/// <summary>
/// 获取wav文件
/// </summary>
/// <param name="path">文件路径</param>
/// <returns></returns>
public static WaveInfo GetWavInfo(string path)
{
try
{
//获取播放时间
WaveInfo wavinfo = WaveFile.Open(path);
int result = Convert.ToInt32(wavinfo.PlayTime);
return(wavinfo);
}
catch
{
return(null);
}
}
/// <summary>
/// 追加文件
/// </summary>
/// <param name="destWaveFileName"></param>
/// <param name="sourceWaveFileName"></param>
/// <returns></returns>
public static bool Append(string destWaveFileName, string sourceWaveFileName, ref string errorInfo)
{
//1.将文件读入到内存中
WaveInfo destWaveInfo = Open(destWaveFileName);
if (destWaveInfo == null)
{
errorInfo = destWaveFileName + "文件不能打开";
return(false);
}
WaveInfo sourceWaveInfo = Open(sourceWaveFileName);
if (sourceWaveInfo == null)
{
errorInfo = sourceWaveFileName + "文件不能打开";
return(false);
}
//2.追加文件
return(Append(destWaveInfo, sourceWaveInfo, ref errorInfo));
}
/// <summary>
/// 追加文件
/// </summary>
/// <param name="destWaveInfo">目标文件</param>
/// <param name="sourceWaveInfo">源文件</param>
/// <param name="errorInfo">返回出错信息</param>
/// <returns></returns>
public static bool Append(WaveInfo destWaveInfo, WaveInfo sourceWaveInfo, ref string errorInfo)
{
//1.判断文件格式是否正确
if (destWaveInfo.FormatBlock.FormatType != sourceWaveInfo.FormatBlock.FormatType ||
destWaveInfo.FormatBlock.ChannelCount != sourceWaveInfo.FormatBlock.ChannelCount ||
destWaveInfo.FormatBlock.SamlesPerSec != sourceWaveInfo.FormatBlock.SamlesPerSec)
{
errorInfo = "源文件与目标文件格式不正确";
return(false);
}
//2.根据文件数据块的类型，将源数据追加到目的数据
if (sourceWaveInfo.FackBlock.ID[0] == sourceWaveInfo.FackBlock.FactTag[0] &&
sourceWaveInfo.FackBlock.ID[1] == sourceWaveInfo.FackBlock.FactTag[1] &&
sourceWaveInfo.FackBlock.ID[2] == sourceWaveInfo.FackBlock.FactTag[2] &&
sourceWaveInfo.FackBlock.ID[3] == sourceWaveInfo.FackBlock.FactTag[3])
{
destWaveInfo.RiffBlock.Size += sourceWaveInfo.FackBlock.Size;
destWaveInfo.FackBlock.Size += sourceWaveInfo.FackBlock.Size;
}
if (sourceWaveInfo.DataBlock.ID[0] == sourceWaveInfo.DataBlock.DataTag[0] &&
sourceWaveInfo.DataBlock.ID[1] == sourceWaveInfo.DataBlock.DataTag[1] &&
sourceWaveInfo.DataBlock.ID[2] == sourceWaveInfo.DataBlock.DataTag[2] &&
sourceWaveInfo.DataBlock.ID[3] == sourceWaveInfo.DataBlock.DataTag[3])
{
destWaveInfo.RiffBlock.Size += sourceWaveInfo.DataBlock.Size;
destWaveInfo.DataBlock.Size += sourceWaveInfo.DataBlock.Size;
}
byte[] tatolData = new byte[destWaveInfo.Data.Length + sourceWaveInfo.Data.Length];
destWaveInfo.Data.CopyTo(tatolData, 0);
sourceWaveInfo.Data.CopyTo(tatolData, destWaveInfo.Data.Length);
destWaveInfo.Data = tatolData;
//3.创建追加后的文件
return(true);
}
public WaveInfo Clone()
{
WaveInfo waveInfo = new WaveInfo();
waveInfo.FileName = this.FileName;
waveInfo.PlayTime = this.PlayTime;
waveInfo.Size = this.Size;
//riff块
this.RiffBlock.RiffID.CopyTo(waveInfo.RiffBlock.RiffID, 0);
waveInfo.RiffBlock.Size = this.RiffBlock.Size;
this.RiffBlock.WaveID.CopyTo(waveInfo.RiffBlock.WaveID, 0);
//format块
this.FormatBlock.ID.CopyTo(waveInfo.FormatBlock.ID, 0);
waveInfo.FormatBlock.Size = this.FormatBlock.Size;
waveInfo.FormatBlock.AvgBytesPerSec = this.FormatBlock.AvgBytesPerSec;
waveInfo.FormatBlock.BitsPerSample = this.FormatBlock.BitsPerSample;
waveInfo.FormatBlock.BlockAlign = this.FormatBlock.BlockAlign;
waveInfo.FormatBlock.ChannelCount = this.FormatBlock.ChannelCount;
waveInfo.FormatBlock.FormatType = this.FormatBlock.FormatType;
waveInfo.FormatBlock.SamlesPerSec = this.FormatBlock.SamlesPerSec;
this.FormatBlock.Temp.CopyTo(waveInfo.FormatBlock.Temp, 0);
//fact块
this.FackBlock.ID.CopyTo(waveInfo.FackBlock.ID, 0);
waveInfo.FackBlock.Size = this.FackBlock.Size;
this.FackBlock.Temp.CopyTo(waveInfo.FackBlock.Temp, 0);
//data块
this.DataBlock.ID.CopyTo(waveInfo.DataBlock.ID, 0);
waveInfo.DataBlock.Size = this.DataBlock.Size;
waveInfo.DataBlock.FileBeginIndex = this.DataBlock.FileBeginIndex;
waveInfo.DataBlock.FileOverIndex = this.DataBlock.FileOverIndex;
waveInfo.Data = new byte[this.Data.Length];
this.Data.CopyTo(waveInfo.Data, 0);
return(waveInfo);
}
/// <summary>
/// 打开文件
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public static WaveInfo Open(string fileName)
{
WaveInfo waveInfo = new WaveInfo();
using (FileStream fileStream = new FileStream(fileName, FileMode.Open))
{
#region 1.riff块
//获得文件头中riff
fileStream.Read(waveInfo.RiffBlock.RiffID, 0, 4);
if (waveInfo.RiffBlock.RiffID[0] != waveInfo.RiffBlock.RiffTag[0] ||
waveInfo.RiffBlock.RiffID[1] != waveInfo.RiffBlock.RiffTag[1] ||
waveInfo.RiffBlock.RiffID[2] != waveInfo.RiffBlock.RiffTag[2] ||
waveInfo.RiffBlock.RiffID[3] != waveInfo.RiffBlock.RiffTag[3])
{
return(null);
}
byte[] tempBytes = new byte[4];
//数据大小
fileStream.Read(tempBytes, 0, 4);
waveInfo.RiffBlock.Size = BitConverter.ToUInt32(tempBytes, 0);
//文件大小
waveInfo.Size = waveInfo.RiffBlock.Size + 8;
//wave标示
fileStream.Read(waveInfo.RiffBlock.WaveID, 0, 4);
if (waveInfo.RiffBlock.WaveID[0] != waveInfo.RiffBlock.WaveTag[0] ||
waveInfo.RiffBlock.WaveID[1] != waveInfo.RiffBlock.WaveTag[1] ||
waveInfo.RiffBlock.WaveID[2] != waveInfo.RiffBlock.WaveTag[2] ||
waveInfo.RiffBlock.WaveID[3] != waveInfo.RiffBlock.WaveTag[3])
{
return(null);
}
#endregion
#region 2.format块
//fmt标示
fileStream.Read(waveInfo.FormatBlock.ID, 0, 4);
if (waveInfo.FormatBlock.ID[0] != waveInfo.FormatBlock.FmtTag[0] ||
waveInfo.FormatBlock.ID[1] != waveInfo.FormatBlock.FmtTag[1] ||
waveInfo.FormatBlock.ID[2] != waveInfo.FormatBlock.FmtTag[2] ||
waveInfo.FormatBlock.ID[3] != waveInfo.FormatBlock.FmtTag[3])
{
return(null);
}
//format大小
fileStream.Read(tempBytes, 0, 4);
waveInfo.FormatBlock.Size = BitConverter.ToUInt32(tempBytes, 0);
//格式类别
fileStream.Read(tempBytes, 0, 2);
waveInfo.FormatBlock.FormatType = BitConverter.ToUInt16(tempBytes, 0);
//声道数目
fileStream.Read(tempBytes, 0, 2);
waveInfo.FormatBlock.ChannelCount = BitConverter.ToUInt16(tempBytes, 0);
//采样率
fileStream.Read(tempBytes, 0, 4);
waveInfo.FormatBlock.SamlesPerSec = BitConverter.ToUInt32(tempBytes, 0);
//波形音频数据传送速率
fileStream.Read(tempBytes, 0, 4);
waveInfo.FormatBlock.AvgBytesPerSec = BitConverter.ToUInt32(tempBytes, 0);
waveInfo.PlayTime = (double)waveInfo.RiffBlock.Size / (double)waveInfo.FormatBlock.AvgBytesPerSec;
//数据块的调整数
fileStream.Read(tempBytes, 0, 2);
waveInfo.FormatBlock.BlockAlign = BitConverter.ToUInt16(tempBytes, 0);
//每样本的数据位数
fileStream.Read(tempBytes, 0, 2);
waveInfo.FormatBlock.BitsPerSample = BitConverter.ToUInt16(tempBytes, 0);
if (waveInfo.FormatBlock.Size == 18)
{
//保留
fileStream.Read(waveInfo.FormatBlock.Temp, 0, 2);
}
#endregion
#region 3.Fact块
//fact标示
fileStream.Read(waveInfo.FackBlock.ID, 0, 4);
if (waveInfo.FackBlock.ID[0] == waveInfo.FackBlock.FactTag[0] &&
waveInfo.FackBlock.ID[1] == waveInfo.FackBlock.FactTag[1] &&
waveInfo.FackBlock.ID[2] == waveInfo.FackBlock.FactTag[2] &&
waveInfo.FackBlock.ID[3] == waveInfo.FackBlock.FactTag[3])
{
//大小
fileStream.Read(tempBytes, 0, 4);
waveInfo.FackBlock.Size = BitConverter.ToUInt32(tempBytes, 0);
}
#endregion
#region 4.data块
waveInfo.DataBlock.ID[0] = waveInfo.FackBlock.ID[0];
waveInfo.DataBlock.ID[1] = waveInfo.FackBlock.ID[1];
waveInfo.DataBlock.ID[2] = waveInfo.FackBlock.ID[2];
waveInfo.DataBlock.ID[3] = waveInfo.FackBlock.ID[3];
if (waveInfo.DataBlock.ID[0] == waveInfo.DataBlock.DataTag[0] &&
waveInfo.DataBlock.ID[1] == waveInfo.DataBlock.DataTag[1] &&
waveInfo.DataBlock.ID[2] == waveInfo.DataBlock.DataTag[2] &&
waveInfo.DataBlock.ID[3] == waveInfo.DataBlock.DataTag[3])
{
//大小
fileStream.Read(tempBytes, 0, 4);
waveInfo.DataBlock.Size = BitConverter.ToUInt32(tempBytes, 0);
waveInfo.DataBlock.FileBeginIndex = fileStream.Position;
waveInfo.DataBlock.FileOverIndex = fileStream.Position + waveInfo.DataBlock.Size;
}
//wave文件数据
long dataSize = waveInfo.Size - fileStream.Position;
waveInfo.Data = new byte[(int)dataSize];
fileStream.Read(waveInfo.Data, 0, (int)dataSize);
#endregion
return(waveInfo);
}
}
/// <summary>
/// 创建文件
/// </summary>
/// <param name="waveInfo"></param>
/// <returns></returns>
public static bool Create(WaveInfo waveInfo, ref string errorInfo)
{
using (FileStream fileStream = new FileStream(waveInfo.FileName, FileMode.Create))
{
#region 1.riff块
//获得文件头中riff
if (waveInfo.RiffBlock.RiffID[0] != waveInfo.RiffBlock.RiffTag[0] ||
waveInfo.RiffBlock.RiffID[1] != waveInfo.RiffBlock.RiffTag[1] ||
waveInfo.RiffBlock.RiffID[2] != waveInfo.RiffBlock.RiffTag[2] ||
waveInfo.RiffBlock.RiffID[3] != waveInfo.RiffBlock.RiffTag[3])
{
errorInfo = "文件头Riff块格式不正确";
return(false);
}
fileStream.Write(waveInfo.RiffBlock.RiffID, 0, 4);
//数据大小
byte[] tempBytes;
tempBytes = BitConverter.GetBytes(waveInfo.RiffBlock.Size);
fileStream.Write(tempBytes, 0, 4);
//wave标示
if (waveInfo.RiffBlock.WaveID[0] != waveInfo.RiffBlock.WaveTag[0] ||
waveInfo.RiffBlock.WaveID[1] != waveInfo.RiffBlock.WaveTag[1] ||
waveInfo.RiffBlock.WaveID[2] != waveInfo.RiffBlock.WaveTag[2] ||
waveInfo.RiffBlock.WaveID[3] != waveInfo.RiffBlock.WaveTag[3])
{
errorInfo = "文件头Riff块格式不正确";
return(false);
}
fileStream.Write(waveInfo.RiffBlock.WaveID, 0, 4);
#endregion
#region 2.format块
//fmt标示
if (waveInfo.FormatBlock.ID[0] != waveInfo.FormatBlock.FmtTag[0] ||
waveInfo.FormatBlock.ID[1] != waveInfo.FormatBlock.FmtTag[1] ||
waveInfo.FormatBlock.ID[2] != waveInfo.FormatBlock.FmtTag[2])
{
errorInfo = "文件头format块格式不正确";
return(false);
}
fileStream.Write(waveInfo.FormatBlock.ID, 0, 4);
//format大小
tempBytes = BitConverter.GetBytes(waveInfo.FormatBlock.Size);
fileStream.Write(tempBytes, 0, 4);
//格式类别
tempBytes = BitConverter.GetBytes(waveInfo.FormatBlock.FormatType);
fileStream.Write(tempBytes, 0, 2);
//声道数目
tempBytes = BitConverter.GetBytes(waveInfo.FormatBlock.ChannelCount);
fileStream.Write(tempBytes, 0, 2);
//采样率
tempBytes = BitConverter.GetBytes(waveInfo.FormatBlock.SamlesPerSec);
fileStream.Write(tempBytes, 0, 4);
//波形音频数据传送速率
tempBytes = BitConverter.GetBytes(waveInfo.FormatBlock.AvgBytesPerSec);
fileStream.Write(tempBytes, 0, 4);
//数据块的调整数
tempBytes = BitConverter.GetBytes(waveInfo.FormatBlock.BlockAlign);
fileStream.Write(tempBytes, 0, 2);
//每样本的数据位数
tempBytes = BitConverter.GetBytes(waveInfo.FormatBlock.BitsPerSample);
fileStream.Write(tempBytes, 0, 2);
if (waveInfo.FormatBlock.Size == 18)
{
//保留
fileStream.Write(waveInfo.FormatBlock.Temp, 0, 2);
}
#endregion
#region 3.Fact块
//fact标示
if (waveInfo.FackBlock.ID[0] == waveInfo.FackBlock.FactTag[0] &&
waveInfo.FackBlock.ID[1] == waveInfo.FackBlock.FactTag[1] &&
waveInfo.FackBlock.ID[2] == waveInfo.FackBlock.FactTag[2] &&
waveInfo.FackBlock.ID[3] == waveInfo.FackBlock.FactTag[3])
{
fileStream.Write(waveInfo.FackBlock.ID, 0, 4);
//大小
tempBytes = BitConverter.GetBytes(waveInfo.FackBlock.Size);
fileStream.Write(tempBytes, 0, 4);
}
#endregion
#region 4.data块
if (waveInfo.DataBlock.ID[0] == waveInfo.DataBlock.DataTag[0] &&
waveInfo.DataBlock.ID[1] == waveInfo.DataBlock.DataTag[1] &&
waveInfo.DataBlock.ID[2] == waveInfo.DataBlock.DataTag[2] &&
waveInfo.DataBlock.ID[3] == waveInfo.DataBlock.DataTag[3])
{
fileStream.Write(waveInfo.DataBlock.ID, 0, 4);
//大小
tempBytes = BitConverter.GetBytes(waveInfo.DataBlock.Size);
fileStream.Write(tempBytes, 0, 4);
}
//wave文件数据
fileStream.Write(waveInfo.Data, 0, waveInfo.Data.Length);
#endregion
}
return(true);
}
