public void Convert()
{
var tempWavFile = GetTemporaryWavFileName();
var bitRate = new TagLibEditor().GetBitRate(aifFile);
using (var reader = new AiffFileReader(aifFile))
{
WaveFileWriter.CreateWaveFile(tempWavFile, reader);
}
var mp3 = new LameConverter(tempWavFile, mp3File, bitRate);
mp3.Convert();
}
private static void ConvertAiffToWav(string aiffFile, string wavFile)
{
using (var reader = new AiffFileReader(aiffFile))
{
using (var writer = new WaveFileWriter(wavFile, reader.WaveFormat))
{
byte[] buffer = new byte[4096];
int bytesRead = 0;
do
{
bytesRead = reader.Read(buffer, 0, buffer.Length);
writer.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
}
}
}
public IWaveProvider Load(string fileName)
{
WaveStream readerStream = null;
if (fileName.EndsWith(".wav", StringComparison.OrdinalIgnoreCase)){
readerStream = new WaveFileReader(fileName);
if (readerStream.WaveFormat.Encoding != WaveFormatEncoding.Pcm && readerStream.WaveFormat.Encoding != WaveFormatEncoding.IeeeFloat)
{
readerStream = WaveFormatConversionStream.CreatePcmStream(readerStream);
readerStream = new BlockAlignReductionStream(readerStream);
}
}else if (fileName.EndsWith(".mp3", StringComparison.OrdinalIgnoreCase)){
readerStream = new Mp3FileReader(fileName);
}else if (fileName.EndsWith(".aiff")){
readerStream = new AiffFileReader(fileName);
}else{
readerStream = new MediaFoundationReader(fileName);
}
return readerStream;
}
public static byte[] ConvertAiffToMp3(byte[] aiffFile, string directory)
{
byte[] mp3bytes = null;
var newFormat = new WaveFormat(bitRate, bitDepth, channels);
try
{
uniqueTempFileCounter += 1;
var tempFile = Path.Combine(directory, "tempdata"+ uniqueTempFileCounter +".wav");
using (var ms = new MemoryStream(aiffFile))
using (var rdr = new AiffFileReader(ms))
{
if (rdr.WaveFormat.BitsPerSample == 24) //can't go from 24 bits aif to mp3 directly, create temporary 16 bit wav
{
ISampleProvider sampleprovider = new Pcm24BitToSampleProvider(rdr); //24 bit to sample
var resampler = new WdlResamplingSampleProvider(sampleprovider, sampleRate); //sample to new sample rate
WaveFileWriter.CreateWaveFile16(tempFile, resampler); //sample to actual wave file
mp3bytes = ConvertWavToMp3(tempFile, true); //file to mp3 bytes
}
else
{
using (var retMs = new MemoryStream())
using (var wtr = new LameMP3FileWriter(retMs, rdr.WaveFormat, bitRate))
{
rdr.CopyTo(wtr);
mp3bytes = retMs.ToArray();
}
}
}
}
catch (Exception e)
{
Debug.WriteLine(e);
}
return mp3bytes;
}
private static WaveStream CreateReaderStream(string fileName)
{
WaveStream readerStream = null;
if (fileName.EndsWith(".wav", StringComparison.OrdinalIgnoreCase))
{
readerStream = new WaveFileReader(fileName);
if (readerStream.WaveFormat.Encoding == WaveFormatEncoding.Pcm ||
readerStream.WaveFormat.Encoding == WaveFormatEncoding.IeeeFloat) return readerStream;
readerStream = WaveFormatConversionStream.CreatePcmStream(readerStream);
readerStream = new BlockAlignReductionStream(readerStream);
}
else if (fileName.EndsWith(".mp3", StringComparison.OrdinalIgnoreCase))
readerStream = new Mp3FileReader(fileName);
else if (fileName.EndsWith(".aiff"))
readerStream = new AiffFileReader(fileName);
return readerStream;
}
private static AiffFileReader.AiffChunk ReadChunkHeader(BinaryReader br)
{
AiffFileReader.AiffChunk result = new AiffFileReader.AiffChunk((uint)br.BaseStream.Position, AiffFileReader.ReadChunkName(br), AiffFileReader.ConvertInt(br.ReadBytes(4)));
return(result);
}
public static void ReadAiffHeader(Stream stream, out WaveFormat format, out long dataChunkPosition, out int dataChunkLength, List <AiffFileReader.AiffChunk> chunks)
{
dataChunkPosition = -1L;
format = null;
BinaryReader binaryReader = new BinaryReader(stream);
if (AiffFileReader.ReadChunkName(binaryReader) != "FORM")
{
throw new FormatException("Not an AIFF file - no FORM header.");
}
AiffFileReader.ConvertInt(binaryReader.ReadBytes(4));
string a = AiffFileReader.ReadChunkName(binaryReader);
if (a != "AIFC" && a != "AIFF")
{
throw new FormatException("Not an AIFF file - no AIFF/AIFC header.");
}
dataChunkLength = 0;
while (binaryReader.BaseStream.Position < binaryReader.BaseStream.Length)
{
AiffFileReader.AiffChunk item = AiffFileReader.ReadChunkHeader(binaryReader);
if (item.ChunkName == "COMM")
{
short channels = AiffFileReader.ConvertShort(binaryReader.ReadBytes(2));
AiffFileReader.ConvertInt(binaryReader.ReadBytes(4));
short bits = AiffFileReader.ConvertShort(binaryReader.ReadBytes(2));
double num = IEEE.ConvertFromIeeeExtended(binaryReader.ReadBytes(10));
format = new WaveFormat((int)num, (int)bits, (int)channels);
if (item.ChunkLength > 18u && a == "AIFC")
{
string a2 = new string(binaryReader.ReadChars(4)).ToLower();
if (a2 != "none")
{
throw new FormatException("Compressed AIFC is not supported.");
}
binaryReader.ReadBytes((int)(item.ChunkLength - 22u));
}
else
{
binaryReader.ReadBytes((int)(item.ChunkLength - 18u));
}
}
else if (item.ChunkName == "SSND")
{
uint num2 = AiffFileReader.ConvertInt(binaryReader.ReadBytes(4));
AiffFileReader.ConvertInt(binaryReader.ReadBytes(4));
dataChunkPosition = (long)((ulong)(item.ChunkStart + 16u + num2));
dataChunkLength = (int)(item.ChunkLength - 8u);
binaryReader.ReadBytes((int)(item.ChunkLength - 8u));
}
else
{
if (chunks != null)
{
chunks.Add(item);
}
binaryReader.ReadBytes((int)item.ChunkLength);
}
if (item.ChunkName == "\0\0\0\0")
{
break;
}
}
if (format == null)
{
throw new FormatException("Invalid AIFF file - No COMM chunk found.");
}
if (dataChunkPosition == -1L)
{
throw new FormatException("Invalid AIFF file - No SSND chunk found.");
}
}
public AiffFileReader(Stream inputStream)
{
this.waveStream = inputStream;
AiffFileReader.ReadAiffHeader(this.waveStream, out this.waveFormat, out this.dataPosition, out this.dataChunkLength, this.chunks);
this.Position = 0L;
}
/// <summary>
/// Creates an input WaveChannel
/// (Audio file reader for MP3/WAV/OGG/FLAC/WMA/AIFF/Other formats in the future)
/// </summary>
/// <param name="filename"></param>
public static WaveStream CreateInputWaveChannel(string filename)
{
WaveStream m_blockAlignedStream = null;
WaveStream m_waveReader = null;
WaveChannel32 m_waveChannel = null;
string fileExt = Path.GetExtension( filename.ToLower() );
if ( fileExt == MP3Extension ) {
m_waveReader = new Mp3FileReader(filename);
m_blockAlignedStream = new BlockAlignReductionStream(m_waveReader);
// Wave channel - reads from file and returns raw wave blocks
m_waveChannel = new WaveChannel32(m_blockAlignedStream);
} else if ( fileExt == WAVExtension ) {
m_waveReader = new WaveFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm) {
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
} if (m_waveReader.WaveFormat.BitsPerSample != 16) {
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
} else if (fileExt == OGGVExtension) {
m_waveReader = new OggFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm) {
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
} if (m_waveReader.WaveFormat.BitsPerSample != 16) {
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
} else if (fileExt == FLACExtension) {
m_waveReader = new FLACFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm) {
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
} if (m_waveReader.WaveFormat.BitsPerSample != 16) {
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
}
else if (fileExt == WMAExtension) {
m_waveReader = new WMAFileReader(filename);
if (m_waveReader.WaveFormat.Encoding != WaveFormatEncoding.Pcm) {
m_waveReader = WaveFormatConversionStream.CreatePcmStream(m_waveReader);
m_waveReader = new BlockAlignReductionStream(m_waveReader);
} if (m_waveReader.WaveFormat.BitsPerSample != 16) {
var format = new WaveFormat(m_waveReader.WaveFormat.SampleRate,
16, m_waveReader.WaveFormat.Channels);
m_waveReader = new WaveFormatConversionStream(format, m_waveReader);
}
m_waveChannel = new WaveChannel32(m_waveReader);
} else if (fileExt == AIFFExtension) {
m_waveReader = new AiffFileReader(filename);
m_waveChannel = new WaveChannel32(m_waveReader);
} else {
throw new ApplicationException("Cannot create Input WaveChannel - Unknown file type: " + fileExt);
}
//return m_waveReader;
return m_waveChannel;
}
