static FrameBase ReadFrame(BinaryReader reader, string frameId, FrameFlags flags, uint frameSize)
{
#if NETSTANDARD2_0
var frameDataBuffer = reader.ReadBytes((int)frameSize);
#else
// Use heap allocations for frames > 256kB (usually pictures)
var frameDataBuffer = frameSize < 0x40000
? stackalloc byte[(int)frameSize]
: new byte[(int)frameSize];
reader.Read(frameDataBuffer);
#endif
return(FrameFactory.Build(frameId, flags, frameDataBuffer));
}
internal MetadataToTagModelAdapter(AudioMetadata metadata, int version, string encoding)
{
Header.Version = (byte)version;
var textType = encoding switch
{
"UTF16" => TextType.Utf16,
"UTF8" => TextType.Utf8,
_ => TextType.Ascii
};
AddTextFrame("TIT2", metadata.Title, textType);
AddTextFrame("TPE1", metadata.Artist, textType);
AddTextFrame("TALB", metadata.Album, textType);
AddTextFrame("TPE2", metadata.AlbumArtist, textType);
AddTextFrame("TCOM", metadata.Composer, textType);
AddTextFrame("TCON", metadata.Genre, textType);
AddTextFrame("COMM", metadata.Comment, textType);
if (version == 3)
{
AddTextFrame("TDAT", GetDateText(metadata), textType);
AddTextFrame("TYER", metadata.Year, textType);
}
else
{
AddTextFrame("TDRC", GetTimeStamp(metadata), textType);
}
AddTextFrame("TRCK", GetTrackText(metadata), textType);
AddReplayGainFrame(metadata.TrackPeak, "REPLAYGAIN_TRACK_PEAK");
AddReplayGainFrame(metadata.AlbumPeak, "REPLAYGAIN_ALBUM_PEAK");
AddReplayGainFormattedFrame(metadata.TrackGain, "REPLAYGAIN_TRACK_GAIN");
AddReplayGainFormattedFrame(metadata.AlbumGain, "REPLAYGAIN_ALBUM_GAIN");
if (metadata.CoverArt == null)
{
return;
}
// Always store images in JPEG format, since MP3 is also lossy
var lossyCoverArt = CoverArtFactory.ConvertToLossy(metadata.CoverArt);
Frames.Add(new FramePicture
{
PictureType = PictureType.CoverFront,
Mime = lossyCoverArt.MimeType,
PictureData = lossyCoverArt.Data.ToArray()
});
}
void AddReplayGainFormattedFrame(string value, string description)
{
if (!string.IsNullOrEmpty(value))
{
AddReplayGainFrame($"{value} dB", description);
}
}
void AddReplayGainFrame(string value, string description) => AddTextFrame("TXXX", value, TextType.Ascii, description, true);
void AddTextFrame(string frameId, string value, TextType textType = TextType.Ascii, string?description = null, bool fileAlter = false)
{
if (string.IsNullOrEmpty(value))
{
return;
}
var frame = (FrameText)FrameFactory.Build(frameId);
frame.Text = value;
frame.TextType = textType;
frame.FileAlter = fileAlter;
if (description != null)
{
if (frame is IFrameDescription frameDescription)
{
frameDescription.Description = description;
}
}
Frames.Add(frame);
}
