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[backend/core] Improve image processing performance

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This commit is contained in:
Laura Hausmann 2024-02-28 21:48:33 +01:00
parent f4b985b0a8
commit b4e3fdc898
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GPG key ID: D044E84C5BE01605
1 changed files with 20 additions and 9 deletions
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29
Iceshrimp.Backend/Core/Services/DriveService.cs
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@ -132,7 +132,11 @@ public class DriveService(
try
{
var image = await Image.LoadAsync<Rgba32>(buf);
blurhash = Blurhasher.Encode(image, 7, 7);
// Calculate blurhash using a x200px image for improved performance
var blurhashImage = image.Clone();
blurhashImage.Mutate(p => p.Resize(image.Width > image.Height ? new Size(200, 0) : new Size(0, 200)));
blurhash = Blurhasher.Encode(blurhashImage, 7, 7);
// Correct mime type
if (request.MimeType == "image" && image.Metadata.DecodedImageFormat?.DefaultMimeType != null)
@ -144,11 +148,14 @@ public class DriveService(
{
// Generate thumbnail
var thumbnailImage = image.Clone();
if (image.Size.Width > 1000)
thumbnailImage.Mutate(p => p.Resize(new Size(1000, 0)));
if (Math.Max(image.Size.Width, image.Size.Height) > 1000)
thumbnailImage.Mutate(p => p.Resize(image.Width > image.Height
? new Size(1000, 0)
: new Size(0, 1000)));
thumbnail = new MemoryStream();
await thumbnailImage.SaveAsWebpAsync(thumbnail);
var thumbEncoder = new WebpEncoder { Quality = 75, FileFormat = WebpFileFormatType.Lossy };
await thumbnailImage.SaveAsWebpAsync(thumbnail, thumbEncoder);
thumbnail.Seek(0, SeekOrigin.Begin);
// Generate webpublic for local users
@ -157,12 +164,16 @@ public class DriveService(
var webpublicImage = image.Clone();
webpublicImage.Metadata.ExifProfile = null;
webpublicImage.Metadata.XmpProfile = null;
if (image.Size.Width > 2048)
webpublicImage.Mutate(p => p.Resize(new Size(2048, 0)));
if (Math.Max(image.Size.Width, image.Size.Height) > 2048)
webpublicImage.Mutate(p => p.Resize(image.Width > image.Height
? new Size(2048, 0)
: new Size(0, 2048)));
var encoder = request.MimeType == "image/png"
? new WebpEncoder { Quality = 100, NearLossless = true, NearLosslessQuality = 60 }
: new WebpEncoder { Quality = 75 };
var encoder = new WebpEncoder
{
Quality = request.MimeType == "image/png" ? 100 : 75,
FileFormat = WebpFileFormatType.Lossy
};
webpublic = new MemoryStream();
await webpublicImage.SaveAsWebpAsync(webpublic, encoder);