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feat : put back the original logic, the streaming mechanism didn't produce a result as expected

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gelaws-hub 2025-08-01 21:11:23 +07:00
parent 8b033d0725
commit dd9f0d9cbe
3 changed files with 9 additions and 164 deletions
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83
Services/Utilities/FastStitchProcessor.cs
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@ -1,83 +0,0 @@
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
using SixLabors.ImageSharp.Processing;
using StitcherApi.Services.Utilities;
namespace StitcherApi.Services.Fast;
public class FastProcessor
{
private readonly string _assetPath;
private readonly ILogger<FastProcessor> _logger;
private const int TILE_SIZE = 720;
public FastProcessor(string assetPath, ILogger<FastProcessor> logger)
{
_assetPath = assetPath;
_logger = logger;
}
public async Task<byte[]> ProcessAsync(StitchRequest stitchRequest)
{
using Image<Rgba32> finalImage = new(stitchRequest.CropW, stitchRequest.CropH);
for (int r = stitchRequest.StartTileRow; r <= stitchRequest.EndTileRow; r++)
{
for (int c = stitchRequest.StartTileCol; c <= stitchRequest.EndTileCol; c++)
{
string tileFileName = TileHelper.GetTileFileName(r, c);
string tileFilePath = Path.Combine(_assetPath, tileFileName);
if (!File.Exists(tileFilePath))
{
throw new FileNotFoundException($"Asset not found: {tileFileName}");
}
using Image<Rgba32> tileImage = await Image.LoadAsync<Rgba32>(tileFilePath);
int tileOriginX = (c - stitchRequest.MinCol) * TILE_SIZE;
int tileOriginY = (r - stitchRequest.MinRow) * TILE_SIZE;
int srcX = Math.Max(0, stitchRequest.CropX - tileOriginX);
int srcY = Math.Max(0, stitchRequest.CropY - tileOriginY);
int destX = Math.Max(0, tileOriginX - stitchRequest.CropX);
int destY = Math.Max(0, tileOriginY - stitchRequest.CropY);
int overlapW = Math.Max(
0,
Math.Min(stitchRequest.CropX + stitchRequest.CropW, tileOriginX + TILE_SIZE)
- Math.Max(stitchRequest.CropX, tileOriginX)
);
int overlapH = Math.Max(
0,
Math.Min(stitchRequest.CropY + stitchRequest.CropH, tileOriginY + TILE_SIZE)
- Math.Max(stitchRequest.CropY, tileOriginY)
);
if (overlapW > 0 && overlapH > 0)
{
Rectangle sourceRect = new Rectangle(srcX, srcY, overlapW, overlapH);
finalImage.Mutate(ctx =>
ctx.DrawImage(
tileImage,
new Point(destX, destY),
sourceRect,
new GraphicsOptions()
)
);
}
}
}
if (stitchRequest.OutputScale > 0 && stitchRequest.OutputScale < 1.0)
{
int newWidth = (int)(stitchRequest.CropW * stitchRequest.OutputScale);
int newHeight = (int)(stitchRequest.CropH * stitchRequest.OutputScale);
finalImage.Mutate(x => x.Resize(newWidth, newHeight, KnownResamplers.Bicubic));
}
using MemoryStream memoryStream = new MemoryStream();
await finalImage.SaveAsPngAsync(memoryStream);
return memoryStream.ToArray();
}
}