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30 lines
778 B
Go
30 lines
778 B
Go
//go:build enable_vips
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package preprocessor
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import (
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"io"
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vips "github.com/davidbyttow/govips/v2/vips"
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"github.com/kovidgoyal/imaging"
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"github.com/pkg/errors"
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)
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func init() {
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vips.LoggingSettings(nil, vips.LogLevelError)
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}
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// ImageDecoder is a converter for the image file. It decodes with imaging so the
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// downstream encode step always receives an image.Image (the vips-backed
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// encoder re-wraps it into libvips itself). Returning a *vips.ImageRef here
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// would leak a C image past the workflow's ownership boundary.
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type ImageDecoder struct{}
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func (i ImageDecoder) Convert(r io.Reader) (any, error) {
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img, err := imaging.Decode(r, imaging.AutoOrientation(true))
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if err != nil {
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return nil, errors.Wrap(err, `could not decode the image`)
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}
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return img, nil
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}
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