public static string GetBitrateString(MpegFileInfo mpegFileInfo)
{
if (mpegFileInfo.IsVbr)
return "VBR";
return (mpegFileInfo.Bitrate / 1000).ToString(CultureInfo.InvariantCulture);
}
public Track(FileInfo sourceFile, Disc disc, Session session, Context context)
: this(session, context)
{
SourceFile = sourceFile;
Disc = disc;
// Find tags
using (var stream = new BufferedStream(sourceFile.Open(FileMode.Open, FileAccess.Read, FileShare.Read)))
{
_mpegDataOffset = 0;
_mpegDataSize = stream.Length;
Stream dataStream;
// Better be sorted from outer to inner
Type[] tagTypes = {
typeof(Id3v2Tag),
typeof(Id3v1Tag),
typeof(Lyrics3v2Tag),
typeof(ApeTag)
};
while (true)
{
dataStream = new SubStream(stream, _mpegDataOffset, _mpegDataSize);
var anyTagFound = false;
foreach (var tagType in tagTypes)
{
var tag = (ITag)Activator.CreateInstance(tagType);
if (!tag.Read(dataStream))
continue;
if (tag.Position == TagPosision.Beginning)
{
_mpegDataOffset += tag.Size;
_mpegDataSize -= tag.Size;
}
else
{
_mpegDataSize -= tag.Size;
}
Tags.Add(tag);
anyTagFound = true;
break;
}
if (!anyTagFound)
break;
}
MpegFileInfo = new MpegFileInfo(dataStream);
}
}
public static string GetAudioVersionString(MpegFileInfo mpegFileInfo)
{
switch (mpegFileInfo.AudioVersion)
{
case AudioVersion.Mpeg1:
return "MPEG 1";
case AudioVersion.Mpeg2:
return "MPEG 2";
case AudioVersion.Mpeg25:
return "MPEG 2.5";
}
return null;
}
public static string GetLayerString(MpegFileInfo mpegFileInfo)
{
switch (mpegFileInfo.Layer)
{
case Layer.Layer1:
return "Layer I";
case Layer.Layer2:
return "Layer II";
case Layer.Layer3:
return "Layer III";
}
return null;
}
public static string GetChannelModeString(MpegFileInfo mpegFileInfo)
{
switch (mpegFileInfo.ChannelMode)
{
case ChannelMode.DualChannel:
return "Dual Channel";
case ChannelMode.JointStereo:
return "Joint Stereo";
case ChannelMode.Mono:
return "Mono";
case ChannelMode.Stereo:
return "Stereo";
}
return null;
}
public static string GetSampleRateString(MpegFileInfo mpegFileInfo)
{
return mpegFileInfo.SampleRate.ToString("#,###");
}
