2 * Copyright (C) 2016 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include "drmdisplaycompositor.h"
18 #include "drmhwcomposer.h"
19 #include "drmresources.h"
21 #include "vsyncworker.h"
23 #include <hardware/hwcomposer2.h>
29 class DrmHwcTwo : public hwc2_device_t {
31 static int HookDevOpen(const struct hw_module_t *module, const char *name,
32 struct hw_device_t **dev);
41 HWC2::Composition sf_type() const {
44 HWC2::Composition validated_type() const {
45 return validated_type_;
47 void accept_type_change() {
48 sf_type_ = validated_type_;
50 void set_validated_type(HWC2::Composition type) {
51 validated_type_ = type;
53 bool type_changed() const {
54 return sf_type_ != validated_type_;
57 uint32_t z_order() const {
61 buffer_handle_t buffer() {
64 void set_buffer(buffer_handle_t buffer) {
68 int take_acquire_fence() {
69 return acquire_fence_.Release();
71 void set_acquire_fence(int acquire_fence) {
72 acquire_fence_.Set(dup(acquire_fence));
76 return release_fence_.get();
78 int take_release_fence() {
79 return release_fence_.Release();
81 void manage_release_fence() {
82 release_fence_.Set(release_fence_raw_);
83 release_fence_raw_ = -1;
85 OutputFd release_fence_output() {
86 return OutputFd(&release_fence_raw_);
89 void PopulateDrmLayer(DrmHwcLayer *layer);
92 HWC2::Error SetCursorPosition(int32_t x, int32_t y);
93 HWC2::Error SetLayerBlendMode(int32_t mode);
94 HWC2::Error SetLayerBuffer(buffer_handle_t buffer, int32_t acquire_fence);
95 HWC2::Error SetLayerColor(hwc_color_t color);
96 HWC2::Error SetLayerCompositionType(int32_t type);
97 HWC2::Error SetLayerDataspace(int32_t dataspace);
98 HWC2::Error SetLayerDisplayFrame(hwc_rect_t frame);
99 HWC2::Error SetLayerPlaneAlpha(float alpha);
100 HWC2::Error SetLayerSidebandStream(const native_handle_t *stream);
101 HWC2::Error SetLayerSourceCrop(hwc_frect_t crop);
102 HWC2::Error SetLayerSurfaceDamage(hwc_region_t damage);
103 HWC2::Error SetLayerTransform(int32_t transform);
104 HWC2::Error SetLayerVisibleRegion(hwc_region_t visible);
105 HWC2::Error SetLayerZOrder(uint32_t z);
108 // sf_type_ stores the initial type given to us by surfaceflinger,
109 // validated_type_ stores the type after running ValidateDisplay
110 HWC2::Composition sf_type_ = HWC2::Composition::Invalid;
111 HWC2::Composition validated_type_ = HWC2::Composition::Invalid;
113 HWC2::BlendMode blending_ = HWC2::BlendMode::None;
114 buffer_handle_t buffer_;
115 UniqueFd acquire_fence_;
116 int release_fence_raw_ = -1;
117 UniqueFd release_fence_;
118 hwc_rect_t display_frame_;
120 hwc_frect_t source_crop_;
123 HWC2::Transform transform_ = HWC2::Transform::None;
124 uint32_t z_order_ = 0;
125 android_dataspace_t dataspace_ = HAL_DATASPACE_UNKNOWN;
129 HwcCallback(hwc2_callback_data_t d, hwc2_function_pointer_t f)
132 hwc2_callback_data_t data;
133 hwc2_function_pointer_t func;
138 HwcDisplay(DrmResources *drm, std::shared_ptr<Importer> importer,
139 const gralloc_module_t *gralloc, hwc2_display_t handle,
140 HWC2::DisplayType type);
141 HwcDisplay(const HwcDisplay &) = delete;
142 HWC2::Error Init(std::vector<DrmPlane *> *planes);
144 HWC2::Error RegisterVsyncCallback(hwc2_callback_data_t data,
145 hwc2_function_pointer_t func);
148 HWC2::Error AcceptDisplayChanges();
149 HWC2::Error CreateLayer(hwc2_layer_t *layer);
150 HWC2::Error DestroyLayer(hwc2_layer_t layer);
151 HWC2::Error GetActiveConfig(hwc2_config_t *config);
152 HWC2::Error GetChangedCompositionTypes(uint32_t *num_elements,
153 hwc2_layer_t *layers,
155 HWC2::Error GetClientTargetSupport(uint32_t width, uint32_t height,
156 int32_t format, int32_t dataspace);
157 HWC2::Error GetColorModes(uint32_t *num_modes, int32_t *modes);
158 HWC2::Error GetDisplayAttribute(hwc2_config_t config, int32_t attribute,
160 HWC2::Error GetDisplayConfigs(uint32_t *num_configs,
161 hwc2_config_t *configs);
162 HWC2::Error GetDisplayName(uint32_t *size, char *name);
163 HWC2::Error GetDisplayRequests(int32_t *display_requests,
164 uint32_t *num_elements, hwc2_layer_t *layers,
165 int32_t *layer_requests);
166 HWC2::Error GetDisplayType(int32_t *type);
167 HWC2::Error GetDozeSupport(int32_t *support);
168 HWC2::Error GetHdrCapabilities(uint32_t *num_types, int32_t *types,
169 float *max_luminance,
170 float *max_average_luminance,
171 float *min_luminance);
172 HWC2::Error GetReleaseFences(uint32_t *num_elements, hwc2_layer_t *layers,
174 HWC2::Error PresentDisplay(int32_t *retire_fence);
175 HWC2::Error SetActiveConfig(hwc2_config_t config);
176 HWC2::Error SetClientTarget(buffer_handle_t target, int32_t acquire_fence,
177 int32_t dataspace, hwc_region_t damage);
178 HWC2::Error SetColorMode(int32_t mode);
179 HWC2::Error SetColorTransform(const float *matrix, int32_t hint);
180 HWC2::Error SetOutputBuffer(buffer_handle_t buffer, int32_t release_fence);
181 HWC2::Error SetPowerMode(int32_t mode);
182 HWC2::Error SetVsyncEnabled(int32_t enabled);
183 HWC2::Error ValidateDisplay(uint32_t *num_types, uint32_t *num_requests);
184 HwcLayer &get_layer(hwc2_layer_t layer) {
185 return layers_.at(layer);
189 void AddFenceToRetireFence(int fd);
192 DrmDisplayCompositor compositor_;
193 std::shared_ptr<Importer> importer_;
194 std::unique_ptr<Planner> planner_;
195 const gralloc_module_t *gralloc_;
197 std::vector<DrmPlane *> primary_planes_;
198 std::vector<DrmPlane *> overlay_planes_;
200 VSyncWorker vsync_worker_;
201 DrmConnector *connector_ = NULL;
202 DrmCrtc *crtc_ = NULL;
203 hwc2_display_t handle_;
204 HWC2::DisplayType type_;
205 uint32_t layer_idx_ = 0;
206 std::map<hwc2_layer_t, HwcLayer> layers_;
207 HwcLayer client_layer_;
208 UniqueFd retire_fence_;
209 UniqueFd next_retire_fence_;
212 uint32_t frame_no_ = 0;
215 static DrmHwcTwo *toDrmHwcTwo(hwc2_device_t *dev) {
216 return static_cast<DrmHwcTwo *>(dev);
219 template <typename PFN, typename T>
220 static hwc2_function_pointer_t ToHook(T function) {
221 static_assert(std::is_same<PFN, T>::value, "Incompatible fn pointer");
222 return reinterpret_cast<hwc2_function_pointer_t>(function);
225 template <typename T, typename HookType, HookType func, typename... Args>
226 static T DeviceHook(hwc2_device_t *dev, Args... args) {
227 DrmHwcTwo *hwc = toDrmHwcTwo(dev);
228 return static_cast<T>(((*hwc).*func)(std::forward<Args>(args)...));
231 template <typename HookType, HookType func, typename... Args>
232 static int32_t DisplayHook(hwc2_device_t *dev, hwc2_display_t display_handle,
234 DrmHwcTwo *hwc = toDrmHwcTwo(dev);
235 HwcDisplay &display = hwc->displays_.at(display_handle);
236 return static_cast<int32_t>((display.*func)(std::forward<Args>(args)...));
239 template <typename HookType, HookType func, typename... Args>
240 static int32_t LayerHook(hwc2_device_t *dev, hwc2_display_t display_handle,
241 hwc2_layer_t layer_handle, Args... args) {
242 DrmHwcTwo *hwc = toDrmHwcTwo(dev);
243 HwcDisplay &display = hwc->displays_.at(display_handle);
244 HwcLayer &layer = display.get_layer(layer_handle);
245 return static_cast<int32_t>((layer.*func)(std::forward<Args>(args)...));
248 // hwc2_device_t hooks
249 static int HookDevClose(hw_device_t *dev);
250 static void HookDevGetCapabilities(hwc2_device_t *dev, uint32_t *out_count,
251 int32_t *out_capabilities);
252 static hwc2_function_pointer_t HookDevGetFunction(struct hwc2_device *device,
256 HWC2::Error CreateVirtualDisplay(uint32_t width, uint32_t height,
258 hwc2_display_t *display);
259 HWC2::Error DestroyVirtualDisplay(hwc2_display_t display);
260 void Dump(uint32_t *size, char *buffer);
261 uint32_t GetMaxVirtualDisplayCount();
262 HWC2::Error RegisterCallback(int32_t descriptor, hwc2_callback_data_t data,
263 hwc2_function_pointer_t function);
266 std::shared_ptr<Importer> importer_; // Shared with HwcDisplay
267 const gralloc_module_t *gralloc_;
268 std::map<hwc2_display_t, HwcDisplay> displays_;
269 std::map<HWC2::Callback, HwcCallback> callbacks_;