mirror of
https://github.com/DorkSquadRR/DorkNet.git
synced 2026-10-26 07:28:45 -07:00
Alexa
d471b418b9
Targets Rec Room 2020.03.10 client (also serves 2020.03.06).
Re-import after adding:
- DorkNet.ClientMod/dorknet-clientmod.json.template — config schema
the launcher's manifest-driven patcher renders into UserData/.
- tools/build-patcher-zip.ps1 — produces dorknet-clientpatch-{key}.zip
for v1-march-* Release uploads.
- .github/workflows/release.yml — on tag push publishes both
dorknet-server-march_2020_03_10-win-x64.zip and
dorknet-clientpatch-march_2020_03_10.zip as Release assets.
Same scrub rules as december; tools/build-patcher-zip.ps1 added to
the maintainer-side allow-list so it survives.
66 lines
2.9 KiB
C#
66 lines
2.9 KiB
C#
using SkiaSharp;
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namespace DorkNet.Server.Services;
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/// <summary>
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/// img.* CDN transforms. The 2020 watch posts a full-frame capture
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/// (e.g. the avatar standing in their dorm) and then re-requests the
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/// same blob with <c>?cropSquare=1&width=256</c> on the profile
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/// thumbnail surface. We honour <c>cropSquare</c> server-side so the
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/// profile pic is face-zoomed, but we deliberately ignore the watch's
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/// <c>width=256</c> hint and return the cropped image at the source's
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/// native resolution: the watch's UI renders the same blob across
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/// multiple sizes (small thumb chip and the big profile frame), and a
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/// pre-shrunk 256² source gets stretched across a ~500px UI element and
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/// looks blurry. Keeping the source resolution lets the watch's image
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/// pipeline downsample for display without losing detail.
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/// </summary>
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public static class ImageTransformService
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{
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public readonly record struct Result(byte[] Bytes, string ContentType);
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public static Result? TryTransform(
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byte[] sourceBytes,
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string sourceContentType,
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bool cropSquare,
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int? widthHint)
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{
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// widthHint is intentionally unused — see class comment. Kept on the
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// signature so the controller can pass the parsed value without the
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// call site having to know which params we currently respect.
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_ = widthHint;
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if (!cropSquare) return null;
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if (sourceBytes.Length == 0) return null;
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using var input = SKBitmap.Decode(sourceBytes);
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if (input is null) return null;
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if (input.Width == input.Height) return null; // already square, pass through
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using var cropped = CenterCropSquare(input);
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using var image = SKImage.FromBitmap(cropped);
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// Re-encode in the same family the source advertised, so an uploaded
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// JPEG stays JPEG (size budget for profile pic round-trips) and
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// anything PNG-shaped stays PNG (alpha preserved for UI overlays).
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var (format, contentType, quality) = sourceContentType switch
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{
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"image/jpeg" or "image/jpg" => (SKEncodedImageFormat.Jpeg, "image/jpeg", 92),
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"image/webp" => (SKEncodedImageFormat.Webp, "image/webp", 92),
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_ => (SKEncodedImageFormat.Png, "image/png", 100),
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};
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using var encoded = image.Encode(format, quality);
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return new Result(encoded.ToArray(), contentType);
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}
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private static SKBitmap CenterCropSquare(SKBitmap input)
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{
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var side = Math.Min(input.Width, input.Height);
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var x = (input.Width - side) / 2;
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var y = (input.Height - side) / 2;
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var dst = new SKBitmap(new SKImageInfo(side, side, input.ColorType, input.AlphaType));
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using var canvas = new SKCanvas(dst);
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canvas.DrawBitmap(input, new SKRect(x, y, x + side, y + side), new SKRect(0, 0, side, side));
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return dst;
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}
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}
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