public void Dispose()
{
if (UnderlyingStream != null)
{
UnderlyingStream.Dispose();
UnderlyingStream = null;
}
}
protected void TryDisposeUnderlyingStream()
{
try
{
UnderlyingStream?.Dispose();
}
catch (Exception)
{
// Well, at least we tried
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (UnderlyingStream != null)
{
UnderlyingStream.Dispose();
UnderlyingStream = null;
}
}
}
/// <summary>
/// Loads the bitmap from stream, processes, and renders, sending the result Bitmap to the 'consumer' callback for encoding or usage.
/// </summary>
/// <param name="s"></param>
/// <param name="consumer"></param>
/// <param name="options"></param>
protected void Build(Stream s, BitmapConsumer consumer, JobOptions options)
{
var leaveSourceStreamOpen = ((options & JobOptions.LeaveSourceStreamOpen) != 0 ||
(options & JobOptions.RewindSourceStream) != 0);
var bufferSource = ((options & JobOptions.BufferEntireSourceStream) != 0);
var originalPosition = ((options & JobOptions.RewindSourceStream) != 0) ? s.Position : -1;
var preserveTemp = ((options & JobOptions.PreserveTargetBitmap) != 0);
try
{
try
{
//Buffer source stream if requested
UnderlyingStream = bufferSource ? StreamUtils.CopyToMemoryStream(s, false, 0x1000) : s;
//Allow early disposal (enables same-file edits)
if (bufferSource && !leaveSourceStreamOpen)
{
s.Dispose();
s = null;
}
//Load bitmap
Source = new Bitmap(UnderlyingStream, !IgnoreIccProfile);
//Use size
OriginalSize = Source.Size;
//Do math
Layout();
//Render to 'Dest'
Render();
}
finally
{
try
{
//Dispose loaded bitmap instance
if (Source != null)
{
Source.Dispose();
}
}
finally
{
Source = null; //Ensure reference is null
try
{
//Dispose buffer
if (UnderlyingStream != null && s != UnderlyingStream)
{
UnderlyingStream.Dispose();
}
}
finally
{
UnderlyingStream = null; //Ensure reference is null
//Dispose source stream or restore its position
if (!leaveSourceStreamOpen && s != null)
{
s.Dispose();
}
else if (originalPosition > -1 && s != null && s.CanSeek)
{
s.Position = originalPosition;
}
}
}
}
//Fire callback to write to disk or use Bitmap instance directly
consumer(Dest, options);
}
finally
{
//Temporary bitmap must be disposed
if (!preserveTemp && Dest != null)
{
Dest.Dispose();
Dest = null;
}
}
}