farbfeld

README.md

@@ -6,7 +6,7 @@ FFWebP is a small, single-binary CLI for converting images between formats, thin
 
 - Single binary: no external tools required
 - Auto-detects input codec and infers output from the file extension
-- Supports AVIF, BMP, GIF, ICO, JPEG, JPEG XL, PCX, PNG, PNM (PBM/PGM/PPM/PAM), PSD (decode-only), QOI, SVG (decode-only), TGA, TIFF, WebP, and XBM
+- Supports AVIF, BMP, Farbfeld, GIF, ICO, JPEG, JPEG XL, PCX, PNG, PNM (PBM/PGM/PPM/PAM), PSD (decode-only), QOI, SVG (decode-only), TGA, TIFF, WebP, and XBM
 - Lossy or lossless output with configurable quality
 - Thumbnail generation via Lanczos3 resampling
 - Per-codec flags for fine-grained control (see `ffwebp --help`)

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/gen2brain/avif v0.4.4
 	github.com/gen2brain/jpegxl v0.4.5
 	github.com/gen2brain/webp v0.5.5
+	github.com/hullerob/go.farbfeld v0.0.0-20181222022525-3661193c725f
 	github.com/knieriem/g v0.5.0
 	github.com/kriticalflare/qoi v0.0.0-20240815192827-34f66f23bcef
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646

go.sum

@@ -14,6 +14,8 @@ github.com/gen2brain/webp v0.5.5 h1:MvQR75yIPU/9nSqYT5h13k4URaJK3gf9tgz/ksRbyEg=
 github.com/gen2brain/webp v0.5.5/go.mod h1:xOSMzp4aROt2KFW++9qcK/RBTOVC2S9tJG66ip/9Oc0=
 github.com/gopherjs/gopherjs v1.17.2 h1:fQnZVsXk8uxXIStYb0N4bGk7jeyTalG/wsZjQ25dO0g=
 github.com/gopherjs/gopherjs v1.17.2/go.mod h1:pRRIvn/QzFLrKfvEz3qUuEhtE/zLCWfreZ6J5gM2i+k=
+github.com/hullerob/go.farbfeld v0.0.0-20181222022525-3661193c725f h1:1LkiAnH6RhOEbQAcfcEcixM5IsegqFi6IH0Nz0ZGqYs=
+github.com/hullerob/go.farbfeld v0.0.0-20181222022525-3661193c725f/go.mod h1:mQEoc766DxPTAwQ54neWTK/lFqIeSO7OU6bqZsceglw=
 github.com/knieriem/g v0.5.0 h1:0WGfg4rfLD70T5e3SLZ9HtmmLQlRPChoKG15B3dfyqI=
 github.com/knieriem/g v0.5.0/go.mod h1:fhVCOebbqbZTIN+bv0aU/gOAasuZlP0ETeaF4N2553A=
 github.com/kriticalflare/qoi v0.0.0-20240815192827-34f66f23bcef h1:XHb/eK43B8XuqAO5jHILCXzZP3pBamGmn5PcGjTZTuE=

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)
+}