heif/heic

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, 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
+- Supports AVIF, BMP, Farbfeld, GIF, HEIF/HEIC, ICO/CUR, 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

@@ -8,6 +8,7 @@ require (
 	github.com/anthonynsimon/bild v0.14.0
 	github.com/ftrvxmtrx/tga v0.0.0-20150524081124-bd8e8d5be13a
 	github.com/gen2brain/avif v0.4.4
+	github.com/gen2brain/heic v0.4.5
 	github.com/gen2brain/jpegxl v0.4.5
 	github.com/gen2brain/webp v0.5.5
 	github.com/hullerob/go.farbfeld v0.0.0-20181222022525-3661193c725f

go.sum

@@ -8,6 +8,8 @@ github.com/ftrvxmtrx/tga v0.0.0-20150524081124-bd8e8d5be13a h1:eSqaRmdlZ9JsJ7JuW
 github.com/ftrvxmtrx/tga v0.0.0-20150524081124-bd8e8d5be13a/go.mod h1:US5WvgEHtG+BvWNNs6gk937h0QL2g2x+r7RH8m3g80Y=
 github.com/gen2brain/avif v0.4.4 h1:Ga/ss7qcWWQm2bxFpnjYjhJsNfZrWs5RsyklgFjKRSE=
 github.com/gen2brain/avif v0.4.4/go.mod h1:/XCaJcjZraQwKVhpu9aEd9aLOssYOawLvhMBtmHVGqk=
+github.com/gen2brain/heic v0.4.5 h1:Cq3hPu6wwlTJNv2t48ro3oWje54h82Q5pALeCBNgaSk=
+github.com/gen2brain/heic v0.4.5/go.mod h1:ECnpqbqLu0qSje4KSNWUUDK47UPXPzl80T27GWGEL5I=
 github.com/gen2brain/jpegxl v0.4.5 h1:TWpVEn5xkIfsswzkjHBArd0Cc9AE0tbjBSoa0jDsrbo=
 github.com/gen2brain/jpegxl v0.4.5/go.mod h1:4kWYJ18xCEuO2vzocYdGpeqNJ990/Gjy3uLMg5TBN6I=
 github.com/gen2brain/webp v0.5.5 h1:MvQR75yIPU/9nSqYT5h13k4URaJK3gf9tgz/ksRbyEg=

internal/builtins/heif.go

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

internal/codec/heif/heif.go

@@ -0,0 +1,80 @@
+package heif
+
+import (
+	"bytes"
+	"fmt"
+	"image"
+	"io"
+
+	"github.com/gen2brain/heic"
+
+	"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 "heif"
+}
+
+func (impl) Extensions() []string {
+	return []string{"heic", "heif"}
+}
+
+func (impl) CanEncode() bool {
+	return false
+}
+
+func (impl) Flags(flags []cli.Flag) []cli.Flag {
+	return flags
+}
+
+func (impl) Sniff(reader io.ReaderAt) (int, []byte, error) {
+	buf := make([]byte, 32)
+
+	n, err := reader.ReadAt(buf, 0)
+	if err != nil && err != io.EOF {
+		return 0, nil, err
+	}
+
+	buf = buf[:n]
+
+	if len(buf) < 12 {
+		return 0, nil, nil
+	}
+
+	if !bytes.Equal(buf[4:8], []byte("ftyp")) {
+		return 0, nil, nil
+	}
+
+	brands := [][]byte{
+		[]byte("heic"),
+		[]byte("heix"),
+		[]byte("hevc"),
+		[]byte("hevx"),
+		[]byte("mif1"),
+		[]byte("msf1"),
+	}
+
+	for _, b := range brands {
+		if bytes.Contains(buf[8:], b) {
+			return 90, buf[:n], nil
+		}
+	}
+
+	return 0, nil, nil
+}
+
+func (impl) Decode(reader io.Reader) (image.Image, error) {
+	return heic.Decode(reader)
+}
+
+func (impl) Encode(writer io.Writer, img image.Image, options opts.Common) error {
+	return fmt.Errorf("heif: encoding not supported")
+}