同系列文章:
功能说明
- 基于WPFMediaKit实现视频与图像抓取
开发工具
- Visual Studio v2015
- .NET Framework 4 Client Profile
- WPFMediaKit 2.1
源代码下载
源代码
MainWindow.xaml
<Window x:Class="Splash.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:WPFMediaKit="clr-namespace:WPFMediaKit.DirectShow.Controls;assembly=WPFMediaKit" xmlns:my="clr-namespace:Splash;assembly=FingerPictureBox" Title="FaceCapture-WPFMediaKit-WPF" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" SizeToContent="WidthAndHeight" WindowStartupLocation="CenterScreen" ResizeMode="CanMinimize" AllowDrop="True" Closing="Window_Closing"> <Grid AllowDrop="True"> <Grid.ColumnDefinitions> <ColumnDefinition /> <ColumnDefinition /> </Grid.ColumnDefinitions> <Grid Grid.Column="0" AllowDrop="False"> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition/> <RowDefinition Height="Auto" /> </Grid.RowDefinitions> <ComboBox Grid.Row="0" Name="comboBoxVideoDevices" FontSize="16" Margin="8,4" IsReadOnly="True"/> <WPFMediaKit:VideoCaptureElement Grid.Row="1" x:Name="vce" LoadedBehavior="Close" Stretch="Fill" FPS="30" Margin="8,0"/> <StackPanel Grid.Row="2" Orientation="Horizontal" Height="60" HorizontalAlignment="Stretch" > <Button Name="button_Play" Height="40" Width="140" Margin="40,4,20,10" Click="button_Play_Click"> <StackPanel Orientation="Horizontal" VerticalAlignment="Center"> <Image Name="image_Play" Width="32" Height="32" /> <Label Name="label_Play" Content="开启视频" VerticalContentAlignment="Center" FontSize="16" Padding="4" /> </StackPanel> </Button> <Button Name="button_Capture" Height="40" Width="140" Margin="40,4,40,10" Click="button_Capture_Click"> <StackPanel Orientation="Horizontal" VerticalAlignment="Center"> <Image Name="image_Capture" Width="32" Height="32" /> <Label Content="抓拍图像" VerticalContentAlignment="Center" FontSize="16" Padding="4"/> </StackPanel> </Button> </StackPanel> </Grid> <Grid Grid.Column="1"> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition /> </Grid.RowDefinitions> <StackPanel Grid.Row="0" Orientation="Horizontal"> <my:FingerPictureBox Height="210" Name="fingerPictureBox1" Width="210" BorderThickness="5" BorderBrush="DarkGreen" Margin="5"/> <my:FingerPictureBox Height="210" Name="fingerPictureBox2" Width="210" BorderThickness="5" BorderBrush="DarkGreen" Margin="5"/> </StackPanel> <StackPanel Grid.Row="1" Orientation="Horizontal"> <my:FingerPictureBox Height="210" Name="fingerPictureBox3" Width="210" BorderThickness="5" BorderBrush="DarkGreen" Margin="5"/> <my:FingerPictureBox Height="210" Name="fingerPictureBox4" Width="210" BorderThickness="5" BorderBrush="DarkGreen" Margin="5"/> </StackPanel> </Grid> </Grid> </Window>
MainWindow.xaml.cs
/* ---------------------------------------------------------- 文件名称:MainWindow.xaml.cs 作者:秦建辉 微信:splashcn 博客:http://www.firstsolver.com/wordpress/ 开发环境: Visual Studio V2015 .NET Framework 4 Client Profile WPFMediaKit 2.1 版本历史: V1.0 2016年11月01日 基于WPFMediaKit实现视频与图像抓取 参考资料: https://github.com/Sascha-L/WPF-MediaKit ------------------------------------------------------------ */ using System; using System.Windows; using System.Windows.Media; using System.Windows.Media.Imaging; using WPFMediaKit.DirectShow.Controls; namespace Splash { /// <summary> /// MainWindow.xaml 的交互逻辑 /// </summary> public partial class MainWindow : Window { private BitmapSource ImagePlay; private BitmapSource ImageStop; public MainWindow() { InitializeComponent(); // 设置窗体图标 this.Icon = System.Windows.Interop.Imaging.CreateBitmapSourceFromHIcon( Properties.Resources.FingerPictureBox.Handle, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); // 图像源初始化 ImagePlay = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( Properties.Resources.Button_Play_icon2.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); ImageStop = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( Properties.Resources.Button_Stop_icon.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); // 设置按钮图像 image_Play.Source = ImagePlay; image_Capture.Source = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( Properties.Resources.capture.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); // 设置窗体装载后事件处理器 this.Loaded += new RoutedEventHandler(MainWindow_Loaded); } private void MainWindow_Loaded(object sender, RoutedEventArgs e) { vce.Width = vce.ActualWidth; vce.Height = vce.ActualHeight; // 设定初始视频设备 comboBoxVideoDevices.ItemsSource = MultimediaUtil.VideoInputNames; if (comboBoxVideoDevices.Items.Count > 0) { comboBoxVideoDevices.SelectedIndex = 0; if (comboBoxVideoDevices.Items.Count == 1) comboBoxVideoDevices.IsEnabled = false; } else { button_Play.IsEnabled = false; button_Capture.IsEnabled = false; } // 设置图片框初始图像 BitmapSource bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap( Properties.Resources.noimage.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); fingerPictureBox1.InitialImage = bs; fingerPictureBox2.InitialImage = bs; fingerPictureBox3.InitialImage = bs; fingerPictureBox4.InitialImage = bs; } private void button_Play_Click(object sender, RoutedEventArgs e) { if (image_Play.Source == ImagePlay) { if (comboBoxVideoDevices.SelectedIndex != -1) { // 开启视频 vce.VideoCaptureSource = (string)comboBoxVideoDevices.SelectedItem; vce.Play(); // 改变按钮为“停止”状态 image_Play.Source = ImageStop; label_Play.Content = "停止"; button_Capture.IsEnabled = true; // 允许拍照 } } else { // 停止视频 vce.Stop(); // 改变按钮为“开始”状态 image_Play.Source = ImagePlay; label_Play.Content = "开启视频"; button_Capture.IsEnabled = false; // 关闭拍照 } } private void button_Capture_Click(object sender, RoutedEventArgs e) { // 进行拍照 for (Int32 i = 1; i <= 4; i++) { object box = this.FindName("fingerPictureBox" + i); if (box is FingerPictureBox) { if ((box as FingerPictureBox).ActiveImage == (box as FingerPictureBox).InitialImage) { 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); // 更新图像 (box as FingerPictureBox).ActiveImage = bmp; break; } } } } private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e) { vce.Close(); } } }