internal static EditListBox load(Mp4Reader reader)
{
Debug.Assert(reader.currentBox == eBoxType.edts);
foreach (eBoxType boxType in reader.readChildren())
{
switch (boxType)
{
case eBoxType.elst:
{
var h = reader.readStructure <BoxHeader>();
int length = h.entriesCount;
if (length <= 0)
{
return(null);
}
switch (h.version)
{
case 0:
return(load32(reader, length));
case 0x1000000:
return(load64(reader, length));
}
}
break;
default:
reader.skipCurrentBox();
break;
}
}
return(null);
}
public ITagReader GetReader()
{
Mp4Reader reader = null;
string fileName = _file.Name;
if (_file.Exists)
{
#if !SILVERLIGHT
if (log.IsDebugEnabled)
{
log.Debug("File size: " + _file.Length);
}
#endif
reader = new Mp4Reader(_file);
}
else
{
#if !SILVERLIGHT
log.Info("Creating new file: " + fileName);
#endif
using (FileStream fs = _file.Create()) { }
_file.Refresh();
reader = new Mp4Reader(_file);
}
return(reader);
}
static EditListBox load64(Mp4Reader reader, int length)
{
var entries = new Entry64[length];
var bytes = entries.AsSpan().asBytes();
reader.read(bytes);
Span <ulong> integers = bytes.cast <ulong>();
for (int i = 0; i < integers.Length; i++)
{
integers[i] = BinaryPrimitives.ReverseEndianness(integers[i]);
}
int rate = reader.readStructure <int>().endian();
return(new EditListBox(entries, rate));
}
