1 /* 2 * Copyright (c) Huawei Technologies Co., Ltd. 2024. All rights reserved. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef OHOS_HDI_USB_V1_1_USBD_ACCESSORY_H 17 #define OHOS_HDI_USB_V1_1_USBD_ACCESSORY_H 18 19 #include <fcntl.h> 20 #include <sys/types.h> 21 #include <sys/ioctl.h> 22 #include <vector> 23 #include <string> 24 #include <map> 25 namespace OHOS { 26 namespace HDI { 27 namespace Usb { 28 namespace V1_1 { 29 30 /* ioctls for retrieving strings set by the host */ 31 #define ACCESSORY_GET_STRING_MANUFACTURER _IOW('M', 1, char[256]) 32 #define ACCESSORY_GET_STRING_MODEL _IOW('M', 2, char[256]) 33 #define ACCESSORY_GET_STRING_DESCRIPTION _IOW('M', 3, char[256]) 34 #define ACCESSORY_GET_STRING_VERSION _IOW('M', 4, char[256]) 35 #define ACCESSORY_GET_STRING_URI _IOW('M', 5, char[256]) 36 #define ACCESSORY_GET_STRING_SERIAL _IOW('M', 6, char[256]) 37 /* returns 1 if there is a start request pending */ 38 #define ACCESSORY_IS_START_REQUESTED _IO('M', 7) 39 /* returns audio mode (set via the ACCESSORY_SET_AUDIO_MODE control request) */ 40 #define ACCESSORY_GET_AUDIO_MODE _IO('M', 8) 41 #define AOA_IOCTL_EXTRA_DATA 0xC0 42 #define AOA_GET_EXTRA_DATA _IOW('M', AOA_IOCTL_EXTRA_DATA, char[256]) 43 44 45 class UsbdAccessory { 46 public: 47 static UsbdAccessory &GetInstance(); 48 int32_t GetAccessoryInfo(std::vector<std::string> &accessoryInfo); 49 int32_t OpenAccessory(int32_t &fd); 50 int32_t CloseAccessory(int32_t fd); 51 void HandleEvent(int32_t state); 52 private: 53 int32_t GetAccessoryString(int32_t fd, int32_t cmd, std::string &accInfoString); 54 int32_t ExtraToString(char* buffer, int32_t len, std::string &extraData); 55 void init_base64_char_map(); 56 std::string base64_encode(char* buffer, int32_t len); 57 std::map<char, int> base64_char_map; 58 int32_t accFd = {0}; 59 }; 60 61 } // namespace V1_1 62 } // namespace Usb 63 } // namespace HDI 64 } // namespace OHOS 65 #endif // OHOS_HDI_USB_V1_1_USBD_ACCESSORY_H 66