unsafe private static void A8R8G8B8toB8G8R8(PixelBox src, PixelBox dst)
{
uint * srcptr = (uint *)(src.Data.ToPointer());
Col3b *dstptr = (Col3b *)(dst.Data.ToPointer());
int srcSliceSkip = src.SliceSkip;
int dstSliceSkip = dst.SliceSkip;
int k = src.Right - src.Left;
for (int z = src.Front; z < src.Back; z++)
{
for (int y = src.Top; y < src.Bottom; y++)
{
for (int x = 0; x < k; x++)
{
uint inp = srcptr[x];
dstptr[x].x = (byte)((inp >> 0) & 0xFF);
dstptr[x].y = (byte)((inp >> 8) & 0xFF);
dstptr[x].z = (byte)((inp >> 16) & 0xFF);
}
srcptr += src.RowPitch;
dstptr += dst.RowPitch;
}
srcptr += srcSliceSkip;
dstptr += dstSliceSkip;
}
}
unsafe private static void R8G8B8toB8G8R8A8(PixelBox src, PixelBox dst)
{
Col3b *srcptr = (Col3b *)(src.Data.ToPointer());
uint * dstptr = (uint *)(dst.Data.ToPointer());
int xshift = 8;
int yshift = 16;
int zshift = 24;
int ashift = 0;
int srcSliceSkip = src.SliceSkip;
int dstSliceSkip = dst.SliceSkip;
int k = src.Right - src.Left;
for (int z = src.Front; z < src.Back; z++)
{
for (int y = src.Top; y < src.Bottom; y++)
{
for (int x = 0; x < k; x++)
{
Col3b inp = srcptr[x];
#if BIG_ENDIAN
dstptr[x] = ((uint)(0xFF << ashift)) | (((uint)inp.x) << xshift) | (((uint)inp.y) << yshift) | (((uint)inp.z) << zshift);
#else
dstptr[x] = ((uint)(0xFF << ashift)) | (((uint)inp.x) << zshift) | (((uint)inp.y) << yshift) | (((uint)inp.z) << xshift);
#endif
}
srcptr += src.RowPitch;
dstptr += dst.RowPitch;
}
srcptr += srcSliceSkip;
dstptr += dstSliceSkip;
}
}
unsafe private static void B8G8R8toR8G8B8(PixelBox src, PixelBox dst)
{
Col3b *srcptr = (Col3b *)(src.Data.ToPointer());
Col3b *dstptr = (Col3b *)(dst.Data.ToPointer());
int srcSliceSkip = src.SliceSkip;
int dstSliceSkip = dst.SliceSkip;
int k = src.Right - src.Left;
for (int z = src.Front; z < src.Back; z++)
{
for (int y = src.Top; y < src.Bottom; y++)
{
for (int x = 0; x < k; x++)
{
Col3b inp = srcptr[x];
dstptr[x].x = inp.z;
dstptr[x].y = inp.y;
dstptr[x].z = inp.x;
}
srcptr += src.RowPitch;
dstptr += dst.RowPitch;
}
srcptr += srcSliceSkip;
dstptr += dstSliceSkip;
}
}