/// <summary>
/// Преобразует поток с wav файлом в mp3
/// </summary>
/// <param name="wavFile"></param>
public static void WavToMP3(string wavPath, string Mp3path)
{
using (Stream source = new FileStream(wavPath, FileMode.Open))
using (Stream Mp3file = new FileStream(Mp3path, FileMode.Create))
using (NAudio.Wave.WaveFileReader rdr = new NAudio.Wave.WaveFileReader(source))
{
WaveLib.WaveFormat fmt = new WaveLib.WaveFormat(rdr.WaveFormat.SampleRate, rdr.WaveFormat.BitsPerSample, rdr.WaveFormat.Channels);
// convert to MP3 at 96kbit/sec...
Yeti.Lame.BE_CONFIG conf = new Yeti.Lame.BE_CONFIG(fmt, 96);
// Allocate a 1-second buffer
int blen = rdr.WaveFormat.AverageBytesPerSecond;
byte[] buffer = new byte[blen];
Yeti.MMedia.Mp3.Mp3Writer mp3 = new Yeti.MMedia.Mp3.Mp3Writer(Mp3file, fmt, conf);
int readCount;
while ((readCount = rdr.Read(buffer, 0, blen)) > 0)
{
mp3.Write(buffer, 0, readCount);
}
Mp3file.Flush();
mp3.Close();
}
}
public static byte[] WavToMP3(byte[] wavFile)
{
using (MemoryStream source = new MemoryStream(wavFile))
using (WaveFileReader rdr = new WaveFileReader(source))
{
WaveLib.WaveFormat fmt = new WaveLib.WaveFormat(rdr.WaveFormat.SampleRate, rdr.WaveFormat.BitsPerSample, rdr.WaveFormat.Channels);
// convert to MP3 at 96kbit/sec...
Yeti.Lame.BE_CONFIG conf = new Yeti.Lame.BE_CONFIG(fmt, 96);
// Allocate a 1-second buffer
int blen = rdr.WaveFormat.AverageBytesPerSecond;
byte[] buffer = new byte[blen];
// Do conversion
using (MemoryStream output = new MemoryStream())
{
Yeti.MMedia.Mp3.Mp3Writer mp3 = new Yeti.MMedia.Mp3.Mp3Writer(output, fmt, conf);
int readCount;
while ((readCount = rdr.Read(buffer, 0, blen)) > 0)
{
mp3.Write(buffer, 0, readCount);
}
mp3.Close();
return(output.ToArray());
}
}
}
protected override void OnStreamingStoppedSuspended(SoundStreamingStatus streamingStatus)
{
base.OnStreamingStoppedSuspended(streamingStatus);
if (mp3Writer != null)
{
mp3Writer.Close();
mp3Writer = null;
}
}
protected override void OnStreamingStartedResumed()
{
base.OnStreamingStartedResumed();
WaveLib.WaveFormat waveFormat = YetiWaveFormat;
Mp3SoundFormat outputFormat = (Mp3SoundFormat)OutputFormat;
mp3Writer = new Yeti.MMedia.Mp3.Mp3Writer(Output,
waveFormat, new Yeti.Lame.BE_CONFIG(waveFormat, outputFormat.BitRate,
Yeti.Lame.LAME_QUALITY_PRESET.LQP_NORMAL_QUALITY), false);
}
private static void wavToMp3(Stream streamToWav, Stream outputStream, uint desiredOutputBitRate)
{
var mp3Config = new Yeti.MMedia.Mp3.Mp3WriterConfig((streamToWav as WaveLib.WaveStream).Format, desiredOutputBitRate);
var mp3Writer = new Yeti.MMedia.Mp3.Mp3Writer(outputStream, mp3Config);
byte[] buff = new byte[mp3Writer.OptimalBufferSize];
int read = 0;
long total = streamToWav.Length;
streamToWav.Position = 0;
while ((read = streamToWav.Read(buff, 0, buff.Length)) > 0)
{
mp3Writer.Write(buff, 0, read);
}
mp3Writer.Close();
streamToWav.Close();
}
private static void wavToMp3(Stream streamToWav, Stream outputStream, uint desiredOutputBitRate)
{
var mp3Config = new Yeti.MMedia.Mp3.Mp3WriterConfig((streamToWav as WaveLib.WaveStream).Format, desiredOutputBitRate);
var mp3Writer = new Yeti.MMedia.Mp3.Mp3Writer(outputStream, mp3Config);
byte[] buff = new byte[mp3Writer.OptimalBufferSize];
int read = 0;
long total = streamToWav.Length;
streamToWav.Position = 0;
while ((read = streamToWav.Read(buff, 0, buff.Length)) > 0)
mp3Writer.Write(buff, 0, read);
mp3Writer.Close();
streamToWav.Close();
}
private static byte[] transcode(byte[] buffer)
{
MemoryStream outputStream = new MemoryStream();
try
{
var writer = new Yeti.MMedia.Mp3.Mp3Writer(outputStream, inputFormat, mp3Format);
writer.Write(buffer);
writer.Flush();
}
catch (Exception e)
{
Logger.Log("Exception in MP3 encoding of Microphone input: " + e.Message);
}
return outputStream.ToArray();
}
