/// <summary>
/// Gets the property pointer.
/// </summary>
/// <param name="propertyId">The property id.</param>
/// <param name="bufferSize">Size of the buffer.</param>
/// <param name="additionalInformation">Additional information of property.
/// We use this parameter in order to specify an index.</param>
/// <returns>pointer to the property value buffer</returns>
/// <remarks></remarks>
private IntPtr GetProperty(PropertyId propertyId, int bufferSize, int additionalInformation = 0)
{
IntPtr allocatedBufferPointer = Marshal.AllocHGlobal(bufferSize);
try
{
UInt32 returnValue = EDSDKInvokes.GetPropertyData(this.Handle, (UInt32)propertyId, additionalInformation, bufferSize, allocatedBufferPointer);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
}
// If Caught any exception during the native call
catch
{
// If buffer was allocated
if (allocatedBufferPointer != IntPtr.Zero)
{
// Release him
Marshal.FreeHGlobal(allocatedBufferPointer);
allocatedBufferPointer = IntPtr.Zero;
}
// Eventually, throw the caught exception
throw;
}
// Return the allocated buffer
return(allocatedBufferPointer);
}
private void RegisterEventHandlers()
{
// Register OBJECT events
m_edsObjectEventHandler = new EDSDKInvokes.EdsObjectEventHandler(objectEventHandler);
uint result = EDSDKInvokes.SetObjectEventHandler(
this.Handle,
(uint)ObjectEvent.All,
m_edsObjectEventHandler,
IntPtr.Zero);
ReturnValueManager.HandleFunctionReturnValue(result);
}
/// <summary>
/// </summary>
/// <param name="propertyId">The property id.</param>
/// <returns>property values</returns>
/// <remarks></remarks>
protected IEnumerable <UInt32> GetSupportedProperties(PropertyId propertyId)
{
PropertyDescription propertyDescription;
UInt32 returnValue = EDSDKInvokes.GetPropertyDescription(this.Handle, (UInt32)propertyId, out propertyDescription);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
for (int i = 0; i < propertyDescription.Elements.Length; i++)
{
yield return((UInt32)propertyDescription.Elements[i]);
}
}
/// <summary>
/// </summary>
/// <param name="propertyId">The property id.</param>
/// <returns>property values</returns>
/// <remarks></remarks>
protected IEnumerable <UInt32> GetSupportedProperties(PropertyId propertyId)
{
EDSDK.EdsPropertyDesc propertyDescription;
UInt32 returnValue = EDSDK.EdsGetPropertyDesc(this.Handle, (UInt32)propertyId, out propertyDescription);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
for (int i = 0; i < propertyDescription.PropDesc.Length; i++)
{
yield return((UInt32)propertyDescription.PropDesc[i]);
}
}
public Stream GetLiveViewImage()
{
IntPtr streamPointer = IntPtr.Zero;
IntPtr imagePointer = IntPtr.Zero;
UInt32 returnValue = EDSDKInvokes.CreateMemoryStream(0, out streamPointer);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
try
{
returnValue = EDSDKInvokes.CreateEvfImageRef(streamPointer, out imagePointer);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
try
{
returnValue = EDSDKInvokes.DownloadEvfImage(this.Handle, imagePointer);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
IntPtr imageBlob;
returnValue = EDSDKInvokes.GetPointer(streamPointer, out imageBlob);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
try
{
uint imageBlobLength;
returnValue = EDSDKInvokes.GetLength(streamPointer, out imageBlobLength);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
byte[] buffer = new byte[imageBlobLength];
Marshal.Copy(imageBlob, buffer, 0, (int)imageBlobLength);
Stream stream = new MemoryStream(buffer);
return(stream);
}
finally
{
EDSDKInvokes.Release(imageBlob);
}
}
finally
{
EDSDKInvokes.Release(imagePointer);
}
}
finally
{
EDSDKInvokes.Release(streamPointer);
}
}
/// <summary>
/// Download image to disk.
/// </summary>
/// <param name="dirRef">A reference to objects created by the event</param>
private void DownloadImage(IntPtr dirRef)
{
IntPtr stream = IntPtr.Zero;
IntPtr data = IntPtr.Zero;
DirectoryItemInformation dirItemInfo;
try
{
UInt32 returnValue = EDSDKInvokes.GetDirectoryItemInformation(dirRef, out dirItemInfo);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
string fullpath = String.Empty;
if (!String.IsNullOrEmpty(ImageSaveDirectory))
{
fullpath = System.IO.Path.Combine(ImageSaveDirectory, dirItemInfo.FileName);
}
else
{
fullpath = System.IO.Path.Combine(Environment.CurrentDirectory, dirItemInfo.FileName);
}
returnValue = EDSDKInvokes.CreateFileStream(fullpath, FileCreateDisposition.CreateAlways, Access.ReadWrite, out stream);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
returnValue = EDSDKInvokes.Download(dirRef, dirItemInfo.Size, stream);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
if (returnValue == (uint )ReturnValue.Ok)
{
returnValue = EDSDKInvokes.DownloadComplete(dirRef);
}
else
{
returnValue = EDSDKInvokes.DownloadCancel(dirRef);
}
returnValue = EDSDKInvokes.GetPointer(stream, out data);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
}
catch (Exception ex)
{
Console.Out.WriteLine(ex.Message);
}
finally
{
EDSDKInvokes.Release(stream);
EDSDKInvokes.Release(data);
}
}
public void ShutterPressed(int state)
{
UInt32 returnValue = EDSDKInvokes.SendCommand(this.Handle, (uint)CameraCommand.PressShutterButton, state);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
}
/// <summary>
/// Take a single photo
/// </summary>
public void TakePhoto()
{
UInt32 returnValue = EDSDKInvokes.SendCommand(this.Handle, (uint)CameraCommand.TakePicture, 0);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
}
/// <summary>
/// Closes the session.
/// </summary>
/// <remarks></remarks>
protected void CloseSession()
{
UInt32 returnValue = EDSDKInvokes.CloseSession(this.Handle);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
}
/// <summary>
/// Opens the session.
/// </summary>
/// <remarks></remarks>
protected void OpenSession()
{
UInt32 returnValue = EDSDK.EdsOpenSession(this.Handle);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
}
/// <summary>
/// Sets the property value.
/// </summary>
/// <param name="propertyId">The property id.</param>
/// <param name="propertySize">Size of the property.</param>
/// <param name="propertyValue">The property value.</param>
/// <param name="additionalInformation">The additional information.</param>
/// <remarks></remarks>
private void SetProperty(PropertyId propertyId, int propertySize, object propertyValue, int additionalInformation = 0)
{
UInt32 returnValue = EDSDKInvokes.SetPropertyData(this.Handle, (UInt32)propertyId, additionalInformation, propertySize, propertyValue);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
}
