.net6.0-windows 调用摄像头拍照录视频
时间: 2023-05-11 07:00:23 浏览: 175
在.NET 6.0中,可以使用Windows API来调用摄像头进行拍照和录制视频。具体步骤如下:
1. 引用相关命名空间:需要使用Windows API进行摄像头的调用,需要在代码文件中添加以下命名空间:
```csharp
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Windows.Forms;
```
2. 调用摄像头进行拍照:使用Windows API中的SendMessage方法指定命令来调用摄像头,如下所示:
```csharp
[DllImport("user32.dll", EntryPoint = "SendMessage")]
public static extern int SendMessage(int hWnd, uint Msg, int wParam, int lParam);
const uint WM_CAP_START = 0x400;
const uint WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10;
const uint WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11;
const uint WM_CAP_SAVEDIB = WM_CAP_START + 25;
const int IDOK = 1;
public void TakePhoto()
{
ProcessStartInfo startInfo = new ProcessStartInfo("C:\\Windows\\System32\\amcap.exe"); // 打开摄像头软件
Process.Start(startInfo);
IntPtr hWnd = IntPtr.Zero;
while (hWnd.ToInt32() == 0)
{
hWnd = FindWindow(null, "AMCap"); // 查找摄像头软件的窗口句柄
Thread.Sleep(100);
}
SendMessage(hWnd.ToInt32(), WM_CAP_DRIVER_CONNECT, 0, 0); // 连接摄像头
SendMessage(hWnd.ToInt32(), WM_CAP_SAVEDIB, 0, 0); // 拍照
SendMessage(hWnd.ToInt32(), WM_CAP_DRIVER_DISCONNECT, 0, 0); // 断开连接摄像头
}
```
3. 调用摄像头进行录制视频:同样是使用Windows API中的SendMessage方法指定命令来调用摄像头,如下所示:
```csharp
[DllImport("user32.dll", EntryPoint = "SendMessage")]
public static extern int SendMessage(int hWnd, uint Msg, int wParam, int lParam);
const uint WM_CAP_START = 0x400;
const uint WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10;
const uint WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11;
const uint WM_CAP_SET_PREVIEW = WM_CAP_START + 50;
const uint WM_CAP_SET_PREVIEWRATE = WM_CAP_START + 52;
const uint WM_CAP_SAVEDIB = WM_CAP_START + 25;
const int IDOK = 1;
public void RecordVideo()
{
ProcessStartInfo startInfo = new ProcessStartInfo("C:\\Windows\\System32\\amcap.exe"); // 打开摄像头软件
Process.Start(startInfo);
IntPtr hWnd = IntPtr.Zero;
while (hWnd.ToInt32() == 0)
{
hWnd = FindWindow(null, "AMCap"); // 查找摄像头软件的窗口句柄
Thread.Sleep(100);
}
SendMessage(hWnd.ToInt32(), WM_CAP_DRIVER_CONNECT, 0, 0); // 连接摄像头
SendMessage(hWnd.ToInt32(), WM_CAP_SET_PREVIEW, 0, 0); // 设置预览
SendMessage(hWnd.ToInt32(), WM_CAP_SET_PREVIEWRATE, 66, 0); // 设置预览帧率
string fileName = "C:\\video.avi";
if (File.Exists(fileName))
File.Delete(fileName);
SendMessage(hWnd.ToInt32(), WM_CAP_SAVEDIB, 0, fileName); // 开始录制
MessageBox.Show("按OK停止录制", "提示", MessageBoxButtons.OK);
SendMessage(hWnd.ToInt32(), WM_CAP_SAVEDIB, 0, 0); // 停止录制
SendMessage(hWnd.ToInt32(), WM_CAP_DRIVER_DISCONNECT, 0, 0); // 断开连接摄像头
}
```
需要注意的是,这两个方法都是在Windows环境下调用摄像头软件进行实现的,因此需要保证在调用的计算机上已经安装了能够调用摄像头的摄像头软件。如果想要在跨平台的环境中使用摄像头,可能需要使用其他的第三方库或者API进行实现。