private Tag FindMpcTag(TagTypes type, bool create)
{
switch (type)
{
case TagTypes.Id3v2:
{
if (create && id3v2Tag == null)
{
id3v2Tag = new Id3v2Tag();
if (tag != null)
TagLib.Tag.Duplicate(tag, id3v2Tag, true);
tag.SetTags(apeTag, id3v2Tag, id3v1Tag);
}
return id3v2Tag;
}
case TagTypes.Id3v1:
{
if (create && id3v1Tag == null)
{
id3v1Tag = new Id3v1Tag();
if (tag != null)
TagLib.Tag.Duplicate(tag, id3v1Tag, true);
tag.SetTags(apeTag, id3v2Tag, id3v1Tag);
}
return id3v1Tag;
}
case TagTypes.Ape:
{
if (create && apeTag == null)
{
apeTag = new ApeTag();
if (tag != null)
TagLib.Tag.Duplicate(tag, apeTag, true);
tag.SetTags(apeTag, id3v2Tag, id3v1Tag);
}
return apeTag;
}
default:
return null;
}
}
private Tag FindFlacTag(TagTypes type, bool create)
{
switch (type)
{
case TagTypes.Id3v1:
{
if (create && id3v1_tag == null)
{
id3v1_tag = new Id3v1Tag();
if (tag != null)
TagLib.Tag.Duplicate(tag, id3v1_tag, true);
tag.SetTags(comment, id3v2_tag, id3v1_tag);
}
return id3v1_tag;
}
case TagTypes.Id3v2:
{
if (create && id3v2_tag == null)
{
id3v2_tag = new Id3v2Tag();
if (tag != null)
TagLib.Tag.Duplicate(tag, id3v2_tag, true);
tag.SetTags(comment, id3v2_tag, id3v1_tag);
}
return id3v2_tag;
}
case TagTypes.Xiph:
{
if (create && comment == null)
{
comment = new OggXiphComment();
if (tag != null)
TagLib.Tag.Duplicate(tag, comment, true);
tag.SetTags(comment, id3v2_tag, id3v1_tag);
}
return comment;
}
default:
return null;
}
}
private void Read(ReadStyle propertiesStyle)
{
long flacDataBegin;
long flacDataEnd;
// Look for an ID3v2 tag
long id3v2Location = FindId3v2();
if (id3v2Location >= 0)
{
id3v2_tag = new Id3v2Tag(this, id3v2Location);
flacDataBegin = id3v2Location + id3v2_tag.Header.CompleteTagSize;
}
else
flacDataBegin = 0;
// Look for an ID3v1 tag
long id3v1_location = FindId3v1();
if (id3v1_location >= 0)
{
id3v1_tag = new Id3v1Tag(this, id3v1_location);
flacDataEnd = id3v1_location;
}
else
flacDataEnd = Length;
// Look for FLAC metadata, including vorbis comments
xiph_comment_data = Scan(flacDataBegin, flacDataEnd);
if (!IsValid) return;
if (XiphCommentData.Count > 0)
comment = new OggXiphComment(XiphCommentData);
tag.SetTags(comment, id3v2_tag, id3v1_tag);
FindFlacTag(TagTypes.Xiph, true);
if (propertiesStyle != ReadStyle.None)
properties = new FlacProperties(stream_info_data, stream_length, propertiesStyle);
}
public static Id3v2AttachedPictureFrame Find(Id3v2Tag tag, string description, PictureType type)
{
if (tag != null)
{
foreach (Id3v2AttachedPictureFrame frame in tag.GetFrames("APIC"))
if (frame != null && frame.Description == description && frame.Type == type)
return frame;
return null;
}
else throw new ArgumentNullException("tag");
}
public bool Strip (TagTypes types, bool freeMemory)
{
FileAccessMode original_mode = Mode;
if(IsReadOnly)
{
TagLibDebugger.Debug("Mpeg.File.Strip() - Cannot strip tags from a read only file.");
return false;
}
try
{
Mode = FileAccessMode.Write;
}
catch (TagLibException)
{
TagLibDebugger.Debug("Mpeg.File.Strip() - Cannot strip tags from a read only file.");
return false;
}
if ((types & TagTypes.Id3v2) != 0)
{
long id3v2_location = FindId3v2 ();
if (id3v2_location >= 0)
{
Seek(id3v2_location);
Id3v2Header header = new Id3v2Header (ReadBlock ((int)Id3v2Header.Size));
if (header.TagSize == 0)
TagLibDebugger.Debug ("Mpc.File.Save() -- Id3v2 header is broken. Ignoring.");
else
RemoveBlock (id3v2_location, (int) header.CompleteTagSize);
}
if (freeMemory)
id3v2_tag = null;
}
long id3v1_location = FindId3v1 ();
if ((types & TagTypes.Id3v1) != 0)
{
if (id3v1_location >= 0)
{
Truncate(id3v1_location);
id3v1_location = -1;
}
if (freeMemory)
id3v1_tag = null;
}
if ((types & TagTypes.Ape) != 0)
{
long ape_location = FindApe (id3v1_location >= 0);
if (ape_location != -1)
{
Seek(ape_location);
int ape_size = (int) (new ApeFooter(ReadBlock((int) ApeFooter.Size))).CompleteTagSize;
ape_location = ape_location + ApeFooter.Size - ape_size;
RemoveBlock(ape_location, ape_size);
}
if (freeMemory)
ape_tag = null;
}
tag.SetTags(id3v2_tag, ape_tag, id3v1_tag);
Mode = original_mode;
return true;
}
private void Read(ReadStyle propertiesStyle)
{
// Look for an ID3v2 tag
long id3v2_location = FindId3v2();
if (id3v2_location >= 0)
id3v2_tag = new Id3v2Tag(this, id3v2_location);
// Look for an ID3v1 tag
long id3v1_location = FindId3v1();
if (id3v1_location >= 0)
id3v1_tag = new Id3v1Tag(this, id3v1_location);
// Look for an APE tag
long ape_location = FindApe(id3v1_location >= 0);
if (ape_location >= 0)
ape_tag = new ApeTag(this, ape_location);
tag.SetTags(id3v2_tag, ape_tag, id3v1_tag);
FindMpegTag(TagTypes.Id3v2, true);
if (propertiesStyle != ReadStyle.None)
properties = new MpegProperties(this, propertiesStyle);
}
public static Id3v2CommentsFrame Find(Id3v2Tag tag, string description)
{
if (tag != null)
{
foreach (Id3v2CommentsFrame frame in tag.GetFrames("COMM"))
if (frame != null && frame.Description == description)
return frame;
return null;
}
else throw new ArgumentNullException("tag");
}
public void Remove(TagTypes types)
{
if ((types & TagTypes.Id3v1) != 0)
id3v1Tag = null;
if ((types & TagTypes.Id3v2) != 0)
id3v2Tag = null;
if ((types & TagTypes.Ape) != 0)
apeTag = null;
tag.SetTags(apeTag, id3v2Tag, id3v1Tag);
}
private void Read(ReadStyle propertiesStyle)
{
// Look for an ID3v1 tag
long id3v1Location = FindId3v1();
if (id3v1Location >= 0)
{
id3v1Tag = new Id3v1Tag(this, id3v1Location);
}
// Look for an APE tag
long apeLocation = FindApe(id3v1Location != 0);
if (apeLocation >= 0)
apeTag = new ApeTag(this, apeLocation);
// Look for an ID3v2 tag
long id3v2Location = FindId3v2();
if (id3v2Location >= 0)
id3v2Tag = new Id3v2Tag(this, id3v2Location);
tag.SetTags(apeTag, id3v2Tag, id3v1Tag);
FindMpcTag(TagTypes.Ape, true);
// Look for MPC metadata
Seek((id3v2Location >= 0) ? (id3v2Location + id3v2Tag.Header.CompleteTagSize) : 0);
if (propertiesStyle != ReadStyle.None)
properties = new MpcProperties(ReadBlock((int)MpcProperties.HeaderSize),
Length - Tell - apeTag.Footer.CompleteTagSize);
}
public bool Strip(TagTypes types, bool freeMemory)
{
FileAccessMode original_mode = Mode;
if (IsReadOnly)
{
TagLibDebugger.Debug("Mpeg.File.Strip() - Cannot strip tags from a read only file.");
return(false);
}
try
{
Mode = FileAccessMode.Write;
}
catch (TagLibException)
{
TagLibDebugger.Debug("Mpeg.File.Strip() - Cannot strip tags from a read only file.");
return(false);
}
if ((types & TagTypes.Id3v2) != 0)
{
long id3v2_location = FindId3v2();
if (id3v2_location >= 0)
{
Seek(id3v2_location);
Id3v2Header header = new Id3v2Header(ReadBlock((int)Id3v2Header.Size));
if (header.TagSize == 0)
{
TagLibDebugger.Debug("Mpc.File.Save() -- Id3v2 header is broken. Ignoring.");
}
else
{
RemoveBlock(id3v2_location, (int)header.CompleteTagSize);
}
}
if (freeMemory)
{
id3v2_tag = null;
}
}
long id3v1_location = FindId3v1();
if ((types & TagTypes.Id3v1) != 0)
{
if (id3v1_location >= 0)
{
Truncate(id3v1_location);
id3v1_location = -1;
}
if (freeMemory)
{
id3v1_tag = null;
}
}
if ((types & TagTypes.Ape) != 0)
{
long ape_location = FindApe(id3v1_location >= 0);
if (ape_location != -1)
{
Seek(ape_location);
int ape_size = (int)(new ApeFooter(ReadBlock((int)ApeFooter.Size))).CompleteTagSize;
ape_location = ape_location + ApeFooter.Size - ape_size;
RemoveBlock(ape_location, ape_size);
}
if (freeMemory)
{
ape_tag = null;
}
}
tag.SetTags(id3v2_tag, ape_tag, id3v1_tag);
Mode = original_mode;
return(true);
}
public static Id3v2RelativeVolumeFrame Find(Id3v2Tag tag, string identification)
{
if (tag != null)
{
foreach (Id3v2RelativeVolumeFrame frame in tag.GetFrames("RVA2"))
{
if (frame != null && frame.Identification == identification)
return frame;
}
return null;
}
else throw new ArgumentNullException("tag");
}
public static Id3v2PrivateFrame Find(Id3v2Tag tag, string owner)
{
if (tag != null)
{
foreach (Id3v2PrivateFrame frame in tag.GetFrames("PRIV"))
if (frame != null && frame.Owner == owner)
return frame;
return null;
}
else throw new ArgumentNullException("tag");
}