public static void Save(string path, Surface surface)
{
if (surface is null)
{
throw new ArgumentNullException(nameof(surface));
}
using (FileStream stream = new FileStream(path,
FileMode.Create,
FileAccess.Write,
FileShare.None,
BufferSize,
FileOptions.SequentialScan))
{
PSFilterShimImageHeader header = new PSFilterShimImageHeader(surface.Width,
surface.Height,
96.0f,
96.0f);
header.Save(stream);
byte[] buffer = new byte[header.Stride];
unsafe
{
for (int y = 0; y < header.Height; y++)
{
ColorBgra *src = surface.GetRowAddressUnchecked(y);
Marshal.Copy(new IntPtr(src), buffer, 0, buffer.Length);
stream.Write(buffer, 0, buffer.Length);
}
}
}
}
public static Surface Load(string path, out float dpiX, out float dpiY)
{
Surface surface = null;
using (FileStream stream = new FileStream(path,
FileMode.Open,
FileAccess.Read,
FileShare.Read,
BufferSize,
FileOptions.SequentialScan))
{
PSFilterShimImageHeader header = new PSFilterShimImageHeader(stream);
dpiX = header.DpiX;
dpiY = header.DpiY;
surface = new Surface(header.Width, header.Height);
byte[] buffer = new byte[header.Stride];
unsafe
{
for (int y = 0; y < header.Height; y++)
{
stream.ProperRead(buffer, 0, buffer.Length);
ColorBgra *dst = surface.GetRowAddressUnchecked(y);
Marshal.Copy(buffer, 0, new IntPtr(dst), buffer.Length);
}
}
}
return(surface);
}
