Method loadFilterImage

processor/vipsprocessor/overlay.go:73–94

loadFilterImage runs the imagor pipeline for an image() filter using the image cache. Bypasses cache for unknown size, exceeds max dims, or requests that depend on original-space coordinates or per-request decode parameters (crop, focal, page, dpi).

(
	ctx context.Context, blob *imagor.Blob, params imagorpath.Params, load imagor.LoadFunc,
	url string,
)

// Bypasses cache for unknown size, exceeds max dims, or requests that depend on
// original-space coordinates or per-request decode parameters (crop, focal, page, dpi).
func (v *Processor) loadFilterImage(
	ctx context.Context, blob *imagor.Blob, params imagorpath.Params, load imagor.LoadFunc,
	url string,
) (*vips.Image, error) {
	sizeKnown := params.Width > 0 && params.Height > 0

	if v.cache == nil || blob == nil || !sizeKnown || imagorpath.HasCacheBypass(params) ||
		params.Width > v.CacheMaxWidth || params.Height > v.CacheMaxHeight {
		return v.loadAndProcess(ctx, blob, params, load)
	}

	memBlob, origBlob, err := v.loadOrCache(blob, url, 1, nil)
	if err != nil {
		return nil, err
	}

	if origBlob != nil || memBlob == nil {
		// Animated source or cache miss — run pipeline on original blob.
		return v.loadAndProcess(ctx, blob, params, load)
	}
	return v.loadAndProcess(ctx, memBlob, params, load)
}

// fullDimRegex matches a single dimension token: optionally a flip prefix -,
// then f or full, optionally followed by a negative integer offset