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 34namespace sdm { 35 36class HWCSession : hwc2_device_t, public qClient::BnQClient { 37 public: 38 struct HWCModuleMethods : public hw_module_methods_t { 39 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> 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> 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 } 79 } 80 return INT32(status); 81 } 82 83 // HWC2 Functions that require a concrete implementation in hwc session 84 // and hence need to be member functions 85 static int32_t AcceptDisplayChanges(hwc2_device_t *device, hwc2_display_t display); 86 static int32_t CreateLayer(hwc2_device_t *device, hwc2_display_t display, 87 hwc2_layer_t *out_layer_id); 88 static int32_t CreateVirtualDisplay(hwc2_device_t *device, uint32_t width, uint32_t height, 89 int32_t *format, hwc2_display_t *out_display_id); 90 static int32_t DestroyLayer(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer); 91 static int32_t DestroyVirtualDisplay(hwc2_device_t *device, hwc2_display_t display); 92 static void Dump(hwc2_device_t *device, uint32_t *out_size, char *out_buffer); 93 static int32_t PresentDisplay(hwc2_device_t *device, hwc2_display_t display, 94 int32_t *out_retire_fence); 95 static int32_t RegisterCallback(hwc2_device_t *device, int32_t descriptor, 96 hwc2_callback_data_t callback_data, 97 hwc2_function_pointer_t pointer); 98 static int32_t SetOutputBuffer(hwc2_device_t *device, hwc2_display_t display, 99 buffer_handle_t buffer, int32_t releaseFence); 100 static int32_t SetLayerZOrder(hwc2_device_t *device, hwc2_display_t display, hwc2_layer_t layer, 101 uint32_t z); 102 static int32_t SetPowerMode(hwc2_device_t *device, hwc2_display_t display, int32_t int_mode); 103 static int32_t ValidateDisplay(hwc2_device_t *device, hwc2_display_t display, 104 uint32_t *out_num_types, uint32_t *out_num_requests); 105 static int32_t SetColorMode(hwc2_device_t *device, hwc2_display_t display, 106 int32_t /*android_color_mode_t*/ int_mode); 107 static int32_t SetColorTransform(hwc2_device_t *device, hwc2_display_t display, 108 const float *matrix, int32_t /*android_color_transform_t*/ hint); 109 110 private: 111 static const int kExternalConnectionTimeoutMs = 500; 112 static const int kPartialUpdateControlTimeoutMs = 100; 113 114 // hwc methods 115 static int Open(const hw_module_t *module, const char *name, hw_device_t **device); 116 static int Close(hw_device_t *device); 117 static void GetCapabilities(struct hwc2_device *device, uint32_t *outCount, 118 int32_t *outCapabilities); 119 static hwc2_function_pointer_t GetFunction(struct hwc2_device *device, int32_t descriptor); 120 121 // Uevent thread 122 static void *HWCUeventThread(void *context); 123 void *HWCUeventThreadHandler(); 124 int GetEventValue(const char *uevent_data, int length, const char *event_info); 125 int HotPlugHandler(bool connected); 126 void ResetPanel(); 127 int32_t ConnectDisplay(int disp); 128 int DisconnectDisplay(int disp); 129 int GetVsyncPeriod(int disp); 130 131 // QClient methods 132 virtual android::status_t notifyCallback(uint32_t command, const android::Parcel *input_parcel, 133 android::Parcel *output_parcel); 134 void DynamicDebug(const android::Parcel *input_parcel); 135 void SetFrameDumpConfig(const android::Parcel *input_parcel); 136 android::status_t SetMaxMixerStages(const android::Parcel *input_parcel); 137 android::status_t SetDisplayMode(const android::Parcel *input_parcel); 138 android::status_t SetSecondaryDisplayStatus(const android::Parcel *input_parcel, 139 android::Parcel *output_parcel); 140 android::status_t ToggleScreenUpdates(const android::Parcel *input_parcel, 141 android::Parcel *output_parcel); 142 android::status_t ConfigureRefreshRate(const android::Parcel *input_parcel); 143 android::status_t QdcmCMDHandler(const android::Parcel *input_parcel, 144 android::Parcel *output_parcel); 145 android::status_t ControlPartialUpdate(const android::Parcel *input_parcel, android::Parcel *out); 146 android::status_t OnMinHdcpEncryptionLevelChange(const android::Parcel *input_parcel, 147 android::Parcel *output_parcel); 148 android::status_t SetPanelBrightness(const android::Parcel *input_parcel, 149 android::Parcel *output_parcel); 150 android::status_t GetPanelBrightness(const android::Parcel *input_parcel, 151 android::Parcel *output_parcel); 152 // These functions return the actual display config info as opposed to FB 153 android::status_t HandleSetActiveDisplayConfig(const android::Parcel *input_parcel, 154 android::Parcel *output_parcel); 155 android::status_t HandleGetActiveDisplayConfig(const android::Parcel *input_parcel, 156 android::Parcel *output_parcel); 157 android::status_t HandleGetDisplayConfigCount(const android::Parcel *input_parcel, 158 android::Parcel *output_parcel); 159 android::status_t HandleGetDisplayAttributesForConfig(const android::Parcel *input_parcel, 160 android::Parcel *output_parcel); 161 android::status_t GetVisibleDisplayRect(const android::Parcel *input_parcel, 162 android::Parcel *output_parcel); 163 164 android::status_t SetDynamicBWForCamera(const android::Parcel *input_parcel, 165 android::Parcel *output_parcel); 166 android::status_t GetBWTransactionStatus(const android::Parcel *input_parcel, 167 android::Parcel *output_parcel); 168 android::status_t SetMixerResolution(const android::Parcel *input_parcel); 169 170 android::status_t SetColorModeOverride(const android::Parcel *input_parcel); 171 172 static Locker locker_; 173 CoreInterface *core_intf_ = NULL; 174 HWCDisplay *hwc_display_[HWC_NUM_DISPLAY_TYPES] = {NULL}; 175 HWCCallbacks callbacks_; 176 pthread_t uevent_thread_; 177 bool uevent_thread_exit_ = false; 178 const char *uevent_thread_name_ = "HWC_UeventThread"; 179 HWCBufferAllocator buffer_allocator_; 180 HWCBufferSyncHandler buffer_sync_handler_; 181 HWCColorManager *color_mgr_ = NULL; 182 bool reset_panel_ = false; 183 bool secure_display_active_ = false; 184 bool external_pending_connect_ = false; 185 bool new_bw_mode_ = false; 186 bool need_invalidate_ = false; 187 int bw_mode_release_fd_ = -1; 188 qService::QService *qservice_ = NULL; 189}; 190 191} // namespace sdm 192 193#endif // __HWC_SESSION_H__ 194