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Use pngn instead of image/png

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This commit is contained in:
Milan Nikolic
2026-08-25 12:24:13 +02:00
parent 5d87cd59b6
commit ed6d60ea72
7 changed files with 28 additions and 101 deletions
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cbconvert_convert.go
+11 -2
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@@ -6,7 +6,6 @@ import (
"context"
"fmt"
"image"
"image/png"
"io"
"os"
"path/filepath"
@@ -18,6 +17,7 @@ import (
"github.com/gen2brain/gav1d/avif"
"github.com/gen2brain/jpegn"
"github.com/gen2brain/jxl"
"github.com/gen2brain/pngn"
"github.com/gen2brain/vpx/webp"
"github.com/jsummers/gobmp"
"github.com/mholt/archives"
@@ -401,6 +401,15 @@ func (c *Converter) imageDecode(reader io.Reader) (image.Image, error) {
return img, nil
}
if magic, err := br.Peek(8); err == nil && string(magic) == "\x89PNG\r\n\x1a\n" {
img, err := pngn.Decode(br)
if err != nil {
return nil, fmt.Errorf("imageDecode: %w", err)
}
return img, nil
}
img, _, err := image.Decode(br)
if err != nil {
return img, fmt.Errorf("imageDecode: %w", err)
@@ -426,7 +435,7 @@ func (c *Converter) imageEncode(img image.Image, w io.Writer) error {
switch c.Opts.Format {
case "png":
err = png.Encode(w, img)
err = pngn.Encode(w, img)
case "tiff":
err = tiff.Encode(w, img, &tiff.Options{Compression: tiff.Uncompressed})
case "jpeg":