public void Create(int Width, int Height, GR.Drawing.PixelFormat PixelFormat)
{
Clear();
m_Width = Width;
m_Height = Height;
m_PixelFormat = PixelFormat;
int bytesPerLine = BitsPerPixel * Width / 8;
m_ImageData.Resize((uint)(bytesPerLine * Height));
switch (m_PixelFormat)
{
case GR.Drawing.PixelFormat.Format1bppIndexed:
m_PaletteData = new GR.Memory.ByteBuffer(2 * 3);
break;
case GR.Drawing.PixelFormat.Format4bppIndexed:
m_PaletteData = new GR.Memory.ByteBuffer(16 * 3);
break;
case GR.Drawing.PixelFormat.Format8bppIndexed:
m_PaletteData = new GR.Memory.ByteBuffer(256 * 3);
break;
case GR.Drawing.PixelFormat.Format16bppRgb555:
case GR.Drawing.PixelFormat.Format24bppRgb:
case GR.Drawing.PixelFormat.Format32bppArgb:
case GR.Drawing.PixelFormat.Format32bppRgb:
break;
default:
throw new NotSupportedException("Pixelformat " + PixelFormat + " not supported");
}
}
public GR.Memory.ByteBuffer CreateHDIBAsBuffer()
{
GR.Memory.ByteBuffer result = new GR.Memory.ByteBuffer();
BITMAPINFOHEADER bi = new BITMAPINFOHEADER();
int dwLen;
IntPtr hDIB;
if ((BitsPerPixel != 1) &&
(BitsPerPixel != 2) &&
(BitsPerPixel != 4) &&
(BitsPerPixel != 8) &&
(BitsPerPixel != 15) &&
(BitsPerPixel != 16) &&
(BitsPerPixel != 24) &&
(BitsPerPixel != 32))
{
// not supported depth
return(null);
}
bi.biSize = System.Runtime.InteropServices.Marshal.SizeOf(bi);
bi.biWidth = Width;
bi.biHeight = Height;
bi.biPlanes = 1;
bi.biBitCount = (short)BitsPerPixel;
if (bi.biBitCount == 15)
{
bi.biBitCount = 16;
}
bi.biCompression = (int)BitmapCompression.BI_RGB;
bi.biSizeImage = (int)(((((uint)bi.biWidth * bi.biBitCount) + 31) / 32 * 4) * bi.biHeight);
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrUsed = 0;
bi.biClrImportant = 0;
// calculate size of memory block required to store BITMAPINFO
dwLen = bi.biSize + PaletteSize(bi) + bi.biSizeImage;
hDIB = System.Runtime.InteropServices.Marshal.AllocHGlobal(dwLen);
if (hDIB == IntPtr.Zero)
{
// uh oh
return(null);
}
unsafe
{
// lock memory block and get pointer to it
BITMAPINFOHEADER *lpbi = (BITMAPINFOHEADER *)GlobalLock(hDIB);
// Daten in den Puffer kopieren
*lpbi = bi;
// Bild-Daten kopieren
switch (bi.biBitCount)
{
case 1:
{
// Palette in DC setzen
if (PaletteEntryCount > 0)
{
RGBQUAD *bmiColor;
bmiColor = (RGBQUAD *)((byte *)lpbi + lpbi->biSize);
for (int i = 0; i < 2; i++)
{
bmiColor[i].rgbRed = PaletteRed(i);
bmiColor[i].rgbGreen = PaletteGreen(i);
bmiColor[i].rgbBlue = PaletteBlue(i);
bmiColor[i].rgbReserved = 0;
}
}
byte *pData = (byte *)lpbi + lpbi->biSize + PaletteSize(bi);
int iLO = Width / 8;
if ((Width & 7) != 0)
{
iLO++;
}
if ((iLO % 4) != 0)
{
iLO += 4 - (iLO % 4);
}
/*
* GR::Graphic::ContextDescriptor cdImage( Image );
* GR::Graphic::ContextDescriptor cdTarget;
*
* cdTarget.Attach( cdImage.Width(), cdImage.Height(), iLO, cdImage.ImageFormat(), pData );
*
* for ( int j = 0; j < Image.Height(); j++ )
* {
* cdTarget.HLine( 0, cdTarget.Width() - 1, j, 1 );
* cdTarget.HLine( 1, cdTarget.Width() - 2, j, 0 );
* }*/
}
break;
case 4:
{
// Palette in DC setzen
if (PaletteEntryCount > 0)
{
RGBQUAD *bmiColor = (RGBQUAD *)((byte *)lpbi + lpbi->biSize);
for (int i = 0; i < 16; i++)
{
bmiColor[i].rgbRed = PaletteRed(i);
bmiColor[i].rgbGreen = PaletteGreen(i);
bmiColor[i].rgbBlue = PaletteBlue(i);
bmiColor[i].rgbReserved = 0;
}
}
byte *pData = (byte *)lpbi + lpbi->biSize + PaletteSize(bi);
int iLO = Width / 2;
if ((Width & 1) != 0)
{
iLO++;
}
if ((iLO % 4) != 0)
{
iLO += 4 - (iLO % 4);
}
for (int j = 0; j < Height; j++)
{
for (int i = 0; i < Width; i++)
{
((byte *)pData)[i + (Height - j - 1) * iLO] = (byte)GetPixel(i, j);
}
}
/*
* GR::Graphic::ContextDescriptor cdImage( Image );
* GR::Graphic::ContextDescriptor cdTarget;
*
* cdTarget.Attach( cdImage.Width(), cdImage.Height(), iLO, cdImage.ImageFormat(), pData );
*
* for ( int j = 0; j < Image.Height(); j++ )
* {
* cdImage.CopyLine( 0, j, cdImage.Width(), 0, cdImage.Height() - j - 1, &cdTarget );
* }*/
}
break;
case 8:
{
// Palette in DC setzen
if (PaletteEntryCount > 0)
{
RGBQUAD *bmiColor;
bmiColor = (RGBQUAD *)((byte *)lpbi + lpbi->biSize);
for (int i = 0; i < 256; i++)
{
bmiColor[i].rgbRed = PaletteRed(i);
bmiColor[i].rgbGreen = PaletteGreen(i);
bmiColor[i].rgbBlue = PaletteBlue(i);
bmiColor[i].rgbReserved = 0;
}
}
byte *pData = (byte *)lpbi + lpbi->biSize + PaletteSize(bi);
int iLO = Width;
if ((iLO % 4) != 0)
{
iLO += 4 - (iLO % 4);
}
for (int j = 0; j < Height; j++)
{
for (int i = 0; i < Width; i++)
{
((byte *)pData)[i + (Height - j - 1) * iLO] = (byte)GetPixel(i, j);
}
}
}
break;
case 16:
{
byte *pData = (byte *)lpbi + lpbi->biSize + PaletteSize(bi);
int iLO = Width * 2;
if ((iLO % 4) != 0)
{
iLO += 4 - (iLO % 4);
}
for (int j = 0; j < Height; j++)
{
for (int i = 0; i < Width; i++)
{
((ushort *)pData)[i + (Height - j - 1) * iLO / 2] = (ushort)GetPixel(i, j);
}
}
}
break;
/*
* case 24:
* {
* byte *pData = (byte*)lpbi + lpbi->biSize + PaletteSize( bi );
*
* int iLO = Width * 3;
* if ( ( iLO % 4 ) != 0 )
* {
* iLO += 4 - ( iLO % 4 );
* }
* for ( int j = 0; j < Height; j++ )
* {
* for ( int i = 0; i < Width; i++ )
* {
* ( (byte*)pData )[3 * i + ( Height - j - 1 ) * iLO] = (byte)*( (byte*)Image.Data() + 3 * ( i + j * Image.Width() ) );
* ( (byte*)pData )[3 * i + ( Height - j - 1 ) * iLO + 1] = (byte)*( (byte*)Image.Data() + 3 * ( i + j * Image.Width() ) + 1 );
* ( (byte*)pData )[3 * i + ( Height - j - 1 ) * iLO + 2] = (byte)*( (byte*)Image.Data() + 3 * ( i + j * Image.Width() ) + 2 );
* }
* }
* }
* break;*/
case 32:
{
byte *pData = (byte *)lpbi + lpbi->biSize + PaletteSize(bi);
int iLO = Width;
for (int j = 0; j < Height; j++)
{
for (int i = 0; i < Width; i++)
{
((uint *)pData)[i + (Height - j - 1) * iLO] = GetPixel(i, j);
}
}
}
break;
default:
Debug.Log("CreateHDIBAsBuffer unsupported depth " + bi.biBitCount);
break;
}
byte *pDIBData = (byte *)lpbi;
result.Resize((uint)(bi.biSize + PaletteSize(bi) + bi.biSizeImage));
System.Runtime.InteropServices.Marshal.Copy(new IntPtr(pDIBData), result.Data(), 0, (int)result.Length);
GlobalUnlock(hDIB);
System.Runtime.InteropServices.Marshal.FreeHGlobal(hDIB);
}
return(result);
}