public static Mp4Box CreateMp4Box(byte[] buffer, int offset)
{
if ((buffer != null) &&
(offset + 8 < buffer.Length))
{
Mp4Box box = CreateMp4BoxFromType(ReadMp4BoxType(buffer, offset));
if (box != null)
{
box.Length = ReadMp4BoxLength(buffer, offset);
if ((offset + box.Length <= buffer.Length) && (box.Length > 8))
{
box.Type = ReadMp4BoxType(buffer, offset);
box.SetPath("/" + box.GetBoxType());
box.Data = ReadMp4BoxData(buffer, offset, box.Length);
List <Mp4Box> list = box.GetChildren();
if ((list != null) && (list.Count > 0))
{
foreach (var b in list)
{
box.AddMp4Box(b);
}
}
return(box);
}
}
}
return(null);
}
public bool AddMp4Box(Mp4Box box, bool bAddInData = false)
{
if (Children == null)
{
Children = new List <Mp4Box>();
}
if (Children != null)
{
box.SetParent(this);
box.SetPath(this.GetPath() + "/" + box.GetBoxType());
Children.Add(box);
if (bAddInData == true)
{
Append(box.Data);
}
return(true);
}
return(false);
}
public static bool WriteMp4Box(Mp4Box box, FileStream fs)
{
bool result = false;
if ((box != null) && (fs != null))
{
try
{
byte[] header = new byte[8];
Mp4Box.WriteMp4BoxInt32(header, 0, box.Length);
Mp4Box.WriteMp4BoxString(header, 4, box.GetBoxType());
fs.Write(header, 0, 8);
fs.Write(box.Data, 0, box.Data.Length);
result = true;
}
catch (Exception ex)
{
System.Diagnostics.Debug.Write("Exception while writing box in file: " + ex.Message);
}
}
return(result);
}