private static void DestroyStream(ref IntPtr stream)
{
if (stream != IntPtr.Zero)
{
Util.Assert(Edsdk.EdsRelease(stream), "Failed to release stream");
stream = IntPtr.Zero;
}
}
protected internal override void DisposeUnmanaged()
{
if (_handle != IntPtr.Zero)
{
Edsdk.EdsRelease(_handle);
}
base.DisposeUnmanaged();
}
protected internal override void DisposeUnmanaged()
{
if (_cameraList != IntPtr.Zero)
{
Edsdk.EdsRelease(_cameraList);
}
base.DisposeUnmanaged();
}
private bool DownloadEvf()
{
// Do not download if pauseUpdate requested
if (_pauseLiveViewRequested)
{
return(true);
}
if ((this.LiveViewDevice & EosLiveViewDevice.Host) == EosLiveViewDevice.None || _cancelLiveViewRequested)
{
return(false);
}
lock (_locker)
{
var memoryStream = IntPtr.Zero;
try
{
Util.Assert(Edsdk.EdsCreateMemoryStream(0, out memoryStream), "Failed to create memory stream.");
using (var image = EosLiveImage.CreateFromStream(memoryStream))
{
Util.Assert(Edsdk.EdsDownloadEvfImage(this.Handle, image.Handle),
"Failed to download evf image.");
var converter = new EosConverter();
this.OnLiveViewUpdate(
new EosLiveImageEventArgs(converter.ConvertImageStreamToBytes(memoryStream))
{
Zoom = image.Zoom,
ZommBounds = image.ZoomBounds,
ImagePosition = image.ImagePosition,
ImageSize = image.Size
//Histogram = image.Histogram,
});
}
}
catch (EosException eosEx)
{
//if (eosEx.EosErrorCode != EosErrorCode.DeviceBusy && eosEx.EosErrorCode != EosErrorCode.ObjectNotReady)
// throw;
}
finally
{
if (memoryStream != IntPtr.Zero)
{
Edsdk.EdsRelease(memoryStream);
}
}
}
return(true);
}
public bool DownloadEvfInternal()
{
var memoryStream = IntPtr.Zero;
try
{
Edsdk.EdsCreateMemoryStream(0, out memoryStream);
using (var image = EosLiveImage.CreateFromStream(memoryStream))
{
Edsdk.EdsDownloadEvfImage(this.Handle, image.Handle);
var converter = new EosConverter();
this.OnLiveViewUpdate(
new EosLiveImageEventArgs(converter.ConvertImageStreamToBytes(memoryStream))
{
Zoom = image.Zoom,
ZommBounds = image.ZoomBounds,
ImagePosition = image.ImagePosition,
ImageSize = image.Size,
//Histogram = image.Histogram,
});
}
}
catch (EosException eosEx)
{
//if (eosEx.EosErrorCode != EosErrorCode.DeviceBusy && eosEx.EosErrorCode != EosErrorCode.ObjectNotReady)
// throw;
}
finally
{
if (memoryStream != IntPtr.Zero)
{
Edsdk.EdsRelease(memoryStream);
}
}
return(true);
}
private uint HandleObjectEvent(uint objectEvent, IntPtr sender, IntPtr context)
{
try
{
EosFramework.LogInstance.Debug("HandleObjectEvent fired: " + objectEvent);
Console.WriteLine("Canon event {0}", objectEvent);
switch (objectEvent)
{
case Edsdk.ObjectEvent_VolumeInfoChanged:
this.OnObjectEventVolumeInfoChanged(sender);
break;
case Edsdk.ObjectEvent_VolumeUpdateItems:
this.OnObjectEventVolumeUpdateItems(sender, context);
break;
case Edsdk.ObjectEvent_FolderUpdateItems:
this.OnObjectEventFolderUpdateItems(sender, context);
break;
case Edsdk.ObjectEvent_DirItemCreated:
this.OnObjectEventDirItemCreated(sender, context);
break;
case Edsdk.ObjectEvent_DirItemRemoved:
this.OnObjectEventDirItemRemoved(sender, context);
break;
case Edsdk.ObjectEvent_DirItemInfoChanged:
this.OnObjectEventDirItemInfoChanged(sender, context);
break;
case Edsdk.ObjectEvent_DirItemContentChanged:
this.OnObjectEventDirItemContentChanged(sender, context);
break;
case Edsdk.ObjectEvent_DirItemRequestTransfer:
this.OnObjectEventDirItemRequestTransfer(sender);
break;
case Edsdk.ObjectEvent_DirItemRequestTransferDT:
this.OnObjectEventDirItemRequestTransferDt(sender, context);
break;
case Edsdk.ObjectEvent_DirItemCancelTransferDT:
this.OnObjectEventDirItemCancelTransferDt(sender, context);
break;
case Edsdk.ObjectEvent_VolumeAdded:
this.OnObjectEventVolumeAdded(sender, context);
break;
case Edsdk.ObjectEvent_VolumeRemoved:
this.OnObjectEventVolumeRemoved(sender, context);
break;
}
}
catch (Exception ex)
{
EosFramework.LogInstance.Error("Handing HandleObjectEvent: {0}", ex);
}
finally
{
Edsdk.EdsRelease(sender);
}
return(Edsdk.EDS_ERR_OK);
}
