/// <summary>
/// Packed Bitmap decoder. Calls from ConvertCustomToBitmap if the bitmap is packed, not snes.
/// </summary>
/// <param name="_buffer">Bitmap data</param>
/// <param name="_palette">palette data</param>
/// <param name="bpp">bits-per-pixel</param>
/// <returns>Bitmap</returns>
private static Bitmap PackedDecode(byte[] _buffer, Color[] _palette, int bpp)
{
IBitformat format = SnesGFX.AvaiableFormats[Settings.Default.Codec];
// let's get the width
int width = bitmapInfo.Width;
int height = _buffer.Length;
if (format.Type == BitformatType.BITFORMAT_PACKED)
{
height = height * 8 / format.BitsPerPixel;
}
height /= width;
//int packedtype;
//if (!Options.PreserveWidth)
//{
// width = 128;
//}
//if (Options.PackPacked)
//{
// switch (Settings.Default.Codec)
// {
// case 4:
// packedtype = 2;
// height *= 4;
// break;
// case 5:
// packedtype = 4;
// height *= 2;
// break;
// case 6:
// case 7:
// packedtype = 8;
// break;
// default:
// packedtype = 2;
// height /= 4;
// break;
// }
//}
//else
//{
// packedtype = 8;
//}
//height /= width;
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format8bppIndexed);
ColorPalette pal = bmp.Palette;
int x = 0;
while (x < _palette.Length)
{
pal.Entries[x] = _palette[x++];
}
bmp.Palette = pal;
byte[] output = format.Decode(_buffer);
//ExGraphics.CodecInfo codec = new SuperFX.ExGraphics.CodecInfo(-1);
//codec.Decode = true;
//codec.SysName = string.Format("Pack{0}BPP", packedtype);
//codec.Data = _buffer;
//ExGraphics.StartCodec = codec;
var bmpData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite,
PixelFormat.Format8bppIndexed);
IntPtr ptr = bmpData.Scan0;
int bytes = Math.Abs(bmpData.Stride) * height;
Marshal.Copy(output, 0, ptr, bytes);
bmp.UnlockBits(bmpData);
return(bmp);
}
/// <summary>
/// Converts a SNES/PACKED BIT-MAP to Bitmap.
/// </summary>
/// <param name="_buffer">The raw data</param>
/// <param name="_palette">Palette</param>
/// <param name="bpp">bits-per-pixel</param>
/// <returns>The Bitmap</returns>
public static Bitmap ConvertCustomToBitmap(byte[] _buffer, Color[] _palette, int bpp)
{
if (SnesGFX.AvaiableFormats[Settings.Default.Codec].Type != BitformatType.BITFORMAT_PLANAR)
{
return(PackedDecode(_buffer, _palette, bpp));
}
long a8x8 = 0;
long size = _buffer.Length;
a8x8 = size / ((64 * bpp) / 8);
int height = (int)((a8x8 / 16) * 8);
int width = (int)((a8x8 > 16) ? 128 : a8x8 * 8);
if (height == 0)
{
height = 0;
}
if (height % 8 != 0)
{
height += 8 - (height % 8);
}
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format8bppIndexed);
ColorPalette pal = bmp.Palette;
int x = 0; while (x < _palette.Length)
{
pal.Entries[x] = _palette[x++];
}
if (Options.AllowTransparency)
{
pal.Entries[0] = Color.Transparent;
}
bmp.Palette = pal;
IBitformat format = SnesGFX.AvaiableFormats[Settings.Default.Codec];
byte[] output = format.Decode(_buffer);
var bmpData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite,
PixelFormat.Format8bppIndexed);
IntPtr ptr = bmpData.Scan0;
int bytes = Math.Abs(bmpData.Stride) * height;
//fixed (byte* ptr2 = output)
//{
// byte[] rgbValues = SuperFX.ExGraphics.a8x8ToTilemap(ptr2, width, codec.output.Length);
// Marshal.Copy(rgbValues, 0, ptr, bytes);
// rgbValues = null;
//}
Marshal.Copy(output, 0, ptr, bytes);
bmp.UnlockBits(bmpData);
return(bmp);
}
