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optimize

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This commit is contained in:
Frederica Bernkastel 2023-12-30 04:01:40 +06:00
parent 824ea431de
commit 741f50619e
1 changed files with 28 additions and 34 deletions
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62
ArcFormats/Interheart/ImageKG.cs
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@ -41,6 +41,7 @@ namespace GameRes.Formats.Interheart
public override string Tag { get { return "KG"; } }
public override string Description { get { return "Interheart image format"; } }
public override uint Signature { get { return 0x4B474347; } } // 'GCGK'
public override bool CanWrite { get { return true; } }
public override ImageMetaData ReadMetaData (IBinaryStream stream)
{
@ -99,58 +100,52 @@ namespace GameRes.Formats.Interheart
}
public override void Write (Stream file, ImageData image) {
//var watch = System.Diagnostics.Stopwatch.StartNew();
var bitmap = image.Bitmap;
if (bitmap.Format != PixelFormats.Bgra32) {
bitmap = new FormatConvertedBitmap(image.Bitmap, PixelFormats.Bgra32, null, 0);
int stride = (int)image.Width * 4;
byte[] bitmap = new byte[stride * image.Height];
{
var image_bgra = image.Bitmap.Format != PixelFormats.Bgra32
? new FormatConvertedBitmap(image.Bitmap, PixelFormats.Bgra32, null, 0)
: image.Bitmap;
image_bgra.CopyPixels(bitmap, stride, 0);
}
uint[] offset_table = new uint[image.Height];
var kg_data = new List<byte>();
byte[] row_data = new byte[image.Width * 4];
for (int y = 0; y < image.Height; y++)
{
for (int y = 0; y < image.Height; y++) {
offset_table[y] = (uint)kg_data.Count();
Int32Rect rect = new Int32Rect(0, y, (int)image.Width, 1);
bitmap.CopyPixels(rect, row_data, (int)image.Width * 4, 0);
row_data
bitmap
.AsMemory()
.Slice(y * stride, stride)
.Chunk(4)
//.TakeWhile(x => x.Count() > 0)
.Aggregate(new List<(byte alpha, List<List<byte>> data)> { }, (acc, v) => {
void add_chunk (byte alpha, List<byte> data) => acc.Add((alpha, data: new List<List<byte>> { data }));
.Aggregate(new List<(byte alpha, List<byte[]> data)> { }, (chunks, x) => {
var pixel = x.ToArray();
void new_chunk () => chunks.Add((alpha: pixel[3], data: new List<byte[]> { pixel }));
if (!acc.Any()) {
add_chunk(v.Last(), v.ToList());
if (!chunks.Any()) {
new_chunk();
}
else {
var (alpha, data) = acc.Last();
if (v.Last() != data.Last().Last() || data.Count >= 256 ) {
add_chunk(v.Last(), v.ToList());
var (alpha, data) = chunks.Last();
if (pixel[3] != data.Last()[3] || data.Count >= 256) {
new_chunk();
}
else {
data.Add(v.ToList());
data.Add(pixel);
}
}
return acc;
return chunks;
}
)
.ForEach(chunk => {
kg_data.Add(chunk.alpha);
kg_data.Add((byte)chunk.data.Count());
if (chunk.alpha > 0) {
var pixels = chunk.data
.SelectMany(pixel => new[] { pixel.ElementAt(2), pixel.ElementAt(1), pixel.ElementAt(0) })
.ToList();
kg_data.AddRange(pixels);
kg_data.AddRange(chunk.data.SelectMany(p => new[] { p[2], p[1], p[0] }));
}
});
}
//watch.Stop();
//var elapsedMs = watch.ElapsedMilliseconds;
//Console.WriteLine(elapsedMs.ToString() + "ms");
var bw = new BinaryWriter(file);
@ -169,12 +164,11 @@ namespace GameRes.Formats.Interheart
}
}
// Polyfill, remove when tagerting .NET >= 6.0
static class Extensions {
public static IEnumerable<IEnumerable<T>> Chunk<T>(this IEnumerable<T> arr, int size) {
for (var i = 0; i < arr.Count() / size + 1; i++) {
if (i * size < arr.Count()) {
yield return arr.Skip(i * size).Take(size);
public static IEnumerable<Memory<T>> Chunk<T>(this Memory<T> arr, int size) {
for (var i = 0; i < arr.Length / size + 1; i++) {
if (i * size < arr.Length) {
yield return arr.Slice(i * size, size);
}
}
}