1 /* 2 * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. 3 * Not a Contribution. 4 * 5 * Copyright 2015 The Android Open Source Project 6 * 7 * Licensed under the Apache License, Version 2.0 (the "License"); 8 * you may not use this file except in compliance with the License. 9 * You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 */ 19 20 #ifndef __HWC_SESSION_H__ 21 #define __HWC_SESSION_H__ 22 23 #include <core/core_interface.h> 24 #include <utils/locker.h> 25 26 #include "hwc_callbacks.h" 27 #include "hwc_layers.h" 28 #include "hwc_display.h" 29 #include "hwc_display_primary.h" 30 #include "hwc_display_external.h" 31 #include "hwc_display_virtual.h" 32 #include "hwc_color_manager.h" 33 34 namespace sdm { 35 36 class HWCSession : hwc2_device_t, public qClient::BnQClient { 37 public: 38 struct HWCModuleMethods : public hw_module_methods_t { HWCModuleMethodsHWCModuleMethods39 HWCModuleMethods() { hw_module_methods_t::open = HWCSession::Open; } 40 }; 41 42 explicit HWCSession(const hw_module_t *module); 43 int Init(); 44 int Deinit(); 45 HWC2::Error CreateVirtualDisplayObject(uint32_t width, uint32_t height, int32_t *format); 46 47 template <typename... Args> CallDisplayFunction(hwc2_device_t * device,hwc2_display_t display,HWC2::Error (HWCDisplay::* member)(Args...),Args...args)48 static int32_t CallDisplayFunction(hwc2_device_t *device, hwc2_display_t display, 49 HWC2::Error (HWCDisplay::*member)(Args...), Args... args) { 50 if (!device) { 51 return HWC2_ERROR_BAD_DISPLAY; 52 } 53 54 HWCSession *hwc_session = static_cast<HWCSession *>(device); 55 auto status = HWC2::Error::BadDisplay; 56 if (hwc_session->hwc_display_[display]) { 57 auto hwc_display = hwc_session->hwc_display_[display]; 58 status = (hwc_display->*member)(std::forward<Args>(args)...); 59 } 60 return INT32(status); 61 } 62 63 template <typename... Args> CallLayerFunction(hwc2_device_t * device,hwc2_display_t display,hwc2_layer_t layer,HWC2::Error (HWCLayer::* member)(Args...),Args...args)64 static int32_t CallLayerFunction(hwc2_device_t *device, hwc2_display_t display, 65 hwc2_layer_t layer, HWC2::Error (HWCLayer::*member)(Args...), 66 Args... args) { 67 if (!device) { 68 return HWC2_ERROR_BAD_DISPLAY; 69 } 70 71 HWCSession *hwc_session = static_cast<HWCSession *>(device); 72 auto status = HWC2::Error::BadDisplay; 73 if (hwc_session->hwc_display_[display]) { 74 status = HWC2::Error::BadLayer; 75 auto hwc_layer = hwc_session->hwc_display_[display]->GetHWCLayer(layer); 76 if (hwc_layer != nullptr) { 77 status = (hwc_layer->*member)(std::forward<Args>(args)...); 78 if (hwc_session->hwc_display_[display]->geometry_changes_) { 79 hwc_session->hwc_display_[display]->validated_ = false; 80 } 81 } 82 } 83 return INT32(status); 84 } 85 86 // HWC2 Functions that require a concrete implementation in hwc session 87 // and hence need to be member functions 88 static int32_t AcceptDisplayChanges(hwc2_device_t *device, hwc2_display_t display); 89 static int32_t CreateLayer(hwc2_device_t *device, hwc2_display_t display, 90 hwc2_layer_t *out_layer_id); 91 static int32_t CreateVirtualDisplay(hwc2_device_t *device, uint32_t width, uint32_t height, 92 int32_t *format, hwc2_display_t *out_display_id); 93 static int32_t DestroyLayer(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer); 94 static int32_t DestroyVirtualDisplay(hwc2_device_t *device, hwc2_display_t display); 95 static void Dump(hwc2_device_t *device, uint32_t *out_size, char *out_buffer); 96 static int32_t PresentDisplay(hwc2_device_t *device, hwc2_display_t display, 97 int32_t *out_retire_fence); 98 static int32_t RegisterCallback(hwc2_device_t *device, int32_t descriptor, 99 hwc2_callback_data_t callback_data, 100 hwc2_function_pointer_t pointer); 101 static int32_t SetOutputBuffer(hwc2_device_t *device, hwc2_display_t display, 102 buffer_handle_t buffer, int32_t releaseFence); 103 static int32_t SetLayerZOrder(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer, 104 uint32_t z); 105 static int32_t SetPowerMode(hwc2_device_t *device, hwc2_display_t display, int32_t int_mode); 106 static int32_t ValidateDisplay(hwc2_device_t *device, hwc2_display_t display, 107 uint32_t *out_num_types, uint32_t *out_num_requests); 108 static int32_t SetColorMode(hwc2_device_t *device, hwc2_display_t display, 109 int32_t /*android_color_mode_t*/ int_mode); 110 static int32_t SetColorTransform(hwc2_device_t *device, hwc2_display_t display, 111 const float *matrix, int32_t /*android_color_transform_t*/ hint); 112 113 private: 114 static const int kExternalConnectionTimeoutMs = 500; 115 static const int kPartialUpdateControlTimeoutMs = 100; 116 117 // hwc methods 118 static int Open(const hw_module_t *module, const char *name, hw_device_t **device); 119 static int Close(hw_device_t *device); 120 static void GetCapabilities(struct hwc2_device *device, uint32_t *outCount, 121 int32_t *outCapabilities); 122 static hwc2_function_pointer_t GetFunction(struct hwc2_device *device, int32_t descriptor); 123 124 // Uevent thread 125 static void *HWCUeventThread(void *context); 126 void *HWCUeventThreadHandler(); 127 int GetEventValue(const char *uevent_data, int length, const char *event_info); 128 int HotPlugHandler(bool connected); 129 void ResetPanel(); 130 int32_t ConnectDisplay(int disp); 131 int DisconnectDisplay(int disp); 132 int GetVsyncPeriod(int disp); 133 134 // QClient methods 135 virtual android::status_t notifyCallback(uint32_t command, const android::Parcel *input_parcel, 136 android::Parcel *output_parcel); 137 void DynamicDebug(const android::Parcel *input_parcel); 138 void SetFrameDumpConfig(const android::Parcel *input_parcel); 139 android::status_t SetMaxMixerStages(const android::Parcel *input_parcel); 140 android::status_t SetDisplayMode(const android::Parcel *input_parcel); 141 android::status_t SetSecondaryDisplayStatus(const android::Parcel *input_parcel, 142 android::Parcel *output_parcel); 143 android::status_t ToggleScreenUpdates(const android::Parcel *input_parcel, 144 android::Parcel *output_parcel); 145 android::status_t ConfigureRefreshRate(const android::Parcel *input_parcel); 146 android::status_t QdcmCMDHandler(const android::Parcel *input_parcel, 147 android::Parcel *output_parcel); 148 android::status_t ControlPartialUpdate(const android::Parcel *input_parcel, android::Parcel *out); 149 android::status_t OnMinHdcpEncryptionLevelChange(const android::Parcel *input_parcel, 150 android::Parcel *output_parcel); 151 android::status_t SetPanelBrightness(const android::Parcel *input_parcel, 152 android::Parcel *output_parcel); 153 android::status_t GetPanelBrightness(const android::Parcel *input_parcel, 154 android::Parcel *output_parcel); 155 // These functions return the actual display config info as opposed to FB 156 android::status_t HandleSetActiveDisplayConfig(const android::Parcel *input_parcel, 157 android::Parcel *output_parcel); 158 android::status_t HandleGetActiveDisplayConfig(const android::Parcel *input_parcel, 159 android::Parcel *output_parcel); 160 android::status_t HandleGetDisplayConfigCount(const android::Parcel *input_parcel, 161 android::Parcel *output_parcel); 162 android::status_t HandleGetDisplayAttributesForConfig(const android::Parcel *input_parcel, 163 android::Parcel *output_parcel); 164 android::status_t GetVisibleDisplayRect(const android::Parcel *input_parcel, 165 android::Parcel *output_parcel); 166 167 android::status_t SetDynamicBWForCamera(const android::Parcel *input_parcel, 168 android::Parcel *output_parcel); 169 android::status_t GetBWTransactionStatus(const android::Parcel *input_parcel, 170 android::Parcel *output_parcel); 171 android::status_t SetMixerResolution(const android::Parcel *input_parcel); 172 173 android::status_t SetColorModeOverride(const android::Parcel *input_parcel); 174 175 static Locker locker_; 176 CoreInterface *core_intf_ = NULL; 177 HWCDisplay *hwc_display_[HWC_NUM_DISPLAY_TYPES] = {NULL}; 178 HWCCallbacks callbacks_; 179 pthread_t uevent_thread_; 180 bool uevent_thread_exit_ = false; 181 const char *uevent_thread_name_ = "HWC_UeventThread"; 182 HWCBufferAllocator *buffer_allocator_; 183 HWCBufferSyncHandler buffer_sync_handler_; 184 HWCColorManager *color_mgr_ = NULL; 185 bool reset_panel_ = false; 186 bool secure_display_active_ = false; 187 bool external_pending_connect_ = false; 188 bool new_bw_mode_ = false; 189 bool need_invalidate_ = false; 190 int bw_mode_release_fd_ = -1; 191 qService::QService *qservice_ = NULL; 192 }; 193 194 } // namespace sdm 195 196 #endif // __HWC_SESSION_H__ 197