1/* 2 * Copyright (c) 2014-2017, 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#include "hwc_socket_handler.h" 34 35namespace sdm { 36 37class HWCSession : hwc2_device_t, public qClient::BnQClient { 38 public: 39 struct HWCModuleMethods : public hw_module_methods_t { 40 HWCModuleMethods() { hw_module_methods_t::open = HWCSession::Open; } 41 }; 42 43 explicit HWCSession(const hw_module_t *module); 44 int Init(); 45 int Deinit(); 46 HWC2::Error CreateVirtualDisplayObject(uint32_t width, uint32_t height, int32_t *format); 47 48 template <typename... Args> 49 static int32_t CallDisplayFunction(hwc2_device_t *device, hwc2_display_t display, 50 HWC2::Error (HWCDisplay::*member)(Args...), Args... args) { 51 if (!device) { 52 return HWC2_ERROR_BAD_DISPLAY; 53 } 54 55 HWCSession *hwc_session = static_cast<HWCSession *>(device); 56 auto status = HWC2::Error::BadDisplay; 57 if (hwc_session->hwc_display_[display]) { 58 auto hwc_display = hwc_session->hwc_display_[display]; 59 status = (hwc_display->*member)(std::forward<Args>(args)...); 60 } 61 return INT32(status); 62 } 63 64 template <typename... Args> 65 static int32_t CallLayerFunction(hwc2_device_t *device, hwc2_display_t display, 66 hwc2_layer_t layer, HWC2::Error (HWCLayer::*member)(Args...), 67 Args... args) { 68 if (!device) { 69 return HWC2_ERROR_BAD_DISPLAY; 70 } 71 72 HWCSession *hwc_session = static_cast<HWCSession *>(device); 73 auto status = HWC2::Error::BadDisplay; 74 if (hwc_session->hwc_display_[display]) { 75 status = HWC2::Error::BadLayer; 76 auto hwc_layer = hwc_session->hwc_display_[display]->GetHWCLayer(layer); 77 if (hwc_layer != nullptr) { 78 status = (hwc_layer->*member)(std::forward<Args>(args)...); 79 if (hwc_session->hwc_display_[display]->geometry_changes_) { 80 hwc_session->hwc_display_[display]->validated_ = false; 81 } 82 } 83 } 84 return INT32(status); 85 } 86 87 // HWC2 Functions that require a concrete implementation in hwc session 88 // and hence need to be member functions 89 static int32_t AcceptDisplayChanges(hwc2_device_t *device, hwc2_display_t display); 90 static int32_t CreateLayer(hwc2_device_t *device, hwc2_display_t display, 91 hwc2_layer_t *out_layer_id); 92 static int32_t CreateVirtualDisplay(hwc2_device_t *device, uint32_t width, uint32_t height, 93 int32_t *format, hwc2_display_t *out_display_id); 94 static int32_t DestroyLayer(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer); 95 static int32_t DestroyVirtualDisplay(hwc2_device_t *device, hwc2_display_t display); 96 static void Dump(hwc2_device_t *device, uint32_t *out_size, char *out_buffer); 97 static int32_t PresentDisplay(hwc2_device_t *device, hwc2_display_t display, 98 int32_t *out_retire_fence); 99 static int32_t RegisterCallback(hwc2_device_t *device, int32_t descriptor, 100 hwc2_callback_data_t callback_data, 101 hwc2_function_pointer_t pointer); 102 static int32_t SetOutputBuffer(hwc2_device_t *device, hwc2_display_t display, 103 buffer_handle_t buffer, int32_t releaseFence); 104 static int32_t SetLayerZOrder(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer, 105 uint32_t z); 106 static int32_t SetPowerMode(hwc2_device_t *device, hwc2_display_t display, int32_t int_mode); 107 static int32_t ValidateDisplay(hwc2_device_t *device, hwc2_display_t display, 108 uint32_t *out_num_types, uint32_t *out_num_requests); 109 static int32_t SetColorMode(hwc2_device_t *device, hwc2_display_t display, 110 int32_t /*android_color_mode_t*/ int_mode); 111 static int32_t SetColorTransform(hwc2_device_t *device, hwc2_display_t display, 112 const float *matrix, int32_t /*android_color_transform_t*/ hint); 113 114 private: 115 static const int kExternalConnectionTimeoutMs = 500; 116 static const int kPartialUpdateControlTimeoutMs = 100; 117 118 // hwc methods 119 static int Open(const hw_module_t *module, const char *name, hw_device_t **device); 120 static int Close(hw_device_t *device); 121 static void GetCapabilities(struct hwc2_device *device, uint32_t *outCount, 122 int32_t *outCapabilities); 123 static hwc2_function_pointer_t GetFunction(struct hwc2_device *device, int32_t descriptor); 124 125 // Uevent thread 126 static void *HWCUeventThread(void *context); 127 void *HWCUeventThreadHandler(); 128 int GetEventValue(const char *uevent_data, int length, const char *event_info); 129 int HotPlugHandler(bool connected); 130 void ResetPanel(); 131 int32_t ConnectDisplay(int disp); 132 int DisconnectDisplay(int disp); 133 int GetVsyncPeriod(int disp); 134 135 // QClient methods 136 virtual android::status_t notifyCallback(uint32_t command, const android::Parcel *input_parcel, 137 android::Parcel *output_parcel); 138 void DynamicDebug(const android::Parcel *input_parcel); 139 void SetFrameDumpConfig(const android::Parcel *input_parcel); 140 android::status_t SetMaxMixerStages(const android::Parcel *input_parcel); 141 android::status_t SetDisplayMode(const android::Parcel *input_parcel); 142 android::status_t SetSecondaryDisplayStatus(const android::Parcel *input_parcel, 143 android::Parcel *output_parcel); 144 android::status_t ToggleScreenUpdates(const android::Parcel *input_parcel, 145 android::Parcel *output_parcel); 146 android::status_t ConfigureRefreshRate(const android::Parcel *input_parcel); 147 android::status_t QdcmCMDHandler(const android::Parcel *input_parcel, 148 android::Parcel *output_parcel); 149 android::status_t ControlPartialUpdate(const android::Parcel *input_parcel, android::Parcel *out); 150 android::status_t OnMinHdcpEncryptionLevelChange(const android::Parcel *input_parcel, 151 android::Parcel *output_parcel); 152 android::status_t SetPanelBrightness(const android::Parcel *input_parcel, 153 android::Parcel *output_parcel); 154 android::status_t GetPanelBrightness(const android::Parcel *input_parcel, 155 android::Parcel *output_parcel); 156 // These functions return the actual display config info as opposed to FB 157 android::status_t HandleSetActiveDisplayConfig(const android::Parcel *input_parcel, 158 android::Parcel *output_parcel); 159 android::status_t HandleGetActiveDisplayConfig(const android::Parcel *input_parcel, 160 android::Parcel *output_parcel); 161 android::status_t HandleGetDisplayConfigCount(const android::Parcel *input_parcel, 162 android::Parcel *output_parcel); 163 android::status_t HandleGetDisplayAttributesForConfig(const android::Parcel *input_parcel, 164 android::Parcel *output_parcel); 165 android::status_t GetVisibleDisplayRect(const android::Parcel *input_parcel, 166 android::Parcel *output_parcel); 167 168 android::status_t SetDynamicBWForCamera(const android::Parcel *input_parcel, 169 android::Parcel *output_parcel); 170 android::status_t GetBWTransactionStatus(const android::Parcel *input_parcel, 171 android::Parcel *output_parcel); 172 android::status_t SetMixerResolution(const android::Parcel *input_parcel); 173 174 android::status_t SetColorModeOverride(const android::Parcel *input_parcel); 175 176 android::status_t SetColorModeById(const android::Parcel *input_parcel); 177 178 static Locker locker_; 179 CoreInterface *core_intf_ = NULL; 180 HWCDisplay *hwc_display_[HWC_NUM_DISPLAY_TYPES] = {NULL}; 181 HWCCallbacks callbacks_; 182 pthread_t uevent_thread_; 183 bool uevent_thread_exit_ = false; 184 const char *uevent_thread_name_ = "HWC_UeventThread"; 185 HWCBufferAllocator *buffer_allocator_; 186 HWCBufferSyncHandler buffer_sync_handler_; 187 HWCColorManager *color_mgr_ = NULL; 188 bool reset_panel_ = false; 189 bool secure_display_active_ = false; 190 bool external_pending_connect_ = false; 191 bool new_bw_mode_ = false; 192 bool need_invalidate_ = false; 193 int bw_mode_release_fd_ = -1; 194 qService::QService *qservice_ = NULL; 195 HWCSocketHandler socket_handler_; 196}; 197 198} // namespace sdm 199 200#endif // __HWC_SESSION_H__ 201