public TransparentStreamSeekRequestMessage(Guid id, Guid streamID, long offset, System.IO.SeekOrigin seekOrigin)
{
this.id = id;
this.streamID = streamID;
this.offset = offset;
this.seekOrigin = seekOrigin;
}
//UPGRADE_TODO: The following method was automatically generated and it must be implemented in order to preserve the class logic. 'ms-help://MS.VSCC.2003/commoner/redir/redirect.htm?keyword="jlca1232_3"'
public override System.Int64 Seek(System.Int64 offset, System.IO.SeekOrigin origin)
{
return(0);
}
public override long Seek(long offset, System.IO.SeekOrigin loc)
{
return(default(long));
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
throw new Exception("The method or operation is not implemented.");
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
try { return(m_Position = base.Seek(offset, origin)); } finally { RefreshFileInfo(); }
}
public override long Seek(long offset, System.IO.SeekOrigin origin) => throw new System.NotImplementedException();
public override Int64 Seek(Int64 offset, System.IO.SeekOrigin origin)
{
return(ostream.Seek(offset, origin));
}
public abstract long Seek(long offset, System.IO.SeekOrigin origin);
internal void Seek(System.IO.SeekOrigin origin, long offset)
{
log.Seek(origin, offset);
}
public override long Seek(long off, System.IO.SeekOrigin origin)
{
return(parent.Seek(off, origin));
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
Flush();
return(Underlying.Seek(offset, origin));
}
private long StreamSeek(IntPtr opaque, long offset, int whence)
{
if (null == _cStream || !_cStream.CanSeek)
{
(new Logger()).WriteWarning("null == _cStream || !_cStream.CanSeek");
return(-1);
}
System.IO.SeekOrigin eSeekOrigin = System.IO.SeekOrigin.Begin;
switch ((AVSeek)whence)
{
case AVSeek.SIZE:
return(-1);
lock (_cStream)
return(_cStream.Length);
case AVSeek.FLAG_BEGINNING:
eSeekOrigin = System.IO.SeekOrigin.Begin;
break;
case AVSeek.FLAG_BACKWARD:
eSeekOrigin = System.IO.SeekOrigin.End;
break;
case AVSeek.FLAG_BYTE:
eSeekOrigin = System.IO.SeekOrigin.Current;
lock (_cStream)
if (0 > offset && 0 > _cStream.Position + offset)
{
offset = 0;
}
break;
case AVSeek.FLAG_FRAME:
(new Logger()).WriteWarning("StreamSeek:FLAG_FRAME");
return(-1);
case AVSeek.FLAG_ANY:
(new Logger()).WriteWarning("StreamSeek:FLAG_ANY");
return(-1);
case AVSeek.FLAG_FORCE:
(new Logger()).WriteWarning("StreamSeek:FLAG_FORCE");
return(-1);
default:
(new Logger()).WriteWarning("StreamSeek:UNKNOWN:" + whence);
return(-1);
}
try
{
lock (_cStream)
{
_cStream.Seek(offset, eSeekOrigin);
return(_cStream.Position);
}
}
catch (Exception ex)
{
(new Logger()).WriteError(ex);
(new Logger()).WriteNotice(eSeekOrigin + ":" + offset + ":" + whence);
}
return(-1);
}
public long Seek(long offset, System.IO.SeekOrigin origin)
{
//TODO: implement seek
return(0L);
}
/// <inheritdoc/>
public override long Seek(long offset, SeekOrigin origin)
{
long result = base.Seek(offset, origin);
_progress.Report(result);
return result;
}
/// <inheritdoc/>
public override long Seek(long offset, SeekOrigin origin)
{
return _underlyingStream.Seek(offset, origin);
}
public virtual long Seek(int offset, System.IO.SeekOrigin origin)
{
throw null;
}
/// <summary>
/// 未实现。
/// </summary>
/// <param name="offset"></param>
/// <param name="origin"></param>
/// <returns></returns>
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
Symbol.CommonException.ThrowNotImplemented();
return(-1L);
}
internal unsafe static long SetFilePointer(SafeFileHandle handle, long offset, System.IO.SeekOrigin origin, out int hr)
{
hr = 0;
int lo = (int)offset;
int hi = (int)(offset >> 32);
lo = SetFilePointerWin32(handle, lo, &hi, (int)origin);
if (lo == -1 && ((hr = Marshal.GetLastWin32Error()) != 0))
{
return(-1);
}
return((long)(((ulong)((uint)hi)) << 32) | ((uint)lo));
}
public override System.Int64 Seek(System.Int64 offset, System.IO.SeekOrigin origin)
{
throw new NotImplementedException();
//_outStream.Seek(offset, origin);
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
throw ADP.NotSupported();
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
throw new System.InvalidOperationException("Stream is not seekable.");
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
_lastAccess = new StackTrace(true).GetFrame(1);
return(base.Seek(offset, origin));
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
return(innerStream.Seek(offset, origin));
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
return(_s.Seek(offset, origin));
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
throw new NotSupportedException("The TraceStream class is not seekable.");
}
public void Seek(System.IO.SeekOrigin origin, long offset)
{
}
public virtual long Seek(int offset, System.IO.SeekOrigin origin)
{
return(default(long));
}
public Int64 Seek(Int64 offset, System.IO.SeekOrigin origin)
{
return(default(Int64));
}
public virtual long Seek(long offset, System.IO.SeekOrigin origin)
{
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
return(InternalFileStream.Seek(offset, origin));
}
public override long Seek(long offset, System.IO.SeekOrigin origin)
{
throw new NotSupportedException();
}
public override long Seek(long offset, System.IO.SeekOrigin origin) => throw null;
public override long Seek(long offset, System.IO.SeekOrigin loc)
{
throw null;
}
public static TransparentStreamSeekRequestMessage Deserialize(byte[] buffer)
{
if (buffer == null)
throw new ArgumentNullException ("buffer");
Guid id;
Guid streamID;
long offset;
System.IO.SeekOrigin seekOrigin;
using (System.IO.MemoryStream MS = new System.IO.MemoryStream (buffer)) {
using (System.IO.BinaryReader BR = new System.IO.BinaryReader (MS)) {
id = new Guid (BR.ReadBytes (16));
streamID = new Guid (BR.ReadBytes (16));
offset = BR.ReadInt64 ();
seekOrigin = (System.IO.SeekOrigin)BR.ReadInt32 ();
}
}
return new TransparentStreamSeekRequestMessage (id, streamID, offset, seekOrigin);
}
