protected void Read(File file)
{
if (file == null)
{
return;
}
try
{
file.Mode = FileAccessMode.Read;
}
catch (TagLibException)
{ return; }
file.Seek(tagOffset);
footer.SetData(file.ReadBlock((int)ApeFooter.Size));
if (footer.TagSize == 0 || footer.TagSize > (uint)file.Length)
{
return;
}
file.Seek(tagOffset + ApeFooter.Size - footer.TagSize);
Parse(file.ReadBlock((int)(footer.TagSize - ApeFooter.Size)));
}
public void LoadData(long dataPosition, int dataSize)
{
if (data == null && this.File != null && this.File.Mode != FileAccessMode.Closed)
{
File.Seek(dataPosition);
data = File.ReadBlock(dataSize);
}
}
protected Mpeg4FullBox(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
File.Seek(base.DataPosition);
// First 4 buffer contain version and flag data.
version = File.ReadBlock(1)[0];
flags = File.ReadBlock(3).ToUInt();
}
public Mpeg4IsoSampleDescriptionBox(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
File.Seek(base.DataPosition);
// This box just contains a number saying how many of the first boxes
// will be SampleEntries, since they can be named whatever they want to
// be.
entryCount = File.ReadBlock(4).ToUInt();
}
public Mpeg4IsoAudioSampleEntry(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
File.Seek(base.DataPosition + 8);
channelCount = (ushort)File.ReadBlock(2).ToShort();
sampleSize = (ushort)File.ReadBlock(2).ToShort();
File.Seek(base.DataPosition + 16);
sampleRate = (uint)File.ReadBlock(4).ToUInt();
}
public Mpeg4IsoChunkLargeOffsetBox(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
File.Seek(base.DataPosition);
offsets = new List <ulong>((int)File.ReadBlock(4).ToUInt());
for (int i = 0; i < offsets.Count; i++)
{
offsets[i] = (ulong)File.ReadBlock(4).ToLong();
}
}
public Mpeg4IsoChunkOffsetBox(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
File.Seek(base.DataPosition);
offsets = new List <uint>((int)File.ReadBlock(4).ToUInt());
//new uint[(int)File.ReadBlock(4).ToUInt()];
for (int i = 0; i < offsets.Count; i++)
{
offsets[i] = File.ReadBlock(4).ToUInt();
}
}
protected void Read(File file)
{
if (file == null)
return;
try
{
file.Mode = FileAccessMode.Read;
}
catch (TagLibException)
{ return; }
file.Seek(tagOffset);
footer.SetData(file.ReadBlock((int)ApeFooter.Size));
if (footer.TagSize == 0 || footer.TagSize > (uint)file.Length)
return;
file.Seek(tagOffset + ApeFooter.Size - footer.TagSize);
Parse(file.ReadBlock((int)(footer.TagSize - ApeFooter.Size)));
}
public Mpeg4IsoHandlerBox(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
// Reserved
File.Seek(base.DataPosition + 4);
// Read the handler type.
handlerType = File.ReadBlock(4);
// Reserved
File.Seek(base.DataPosition + 20);
// Find the terminating byte and read a string from the data before it.
long end = File.Find((byte)0, File.Tell);
name = File.ReadBlock((int)(end - File.Tell)).ToString();
}
protected void Read()
{
if (file != null && file.IsValid)
{
file.Seek(tagOffset);
// read the tag -- always 128 buffer
ByteVector data = file.ReadBlock(128);
// some initial sanity checking
if (data.Count == 128 && data.StartsWith(FileIdentifier)) //"TAG"))
{
Parse(data);
}
else
{
TagLibDebugger.Debug("ID3v1 tag is not valid or could not be read at the specified offset.");
}
}
}
public Mpeg4IsoSampleEntry(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
File.Seek(base.DataPosition + 6);
dataReferenceIndex = (ushort)File.ReadBlock(2).ToShort();
}
public Mpeg4IsoMovieHeaderBox(Mpeg4BoxHeader header, Mpeg4Box parent) : base(header, parent)
{
// Size depends on version.
boxSize = Version == 1 ? 108 : 96;
// Get everything.
File.Seek(base.DataPosition);
ByteVector data = File.ReadBlock(boxSize);
int pos = 0;
// Read version one (large integers).
if (Version == 1)
{
if (data.Count >= pos + 8)
{
creationTime = (ulong)data.Mid(pos, 8).ToLong();
}
pos += 8;
if (data.Count >= pos + 8)
{
modificationTime = (ulong)data.Mid(pos, 8).ToLong();
}
pos += 8;
if (data.Count >= pos + 4)
{
timescale = data.Mid(pos, 4).ToUInt();
}
pos += 4;
if (data.Count >= pos + 8)
{
duration = (ulong)data.Mid(pos, 8).ToLong();
}
pos += 8;
}
// Read version zero (normal integers).
else
{
if (data.Count >= pos + 4)
{
creationTime = data.Mid(pos, 4).ToUInt();
}
pos += 4;
if (data.Count >= pos + 4)
{
modificationTime = data.Mid(pos, 4).ToUInt();
}
pos += 4;
if (data.Count >= pos + 4)
{
timescale = data.Mid(pos, 4).ToUInt();
}
pos += 4;
if (data.Count >= pos + 4)
{
duration = (ulong)data.Mid(pos, 4).ToUInt();
}
pos += 4;
}
// Get rate
if (data.Count >= pos + 4)
{
rate = data.Mid(pos, 4).ToUInt();
}
pos += 4;
// Get volume
if (data.Count >= pos + 2)
{
volume = (ushort)data.Mid(pos, 2).ToShort();
}
pos += 2;
// reserved
pos += 2;
// reserved
pos += 8;
// video transformation matrix
pos += 36;
// pre-defined
pos += 24;
// Get next track ID
if (data.Count >= pos + 4)
{
nextTrackId = (ushort)data.Mid(pos, 4).ToUInt();
}
}
