public void Close()
{
if (rdr != null)
{
rdr.Close();
}
if (_decoderProcess != null && !_decoderProcess.HasExited)
{
try { _decoderProcess.Kill(); _decoderProcess.WaitForExit(); }
catch { }
}
}
public static AudioBuffer ReadAllSamples(string path, Stream IO)
{
WAVReader reader = new WAVReader(path, IO);
AudioBuffer buff = new AudioBuffer(reader, (int)reader.Length);
reader.Read(buff, -1);
if (reader.Remaining != 0)
{
throw new Exception("couldn't read the whole file");
}
reader.Close();
return(buff);
}
private static Tuple<int, string> WavToFlacHelper(WAVReader audioSource, string targetFlacPath)
{
int sampleRate;
AudioBuffer buffer = new AudioBuffer(audioSource, 0x10000);
FlakeWriterSettings settings = new FlakeWriterSettings();
settings.PCM = audioSource.PCM;
FlakeWriter audioDestination = new FlakeWriter(targetFlacPath, settings);
while (audioSource.Read(buffer, -1) != 0)
{
audioDestination.Write(buffer);
}
sampleRate = settings.PCM.SampleRate;
audioDestination.Close();
audioSource.Close();
return new Tuple<int, string>(sampleRate, targetFlacPath);
}
public static int Wav2Flac(String wavName, string flacName)
{
int sampleRate = 0;
IAudioSource audioSource = new WAVReader(wavName, null);
AudioBuffer buff = new AudioBuffer(audioSource, 0x10000);
FlakeWriter flakewriter = new FlakeWriter(flacName, audioSource.PCM);
sampleRate = audioSource.PCM.SampleRate;
FlakeWriter audioDest = flakewriter;
while (audioSource.Read(buff, -1) != 0)
{
audioDest.Write(buff);
}
audioDest.Close();
audioDest.Close();
audioSource.Close();
return sampleRate;
}
private void ConvertToFlac(Stream sourceStream, Stream destinationStream) {
var audioSource = new WAVReader(null, sourceStream);
try {
if (audioSource.PCM.SampleRate != 16000) {
throw new InvalidOperationException("Incorrect frequency - WAV file must be at 16 KHz.");
}
var buff = new AudioBuffer(audioSource, 0x10000);
var flakeWriter = new FlakeWriter(null, destinationStream, audioSource.PCM);
// flakeWriter.CompressionLevel = 8;
while (audioSource.Read(buff, -1) != 0) {
flakeWriter.Write(buff);
}
flakeWriter.Close();
}
finally {
audioSource.Close();
}
}
/// <summary>
/// Convert stream of wav to flac format and send it to google speech recognition service.
/// </summary>
/// <param name="stream">wav stream</param>
/// <returns>recognized result</returns>
/// // Step 1- Converts wav stream to flac
public static string WavStreamToGoogle(Stream stream)
{
FlakeWriter audioDest = null;
IAudioSource audioSource = null;
string answer;
try
{
var outStream = new MemoryStream();
stream.Position = 0;
audioSource = new WAVReader("", stream);
var buff = new AudioBuffer(audioSource, 0x10000);
audioDest = new FlakeWriter("", outStream, audioSource.PCM);
var sampleRate = audioSource.PCM.SampleRate;
while (audioSource.Read(buff, -1) != 0)
{
audioDest.Write(buff);
}
answer = GoogleRequest(outStream, sampleRate);
}
finally
{
if (audioDest != null) audioDest.Close();
if (audioSource != null) audioSource.Close();
}
return answer;
}
/// <summary>
/// Convert .wav file to .flac file with the same name
/// </summary>
/// <param name="WavName">path to .wav file</param>
/// <returns>Sample Rate of converted .flac</returns>
public static int Wav2Flac(string WavName)
{
int sampleRate;
var flacName = Path.ChangeExtension(WavName, "flac");
FlakeWriter audioDest = null;
IAudioSource audioSource = null;
try
{
audioSource = new WAVReader(WavName, null);
AudioBuffer buff = new AudioBuffer(audioSource, 0x10000);
audioDest = new FlakeWriter(flacName, audioSource.PCM);
sampleRate = audioSource.PCM.SampleRate;
while (audioSource.Read(buff, -1) != 0)
{
audioDest.Write(buff);
}
}
finally
{
if (audioDest != null) audioDest.Close();
if (audioSource != null) audioSource.Close();
}
return sampleRate;
}
public static AudioBuffer ReadAllSamples(string path, Stream IO)
{
WAVReader reader = new WAVReader(path, IO);
AudioBuffer buff = new AudioBuffer(reader, (int)reader.Length);
reader.Read(buff, -1);
if (reader.Remaining != 0)
throw new Exception("couldn't read the whole file");
reader.Close();
return buff;
}
/// <summary>Конвертирование wav-файла во flac</summary>
/// <returns>Частота дискретизации</returns>
private static void _Wav2Flac(String wavName, string flacName)
{
Debug.Assert(wavName != null);
Debug.Assert(!string.IsNullOrEmpty(flacName));
IAudioSource audioSource = new WAVReader(wavName, null);
AudioBuffer buff = new AudioBuffer(audioSource, 0x10000);
FlakeWriter flakewriter = new FlakeWriter(flacName, audioSource.PCM);
FlakeWriter audioDest = flakewriter;
while (audioSource.Read(buff, -1) != 0)
{
audioDest.Write(buff);
}
audioDest.Close();
audioSource.Close();
}
static void Main(string[] args)
{
Console.SetOut(Console.Error);
Console.WriteLine("LossyWAV {0}, Copyright (C) 2007,2008 Nick Currie, Copyleft.", LossyWAVWriter.version_string);
Console.WriteLine("C# port Copyright (C) 2008 Grigory Chudov.");
Console.WriteLine("This is free software under the GNU GPLv3+ license; There is NO WARRANTY, to");
Console.WriteLine("the extent permitted by law. <http://www.gnu.org/licenses/> for details.");
if (args.Length < 1 || (args[0].StartsWith("-") && args[0] != "-"))
{
Usage();
return;
}
string sourceFile = args[0];
string stdinName = null;
double quality = 5.0;
bool createCorrection = false;
bool toStdout = false;
int outputBPS = 0;
for (int arg = 1; arg < args.Length; arg++)
{
bool ok = true;
if (args[arg] == "-I" || args[arg] == "--insane")
quality = 10;
else if (args[arg] == "-E" || args[arg] == "--extreme")
quality = 7.5;
else if (args[arg] == "-S" || args[arg] == "--standard")
quality = 5.0;
else if (args[arg] == "-P" || args[arg] == "--portable")
quality = 2.5;
else if (args[arg] == "-C" || args[arg] == "--correction")
createCorrection = true;
else if (args[arg] == "--16")
outputBPS = 16;
else if ((args[arg] == "-N" || args[arg] == "--stdinname") && ++arg < args.Length)
stdinName = args[arg];
else if ((args[arg] == "-q" || args[arg] == "--quality") && ++arg < args.Length)
ok = double.TryParse(args[arg], out quality);
else if (args[arg] == "--stdout")
toStdout = true;
else
ok = false;
if (!ok)
{
Usage();
return;
}
}
DateTime start = DateTime.Now;
TimeSpan lastPrint = TimeSpan.FromMilliseconds(0);
#if !DEBUG
try
#endif
{
WAVReader audioSource = new WAVReader(sourceFile, (sourceFile == "-" ? Console.OpenStandardInput() : null));
if (sourceFile == "-" && stdinName != null) sourceFile = stdinName;
AudioPCMConfig pcm = outputBPS == 0 ? audioSource.PCM : new AudioPCMConfig(outputBPS, audioSource.PCM.ChannelCount, audioSource.PCM.SampleRate);
WAVWriter audioDest = new WAVWriter(Path.ChangeExtension(sourceFile, ".lossy.wav"), toStdout ? Console.OpenStandardOutput() : null, pcm);
WAVWriter lwcdfDest = createCorrection ? new WAVWriter(Path.ChangeExtension(sourceFile, ".lwcdf.wav"), null, audioSource.PCM) : null;
LossyWAVWriter lossyWAV = new LossyWAVWriter(audioDest, lwcdfDest, quality, audioSource.PCM);
AudioBuffer buff = new AudioBuffer(audioSource, 0x10000);
Console.WriteLine("Filename : {0}", sourceFile);
Console.WriteLine("File Info : {0}kHz; {1} channel; {2} bit; {3}", audioSource.PCM.SampleRate, audioSource.PCM.ChannelCount, audioSource.PCM.BitsPerSample, TimeSpan.FromSeconds(audioSource.Length * 1.0 / audioSource.PCM.SampleRate));
lossyWAV.FinalSampleCount = audioSource.Length;
while (audioSource.Read(buff, -1) != 0)
{
lossyWAV.Write(buff);
TimeSpan elapsed = DateTime.Now - start;
if ((elapsed - lastPrint).TotalMilliseconds > 60)
{
Console.Error.Write("\rProgress : {0:00}%; {1:0.0000} bits; {2:0.00}x; {3}/{4}",
100.0 * audioSource.Position / audioSource.Length,
1.0 * lossyWAV.OverallBitsRemoved / audioSource.PCM.ChannelCount / lossyWAV.BlocksProcessed,
lossyWAV.SamplesProcessed / elapsed.TotalSeconds / audioSource.PCM.SampleRate,
elapsed,
TimeSpan.FromMilliseconds(elapsed.TotalMilliseconds / lossyWAV.SamplesProcessed * audioSource.Length)
);
lastPrint = elapsed;
}
}
TimeSpan totalElapsed = DateTime.Now - start;
Console.Error.Write("\r \r");
Console.WriteLine("Results : {0:0.0000} bits; {1:0.00}x; {2}",
(1.0 * lossyWAV.OverallBitsRemoved) / audioSource.PCM.ChannelCount / lossyWAV.BlocksProcessed,
lossyWAV.SamplesProcessed / totalElapsed.TotalSeconds / audioSource.PCM.SampleRate,
totalElapsed
);
audioSource.Close();
lossyWAV.Close();
}
#if !DEBUG
catch (Exception ex)
{
Console.WriteLine();
Console.WriteLine("Error: {0}", ex.Message);
//Console.WriteLine("{0}", ex.StackTrace);
}
#endif
}
private byte[] Wav2Flac(MemoryStream waveStreamMemory)
{
if (waveStreamMemory.Length >= 3200) // 0
{
Log.Write("Ева услышала Вас.", Log.Category.Information);
byte[] Array = null;
WaveFileWriter writer = new WaveFileWriter("C:\\rec_temp.wav", waveInEvent.WaveFormat);
writer.Write(waveStreamMemory.ToArray(), 0, waveStreamMemory.ToArray().Length);
writer.Close();
IAudioSource audioSource = new WAVReader("C:\\rec_temp.wav", null);
AudioPCMConfig audioPCMConfig = new AudioPCMConfig(16, 1, 16000);
AudioBuffer buff = new AudioBuffer(audioSource, 0x10000);
//AudioBuffer buffMemory = new AudioBuffer(audioPCMConfig, waveStreamMemory.ToArray(), Convert.ToInt32(waveStreamMemory.Length) / audioPCMConfig.BlockAlign);
FlakeWriter flakewriter = new FlakeWriter(null, audioSource.PCM);
FlakeWriter audioDest = flakewriter;
while (audioSource.Read(buff, -1) != 0)
{
audioDest.Write(buff);
}
if (flakewriter.BufferMemory != null)
{
Array = flakewriter.BufferMemory.ToArray();
}
audioDest.Close();
audioSource.Close();
return Array;
}
return null;
}