!1081 新增扫描capi接口

Merge pull request !1081 from 刘昊苏/master
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openharmony_ci 2024-07-27 10:12:19 +00:00 committed by Gitee
commit 951db899a7
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@ -43,3 +43,17 @@ ohos_ndk_library("libohprint_ndk") {
system_capability = "SystemCapability.Print.PrintFramework"
system_capability_headers = [ "BasicServicesKit/ohprint.h" ]
}
ohos_ndk_headers("ohscan_header") {
dest_dir = "$ndk_headers_out_dir/BasicServicesKit/"
sources = [ "./ohscan.h" ]
}
ohos_ndk_library("libohscan_ndk") {
output_name = "ohscan"
output_extension = "so"
ndk_description_file = "./ohscan.ndk.json"
min_compact_version = "12"
system_capability = "SystemCapability.Print.PrintFramework"
system_capability_headers = [ "BasicServicesKit/ohscan.h" ]
}

327
BasicServicesKit/ohscan.h Normal file
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@ -0,0 +1,327 @@
/*
* Copyright (c) 2024 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @addtogroup OH_Scan
* @{
*
* @brief Provides the definition of the C interface for the scan module.
*
* @syscap SystemCapability.Print.PrintFramework
*
* @since 12
* @version 1.0
*/
/**
* @file ohscan.h
*
* @brief Declares the APIs to discover and connect scanners, scan images from the scanner,
* obtain the page scanning progress and set scanned image parameters, and so on.
*
* @library libohscan.so
* @kit BasicServicesKit
* @syscap SystemCapability.Print.PrintFramework
* @since 12
* @version 1.0
*/
#ifndef OH_SCAN_H
#define OH_SCAN_H
#include <stdint.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Defines error codes.
*
* @since 12
* @version 1.0
*/
typedef enum {
/** @error The operation is successful. */
SCAN_ERROR_NONE = 0,
/** @error Permission verification failed. */
SCAN_ERROR_NO_PERMISSION = 201,
/** @error The parameter is invalid. For example, the pointer is null or the character string is null. */
SCAN_ERROR_INVALID_PARAMETER = 401,
/** @error General internal error. */
SCAN_ERROR_GENERIC_FAILURE = 24300101,
/** @error RPC communication error. */
SCAN_ERROR_RPC_FAILURE = 24300102,
/** @error Server error. */
SCAN_ERROR_SERVER_FAILURE = 24300103,
/** @error Operation is not supported. **/
SCAN_ERROR_UNSUPPORTED = 24300104,
/** @error Operation was cancelled. **/
SCAN_ERROR_CANCELED = 24300105,
/** @error Device is busy, try again later. **/
SCAN_ERROR_DEVICE_BUSY = 24300106,
/** @error Data is invalid (includes no dev at open). **/
SCAN_ERROR_INVALID = 24300107,
/** @error Document feeder jammed. **/
SCAN_ERROR_JAMMED = 24300108,
/** @error Document feeder out of documents. **/
SCAN_ERROR_NO_DOCS = 24300109,
/** @error Scanner cover is open. **/
SCAN_ERROR_COVER_OPEN = 24300110,
/** @error Error during device I/O. **/
SCAN_ERROR_IO_ERROR = 24300111,
/** @error Out of memory. **/
SCAN_ERROR_NO_MEMORY = 24300112,
} Scan_ErrorCode;
/**
* @brief Indicates scanner device information.
*
* @since 12
*/
typedef struct {
/** Scanner id. */
const char* scannerId;
/** Scanner manufacturer. */
const char* manufacturer;
/** Scanner model. */
const char* model;
/** Scanner discoverMode. */
const char* discoverMode;
/** Scanner serialNumber. */
const char* serialNumber;
} Scan_ScannerDevice;
/**
* @brief Indicates the progress of scanning a picture by the scanner.
*
* @since 12
*/
typedef struct {
/** Picture progress from 0 to 100. */
int32_t progress;
/** scanner file handle. */
int32_t fd;
/** Indicates whether the image is the last scanned image. */
bool isFinal;
} Scan_PictureScanProgress;
/**
* @brief Indicates all parameter options for one scanner.
*
* @since 12
*/
typedef struct {
/** Title of an option. */
char** titles;
/** Description of an option. */
char** descriptions;
/** The range that an option can be set to. */
char** ranges;
/** Number of parameter options that can be set. */
int32_t optionCount;
} Scan_ScannerOptions;
/**
* @brief Scanner devices discovery callback, register by {@link OH_Scan_StartScannerDiscovery}.
* The memory to which the pointer points will be released when the callback function ends.
*
* @param devices List of all discovered scanner devices.
* @param deviceCount Number of Scanners Found.
* @since 12
*/
typedef void (*Scan_ScannerDiscoveryCallback)(Scan_ScannerDevice** devices, int32_t deviceCount);
/**
* @brief This API checks and pulls up the scan service, initializes the scan client,
* and establishes a connection to the scan service.
*
* @permission {@code ohos.permission.PRINT}
* @return {@link Scan_ERROR_NONE} Indicates the scanning service is successfully started.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_Init();
/**
* @brief This API starts discovering scanners, Register a callback to handle discovered scanner devices.
*
* @permission {@code ohos.permission.PRINT}
* @param callback The {@link Scan_ScannerDiscoveryCallback} of scanner discovery event.
* @return {@link Scan_ERROR_NONE} Indicates successful start of scanner search.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_StartScannerDiscovery(Scan_ScannerDiscoveryCallback callback);
/**
* @brief This API connects to scanner devices.
*
* @permission {@code ohos.permission.PRINT}
* @param scannerId The id used to connect to the scanner.
* @return {@link Scan_ERROR_NONE} Indicates that the scanner was successfully connected.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* {@link SCAN_ERROR_DEVICE_BUSY} Indicates that the scanner is busy.
* {@link SCAN_ERROR_INVALID_PARAMETER} Indicates that the input parameter is invalid.
* {@link SCAN_ERROR_IO_ERROR} Indicates an error occured while communicating with the device.
* {@link SCAN_ERROR_NO_MEM} Indicates an insufficent amount of memory is available.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_OpenScanner(const char* scannerId);
/**
* @brief This API is used to close the connected scanner device.
*
* @permission {@code ohos.permission.PRINT}
* @param scannerId The id to disconnect the scanner.
* @return {@link Scan_ERROR_NONE} Indicates that the scanner connection was successfully closed.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* {@link SCAN_ERROR_INVALID_PARAMETER} Indicates that the input parameter is invalid.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_CloseScanner(const char* scannerId);
/**
* @brief This API can be used to get a list of options that can be set by the scanner.
* The returned struct pointer points to memory that is automatically freed when {@link OH_Scan_Exit},
* and only one copy will be stored in memory for each model.
*
* @permission {@code ohos.permission.PRINT}
* @param scannerId The id used to obtain the scanner parameters.
* @param errorCode The errorCode returns {@link Scan_ErrorCode#Scan_ERROR_NONE} if the execution is successful,
* otherwise returns a specific error code, refer to {@link Print_ErrorCode}.
* @return {@link Scan_ERROR_NONE} Indicates that the scanner parameter options are successfully obtained.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* {@link SCAN_ERROR_INVALID_PARAMETER} Indicates invalid parameter.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
Scan_ScannerOptions* OH_Scan_GetScannerParameter(const char* scannerId, int32_t* errorCode);
/**
* @brief This API can be used to set one of the scanner's option parameters.
* The option and value passed in are obtained from {@link OH_Scan_GetScannerParameter}.
*
* @permission {@code ohos.permission.PRINT}
* @param scannerId This id is used to set the options for a specific scanner.
* @param option Options number to be set.The value ranges from 0 to {@link optionCount} - 1,
* be obtained from the {@link Scan_ScannerOptions}.
* @param value Option value to be set, valid value is obtained from the {@link ranges},
* be obtained from the {@link Scan_ScannerOptions}.
* @return {@link Scan_ERROR_NONE} Indicates that the scanner parameters were successfully set.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates an error occurs in the scan process.
* {@link SCAN_ERROR_INVALID_PARAMETER} Indicates invalid parameter.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_SetScannerParameter(const char* scannerId, const int32_t option, const char* value);
/**
* @brief This API allows the scanner to start scanning.
*
* @permission {@code ohos.permission.PRINT}
* @param scannerId This id is used to start the scan job for the specified scanner.
* @param batchMode Whether to start the scanner in batch mode.
* @return {@link Scan_ERROR_NONE} Indicates that the scanner has successfully canceled the scan job.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* {@link SCAN_ERROR_JAMMED} Indicates the document feeder is jammed.
* {@link SCAN_ERROR_NO_DOCS} Indicates the document feeder is out of documents.
* {@link SCAN_ERROR_COVER_OPEN} Indicates the scanner cover is open.
* {@link SCAN_ERROR_IO_ERROR} Indicates an error occurred while communicating with the device.
* {@link SCAN_ERROR_NO_MEM} Indicates an insufficent amount of memory is available.
* {@link SCAN_ERROR_INVALID_PARAMETER} Indicates that the input parameter is invalid.
* {@link SCAN_ERROR_DEVICE_BUSY} Indicates the device is busy, the operation should be retried later.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_StartScan(const char* scannerId, bool batchMode);
/**
* @brief This API allows the scanner to cancel the scan.
*
* @permission {@code ohos.permission.PRINT}
* @param scannerId This id is used to cancel the scan job for the specified scanner.
* @return {@link Scan_ERROR_NONE} Indicates that the scanner has successfully canceled the scan job.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_INVALID_PARAMETER} Indicates if the pointer is null or the character string is null.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_CancelScan(const char* scannerId);
/**
* @brief This API can get the progress of the scanner scanning the picture.A non-null value must be passed in,
* and the scan progress will be written to the structure to which the pointer points.
*
* @permission {@code ohos.permission.PRINT}
* @param scannerId The id for querying the image scanning progress of the scanner.
* @param prog The {@link Scan_PictureScanProgress} of scanning pictures, must be a non-null value.
* @return {@link Scan_ERROR_NONE} Indicates the scanner has successfully queried the progress of the scanned image.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_INVALID_PARAMETER} Indicates if the pointer is null or the character string is null.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* {@link SCAN_ERROR_JAMMED} Indicates the document feeder is jammed.
* {@link SCAN_ERROR_NO_DOCS} Indicates the document feeder is out of documents.
* {@link SCAN_ERROR_COVER_OPEN} Indicates the scanner cover is open.
* {@link SCAN_ERROR_IO_ERROR} Indicates an error occurred while communicating with the scanner.
* {@link SCAN_ERROR_NO_MEM} Indicates an insufficent amount of memory is available.
* {@link SCAN_ERROR_DEVICE_BUSY} Indicates the device is busy, the operation should be retried later.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_GetPictureScanProgress(const char* scannerId, Scan_PictureScanProgress* prog);
/**
* @brief This API can be used to exit the scanning service, free the Scan Framework Memory,
* and unregister the callback for scanner discover.
*
* @permission {@code ohos.permission.PRINT}
* @return {@link Scan_ERROR_NONE} Indicates the scan service exit successfully.
* {@link SCAN_ERROR_NO_PERMISSION} Indicates have no permission to use this interface.
* {@link SCAN_ERROR_RPC_FAILURE} Indicates an RPC communication error.
* {@link SCAN_ERROR_SERVER_FAILURE} Indicates An error occurs in the scan process.
* @syscap SystemCapability.Print.PrintFramework
* @since 12
*/
int32_t OH_Scan_Exit();
#ifdef __cplusplus
}
#endif
#endif // OH_SCAN_H
/** @} */

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@ -0,0 +1,42 @@
[
{
"first_introduced": "12",
"name": "OH_Scan_Init"
},
{
"first_introduced": "12",
"name": "OH_Scan_StartScannerDiscovery"
},
{
"first_introduced": "12",
"name": "OH_Scan_OpenScanner"
},
{
"first_introduced": "12",
"name": "OH_Scan_CloseScanner"
},
{
"first_introduced": "12",
"name": "OH_Scan_GetScannerParameter"
},
{
"first_introduced": "12",
"name": "OH_Scan_SetScannerParameter"
},
{
"first_introduced": "12",
"name": "OH_Scan_StartScan"
},
{
"first_introduced": "12",
"name": "OH_Scan_CancelScan"
},
{
"first_introduced": "12",
"name": "OH_Scan_GetPictureScanProgress"
},
{
"first_introduced": "12",
"name": "OH_Scan_Exit"
}
]