protected void TransferPictures()
{
if (DataSource.SourceId.Id == 0)
{
return;
}
var pendingTransfer = new PendingXfers();
TwainResult result;
try
{
do
{
pendingTransfer.Count = 0;
var hbitmap = IntPtr.Zero;
// Get the image info
var imageInfo = new ImageInfo();
result = Twain32Native.DsImageInfo(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageInfo,
Message.Get,
imageInfo);
_log.Debug(string.Format("Get(ImageInfo), result: {0}", result));
if (result != TwainResult.Success)
{
CloseDataSource();
break;
}
// Transfer the image from the device
result = Twain32Native.DsImageTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageNativeXfer,
Message.Get,
ref hbitmap);
_log.Debug(string.Format("Get(ImageNativeXfer), result: {0}", result));
if (result != TwainResult.XferDone)
{
_log.ErrorFormat("Transfer the image from the device failed. Result: {0}", result);
CloseDataSource();
break;
}
DataSource.SourceState = TwainState.Transfering;
// End pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.EndXfer,
pendingTransfer);
_log.Debug(string.Format("EndXfer(PendingXfers), result: {0}", result));
if (result != TwainResult.Success)
{
CloseDataSource();
break;
}
DataSource.SourceState = TwainState.TransferReady;
if (hbitmap == IntPtr.Zero)
{
_log.Warn("Transfer complete but bitmap pointer is still null.");
}
else
{
using (var renderer = new BitmapRenderer(hbitmap))
{
TransferImageEventArgs args = new TransferImageEventArgs(renderer.RenderToBitmap(),
pendingTransfer.Count != 0);
TransferImage(this, args);
if (!args.ContinueScanning)
break;
}
}
} while (pendingTransfer.Count != 0);
}
catch (Exception e)
{
}
finally
{
// Reset any pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.Reset,
pendingTransfer);
if (result == TwainResult.Success)
{
_twainState = TwainState.SourceEnabled;
_log.Debug(string.Format("Reset(PendingXfers), result: {0}", result));
}
else
{
var conditionCode = GetConditionCode(ApplicationId, DataSource.SourceId);
_log.ErrorFormat("Reset(PendingXfers), result: {0}, condition code: {1}", result, conditionCode);
}
}
}
protected void TransferPictures()
{
if (DataSource.SourceId.Id == 0)
{
return;
}
PendingXfers pendingTransfer = new PendingXfers();
TwainResult result;
try
{
do
{
pendingTransfer.Count = 0;
IntPtr hbitmap = IntPtr.Zero;
// Get the image info
ImageInfo imageInfo = new ImageInfo();
result = Twain32Native.DsImageInfo(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageInfo,
Message.Get,
imageInfo);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
// Transfer the image from the device
result = Twain32Native.DsImageTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageNativeXfer,
Message.Get,
ref hbitmap);
if (result != TwainResult.XferDone)
{
DataSource.Close();
break;
}
// End pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.EndXfer,
pendingTransfer);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
if (hbitmap == IntPtr.Zero)
{
log.Warn("Transfer complete but bitmap pointer is still null.");
}
else
{
using (var renderer = new BitmapRenderer(hbitmap))
{
TransferImageEventArgs args = new TransferImageEventArgs(renderer.RenderToBitmap(), pendingTransfer.Count, this._extTag);
TransferImage(this, args);
if (!args.ContinueScanning)
{
break;
}
}
}
}while (pendingTransfer.Count != 0);
}
finally
{
// Reset any pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.Reset,
pendingTransfer);
}
}
protected void TransferPictures()
{
if (DataSource.SourceId.Id == 0)
{
return;
}
PendingXfers pendingTransfer = new PendingXfers();
TwainResult result;
try
{
do
{
pendingTransfer.Count = 0;
IntPtr hbitmap = IntPtr.Zero;
// Get the image info
ImageInfo imageInfo = new ImageInfo();
result = Twain32Native.DsImageInfo(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageInfo,
Message.Get,
imageInfo);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
// Transfer the image from the device
result = Twain32Native.DsImageTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageNativeXfer,
Message.Get,
ref hbitmap);
if (result != TwainResult.XferDone)
{
DataSource.Close();
break;
}
// End pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.EndXfer,
pendingTransfer);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
if (hbitmap != IntPtr.Zero)
{
using (var renderer = new BitmapRenderer(hbitmap))
{
TransferImageEventArgs args = new TransferImageEventArgs(renderer.RenderToBitmap(), pendingTransfer.Count != 0);
TransferImage(this, args);
if (!args.ContinueScanning)
break;
}
}
}
while (pendingTransfer.Count != 0);
}
finally
{
// Reset any pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.Reset,
pendingTransfer);
}
}
protected void TransferPictures()
{
// see http://www.twain.org/wp-content/uploads/2017/03/TWAIN-2.4-Specification.pdf
// page (3-20)
if (DataSource.SourceId.Id == 0)
{
return;
}
PendingXfers pendingTransfer = new PendingXfers();
TwainResult result;
try
{
do
{
pendingTransfer.Count = 0; // the Twain source will fill this in during DsPendingTransfer
IntPtr hbitmap = IntPtr.Zero;
// Get the image info
ImageInfo imageInfo = new ImageInfo();
result = Twain32Native.DsImageInfo(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageInfo,
Message.Get,
imageInfo);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
Bitmap bitmap;
try {
// Transfer the image from the device
result = Twain32Native.DsImageTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageNativeXfer,
Message.Get,
ref hbitmap);
if (result != TwainResult.XferDone)
{
DataSource.Close();
break;
}
if (hbitmap == IntPtr.Zero)
{
throw new TwainException("Transfer complete, but bitmap pointer is still null.");
}
bitmap = BitmapRenderer.NewBitmapFromHBitmap(hbitmap);
} finally {
if (hbitmap != IntPtr.Zero)
{
Kernel32Native.GlobalFree(hbitmap);
hbitmap = IntPtr.Zero;
}
}
// End pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.EndXfer,
pendingTransfer);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
// fire the transfer event...
TransferImageEventArgs args = new TransferImageEventArgs(bitmap, pendingTransfer.Count != 0, 1.0f);
TransferImage(this, args);
if (!args.ContinueScanning)
{
break;
}
}while (pendingTransfer.Count != 0);
}
finally
{
// Reset any pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.Reset,
pendingTransfer);
}
}
protected void TransferPicturesIncremental()
{
// see http://www.twain.org/wp-content/uploads/2017/03/TWAIN-2.4-Specification.pdf
// page 4-20
Console.WriteLine("TransferPicturesIncremental...");
Logger.WriteLog(LOG_LEVEL.LL_NORMAL_LOG, "TransferPicturesIncremental...");
if (DataSource.SourceId.Id == 0)
{
return;
}
PendingXfers pendingTransfer = new PendingXfers();
TwainResult result;
try
{
int recievedBlockCount = 1;
do
{
pendingTransfer.Count = 0; // the Twain source will fill this in during DsPendingTransfer
Console.WriteLine("Get the image info...");
// Get the image info
ImageInfo imageInfo = new ImageInfo();
result = Twain32Native.DsImageInfo(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageInfo,
Message.Get,
imageInfo);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
/*Console.WriteLine("Get the image layout...");
* ImageLayout imageLayout = new ImageLayout();
* result = Twain32Native.DsImageLayout(
* ApplicationId,
* DataSource.SourceId,
* DataGroup.Image,
* DataArgumentType.ImageLayout,
* Message.GetCurrent,
* imageLayout);
*
* if (result != TwainResult.Success)
* {
* DataSource.Close();
* break;
* }*/
// Setup Destination Bitmap
Bitmap bitmap = BitmapRenderer.NewBitmapForImageInfo(imageInfo);
Console.WriteLine("Setup incremental Memory XFer...");
// Setup incremental Memory XFer
SetupMemXfer setupMemXfer = new SetupMemXfer();
result = Twain32Native.DsSetupMemXfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.SetupMemXfer,
Message.Get,
setupMemXfer
);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
Console.WriteLine("allocate the preferred buffer size...");
// allocate the preferred buffer size
// see twain spec pdf, page 4-21
ImageMemXfer imageMemXfer = new ImageMemXfer();
try
{
imageMemXfer.Memory.Flags = MemoryFlags.AppOwns | MemoryFlags.Pointer;
imageMemXfer.Memory.Length = setupMemXfer.MinBufSize; // 對於A8 scanner，Preferred = MaxBufSize，太大了，所以我們選小一點的
imageMemXfer.Memory.TheMem = Kernel32Native.GlobalAlloc(GlobalAllocFlags.MemFixed, (int)setupMemXfer.MinBufSize * 2); // 不知道為什麼原本她size寫要*2倍
imageMemXfer.Compression = Compression.None;
if (imageMemXfer.Memory.TheMem == IntPtr.Zero)
{
Logger.WriteLog(LOG_LEVEL.LL_SERIOUS_ERROR, "error allocating buffer for memory transfer");
throw new TwainException("error allocating buffer for memory transfer");
}
long pixels_written = 0;
long total_pixels = imageInfo.ImageWidth * imageInfo.ImageLength;
do
{
// perform a transfer
result = Twain32Native.DsImageMemXfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageMemXfer,
Message.Get,
imageMemXfer
);
//string savePath = @"C:\Users\Tenny\Pictures\TwainTest\tempBitmap_";
//savePath += i.ToString() + @".bmp";
if (result == TwainResult.Success || result == TwainResult.XferDone)
{
// dibArray是這次Buffer的RGB陣列
byte[] dibArray = ShiftPixels(ref imageMemXfer, imageInfo.BitsPerPixel / 8);
BitmapRenderer.TransferPixels(bitmap, imageInfo, imageMemXfer);
pixels_written += (imageMemXfer.BytesWritten * 8) / imageInfo.BitsPerPixel;
double percent_complete = (double)pixels_written / (double)total_pixels;
if (result == TwainResult.XferDone)
{
percent_complete = 1.0;
// 算出空白區域的高度，裁切尾端部分
int blankHeight = GetCropHeight(bitmap);
if (blankHeight > 0 && blankHeight < imageInfo.ImageLength)
{
bitmap = cropImage(bitmap, blankHeight);
}
}
// fire the transfer event
TransferImageEventArgs args = new TransferImageEventArgs(bitmap, result != TwainResult.XferDone, (float)percent_complete);
TransferImage(this, args);
if (!args.ContinueScanning)
{
result = TwainResult.XferDone;
}
}
recievedBlockCount++;
} while (result == TwainResult.Success);
}
finally
{
if (imageMemXfer.Memory.TheMem != IntPtr.Zero)
{
Kernel32Native.GlobalFree(imageMemXfer.Memory.TheMem);
imageMemXfer.Memory.TheMem = IntPtr.Zero;
}
}
// End pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.EndXfer,
pendingTransfer);
if (result != TwainResult.Success)
{
DataSource.Close();
break;
}
}while (pendingTransfer.Count != 0);
}
finally
{
// Reset any pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.Reset,
pendingTransfer);
Logger.WriteLog(LOG_LEVEL.LL_NORMAL_LOG, "TransferPicturesIncremental...done.");
}
}
void TransferImage(object sender, TransferImageEventArgs e)
{
if (e.Image != null)
{
if (this.scanTarget == ScanTarget.APP)
{
int x = Properties.Settings.Default.x;
int y = Properties.Settings.Default.y;
int w = Properties.Settings.Default.w;
int h = Properties.Settings.Default.h;
Rectangle r = MainForm.getRectangle(e.Image, x, y, w, h);
if (!r.IsEmpty)
{
this.pictureBox.Image = e.Image.Clone(MainForm.getRectangle(e.Image, x, y, w, h), e.Image.PixelFormat);
}
else
{
this.pictureBox.Image = e.Image;
}
}
else if (this.scanTarget == ScanTarget.WEB)
{
this.scanData.Add(e.Image);
}
}
}
void _twain_TransferImage(object sender, TransferImageEventArgs e)
{
if (e.Image != null)
{
_image = e.Image;
}
}
private void TwainTransferImage(object sender, TransferImageEventArgs e)
{
if (MainScanImage == null) throw new ApplicationException("Není nastavený objekt pro ulození naskenovného obrázku.");
try
{
if (e.Image != null)
{
if (Settings.Default.ScannerSaveToFile)
{
Logger.Log(String.Format("TwainTransferImage-FILE"));
//System.Drawing.Bitmap bmp = BitmapFunctions.AutoColorCorrections(e.Image);
//Logger.Log(String.Format("TwainTransferImage-AutoColorCorrections"));
e.Image.Save(System.IO.Path.Combine(Settings.Default.ScanFolderPath, TWAIN_SCAN_FILENAME), System.Drawing.Imaging.ImageFormat.Bmp);
}
else
{
Logger.Log(String.Format("TwainTransferImage-MEMORY"));
IntPtr hbitmap = new System.Drawing.Bitmap(e.Image).GetHbitmap();
Logger.Log(String.Format("TwainTransferImage-GetHbitmap"));
ScanBitmapSource = Imaging.CreateBitmapSourceFromHBitmap(hbitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
Logger.Log(String.Format("TwainTransferImage-CreateBitmapSource"));
Gdi32Native.DeleteObject(hbitmap);
}
}
else
{
string message = "Nepodařilo se naskenovat obrázek.";
MessageBox.Show(message, "TwainTransferImage", MessageBoxButton.OK, MessageBoxImage.Exclamation);
Logger.Log(String.Format("ERROR: {0}", message));
}
}
catch (TwainException tx)
{
string message = String.Format("{0}\nConditionCode={1}\nReturnCode={2}.", tx.Message, tx.ConditionCode, tx.ReturnCode);
MessageBox.Show(message, tx.Source, MessageBoxButton.OK, MessageBoxImage.Error);
Logger.Log(String.Format("TWAIN: {0}", message));
SetMenuButtonsEnabled();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.Source, MessageBoxButton.OK, MessageBoxImage.Error);
Logger.Log(String.Format("ERROR: {0}", ex.Message));
SetMenuButtonsEnabled();
}
finally
{
GetAvailableMemory();
Logger.Log("TwainTransferImage-Finally");
}
}
protected void TransferPictures()
{
if (DataSource.SourceId.Id == 0)
{
return;
}
var pendingTransfer = new PendingXfers();
TwainResult result;
try
{
do
{
pendingTransfer.Count = 0;
var hbitmap = IntPtr.Zero;
// Get the image info
var imageInfo = new ImageInfo();
result = Twain32Native.DsImageInfo(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageInfo,
Message.Get,
imageInfo);
_log.Debug(string.Format("Get(ImageInfo), result: {0}", result));
if (result != TwainResult.Success)
{
CloseDataSource();
break;
}
// Transfer the image from the device
result = Twain32Native.DsImageTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Image,
DataArgumentType.ImageNativeXfer,
Message.Get,
ref hbitmap);
_log.Debug(string.Format("Get(ImageNativeXfer), result: {0}", result));
if (result != TwainResult.XferDone)
{
_log.ErrorFormat("Transfer the image from the device failed. Result: {0}", result);
CloseDataSource();
break;
}
DataSource.SourceState = TwainState.Transfering;
// End pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.EndXfer,
pendingTransfer);
_log.Debug(string.Format("EndXfer(PendingXfers), result: {0}", result));
if (result != TwainResult.Success)
{
CloseDataSource();
break;
}
DataSource.SourceState = TwainState.TransferReady;
if (hbitmap == IntPtr.Zero)
{
_log.Warn("Transfer complete but bitmap pointer is still null.");
}
else
{
using (var renderer = new BitmapRenderer(hbitmap))
{
TransferImageEventArgs args = new TransferImageEventArgs(renderer.RenderToBitmap(),
pendingTransfer.Count != 0);
TransferImage(this, args);
if (!args.ContinueScanning)
{
break;
}
}
}
} while (pendingTransfer.Count != 0);
}
catch (Exception e)
{
}
finally
{
// Reset any pending transfers
result = Twain32Native.DsPendingTransfer(
ApplicationId,
DataSource.SourceId,
DataGroup.Control,
DataArgumentType.PendingXfers,
Message.Reset,
pendingTransfer);
if (result == TwainResult.Success)
{
_twainState = TwainState.SourceEnabled;
_log.Debug(string.Format("Reset(PendingXfers), result: {0}", result));
}
else
{
var conditionCode = GetConditionCode(ApplicationId, DataSource.SourceId);
_log.ErrorFormat("Reset(PendingXfers), result: {0}, condition code: {1}", result, conditionCode);
}
}
}
private void Twain_TransferImage(object sender, TransferImageEventArgs e)
{
if (e.Image != null)
{
Log("Image transfered");
var img = e.Image;
if (_images == null) _images = new List<Image>();
_images.Add((Image)img.Clone());
img.Dispose();
}
}
/// <summary>
/// FrontTwainTransferImage is the delegate to send the front-side scanned image to the form control 'imgVwrFront'
/// </summary>
/// <param name="sender">Object</param>
/// <param name="e">TransferImageEventArgs</param>
void FrontTwainTransferImage(Object sender, TransferImageEventArgs e)
{
if (e.Image != null)
this.imgVwrFront.EditableImage = e.Image;
}
/// <summary>
/// BackTwain_TransferImage is the delegate to send the back-side scanned image to the form control 'imgVwrBack'
/// </summary>
/// <param name="sender">Object</param>
/// <param name="e">TransferImageEventArgs</param>
void BackTwain_TransferImage(Object sender, TransferImageEventArgs e)
{
if (e.Image != null)
this.imgVwrBack.EditableImage = e.Image;
}
