static string GetUIntProperty(IMFMetadata metadata, string name)
{
PropVariant value = new PropVariant();
metadata.GetProperty(name, value);
return(value.GetVariantType() == ConstPropVariant.VariantType.UInt32 ? value.GetUInt().ToString() : null);
}
public HResult GetMFMetadata(
IMFPresentationDescriptor pPresentationDescriptor,
int dwStreamIdentifier,
int dwFlags,
out IMFMetadata ppMFMetadata)
{
ppMFMetadata = this;
return(HResult.S_OK);
}
/// <summary>
/// Gets a list of all the metadata property names on this object.
/// </summary>
/// <param name="metadata">A valid IMFMetadata instance.</param>
/// <param name="propertyNames">Receives an array strings.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetAllPropertyNames(this IMFMetadata metadata, out string[] propertyNames)
{
if (metadata == null)
throw new ArgumentNullException("metadata");
propertyNames = null;
using(PropVariant results = new PropVariant())
{
HResult hr = metadata.GetAllPropertyNames(results);
if (hr.Succeeded())
{
propertyNames = results.GetStringArray();
}
return hr;
}
}
static void ConvertFile(string sourceFileName, string destFileName)
{
Console.WriteLine($"------------------------------------------------------------");
Console.WriteLine($" Source: {sourceFileName}");
IMFMediaSource mediaSource = GetMediaSource(sourceFileName);
int bitRate = GetBitRate(mediaSource);
IMFMetadata metadata = GetMetadata(mediaSource);
ID3TagData tagData = new ID3TagData()
{
Title = GetStringProperty(metadata, "Title"),
Artist = GetStringProperty(metadata, "Author"),
Album = GetStringProperty(metadata, "WM/AlbumTitle"),
Year = GetStringProperty(metadata, "WM/Year"),
Genre = GetStringProperty(metadata, "WM/Genre"),
Track = GetUIntProperty(metadata, "WM/TrackNumber"),
AlbumArtist = GetStringProperty(metadata, "WM/AlbumArtist")
};
COMBase.SafeRelease(metadata);
metadata = null;
COMBase.SafeRelease(mediaSource);
mediaSource = null;
Console.WriteLine($" Title: {tagData.Title}");
Console.WriteLine($"Album artist: {tagData.AlbumArtist}");
Console.WriteLine($" Artist: {tagData.Artist}");
Console.WriteLine($" Album: {tagData.Album}");
Console.WriteLine($" Year: {tagData.Year}");
Console.WriteLine($" Genre: {tagData.Genre}");
Console.WriteLine($" Track: {tagData.Track}");
Console.WriteLine($" Bit rate: {bitRate}");
using (AudioFileReader reader = new AudioFileReader(sourceFileName))
{
using (LameMP3FileWriter writer = new LameMP3FileWriter(destFileName, reader.WaveFormat, bitRate, tagData))
{
reader.CopyTo(writer);
}
}
Console.WriteLine($" Destination: {destFileName}");
}
