0212d089ec
- photos: generates a downscaled JPEG thumbnail per image, because serving a folder of 12-megapixel originals to a grid is unusable on a TV box. Uses CatmullRom scaling via golang.org/x/image; decodes jpeg/png/gif/webp. - an undecodable format returns no thumbnail rather than an error, so the grid falls back to a placeholder. - images already smaller than the 512px ceiling are passed through untouched. - library items endpoint now returns library_id, which the viewer needs to find its siblings for navigation. - web: PhotoViewer with keyboard and button navigation within the library. Verified: 900x1200 PNG thumbnailed to a 512-long-edge JPEG and served; unit tests assert exact dimensions, aspect preservation, and that non-images produce no thumbnail without erroring.
12 lines
242 B
Go
12 lines
242 B
Go
package photos
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import (
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"image"
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"image/jpeg"
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"io"
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)
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// encodeJPEG writes an image as JPEG at a quality suited to thumbnails.
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func encodeJPEG(w io.Writer, img image.Image) error {
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return jpeg.Encode(w, img, &jpeg.Options{Quality: 82})
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}
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