/// <summary>
/// Retrieves a feature from the device.
/// </summary>
/// <param name="device"></param>
/// <param name="code"></param>
/// <param name="datalen"></param>
/// <returns></returns>
/// <remarks></remarks>
public static HIDFeatureResult GetHIDFeature(IntPtr device, int code, int datalen = 16)
{
HIDFeatureResult GetHIDFeatureRet = default;
MemPtr mm = new MemPtr();
int i = code;
try
{
mm.AllocZero(datalen);
mm.ByteAt(0L) = (byte)i;
if (UsbLibHelpers.HidD_GetFeature(device, mm.Handle, (int)mm.Length))
{
GetHIDFeatureRet = new HIDFeatureResult(i, mm);
}
else
{
GetHIDFeatureRet = null;
}
mm.Free();
}
catch
{
mm.Free();
return(null);
}
return(GetHIDFeatureRet);
}
/// <summary>
/// Returns the raw byte data for a Hid feature code.
/// </summary>
/// <param name="featureCode">The Hid feature code to retrieve.</param>
/// <param name="result">Receives the result of the operation.</param>
/// <param name="expectedSize">The expected size, in bytes, of the result.</param>
/// <returns>True if successful.</returns>
/// <remarks></remarks>
public bool HidGetFeature(byte featureCode, ref byte[] result, int expectedSize)
{
bool HidGetFeatureRet = default;
var hfile = HidFeatures.OpenHid(this);
if (hfile == IntPtr.Zero)
{
return(false);
}
var mm = new MemPtr();
mm.Alloc(expectedSize + 1);
mm.ByteAt(0L) = featureCode;
if (!UsbLibHelpers.HidD_GetFeature(hfile, mm, expectedSize))
{
HidGetFeatureRet = false;
}
else
{
HidGetFeatureRet = true;
result = mm.ToByteArray(1L, expectedSize);
}
HidFeatures.CloseHid(hfile);
mm.Free();
return(HidGetFeatureRet);
}
/// <summary>
/// Returns the short value of a Hid feature code.
/// </summary>
/// <param name="featureCode">The Hid feature code to retrieve.</param>
/// <param name="result">Receives the result of the operation.</param>
/// <returns>True if successful.</returns>
/// <remarks></remarks>
public bool HidGetFeature(byte featureCode, ref short result)
{
bool HidGetFeatureRet = default;
var hfile = HidFeatures.OpenHid(this);
if (hfile == IntPtr.Zero)
{
return(false);
}
var mm = new MemPtr();
mm.Alloc(3L);
mm.ByteAt(0L) = featureCode;
if (!UsbLibHelpers.HidD_GetFeature(hfile, mm, 3))
{
HidGetFeatureRet = false;
}
else
{
HidGetFeatureRet = true;
result = mm.ShortAtAbsolute(1L);
}
mm.Free();
HidFeatures.CloseHid(hfile);
return(HidGetFeatureRet);
}
/// <summary>
/// Sets the long value of a Hid feature code.
/// </summary>
/// <param name="featureCode">The Hid feature code to set.</param>
/// <param name="value">The value to set.</param>
/// <returns></returns>
/// <remarks></remarks>
public bool HidSetFeature(byte featureCode, long value)
{
bool HidSetFeatureRet = default;
var hfile = HidFeatures.OpenHid(this);
if (hfile == IntPtr.Zero)
{
return(false);
}
var mm = new MemPtr();
mm.Alloc(9L);
mm.ByteAt(0L) = featureCode;
mm.LongAtAbsolute(1L) = value;
if (!UsbLibHelpers.HidD_SetFeature(hfile, mm, 9))
{
HidSetFeatureRet = false;
}
else
{
HidSetFeatureRet = true;
}
HidFeatures.CloseHid(hfile);
mm.Free();
return(HidSetFeatureRet);
}
/// <summary>
/// Sets the raw byte value of a Hid feature code.
/// </summary>
/// <param name="featureCode">The Hid feature code to set.</param>
/// <param name="value">The value to set.</param>
/// <returns></returns>
/// <remarks></remarks>
public bool HidSetFeature(byte featureCode, byte[] value)
{
bool HidSetFeatureRet = default;
var hfile = HidFeatures.OpenHid(this);
if (hfile == IntPtr.Zero)
{
return(false);
}
var mm = new MemPtr();
mm.Alloc(value.Length + 1);
mm.FromByteArray(value, 1L);
mm.ByteAt(0L) = featureCode;
if (!UsbLibHelpers.HidD_SetFeature(hfile, mm, (int)mm.Length))
{
HidSetFeatureRet = false;
}
else
{
HidSetFeatureRet = true;
}
mm.Free();
HidFeatures.CloseHid(hfile);
return(HidSetFeatureRet);
}
/// <summary>
/// Gray out an icon.
/// </summary>
/// <param name="icn">The input icon.</param>
/// <returns>The grayed out icon.</returns>
/// <remarks></remarks>
public static Image GrayIcon(Icon icn)
{
var n = new Bitmap(icn.Width, icn.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
var g = System.Drawing.Graphics.FromImage(n);
g.FillRectangle(Brushes.Transparent, new Rectangle(0, 0, n.Width, n.Height));
g.DrawIcon(icn, 0, 0);
g.Dispose();
var bm = new System.Drawing.Imaging.BitmapData();
var mm = new MemPtr(n.Width * n.Height * 4);
bm.Stride = n.Width * 4;
bm.Scan0 = mm;
bm.PixelFormat = System.Drawing.Imaging.PixelFormat.Format32bppArgb;
bm.Width = n.Width;
bm.Height = n.Height;
bm = n.LockBits(new Rectangle(0, 0, n.Width, n.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite | System.Drawing.Imaging.ImageLockMode.UserInputBuffer, System.Drawing.Imaging.PixelFormat.Format32bppArgb, bm);
int i;
int c;
// Dim b() As Byte
// ReDim b((bm.Stride * bm.Height) - 1)
// MemCpy(b, bm.Scan0, bm.Stride * bm.Height)
c = bm.Stride * bm.Height - 1;
int stp = (int)(bm.Stride / (double)bm.Width);
// For i = 3 To c Step stp
// If b(i) > &H7F Then b(i) = &H7F
// Next
for (i = 3; stp >= 0 ? i <= c : i >= c; i += stp)
{
if (mm.ByteAt(i) > 0x7F)
{
mm.ByteAt(i) = 0x7F;
}
}
// MemCpy(bm.Scan0, b, bm.Stride * bm.Height)
n.UnlockBits(bm);
mm.Free();
return(n);
}
/// <summary>
/// Converts this raw icon source into a managed System.Drawing.Icon image.
/// </summary>
/// <returns>A new Icon object.</returns>
/// <remarks></remarks>
public Icon ToIcon()
{
Icon iconOut;
if (IsPngFormat)
{
Bitmap bmp = (Bitmap)ToImage();
var bmi = new Bitmap(bmp.Width, bmp.Height, System.Drawing.Imaging.PixelFormat.Format1bppIndexed);
var lpicon = default(ICONINFO);
int i;
var bm = bmi.LockBits(new Rectangle(0, 0, bmi.Width, bmi.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format1bppIndexed);
MemPtr mm = bm.Scan0;
int z = (int)(Math.Max(bmp.Width, 32) * bmp.Height / 8d);
for (i = 0; i < z; i++)
{
mm.ByteAt(i) = 255;
}
bmi.UnlockBits(bm);
lpicon.hbmColor = bmp.GetHbitmap();
lpicon.hbmMask = bmi.GetHbitmap();
lpicon.fIcon = 1;
var hIcon = User32.CreateIconIndirect(ref lpicon);
if (hIcon != IntPtr.Zero)
{
iconOut = (Icon)Icon.FromHandle(hIcon).Clone();
User32.DestroyIcon(hIcon);
}
else
{
iconOut = null;
}
NativeShell.DeleteObject(lpicon.hbmMask);
NativeShell.DeleteObject(lpicon.hbmColor);
}
else
{
iconOut = _constructIcon();
}
return(iconOut);
}
protected bool CheckRect(Rectangle rc, int cx, int cy, MemPtr mm)
{
int x;
int y;
int l;
var b = rc.Bottom;
for (y = rc.Top; y <= b; y++)
{
var r = rc.Right;
for (x = rc.Left; x <= r; x++)
{
l = (y * cx + x) * 4;
if (mm.ByteAt(l) < 250 || mm.ByteAt(l + 1) < 250 || mm.ByteAt(l + 2) < 250)
{
return(false);
}
}
}
return(true);
}
/// <summary>
/// Mount the virtual drive, permanently. The virtual drive will stay mounted beyond the lifetime of this instance.
/// </summary>
/// <param name="makePermanent"></param>
/// <returns></returns>
/// <remarks></remarks>
public bool Attach(bool makePermanent)
{
if (_Handle == IntPtr.Zero || Attached)
{
return(false);
}
var mm = new MemPtr(8L);
mm.ByteAt(0L) = 1;
uint r = VirtDisk.AttachVirtualDisk(_Handle, IntPtr.Zero, makePermanent ? ATTACH_VIRTUAL_DISK_FLAG.ATTACH_VIRTUAL_DISK_FLAG_PERMANENT_LIFETIME : ATTACH_VIRTUAL_DISK_FLAG.ATTACH_VIRTUAL_DISK_FLAG_NONE, 0U, mm.Handle, IntPtr.Zero);
mm.Free();
return(r == 0L);
}
/// <summary>
/// Apply transparency mask bits to the output image (for converting to a bitmap)
/// </summary>
/// <param name="hBits">A pointer to the memory address of the bitmap bits.</param>
/// <param name="hMask">A pointer to the memory address of the mask bits.</param>
/// <param name="Width">The width of the image.</param>
/// <param name="Height">The height of the image.</param>
/// <remarks></remarks>
private void _applyMask(MemPtr hBits, MemPtr hMask, int Width, int Height)
{
// Masks in icon images are bitstreams wherein a single bit represents a 1 or 0 transparency
// for an entire pixel on the screen. In order to convert an icon into a 32 bit images,
// we need to access each individual bit, and apply the NOT of the value to the byte-length alpha mask
// of the bitmap.
int x;
int y;
int shift;
int bit;
int shift2;
int mask;
// in transparency masks for icons, the minimum stride is 32 pixels/bits, no matter the actual size of the image.
int boundary = Math.Max(32, Width);
// walk every pixel of the image.
for (y = 0; y < Height; y++)
{
for (x = 0; x < Width; x++)
{
// the first shift is our position in the bitmap output.
// 4 bytes is 32 bits ... then we add 3 to get directly
// to the alpha mask.
shift = 4 * (x + y * Width) + 3;
// we find the exact bit-wise position by modulus with 8 (the length of a byte, in bits)
bit = 7 - x % 8;
// the second shift is the position in the bitmask, byte-wise. We subtract 1 from y before subtracting it from the
// height because the first scan line is 0.
shift2 = (int)((x + (Height - y - 1) * boundary) / 8d);
// we get a number that is either 1 or 0 from the mask by accessing the exact byte, and then
// accessing the exact bit by left-shifting its value into the 1 position.
mask = 1 & hMask.ByteAt(shift2) >> bit;
// we do a quick logical AND via multiplication with the inverse of the mask.
// we do this because alpha channel 0 is transparent, but transparent mask 1 is also transparent.
hBits.ByteAt(shift) *= (byte)(1 - mask);
}
}
}
private void StartWatching(HidDeviceInfo d)
{
IntPtr h;
int i = 0;
if (_devThread is object)
{
StopWatching();
}
var s = new ObservableCollection <string>();
_lastDevice = d;
this.ViewingArea.ItemsSource = s;
for (i = 0; i <= 255; i++)
{
s.Add("");
}
var th = new Thread(() =>
{
cts = new CancellationTokenSource();
h = HidFeatures.OpenHid(d);
if ((long)h <= 0L)
{
return;
}
var mm = new MemPtr(65L);
try
{
do
{
this.Dispatcher.Invoke(() =>
{
for (i = 0; i <= 255; i++)
{
mm.LongAtAbsolute(1L) = 0L;
mm.ByteAt(0L) = (byte)i;
if (HidD_GetFeature(h, mm, 65))
{
s[i] = "HID CODE " + i.ToString("X2") + " = " + mm.IntAtAbsolute(1L);
}
}
});
Thread.Sleep(1000);
if (cts is null || cts.IsCancellationRequested)
{
break;
}
}while (true);
mm.Free();
HidFeatures.CloseHid(h);
cts = null;
return;
}
catch (ThreadAbortException)
{
mm.Free();
HidFeatures.CloseHid(h);
cts = null;
return;
}
catch (Exception)
{
mm.Free();
HidFeatures.CloseHid(h);
cts = null;
return;
}
});
th.IsBackground = true;
th.SetApartmentState(ApartmentState.STA);
_devThread = th;
th.Start();
}
/// <summary>
/// Perform all the calculations necessary to determine the
/// usable text area from the given template and stationary image.
/// </summary>
/// <returns></returns>
/// <remarks></remarks>
protected Rectangle[] Calculate()
{
Rectangle[] CalculateRet = default;
Bitmap bmp;
// what we're going to do is map every possible rectangular region in the image.
// we will accept a certain percentage of white space to add that rectangle to the image.
double minX;
double minY;
int x;
int y;
int cx;
int cy;
int l;
int c = 0;
int d = 0;
var rcCol = new List <Rectangle>();
var lineParts = new LineSegments();
var ceArgs = new CalculatedEventArgs(null, 0, DateTime.MinValue, DateTime.MinValue);
ceArgs.StartTimer();
// Dim sMult As Double = 1.0#
// Dim maxImg As Integer = 2400
bmp = _img;
// If _img.Width > maxImg OrElse _img.Height > maxImg Then
// If _img.Width > _img.Height Then
// x = maxImg
// y = _img.Height * (maxImg / _img.Width)
// sMult = maxImg / _img.Width
// Else
// y = maxImg
// x = _img.Width * (maxImg / _img.Height)
// sMult = maxImg / _img.Height
// End If
// bmp = New Bitmap(x, y, PixelFormat.Format32bppArgb)
// Dim g As Graphics = Graphics.FromImage(bmp)
// g.PixelOffsetMode = Drawing2D.PixelOffsetMode.HighQuality
// g.InterpolationMode = Drawing2D.InterpolationMode.HighQualityBicubic
// g.SmoothingMode = Drawing2D.SmoothingMode.None
// g.DrawImage(_img, 0, 0, x, y)
// g.Dispose()
// _img = bmp
// Else
// bmp = _img
// End If
cx = bmp.Width;
cy = bmp.Height;
minX = _minUsableX * cx;
minY = _minUsableY * cy;
var bm = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
MemPtr mm = bm.Scan0;
ceArgs.TotalCalculations = cx * cy * 2;
for (y = 0; y < cy; y++)
{
c = -1;
d = -1;
for (x = 0; x < cx; x++)
{
l = (y * cx + x) * 4;
if (mm.ByteAt(l) >= 250 && mm.ByteAt(l + 1) >= 250 && mm.ByteAt(l + 2) >= 250)
{
if (c == -1)
{
c = x;
d = 0;
}
else
{
d += 1;
}
}
else if (d != -1)
{
if (d > minX)
{
lineParts.Add(new LineSegment(c, d, y));
}
c = -1;
d = -1;
}
}
if (d > minX)
{
lineParts.Add(new LineSegment(c, d, y));
}
}
lineParts.Sort();
_rawData = lineParts;
var experiment = new List <LineSegments>();
LineSegments temp;
// Dim temp2 As LineSegments
double minArea = minX * minY;
minArea *= 0.5d;
ceArgs.TotalCalculations += cx * cy;
var loopTo2 = cx - 1;
for (x = 0; (int)(cx * 0.0375d) >= 0 ? x <= loopTo2 : x >= loopTo2; x += (int)(cx * 0.0375d))
{
var loopTo3 = cy - 1;
for (y = 0; (int)(cy * 0.0375d) >= 0 ? y <= loopTo3 : y >= loopTo3; y += (int)(cy * 0.0375d))
{
l = (y * cx + x) * 4;
temp = _rawData.FindSet(x, cx - x, y, false);
if (temp is null || temp.Area < minArea)
{
continue;
}
for (l = temp.Count - 2; l >= 1; l -= 1)
{
if (temp[l].Index - temp[l - 1].Index > temp.OriginContinuityThreshold)
{
temp.RemoveAt(l - 1);
}
}
ceArgs.TotalCalculations += temp.Count + _rawData.Count;
experiment.Add(temp);
}
}
experiment.Sort(new SortByArea());
experiment.Reverse();
LineSegments[] pps; // = lineParts.FindAllContiguousRegions
pps = experiment.ToArray();
Clear();
bmp.UnlockBits(bm);
ceArgs.TotalCalculations += pps.Count() + _rawData.Count;
_Regions.Clear();
foreach (var px in pps)
{
var rc = px.Bounds;
temp = _rawData.FindSet(rc.Left, rc.Right, rc.Top, true, false);
if (temp is null)
{
continue;
}
rc = temp.Bounds;
if (rc.Width < minX)
{
continue;
}
if (rc.Height < minY)
{
continue;
}
rc.Inflate(-20, -20);
if (_purgeOverlaps)
{
refor:
;
foreach (var rcChk in rcCol)
{
if (rcChk.IntersectsWith(rc))
{
if (rcChk.Width * rcChk.Height > rc.Width * rc.Height) // AndAlso (rcChk.Width > rc.Width) Then
{
rc = rcChk;
}
else if (TestSquareness(rcChk) < TestSquareness(rc)) // AndAlso (rc.Width >= rcChk.Width) Then
{
rcCol.Remove(rcChk);
goto refor;
}
else
{
rc = Rectangle.Empty;
}
break;
}
}
}
if (temp is object)
{
Add(temp);
}
if (rc != Rectangle.Empty)
{
// If CheckRect(rc, cx, cy, mm) = False Then Continue For
rcCol.Add(rc);
_Regions.Add(rc);
}
}
ceArgs.StopTimer();
CalculateRet = rcCol.ToArray();
ceArgs.Regions = _Regions;
OnPropertyChanged("Regions");
OnPropertyChanged("RawOutput");
Calculated?.Invoke(this, ceArgs);
return(CalculateRet);
}
