public void Convert(string inputFile, string outputFile)
{
using (var outputStream = File.Create(outputFile))
{
var channels = AudioSampleReader.ReadChannels(inputFile, out var waveFormat);
var oggStream = new OggStream(StaticRandom.Rng.Next());
// Build header
var headerBuilder = new HeaderPacketBuilder();
var audioInfo = VorbisInfo.InitVariableBitRate(channels.Count, waveFormat.SampleRate, 0.1f);
var infoPacket = headerBuilder.BuildInfoPacket(audioInfo);
var commentsPacket = headerBuilder.BuildCommentsPacket(new Comments());
var booksPacket = headerBuilder.BuildBooksPacket(audioInfo);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
WriteHeader(oggStream, outputStream);
// Store audio
var processingState = ProcessingState.Create(audioInfo);
var normalizedChannels = Normalize(channels);
processingState.WriteData(normalizedChannels, normalizedChannels[0].Length);
processingState.WriteEndOfStream();
WriteAudio(oggStream, outputStream, processingState);
}
}
private static void InitOggStream(int sampleRate, int channels, out OggStream oggStream, out ProcessingState processingState)
{
// Stores all the static vorbis bitstream settings
var info = VorbisInfo.InitVariableBitRate(channels, sampleRate, 0.5f);
// set up our packet->stream encoder
var serial = new Random().Next();
oggStream = new OggStream(serial);
// =========================================================
// HEADER
// =========================================================
// Vorbis streams begin with three headers; the initial header (with
// most of the codec setup parameters) which is mandated by the Ogg
// bitstream spec. The second header holds any comment fields. The
// third header holds the bitstream codebook.
var comments = new Comments();
comments.AddTag("ARTIST", "TTS");
var infoPacket = HeaderPacketBuilder.BuildInfoPacket(info);
var commentsPacket = HeaderPacketBuilder.BuildCommentsPacket(comments);
var booksPacket = HeaderPacketBuilder.BuildBooksPacket(info);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
// =========================================================
// BODY (Audio Data)
// =========================================================
processingState = ProcessingState.Create(info);
}
/// <summary>
/// VorbisFileWriter that actually writes to a stream
/// </summary>
/// <param name="outStream">Stream to be written to</param>
/// <param name="sampleRate">The sample rate to use</param>
/// <param name="channels">The number of channels to use</param>
/// <param name="quality">The base quality for Vorbis encoding</param>
public VorbisFileWriter(Stream outStream, int sampleRate, int channels, float quality = 0.5f)
{
this.outStream = outStream;
SampleRate = sampleRate;
Channels = channels;
if (!startBuffers.ContainsKey(sampleRate))
{
throw new InvalidOperationException($"Vorbis writer does not support {sampleRate} sample rate.");
}
// Stores all the static vorbis bitstream settings
Console.WriteLine($"Initiating variable bit rate: {channels} channels, {sampleRate} sample rate, {quality} quality");
var info = VorbisInfo.InitVariableBitRate(channels, sampleRate, quality);
// set up our packet->stream encoder
var serial = MainWindow.MainRandom.Next();
oggStream = new OggStream(serial);
// =========================================================
// HEADER
// =========================================================
// Vorbis streams begin with three headers; the initial header (with
// most of the codec setup parameters) which is mandated by the Ogg
// bitstream spec. The second header holds any comment fields. The
// third header holds the bitstream codebook.
var headerBuilder = new HeaderPacketBuilder();
var comments = new Comments();
var infoPacket = headerBuilder.BuildInfoPacket(info);
var commentsPacket = headerBuilder.BuildCommentsPacket(comments);
var booksPacket = headerBuilder.BuildBooksPacket(info);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
// Flush to force audio data onto its own page per the spec
FlushPages(oggStream, outStream, true);
// =========================================================
// BODY (Audio Data)
// =========================================================
processingState = ProcessingState.Create(info);
// Append some zeros at the start so the result has the same length as the input
int bufferSize = startBuffers[sampleRate];
float[][] outSamples = new float[channels][];
for (int ch = 0; ch < channels; ch++)
{
outSamples[ch] = new float[bufferSize];
}
processingState.WriteData(outSamples, bufferSize);
}
private static byte[] GenerateFile(float[][] floatSamples, int sampleRate, int channels)
{
using MemoryStream outputData = new MemoryStream();
// Stores all the static vorbis bitstream settings
var info = VorbisInfo.InitVariableBitRate(channels, sampleRate, 0.5f);
// set up our packet->stream encoder
var serial = new Random().Next();
var oggStream = new OggStream(serial);
// =========================================================
// HEADER
// =========================================================
// Vorbis streams begin with three headers; the initial header (with
// most of the codec setup parameters) which is mandated by the Ogg
// bitstream spec. The second header holds any comment fields. The
// third header holds the bitstream codebook.
var comments = new Comments();
comments.AddTag("ARTIST", "TEST");
var infoPacket = HeaderPacketBuilder.BuildInfoPacket(info);
var commentsPacket = HeaderPacketBuilder.BuildCommentsPacket(comments);
var booksPacket = HeaderPacketBuilder.BuildBooksPacket(info);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
// Flush to force audio data onto its own page per the spec
FlushPages(oggStream, outputData, true);
// =========================================================
// BODY (Audio Data)
// =========================================================
var processingState = ProcessingState.Create(info);
for (int readIndex = 0; readIndex <= floatSamples[0].Length; readIndex += WriteBufferSize)
{
if (readIndex == floatSamples[0].Length)
{
processingState.WriteEndOfStream();
}
else
{
processingState.WriteData(floatSamples, WriteBufferSize, readIndex);
}
while (!oggStream.Finished && processingState.PacketOut(out OggPacket packet))
{
oggStream.PacketIn(packet);
FlushPages(oggStream, outputData, false);
}
}
FlushPages(oggStream, outputData, true);
return(outputData.ToArray());
}
private static void Main()
{
var stdin = new FileStream(@"unencoded.raw", FileMode.Open, FileAccess.Read);
var stdout = new FileStream(@"encoded.ogg", FileMode.Create, FileAccess.Write);
// StripWavHeader(stdin);
// Stores all the static vorbis bitstream settings
var info = VorbisInfo.InitVariableBitRate(2, 44100, 0.1f);
// set up our packet->stream encoder
var serial = new Random().Next();
var oggStream = new OggStream(serial);
// =========================================================
// HEADER
// =========================================================
// Vorbis streams begin with three headers; the initial header (with
// most of the codec setup parameters) which is mandated by the Ogg
// bitstream spec. The second header holds any comment fields. The
// third header holds the bitstream codebook.
var headerBuilder = new HeaderPacketBuilder();
var comments = new Comments();
comments.AddTag("ARTIST", "TEST");
var infoPacket = headerBuilder.BuildInfoPacket(info);
var commentsPacket = headerBuilder.BuildCommentsPacket(comments);
var booksPacket = headerBuilder.BuildBooksPacket(info);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
// Flush to force audio data onto its own page per the spec
OggPage page;
while (oggStream.PageOut(out page, true))
{
stdout.Write(page.Header, 0, page.Header.Length);
stdout.Write(page.Body, 0, page.Body.Length);
}
// =========================================================
// BODY (Audio Data)
// =========================================================
var processingState = ProcessingState.Create(info);
var buffer = new float[info.Channels][];
buffer[0] = new float[SampleSize];
buffer[1] = new float[SampleSize];
var readbuffer = new byte[SampleSize * 4];
while (!oggStream.Finished)
{
var bytes = stdin.Read(readbuffer, 0, readbuffer.Length);
if (bytes == 0)
{
processingState.WriteEndOfStream();
}
else
{
var samples = bytes / 4;
for (var i = 0; i < samples; i++)
{
// uninterleave samples
buffer[0][i] = (short)((readbuffer[i * 4 + 1] << 8) | (0x00ff & readbuffer[i * 4])) / 32768f;
buffer[1][i] = (short)((readbuffer[i * 4 + 3] << 8) | (0x00ff & readbuffer[i * 4 + 2])) / 32768f;
}
processingState.WriteData(buffer, samples);
}
OggPacket packet;
while (!oggStream.Finished &&
processingState.PacketOut(out packet))
{
oggStream.PacketIn(packet);
while (!oggStream.Finished &&
oggStream.PageOut(out page, false))
{
stdout.Write(page.Header, 0, page.Header.Length);
stdout.Write(page.Body, 0, page.Body.Length);
}
}
}
stdin.Close();
stdout.Close();
}
// OGG-Conversion
private void OGGConversion()
{
progBarVisible = true;
try
{
FileStream stdin;
FileStream stdout;
if (!ConvUsespreset)
{
stdin = new FileStream(ConvTitle + ".wav", FileMode.Open, FileAccess.Read);
stdout = new FileStream(ConvTitle + ".ogg", FileMode.Create, FileAccess.Write);
}
else
{
stdin = new FileStream(Filepath + "\\" + ConvTitle + ".wav", FileMode.Open, FileAccess.Read);
stdout = new FileStream(Filepath + "\\" + ConvTitle + ".ogg", FileMode.Create, FileAccess.Write);
}
var info = VorbisInfo.InitVariableBitRate(2, 48000, 0.1f);
var serial = new Random().Next();
var oggStream = new OggStream(serial);
var headerBuilder = new HeaderPacketBuilder();
var comments = new Comments();
comments.AddTag("ARTIST", "");
var infoPacket = headerBuilder.BuildInfoPacket(info);
var commentsPacket = headerBuilder.BuildCommentsPacket(comments);
var booksPacket = headerBuilder.BuildBooksPacket(info);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
OggPage page;
while (oggStream.PageOut(out page, true))
{
stdout.Write(page.Header, 0, page.Header.Length);
stdout.Write(page.Body, 0, page.Body.Length);
}
var processingState = ProcessingState.Create(info);
var buffer = new float[info.Channels][];
buffer[0] = new float[SampleSize];
buffer[1] = new float[SampleSize];
var readbuffer = new byte[SampleSize * 4];
while (!oggStream.Finished)
{
var bytes = stdin.Read(readbuffer, 0, readbuffer.Length);
if (bytes == 0)
{
processingState.WriteEndOfStream();
}
else
{
var samples = bytes / 4;
progBarMax = samples;
progBarWEE = false;
for (var i = 0; i < samples; i++)
{
// uninterleave samples
buffer[0][i] = (short)((readbuffer[i * 4 + 1] << 8) | (0x00ff & readbuffer[i * 4])) / 32768f;
buffer[1][i] = (short)((readbuffer[i * 4 + 3] << 8) | (0x00ff & readbuffer[i * 4 + 2])) / 32768f;
progBarValue = i;
}
progBarWEE = true;
processingState.WriteData(buffer, samples);
}
OggPacket packet;
while (!oggStream.Finished &&
processingState.PacketOut(out packet))
{
oggStream.PacketIn(packet);
while (!oggStream.Finished &&
oggStream.PageOut(out page, false))
{
stdout.Write(page.Header, 0, page.Header.Length);
stdout.Write(page.Body, 0, page.Body.Length);
}
}
}
stdin.Close();
stdout.Close();
if (!ConvUsespreset)
{
File.Delete(ConvTitle + ".wav");
}
else
{
File.Delete(Filepath + "\\" + ConvTitle + ".wav");
}
}
catch (Exception error)
{
errortext = Convert.ToString(error);
}
progBarVisible = false;
Thread.CurrentThread.Abort();
}
public static void WriteFile(Unity_Studio.EndianStream stream, string file, int offset, int size, Ogg ogg)
{
// Write to disk
using (BinaryWriter writer = new BinaryWriter(File.Open(file, FileMode.Create)))
{
// Only support header CRC 3605052372 for now
OggVorbisHeader head = new OggVorbisHeader();
HeaderPacketBuilder hpb = new HeaderPacketBuilder();
CodecSetup cSetup = new CodecSetup(null);
cSetup.BlockSizes[0] = 256;
cSetup.BlockSizes[1] = 2048;
VorbisInfo info = new VorbisInfo(cSetup, (int)ogg.channels, (int)ogg.frequency, 0);
OggPacket headerInfo = hpb.BuildInfoPacket(info);
Comments comments = new Comments();
if (ogg.loopStart > 0 && ogg.loopEnd > 0)
{
comments.AddTag("LOOP_START", ogg.loopStart.ToString());
comments.AddTag("LOOP_END", ogg.loopEnd.ToString());
}
OggPacket headerComment = hpb.BuildCommentsPacket(comments);
OggPacket headerSetup = new OggPacket(OggVorbisHeader.GetHeader(ogg.crc32), false, 0, 2);
OggStream output = new OggStream(1);
output.PacketIn(headerInfo);
output.PacketIn(headerComment);
output.PacketIn(headerSetup);
stream.Position = offset;
UInt16 packetSize = stream.ReadUInt16();
int prevPacketNo = 2;
int prevGranulePos = 0;
while (packetSize > 0)
{
OggPacket packet = new OggPacket(stream.ReadBytes(packetSize), false, 0, prevPacketNo + 1);
byte firstByte = packet.PacketData[0];
// OK for stereo
int granuleSize = 128;
if ((firstByte & 2) != 0)
{
granuleSize = 1024;
}
if (ogg.channels == 1)
{
granuleSize /= 4;
}
packet.GranulePosition = prevGranulePos + granuleSize;
if (stream.Position + 2 < offset + size)
{
packetSize = stream.ReadUInt16();
}
else
{
packetSize = 0;
}
packet.EndOfStream = packetSize == 0;
prevGranulePos = packet.GranulePosition;
prevPacketNo = packet.PacketNumber;
output.PacketIn(packet);
OggPage page = null;
if (output.PageOut(out page, true))
{
writer.Write(page.Header);
writer.Write(page.Body);
}
}
//float vorbis_quality = ((ogg.quality - 1) + (ogg.quality - 100) * 0.1f) / 99.0f;
//VorbisInfo.InitVariableBitRate(ogg.channels, ogg.frequency, ogg.)
//writer.Write();
writer.Close();
}
}
public byte[] ConvertWaveBytes(byte[] waveBytes)
{
// Stores all the static vorbis bitstream settings
VorbisInfo info = VorbisInfo.InitVariableBitRate(2, 44100, 0.1f);
// set up our packet->stream encoder
int serial = new Random().Next();
OggStream oggStream = new OggStream(serial);
MemoryStream streamIn = new MemoryStream(waveBytes);
MemoryStream streamOut = new MemoryStream();
// Vorbis streams begin with three headers; the initial header (with
// most of the codec setup parameters) which is mandated by the Ogg
// bitstream spec. The second header holds any comment fields. The
// third header holds the bitstream codebook.
var headerBuilder = new HeaderPacketBuilder();
var comments = new Comments();
var infoPacket = headerBuilder.BuildInfoPacket(info);
var commentsPacket = headerBuilder.BuildCommentsPacket(comments);
var booksPacket = headerBuilder.BuildBooksPacket(info);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
// Flush to force audio data onto its own page per the spec
OggPage page;
while (oggStream.PageOut(out page, true))
{
streamOut.Write(page.Header, 0, page.Header.Length);
streamOut.Write(page.Body, 0, page.Body.Length);
}
var processingState = ProcessingState.Create(info);
var buffer = new float[info.Channels][];
buffer[0] = new float[SampleSize];
buffer[1] = new float[SampleSize];
var readbuffer = new byte[SampleSize];
while (!oggStream.Finished)
{
int bytes = streamIn.Read(readbuffer, 0, readbuffer.Length);
if (bytes == 0)
{
processingState.WriteEndOfStream();
}
else
{
var samples = bytes;
for (var i = 1; i < samples; i += 2)
{
buffer[0][i] = (short)((readbuffer[i] << 8) | (0x00ff & readbuffer[i - 1])) / 32768f;
buffer[1][i] = buffer[0][i];
}
processingState.WriteData(buffer, bytes);
}
while (!oggStream.Finished &&
processingState.PacketOut(out OggPacket packet))
{
oggStream.PacketIn(packet);
while (!oggStream.Finished &&
oggStream.PageOut(out page, false))
{
streamOut.Write(page.Header, 0, page.Header.Length);
streamOut.Write(page.Body, 0, page.Body.Length);
}
}
}
byte[] oggBytes = streamOut.ToArray();
streamIn.Close();
streamOut.Close();
return(oggBytes);
}
public static string ConvertMp3toOgg(string mp3Path, string outputDir)
{
var oggName = Path.GetFileNameWithoutExtension(mp3Path) + ".ogg";
try
{
using (var mp3 = new Mp3FileReader(mp3Path))
using (var wav = WaveFormatConversionStream.CreatePcmStream(mp3))
using (var ogg = new FileStream(Path.Combine(outputDir, oggName), FileMode.Create, FileAccess.Write))
{
const int SampleSize = 4096;
// Here's a reference for the code below:
// https://github.com/SteveLillis/.NET-Ogg-Vorbis-Encoder/blob/master/OggVorbisEncoder.Example/Encoder.cs
var info = VorbisInfo.InitVariableBitRate(2, wav.WaveFormat.SampleRate, 0.5f);
// set up our packet->stream encoder
var serial = new Random().Next();
var oggStream = new OggStream(serial);
// =========================================================
// HEADER
// =========================================================
// Vorbis streams begin with three headers; the initial header (with
// most of the codec setup parameters) which is mandated by the Ogg
// bitstream spec. The second header holds any comment fields. The
// third header holds the bitstream codebook.
var comments = new Comments();
// comments.AddTag("ARTIST", "TEST");
var infoPacket = HeaderPacketBuilder.BuildInfoPacket(info);
var commentsPacket = HeaderPacketBuilder.BuildCommentsPacket(comments);
var booksPacket = HeaderPacketBuilder.BuildBooksPacket(info);
oggStream.PacketIn(infoPacket);
oggStream.PacketIn(commentsPacket);
oggStream.PacketIn(booksPacket);
// Flush to force audio data onto its own page per the spec
OggPage page;
while (oggStream.PageOut(out page, true))
{
ogg.Write(page.Header, 0, page.Header.Length);
ogg.Write(page.Body, 0, page.Body.Length);
}
// =========================================================
// BODY (Audio Data)
// =========================================================
var processingState = ProcessingState.Create(info);
var buffer = new float[info.Channels][];
buffer[0] = new float[SampleSize];
buffer[1] = new float[SampleSize];
var readbuffer = new byte[SampleSize * 4];
while (!oggStream.Finished)
{
var bytes = wav.Read(readbuffer, 0, readbuffer.Length);
if (bytes == 0)
{
processingState.WriteEndOfStream();
}
else
{
var samples = bytes / 4;
for (var i = 0; i < samples; i++)
{
// uninterleave samples
buffer[0][i] = (short)((readbuffer[i * 4 + 1] << 8) | (0x00ff & readbuffer[i * 4])) / 32768f;
buffer[1][i] = (short)((readbuffer[i * 4 + 3] << 8) | (0x00ff & readbuffer[i * 4 + 2])) / 32768f;
}
processingState.WriteData(buffer, samples);
}
while (!oggStream.Finished &&
processingState.PacketOut(out OggPacket packet))
{
oggStream.PacketIn(packet);
while (!oggStream.Finished &&
oggStream.PageOut(out page, false))
{
ogg.Write(page.Header, 0, page.Header.Length);
ogg.Write(page.Body, 0, page.Body.Length);
}
}
}
}
}
catch (NAudio.MmException e)
{
Console.WriteLine(e);
// Just retry
return(ConvertMp3toOgg(mp3Path, outputDir));
}
catch (InvalidOperationException e)
{
Console.WriteLine(e);
Console.WriteLine("Error while converting to " + oggName);
return(oggName);
}
return(oggName);
}