/// <summary>
/// Writes the data representing this CueSheet track to the given stream.
/// </summary>
/// <param name="targetStream"></param>
public void WriteBlockData(Stream targetStream)
{
targetStream.Write(BinaryDataHelper.GetBytesUInt64(this.trackOffset), 0, 8);
targetStream.WriteByte(this.TrackNumber);
targetStream.Write(BinaryDataHelper.GetPaddedAsciiBytes(this.isrc, ISRC_LENGTH), 0, ISRC_LENGTH);
byte trackAndEmphasis = 0;
if (this.IsAudioTrack)
{
trackAndEmphasis += 0x80; // Most significant bit to 1
}
if (this.IsPreEmphasis)
{
trackAndEmphasis += 0x40; // Second most significant bit to 1
}
targetStream.WriteByte(trackAndEmphasis);
byte[] nullData = new byte[RESERVED_NULLDATA_LENGTH];
targetStream.Write(nullData, 0, nullData.Length);
targetStream.WriteByte(this.IndexPointCount);
foreach (var indexPoint in this.IndexPoints)
{
indexPoint.WriteBlockData(targetStream);
}
}
/// <summary>
/// Will write the data describing this metadata block to the given stream.
/// </summary>
/// <param name="targetStream">Stream to write the data to.</param>
public override void WriteBlockData(Stream targetStream)
{
if (this.Tracks.Count > 0)
{
var lastTrack = this.Tracks[this.Tracks.Count - 1];
if (!lastTrack.IsLeadOut)
{
throw new FlacLibSharp.Exceptions.FlacLibSharpInvalidFormatException(string.Format("CueSheet is invalid, last track (nr {0}) is not the lead-out track.", lastTrack.TrackNumber));
}
}
else
{
throw new FlacLibSharp.Exceptions.FlacLibSharpInvalidFormatException("CueSheet is invalid as it has no tracks, it must have at least one track (the lead-out track).");
}
// TODO: this value in the header should also update when someone add/removes tracks or track index points ...
this.Header.MetaDataBlockLength = CalculateMetaDataBlockLength();
this.Header.WriteHeaderData(targetStream);
targetStream.Write(BinaryDataHelper.GetPaddedAsciiBytes(this.MediaCatalog, MEDIACATALOG_MAX_LENGTH), 0, MEDIACATALOG_MAX_LENGTH);
targetStream.Write(BinaryDataHelper.GetBytesUInt64(this.LeadInSampleCount), 0, 8);
byte isCDCueSheet = 0;
if (this.isCDCueSheet)
{
isCDCueSheet = 0x80; // Most significant bit should be 1
}
targetStream.WriteByte(isCDCueSheet);
// Now we need to write 258 bytes of 0 data ("reserved")
byte[] nullData = new byte[RESERVED_NULLDATA_LENGTH];
targetStream.Write(nullData, 0, nullData.Length);
// The number of tracks i 1 byte in size ...
targetStream.WriteByte(this.TrackCount);
foreach (var track in Tracks)
{
track.WriteBlockData(targetStream);
}
}