public static MemBitmap CopyImgBuffer(this MemBitmap src, int srcX, int srcY, int srcW, int srcH)
{
//simple copy
Rectangle orgSourceRect = new Rectangle(0, 0, src.Width, src.Height);
Rectangle requestRect = new Rectangle(srcX, srcY, srcW, srcH);
Rectangle toCopyRect = Rectangle.Intersect(new Rectangle(0, 0, src.Width, src.Height),
new Rectangle(srcX, srcY, srcW, srcH));
if (toCopyRect.Width == 0 || toCopyRect.Height == 0)
{
return(null);
}
//-----
MemBitmap copyBmp = new MemBitmap(toCopyRect.Width, toCopyRect.Height);
unsafe
{
using (CpuBlit.Imaging.TempMemPtr srcBufferPtr = MemBitmap.GetBufferPtr(src))
using (CpuBlit.Imaging.TempMemPtr dstBufferPtr = MemBitmap.GetBufferPtr(copyBmp))
{
int *srcPtr = (int *)srcBufferPtr.Ptr;
int *dstPtr = (int *)dstBufferPtr.Ptr;
int lineEnd = srcY + srcH;
int orgSrcW = src.Width;
for (int line = toCopyRect.Top; line < toCopyRect.Bottom; ++line)
{
NativeMemMx.memcpy((byte *)dstPtr, (byte *)(srcPtr + ((line * orgSrcW) + toCopyRect.Left)), toCopyRect.Width * 4);
dstPtr += toCopyRect.Width;
}
}
}
return(copyBmp);
}
public static int[] CopyImgBuffer(MemBitmap memBmp, int width, int height)
{
//calculate stride for the width
int destStride = MemBitmap.CalculateStride(width, CpuBlit.Imaging.PixelFormat.ARGB32);
int newBmpW = destStride / 4;
int[] buff2 = new int[newBmpW * height];
unsafe
{
using (CpuBlit.Imaging.TempMemPtr srcBufferPtr = MemBitmap.GetBufferPtr(memBmp))
{
byte* srcBuffer = (byte*)srcBufferPtr.Ptr;
int srcIndex = 0;
int srcStride = memBmp.Stride;
fixed (int* destHead = &buff2[0])
{
byte* destHead2 = (byte*)destHead;
for (int line = 0; line < height; ++line)
{
//System.Runtime.InteropServices.Marshal.Copy(srcBuffer, srcIndex, (IntPtr)destHead2, destStride);
NativeMemMx.memcpy((byte*)destHead2, srcBuffer + srcIndex, destStride);
srcIndex += srcStride;
destHead2 += destStride;
}
}
}
}
return buff2;
}
/// <summary>
/// copy from actual image direct to hBmpScan0
/// </summary>
/// <param name="memBmp"></param>
/// <param name="hBmpScan0"></param>
public static void CopyToWindowsBitmapSameSize(
MemBitmap memBmp,
IntPtr hBmpScan0)
{
//1st, fast
CpuBlit.Imaging.TempMemPtr tmp = MemBitmap.GetBufferPtr(memBmp);
//System.Runtime.InteropServices.Marshal.Copy(rawBuffer, 0,
// hBmpScan0, rawBuffer.Length);
unsafe
{
NativeMemMx.memcpy((byte *)hBmpScan0, (byte *)tmp.Ptr, tmp.LengthInBytes);
}
}
public static int[] CopyImgBuffer(MemBitmap src, int srcX, int srcY, int srcW, int srcH)
{
//calculate stride for the width
int destStride = MemBitmap.CalculateStride(srcW, CpuBlit.Imaging.PixelFormat.ARGB32);
int newBmpW = destStride / 4;
int[] buff2 = new int[newBmpW * srcH];
unsafe
{
using (CpuBlit.Imaging.TempMemPtr srcBufferPtr = MemBitmap.GetBufferPtr(src))
{
byte* srcBuffer = (byte*)srcBufferPtr.Ptr;
int srcIndex = 0;
int srcStride = src.Stride;
fixed (int* destHead = &buff2[0])
{
byte* destHead2 = (byte*)destHead;
//move to specific src line
srcIndex += srcStride * srcY;
int lineEnd = srcY + srcH;
for (int line = srcY; line < lineEnd; ++line)
{
//System.Runtime.InteropServices.Marshal.Copy(srcBuffer, srcIndex, (IntPtr)destHead2, destStride);
NativeMemMx.memcpy((byte*)destHead2, srcBuffer + srcIndex, destStride);
srcIndex += srcStride;
destHead2 += destStride;
}
}
}
}
return buff2;
}
