與眾不同windows phone (22)

Device（裝置）之網路攝影機（硬體快門, 自動對焦, 即時修改捕獲視頻）

介紹

與眾不同 windows phone 7.5 (sdk 7.1) 之裝置

硬體快門

自動對焦、自動對焦到指定的點

即時修改捕獲到的視訊框架

樣本

1、示範如何響應硬體快門

HardwareShutter.xaml

<phone:PhoneApplicationPage      x:Class="Demo.Device.Camera.HardwareShutter"    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"    FontFamily="{StaticResource PhoneFontFamilyNormal}"    FontSize="{StaticResource PhoneFontSizeNormal}"    Foreground="{StaticResource PhoneForegroundBrush}"    SupportedOrientations="Portrait" Orientation="Portrait"    mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"    shell:SystemTray.IsVisible="True">        <Grid x:Name="LayoutRoot" Background="Transparent">         <StackPanel Orientation="Vertical">                <Canvas Width="480" Height="320">                 <Canvas.Background>                     <VideoBrush x:Name="videoBrush">                         <VideoBrush.RelativeTransform>                             <!--把捕獲到的映像正過來-->                             <RotateTransform CenterX="0.5" CenterY="0.5" Angle="90" />                         </VideoBrush.RelativeTransform>                     </VideoBrush>                 </Canvas.Background>             </Canvas>                <TextBlock Name="lblMsg" Text="通過按硬體快門來查看示範效果（半按壓、全按壓、釋放）" TextWrapping="Wrap" />            </StackPanel>     </Grid>    </phone:PhoneApplicationPage>