From eb5f0f95c4c3229a830e64461e76021c23cdff96 Mon Sep 17 00:00:00 2001
From: luoliangyi <87842688@qq.com>
Date: Tue, 14 Feb 2023 11:16:15 +0800
Subject: [PATCH] =?UTF-8?q?HGScannerLib=E5=A2=9E=E5=8A=A0=E8=8E=B7?=
 =?UTF-8?q?=E5=8F=96=E8=AE=BE=E5=A4=87=E7=8A=B6=E6=80=81=E7=9A=84=E6=8E=A5?=
 =?UTF-8?q?=E5=8F=A3?=
MIME-Version: 1.0
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---
 build/windows/HGScannerLib/HGScannerLib.def |  1 +
 sdk/scannerlib/HGLibDeviceImpl.cpp          | 10 ++++++++++
 sdk/scannerlib/HGLibDeviceImpl.hpp          |  1 +
 sdk/scannerlib/HGScannerLib.cpp             | 11 +++++++++++
 sdk/scannerlib/HGScannerLib.h               |  3 +++
 5 files changed, 26 insertions(+)

diff --git a/build/windows/HGScannerLib/HGScannerLib.def b/build/windows/HGScannerLib/HGScannerLib.def
index 87a09e2d..7cf89645 100644
--- a/build/windows/HGScannerLib/HGScannerLib.def
+++ b/build/windows/HGScannerLib/HGScannerLib.def
@@ -22,6 +22,7 @@ HGLib_ReleaseDeviceParamGroupList
 HGLib_ReleaseDeviceParam
 HGLib_ResetDeviceParam
 HGLib_DeviceIsPaperOn
+HGLib_GetDeviceStatus
 HGLib_DeviceRestart
 HGLib_DeviceShutDown
 HGLib_StartDeviceScan
diff --git a/sdk/scannerlib/HGLibDeviceImpl.cpp b/sdk/scannerlib/HGLibDeviceImpl.cpp
index 6a1b2470..f163ba1f 100644
--- a/sdk/scannerlib/HGLibDeviceImpl.cpp
+++ b/sdk/scannerlib/HGLibDeviceImpl.cpp
@@ -948,6 +948,16 @@ HGBool HGLibDeviceImpl::IsPaperOn()
 	return HGFALSE;
 }
 
+HGInt HGLibDeviceImpl::GetStatus()
+{
+	SANE_Bool isOn = SANE_FALSE;
+	unsigned int len = sizeof(SANE_Bool);
+	SANE_Status status = sane_io_control(m_devHandle, IO_CTRL_CODE_GET_PAPER_ON, &isOn, &len);
+	if (SANE_STATUS_GOOD == status)
+		return isOn ? 1 : 0;
+	return -1;
+}
+
 HGBool HGLibDeviceImpl::Restart()
 {
 	SANE_Power stat = SANE_POWER_RESTART;
diff --git a/sdk/scannerlib/HGLibDeviceImpl.hpp b/sdk/scannerlib/HGLibDeviceImpl.hpp
index f0abb594..88c27958 100644
--- a/sdk/scannerlib/HGLibDeviceImpl.hpp
+++ b/sdk/scannerlib/HGLibDeviceImpl.hpp
@@ -32,6 +32,7 @@ public:
 	static HGBool ReleaseParam(HGLibDeviceParam* param);
 	HGBool ResetParam();
 	HGBool IsPaperOn();
+	HGInt GetStatus();
 	HGBool Restart();
 	HGBool ShutDown();
 	HGBool StartScan(HGLibDeviceScanEventFunc eventFunc, HGPointer eventParam,
diff --git a/sdk/scannerlib/HGScannerLib.cpp b/sdk/scannerlib/HGScannerLib.cpp
index 0a2e4fe9..615d6936 100644
--- a/sdk/scannerlib/HGScannerLib.cpp
+++ b/sdk/scannerlib/HGScannerLib.cpp
@@ -252,6 +252,17 @@ HGBool HGAPI HGLib_DeviceIsPaperOn(HGLibDevice device)
 	return deviceImpl->IsPaperOn();
 }
 
+HGInt HGAPI HGLib_GetDeviceStatus(HGLibDevice device)
+{
+	if (NULL == device)
+	{
+		return -1;
+	}
+
+	HGLibDeviceImpl* deviceImpl = (HGLibDeviceImpl*)device;
+	return deviceImpl->GetStatus();
+}
+
 HGBool HGAPI HGLib_DeviceRestart(HGLibDevice device)
 {
 	if (NULL == device)
diff --git a/sdk/scannerlib/HGScannerLib.h b/sdk/scannerlib/HGScannerLib.h
index 62b25f7e..516e2af2 100644
--- a/sdk/scannerlib/HGScannerLib.h
+++ b/sdk/scannerlib/HGScannerLib.h
@@ -527,6 +527,9 @@ HGEXPORT HGBool HGAPI HGLib_ResetDeviceParam(HGLibDevice device);
 /* 设备是否有纸 */
 HGEXPORT HGBool HGAPI HGLib_DeviceIsPaperOn(HGLibDevice device);
 
+/* 获取设备状态, -1表示异常，0表示无纸，1表示有纸 */
+HGEXPORT HGInt HGAPI HGLib_GetDeviceStatus(HGLibDevice device);
+
 /* 重启设备 */
 HGEXPORT HGBool HGAPI HGLib_DeviceRestart(HGLibDevice device);