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);
}
