#region 音频转换
private int AudioIntervalTime = 100, iAudio = 0;
private string strPath = "D:\\web\\XXXX\\voice\\";
/// <summary>
/// 线程委托
/// </summary>
private delegate void DelegateAudio();
/// <summary>
/// 定时器
/// </summary>
System.Threading.Timer timeAudio;
/// <summary>
/// 定义线程
/// </summary>
private void TimeThreadAudio()
{
Thread thread = new Thread(ThreadAudio);
thread.Name = "Audio";
thread.IsBackground = true;
thread.Start();
}
/// <summary>
/// 线程委托
/// </summary>
private void ThreadAudio()
{
DelegateAudio dp = new DelegateAudio(ThreadAudioFunction);
dp.BeginInvoke(null, null);
}
/// <summary>
/// 线程定时调整
/// </summary>
private void ThreadAudioFunction()
{
timeAudio = new System.Threading.Timer(new System.Threading.TimerCallback(AudioFunction), null, 0, 0);
}
/// <summary>
/// 线程工作方法体
/// </summary>
/// <param name="sender"></param>
private void AudioFunction(object sender)
{
timeAudio.Change(System.Threading.Timeout.Infinite, System.Threading.Timeout.Infinite);
try
{
Dictionary<string, string> list = new RedisTool().GetAllEntriesFromHash(SysConst.str_H_Rd_AudioConvert);
foreach (var item in list)
{
string fileName = strPath + item.Key;
string targetFileName = strPath + item.Key.Replace("amr","mp3"); ;
WavConvertToAmrHelp toamr = new WavConvertToAmrHelp();
toamr.ConvertToAmr(System.Windows.Forms.Application.StartupPath, fileName, targetFileName);
ShowContent(string.Format("当前时间：{0}；音频文件:{1}；转换成功；\r\n", DateTime.Now.ToString(), item.Key), rtbAudioContent, iAudio++);
new RedisTool().RemoveEntryFromHash(SysConst.str_H_Rd_AudioConvert, item.Key);
}
}
catch (Exception ex)
{
LogHelper.Save(ex);
ShowContent(DateTime.Now.ToString() + "\r\n" + ex.ToString() + "\r\n", rtbAudioContent, iAudio);
}
timeAudio.Change(AudioIntervalTime, AudioIntervalTime);
}
#endregion
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; namespace SZ.Company.Common { /// <summary> /// 音频转换工具类 /// </summary> public class WavConvertToAmrHelp { /// <summary> /// 将Wav音频转成Amr手机音频 /// </summary> /// <param name="applicationPath">ffmeg.exe文件路径</param> /// <param name="fileName">WAV文件的路径(带文件名)</param> /// <param name="targetFilName">生成目前amr文件路径（带文件名）</param> public void ConvertToAmr(string applicationPath, string fileName, string targetFilName) { string c = applicationPath + @"\ffmpeg.exe -y -i " + fileName + " -ar 8000 -ab 12.2k -ac 1 " + targetFilName; Cmd(c); } /// <summary> /// 执行Cmd命令 /// </summary> private void Cmd(string c) { try { System.Diagnostics.Process process = new System.Diagnostics.Process(); process.StartInfo.FileName = "cmd.exe"; process.StartInfo.UseShellExecute = false; process.StartInfo.CreateNoWindow = true; process.StartInfo.RedirectStandardOutput = true; process.StartInfo.RedirectStandardInput = true; process.Start(); process.StandardInput.WriteLine(c); process.StandardInput.AutoFlush = true; process.StandardInput.WriteLine("exit"); StreamReader reader = process.StandardOutput;//截取输出流 process.WaitForExit(); } catch { } } /// <summary> /// 获取文件的byte[] /// </summary> /// <param name="fileName"></param> /// <returns></returns> public byte[] GetFileByte(string fileName) { FileStream pFileStream = null; byte[] pReadByte = new byte[0]; try { pFileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read); BinaryReader r = new BinaryReader(pFileStream); r.BaseStream.Seek(0, SeekOrigin.Begin); //将文件指针设置到文件开 pReadByte = r.ReadBytes((int)r.BaseStream.Length); return pReadByte; } catch { return pReadByte; } finally { if (pFileStream != null) pFileStream.Close(); } } /// <summary> /// 将文件的byte[]生成文件 /// </summary> /// <param name="pReadByte"></param> /// <param name="fileName"></param> /// <returns></returns> public bool writeFile(byte[] pReadByte, string fileName) { FileStream pFileStream = null; try { pFileStream = new FileStream(fileName, FileMode.OpenOrCreate); pFileStream.Write(pReadByte, 0, pReadByte.Length); } catch { return false; } finally { if (pFileStream != null) pFileStream.Close(); } return true; } } }
原文：http://www.cnblogs.com/wdkshy/p/5117374.html