farbfeld

internal/builtins/farbfeld.go

@@ -0,0 +1,8 @@
+//go:build farbfeld || core || full
+// +build farbfeld core full
+
+package builtins
+
+import (
+	_ "github.com/coalaura/ffwebp/internal/codec/farbfeld"
+)

internal/codec/farbfeld/farbfeld.go

@@ -0,0 +1,57 @@
+package farbfeld
+
+import (
+	"bytes"
+	"image"
+	"io"
+
+	farbfeld "github.com/hullerob/go.farbfeld"
+
+	"github.com/coalaura/ffwebp/internal/codec"
+	"github.com/coalaura/ffwebp/internal/opts"
+	"github.com/urfave/cli/v3"
+)
+
+func init() {
+	codec.Register(impl{})
+}
+
+type impl struct{}
+
+func (impl) String() string {
+	return "farbfeld"
+}
+
+func (impl) Extensions() []string {
+	return []string{"farbfeld", "ff"}
+}
+
+func (impl) CanEncode() bool {
+	return true
+}
+
+func (impl) Flags(flags []cli.Flag) []cli.Flag {
+	return flags
+}
+
+func (impl) Sniff(reader io.ReaderAt) (int, []byte, error) {
+	buf := make([]byte, 8)
+
+	if _, err := reader.ReadAt(buf, 0); err != nil {
+		return 0, nil, err
+	}
+
+	if bytes.Equal(buf, []byte("farbfeld")) {
+		return 100, buf, nil
+	}
+
+	return 0, nil, nil
+}
+
+func (impl) Decode(reader io.Reader) (image.Image, error) {
+	return farbfeld.Decode(reader)
+}
+
+func (impl) Encode(writer io.Writer, img image.Image, _ opts.Common) error {
+	return farbfeld.Encode(writer, img)
+}