public EpfImage(Stream stream, bool leaveOpen = true)
{
this.frames = new List <EpfFrame>();
var reader = new BinaryReader(stream);
var frameCount = reader.ReadUInt16();
this.width = reader.ReadInt16();
this.height = reader.ReadInt16();
var unknown = reader.ReadUInt16();
var tableOffset = reader.ReadUInt32();
reader.BaseStream.Position += tableOffset;
for (int i = 0; i < frameCount; i++)
{
var left = reader.ReadInt16();
var top = reader.ReadInt16();
var right = reader.ReadInt16();
var bottom = reader.ReadInt16();
long startAddress = reader.ReadUInt32();
long endAddress = reader.ReadUInt32();
var frameWidth = Math.Abs(right - left);
var frameHeight = Math.Abs(bottom - top);
var size = frameWidth * frameHeight;
var bits = new byte[size];
if (size > 0)
{
long previousPosition = reader.BaseStream.Position;
reader.BaseStream.Position = startAddress;
reader.Read(bits, 0, size);
reader.BaseStream.Position = previousPosition;
}
var frame = new EpfFrame(i, left, top, frameWidth, frameHeight, bits);
frames.Add(frame);
}
if (!leaveOpen)
{
stream.Dispose();
}
}
public EpfImage(Stream stream, bool leaveOpen = true)
{
this.frames = new List<EpfFrame>();
var reader = new BinaryReader(stream);
var frameCount = reader.ReadUInt16();
this.width = reader.ReadInt16();
this.height = reader.ReadInt16();
var unknown = reader.ReadUInt16();
var tableOffset = reader.ReadUInt32();
reader.BaseStream.Position += tableOffset;
for (int i = 0; i < frameCount; i++)
{
var left = reader.ReadInt16();
var top = reader.ReadInt16();
var right = reader.ReadInt16();
var bottom = reader.ReadInt16();
long startAddress = reader.ReadUInt32();
long endAddress = reader.ReadUInt32();
var frameWidth = Math.Abs(right - left);
var frameHeight = Math.Abs(bottom - top);
var size = frameWidth * frameHeight;
var bits = new byte[size];
if (size > 0)
{
long previousPosition = reader.BaseStream.Position;
reader.BaseStream.Position = startAddress;
reader.Read(bits, 0, size);
reader.BaseStream.Position = previousPosition;
}
var frame = new EpfFrame(i, left, top, frameWidth, frameHeight, bits);
frames.Add(frame);
}
if (!leaveOpen)
stream.Dispose();
}
public RenderedBitmap Render(EpfFrame frame, ColorPalette palette)
{
if (frame == null)
throw new ArgumentNullException("frame");
if (palette == null)
throw new ArgumentNullException("palette");
palette = palette.MakeGrayscale();
var format = PixelFormats.Bgra32;
var width = frame.Width;
var height = frame.Height;
var stride = (width * 4) + (width % 4);
var bits = new byte[height * stride];
for (int x = 0; x < width; x++)
for (int y = 0; y < height; y++)
{
var fixedX = x;
var fixedY = y;
var threshold = 12;
if (fixedX < threshold)
{
if (width >= threshold)
fixedX = width - (threshold - fixedX);
if (fixedY > 0)
fixedY--;
}
else
fixedX -= threshold;
var pixel = frame.RawData[x + y * width];
if (pixel > 0)
SetPixel(bits, fixedX, fixedY, stride, palette[pixel]);
else
SetPixel(bits, fixedX, fixedY, stride, Colors.Transparent);
}
var bitmap = new RenderedBitmap(width, height, stride, format, bits);
return bitmap;
}
public RenderedBitmap Render(EpfFrame frame, ColorPalette palette)
{
if (frame == null)
{
throw new ArgumentNullException("frame");
}
if (palette == null)
{
throw new ArgumentNullException("palette");
}
palette = palette.MakeGrayscale();
var format = PixelFormats.Bgra32;
var width = frame.Width;
var height = frame.Height;
var stride = (width * 4) + (width % 4);
var bits = new byte[height * stride];
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
var fixedX = x;
var fixedY = y;
var threshold = 12;
if (fixedX < threshold)
{
if (width >= threshold)
{
fixedX = width - (threshold - fixedX);
}
if (fixedY > 0)
{
fixedY--;
}
}
else
{
fixedX -= threshold;
}
var pixel = frame.RawData[x + y * width];
if (pixel > 0)
{
SetPixel(bits, fixedX, fixedY, stride, palette[pixel]);
}
else
{
SetPixel(bits, fixedX, fixedY, stride, Colors.Transparent);
}
}
}
var bitmap = new RenderedBitmap(width, height, stride, format, bits);
return(bitmap);
}
