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drm_hwcomposer: refactor Worker
[android-x86/external-drm_hwcomposer.git] / drmhwctwo.cpp
1 /*
2  * Copyright (C) 2016 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 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
18 #define LOG_TAG "hwc-drm-two"
19
20 #include "drmdisplaycomposition.h"
21 #include "drmhwcomposer.h"
22 #include "drmhwctwo.h"
23 #include "platform.h"
24 #include "vsyncworker.h"
25
26 #include <inttypes.h>
27 #include <string>
28
29 #include <cutils/log.h>
30 #include <cutils/properties.h>
31 #include <hardware/hardware.h>
32 #include <hardware/hwcomposer2.h>
33
34 namespace android {
35
36 class DrmVsyncCallback : public VsyncCallback {
37  public:
38   DrmVsyncCallback(hwc2_callback_data_t data, hwc2_function_pointer_t hook)
39       : data_(data), hook_(hook) {
40   }
41
42   void Callback(int display, int64_t timestamp) {
43     auto hook = reinterpret_cast<HWC2_PFN_VSYNC>(hook_);
44     hook(data_, display, timestamp);
45   }
46
47  private:
48   hwc2_callback_data_t data_;
49   hwc2_function_pointer_t hook_;
50 };
51
52 DrmHwcTwo::DrmHwcTwo() {
53   common.tag = HARDWARE_DEVICE_TAG;
54   common.version = HWC_DEVICE_API_VERSION_2_0;
55   common.close = HookDevClose;
56   getCapabilities = HookDevGetCapabilities;
57   getFunction = HookDevGetFunction;
58 }
59
60 HWC2::Error DrmHwcTwo::Init() {
61   int ret = drm_.Init();
62   if (ret) {
63     ALOGE("Can't initialize drm object %d", ret);
64     return HWC2::Error::NoResources;
65   }
66
67   importer_.reset(Importer::CreateInstance(&drm_));
68   if (!importer_) {
69     ALOGE("Failed to create importer instance");
70     return HWC2::Error::NoResources;
71   }
72
73   ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
74                       (const hw_module_t **)&gralloc_);
75   if (ret) {
76     ALOGE("Failed to open gralloc module %d", ret);
77     return HWC2::Error::NoResources;
78   }
79
80   displays_.emplace(std::piecewise_construct,
81                     std::forward_as_tuple(HWC_DISPLAY_PRIMARY),
82                     std::forward_as_tuple(&drm_, importer_, gralloc_,
83                                           HWC_DISPLAY_PRIMARY,
84                                           HWC2::DisplayType::Physical));
85
86   DrmCrtc *crtc = drm_.GetCrtcForDisplay(static_cast<int>(HWC_DISPLAY_PRIMARY));
87   if (!crtc) {
88     ALOGE("Failed to get crtc for display %d",
89           static_cast<int>(HWC_DISPLAY_PRIMARY));
90     return HWC2::Error::BadDisplay;
91   }
92
93   std::vector<DrmPlane *> display_planes;
94   for (auto &plane : drm_.planes()) {
95     if (plane->GetCrtcSupported(*crtc))
96       display_planes.push_back(plane.get());
97   }
98   displays_.at(HWC_DISPLAY_PRIMARY).Init(&display_planes);
99   return HWC2::Error::None;
100 }
101
102 template <typename... Args>
103 static inline HWC2::Error unsupported(char const *func, Args... /*args*/) {
104   ALOGV("Unsupported function: %s", func);
105   return HWC2::Error::Unsupported;
106 }
107
108 static inline void supported(char const *func) {
109   ALOGV("Supported function: %s", func);
110 }
111
112 HWC2::Error DrmHwcTwo::CreateVirtualDisplay(uint32_t width, uint32_t height,
113                                             int32_t *format,
114                                             hwc2_display_t *display) {
115   // TODO: Implement virtual display
116   return unsupported(__func__, width, height, format, display);
117 }
118
119 HWC2::Error DrmHwcTwo::DestroyVirtualDisplay(hwc2_display_t display) {
120   // TODO: Implement virtual display
121   return unsupported(__func__, display);
122 }
123
124 void DrmHwcTwo::Dump(uint32_t *size, char *buffer) {
125   // TODO: Implement dump
126   unsupported(__func__, size, buffer);
127 }
128
129 uint32_t DrmHwcTwo::GetMaxVirtualDisplayCount() {
130   // TODO: Implement virtual display
131   unsupported(__func__);
132   return 0;
133 }
134
135 HWC2::Error DrmHwcTwo::RegisterCallback(int32_t descriptor,
136                                         hwc2_callback_data_t data,
137                                         hwc2_function_pointer_t function) {
138   supported(__func__);
139   auto callback = static_cast<HWC2::Callback>(descriptor);
140   callbacks_.emplace(callback, HwcCallback(data, function));
141
142   switch (callback) {
143     case HWC2::Callback::Hotplug: {
144       auto hotplug = reinterpret_cast<HWC2_PFN_HOTPLUG>(function);
145       hotplug(data, HWC_DISPLAY_PRIMARY,
146               static_cast<int32_t>(HWC2::Connection::Connected));
147       break;
148     }
149     case HWC2::Callback::Vsync: {
150       for (std::pair<const hwc2_display_t, DrmHwcTwo::HwcDisplay> &d :
151            displays_)
152         d.second.RegisterVsyncCallback(data, function);
153       break;
154     }
155     default:
156       break;
157   }
158   return HWC2::Error::None;
159 }
160
161 DrmHwcTwo::HwcDisplay::HwcDisplay(DrmResources *drm,
162                                   std::shared_ptr<Importer> importer,
163                                   const gralloc_module_t *gralloc,
164                                   hwc2_display_t handle, HWC2::DisplayType type)
165     : drm_(drm),
166       importer_(importer),
167       gralloc_(gralloc),
168       handle_(handle),
169       type_(type) {
170   supported(__func__);
171 }
172
173 HWC2::Error DrmHwcTwo::HwcDisplay::Init(std::vector<DrmPlane *> *planes) {
174   supported(__func__);
175   planner_ = Planner::CreateInstance(drm_);
176   if (!planner_) {
177     ALOGE("Failed to create planner instance for composition");
178     return HWC2::Error::NoResources;
179   }
180
181   int display = static_cast<int>(handle_);
182   int ret = compositor_.Init(drm_, display);
183   if (ret) {
184     ALOGE("Failed display compositor init for display %d (%d)", display, ret);
185     return HWC2::Error::NoResources;
186   }
187
188   // Split up the given display planes into primary and overlay to properly
189   // interface with the composition
190   char use_overlay_planes_prop[PROPERTY_VALUE_MAX];
191   property_get("hwc.drm.use_overlay_planes", use_overlay_planes_prop, "1");
192   bool use_overlay_planes = atoi(use_overlay_planes_prop);
193   for (auto &plane : *planes) {
194     if (plane->type() == DRM_PLANE_TYPE_PRIMARY)
195       primary_planes_.push_back(plane);
196     else if (use_overlay_planes && (plane)->type() == DRM_PLANE_TYPE_OVERLAY)
197       overlay_planes_.push_back(plane);
198   }
199
200   crtc_ = drm_->GetCrtcForDisplay(display);
201   if (!crtc_) {
202     ALOGE("Failed to get crtc for display %d", display);
203     return HWC2::Error::BadDisplay;
204   }
205
206   connector_ = drm_->GetConnectorForDisplay(display);
207   if (!connector_) {
208     ALOGE("Failed to get connector for display %d", display);
209     return HWC2::Error::BadDisplay;
210   }
211
212   // Fetch the number of modes from the display
213   uint32_t num_configs;
214   HWC2::Error err = GetDisplayConfigs(&num_configs, NULL);
215   if (err != HWC2::Error::None || !num_configs)
216     return err;
217
218   // Grab the first mode, we'll choose this as the active mode
219   // TODO: Should choose the preferred mode here
220   hwc2_config_t default_config;
221   num_configs = 1;
222   err = GetDisplayConfigs(&num_configs, &default_config);
223   if (err != HWC2::Error::None)
224     return err;
225
226   ret = vsync_worker_.Init(drm_, display);
227   if (ret) {
228     ALOGE("Failed to create event worker for d=%d %d\n", display, ret);
229     return HWC2::Error::BadDisplay;
230   }
231
232   return SetActiveConfig(default_config);
233 }
234
235 HWC2::Error DrmHwcTwo::HwcDisplay::RegisterVsyncCallback(
236     hwc2_callback_data_t data, hwc2_function_pointer_t func) {
237   supported(__func__);
238   auto callback = std::make_shared<DrmVsyncCallback>(data, func);
239   vsync_worker_.RegisterCallback(std::move(callback));
240   return HWC2::Error::None;
241 }
242
243 HWC2::Error DrmHwcTwo::HwcDisplay::AcceptDisplayChanges() {
244   supported(__func__);
245   uint32_t num_changes = 0;
246   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_)
247     l.second.accept_type_change();
248   return HWC2::Error::None;
249 }
250
251 HWC2::Error DrmHwcTwo::HwcDisplay::CreateLayer(hwc2_layer_t *layer) {
252   supported(__func__);
253   layers_.emplace(static_cast<hwc2_layer_t>(layer_idx_), HwcLayer());
254   *layer = static_cast<hwc2_layer_t>(layer_idx_);
255   ++layer_idx_;
256   return HWC2::Error::None;
257 }
258
259 HWC2::Error DrmHwcTwo::HwcDisplay::DestroyLayer(hwc2_layer_t layer) {
260   supported(__func__);
261   layers_.erase(layer);
262   return HWC2::Error::None;
263 }
264
265 HWC2::Error DrmHwcTwo::HwcDisplay::GetActiveConfig(hwc2_config_t *config) {
266   supported(__func__);
267   DrmMode const &mode = connector_->active_mode();
268   if (mode.id() == 0)
269     return HWC2::Error::BadConfig;
270
271   *config = mode.id();
272   return HWC2::Error::None;
273 }
274
275 HWC2::Error DrmHwcTwo::HwcDisplay::GetChangedCompositionTypes(
276     uint32_t *num_elements, hwc2_layer_t *layers, int32_t *types) {
277   supported(__func__);
278   uint32_t num_changes = 0;
279   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
280     if (l.second.type_changed()) {
281       if (layers && num_changes < *num_elements)
282         layers[num_changes] = l.first;
283       if (types && num_changes < *num_elements)
284         types[num_changes] = static_cast<int32_t>(l.second.validated_type());
285       ++num_changes;
286     }
287   }
288   if (!layers && !types)
289     *num_elements = num_changes;
290   return HWC2::Error::None;
291 }
292
293 HWC2::Error DrmHwcTwo::HwcDisplay::GetClientTargetSupport(uint32_t width,
294                                                           uint32_t height,
295                                                           int32_t /*format*/,
296                                                           int32_t dataspace) {
297   supported(__func__);
298   std::pair<uint32_t, uint32_t> min = drm_->min_resolution();
299   std::pair<uint32_t, uint32_t> max = drm_->max_resolution();
300
301   if (width < min.first || height < min.second)
302     return HWC2::Error::Unsupported;
303
304   if (width > max.first || height > max.second)
305     return HWC2::Error::Unsupported;
306
307   if (dataspace != HAL_DATASPACE_UNKNOWN &&
308       dataspace != HAL_DATASPACE_STANDARD_UNSPECIFIED)
309     return HWC2::Error::Unsupported;
310
311   // TODO: Validate format can be handled by either GL or planes
312   return HWC2::Error::None;
313 }
314
315 HWC2::Error DrmHwcTwo::HwcDisplay::GetColorModes(uint32_t *num_modes,
316                                                  int32_t *modes) {
317   supported(__func__);
318   // TODO: android_color_mode_t isn't defined yet!
319   return unsupported(__func__, num_modes, modes);
320 }
321
322 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayAttribute(hwc2_config_t config,
323                                                        int32_t attribute_in,
324                                                        int32_t *value) {
325   supported(__func__);
326   auto mode =
327       std::find_if(connector_->modes().begin(), connector_->modes().end(),
328                    [config](DrmMode const &m) { return m.id() == config; });
329   if (mode == connector_->modes().end()) {
330     ALOGE("Could not find active mode for %d", config);
331     return HWC2::Error::BadConfig;
332   }
333
334   static const int32_t kUmPerInch = 25400;
335   uint32_t mm_width = connector_->mm_width();
336   uint32_t mm_height = connector_->mm_height();
337   auto attribute = static_cast<HWC2::Attribute>(attribute_in);
338   switch (attribute) {
339     case HWC2::Attribute::Width:
340       *value = mode->h_display();
341       break;
342     case HWC2::Attribute::Height:
343       *value = mode->v_display();
344       break;
345     case HWC2::Attribute::VsyncPeriod:
346       // in nanoseconds
347       *value = 1000 * 1000 * 1000 / mode->v_refresh();
348       break;
349     case HWC2::Attribute::DpiX:
350       // Dots per 1000 inches
351       *value = mm_width ? (mode->h_display() * kUmPerInch) / mm_width : -1;
352       break;
353     case HWC2::Attribute::DpiY:
354       // Dots per 1000 inches
355       *value = mm_height ? (mode->v_display() * kUmPerInch) / mm_height : -1;
356       break;
357     default:
358       *value = -1;
359       return HWC2::Error::BadConfig;
360   }
361   return HWC2::Error::None;
362 }
363
364 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayConfigs(uint32_t *num_configs,
365                                                      hwc2_config_t *configs) {
366   supported(__func__);
367   // Since this callback is normally invoked twice (once to get the count, and
368   // once to populate configs), we don't really want to read the edid
369   // redundantly. Instead, only update the modes on the first invocation. While
370   // it's possible this will result in stale modes, it'll all come out in the
371   // wash when we try to set the active config later.
372   if (!configs) {
373     int ret = connector_->UpdateModes();
374     if (ret) {
375       ALOGE("Failed to update display modes %d", ret);
376       return HWC2::Error::BadDisplay;
377     }
378   }
379
380   auto num_modes = static_cast<uint32_t>(connector_->modes().size());
381   if (!configs) {
382     *num_configs = num_modes;
383     return HWC2::Error::None;
384   }
385
386   uint32_t idx = 0;
387   for (const DrmMode &mode : connector_->modes()) {
388     if (idx >= *num_configs)
389       break;
390     configs[idx++] = mode.id();
391   }
392   *num_configs = idx;
393   return HWC2::Error::None;
394 }
395
396 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayName(uint32_t *size, char *name) {
397   supported(__func__);
398   std::ostringstream stream;
399   stream << "display-" << connector_->id();
400   std::string string = stream.str();
401   size_t length = string.length();
402   if (!name) {
403     *size = length;
404     return HWC2::Error::None;
405   }
406
407   *size = std::min<uint32_t>(static_cast<uint32_t>(length - 1), *size);
408   strncpy(name, string.c_str(), *size);
409   return HWC2::Error::None;
410 }
411
412 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayRequests(int32_t *display_requests,
413                                                       uint32_t *num_elements,
414                                                       hwc2_layer_t *layers,
415                                                       int32_t *layer_requests) {
416   supported(__func__);
417   // TODO: I think virtual display should request
418   //      HWC2_DISPLAY_REQUEST_WRITE_CLIENT_TARGET_TO_OUTPUT here
419   unsupported(__func__, display_requests, num_elements, layers, layer_requests);
420   *num_elements = 0;
421   return HWC2::Error::None;
422 }
423
424 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayType(int32_t *type) {
425   supported(__func__);
426   *type = static_cast<int32_t>(type_);
427   return HWC2::Error::None;
428 }
429
430 HWC2::Error DrmHwcTwo::HwcDisplay::GetDozeSupport(int32_t *support) {
431   supported(__func__);
432   *support = 0;
433   return HWC2::Error::None;
434 }
435
436 HWC2::Error DrmHwcTwo::HwcDisplay::GetHdrCapabilities(
437     uint32_t *num_types, int32_t */*types*/, float */*max_luminance*/,
438     float */*max_average_luminance*/, float */*min_luminance*/) {
439   supported(__func__);
440   *num_types = 0;
441   return HWC2::Error::None;
442 }
443
444 HWC2::Error DrmHwcTwo::HwcDisplay::GetReleaseFences(uint32_t *num_elements,
445                                                     hwc2_layer_t *layers,
446                                                     int32_t *fences) {
447   supported(__func__);
448   uint32_t num_layers = 0;
449
450   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
451     ++num_layers;
452     if (layers == NULL || fences == NULL) {
453       continue;
454     } else if (num_layers > *num_elements) {
455       ALOGW("Overflow num_elements %d/%d", num_layers, *num_elements);
456       return HWC2::Error::None;
457     }
458
459     layers[num_layers - 1] = l.first;
460     fences[num_layers - 1] = l.second.take_release_fence();
461   }
462   *num_elements = num_layers;
463   return HWC2::Error::None;
464 }
465
466 void DrmHwcTwo::HwcDisplay::AddFenceToRetireFence(int fd) {
467   supported(__func__);
468   if (fd < 0)
469     return;
470
471   if (next_retire_fence_.get() >= 0) {
472     int old_fence = next_retire_fence_.get();
473     next_retire_fence_.Set(sync_merge("dc_retire", old_fence, fd));
474   } else {
475     next_retire_fence_.Set(dup(fd));
476   }
477 }
478
479 HWC2::Error DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) {
480   supported(__func__);
481   std::vector<DrmCompositionDisplayLayersMap> layers_map;
482   layers_map.emplace_back();
483   DrmCompositionDisplayLayersMap &map = layers_map.back();
484
485   map.display = static_cast<int>(handle_);
486   map.geometry_changed = true;  // TODO: Fix this
487
488   // order the layers by z-order
489   bool use_client_layer = false;
490   uint32_t client_z_order = 0;
491   std::map<uint32_t, DrmHwcTwo::HwcLayer *> z_map;
492   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
493     switch (l.second.validated_type()) {
494       case HWC2::Composition::Device:
495         z_map.emplace(std::make_pair(l.second.z_order(), &l.second));
496         break;
497       case HWC2::Composition::Client:
498         // Place it at the z_order of the highest client layer
499         use_client_layer = true;
500         client_z_order = std::max(client_z_order, l.second.z_order());
501         break;
502       default:
503         continue;
504     }
505   }
506   if (use_client_layer)
507     z_map.emplace(std::make_pair(client_z_order, &client_layer_));
508
509   // now that they're ordered by z, add them to the composition
510   for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map) {
511     DrmHwcLayer layer;
512     l.second->PopulateDrmLayer(&layer);
513     int ret = layer.ImportBuffer(importer_.get(), gralloc_);
514     if (ret) {
515       ALOGE("Failed to import layer, ret=%d", ret);
516       return HWC2::Error::NoResources;
517     }
518     map.layers.emplace_back(std::move(layer));
519   }
520   if (map.layers.empty()) {
521     *retire_fence = -1;
522     return HWC2::Error::None;
523   }
524
525   std::unique_ptr<DrmDisplayComposition> composition =
526       compositor_.CreateComposition();
527   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
528
529   // TODO: Don't always assume geometry changed
530   int ret = composition->SetLayers(map.layers.data(), map.layers.size(), true);
531   if (ret) {
532     ALOGE("Failed to set layers in the composition ret=%d", ret);
533     return HWC2::Error::BadLayer;
534   }
535
536   std::vector<DrmPlane *> primary_planes(primary_planes_);
537   std::vector<DrmPlane *> overlay_planes(overlay_planes_);
538   ret = composition->Plan(compositor_.squash_state(), &primary_planes,
539                          &overlay_planes);
540   if (ret) {
541     ALOGE("Failed to plan the composition ret=%d", ret);
542     return HWC2::Error::BadConfig;
543   }
544
545   // Disable the planes we're not using
546   for (auto i = primary_planes.begin(); i != primary_planes.end();) {
547     composition->AddPlaneDisable(*i);
548     i = primary_planes.erase(i);
549   }
550   for (auto i = overlay_planes.begin(); i != overlay_planes.end();) {
551     composition->AddPlaneDisable(*i);
552     i = overlay_planes.erase(i);
553   }
554
555   ret = compositor_.QueueComposition(std::move(composition));
556   if (ret) {
557     ALOGE("Failed to apply the frame composition ret=%d", ret);
558     return HWC2::Error::BadParameter;
559   }
560
561   // Now that the release fences have been generated by the compositor, make
562   // sure they're managed properly
563   for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map) {
564     l.second->manage_release_fence();
565     AddFenceToRetireFence(l.second->release_fence());
566   }
567
568   // The retire fence returned here is for the last frame, so return it and
569   // promote the next retire fence
570   *retire_fence = retire_fence_.Release();
571   retire_fence_ = std::move(next_retire_fence_);
572
573   ++frame_no_;
574   return HWC2::Error::None;
575 }
576
577 HWC2::Error DrmHwcTwo::HwcDisplay::SetActiveConfig(hwc2_config_t config) {
578   supported(__func__);
579   auto mode =
580       std::find_if(connector_->modes().begin(), connector_->modes().end(),
581                    [config](DrmMode const &m) { return m.id() == config; });
582   if (mode == connector_->modes().end()) {
583     ALOGE("Could not find active mode for %d", config);
584     return HWC2::Error::BadConfig;
585   }
586
587   std::unique_ptr<DrmDisplayComposition> composition =
588       compositor_.CreateComposition();
589   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
590   int ret = composition->SetDisplayMode(*mode);
591   ret = compositor_.QueueComposition(std::move(composition));
592   if (ret) {
593     ALOGE("Failed to queue dpms composition on %d", ret);
594     return HWC2::Error::BadConfig;
595   }
596   if (connector_->active_mode().id() == 0)
597     connector_->set_active_mode(*mode);
598
599   // Setup the client layer's dimensions
600   hwc_rect_t display_frame = {.left = 0,
601                               .top = 0,
602                               .right = static_cast<int>(mode->h_display()),
603                               .bottom = static_cast<int>(mode->v_display())};
604   client_layer_.SetLayerDisplayFrame(display_frame);
605   hwc_frect_t source_crop = {.left = 0.0f,
606                              .top = 0.0f,
607                              .right = mode->h_display() + 0.0f,
608                              .bottom = mode->v_display() + 0.0f};
609   client_layer_.SetLayerSourceCrop(source_crop);
610
611   return HWC2::Error::None;
612 }
613
614 HWC2::Error DrmHwcTwo::HwcDisplay::SetClientTarget(buffer_handle_t target,
615                                                    int32_t acquire_fence,
616                                                    int32_t dataspace,
617                                                    hwc_region_t damage) {
618   supported(__func__);
619   UniqueFd uf(acquire_fence);
620
621   client_layer_.set_buffer(target);
622   client_layer_.set_acquire_fence(uf.get());
623   client_layer_.SetLayerDataspace(dataspace);
624   return HWC2::Error::None;
625 }
626
627 HWC2::Error DrmHwcTwo::HwcDisplay::SetColorMode(int32_t mode) {
628   supported(__func__);
629   // TODO: android_color_mode_t isn't defined yet!
630   return unsupported(__func__, mode);
631 }
632
633 HWC2::Error DrmHwcTwo::HwcDisplay::SetColorTransform(const float *matrix,
634                                                      int32_t hint) {
635   supported(__func__);
636   // TODO: Force client composition if we get this
637   return unsupported(__func__, matrix, hint);
638 }
639
640 HWC2::Error DrmHwcTwo::HwcDisplay::SetOutputBuffer(buffer_handle_t buffer,
641                                                    int32_t release_fence) {
642   supported(__func__);
643   // TODO: Need virtual display support
644   return unsupported(__func__, buffer, release_fence);
645 }
646
647 HWC2::Error DrmHwcTwo::HwcDisplay::SetPowerMode(int32_t mode_in) {
648   supported(__func__);
649   uint64_t dpms_value = 0;
650   auto mode = static_cast<HWC2::PowerMode>(mode_in);
651   switch (mode) {
652     case HWC2::PowerMode::Off:
653       dpms_value = DRM_MODE_DPMS_OFF;
654       break;
655     case HWC2::PowerMode::On:
656       dpms_value = DRM_MODE_DPMS_ON;
657       break;
658     default:
659       ALOGI("Power mode %d is unsupported\n", mode);
660       return HWC2::Error::Unsupported;
661   };
662
663   std::unique_ptr<DrmDisplayComposition> composition =
664       compositor_.CreateComposition();
665   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
666   composition->SetDpmsMode(dpms_value);
667   int ret = compositor_.QueueComposition(std::move(composition));
668   if (ret) {
669     ALOGE("Failed to apply the dpms composition ret=%d", ret);
670     return HWC2::Error::BadParameter;
671   }
672   return HWC2::Error::None;
673 }
674
675 HWC2::Error DrmHwcTwo::HwcDisplay::SetVsyncEnabled(int32_t enabled) {
676   supported(__func__);
677   vsync_worker_.VSyncControl(enabled);
678   return HWC2::Error::None;
679 }
680
681 HWC2::Error DrmHwcTwo::HwcDisplay::ValidateDisplay(uint32_t *num_types,
682                                                    uint32_t *num_requests) {
683   supported(__func__);
684   *num_types = 0;
685   *num_requests = 0;
686   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
687     DrmHwcTwo::HwcLayer &layer = l.second;
688     switch (layer.sf_type()) {
689       case HWC2::Composition::SolidColor:
690       case HWC2::Composition::Cursor:
691       case HWC2::Composition::Sideband:
692         layer.set_validated_type(HWC2::Composition::Client);
693         ++*num_types;
694         break;
695       default:
696         layer.set_validated_type(layer.sf_type());
697         break;
698     }
699   }
700   return HWC2::Error::None;
701 }
702
703 HWC2::Error DrmHwcTwo::HwcLayer::SetCursorPosition(int32_t x, int32_t y) {
704   supported(__func__);
705   // TODO: Implement proper cursor support
706   return unsupported(__func__, x, y);
707 }
708
709 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerBlendMode(int32_t mode) {
710   supported(__func__);
711   blending_ = static_cast<HWC2::BlendMode>(mode);
712   return HWC2::Error::None;
713 }
714
715 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerBuffer(buffer_handle_t buffer,
716                                                 int32_t acquire_fence) {
717   supported(__func__);
718   UniqueFd uf(acquire_fence);
719
720   // The buffer and acquire_fence are handled elsewhere
721   if (sf_type_ == HWC2::Composition::Client ||
722       sf_type_ == HWC2::Composition::Sideband ||
723       sf_type_ == HWC2::Composition::SolidColor)
724     return HWC2::Error::None;
725
726   set_buffer(buffer);
727   set_acquire_fence(uf.get());
728   return HWC2::Error::None;
729 }
730
731 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerColor(hwc_color_t color) {
732   // TODO: Punt to client composition here?
733   return unsupported(__func__, color);
734 }
735
736 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerCompositionType(int32_t type) {
737   sf_type_ = static_cast<HWC2::Composition>(type);
738   return HWC2::Error::None;
739 }
740
741 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerDataspace(int32_t dataspace) {
742   supported(__func__);
743   dataspace_ = static_cast<android_dataspace_t>(dataspace);
744   return HWC2::Error::None;
745 }
746
747 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerDisplayFrame(hwc_rect_t frame) {
748   supported(__func__);
749   display_frame_ = frame;
750   return HWC2::Error::None;
751 }
752
753 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerPlaneAlpha(float alpha) {
754   supported(__func__);
755   alpha_ = alpha;
756   return HWC2::Error::None;
757 }
758
759 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSidebandStream(
760     const native_handle_t *stream) {
761   supported(__func__);
762   // TODO: We don't support sideband
763   return unsupported(__func__, stream);
764 }
765
766 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSourceCrop(hwc_frect_t crop) {
767   supported(__func__);
768   source_crop_ = crop;
769   return HWC2::Error::None;
770 }
771
772 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSurfaceDamage(hwc_region_t damage) {
773   supported(__func__);
774   // TODO: We don't use surface damage, marking as unsupported
775   unsupported(__func__, damage);
776   return HWC2::Error::None;
777 }
778
779 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerTransform(int32_t transform) {
780   supported(__func__);
781   transform_ = static_cast<HWC2::Transform>(transform);
782   return HWC2::Error::None;
783 }
784
785 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerVisibleRegion(hwc_region_t visible) {
786   supported(__func__);
787   // TODO: We don't use this information, marking as unsupported
788   unsupported(__func__, visible);
789   return HWC2::Error::None;
790 }
791
792 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerZOrder(uint32_t order) {
793   supported(__func__);
794   z_order_ = order;
795   return HWC2::Error::None;
796 }
797
798 void DrmHwcTwo::HwcLayer::PopulateDrmLayer(DrmHwcLayer *layer) {
799   supported(__func__);
800   switch (blending_) {
801     case HWC2::BlendMode::None:
802       layer->blending = DrmHwcBlending::kNone;
803       break;
804     case HWC2::BlendMode::Premultiplied:
805       layer->blending = DrmHwcBlending::kPreMult;
806       break;
807     case HWC2::BlendMode::Coverage:
808       layer->blending = DrmHwcBlending::kCoverage;
809       break;
810     default:
811       ALOGE("Unknown blending mode b=%d", blending_);
812       layer->blending = DrmHwcBlending::kNone;
813       break;
814   }
815
816   OutputFd release_fence = release_fence_output();
817
818   layer->sf_handle = buffer_;
819   layer->acquire_fence = acquire_fence_.Release();
820   layer->release_fence = std::move(release_fence);
821   layer->SetDisplayFrame(display_frame_);
822   layer->alpha = static_cast<uint8_t>(255.0f * alpha_ + 0.5f);
823   layer->SetSourceCrop(source_crop_);
824   layer->SetTransform(static_cast<int32_t>(transform_));
825 }
826
827 // static
828 int DrmHwcTwo::HookDevClose(hw_device_t * /*dev*/) {
829   unsupported(__func__);
830   return 0;
831 }
832
833 // static
834 void DrmHwcTwo::HookDevGetCapabilities(hwc2_device_t * /*dev*/,
835                                        uint32_t *out_count,
836                                        int32_t * /*out_capabilities*/) {
837   supported(__func__);
838   *out_count = 0;
839 }
840
841 // static
842 hwc2_function_pointer_t DrmHwcTwo::HookDevGetFunction(
843     struct hwc2_device * /*dev*/, int32_t descriptor) {
844   supported(__func__);
845   auto func = static_cast<HWC2::FunctionDescriptor>(descriptor);
846   switch (func) {
847     // Device functions
848     case HWC2::FunctionDescriptor::CreateVirtualDisplay:
849       return ToHook<HWC2_PFN_CREATE_VIRTUAL_DISPLAY>(
850           DeviceHook<int32_t, decltype(&DrmHwcTwo::CreateVirtualDisplay),
851                      &DrmHwcTwo::CreateVirtualDisplay, uint32_t, uint32_t,
852                      int32_t*, hwc2_display_t *>);
853     case HWC2::FunctionDescriptor::DestroyVirtualDisplay:
854       return ToHook<HWC2_PFN_DESTROY_VIRTUAL_DISPLAY>(
855           DeviceHook<int32_t, decltype(&DrmHwcTwo::DestroyVirtualDisplay),
856                      &DrmHwcTwo::DestroyVirtualDisplay, hwc2_display_t>);
857     case HWC2::FunctionDescriptor::Dump:
858       return ToHook<HWC2_PFN_DUMP>(
859           DeviceHook<void, decltype(&DrmHwcTwo::Dump), &DrmHwcTwo::Dump,
860                      uint32_t *, char *>);
861     case HWC2::FunctionDescriptor::GetMaxVirtualDisplayCount:
862       return ToHook<HWC2_PFN_GET_MAX_VIRTUAL_DISPLAY_COUNT>(
863           DeviceHook<uint32_t, decltype(&DrmHwcTwo::GetMaxVirtualDisplayCount),
864                      &DrmHwcTwo::GetMaxVirtualDisplayCount>);
865     case HWC2::FunctionDescriptor::RegisterCallback:
866       return ToHook<HWC2_PFN_REGISTER_CALLBACK>(
867           DeviceHook<int32_t, decltype(&DrmHwcTwo::RegisterCallback),
868                      &DrmHwcTwo::RegisterCallback, int32_t,
869                      hwc2_callback_data_t, hwc2_function_pointer_t>);
870
871     // Display functions
872     case HWC2::FunctionDescriptor::AcceptDisplayChanges:
873       return ToHook<HWC2_PFN_ACCEPT_DISPLAY_CHANGES>(
874           DisplayHook<decltype(&HwcDisplay::AcceptDisplayChanges),
875                       &HwcDisplay::AcceptDisplayChanges>);
876     case HWC2::FunctionDescriptor::CreateLayer:
877       return ToHook<HWC2_PFN_CREATE_LAYER>(
878           DisplayHook<decltype(&HwcDisplay::CreateLayer),
879                       &HwcDisplay::CreateLayer, hwc2_layer_t *>);
880     case HWC2::FunctionDescriptor::DestroyLayer:
881       return ToHook<HWC2_PFN_DESTROY_LAYER>(
882           DisplayHook<decltype(&HwcDisplay::DestroyLayer),
883                       &HwcDisplay::DestroyLayer, hwc2_layer_t>);
884     case HWC2::FunctionDescriptor::GetActiveConfig:
885       return ToHook<HWC2_PFN_GET_ACTIVE_CONFIG>(
886           DisplayHook<decltype(&HwcDisplay::GetActiveConfig),
887                       &HwcDisplay::GetActiveConfig, hwc2_config_t *>);
888     case HWC2::FunctionDescriptor::GetChangedCompositionTypes:
889       return ToHook<HWC2_PFN_GET_CHANGED_COMPOSITION_TYPES>(
890           DisplayHook<decltype(&HwcDisplay::GetChangedCompositionTypes),
891                       &HwcDisplay::GetChangedCompositionTypes, uint32_t *,
892                       hwc2_layer_t *, int32_t *>);
893     case HWC2::FunctionDescriptor::GetClientTargetSupport:
894       return ToHook<HWC2_PFN_GET_CLIENT_TARGET_SUPPORT>(
895           DisplayHook<decltype(&HwcDisplay::GetClientTargetSupport),
896                       &HwcDisplay::GetClientTargetSupport, uint32_t, uint32_t,
897                       int32_t, int32_t>);
898     case HWC2::FunctionDescriptor::GetColorModes:
899       return ToHook<HWC2_PFN_GET_COLOR_MODES>(
900           DisplayHook<decltype(&HwcDisplay::GetColorModes),
901                       &HwcDisplay::GetColorModes, uint32_t *, int32_t *>);
902     case HWC2::FunctionDescriptor::GetDisplayAttribute:
903       return ToHook<HWC2_PFN_GET_DISPLAY_ATTRIBUTE>(DisplayHook<
904           decltype(&HwcDisplay::GetDisplayAttribute),
905           &HwcDisplay::GetDisplayAttribute, hwc2_config_t, int32_t, int32_t *>);
906     case HWC2::FunctionDescriptor::GetDisplayConfigs:
907       return ToHook<HWC2_PFN_GET_DISPLAY_CONFIGS>(DisplayHook<
908           decltype(&HwcDisplay::GetDisplayConfigs),
909           &HwcDisplay::GetDisplayConfigs, uint32_t *, hwc2_config_t *>);
910     case HWC2::FunctionDescriptor::GetDisplayName:
911       return ToHook<HWC2_PFN_GET_DISPLAY_NAME>(
912           DisplayHook<decltype(&HwcDisplay::GetDisplayName),
913                       &HwcDisplay::GetDisplayName, uint32_t *, char *>);
914     case HWC2::FunctionDescriptor::GetDisplayRequests:
915       return ToHook<HWC2_PFN_GET_DISPLAY_REQUESTS>(
916           DisplayHook<decltype(&HwcDisplay::GetDisplayRequests),
917                       &HwcDisplay::GetDisplayRequests, int32_t *, uint32_t *,
918                       hwc2_layer_t *, int32_t *>);
919     case HWC2::FunctionDescriptor::GetDisplayType:
920       return ToHook<HWC2_PFN_GET_DISPLAY_TYPE>(
921           DisplayHook<decltype(&HwcDisplay::GetDisplayType),
922                       &HwcDisplay::GetDisplayType, int32_t *>);
923     case HWC2::FunctionDescriptor::GetDozeSupport:
924       return ToHook<HWC2_PFN_GET_DOZE_SUPPORT>(
925           DisplayHook<decltype(&HwcDisplay::GetDozeSupport),
926                       &HwcDisplay::GetDozeSupport, int32_t *>);
927     case HWC2::FunctionDescriptor::GetHdrCapabilities:
928       return ToHook<HWC2_PFN_GET_HDR_CAPABILITIES>(
929           DisplayHook<decltype(&HwcDisplay::GetHdrCapabilities),
930                       &HwcDisplay::GetHdrCapabilities, uint32_t *, int32_t *,
931                       float *, float *, float *>);
932     case HWC2::FunctionDescriptor::GetReleaseFences:
933       return ToHook<HWC2_PFN_GET_RELEASE_FENCES>(
934           DisplayHook<decltype(&HwcDisplay::GetReleaseFences),
935                       &HwcDisplay::GetReleaseFences, uint32_t *, hwc2_layer_t *,
936                       int32_t *>);
937     case HWC2::FunctionDescriptor::PresentDisplay:
938       return ToHook<HWC2_PFN_PRESENT_DISPLAY>(
939           DisplayHook<decltype(&HwcDisplay::PresentDisplay),
940                       &HwcDisplay::PresentDisplay, int32_t *>);
941     case HWC2::FunctionDescriptor::SetActiveConfig:
942       return ToHook<HWC2_PFN_SET_ACTIVE_CONFIG>(
943           DisplayHook<decltype(&HwcDisplay::SetActiveConfig),
944                       &HwcDisplay::SetActiveConfig, hwc2_config_t>);
945     case HWC2::FunctionDescriptor::SetClientTarget:
946       return ToHook<HWC2_PFN_SET_CLIENT_TARGET>(DisplayHook<
947           decltype(&HwcDisplay::SetClientTarget), &HwcDisplay::SetClientTarget,
948           buffer_handle_t, int32_t, int32_t, hwc_region_t>);
949     case HWC2::FunctionDescriptor::SetColorMode:
950       return ToHook<HWC2_PFN_SET_COLOR_MODE>(
951           DisplayHook<decltype(&HwcDisplay::SetColorMode),
952                       &HwcDisplay::SetColorMode, int32_t>);
953     case HWC2::FunctionDescriptor::SetColorTransform:
954       return ToHook<HWC2_PFN_SET_COLOR_TRANSFORM>(
955           DisplayHook<decltype(&HwcDisplay::SetColorTransform),
956                       &HwcDisplay::SetColorTransform, const float *, int32_t>);
957     case HWC2::FunctionDescriptor::SetOutputBuffer:
958       return ToHook<HWC2_PFN_SET_OUTPUT_BUFFER>(
959           DisplayHook<decltype(&HwcDisplay::SetOutputBuffer),
960                       &HwcDisplay::SetOutputBuffer, buffer_handle_t, int32_t>);
961     case HWC2::FunctionDescriptor::SetPowerMode:
962       return ToHook<HWC2_PFN_SET_POWER_MODE>(
963           DisplayHook<decltype(&HwcDisplay::SetPowerMode),
964                       &HwcDisplay::SetPowerMode, int32_t>);
965     case HWC2::FunctionDescriptor::SetVsyncEnabled:
966       return ToHook<HWC2_PFN_SET_VSYNC_ENABLED>(
967           DisplayHook<decltype(&HwcDisplay::SetVsyncEnabled),
968                       &HwcDisplay::SetVsyncEnabled, int32_t>);
969     case HWC2::FunctionDescriptor::ValidateDisplay:
970       return ToHook<HWC2_PFN_VALIDATE_DISPLAY>(
971           DisplayHook<decltype(&HwcDisplay::ValidateDisplay),
972                       &HwcDisplay::ValidateDisplay, uint32_t *, uint32_t *>);
973
974     // Layer functions
975     case HWC2::FunctionDescriptor::SetCursorPosition:
976       return ToHook<HWC2_PFN_SET_CURSOR_POSITION>(
977           LayerHook<decltype(&HwcLayer::SetCursorPosition),
978                     &HwcLayer::SetCursorPosition, int32_t, int32_t>);
979     case HWC2::FunctionDescriptor::SetLayerBlendMode:
980       return ToHook<HWC2_PFN_SET_LAYER_BLEND_MODE>(
981           LayerHook<decltype(&HwcLayer::SetLayerBlendMode),
982                     &HwcLayer::SetLayerBlendMode, int32_t>);
983     case HWC2::FunctionDescriptor::SetLayerBuffer:
984       return ToHook<HWC2_PFN_SET_LAYER_BUFFER>(
985           LayerHook<decltype(&HwcLayer::SetLayerBuffer),
986                     &HwcLayer::SetLayerBuffer, buffer_handle_t, int32_t>);
987     case HWC2::FunctionDescriptor::SetLayerColor:
988       return ToHook<HWC2_PFN_SET_LAYER_COLOR>(
989           LayerHook<decltype(&HwcLayer::SetLayerColor),
990                     &HwcLayer::SetLayerColor, hwc_color_t>);
991     case HWC2::FunctionDescriptor::SetLayerCompositionType:
992       return ToHook<HWC2_PFN_SET_LAYER_COMPOSITION_TYPE>(
993           LayerHook<decltype(&HwcLayer::SetLayerCompositionType),
994                     &HwcLayer::SetLayerCompositionType, int32_t>);
995     case HWC2::FunctionDescriptor::SetLayerDataspace:
996       return ToHook<HWC2_PFN_SET_LAYER_DATASPACE>(
997           LayerHook<decltype(&HwcLayer::SetLayerDataspace),
998                     &HwcLayer::SetLayerDataspace, int32_t>);
999     case HWC2::FunctionDescriptor::SetLayerDisplayFrame:
1000       return ToHook<HWC2_PFN_SET_LAYER_DISPLAY_FRAME>(
1001           LayerHook<decltype(&HwcLayer::SetLayerDisplayFrame),
1002                     &HwcLayer::SetLayerDisplayFrame, hwc_rect_t>);
1003     case HWC2::FunctionDescriptor::SetLayerPlaneAlpha:
1004       return ToHook<HWC2_PFN_SET_LAYER_PLANE_ALPHA>(
1005           LayerHook<decltype(&HwcLayer::SetLayerPlaneAlpha),
1006                     &HwcLayer::SetLayerPlaneAlpha, float>);
1007     case HWC2::FunctionDescriptor::SetLayerSidebandStream:
1008       return ToHook<HWC2_PFN_SET_LAYER_SIDEBAND_STREAM>(LayerHook<
1009           decltype(&HwcLayer::SetLayerSidebandStream),
1010           &HwcLayer::SetLayerSidebandStream, const native_handle_t *>);
1011     case HWC2::FunctionDescriptor::SetLayerSourceCrop:
1012       return ToHook<HWC2_PFN_SET_LAYER_SOURCE_CROP>(
1013           LayerHook<decltype(&HwcLayer::SetLayerSourceCrop),
1014                     &HwcLayer::SetLayerSourceCrop, hwc_frect_t>);
1015     case HWC2::FunctionDescriptor::SetLayerSurfaceDamage:
1016       return ToHook<HWC2_PFN_SET_LAYER_SURFACE_DAMAGE>(
1017           LayerHook<decltype(&HwcLayer::SetLayerSurfaceDamage),
1018                     &HwcLayer::SetLayerSurfaceDamage, hwc_region_t>);
1019     case HWC2::FunctionDescriptor::SetLayerTransform:
1020       return ToHook<HWC2_PFN_SET_LAYER_TRANSFORM>(
1021           LayerHook<decltype(&HwcLayer::SetLayerTransform),
1022                     &HwcLayer::SetLayerTransform, int32_t>);
1023     case HWC2::FunctionDescriptor::SetLayerVisibleRegion:
1024       return ToHook<HWC2_PFN_SET_LAYER_VISIBLE_REGION>(
1025           LayerHook<decltype(&HwcLayer::SetLayerVisibleRegion),
1026                     &HwcLayer::SetLayerVisibleRegion, hwc_region_t>);
1027     case HWC2::FunctionDescriptor::SetLayerZOrder:
1028       return ToHook<HWC2_PFN_SET_LAYER_Z_ORDER>(
1029           LayerHook<decltype(&HwcLayer::SetLayerZOrder),
1030                     &HwcLayer::SetLayerZOrder, uint32_t>);
1031     case HWC2::FunctionDescriptor::Invalid:
1032     default:
1033       return NULL;
1034   }
1035 }
1036
1037 // static
1038 int DrmHwcTwo::HookDevOpen(const struct hw_module_t *module, const char *name,
1039                            struct hw_device_t **dev) {
1040   supported(__func__);
1041   if (strcmp(name, HWC_HARDWARE_COMPOSER)) {
1042     ALOGE("Invalid module name- %s", name);
1043     return -EINVAL;
1044   }
1045
1046   std::unique_ptr<DrmHwcTwo> ctx(new DrmHwcTwo());
1047   if (!ctx) {
1048     ALOGE("Failed to allocate DrmHwcTwo");
1049     return -ENOMEM;
1050   }
1051
1052   HWC2::Error err = ctx->Init();
1053   if (err != HWC2::Error::None) {
1054     ALOGE("Failed to initialize DrmHwcTwo err=%d\n", err);
1055     return -EINVAL;
1056   }
1057
1058   ctx->common.module = const_cast<hw_module_t *>(module);
1059   *dev = &ctx->common;
1060   ctx.release();
1061   return 0;
1062 }
1063 }
1064
1065 static struct hw_module_methods_t hwc2_module_methods = {
1066     .open = android::DrmHwcTwo::HookDevOpen,
1067 };
1068
1069 hw_module_t HAL_MODULE_INFO_SYM = {
1070     .tag = HARDWARE_MODULE_TAG,
1071     .module_api_version = HARDWARE_MODULE_API_VERSION(2, 0),
1072     .id = HWC_HARDWARE_MODULE_ID,
1073     .name = "DrmHwcTwo module",
1074     .author = "The Android Open Source Project",
1075     .methods = &hwc2_module_methods,
1076     .dso = NULL,
1077     .reserved = {0},
1078 };