public void DownloadLiveViewImage(Action <MemoryStream, uint> onImageRecieved)
{
IntPtr stream = IntPtr.Zero;
IntPtr image = IntPtr.Zero;
IntPtr pointer = IntPtr.Zero;
uint size = 0;
try
{
SDKHelper.CheckError(EDSDK.EdsCreateMemoryStream(BUFFER_SIZE, out stream));
SDKHelper.CheckError(EDSDK.EdsCreateEvfImageRef(stream, out image));
SDKHelper.CheckError(EDSDK.EdsDownloadEvfImage(_pointer, image));
SDKHelper.CheckError(EDSDK.EdsGetPointer(stream, out pointer));
SDKHelper.CheckError(EDSDK.EdsGetLength(stream, out size));
onImageRecieved(CopyToMemoryStream(pointer, size), size);
SDKHelper.CheckError(EDSDK.EdsRelease(image));
SDKHelper.CheckError(EDSDK.EdsRelease(stream));
}
catch (SDKComeBackLaterException)
{
}
}
public unsafe static Bitmap DownloadEvf(IntPtr Camera)
{
uint success;
Bitmap _bmp, _newbmp;
UnmanagedMemoryStream ums;
// while (true)
{
IntPtr _stream = IntPtr.Zero;
IntPtr _image = new IntPtr();
IntPtr _imageData = new IntPtr();
uint _imageLen;
int _width = 500, _height = 330;
_newbmp = new Bitmap(_width, _height);
success = EDSDK.EdsCreateMemoryStream(0, out _stream);
if (success == EDSDK.EDS_ERR_OK)
{
success = EDSDK.EdsCreateEvfImageRef(_stream, out _image);
}
if (success == EDSDK.EDS_ERR_OK)
{
success = EDSDK.EdsDownloadEvfImage(Camera, _image);
}
if (success == EDSDK.EDS_ERR_OK)
{
EDSDK.EdsGetPointer(_stream, out _imageData);
EDSDK.EdsGetLength(_stream, out _imageLen);
ums = new UnmanagedMemoryStream((byte *)_imageData.ToPointer(), _imageLen, _imageLen, FileAccess.Read);
_bmp = new Bitmap(ums, true);
_newbmp = new Bitmap(_bmp, _width, _height);
//LiveViewBox是定义的一个pictureBox 控件
//LiveViewBox1.Image = _newbmp;
}
if (_stream != IntPtr.Zero)
{
EDSDK.EdsRelease(_stream);
_stream = IntPtr.Zero;
}
if (_image != IntPtr.Zero)
{
EDSDK.EdsRelease(_image);
_image = IntPtr.Zero;
}
}
return(_newbmp);
}
public unsafe static Bitmap DownloadPreview(IntPtr Camera)
{
uint success;
Bitmap _bmp, _newbmp;
UnmanagedMemoryStream ums;
//while (true)
{
IntPtr _stream = IntPtr.Zero;
IntPtr _image = new IntPtr();
IntPtr _imageData = new IntPtr();
uint _imageLen;
int _width = 1050, _height = 700;
_newbmp = new Bitmap(_width, _height);
success = EDSDK.EdsCreateMemoryStream(0, out _stream);
if (success == EDSDK.EDS_ERR_OK)
{
success = EDSDK.EdsCreateEvfImageRef(_stream, out _image);
}
if (success == EDSDK.EDS_ERR_OK)
{
success = EDSDK.EdsDownloadEvfImage(Camera, _image);
}
if (success == EDSDK.EDS_ERR_OK)
{
EDSDK.EdsGetPointer(_stream, out _imageData);
EDSDK.EdsGetLength(_stream, out _imageLen);
ums = new UnmanagedMemoryStream((byte *)_imageData.ToPointer(), _imageLen, _imageLen, FileAccess.Read);
_bmp = new Bitmap(ums, true);
_newbmp = new Bitmap(_bmp, _width, _height);
Console.WriteLine("bmp is download");
}
if (_stream != IntPtr.Zero)
{
EDSDK.EdsRelease(_stream);
_stream = IntPtr.Zero;
Console.WriteLine("relase stream");
}
if (_image != IntPtr.Zero)
{
EDSDK.EdsRelease(_image);
_image = IntPtr.Zero;
Console.WriteLine("relase image");
}
}
return(_newbmp);
}
public Stream GetLiveViewImage()
{
IntPtr streamPointer = IntPtr.Zero;
IntPtr imagePointer = IntPtr.Zero;
UInt32 returnValue = EDSDK.EdsCreateMemoryStream(0, out streamPointer);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
try
{
returnValue = EDSDK.EdsCreateEvfImageRef(streamPointer, out imagePointer);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
try
{
returnValue = EDSDK.EdsDownloadEvfImage(this.Handle, imagePointer);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
IntPtr imageBlob;
returnValue = EDSDK.EdsGetPointer(streamPointer, out imageBlob);
ReturnValueManager.HandleFunctionReturnValue(returnValue);
try
{
ulong imageBlobLength;
returnValue = EDSDK.EdsGetLength(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
{
EDSDK.EdsRelease(imageBlob);
}
}
finally
{
EDSDK.EdsRelease(imagePointer);
}
}
finally
{
EDSDK.EdsRelease(streamPointer);
}
}
public void updatePic()
{
EDSDK.EdsDownloadEvfImage(this.CameraPtr, this.EvfImgPtr);
IntPtr ptr;
EDSDK.EdsGetPointer(MemStreamPtr, out ptr);
uint len;
EDSDK.EdsGetLength(MemStreamPtr, out len);
Byte[] data = new Byte[len];
Marshal.Copy(ptr, data, 0, (int)len);
System.IO.MemoryStream memStream = new System.IO.MemoryStream(data);
bmp.BeginInit();
bmp.StreamSource = memStream;
bmp.EndInit();
memStream.Dispose();
EDSDK.EdsRelease(ptr);
}
