public Bitmap LoadBitmap(TableEntry entry)
{
var result = new Bitmap(entry.Width, entry.Height, PixelFormat.Format16bppRgb565);
Width = (ushort)result.Width;
Height = (ushort)result.Height;
int size = result.Width * result.Height, idx = 0;
var pixels = new short[size];
using (FileStream fs = new FileStream(Path, FileMode.Open, FileAccess.Read))
using (BinaryReader br = new BinaryReader(fs))
{
fs.Position = entry.Offset;
while (idx < size)
{
var data = ReverseBytes(br.ReadUInt32());
var reps = data & RepetitionMask;
for (uint i = 0; i < reps; i++, idx++)
{
if (idx >= size)
{
lock (_consoleLock)
Console.WriteLine($"WARNING! {entry.Id} image with expected size {size} overwrites itself by {reps - i} pixels!");
break;
}
pixels[idx] = (short)((data >> 16) | (data << 12 >> 28));
}
}
}
var bmp = result.LockBits(new Rectangle(0, 0, result.Width, result.Height), ImageLockMode.WriteOnly, result.PixelFormat);
for (int y = 0; y < result.Height; y++)
{
Marshal.Copy(pixels, y * result.Width, IntPtr.Add(bmp.Scan0, y * bmp.Stride), result.Width);
}
result.UnlockBits(bmp);
return(result);
}
private static void EncodeBitmaps(string inputDirectory, bool optimize, bool ignoreConstraits)
{
var reg = new Regex("(\\d+)_.*");
var files = Directory.EnumerateFiles(inputDirectory, "*_*.bmp", SearchOption.TopDirectoryOnly)
.Where(f => reg.IsMatch(f))
.Select(f => new { Path = f, Identifier = ushort.Parse(reg.Match(Path.GetFileName(f)).Groups[1].Value, CultureInfo.InvariantCulture) })
.OrderBy(f => f.Identifier) // order by identifier, as th screens checks if identifier match an index
.ToArray();
if (!ignoreConstraits && !EncoderInputIsOkay(files.Select(f => f.Identifier)))
{
return;
}
var result = true;
var outputDir = Directory.CreateDirectory(ResourcesOutputDir).FullName;
uint curOffset = 0;
using (FileStream fsTable = new FileStream(Path.Combine(outputDir, DescriptorsTableFileName), FileMode.Create, FileAccess.Write))
using (FileStream fsImage = new FileStream(Path.Combine(outputDir, BitmapDataFileName), FileMode.Create, FileAccess.Write))
using (BinaryWriter bwTable = new BinaryWriter(fsTable))
using (BinaryWriter bwImage = new BinaryWriter(fsImage))
{
if (optimize)
{
var numBytesSaved = 0;
try
{
var images = files.Select(file =>
{
var img = new ImageData(file.Path);
var data = img.CompressImage();
return(new { Id = file.Identifier, Img = img, Data = data });
}).ToList();
var table = new TableEntry[images.Count];
for (int i = 0, j = 0; i < images.Count; i++)
{
var found = false;
var id = images[i].Id;
var img = images[i].Img;
var data = images[i].Data;
for (j = 0; j < i; j++)
{
var oimg = images[j].Img;
var odata = images[j].Data;
if (oimg.Width == img.Width && oimg.Height == img.Height && odata.SequenceEqual(data))
{
found = true;
break;
}
}
if (i == 0 || !found) // first or not found
{
var entry = new TableEntry(id, img.Width, img.Height, curOffset);
table[i] = entry;
entry.Write(bwTable);
for (int k = 0; k < data.Length; k++)
{
bwImage.Write(data[k]);
}
curOffset += (uint)(data.Length * 4);
}
else
{
var entry = new TableEntry(id, img.Width, img.Height, table[j].Offset);
table[i] = entry;
entry.Write(bwTable);
numBytesSaved += data.Length * 4;
}
}
Console.WriteLine($"Saved {numBytesSaved} bytes!");
}
catch (Exception ex)
{
Console.WriteLine($"ERROR! Failed to compress!{Environment.NewLine}{ex}");
result = false;
}
}
else
{
foreach (var file in files)
{
try
{
var img = new ImageData(file.Path);
var data = img.CompressImage();
new TableEntry(file.Identifier, img.Width, img.Height, curOffset).Write(bwTable);
for (int i = 0; i < data.Length; i++)
{
bwImage.Write(data[i]);
}
curOffset += (uint)(data.Length * 4);
}
catch (Exception ex)
{
Console.WriteLine($"ERROR! Failed to compress a file {file.Path}!{Environment.NewLine}{ex}");
result = false;
break;
}
}
}
}
if (!ignoreConstraits && curOffset >= MaxBitmapSize)
{
Console.WriteLine($"ERROR! Output file is too big {curOffset}, max {MaxBitmapSize} bytes!");
File.Delete(Path.Combine(outputDir, DescriptorsTableFileName));
File.Delete(Path.Combine(outputDir, BitmapDataFileName));
}
Console.WriteLine($"Encoding {(result ? "finished" : "failed")}");
}