Switch to pure Go JPEG, WEBP, AVIF and JXL codecs

cmd/cbconvert-gui/i18n/i18n_cs.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Rychlost",
 		EffortEffort:  "Úsilí",
 		TipEffortWebp: "Metoda WEBP, vyšší je lepší/pomalejší (0-6, výchozí 4)",
-		TipEffortAvif: "Rychlost AVIF, vyšší je rychlejší/horší (0-10, výchozí 10)",
-		TipEffortJxl:  "Úsilí JXL, vyšší je lepší/pomalejší (1-10, výchozí 7)",
+		TipEffortAvif: "Rychlost AVIF, vyšší je rychlejší/horší (0-10, výchozí 6)",
+		TipEffortJxl:  "Úsilí JXL, vyšší je lepší/pomalejší (1-7, výchozí 7)",
 
 		BtnAddFiles:  "Přidat &soubory...",
 		BtnAddDir:    "Přidat &adresář...",

cmd/cbconvert-gui/i18n/i18n_de.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Geschwindigkeit",
 		EffortEffort:  "Aufwand",
 		TipEffortWebp: "WEBP-Methode, höher ist besser/langsamer (0-6, Standard 4)",
-		TipEffortAvif: "AVIF-Geschwindigkeit, höher ist schneller/schlechter (0-10, Standard 10)",
-		TipEffortJxl:  "JXL-Aufwand, höher ist besser/langsamer (1-10, Standard 7)",
+		TipEffortAvif: "AVIF-Geschwindigkeit, höher ist schneller/schlechter (0-10, Standard 6)",
+		TipEffortJxl:  "JXL-Aufwand, höher ist besser/langsamer (1-7, Standard 7)",
 
 		BtnAddFiles:  "&Dateien hinzufügen...",
 		BtnAddDir:    "&Verzeichnis hinzufügen...",

cmd/cbconvert-gui/i18n/i18n_en.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Speed",
 		EffortEffort:  "Effort",
 		TipEffortWebp: "WEBP method, higher is better/slower (0-6, default 4)",
-		TipEffortAvif: "AVIF speed, higher is faster/worse (0-10, default 10)",
-		TipEffortJxl:  "JXL effort, higher is better/slower (1-10, default 7)",
+		TipEffortAvif: "AVIF speed, higher is faster/worse (0-10, default 6)",
+		TipEffortJxl:  "JXL effort, higher is better/slower (1-7, default 7)",
 
 		BtnAddFiles:  "Add &Files...",
 		BtnAddDir:    "Add &Dir...",

cmd/cbconvert-gui/i18n/i18n_es.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Velocidad",
 		EffortEffort:  "Esfuerzo",
 		TipEffortWebp: "Método WEBP, más alto es mejor/más lento (0-6, predeterminado 4)",
-		TipEffortAvif: "Velocidad AVIF, más alto es más rápido/peor (0-10, predeterminado 10)",
-		TipEffortJxl:  "Esfuerzo JXL, más alto es mejor/más lento (1-10, predeterminado 7)",
+		TipEffortAvif: "Velocidad AVIF, más alto es más rápido/peor (0-10, predeterminado 6)",
+		TipEffortJxl:  "Esfuerzo JXL, más alto es mejor/más lento (1-7, predeterminado 7)",
 
 		BtnAddFiles:  "Añadir &archivos...",
 		BtnAddDir:    "Añadir &directorio...",

cmd/cbconvert-gui/i18n/i18n_fr.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Vitesse",
 		EffortEffort:  "Effort",
 		TipEffortWebp: "Méthode WEBP, plus élevé est meilleur/plus lent (0-6, défaut 4)",
-		TipEffortAvif: "Vitesse AVIF, plus élevé est plus rapide/moins bon (0-10, défaut 10)",
-		TipEffortJxl:  "Effort JXL, plus élevé est meilleur/plus lent (1-10, défaut 7)",
+		TipEffortAvif: "Vitesse AVIF, plus élevé est plus rapide/moins bon (0-10, défaut 6)",
+		TipEffortJxl:  "Effort JXL, plus élevé est meilleur/plus lent (1-7, défaut 7)",
 
 		BtnAddFiles:  "Ajouter des &fichiers...",
 		BtnAddDir:    "Ajouter un &dossier...",

cmd/cbconvert-gui/i18n/i18n_it.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Velocità",
 		EffortEffort:  "Sforzo",
 		TipEffortWebp: "Metodo WEBP, più alto è migliore/più lento (0-6, predefinito 4)",
-		TipEffortAvif: "Velocità AVIF, più alto è più veloce/peggiore (0-10, predefinito 10)",
-		TipEffortJxl:  "Sforzo JXL, più alto è migliore/più lento (1-10, predefinito 7)",
+		TipEffortAvif: "Velocità AVIF, più alto è più veloce/peggiore (0-10, predefinito 6)",
+		TipEffortJxl:  "Sforzo JXL, più alto è migliore/più lento (1-7, predefinito 7)",
 
 		BtnAddFiles:  "Aggiungi &file...",
 		BtnAddDir:    "Aggiungi &cartella...",

cmd/cbconvert-gui/i18n/i18n_ja.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "速度",
 		EffortEffort:  "労力",
 		TipEffortWebp: "WEBP 方式、高いほど高品質/低速（0-6、既定 4）",
-		TipEffortAvif: "AVIF 速度、高いほど高速/低品質（0-10、既定 10）",
-		TipEffortJxl:  "JXL 労力、高いほど高品質/低速（1-10、既定 7）",
+		TipEffortAvif: "AVIF 速度、高いほど高速/低品質（0-10、既定 6）",
+		TipEffortJxl:  "JXL 労力、高いほど高品質/低速（1-7、既定 7）",
 
 		BtnAddFiles:  "ファイルを追加(&F)...",
 		BtnAddDir:    "ディレクトリを追加(&D)...",

cmd/cbconvert-gui/i18n/i18n_pt.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Velocidade",
 		EffortEffort:  "Esforço",
 		TipEffortWebp: "Método WEBP, mais alto é melhor/mais lento (0-6, padrão 4)",
-		TipEffortAvif: "Velocidade AVIF, mais alto é mais rápido/pior (0-10, padrão 10)",
-		TipEffortJxl:  "Esforço JXL, mais alto é melhor/mais lento (1-10, padrão 7)",
+		TipEffortAvif: "Velocidade AVIF, mais alto é mais rápido/pior (0-10, padrão 6)",
+		TipEffortJxl:  "Esforço JXL, mais alto é melhor/mais lento (1-7, padrão 7)",
 
 		BtnAddFiles:  "Adicionar &arquivos...",
 		BtnAddDir:    "Adicionar &diretório...",

cmd/cbconvert-gui/i18n/i18n_ru.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "Скорость",
 		EffortEffort:  "Усилие",
 		TipEffortWebp: "Метод WEBP, выше — лучше/медленнее (0-6, по умолчанию 4)",
-		TipEffortAvif: "Скорость AVIF, выше — быстрее/хуже (0-10, по умолчанию 10)",
-		TipEffortJxl:  "Усилие JXL, выше — лучше/медленнее (1-10, по умолчанию 7)",
+		TipEffortAvif: "Скорость AVIF, выше — быстрее/хуже (0-10, по умолчанию 6)",
+		TipEffortJxl:  "Усилие JXL, выше — лучше/медленнее (1-7, по умолчанию 7)",
 
 		BtnAddFiles:  "Добавить &файлы...",
 		BtnAddDir:    "Добавить &каталог...",

cmd/cbconvert-gui/i18n/i18n_zh.go

@@ -74,8 +74,8 @@ func init() {
 		EffortSpeed:   "速度",
 		EffortEffort:  "强度",
 		TipEffortWebp: "WEBP 方法，越高越好/越慢（0-6，默认 4）",
-		TipEffortAvif: "AVIF 速度，越高越快/越差（0-10，默认 10）",
-		TipEffortJxl:  "JXL 强度，越高越好/越慢（1-10，默认 7）",
+		TipEffortAvif: "AVIF 速度，越高越快/越差（0-10，默认 6）",
+		TipEffortJxl:  "JXL 强度，越高越好/越慢（1-7，默认 7）",
 
 		BtnAddFiles:  "添加文件(&F)...",
 		BtnAddDir:    "添加目录(&D)...",

cmd/cbconvert-gui/state.go

@@ -1,38 +1,12 @@
 package main
 
 import (
-	"runtime/debug"
-	"strings"
-
 	"github.com/gen2brain/cbconvert/cmd/cbconvert-gui/i18n"
 	"github.com/gen2brain/iup-go/iup"
 )
 
-// jxlLosslessBuild reports whether wasm2go and nodynamic leave zune-jpegxl (lossless-only) as the only jxl encoder.
-var jxlLosslessBuild = func() bool {
-	info, ok := debug.ReadBuildInfo()
-	if !ok {
-		return false
-	}
-	var wasm2go, nodynamic bool
-	for _, kv := range info.Settings {
-		if kv.Key != "-tags" {
-			continue
-		}
-		for _, t := range strings.Split(kv.Value, ",") {
-			switch t {
-			case "wasm2go":
-				wasm2go = true
-			case "nodynamic":
-				nodynamic = true
-			}
-		}
-	}
-	return wasm2go && nodynamic
-}()
-
-// userLossless is the user's Lossless preference, tracked separately because a jxl
-// wasm2go build force-sets the widget on.
+// userLossless is the user's Lossless preference, kept so switching to a format
+// without lossless support and back does not clear it.
 var userLossless bool
 
 func setActive() {
@@ -98,15 +72,13 @@ func setActive() {
 	}
 
 	canLossless := opts.Format == "webp" || opts.Format == "avif" || opts.Format == "jxl"
-	jxlLossless := jxlLosslessBuild && opts.Format == "jxl"
 
-	// jxl wasm2go forces lossless on; otherwise show the user's preference so it doesn't stay stuck on.
 	losslessVal := "OFF"
-	if jxlLossless || userLossless {
+	if userLossless {
 		losslessVal = "ON"
 	}
 	iup.GetHandle("Lossless").SetAttribute("VALUE", losslessVal)
-	losslessOn := jxlLossless || (canLossless && userLossless)
+	losslessOn := canLossless && userLossless
 
 	if (opts.Format == "jpeg" || canLossless) && !opts.NoConvert && !losslessOn {
 		iup.GetHandle("VboxQuality").SetAttribute("ACTIVE", "YES")
@@ -122,11 +94,6 @@ func setActive() {
 		iup.GetHandle("Lossless").SetAttribute("ACTIVE", "NO")
 	}
 
-	if jxlLossless {
-		iup.GetHandle("Lossless").SetAttribute("ACTIVE", "NO")
-		iup.GetHandle("VboxEffort").SetAttribute("ACTIVE", "NO")
-	}
-
 	if opts.Width != 0 && opts.Height != 0 && !opts.NoConvert {
 		iup.GetHandle("Fit").SetAttribute("ACTIVE", "YES")
 	} else {

cmd/cbconvert-gui/widgets.go

@@ -25,11 +25,11 @@ func setEffort(format string) {
 		val.SetAttribute("TIP", i18n.Lng(i18n.TipEffortWebp))
 		name = i18n.Str(i18n.EffortMethod)
 	case "avif":
-		val.SetAttributes("MIN=0, MAX=10, SHOWTICKS=11, VALUE=10")
+		val.SetAttributes("MIN=0, MAX=10, SHOWTICKS=11, VALUE=6")
 		val.SetAttribute("TIP", i18n.Lng(i18n.TipEffortAvif))
 		name = i18n.Str(i18n.EffortSpeed)
 	case "jxl":
-		val.SetAttributes("MIN=1, MAX=10, SHOWTICKS=10, VALUE=7")
+		val.SetAttributes("MIN=1, MAX=7, SHOWTICKS=7, VALUE=7")
 		val.SetAttribute("TIP", i18n.Lng(i18n.TipEffortJxl))
 		name = i18n.Str(i18n.EffortEffort)
 	default:

cmd/cbconvert/main.go

@@ -221,7 +221,7 @@ func parseFlags() (cbconvert.Options, []string) {
 	convert.StringVar(&opts.Archive, "archive", base.Archive, "Archive format, valid values are zip, tar")
 	convert.IntVar(&opts.ZipLevel, "zip-level", base.ZipLevel, "ZIP compression level, 0 disables compression, 1-9 sets deflate level (1 fastest, 9 smallest), -1 uses the default")
 	convert.IntVar(&opts.Quality, "quality", base.Quality, "Image quality")
-	convert.IntVar(&opts.Effort, "effort", base.Effort, "Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-10), -1 uses the format default")
+	convert.IntVar(&opts.Effort, "effort", base.Effort, "Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-7), -1 uses the format default")
 	convert.BoolVar(&opts.Lossless, "lossless", base.Lossless, "Lossless compression (webp, avif, jxl), ignores quality")
 	convert.BoolVar(&opts.Combine, "combine", base.Combine, "Combine all inputs into a single archive")
 	convert.StringVar(&opts.OutFile, "outfile", base.OutFile, "Output file name for --combine (default: first input + -combined)")
@@ -249,7 +249,7 @@ func parseFlags() (cbconvert.Options, []string) {
 	cover.IntVar(&opts.DPI, "dpi", base.DPI, "Document rendering resolution in DPI (PDF, EPUB, etc.), 0 uses the original resolution")
 	cover.StringVar(&opts.Format, "format", base.Format, "Image format, valid values are jpeg, png, tiff, bmp, webp, avif")
 	cover.IntVar(&opts.Quality, "quality", base.Quality, "Image quality")
-	cover.IntVar(&opts.Effort, "effort", base.Effort, "Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-10), -1 uses the format default")
+	cover.IntVar(&opts.Effort, "effort", base.Effort, "Encoder speed/effort, format-specific (webp method 0-6, avif speed 0-10, jxl effort 1-7), -1 uses the format default")
 	cover.BoolVar(&opts.Lossless, "lossless", base.Lossless, "Lossless compression (webp, avif, jxl), ignores quality")
 	cover.IntVar(&opts.Filter, "filter", base.Filter, "0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 5=Gaussian, 6=Lanczos")
 	cover.StringVar(&opts.OutDir, "outdir", base.OutDir, "Output directory")