private static Id3Tagv2 LoadV4(BinaryReader reader, byte versionMinor)
{
var tag = new Id3Tagv2();
tag.Version = new Version(4, versionMinor);
var headerFlags = (TagHeaderFlags)reader.ReadByte();
if (headerFlags.HasFlag(TagHeaderFlags.Unsynchronisation))
throw new NotSupportedException();
if (headerFlags.HasFlag(TagHeaderFlags.ExtendedHeader))
throw new NotSupportedException();
if (headerFlags.HasFlag(TagHeaderFlags.FooterPresent))
throw new NotSupportedException();
var tagSize = EndianHelper.BigToLittleEndianInt32(reader.ReadBytes(4), true);
var offset = 0;
while (offset < tagSize)
{
if (reader.PeekChar() == 0)
{
tag.PaddingSize = tagSize - offset;
break;
}
var frameId = new string(reader.ReadChars(4));
var frameSize = EndianHelper.BigToLittleEndianInt32(reader.ReadBytes(4), true);
var frameFlags = (FrameHeaderFlagsV4)EndianHelper.BigToLittleEndianInt16(reader.ReadBytes(2));
if (frameFlags.HasFlag(FrameHeaderFlagsV4.GroupingIdentity))
throw new NotSupportedException();
if (frameFlags.HasFlag(FrameHeaderFlagsV4.Compression))
throw new NotSupportedException();
if (frameFlags.HasFlag(FrameHeaderFlagsV4.Encryption))
throw new NotSupportedException();
if (frameFlags.HasFlag(FrameHeaderFlagsV4.Unsynchronisation))
throw new NotSupportedException();
if (frameFlags.HasFlag(FrameHeaderFlagsV4.DataLengthIndicator))
throw new NotSupportedException();
var frameData = reader.ReadBytes(frameSize);
var frame = GetFrame(frameId, frameData);
tag.Frames.Add(frame);
offset += frameSize + 10;
}
return tag;
}
public void SaveTo(DirectoryInfo discDirectory, IProgress progress, CancellationToken cancellationToken)
{
var sourceFilePath = SourceFile.FullName;
var mpegDataOffset = _mpegDataOffset;
var mpegDataSize = _mpegDataSize;
string reEncodedFilePath = null;
if (NeedsReEncoding() && _session.ReEncodeFiles)
{
var encoder = _context.GetEncoder();
reEncodedFilePath = Path.GetTempFileName();
var minBirtate = Disc.MostCommonBitrate != null ? Disc.MostCommonBitrate.Value : MpegFileInfo.MinBitrate;
var maxBirtate = Disc.MostCommonBitrate != null ? Disc.MostCommonBitrate.Value : MpegFileInfo.MaxBitrate;
var sampleRate = Disc.MostCommonSampleRate.Value;
var channelMode = Disc.MostCommonChannelMode.Value;
encoder.Encode(sourceFilePath, reEncodedFilePath, minBirtate, maxBirtate, sampleRate, channelMode);
var tempTrack = new Track(new FileInfo(reEncodedFilePath), null, _session, _context);
mpegDataOffset = tempTrack._mpegDataOffset;
mpegDataSize = tempTrack._mpegDataSize;
sourceFilePath = reEncodedFilePath;
}
using (var sourceStream = File.Open(sourceFilePath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
using (var destinationStream = File.Open(Path.Combine(discDirectory.FullName, FileName), FileMode.CreateNew, FileAccess.Write, FileShare.None))
{
var id3Tagv2 = new Id3Tagv2();
id3Tagv2.Version = new Version(3, 0);
id3Tagv2.Frames.Add(new Tpe1Frame(Disc.Album.ArtistName));
id3Tagv2.Frames.Add(new TyerFrame(Disc.Album.ReleaseYear));
id3Tagv2.Frames.Add(new TalbFrame(Disc.Album.FullName));
id3Tagv2.Frames.Add(new TposFrame(string.Format("{0}/{1}", Disc.Index, Disc.Album.Discs.Count)));
id3Tagv2.Frames.Add(new TrckFrame(string.Format("{0}/{1}", Index, Disc.Tracks.Count)));
id3Tagv2.Frames.Add(new Tit2Frame(Name));
id3Tagv2.Frames.Add(new PrivFrame("RHAPSODY", Encoding.ASCII.GetBytes(string.Format("RHAPSODY/{0}", VersionHelper.GetAppVersion()))));
if (Disc.Album.Cover != null)
id3Tagv2.Frames.Add(new ApicFrame(Disc.Album.Cover, PictureType.FrontCover));
if (!string.IsNullOrEmpty(Disc.Name))
id3Tagv2.Frames.Add(new TsstFrame(Disc.Name));
id3Tagv2.WriteTo(destinationStream);
StreamHelper.Copy(sourceStream, destinationStream, mpegDataOffset, mpegDataSize);
}
}
if (reEncodedFilePath != null)
File.Delete(reEncodedFilePath);
}
