using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; using System.IO; namespace WindowsApplication2 { class Media { [DllImport("winmm.dll", EntryPoint = "mciSendString", CharSet = CharSet.Auto)] private static extern int mciSendString( string lpstrCommand, string lpstrReturnString, int uReturnLength, int hwndCallback ); [DllImport("winmm.dll", EntryPoint = "mciGetDeviceID", CharSet = CharSet.Auto)] private static extern int mciGetDeviceID(string lpstrName); [DllImport("kernel32.dll", CharSet = CharSet.Auto)] public static extern int GetShortPathName( string lpszLongPath, string shortFile, int cchBuffer ); public enum PlayTypeName : byte { File = 1, CDAudio = 2, VCD = 3, RealPlay = 4 } public enum AudioSource : byte { H = 0, L = 1, R = 2 } public enum Playstate : byte { Stopped = 1, Playing = 2, Pause = 3 } public enum PlayStyle : byte { 顺序 = 1, 随机 = 2, 循环 = 3 } public PlayTypeName PlayType; public int Temp; //零时变量 工程中将使用 public String SongName; //储存当前真正播放的歌曲名称 public string PreSongName; public string NextSongName; public int SongIndex; //储存当前播放的歌曲列表的位置 public int totalSong; public PlayStyle PlayerStyle;//播放模式 public int Valume;//音量大小 public AudioSource audiosource; public bool IsSlowly;//播放速度 /// <summary> /// 获取DeviceID /// </summary> /// <returns>返回设备类型</returns> public int GetDeviceID() { return mciGetDeviceID("NOWMUSIC"); } /// <summary> /// 根据文件名，确定设备 /// </summary> /// <param name="ff">文件名</param> /// <returns></returns> public string GetDriverID(string ff) { string result = ""; ff = ff.ToUpper().Trim(); switch (ff.Substring(ff.Length - 3)) { case "MID": result = "Sequencer"; break; case "RMI": result = "Sequencer"; break; case "IDI": result = "Sequencer"; break; case "WAV": result = "Waveaudio"; break; case "ASX": result = "MPEGVideo2"; break; case "IVF": result = "MPEGVideo2"; break; case "LSF": result = "MPEGVideo2"; break; case "LSX": result = "MPEGVideo2"; break; case "P2V": result = "MPEGVideo2"; break; case "WAX": result = "MPEGVideo2"; break; case "WVX": result = "MPEGVideo2"; break; case ".WM": result = "MPEGVideo2"; break; case "WMX": result = "MPEGVideo2"; break; case "WMP": result = "MPEGVideo2"; break; case ".RM": result = "RealPlay"; break; case "RAM": result = "RealPlay"; break; case ".RA": result = "RealPlay"; break; case "MVB": result = "RealPlay"; break; default: result = "MPEGVideo"; break; } return result; } /// <summary> /// 打开MCI设备， /// </summary> /// <param name="FileName">要打开的文件名</param> /// <param name="Handle">mci设备的窗口句柄</param> /// <returns>传值代表成功与否</returns> public bool OpenMusic(string FileName, IntPtr Handle) { bool result = false; string MciCommand; int RefInt; CloseMusic(); ShortPathName = ""; ShortPathName = ShortPathName.PadLeft(260, Convert.ToChar(" ")); RefInt=GetShortPathName(FileName, ShortPathName, ShortPathName .Length ); ShortPathName = GetCurrPath(ShortPathName); string DriverID = GetDriverID(ShortPathName); if (DriverID == "RealPlay") return false; MciCommand = string.Format("open {0} type {1} alias NOWMUSIC ", ShortPathName, DriverID);//"open " & RefShortName & " type " & DriverID & " alias NOWMUSIC" if (DriverID == "AVIVideo" || DriverID == "MPEGVideo" || DriverID == "MPEGVideo2") { if (Handle != IntPtr.Zero) { MciCommand = MciCommand + string.Format(" parent {0} style child ", Handle);// " parent " & Hwnd & " style child" } else { MciCommand = MciCommand + " style overlapped "; } } TemStr = ""; TemStr = TemStr.PadLeft(128, Convert.ToChar(" ")); RefInt = mciSendString(MciCommand, null, 0, 0); mciSendString("set NOWMUSIC time format milliseconds", null, 0, 0); if (RefInt == 0) { result = true; SongName = Path.GetFileNameWithoutExtension(FileName); } return result; } /// <summary> /// 播放音乐 /// </summary> /// <returns></returns> public bool PlayMusic() { bool result = false; int RefInt = mciSendString("play NOWMUSIC", null, 0, 0); if (RefInt == 0) { result = true; SetValume(Valume);//当前音量大小 //检测播放速度 if (IsSlowly) SetSpeed(800); else SetSpeed(1200); //检测声道 switch ((int)audiosource) { case 0: SetAudioSource(AudioSource.H); break; case 1: SetAudioSource(AudioSource.L); break; case 2: SetAudioSource(AudioSource.R); break; } } return result; } /// <summary> /// 设置声音大小 /// </summary> /// <param name="Valume">音量大小</param> /// <returns></returns> public bool SetValume(int Valume) { bool result = false; string MciCommand = string.Format("setaudio NOWMUSIC volume to {0}", Valume); int RefInt = mciSendString(MciCommand, null, 0, 0); if (RefInt == 0) { result = true; } return result; } /// <summary> /// 设置播放速度 /// </summary> /// <param name="Speed"></param> /// <returns></returns> public bool SetSpeed(int Speed) { bool result = false; string MciCommand = string.Format("set NOWMUSIC speed to {0}", Speed); int RefInt = mciSendString(MciCommand, null, 0, 0); if (RefInt == 0) result = true; return result; } /// <summary> /// 设置声道 /// </summary> /// <param name="audioSource"></param> /// <returns></returns> public bool SetAudioSource(AudioSource audioSource) { bool result = false; string strSource = ""; switch ((int)audioSource) { case 1: strSource = "left"; break; case 2: strSource = "right"; break; case 0: strSource = "stereo"; break; } int RefInt = mciSendString("setaudio NOWMUSIC source to " + strSource, null, 0, 0); if (RefInt == 0) result = true; return result; } /// <summary> /// 设置静音 True为静音，FALSE为取消静音 /// </summary> /// <param name="AudioOff"></param> /// <returns></returns> public bool SetAudioOnOff(bool AudioOff) { bool resut = false; string OnOff; if (AudioOff) OnOff = "off"; else OnOff = "on"; int RefInt = mciSendString("setaudio NOWMUSIC " + OnOff, null, 0, 0); if (RefInt == 0) resut = true; return resut; } /// <summary> /// 关闭媒体 /// </summary> /// <returns></returns> public bool CloseMusic() { int RefInt = mciSendString("close NOWMUSIC", null, 0, 0); if (RefInt == 0) return true; return false; } /// <summary> /// 暂停播放 /// </summary> /// <returns></returns> public bool PauseMusic() { int RefInt = mciSendString("pause NOWMUSIC", null, 0, 0); if (RefInt == 0) return true; return false; } /// <summary> /// 获得当前媒体的状态是不是在播放 /// </summary> /// <returns></returns> public Playstate IsPlaying() { Playstate isPlaying=Playstate .Stopped ; try { durLength = ""; durLength = durLength.PadLeft(128, Convert.ToChar(" ")); int RefInt= mciSendString("status NOWMUSIC mode", durLength, durLength.Length, 0); durLength = durLength.Trim(); if (durLength.Substring(0, 7) == "playing" || durLength.Substring(0, 2) == "播放") isPlaying = Playstate.Playing; else if (durLength.Substring(0, 7) == "stopped" || durLength.Substring(0, 2) == "停止") isPlaying = Playstate.Stopped; else isPlaying = Playstate.Pause; } catch { } return isPlaying; } /// <summary> /// 获取当前播放进度 毫秒 /// </summary> /// <returns></returns> public int GetMusicPos() { durLength = ""; durLength = durLength.PadLeft(128, Convert.ToChar(" ")); mciSendString("status NOWMUSIC position", durLength ,durLength .Length , 0); durLength = durLength.Trim(); if (string.IsNullOrEmpty(durLength)) return 0; else return (int)(Convert.ToDouble(durLength) ); } /// <summary> /// 获取当前播放进度 格式 00：00:00 /// </summary> /// <returns></returns> public string GetMusicPosString() { durLength = ""; durLength = durLength.PadLeft(128, Convert.ToChar(" ")); mciSendString("status NOWMUSIC position", durLength, durLength.Length, 0); durLength = durLength.Trim(); if (string.IsNullOrEmpty(durLength)) return "00:00:00"; else { int s = Convert.ToInt32(durLength)/1000; int h = s /3600; int m = (s - (h * 3600)) / 60; s = s - (h * 3600 + m * 60); return string.Format("{0:D2}:{1:D2}:{2:D2}", h, m, s); } } /// <summary> /// 获取媒体的长度 /// </summary> /// <returns></returns> public int GetMusicLength() { durLength = ""; durLength = durLength.PadLeft(128, Convert.ToChar(" ")); mciSendString("status NOWMUSIC length", durLength, durLength.Length, 0); durLength = durLength.Trim(); if (string.IsNullOrEmpty(durLength)) return 0; else return Convert.ToInt32(durLength); } /// <summary> /// 获取媒体的长度 00:00:00 /// </summary> /// <returns></returns> public string GetMusicLengthString() { durLength = ""; durLength = durLength.PadLeft(128, Convert.ToChar(" ")); mciSendString("status NOWMUSIC length", durLength, durLength.Length, 0); durLength = durLength.Trim(); if (string.IsNullOrEmpty(durLength)) return "00:00:00"; else { int s = Convert.ToInt32(durLength) / 1000; int h = s / 3600; int m = (s - (h * 3600)) / 60; s = s - (h * 3600 + m * 60); return string.Format("{0:D2}:{1:D2}:{2:D2}", h, m, s); } } public bool SetMusicPos(int Position) { string MciCommand = string.Format("seek NOWMUSIC to {0}", Position ); int RefInt = mciSendString( MciCommand , null, 0, 0); if (RefInt == 0) return true; else return false; } private string GetCurrPath(string name) { if (name.Length < 1) return ""; name = name.Trim(); name = name.Substring(0, name.Length - 1); return name; } [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] private string ShortPathName = ""; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)] private string durLength = ""; [MarshalAs(UnmanagedType.LPTStr, SizeConst = 128)] private string TemStr = ""; } }