/// <summary>
/// 构造一个网络音频流
/// </summary>
/// <param name="url"></param>
public NetWorkWaveReader(string url)
{
//需要将网络流全部读入内存中，因为网络流是不能直接查找的
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
WebResponse response = request.GetResponse();
using (Stream stream = response.GetResponseStream())
{
waveStream = new MemoryStream();
byte[] byteBuffer = new byte[1024];
if (stream != null)
{
int iReadSize = stream.Read(byteBuffer, 0, byteBuffer.Length);
while (iReadSize > 0)
{
waveStream.Write(byteBuffer, 0, iReadSize);
iReadSize = stream.Read(byteBuffer, 0, byteBuffer.Length);
}
stream.Close();
stream.Dispose();
}
waveStream.Flush();
waveStream.Position = 0;
var chunkReader = new WaveFileChunkReader();
chunkReader.ReadWaveHeader(waveStream);
waveFormat = chunkReader.WaveFormat;
dataPosition = chunkReader.DataChunkPosition;
dataChunkLength = chunkReader.DataChunkLength;
chunks = chunkReader.RiffChunks;
Position = 0;
ownInput = true;
}
response.Close();
}
/// <summary>
/// Creates a Network Wave Reader based on an input stream
/// </summary>
/// <param name="inputStream">The input stream containing a WAV data including header</param>
public NetWorkWaveReader(Stream inputStream)
{
waveStream = inputStream;
var chunkReader = new WaveFileChunkReader();
chunkReader.ReadWaveHeader(inputStream);
waveFormat = chunkReader.WaveFormat;
dataPosition = chunkReader.DataChunkPosition;
dataChunkLength = chunkReader.DataChunkLength;
chunks = chunkReader.RiffChunks;
Position = 0;
}