学步园

OpenNETCF提供了方便、强大的基于设备开发库，利用它，可以方便的进行录音实现。

三个功能：启动录音、停止录音、播放录音

 

using System;

using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
//using OpenNETCF.Media;
using System.IO;
using OpenNETCF.Media.WaveAudio;

namespace RecorderTest
{
    public partial class MainForm : Form
    {
        private Stream recStream;
        private Recorder recorder = new Recorder();
        private Player player = new Player();
        int counter = 0;
        string filename = "test.wav";
        Status status = Status.None;
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {

        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            //开始录音
            status = Status.Recordting; //设置状态为正在录音中
            counter = 0;
            this.timer1.Enabled = true;
            RecordStart(GetPath(filename));
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            //停止录音
            status = Status.None; //设置当前状态为无
            RecordStop();
            this.timer1.Enabled = false;
        }

        private void btnPlay_Click(object sender, EventArgs e)
        {
            //播放录音 
            status = Status.Playing; //设置当前状态为正在播放
            Play(GetPath(filename));
        }

        /// <summary>
        /// 开始录音
        /// </summary>
        /// <param name="recordFile"></param>
        public void RecordStart(String recordFile)
        {
            try
            {
                //
                if (File.Exists(recordFile))
                {
                    File.Delete(recordFile);
                }
                recStream = File.OpenWrite(recordFile);
                recorder.RecordFor(recStream, 60 * 10, SoundFormats.Mono8bit11kHz);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
        /// <summary>
        /// 停止录音
        /// </summary>
        public void RecordStop()
        {
            while (recorder.Recording)
            {
                recorder.Stop();
                System.Windows.Forms.Application.DoEvents();
            }
        }
        /// <summary>
        /// 播放录音
        /// </summary>
        /// <param name="recordFile"></param>
        public void Play(String recordFile)
        {
            this.timer1.Enabled = true;
            counter = 0;
            Stream stream = File.OpenRead(recordFile);
            player.Play(stream);
        }
        /// <summary>
        /// 获取当前程序路径
        /// </summary>
        /// <param name="filename"></param>
        /// <returns></returns>
        private static string GetPath(string filename)
        {
            string CurrentPath = System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase;
            CurrentPath = Path.GetDirectoryName(CurrentPath);
            return Path.Combine(CurrentPath, filename);
        }
        /// <summary>
        /// 时间定时事件
        /// </summary>
        private void timer1_Tick(object sender, EventArgs e)
        {
            if (status==Status.Recordting) //当前状态为：正在录音
            {
                this.counter++;
                this.labTime.Text = this.IntToTimeFormat(this.counter);
            }
            else if (status == Status.Playing)  //当前状态为：正在播放
            {

                if (player.Playing)
                {
                    this.counter++;
                    this.labTime.Text = this.IntToTimeFormat(this.counter);
                }
                else
                {
                    this.timer1.Enabled = false;
                }
            }
            else
            { this.timer1.Enabled = false; }
        }
        /// <summary>
        /// 格式化时间 mm:ss
        /// </summary>
        /// <param name="argInt"></param>
        /// <returns></returns>
        private string IntToTimeFormat(int argInt)
        {
            string str = "";
            int num = 0;
            str = str + ((int)Math.Floor((double)(argInt / 60))).ToString() + ":";
            num = argInt % 60;
            return (str + num.ToString("00"));
        }
    }
    /// <summary>
    /// 当前状态
    /// </summary>
    enum Status
    {
        /// <summary>
        /// 无状态
        /// </summary>
        None,
        /// <summary>
        /// 正在录音
        /// </summary>
        Recordting,
        /// <summary>
        /// 正在播放
        /// </summary>
        Playing
    }
}