From 18a2552b5a6ea49e6bdf35ca4e22fd96eff351b9 Mon Sep 17 00:00:00 2001
From: luoliangyi <87842688@qq.com>
Date: Fri, 13 Jan 2023 10:04:10 +0800
Subject: [PATCH] =?UTF-8?q?HGScannerLib=20C#demo=E5=A2=9E=E5=8A=A0?=
 =?UTF-8?q?=E8=BD=ACBitmap=E7=A4=BA=E4=BE=8B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../huagao/c#/WindowsFormsApp1/Form1.cs       | 34 +++++++++++++++++++
 .../c#/WindowsFormsApp1/HGScannerLib.cs       | 16 +++++++++
 2 files changed, 50 insertions(+)

diff --git a/test/scannerlib/huagao/c#/WindowsFormsApp1/Form1.cs b/test/scannerlib/huagao/c#/WindowsFormsApp1/Form1.cs
index 8b733879..0c3ffee3 100644
--- a/test/scannerlib/huagao/c#/WindowsFormsApp1/Form1.cs
+++ b/test/scannerlib/huagao/c#/WindowsFormsApp1/Form1.cs
@@ -32,6 +32,40 @@ namespace WindowsFormsApp1
                 saveParam.tiffJpegQuality = 80;
                 saveParam.ocr = 0;
                 HGScannerLib.HGLib_SaveImage(image, StringToUtf8("2.jpg"), ref saveParam);
+
+                IntPtr imageData = HGScannerLib.HGLib_GetImageData(image);
+
+                HGScannerLib.HGLibImageInfo imageInfo;
+                imageInfo.width = 0;
+                imageInfo.height = 0;
+                imageInfo.type = 0;
+                imageInfo.widthStep = 0;
+                imageInfo.origin = 0;
+                HGScannerLib.HGLib_GetImageInfo(image, ref imageInfo);
+
+                Bitmap curBitmap = new Bitmap((int)imageInfo.width, (int)imageInfo.height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
+
+                Rectangle rect = new Rectangle(0, 0, (int)imageInfo.width, (int)imageInfo.height);
+
+                System.Drawing.Imaging.BitmapData bmpData = curBitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
+                unsafe
+                {
+                    byte* dest = (byte*)(bmpData.Scan0);
+                    byte* src = (byte*)imageData;
+                    for (int i = 0; i < (int)imageInfo.height; i++)
+                    {
+                        for (int j = 0; j < (int)imageInfo.width; j++)
+                        {
+                            dest[i * bmpData.Stride + j * 3 + 0] = src[i * imageInfo.widthStep + j * 3 + 2];
+                            dest[i * bmpData.Stride + j * 3 + 1] = src[i * imageInfo.widthStep + j * 3 + 1];
+                            dest[i * bmpData.Stride + j * 3 + 2] = src[i * imageInfo.widthStep + j * 3 + 0];
+                        }
+                    }
+                }
+                curBitmap.UnlockBits(bmpData);
+
+                curBitmap.Save("3.jpg");
+
                 HGScannerLib.HGLib_ReleaseImage(image);
             }
 
diff --git a/test/scannerlib/huagao/c#/WindowsFormsApp1/HGScannerLib.cs b/test/scannerlib/huagao/c#/WindowsFormsApp1/HGScannerLib.cs
index 6341778b..c0678c89 100644
--- a/test/scannerlib/huagao/c#/WindowsFormsApp1/HGScannerLib.cs
+++ b/test/scannerlib/huagao/c#/WindowsFormsApp1/HGScannerLib.cs
@@ -18,6 +18,16 @@ namespace WindowsFormsApp1
             public Int32 ocr;
         }
 
+        [StructLayout(LayoutKind.Sequential, Pack = 4)]
+        public struct HGLibImageInfo
+        {
+            public UInt32 width;
+            public UInt32 height;
+            public UInt32 type;
+            public UInt32 widthStep;
+            public UInt32 origin;
+        }
+
         [StructLayout(LayoutKind.Sequential, Pack = 4)]
         public struct HGLibDeviceIntValueList
         {
@@ -97,6 +107,12 @@ namespace WindowsFormsApp1
         [DllImport("HGScannerLib.dll", EntryPoint = "HGLib_LoadImage")]
         public static extern UIntPtr HGLib_LoadImage(IntPtr filePath);
 
+        [DllImport("HGScannerLib.dll", EntryPoint = "HGLib_GetImageData")]
+        public static extern IntPtr HGLib_GetImageData(UIntPtr image);
+
+        [DllImport("HGScannerLib.dll", EntryPoint = "HGLib_GetImageInfo")]
+        public static extern Int32 HGLib_GetImageInfo(UIntPtr image, ref HGLibImageInfo imageInfo);
+
         [DllImport("HGScannerLib.dll", EntryPoint = "HGLib_SaveImage")]
         public static extern Int32 HGLib_SaveImage(UIntPtr image, IntPtr filePath, ref HGLibSaveImageParam saveParam);