C # wav Voice file merge

Development to complete the voice broadcast products, as customers use a wide variety of playback products, when using the HDMI interface to play audio, due to the use of different sound card, the individual machine will appear too small, or not broadcast the situation. Therefore, the use of the voice file merge playback method to solve this problem.

<summary>
Merging voice streams
</summary>
<param name= "pplaystreamslist" > Voice Flow Collection </param>
public void Mergeandplaywavfile (observablecollection<stream> pplaystreamslist)
{
Try
{
if (Pplaystreamslist.count > 0)
{
int datafilebeginindex = 0;
int formatsize;
list<byte[]> binfolist = new list<byte[]> ();
list<int> filesizelist = new list<int> ();
list<int> datasizelist = new list<int> ();
foreach (Stream fs in pplaystreamslist)
{
Fs. Position = 0;
byte[] Binfo = new byte[46];
Fs. Read (binfo, 0, 46);
Formatsize = Bitconverter.toint32 (Binfo, 16);
Wave = riff_wave_chunk + format_chunk + data_chunk (RIFF)/fact_chunk (Fact)
Riff_wave_chunk (file header, 12 bytes) +
Format_chunk (sound content definition, based on the 16th to 20th byte to get the remaining chunk size, 16 or 18 bytes) +
Data_chunk (data area)
Datafilebeginindex = formatsize + 20 + 4;
Binfolist.add (Binfo);
Filesizelist.add (System.BitConverter.ToInt32 (Binfo, 4));
Datasizelist.add (System.BitConverter.ToInt32 (Binfo, Datafilebeginindex));
}

Calculate all WAV file sizes
int fileSize = 0;
foreach (int fsize in filesizelist)
{
FileSize + = fsize;
}
byte[] totalfilesize = System.BitConverter.GetBytes (fileSize);

Calculate all WAV Data sizes
int datasize = 0;
foreach (int dsize in datasizelist)
{
DataSize + = Dsize;
}
byte[] totaldatasize = System.BitConverter.GetBytes (datasize);
using (Stream tofile = new MemoryStream ())
{
Stream tofile = new MemoryStream ();
BinaryWriter bwriter = new BinaryWriter (tofile);

Get more information about the last WAV file
int lastwavefile = pplaystreamslist.count-1;

for (int i = 4, j = 0; i < 8; i++, J + +)
{
Binfolist[lastwavefile][i] = Totalfilesize[j];
}

for (int i = datafilebeginindex, j = 0; I < Datafilebeginindex + 4; i++, J + +)
{
Binfolist[lastwavefile][i] = Totaldatasize[j];
}
Bwriter.write (Binfolist[lastwavefile]);
int k = 0;
foreach (Stream fs in pplaystreamslist)
{
int readlength;
Fs. Position = Datafilebeginindex + 4;
if (K < Datasizelist.count)
{
Readlength = datasizelist[k]-40;
byte[] Dushu = new Byte[readlength];
Fs. Read (Dushu, 0, readlength);
Bwriter.write (Dushu, 0, readlength);
k++;
}
}
SoundPlayer player = new SoundPlayer ();
if (tofile! = null)
{
Player. Stream = null;
Player. Stream = ToFile;
tofile.position = 0;
Player. LoadAsync ();
for (int i = 0; i < playtimes; i++)
{player. Playsync (); }

}

Bwriter.flush ();
Bwriter.close ();

Tofile.flush ();
Tofile.close ();
Player. Dispose ();
Bwriter.dispose ();
Tofile.dispose ();
}
}
}
catch (Exception e)
{
Loginfo.savelog ("Combined voice stream error, Method Mergeandplaywavfile ():" + e.message);
}

}

C # wav Voice file merge