51 lines
936 B
Go
51 lines
936 B
Go
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package utio
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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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// JPEG creates a JPEG encoder/decoder for m, m is only required for encoding.
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func JPEG(m image.Image) Imager {
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return JPEGOpts(m, 95)
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}
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func JPEGOpts(m image.Image, quality int) Imager {
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return &jpeger{imager{m}, quality}
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}
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type jpeger struct {
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imager
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quality int
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}
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func (j *jpeger) Encode(w io.Writer) error {
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return jpeg.Encode(w, j.m, &jpeg.Options{Quality: j.quality})
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}
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func (j *jpeger) Decode(r io.Reader) error {
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var m, err = jpeg.Decode(r)
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if nil != err {
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return err
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}
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j.m = m
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return nil
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}
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// LoadJPEG loads a JPEG image from the supplied path.
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func LoadJPEG(path string) (image.Image, error) {
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var j = JPEG(nil)
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var err = DecodeFile(path, j)
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if nil != err {
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return nil, err
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}
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return j.Image(), nil
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}
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// SaveJPEG writes an image as JPEG to the supplied path.
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func SaveJPEG(path string, m image.Image) error {
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return EncodeFile(path, JPEG(m))
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}
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