private bool DownloadEvf()
{
if ((this.LiveViewDevice & EosLiveViewDevice.Host) == EosLiveViewDevice.None)
return false;
var memoryStream = IntPtr.Zero;
var evfImage = IntPtr.Zero;
try
{
this.Assert(Edsdk.EdsCreateMemoryStream(0, out memoryStream), "Failed to create memory stream.");
this.Assert(Edsdk.EdsCreateEvfImageRefCdecl(memoryStream, out evfImage), "Failed to create evf image.");
this.Assert(Edsdk.EdsDownloadEvfImageCdecl(this.Handle, evfImage), "Failed to download evf image.");
var converter = new EosConverter();
this.OnLiveViewUpdate(new EosMemoryImageEventArgs(converter.ConvertImageStreamToBytes(memoryStream)));
}
catch (EosException eosEx)
{
if (eosEx.EosErrorCode != EosErrorCode.DeviceBusy && eosEx.EosErrorCode != EosErrorCode.ObjectNotReady)
throw;
}
finally
{
if (evfImage != IntPtr.Zero)
Edsdk.EdsRelease(evfImage);
if (memoryStream != IntPtr.Zero)
Edsdk.EdsRelease(memoryStream);
}
return true;
}
public EosImageEventArgs TransportInMemory(IntPtr directoryItem)
{
var directoryItemInfo = GetDirectoryItemInfo(directoryItem);
var stream = CreateMemoryStream(directoryItemInfo.Size);
try
{
Transport(directoryItem, directoryItemInfo.Size, stream, false);
var converter = new EosConverter();
return new EosMemoryImageEventArgs(converter.ConvertImageStreamToBytes(stream)){FileName = directoryItemInfo.szFileName};
}
finally
{
DestroyStream(ref stream);
}
}
public EosImageEventArgs TransportInMemory(IntPtr directoryItem)
{
var directoryItemInfo = GetDirectoryItemInfo(directoryItem);
var stream = CreateMemoryStream(directoryItemInfo.Size);
try
{
Transport(directoryItem, directoryItemInfo.Size, stream, false);
var converter = new EosConverter();
return(new EosMemoryImageEventArgs(converter.ConvertImageStreamToBytes(stream)));
}
finally
{
DestroyStream(ref stream);
}
}
public EosMemoryImageEventArgs TransportInMemory(IntPtr directoryItem, IntPtr context)
{
var directoryItemInfo = GetDirectoryItemInfo(directoryItem);
var stream = CreateMemoryStream(directoryItemInfo.Size);
try
{
Edsdk.EdsSetProgressCallback(stream, progress, Edsdk.EdsProgressOption.Periodically, context);
Transport(directoryItem, directoryItemInfo.Size, stream, false);
var converter = new EosConverter();
return new EosMemoryImageEventArgs(converter.ConvertImageStreamToBytes(stream)){FileName = directoryItemInfo.szFileName};
}
finally
{
DestroyStream(ref stream);
}
}
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 EosMemoryImageEventArgs TransportInMemory(IntPtr directoryItem, IntPtr context)
{
var directoryItemInfo = GetDirectoryItemInfo(directoryItem);
var stream = CreateMemoryStream(directoryItemInfo.Size);
try
{
//Edsdk.EdsSetProgressCallback(stream, progress, Edsdk.EdsProgressOption.Periodically, context);
Transport(directoryItem, directoryItemInfo.Size, stream, false);
var converter = new EosConverter();
return(new EosMemoryImageEventArgs(converter.ConvertImageStreamToBytes(stream))
{
FileName = directoryItemInfo.szFileName
});
}
finally
{
DestroyStream(ref stream);
}
}
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;
}
