1 /* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 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 USB_MONITOR_H 17 #define USB_MONITOR_H 18 19 #include <stdint.h> 20 #include <cups/ipp.h> 21 22 #define PRINTER_STATE_REASONS_SIZE 1024 23 24 #ifdef __cplusplus 25 extern "C" { 26 #endif 27 28 typedef struct { 29 ipp_pstate_t printerState; 30 char printerStateReasons[PRINTER_STATE_REASONS_SIZE]; 31 } PrinterStatus; 32 33 typedef void (MonitorPrinterCallback)(PrinterStatus* jobData); 34 35 bool StartMonitorIppPrinter(MonitorPrinterCallback callback, const char* uri); 36 37 bool IsSupportIppOverUsb(const char* uri); 38 39 void SetTerminalSingal(void); 40 41 void ComparePrinterStateReasons(const char* oldReasons, const char* newReasons, 42 char** addedReasons, char** deletedReasons); 43 44 void FreeCompareStringsResult(char** addedReasons, char** deletedReasons); 45 #ifdef __cplusplus 46 } 47 #endif 48 49 #endif // USB_MONITOR_H