WPFMediaKit摄像头处理

第三方库：

　　wpfmediakit.dll (wpfmediakit摄像头处理)

　　zing.dll

 

nuget安装这两个第三方dll

 

 

 

项目截图预览：

 

 项目代码：

using system;
using system.collections.generic;
using system.drawing;
using system.io;
using system.linq;
using system.runtime.interopservices;
using system.text;
using system.threading.tasks;
using system.windows;
using system.windows.controls;
using system.windows.data;
using system.windows.documents;
using system.windows.input;
using system.windows.media;
using system.windows.media.imaging;
using system.windows.navigation;
using system.windows.shapes;
using system.windows.threading;
using wpfmediakit.directshow.controls;
using zxing;
using zxing.common;
using zxing.qrcode.internal;

namespace qrcode
{
    /// <summary>
    /// mainwindow.xaml 的交互逻辑
    /// </summary>
    public partial class mainwindow : window
    {

        /// <summary>
        /// zxing 二维码扫描类
        /// </summary>
        barcodereader codereader = new barcodereader();

        /// <summary>
        /// 定时器
        /// </summary>
        dispatchertimer cameratimer = new dispatchertimer();

        public mainwindow()
        {
            initializecomponent();

            // 配置的摄像头名称
            var camera = "lenovo easycamera";
            if (multimediautil.videoinputnames.contains(camera))
            {
                //控件制定摄像头
                vce.videocapturesource = camera;
                cameratimer.isenabled = false;
                cameratimer.interval = new timespan(200); //执行间隔0.2秒
                cameratimer.tick += cameratimer_tick;

            }


        }
        /// <summary>
        /// 计时器方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cameratimer_tick(object sender, eventargs e)
        {
            rendertargetbitmap bmp = new rendertargetbitmap((int)vce.actualwidth, (int)vce.actualheight, 96, 96, pixelformats.default);
            vce.measure(vce.rendersize);
            vce.arrange(new rect(vce.rendersize));
            bmp.render(vce);
            bitmapencoder encoder = new jpegbitmapencoder();
            encoder.frames.add(bitmapframe.create(bmp));
            using (memorystream ms = new memorystream())
            {
                encoder.save(ms);
                bitmap btimap = new bitmap(ms);
                var result = codereader.decode(btimap);//解析条码
                if (result != null)
                {
                    // 1:停止识别
                    cameratimer.stop();
                    vce.play(); 
                    messagebox.show($"识别内容为：{result}");

                }
            }
        }

        private void btnshibie_click(object sender, routedeventargs e)
        {
            cameratimer.start();
        }

        private void btnshnegceng_click(object sender, routedeventargs e)
        {
           var codimg= create("hello world!!");
            imgqr.source = changebitmaptoimagesource(codimg);
        }
        /// <summary>
        /// 创建二维码
        /// </summary>
        /// <param name="msg">二维码中保存的信息</param>
        /// <returns></returns>
        public static bitmap create(string msg)
        {
            multiformatwriter writer = new multiformatwriter();
            dictionary<encodehinttype, object> hint = new dictionary<encodehinttype, object>();
            //设置二维码为utf-8编码
            hint.add(encodehinttype.character_set, "utf-8");
            //设置纠错等级， 高
            hint.add(encodehinttype.error_correction, errorcorrectionlevel.h);
            bitmatrix bm = writer.encode(msg, barcodeformat.qr_code, 200, 120, hint);
            barcodewriter barcodewriter = new barcodewriter();
            bitmap bitmap = barcodewriter.write(bm);
            string codepath = directory.getcurrentdirectory() + "/code.jpg";
            if (file.exists(codepath))
                file.delete(codepath);
            bitmap.save(codepath);
            return bitmap;
        }
        /// <summary>
        /// 从bitmap转换成imagesource
        /// </summary>
        /// <param name="icon"></param>
        /// <returns></returns>
        public static imagesource changebitmaptoimagesource(bitmap bitmap)
        {
            intptr hbitmap = bitmap.gethbitmap();

            imagesource wpfbitmap = system.windows.interop.imaging.createbitmapsourcefromhbitmap(
                hbitmap,
                intptr.zero,
                int32rect.empty,
                bitmapsizeoptions.fromemptyoptions());

            if (!deleteobject(hbitmap))
            {
                throw new system.componentmodel.win32exception();
            }
            return wpfbitmap;
        }

        [dllimport("gdi32.dll", setlasterror = true)]
        private static extern bool deleteobject(intptr hobject);
    }
}

　　

 项目源代码地址：