/// <summary>
/// 合成Wave格式音频文件
/// </summary>
/// <param name="outputFile">要合成的文件名称</param>
/// <param name="sourceFiles">源文件名称集合</param>
public static void Merge(string outputFile, IEnumerable <string> sourceFiles)
{
var waIn = new WaveFileMerge();
var waOut = new WaveFileMerge
{
_dataLength = 0,
_length = 0
};
//聚合文件头
var enumerable = sourceFiles as string[] ?? sourceFiles.ToArray();
foreach (var path in enumerable)
{
if (!File.Exists(path))
{
continue;
}
waIn.WaveHeaderSourceFile(path);
waOut._dataLength += waIn._dataLength;
waOut._length += waIn._length;
}
//重构文件头
waOut._bitsPerSample = waIn._bitsPerSample;
waOut._channels = waIn._channels;
waOut._samplerate = waIn._samplerate;
waOut.WaveHeaderOutputFile(outputFile);
foreach (var path in enumerable)
{
if (!File.Exists(path))
{
continue;
}
using (var fs = new FileStream(path, FileMode.Open, FileAccess.Read))
{
var arrfile = new byte[fs.Length - 44];
fs.Position = 44;
fs.Read(arrfile, 0, arrfile.Length);
using (var fo = new FileStream(outputFile, FileMode.Append, FileAccess.Write))
{
using (var bw = new BinaryWriter(fo))
{
bw.Write(arrfile);
}
}
}
}
}
/// <summary>
/// 拼接 Wave 格式音频文件
/// </summary>
/// <param name="outputFile">要合成的文件名称</param>
/// <param name="sourceFiles">源文件名称集合</param>
public static void MergeWave(string outputFile, IEnumerable <string> sourceFiles)
{
WaveFileMerge.Merge(outputFile, sourceFiles);
}
