45 lines
1.0 KiB
Go
45 lines
1.0 KiB
Go
// License: GPLv3 Copyright: 2022, Kovid Goyal, <kovid at kovidgoyal.net>
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package images
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import (
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"fmt"
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"image"
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"image/gif"
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"image/jpeg"
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"image/png"
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"io"
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"golang.org/x/image/bmp"
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"golang.org/x/image/tiff"
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_ "golang.org/x/image/webp"
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)
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var _ = fmt.Print
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var DecodableImageTypes = map[string]bool{
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"image/jpeg": true, "image/png": true, "image/bmp": true, "image/tiff": true, "image/webp": true, "image/gif": true,
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}
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var EncodableImageTypes = map[string]bool{
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"image/jpeg": true, "image/png": true, "image/bmp": true, "image/tiff": true, "image/gif": true,
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}
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func Encode(output io.Writer, img image.Image, format_mime string) (err error) {
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switch format_mime {
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case "image/png":
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return png.Encode(output, img)
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case "image/jpeg":
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return jpeg.Encode(output, img, nil)
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case "image/bmp":
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return bmp.Encode(output, img)
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case "image/gif":
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return gif.Encode(output, img, nil)
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case "image/tiff":
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return tiff.Encode(output, img, nil)
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}
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err = fmt.Errorf("Unsupported output image MIME type %s", format_mime)
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return
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}
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