now palette project lays here

pkg/dithering/cmd/jpg2png.go

@@ -0,0 +1,20 @@
+//go:build ignore
+
+package main
+
+import (
+	"image/jpeg"
+	"image/png"
+	"os"
+)
+
+func main() {
+	img, err := jpeg.Decode(os.Stdin)
+	if err != nil {
+		panic(err)
+	}
+	err = png.Encode(os.Stdout, img)
+	if err != nil {
+		panic(err)
+	}
+}

pkg/dithering/cmd/main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"image"
+
 	"git.nkpl.cc/twocookedfaggots/imageutils/pkg/dithering"
 	"git.nkpl.cc/twocookedfaggots/imageutils/util"
 )

util/hex.go

@@ -1,9 +1,9 @@
-package imageutils
+package util
 
 import (
+	"errors"
 	"fmt"
 	"image/color"
-	"errors"
 )
 
 var ParseHexColorErr = errors.New("invalid length, must be 7 or 4")

util/hex_test.go

@@ -1,4 +1,4 @@
-package imageutils
+package util
 
 import (
 	"fmt"

util/stdio.go

@@ -1,8 +1,14 @@
-package imageutils
+package util
+
+import (
+	"image"
+	"image/png"
+	"os"
+)
 
 // ProcessImage takes input png image from stdin, processes it with f and outputs it to stdout.
-func ProcessStdio(f func(image.Image) image.Image) {
-      	img, err := png.Decode(os.Stdin)
+func ProcessStdio(f func(image.Image) image.Image) error {
+	img, err := png.Decode(os.Stdin)
 	if err != nil {
 		return err
 	}