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drm_hwcomposer: enumerate additional formats for tegra downscale limits
[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   if (!modes)
319     *num_modes = 1;
320
321   if (modes)
322     *modes = HAL_COLOR_MODE_NATIVE;
323
324   return HWC2::Error::None;
325 }
326
327 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayAttribute(hwc2_config_t config,
328                                                        int32_t attribute_in,
329                                                        int32_t *value) {
330   supported(__func__);
331   auto mode =
332       std::find_if(connector_->modes().begin(), connector_->modes().end(),
333                    [config](DrmMode const &m) { return m.id() == config; });
334   if (mode == connector_->modes().end()) {
335     ALOGE("Could not find active mode for %d", config);
336     return HWC2::Error::BadConfig;
337   }
338
339   static const int32_t kUmPerInch = 25400;
340   uint32_t mm_width = connector_->mm_width();
341   uint32_t mm_height = connector_->mm_height();
342   auto attribute = static_cast<HWC2::Attribute>(attribute_in);
343   switch (attribute) {
344     case HWC2::Attribute::Width:
345       *value = mode->h_display();
346       break;
347     case HWC2::Attribute::Height:
348       *value = mode->v_display();
349       break;
350     case HWC2::Attribute::VsyncPeriod:
351       // in nanoseconds
352       *value = 1000 * 1000 * 1000 / mode->v_refresh();
353       break;
354     case HWC2::Attribute::DpiX:
355       // Dots per 1000 inches
356       *value = mm_width ? (mode->h_display() * kUmPerInch) / mm_width : -1;
357       break;
358     case HWC2::Attribute::DpiY:
359       // Dots per 1000 inches
360       *value = mm_height ? (mode->v_display() * kUmPerInch) / mm_height : -1;
361       break;
362     default:
363       *value = -1;
364       return HWC2::Error::BadConfig;
365   }
366   return HWC2::Error::None;
367 }
368
369 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayConfigs(uint32_t *num_configs,
370                                                      hwc2_config_t *configs) {
371   supported(__func__);
372   // Since this callback is normally invoked twice (once to get the count, and
373   // once to populate configs), we don't really want to read the edid
374   // redundantly. Instead, only update the modes on the first invocation. While
375   // it's possible this will result in stale modes, it'll all come out in the
376   // wash when we try to set the active config later.
377   if (!configs) {
378     int ret = connector_->UpdateModes();
379     if (ret) {
380       ALOGE("Failed to update display modes %d", ret);
381       return HWC2::Error::BadDisplay;
382     }
383   }
384
385   auto num_modes = static_cast<uint32_t>(connector_->modes().size());
386   if (!configs) {
387     *num_configs = num_modes;
388     return HWC2::Error::None;
389   }
390
391   uint32_t idx = 0;
392   for (const DrmMode &mode : connector_->modes()) {
393     if (idx >= *num_configs)
394       break;
395     configs[idx++] = mode.id();
396   }
397   *num_configs = idx;
398   return HWC2::Error::None;
399 }
400
401 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayName(uint32_t *size, char *name) {
402   supported(__func__);
403   std::ostringstream stream;
404   stream << "display-" << connector_->id();
405   std::string string = stream.str();
406   size_t length = string.length();
407   if (!name) {
408     *size = length;
409     return HWC2::Error::None;
410   }
411
412   *size = std::min<uint32_t>(static_cast<uint32_t>(length - 1), *size);
413   strncpy(name, string.c_str(), *size);
414   return HWC2::Error::None;
415 }
416
417 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayRequests(int32_t *display_requests,
418                                                       uint32_t *num_elements,
419                                                       hwc2_layer_t *layers,
420                                                       int32_t *layer_requests) {
421   supported(__func__);
422   // TODO: I think virtual display should request
423   //      HWC2_DISPLAY_REQUEST_WRITE_CLIENT_TARGET_TO_OUTPUT here
424   unsupported(__func__, display_requests, num_elements, layers, layer_requests);
425   *num_elements = 0;
426   return HWC2::Error::None;
427 }
428
429 HWC2::Error DrmHwcTwo::HwcDisplay::GetDisplayType(int32_t *type) {
430   supported(__func__);
431   *type = static_cast<int32_t>(type_);
432   return HWC2::Error::None;
433 }
434
435 HWC2::Error DrmHwcTwo::HwcDisplay::GetDozeSupport(int32_t *support) {
436   supported(__func__);
437   *support = 0;
438   return HWC2::Error::None;
439 }
440
441 HWC2::Error DrmHwcTwo::HwcDisplay::GetHdrCapabilities(
442     uint32_t *num_types, int32_t */*types*/, float */*max_luminance*/,
443     float */*max_average_luminance*/, float */*min_luminance*/) {
444   supported(__func__);
445   *num_types = 0;
446   return HWC2::Error::None;
447 }
448
449 HWC2::Error DrmHwcTwo::HwcDisplay::GetReleaseFences(uint32_t *num_elements,
450                                                     hwc2_layer_t *layers,
451                                                     int32_t *fences) {
452   supported(__func__);
453   uint32_t num_layers = 0;
454
455   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
456     ++num_layers;
457     if (layers == NULL || fences == NULL) {
458       continue;
459     } else if (num_layers > *num_elements) {
460       ALOGW("Overflow num_elements %d/%d", num_layers, *num_elements);
461       return HWC2::Error::None;
462     }
463
464     layers[num_layers - 1] = l.first;
465     fences[num_layers - 1] = l.second.take_release_fence();
466   }
467   *num_elements = num_layers;
468   return HWC2::Error::None;
469 }
470
471 void DrmHwcTwo::HwcDisplay::AddFenceToRetireFence(int fd) {
472   supported(__func__);
473   if (fd < 0)
474     return;
475
476   if (next_retire_fence_.get() >= 0) {
477     int old_fence = next_retire_fence_.get();
478     next_retire_fence_.Set(sync_merge("dc_retire", old_fence, fd));
479   } else {
480     next_retire_fence_.Set(dup(fd));
481   }
482 }
483
484 HWC2::Error DrmHwcTwo::HwcDisplay::PresentDisplay(int32_t *retire_fence) {
485   supported(__func__);
486   std::vector<DrmCompositionDisplayLayersMap> layers_map;
487   layers_map.emplace_back();
488   DrmCompositionDisplayLayersMap &map = layers_map.back();
489
490   map.display = static_cast<int>(handle_);
491   map.geometry_changed = true;  // TODO: Fix this
492
493   // order the layers by z-order
494   bool use_client_layer = false;
495   uint32_t client_z_order = 0;
496   std::map<uint32_t, DrmHwcTwo::HwcLayer *> z_map;
497   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
498     switch (l.second.validated_type()) {
499       case HWC2::Composition::Device:
500         z_map.emplace(std::make_pair(l.second.z_order(), &l.second));
501         break;
502       case HWC2::Composition::Client:
503         // Place it at the z_order of the highest client layer
504         use_client_layer = true;
505         client_z_order = std::max(client_z_order, l.second.z_order());
506         break;
507       default:
508         continue;
509     }
510   }
511   if (use_client_layer)
512     z_map.emplace(std::make_pair(client_z_order, &client_layer_));
513
514   // now that they're ordered by z, add them to the composition
515   for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map) {
516     DrmHwcLayer layer;
517     l.second->PopulateDrmLayer(&layer);
518     int ret = layer.ImportBuffer(importer_.get(), gralloc_);
519     if (ret) {
520       ALOGE("Failed to import layer, ret=%d", ret);
521       return HWC2::Error::NoResources;
522     }
523     map.layers.emplace_back(std::move(layer));
524   }
525   if (map.layers.empty()) {
526     *retire_fence = -1;
527     return HWC2::Error::None;
528   }
529
530   std::unique_ptr<DrmDisplayComposition> composition =
531       compositor_.CreateComposition();
532   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
533
534   // TODO: Don't always assume geometry changed
535   int ret = composition->SetLayers(map.layers.data(), map.layers.size(), true);
536   if (ret) {
537     ALOGE("Failed to set layers in the composition ret=%d", ret);
538     return HWC2::Error::BadLayer;
539   }
540
541   std::vector<DrmPlane *> primary_planes(primary_planes_);
542   std::vector<DrmPlane *> overlay_planes(overlay_planes_);
543   ret = composition->Plan(compositor_.squash_state(), &primary_planes,
544                          &overlay_planes);
545   if (ret) {
546     ALOGE("Failed to plan the composition ret=%d", ret);
547     return HWC2::Error::BadConfig;
548   }
549
550   // Disable the planes we're not using
551   for (auto i = primary_planes.begin(); i != primary_planes.end();) {
552     composition->AddPlaneDisable(*i);
553     i = primary_planes.erase(i);
554   }
555   for (auto i = overlay_planes.begin(); i != overlay_planes.end();) {
556     composition->AddPlaneDisable(*i);
557     i = overlay_planes.erase(i);
558   }
559
560   ret = compositor_.QueueComposition(std::move(composition));
561   if (ret) {
562     ALOGE("Failed to apply the frame composition ret=%d", ret);
563     return HWC2::Error::BadParameter;
564   }
565
566   // Now that the release fences have been generated by the compositor, make
567   // sure they're managed properly
568   for (std::pair<const uint32_t, DrmHwcTwo::HwcLayer *> &l : z_map) {
569     l.second->manage_release_fence();
570     AddFenceToRetireFence(l.second->release_fence());
571   }
572
573   // The retire fence returned here is for the last frame, so return it and
574   // promote the next retire fence
575   *retire_fence = retire_fence_.Release();
576   retire_fence_ = std::move(next_retire_fence_);
577
578   ++frame_no_;
579   return HWC2::Error::None;
580 }
581
582 HWC2::Error DrmHwcTwo::HwcDisplay::SetActiveConfig(hwc2_config_t config) {
583   supported(__func__);
584   auto mode =
585       std::find_if(connector_->modes().begin(), connector_->modes().end(),
586                    [config](DrmMode const &m) { return m.id() == config; });
587   if (mode == connector_->modes().end()) {
588     ALOGE("Could not find active mode for %d", config);
589     return HWC2::Error::BadConfig;
590   }
591
592   std::unique_ptr<DrmDisplayComposition> composition =
593       compositor_.CreateComposition();
594   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
595   int ret = composition->SetDisplayMode(*mode);
596   ret = compositor_.QueueComposition(std::move(composition));
597   if (ret) {
598     ALOGE("Failed to queue dpms composition on %d", ret);
599     return HWC2::Error::BadConfig;
600   }
601   if (connector_->active_mode().id() == 0)
602     connector_->set_active_mode(*mode);
603
604   // Setup the client layer's dimensions
605   hwc_rect_t display_frame = {.left = 0,
606                               .top = 0,
607                               .right = static_cast<int>(mode->h_display()),
608                               .bottom = static_cast<int>(mode->v_display())};
609   client_layer_.SetLayerDisplayFrame(display_frame);
610   hwc_frect_t source_crop = {.left = 0.0f,
611                              .top = 0.0f,
612                              .right = mode->h_display() + 0.0f,
613                              .bottom = mode->v_display() + 0.0f};
614   client_layer_.SetLayerSourceCrop(source_crop);
615
616   return HWC2::Error::None;
617 }
618
619 HWC2::Error DrmHwcTwo::HwcDisplay::SetClientTarget(buffer_handle_t target,
620                                                    int32_t acquire_fence,
621                                                    int32_t dataspace,
622                                                    hwc_region_t damage) {
623   supported(__func__);
624   UniqueFd uf(acquire_fence);
625
626   client_layer_.set_buffer(target);
627   client_layer_.set_acquire_fence(uf.get());
628   client_layer_.SetLayerDataspace(dataspace);
629   return HWC2::Error::None;
630 }
631
632 HWC2::Error DrmHwcTwo::HwcDisplay::SetColorMode(int32_t mode) {
633   supported(__func__);
634
635   if (mode != HAL_COLOR_MODE_NATIVE)
636     return HWC2::Error::Unsupported;
637
638   color_mode_ = mode;
639   return HWC2::Error::None;
640 }
641
642 HWC2::Error DrmHwcTwo::HwcDisplay::SetColorTransform(const float *matrix,
643                                                      int32_t hint) {
644   supported(__func__);
645   // TODO: Force client composition if we get this
646   return unsupported(__func__, matrix, hint);
647 }
648
649 HWC2::Error DrmHwcTwo::HwcDisplay::SetOutputBuffer(buffer_handle_t buffer,
650                                                    int32_t release_fence) {
651   supported(__func__);
652   // TODO: Need virtual display support
653   return unsupported(__func__, buffer, release_fence);
654 }
655
656 HWC2::Error DrmHwcTwo::HwcDisplay::SetPowerMode(int32_t mode_in) {
657   supported(__func__);
658   uint64_t dpms_value = 0;
659   auto mode = static_cast<HWC2::PowerMode>(mode_in);
660   switch (mode) {
661     case HWC2::PowerMode::Off:
662       dpms_value = DRM_MODE_DPMS_OFF;
663       break;
664     case HWC2::PowerMode::On:
665       dpms_value = DRM_MODE_DPMS_ON;
666       break;
667     default:
668       ALOGI("Power mode %d is unsupported\n", mode);
669       return HWC2::Error::Unsupported;
670   };
671
672   std::unique_ptr<DrmDisplayComposition> composition =
673       compositor_.CreateComposition();
674   composition->Init(drm_, crtc_, importer_.get(), planner_.get(), frame_no_);
675   composition->SetDpmsMode(dpms_value);
676   int ret = compositor_.QueueComposition(std::move(composition));
677   if (ret) {
678     ALOGE("Failed to apply the dpms composition ret=%d", ret);
679     return HWC2::Error::BadParameter;
680   }
681   return HWC2::Error::None;
682 }
683
684 HWC2::Error DrmHwcTwo::HwcDisplay::SetVsyncEnabled(int32_t enabled) {
685   supported(__func__);
686   vsync_worker_.VSyncControl(enabled);
687   return HWC2::Error::None;
688 }
689
690 HWC2::Error DrmHwcTwo::HwcDisplay::ValidateDisplay(uint32_t *num_types,
691                                                    uint32_t *num_requests) {
692   supported(__func__);
693   *num_types = 0;
694   *num_requests = 0;
695   for (std::pair<const hwc2_layer_t, DrmHwcTwo::HwcLayer> &l : layers_) {
696     DrmHwcTwo::HwcLayer &layer = l.second;
697     switch (layer.sf_type()) {
698       case HWC2::Composition::SolidColor:
699       case HWC2::Composition::Cursor:
700       case HWC2::Composition::Sideband:
701         layer.set_validated_type(HWC2::Composition::Client);
702         ++*num_types;
703         break;
704       default:
705         layer.set_validated_type(layer.sf_type());
706         break;
707     }
708   }
709   return HWC2::Error::None;
710 }
711
712 HWC2::Error DrmHwcTwo::HwcLayer::SetCursorPosition(int32_t x, int32_t y) {
713   supported(__func__);
714   cursor_x_ = x;
715   cursor_y_ = y;
716   return HWC2::Error::None;
717 }
718
719 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerBlendMode(int32_t mode) {
720   supported(__func__);
721   blending_ = static_cast<HWC2::BlendMode>(mode);
722   return HWC2::Error::None;
723 }
724
725 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerBuffer(buffer_handle_t buffer,
726                                                 int32_t acquire_fence) {
727   supported(__func__);
728   UniqueFd uf(acquire_fence);
729
730   // The buffer and acquire_fence are handled elsewhere
731   if (sf_type_ == HWC2::Composition::Client ||
732       sf_type_ == HWC2::Composition::Sideband ||
733       sf_type_ == HWC2::Composition::SolidColor)
734     return HWC2::Error::None;
735
736   set_buffer(buffer);
737   set_acquire_fence(uf.get());
738   return HWC2::Error::None;
739 }
740
741 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerColor(hwc_color_t color) {
742   // TODO: Punt to client composition here?
743   return unsupported(__func__, color);
744 }
745
746 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerCompositionType(int32_t type) {
747   sf_type_ = static_cast<HWC2::Composition>(type);
748   return HWC2::Error::None;
749 }
750
751 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerDataspace(int32_t dataspace) {
752   supported(__func__);
753   dataspace_ = static_cast<android_dataspace_t>(dataspace);
754   return HWC2::Error::None;
755 }
756
757 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerDisplayFrame(hwc_rect_t frame) {
758   supported(__func__);
759   display_frame_ = frame;
760   return HWC2::Error::None;
761 }
762
763 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerPlaneAlpha(float alpha) {
764   supported(__func__);
765   alpha_ = alpha;
766   return HWC2::Error::None;
767 }
768
769 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSidebandStream(
770     const native_handle_t *stream) {
771   supported(__func__);
772   // TODO: We don't support sideband
773   return unsupported(__func__, stream);
774 }
775
776 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSourceCrop(hwc_frect_t crop) {
777   supported(__func__);
778   source_crop_ = crop;
779   return HWC2::Error::None;
780 }
781
782 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerSurfaceDamage(hwc_region_t damage) {
783   supported(__func__);
784   // TODO: We don't use surface damage, marking as unsupported
785   unsupported(__func__, damage);
786   return HWC2::Error::None;
787 }
788
789 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerTransform(int32_t transform) {
790   supported(__func__);
791   transform_ = static_cast<HWC2::Transform>(transform);
792   return HWC2::Error::None;
793 }
794
795 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerVisibleRegion(hwc_region_t visible) {
796   supported(__func__);
797   // TODO: We don't use this information, marking as unsupported
798   unsupported(__func__, visible);
799   return HWC2::Error::None;
800 }
801
802 HWC2::Error DrmHwcTwo::HwcLayer::SetLayerZOrder(uint32_t order) {
803   supported(__func__);
804   z_order_ = order;
805   return HWC2::Error::None;
806 }
807
808 void DrmHwcTwo::HwcLayer::PopulateDrmLayer(DrmHwcLayer *layer) {
809   supported(__func__);
810   switch (blending_) {
811     case HWC2::BlendMode::None:
812       layer->blending = DrmHwcBlending::kNone;
813       break;
814     case HWC2::BlendMode::Premultiplied:
815       layer->blending = DrmHwcBlending::kPreMult;
816       break;
817     case HWC2::BlendMode::Coverage:
818       layer->blending = DrmHwcBlending::kCoverage;
819       break;
820     default:
821       ALOGE("Unknown blending mode b=%d", blending_);
822       layer->blending = DrmHwcBlending::kNone;
823       break;
824   }
825
826   OutputFd release_fence = release_fence_output();
827
828   layer->sf_handle = buffer_;
829   layer->acquire_fence = acquire_fence_.Release();
830   layer->release_fence = std::move(release_fence);
831   layer->SetDisplayFrame(display_frame_);
832   layer->alpha = static_cast<uint8_t>(255.0f * alpha_ + 0.5f);
833   layer->SetSourceCrop(source_crop_);
834   layer->SetTransform(static_cast<int32_t>(transform_));
835 }
836
837 // static
838 int DrmHwcTwo::HookDevClose(hw_device_t * /*dev*/) {
839   unsupported(__func__);
840   return 0;
841 }
842
843 // static
844 void DrmHwcTwo::HookDevGetCapabilities(hwc2_device_t * /*dev*/,
845                                        uint32_t *out_count,
846                                        int32_t * /*out_capabilities*/) {
847   supported(__func__);
848   *out_count = 0;
849 }
850
851 // static
852 hwc2_function_pointer_t DrmHwcTwo::HookDevGetFunction(
853     struct hwc2_device * /*dev*/, int32_t descriptor) {
854   supported(__func__);
855   auto func = static_cast<HWC2::FunctionDescriptor>(descriptor);
856   switch (func) {
857     // Device functions
858     case HWC2::FunctionDescriptor::CreateVirtualDisplay:
859       return ToHook<HWC2_PFN_CREATE_VIRTUAL_DISPLAY>(
860           DeviceHook<int32_t, decltype(&DrmHwcTwo::CreateVirtualDisplay),
861                      &DrmHwcTwo::CreateVirtualDisplay, uint32_t, uint32_t,
862                      int32_t*, hwc2_display_t *>);
863     case HWC2::FunctionDescriptor::DestroyVirtualDisplay:
864       return ToHook<HWC2_PFN_DESTROY_VIRTUAL_DISPLAY>(
865           DeviceHook<int32_t, decltype(&DrmHwcTwo::DestroyVirtualDisplay),
866                      &DrmHwcTwo::DestroyVirtualDisplay, hwc2_display_t>);
867     case HWC2::FunctionDescriptor::Dump:
868       return ToHook<HWC2_PFN_DUMP>(
869           DeviceHook<void, decltype(&DrmHwcTwo::Dump), &DrmHwcTwo::Dump,
870                      uint32_t *, char *>);
871     case HWC2::FunctionDescriptor::GetMaxVirtualDisplayCount:
872       return ToHook<HWC2_PFN_GET_MAX_VIRTUAL_DISPLAY_COUNT>(
873           DeviceHook<uint32_t, decltype(&DrmHwcTwo::GetMaxVirtualDisplayCount),
874                      &DrmHwcTwo::GetMaxVirtualDisplayCount>);
875     case HWC2::FunctionDescriptor::RegisterCallback:
876       return ToHook<HWC2_PFN_REGISTER_CALLBACK>(
877           DeviceHook<int32_t, decltype(&DrmHwcTwo::RegisterCallback),
878                      &DrmHwcTwo::RegisterCallback, int32_t,
879                      hwc2_callback_data_t, hwc2_function_pointer_t>);
880
881     // Display functions
882     case HWC2::FunctionDescriptor::AcceptDisplayChanges:
883       return ToHook<HWC2_PFN_ACCEPT_DISPLAY_CHANGES>(
884           DisplayHook<decltype(&HwcDisplay::AcceptDisplayChanges),
885                       &HwcDisplay::AcceptDisplayChanges>);
886     case HWC2::FunctionDescriptor::CreateLayer:
887       return ToHook<HWC2_PFN_CREATE_LAYER>(
888           DisplayHook<decltype(&HwcDisplay::CreateLayer),
889                       &HwcDisplay::CreateLayer, hwc2_layer_t *>);
890     case HWC2::FunctionDescriptor::DestroyLayer:
891       return ToHook<HWC2_PFN_DESTROY_LAYER>(
892           DisplayHook<decltype(&HwcDisplay::DestroyLayer),
893                       &HwcDisplay::DestroyLayer, hwc2_layer_t>);
894     case HWC2::FunctionDescriptor::GetActiveConfig:
895       return ToHook<HWC2_PFN_GET_ACTIVE_CONFIG>(
896           DisplayHook<decltype(&HwcDisplay::GetActiveConfig),
897                       &HwcDisplay::GetActiveConfig, hwc2_config_t *>);
898     case HWC2::FunctionDescriptor::GetChangedCompositionTypes:
899       return ToHook<HWC2_PFN_GET_CHANGED_COMPOSITION_TYPES>(
900           DisplayHook<decltype(&HwcDisplay::GetChangedCompositionTypes),
901                       &HwcDisplay::GetChangedCompositionTypes, uint32_t *,
902                       hwc2_layer_t *, int32_t *>);
903     case HWC2::FunctionDescriptor::GetClientTargetSupport:
904       return ToHook<HWC2_PFN_GET_CLIENT_TARGET_SUPPORT>(
905           DisplayHook<decltype(&HwcDisplay::GetClientTargetSupport),
906                       &HwcDisplay::GetClientTargetSupport, uint32_t, uint32_t,
907                       int32_t, int32_t>);
908     case HWC2::FunctionDescriptor::GetColorModes:
909       return ToHook<HWC2_PFN_GET_COLOR_MODES>(
910           DisplayHook<decltype(&HwcDisplay::GetColorModes),
911                       &HwcDisplay::GetColorModes, uint32_t *, int32_t *>);
912     case HWC2::FunctionDescriptor::GetDisplayAttribute:
913       return ToHook<HWC2_PFN_GET_DISPLAY_ATTRIBUTE>(DisplayHook<
914           decltype(&HwcDisplay::GetDisplayAttribute),
915           &HwcDisplay::GetDisplayAttribute, hwc2_config_t, int32_t, int32_t *>);
916     case HWC2::FunctionDescriptor::GetDisplayConfigs:
917       return ToHook<HWC2_PFN_GET_DISPLAY_CONFIGS>(DisplayHook<
918           decltype(&HwcDisplay::GetDisplayConfigs),
919           &HwcDisplay::GetDisplayConfigs, uint32_t *, hwc2_config_t *>);
920     case HWC2::FunctionDescriptor::GetDisplayName:
921       return ToHook<HWC2_PFN_GET_DISPLAY_NAME>(
922           DisplayHook<decltype(&HwcDisplay::GetDisplayName),
923                       &HwcDisplay::GetDisplayName, uint32_t *, char *>);
924     case HWC2::FunctionDescriptor::GetDisplayRequests:
925       return ToHook<HWC2_PFN_GET_DISPLAY_REQUESTS>(
926           DisplayHook<decltype(&HwcDisplay::GetDisplayRequests),
927                       &HwcDisplay::GetDisplayRequests, int32_t *, uint32_t *,
928                       hwc2_layer_t *, int32_t *>);
929     case HWC2::FunctionDescriptor::GetDisplayType:
930       return ToHook<HWC2_PFN_GET_DISPLAY_TYPE>(
931           DisplayHook<decltype(&HwcDisplay::GetDisplayType),
932                       &HwcDisplay::GetDisplayType, int32_t *>);
933     case HWC2::FunctionDescriptor::GetDozeSupport:
934       return ToHook<HWC2_PFN_GET_DOZE_SUPPORT>(
935           DisplayHook<decltype(&HwcDisplay::GetDozeSupport),
936                       &HwcDisplay::GetDozeSupport, int32_t *>);
937     case HWC2::FunctionDescriptor::GetHdrCapabilities:
938       return ToHook<HWC2_PFN_GET_HDR_CAPABILITIES>(
939           DisplayHook<decltype(&HwcDisplay::GetHdrCapabilities),
940                       &HwcDisplay::GetHdrCapabilities, uint32_t *, int32_t *,
941                       float *, float *, float *>);
942     case HWC2::FunctionDescriptor::GetReleaseFences:
943       return ToHook<HWC2_PFN_GET_RELEASE_FENCES>(
944           DisplayHook<decltype(&HwcDisplay::GetReleaseFences),
945                       &HwcDisplay::GetReleaseFences, uint32_t *, hwc2_layer_t *,
946                       int32_t *>);
947     case HWC2::FunctionDescriptor::PresentDisplay:
948       return ToHook<HWC2_PFN_PRESENT_DISPLAY>(
949           DisplayHook<decltype(&HwcDisplay::PresentDisplay),
950                       &HwcDisplay::PresentDisplay, int32_t *>);
951     case HWC2::FunctionDescriptor::SetActiveConfig:
952       return ToHook<HWC2_PFN_SET_ACTIVE_CONFIG>(
953           DisplayHook<decltype(&HwcDisplay::SetActiveConfig),
954                       &HwcDisplay::SetActiveConfig, hwc2_config_t>);
955     case HWC2::FunctionDescriptor::SetClientTarget:
956       return ToHook<HWC2_PFN_SET_CLIENT_TARGET>(DisplayHook<
957           decltype(&HwcDisplay::SetClientTarget), &HwcDisplay::SetClientTarget,
958           buffer_handle_t, int32_t, int32_t, hwc_region_t>);
959     case HWC2::FunctionDescriptor::SetColorMode:
960       return ToHook<HWC2_PFN_SET_COLOR_MODE>(
961           DisplayHook<decltype(&HwcDisplay::SetColorMode),
962                       &HwcDisplay::SetColorMode, int32_t>);
963     case HWC2::FunctionDescriptor::SetColorTransform:
964       return ToHook<HWC2_PFN_SET_COLOR_TRANSFORM>(
965           DisplayHook<decltype(&HwcDisplay::SetColorTransform),
966                       &HwcDisplay::SetColorTransform, const float *, int32_t>);
967     case HWC2::FunctionDescriptor::SetOutputBuffer:
968       return ToHook<HWC2_PFN_SET_OUTPUT_BUFFER>(
969           DisplayHook<decltype(&HwcDisplay::SetOutputBuffer),
970                       &HwcDisplay::SetOutputBuffer, buffer_handle_t, int32_t>);
971     case HWC2::FunctionDescriptor::SetPowerMode:
972       return ToHook<HWC2_PFN_SET_POWER_MODE>(
973           DisplayHook<decltype(&HwcDisplay::SetPowerMode),
974                       &HwcDisplay::SetPowerMode, int32_t>);
975     case HWC2::FunctionDescriptor::SetVsyncEnabled:
976       return ToHook<HWC2_PFN_SET_VSYNC_ENABLED>(
977           DisplayHook<decltype(&HwcDisplay::SetVsyncEnabled),
978                       &HwcDisplay::SetVsyncEnabled, int32_t>);
979     case HWC2::FunctionDescriptor::ValidateDisplay:
980       return ToHook<HWC2_PFN_VALIDATE_DISPLAY>(
981           DisplayHook<decltype(&HwcDisplay::ValidateDisplay),
982                       &HwcDisplay::ValidateDisplay, uint32_t *, uint32_t *>);
983
984     // Layer functions
985     case HWC2::FunctionDescriptor::SetCursorPosition:
986       return ToHook<HWC2_PFN_SET_CURSOR_POSITION>(
987           LayerHook<decltype(&HwcLayer::SetCursorPosition),
988                     &HwcLayer::SetCursorPosition, int32_t, int32_t>);
989     case HWC2::FunctionDescriptor::SetLayerBlendMode:
990       return ToHook<HWC2_PFN_SET_LAYER_BLEND_MODE>(
991           LayerHook<decltype(&HwcLayer::SetLayerBlendMode),
992                     &HwcLayer::SetLayerBlendMode, int32_t>);
993     case HWC2::FunctionDescriptor::SetLayerBuffer:
994       return ToHook<HWC2_PFN_SET_LAYER_BUFFER>(
995           LayerHook<decltype(&HwcLayer::SetLayerBuffer),
996                     &HwcLayer::SetLayerBuffer, buffer_handle_t, int32_t>);
997     case HWC2::FunctionDescriptor::SetLayerColor:
998       return ToHook<HWC2_PFN_SET_LAYER_COLOR>(
999           LayerHook<decltype(&HwcLayer::SetLayerColor),
1000                     &HwcLayer::SetLayerColor, hwc_color_t>);
1001     case HWC2::FunctionDescriptor::SetLayerCompositionType:
1002       return ToHook<HWC2_PFN_SET_LAYER_COMPOSITION_TYPE>(
1003           LayerHook<decltype(&HwcLayer::SetLayerCompositionType),
1004                     &HwcLayer::SetLayerCompositionType, int32_t>);
1005     case HWC2::FunctionDescriptor::SetLayerDataspace:
1006       return ToHook<HWC2_PFN_SET_LAYER_DATASPACE>(
1007           LayerHook<decltype(&HwcLayer::SetLayerDataspace),
1008                     &HwcLayer::SetLayerDataspace, int32_t>);
1009     case HWC2::FunctionDescriptor::SetLayerDisplayFrame:
1010       return ToHook<HWC2_PFN_SET_LAYER_DISPLAY_FRAME>(
1011           LayerHook<decltype(&HwcLayer::SetLayerDisplayFrame),
1012                     &HwcLayer::SetLayerDisplayFrame, hwc_rect_t>);
1013     case HWC2::FunctionDescriptor::SetLayerPlaneAlpha:
1014       return ToHook<HWC2_PFN_SET_LAYER_PLANE_ALPHA>(
1015           LayerHook<decltype(&HwcLayer::SetLayerPlaneAlpha),
1016                     &HwcLayer::SetLayerPlaneAlpha, float>);
1017     case HWC2::FunctionDescriptor::SetLayerSidebandStream:
1018       return ToHook<HWC2_PFN_SET_LAYER_SIDEBAND_STREAM>(LayerHook<
1019           decltype(&HwcLayer::SetLayerSidebandStream),
1020           &HwcLayer::SetLayerSidebandStream, const native_handle_t *>);
1021     case HWC2::FunctionDescriptor::SetLayerSourceCrop:
1022       return ToHook<HWC2_PFN_SET_LAYER_SOURCE_CROP>(
1023           LayerHook<decltype(&HwcLayer::SetLayerSourceCrop),
1024                     &HwcLayer::SetLayerSourceCrop, hwc_frect_t>);
1025     case HWC2::FunctionDescriptor::SetLayerSurfaceDamage:
1026       return ToHook<HWC2_PFN_SET_LAYER_SURFACE_DAMAGE>(
1027           LayerHook<decltype(&HwcLayer::SetLayerSurfaceDamage),
1028                     &HwcLayer::SetLayerSurfaceDamage, hwc_region_t>);
1029     case HWC2::FunctionDescriptor::SetLayerTransform:
1030       return ToHook<HWC2_PFN_SET_LAYER_TRANSFORM>(
1031           LayerHook<decltype(&HwcLayer::SetLayerTransform),
1032                     &HwcLayer::SetLayerTransform, int32_t>);
1033     case HWC2::FunctionDescriptor::SetLayerVisibleRegion:
1034       return ToHook<HWC2_PFN_SET_LAYER_VISIBLE_REGION>(
1035           LayerHook<decltype(&HwcLayer::SetLayerVisibleRegion),
1036                     &HwcLayer::SetLayerVisibleRegion, hwc_region_t>);
1037     case HWC2::FunctionDescriptor::SetLayerZOrder:
1038       return ToHook<HWC2_PFN_SET_LAYER_Z_ORDER>(
1039           LayerHook<decltype(&HwcLayer::SetLayerZOrder),
1040                     &HwcLayer::SetLayerZOrder, uint32_t>);
1041     case HWC2::FunctionDescriptor::Invalid:
1042     default:
1043       return NULL;
1044   }
1045 }
1046
1047 // static
1048 int DrmHwcTwo::HookDevOpen(const struct hw_module_t *module, const char *name,
1049                            struct hw_device_t **dev) {
1050   supported(__func__);
1051   if (strcmp(name, HWC_HARDWARE_COMPOSER)) {
1052     ALOGE("Invalid module name- %s", name);
1053     return -EINVAL;
1054   }
1055
1056   std::unique_ptr<DrmHwcTwo> ctx(new DrmHwcTwo());
1057   if (!ctx) {
1058     ALOGE("Failed to allocate DrmHwcTwo");
1059     return -ENOMEM;
1060   }
1061
1062   HWC2::Error err = ctx->Init();
1063   if (err != HWC2::Error::None) {
1064     ALOGE("Failed to initialize DrmHwcTwo err=%d\n", err);
1065     return -EINVAL;
1066   }
1067
1068   ctx->common.module = const_cast<hw_module_t *>(module);
1069   *dev = &ctx->common;
1070   ctx.release();
1071   return 0;
1072 }
1073 }
1074
1075 static struct hw_module_methods_t hwc2_module_methods = {
1076     .open = android::DrmHwcTwo::HookDevOpen,
1077 };
1078
1079 hw_module_t HAL_MODULE_INFO_SYM = {
1080     .tag = HARDWARE_MODULE_TAG,
1081     .module_api_version = HARDWARE_MODULE_API_VERSION(2, 0),
1082     .id = HWC_HARDWARE_MODULE_ID,
1083     .name = "DrmHwcTwo module",
1084     .author = "The Android Open Source Project",
1085     .methods = &hwc2_module_methods,
1086     .dso = NULL,
1087     .reserved = {0},
1088 };