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to mat init

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辉鸭蛋
2025-03-14 01:57:54 +08:00
parent 616293432d
commit 1cc889c6f2
13 changed files with 110 additions and 61 deletions
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64
Fischless.GameCapture/BitBlt/BitBltCapture.cs
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@@ -1,4 +1,6 @@
using System.Diagnostics;
using System.Runtime.InteropServices;
using OpenCvSharp;
using Vanara.PInvoke;
namespace Fischless.GameCapture.BitBlt;
@@ -26,34 +28,74 @@ public class BitBltCapture : IGameCapture
}
}
public Bitmap? Capture()
public Mat? Capture()
{
if (_hWnd == IntPtr.Zero)
{
return null;
}
User32.SafeReleaseHDC hdcSrc = User32.SafeReleaseHDC.Null;
Gdi32.SafeHDC hdcDest = Gdi32.SafeHDC.Null;
Gdi32.SafeHBITMAP hBitmap = Gdi32.SafeHBITMAP.Null;
try
{
User32.GetClientRect(_hWnd, out var windowRect);
int x = default, y = default;
int x = 0, y = 0;
var width = windowRect.right - windowRect.left;
var height = windowRect.bottom - windowRect.top;
Bitmap bitmap = new(width, height);
using System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
var hdcDest = g.GetHdc();
var hdcSrc = User32.GetDC(_hWnd == IntPtr.Zero ? User32.GetDesktopWindow() : _hWnd);
hdcSrc = User32.GetDC(_hWnd == IntPtr.Zero ? User32.GetDesktopWindow() : _hWnd);
hdcDest = Gdi32.CreateCompatibleDC(hdcSrc);
var bmi = new Gdi32.BITMAPINFO
{
bmiHeader = new Gdi32.BITMAPINFOHEADER
{
biSize = (uint)Marshal.SizeOf<Gdi32.BITMAPINFOHEADER>(),
biWidth = width,
biHeight = -height, // Top-down image
biPlanes = 1,
biBitCount = 32,
biCompression = 0, // BI_RGB
biSizeImage = 0
}
};
nint bits = 0;
hBitmap = Gdi32.CreateDIBSection(hdcDest, bmi, Gdi32.DIBColorMode.DIB_RGB_COLORS, out bits, IntPtr.Zero, 0);
var oldBitmap = Gdi32.SelectObject(hdcDest, hBitmap);
Gdi32.StretchBlt(hdcDest, 0, 0, width, height, hdcSrc, x, y, width, height, Gdi32.RasterOperationMode.SRCCOPY);
g.ReleaseHdc();
Gdi32.DeleteDC(hdcDest);
Gdi32.DeleteDC(hdcSrc);
return bitmap;
var mat = new Mat(height, width, MatType.CV_8UC4, bits);
Mat bgrMat = new Mat();
Cv2.CvtColor(mat, bgrMat, ColorConversionCodes.BGRA2BGR);
Gdi32.SelectObject(hdcDest, oldBitmap);
return bgrMat;
}
catch (Exception e)
{
Debug.WriteLine(e);
}
finally
{
if (hBitmap != Gdi32.SafeHBITMAP.Null)
{
Gdi32.DeleteObject(hBitmap);
}
if (hdcDest != Gdi32.SafeHDC.Null)
{
Gdi32.DeleteDC(hdcDest);
}
if (_hWnd != IntPtr.Zero)
{
User32.ReleaseDC(_hWnd, hdcSrc);
}
}
return null!;
}
@@ -63,4 +105,4 @@ public class BitBltCapture : IGameCapture
_hWnd = IntPtr.Zero;
IsCapturing = false;
}
}
}