C#硬件访问（摄像头、麦克风）
#需要引用：AForge类库、Microsoft.DirectX
using System;
using System.Windows.Forms;
namespace CameraTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button5_Click(object sender, EventArgs e)
{
Form2 form = new Form2();
form.Text = "拍照";
form.Show();
}
private void button1_Click(object sender, EventArgs e)
{
Form3 form = new Form3();
form.Text = "声音";
form.Show();
}
}
}
using AForge.Video.DirectShow;
using System;
using System.Drawing;
using System.Windows.Forms;
namespace CameraTest
{
public partial class Form2 : Form
{
private FilterInfoCollection videoDevices;
public Form2()
{
InitializeComponent();
}
private void videoSourcePlayer()
{
VideoCaptureDevice videoCapture = new VideoCaptureDevice(videoDevices[comboBox1.SelectedIndex].MonikerString);
#pragma warning disable CS0612 // 类型或成员已过时
videoCapture.DesiredFrameSize = new Size(320, 240);
#pragma warning restore CS0612 // 类型或成员已过时
#pragma warning disable CS0612 // 类型或成员已过时
videoCapture.DesiredFrameRate = 1;
#pragma warning restore CS0612 // 类型或成员已过时
videoPlayer1.VideoSource = videoCapture;
videoPlayer1.Start();
}
private void button4_Click_1(object sender, EventArgs e)
{
try
{
//枚举视频输入设备
videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
if (videoDevices.Count == 0)
{
throw new ApplicationException();
}
foreach (FilterInfo device in videoDevices)
{
comboBox1.Items.Add(device.Name);
}
comboBox1.SelectedIndex = 0;
}
catch
{
comboBox1.Items.Add("没有视频设备！");
videoDevices = null;
}
}
private void button1_Click_1(object sender, EventArgs e)
{
videoSourcePlayer();
}
private void button3_Click_1(object sender, EventArgs e)
{
//拍照
if (videoPlayer1 == null)
return;
Bitmap bitmap = videoPlayer1.GetCurrentVideoFrame();
saveFileDialog1.Filter = "Jpg 图片|*.jpg|Bmp 图片|*.bmp|Gif 图片|*.gif|Png 图片|*.png|Wmf 图片|*.wmf";
saveFileDialog1.FilterIndex = 0;
saveFileDialog1.RestoreDirectory = true;//保存对话框是否记忆上次打开的目录
saveFileDialog1.CheckPathExists = true;//检查目录
saveFileDialog1.FileName = System.DateTime.Now.ToString("yyyyMMddHHmmss") + "-"; ;//设置默认文件名
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
bitmap.Save(saveFileDialog1.FileName, System.Drawing.Imaging.ImageFormat.Jpeg);// image为要保存的图片
MessageBox.Show(this, "图片保存成功！", "信息提示");
}
bitmap.Dispose();
}
private void button2_Click_1(object sender, EventArgs e)
{
videoPlayer1.SignalToStop();
videoPlayer1.WaitForStop();
this.Close();
}
private void Form2_Load(object sender, EventArgs e)
{}
}
}
using Microsoft.DirectX.DirectSound;
using System;
using System.Threading;
using System.Windows.Forms;
namespace CameraTest
{
public partial class Form3 : Form
{
private const int SAMPLES = 8;
private static int deviceIndex = -1;
private CaptureBuffer buffer=null;
private static Capture cap = null;
private string deviceName = "没有检测到音频输入设备";
///
// *****更改处
///
private static AutoCompleteStringCollection deviceNames;
private Thread liveVolumeThread;
private int sampleDelay = 100;
private int frameDelay = 10;
private static int[] SAMPLE_FORMAT_ARRAY = { SAMPLES, 2, 1 };
public Form3()
{
InitializeComponent();
progressBar1.Maximum = Int16.MaxValue + 1;
CheckForIllegalCrossThreadCalls = false;
}
///