                }
481            }
482
483        private:
484            Layer& mParent;
485            T mPendingValue;
486            T mValue;
487    };
488
489    class Layer {
490        public:
491            Layer(Display& display);
492
493            bool operator==(const Layer& other) { return mId == other.mId; }
494            bool operator!=(const Layer& other) { return !(*this == other); }
495
496            hwc2_layer_t getId() const { return mId; }
497            Display& getDisplay() const { return mDisplay; }
498
499            void incDirty() { if (mDirtyCount++ == 0) mDisplay.incDirty(); }
500            void decDirty() { if (--mDirtyCount == 0) mDisplay.decDirty(); }
501            bool isDirty() const { return mDirtyCount > 0; }
502
503            // HWC2 Layer functions
504            HWC2::Error setBuffer(buffer_handle_t buffer, int32_t acquireFence);
505            HWC2::Error setCursorPosition(int32_t x, int32_t y);
506            HWC2::Error setSurfaceDamage(hwc_region_t damage);
507
508            // HWC2 Layer state functions
509            HWC2::Error setBlendMode(HWC2::BlendMode mode);
510            HWC2::Error setColor(hwc_color_t color);
511            HWC2::Error setCompositionType(HWC2::Composition type);
512            HWC2::Error setDataspace(android_dataspace_t dataspace);
513            HWC2::Error setDisplayFrame(hwc_rect_t frame);
514            HWC2::Error setPlaneAlpha(float alpha);
515            HWC2::Error setSidebandStream(const native_handle_t* stream);
516            HWC2::Error setSourceCrop(hwc_frect_t crop);
517            HWC2::Error setTransform(HWC2::Transform transform);
518            HWC2::Error setVisibleRegion(hwc_region_t visible);
519            HWC2::Error setZ(uint32_t z);
520
521            HWC2::Composition getCompositionType() const {
522                return mCompositionType.getValue();
523            }
524            uint32_t getZ() const { return mZ; }
525
526            void addReleaseFence(int fenceFd);
527            const sp<Fence>& getReleaseFence() const;
528
529            void setHwc1Id(size_t id) { mHwc1Id = id; }
530            size_t getHwc1Id() const { return mHwc1Id; }
531
532            void applyState(struct hwc_layer_1& hwc1Layer, bool applyAllState);
533
534            std::string dump() const;
535
536        private:
537            void applyCommonState(struct hwc_layer_1& hwc1Layer,
538                    bool applyAllState);
539            void applySolidColorState(struct hwc_layer_1& hwc1Layer,
540                    bool applyAllState);
541            void applySidebandState(struct hwc_layer_1& hwc1Layer,
542                    bool applyAllState);
543            void applyBufferState(struct hwc_layer_1& hwc1Layer);
544            void applyCompositionType(struct hwc_layer_1& hwc1Layer,
545                    bool applyAllState);
546
547            static std::atomic<hwc2_layer_t> sNextId;
548            const hwc2_layer_t mId;
549            Display& mDisplay;
550            size_t mDirtyCount;
551
552            FencedBuffer mBuffer;
553            std::vector<hwc_rect_t> mSurfaceDamage;
554
555            LatchedState<HWC2::BlendMode> mBlendMode;
556            LatchedState<hwc_color_t> mColor;
557            LatchedState<HWC2::Composition> mCompositionType;
558            LatchedState<hwc_rect_t> mDisplayFrame;
559            LatchedState<float> mPlaneAlpha;
560            LatchedState<const native_handle_t*> mSidebandStream;
561            LatchedState<hwc_frect_t> mSourceCrop;
562            LatchedState<HWC2::Transform> mTransform;
563            LatchedState<std::vector<hwc_rect_t>> mVisibleRegion;
564            uint32_t mZ;
565
566            DeferredFence mReleaseFence;
567
568            size_t mHwc1Id;
569            bool mHasUnsupportedDataspace;
570            bool mHasUnsupportedPlaneAlpha;
571    };
572
573    template <typename ...Args>
574    static int32_t callLayerFunction(hwc2_device_t* device,
575            hwc2_display_t displayId, hwc2_layer_t layerId,
576            HWC2::Error (Layer::*member)(Args...), Args... args) {
577        auto result = getAdapter(device)->getLayer(displayId, layerId);
578        auto error = std::get<HWC2::Error>(result);
579        if (error == HWC2::Error::None) {
580            auto layer = std::get<Layer*>(result);
581            error = ((*layer).*member)(std::forward<Args>(args)...);
582        }
583        return static_cast<int32_t>(error);
584    }
585
586    template <typename MF, MF memFunc, typename ...Args>
587    static int32_t layerHook(hwc2_device_t* device, hwc2_display_t displayId,
588            hwc2_layer_t layerId, Args... args) {
589        return HWC2On1Adapter::callLayerFunction(device, displayId, layerId,
590                memFunc, std::forward<Args>(args)...);
591    }
592
593    // Layer state functions
594
595    static int32_t setLayerBlendModeHook(hwc2_device_t* device,
596            hwc2_display_t display, hwc2_layer_t layer, int32_t intMode) {
597        auto mode = static_cast<HWC2::BlendMode>(intMode);
598        return callLayerFunction(device, display, layer,
599                &Layer::setBlendMode, mode);
600    }
601
602    static int32_t setLayerCompositionTypeHook(hwc2_device_t* device,
603            hwc2_display_t display, hwc2_layer_t layer, int32_t intType) {
604        auto type = static_cast<HWC2::Composition>(intType);
605        return callLayerFunction(device, display, layer,
606                &Layer::setCompositionType, type);
607    }
608
609    static int32_t setLayerDataspaceHook(hwc2_device_t* device,
610            hwc2_display_t display, hwc2_layer_t layer, int32_t intDataspace) {
611        auto dataspace = static_cast<android_dataspace_t>(intDataspace);
612        return callLayerFunction(device, display, layer, &Layer::setDataspace,
613                dataspace);
614    }
615
616    static int32_t setLayerTransformHook(hwc2_device_t* device,
617            hwc2_display_t display, hwc2_layer_t layer, int32_t intTransform) {
618        auto transform = static_cast<HWC2::Transform>(intTransform);
619        return callLayerFunction(device, display, layer, &Layer::setTransform,
620                transform);
621    }
622
623    static int32_t setLayerZOrderHook(hwc2_device_t* device,
624            hwc2_display_t display, hwc2_layer_t layer, uint32_t z) {
625        return callDisplayFunction(device, display, &Display::updateLayerZ,
626                layer, z);
627    }
628
629    // Adapter internals
630
631    void populateCapabilities();
632    Display* getDisplay(hwc2_display_t id);
633    std::tuple<Layer*, HWC2::Error> getLayer(hwc2_display_t displayId,
634            hwc2_layer_t layerId);
635    void populatePrimary();
636
637    bool prepareAllDisplays();
638    std::vector<struct hwc_display_contents_1*> mHwc1Contents;
639    HWC2::Error setAllDisplays();
640
641    void hwc1Invalidate();
642    void hwc1Vsync(int hwc1DisplayId, int64_t timestamp);
643    void hwc1Hotplug(int hwc1DisplayId, int connected);
644
645    // These are set in the constructor and before any asynchronous events are
646    // possible
647
648    struct hwc_composer_device_1* const mHwc1Device;
649    const uint8_t mHwc1MinorVersion;
650    bool mHwc1SupportsVirtualDisplays;
651
652    class Callbacks;
653    const std::unique_ptr<Callbacks> mHwc1Callbacks;
654
655    std::unordered_set<HWC2::Capability> mCapabilities;
656
657    // These are only accessed from the main SurfaceFlinger thread (not from
658    // callbacks or dump
659
660    std::map<hwc2_layer_t, std::shared_ptr<Layer>> mLayers;
661    std::shared_ptr<Display> mHwc1VirtualDisplay;
662
663    // These are potentially accessed from multiple threads, and are protected
664    // by this mutex. This needs to be recursive, since the HWC1 implementation
665    // can call back into the invalidate callback on the same thread that is
666    // calling prepare.
667    std::recursive_timed_mutex mStateMutex;
668
669    struct CallbackInfo {
670        hwc2_callback_data_t data;
671        hwc2_function_pointer_t pointer;
672    };
673    std::unordered_map<HWC2::Callback, CallbackInfo> mCallbacks;
674    bool mHasPendingInvalidate;
675    std::vector<std::pair<int, int64_t>> mPendingVsyncs;
676    std::vector<std::pair<int, int>> mPendingHotplugs;
677
678    std::map<hwc2_display_t, std::shared_ptr<Display>> mDisplays;
679    std::unordered_map<int, hwc2_display_t> mHwc1DisplayMap;
680};
681
682} // namespace android
683
684#endif
685