chore: bump version to v0.2.7

Reviewed-on: #100

.drone.jsonnet

@@ -8,7 +8,10 @@ local CreateRelease() = {
   settings: {
     api_key: { from_secret: 'GITEA_API_KEY' },
     base_url: 'https://git.unlock-music.dev',
-    files: 'dist/*',
+    files: [
+      'um-*.tar.gz',
+      'um-*.zip',
+    ],
     checksum: 'sha256',
     draft: true,
     title: '${DRONE_TAG}',
@@ -17,25 +20,36 @@ local CreateRelease() = {
 
 
 local StepGoBuild(GOOS, GOARCH) = {
-  local filepath = 'dist/um-%s-%s.tar.gz' % [GOOS, GOARCH],
+  local windows = GOOS == 'windows',
+  local archiveExt = if windows then 'zip' else 'tar.gz',
+  local filepath = 'dist/um-%s-%s-%s.%s' % [GOOS, GOARCH, '$(git describe --tags --always)', archiveExt],
+
+  local archive = if windows then [
+    // Ensure zip is installed
+    'command -v zip >/dev/null || (apt update && apt install -y zip)',
+    'zip -9 -j -r "%s" $DIST_DIR' % filepath,
+  ] else [
+    'tar -c -C $DIST_DIR um | gzip -9 > "%s"' % filepath,
+  ],
 
   name: 'go build %s/%s' % [GOOS, GOARCH],
   image: 'golang:1.22',
   environment: {
     GOOS: GOOS,
     GOARCH: GOARCH,
-    GOPROXY: "https://goproxy.io,direct",
+    GOPROXY: 'https://goproxy.io,direct',
   },
   commands: [
     'DIST_DIR=$(mktemp -d)',
     'go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags --always)" -o $DIST_DIR ./cmd/um',
     'mkdir -p dist',
-    'tar cz -f %s -C $DIST_DIR .' % filepath,
+  ] + archive,
-  ],
 };
 
 local StepUploadArtifact(GOOS, GOARCH) = {
-  local filename = 'um-%s-%s.tar.gz' % [GOOS, GOARCH],
+  local windows = GOOS == 'windows',
+  local archiveExt = if windows then 'zip' else 'tar.gz',
+  local filename = 'um-%s-%s-%s.%s' % [GOOS, GOARCH, '$(git describe --tags --always)', archiveExt],
   local filepath = 'dist/%s' % filename,
   local pkgname = '${DRONE_REPO_NAME}-build',
 
@@ -71,7 +85,7 @@ local PipelineBuild(GOOS, GOARCH, RUN_TEST) = {
              name: 'go test',
              image: 'golang:1.22',
              environment: {
-               GOPROXY: "https://goproxy.io,direct",
+               GOPROXY: 'https://goproxy.io,direct',
              },
              commands: ['go test -v ./...'],
            }] else []
@@ -100,7 +114,7 @@ local PipelineRelease() = {
       name: 'go test',
       image: 'golang:1.22',
       environment: {
-        GOPROXY: "https://goproxy.io,direct",
+        GOPROXY: 'https://goproxy.io,direct',
       },
       commands: ['go test -v ./...'],
     },
@@ -108,9 +122,17 @@ local PipelineRelease() = {
     StepGoBuild('linux', 'arm64'),
     StepGoBuild('linux', '386'),
     StepGoBuild('windows', 'amd64'),
+    StepGoBuild('windows', 'arm64'),
     StepGoBuild('windows', '386'),
     StepGoBuild('darwin', 'amd64'),
     StepGoBuild('darwin', 'arm64'),
+    {
+      name: 'prepare root',
+      image: 'golang:1.22',
+      commands: [
+        'mv dist/*.tar.gz dist/*.zip ./',
+      ],
+    },
     CreateRelease(),
   ],
   trigger: {

.drone.yml

@@ -17,7 +17,8 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-linux-amd64.tar.gz -C $DIST_DIR .
+  - tar -c -C $DIST_DIR um | gzip -9 > "dist/um-linux-amd64-$(git describe --tags
+    --always).tar.gz"
   environment:
     GOARCH: amd64
     GOOS: linux
@@ -25,9 +26,10 @@ steps:
   image: golang:1.22
   name: go build linux/amd64
 - commands:
-  - curl --fail --include --user "um-release-bot:$GITEA_API_KEY" --upload-file "dist/um-linux-amd64.tar.gz"
+  - curl --fail --include --user "um-release-bot:$GITEA_API_KEY" --upload-file "dist/um-linux-amd64-$(git
-    "$DRONE_GITEA_SERVER/api/packages/${DRONE_REPO_NAMESPACE}/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}/um-linux-amd64.tar.gz"
+    describe --tags --always).tar.gz" "$DRONE_GITEA_SERVER/api/packages/${DRONE_REPO_NAMESPACE}/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}/um-linux-amd64-$(git
-  - sha256sum dist/um-linux-amd64.tar.gz
+    describe --tags --always).tar.gz"
+  - sha256sum dist/um-linux-amd64-$(git describe --tags --always).tar.gz
   - echo $DRONE_GITEA_SERVER/${DRONE_REPO_NAMESPACE}/-/packages/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}
   environment:
     DRONE_GITEA_SERVER: https://git.unlock-music.dev
@@ -53,7 +55,8 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-windows-amd64.tar.gz -C $DIST_DIR .
+  - command -v zip >/dev/null || (apt update && apt install -y zip)
+  - zip -9 -j -r "dist/um-windows-amd64-$(git describe --tags --always).zip" $DIST_DIR
   environment:
     GOARCH: amd64
     GOOS: windows
@@ -61,9 +64,10 @@ steps:
   image: golang:1.22
   name: go build windows/amd64
 - commands:
-  - curl --fail --include --user "um-release-bot:$GITEA_API_KEY" --upload-file "dist/um-windows-amd64.tar.gz"
+  - curl --fail --include --user "um-release-bot:$GITEA_API_KEY" --upload-file "dist/um-windows-amd64-$(git
-    "$DRONE_GITEA_SERVER/api/packages/${DRONE_REPO_NAMESPACE}/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}/um-windows-amd64.tar.gz"
+    describe --tags --always).zip" "$DRONE_GITEA_SERVER/api/packages/${DRONE_REPO_NAMESPACE}/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}/um-windows-amd64-$(git
-  - sha256sum dist/um-windows-amd64.tar.gz
+    describe --tags --always).zip"
+  - sha256sum dist/um-windows-amd64-$(git describe --tags --always).zip
   - echo $DRONE_GITEA_SERVER/${DRONE_REPO_NAMESPACE}/-/packages/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}
   environment:
     DRONE_GITEA_SERVER: https://git.unlock-music.dev
@@ -89,7 +93,8 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-darwin-amd64.tar.gz -C $DIST_DIR .
+  - tar -c -C $DIST_DIR um | gzip -9 > "dist/um-darwin-amd64-$(git describe --tags
+    --always).tar.gz"
   environment:
     GOARCH: amd64
     GOOS: darwin
@@ -97,9 +102,10 @@ steps:
   image: golang:1.22
   name: go build darwin/amd64
 - commands:
-  - curl --fail --include --user "um-release-bot:$GITEA_API_KEY" --upload-file "dist/um-darwin-amd64.tar.gz"
+  - curl --fail --include --user "um-release-bot:$GITEA_API_KEY" --upload-file "dist/um-darwin-amd64-$(git
-    "$DRONE_GITEA_SERVER/api/packages/${DRONE_REPO_NAMESPACE}/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}/um-darwin-amd64.tar.gz"
+    describe --tags --always).tar.gz" "$DRONE_GITEA_SERVER/api/packages/${DRONE_REPO_NAMESPACE}/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}/um-darwin-amd64-$(git
-  - sha256sum dist/um-darwin-amd64.tar.gz
+    describe --tags --always).tar.gz"
+  - sha256sum dist/um-darwin-amd64-$(git describe --tags --always).tar.gz
   - echo $DRONE_GITEA_SERVER/${DRONE_REPO_NAMESPACE}/-/packages/generic/${DRONE_REPO_NAME}-build/${DRONE_BUILD_NUMBER}
   environment:
     DRONE_GITEA_SERVER: https://git.unlock-music.dev
@@ -131,7 +137,8 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-linux-amd64.tar.gz -C $DIST_DIR .
+  - tar -c -C $DIST_DIR um | gzip -9 > "dist/um-linux-amd64-$(git describe --tags
+    --always).tar.gz"
   environment:
     GOARCH: amd64
     GOOS: linux
@@ -143,7 +150,8 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-linux-arm64.tar.gz -C $DIST_DIR .
+  - tar -c -C $DIST_DIR um | gzip -9 > "dist/um-linux-arm64-$(git describe --tags
+    --always).tar.gz"
   environment:
     GOARCH: arm64
     GOOS: linux
@@ -155,7 +163,7 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-linux-386.tar.gz -C $DIST_DIR .
+  - tar -c -C $DIST_DIR um | gzip -9 > "dist/um-linux-386-$(git describe --tags --always).tar.gz"
   environment:
     GOARCH: "386"
     GOOS: linux
@@ -167,7 +175,8 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-windows-amd64.tar.gz -C $DIST_DIR .
+  - command -v zip >/dev/null || (apt update && apt install -y zip)
+  - zip -9 -j -r "dist/um-windows-amd64-$(git describe --tags --always).zip" $DIST_DIR
   environment:
     GOARCH: amd64
     GOOS: windows
@@ -179,7 +188,21 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-windows-386.tar.gz -C $DIST_DIR .
+  - command -v zip >/dev/null || (apt update && apt install -y zip)
+  - zip -9 -j -r "dist/um-windows-arm64-$(git describe --tags --always).zip" $DIST_DIR
+  environment:
+    GOARCH: arm64
+    GOOS: windows
+    GOPROXY: https://goproxy.io,direct
+  image: golang:1.22
+  name: go build windows/arm64
+- commands:
+  - DIST_DIR=$(mktemp -d)
+  - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
+    --always)" -o $DIST_DIR ./cmd/um
+  - mkdir -p dist
+  - command -v zip >/dev/null || (apt update && apt install -y zip)
+  - zip -9 -j -r "dist/um-windows-386-$(git describe --tags --always).zip" $DIST_DIR
   environment:
     GOARCH: "386"
     GOOS: windows
@@ -191,7 +214,8 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-darwin-amd64.tar.gz -C $DIST_DIR .
+  - tar -c -C $DIST_DIR um | gzip -9 > "dist/um-darwin-amd64-$(git describe --tags
+    --always).tar.gz"
   environment:
     GOARCH: amd64
     GOOS: darwin
@@ -203,13 +227,18 @@ steps:
   - go build -v -trimpath -ldflags="-w -s -X main.AppVersion=$(git describe --tags
     --always)" -o $DIST_DIR ./cmd/um
   - mkdir -p dist
-  - tar cz -f dist/um-darwin-arm64.tar.gz -C $DIST_DIR .
+  - tar -c -C $DIST_DIR um | gzip -9 > "dist/um-darwin-arm64-$(git describe --tags
+    --always).tar.gz"
   environment:
     GOARCH: arm64
     GOOS: darwin
     GOPROXY: https://goproxy.io,direct
   image: golang:1.22
   name: go build darwin/arm64
+- commands:
+  - mv dist/*.tar.gz dist/*.zip ./
+  image: golang:1.22
+  name: prepare root
 - image: plugins/gitea-release
   name: create release
   settings:
@@ -218,7 +247,9 @@ steps:
     base_url: https://git.unlock-music.dev
     checksum: sha256
     draft: true
-    files: dist/*
+    files:
+    - um-*.tar.gz
+    - um-*.zip
     title: ${DRONE_TAG}
 trigger:
   event:

.gitignore

@@ -1,3 +1,7 @@
 .idea
 
 /dist
+*.exe
+
+/um-*.tar.gz
+/um-*.zip

README.md

@@ -6,6 +6,9 @@ Original: Web Edition https://git.unlock-music.dev/um/web
 - [Release Download](https://git.unlock-music.dev/um/cli/releases/latest)
 - [Latest Build](https://git.unlock-music.dev/um/-/packages/generic/cli-build/)
 
+> **WARNING**
+> 在本站 fork 不会起到备份的作用，只会浪费服务器储存空间。如无必要请勿 fork 该仓库。
+
 ## Features
 
 - [x] All Algorithm Supported By `unlock-music/web`
@@ -22,3 +25,13 @@ Original: Web Edition https://git.unlock-music.dev/um/web
 - Drag the encrypted file to `um.exe` (Tested on Windows)
 - Run: `./um [-o <output dir>] [-i] <input dir/file>`
 - Use `./um -h` to show help menu
+
+## Update CI pipeline
+
+1. Install [Drone CI binary](https://docs.drone.io/cli/install/)
+2. Edit `.drone.jsonnet`
+3. Update drone CI pipeline:
+
+   ```sh
+   drone jsonnet --format --stream
+   ```

algo/common/dispatch.go

@@ -18,25 +18,32 @@ type DecoderParams struct {
 }
 type NewDecoderFunc func(p *DecoderParams) Decoder
 
-type decoderItem struct {
+type DecoderFactory struct {
 	noop   bool
-	decoder NewDecoderFunc
+	Suffix string
+	Create NewDecoderFunc
 }
 
-var DecoderRegistry = make(map[string][]decoderItem)
+var DecoderRegistry []DecoderFactory
 
 func RegisterDecoder(ext string, noop bool, dispatchFunc NewDecoderFunc) {
-	DecoderRegistry[ext] = append(DecoderRegistry[ext],
+	DecoderRegistry = append(DecoderRegistry,
-		decoderItem{noop: noop, decoder: dispatchFunc})
+		DecoderFactory{noop: noop, Create: dispatchFunc, Suffix: "." + strings.TrimPrefix(ext, ".")})
 }
 
-func GetDecoder(filename string, skipNoop bool) (rs []NewDecoderFunc) {
+func GetDecoder(filename string, skipNoop bool) []DecoderFactory {
-	ext := strings.ToLower(strings.TrimLeft(filepath.Ext(filename), "."))
+	var result []DecoderFactory
-	for _, dec := range DecoderRegistry[ext] {
+	// Some extensions contains multiple dots, e.g. ".kgm.flac", hence iterate
+	//   all decoders for each extension.
+	name := strings.ToLower(filepath.Base(filename))
+	for _, dec := range DecoderRegistry {
+		if !strings.HasSuffix(name, dec.Suffix) {
+			continue
+		}
 		if skipNoop && dec.noop {
 			continue
 		}
-		rs = append(rs, dec.decoder)
+		result = append(result, dec)
 	}
-	return
+	return result
 }

algo/kgm/kgm.go

@@ -61,4 +61,7 @@ func init() {
 	common.RegisterDecoder("kgma", false, NewDecoder)
 	// Viper
 	common.RegisterDecoder("vpr", false, NewDecoder)
+	// Kugou Android
+	common.RegisterDecoder("kgm.flac", false, NewDecoder)
+	common.RegisterDecoder("vpr.flac", false, NewDecoder)
 }

algo/ncm/ncm.go

@@ -149,12 +149,18 @@ func (d *Decoder) readMetaData() error {
 }
 
 func (d *Decoder) readCoverData() error {
-	bCoverCRC := make([]byte, 4)
+	bCoverFrameLen := make([]byte, 4)
-	if _, err := io.ReadFull(d.rd, bCoverCRC); err != nil {
+	if _, err := io.ReadFull(d.rd, bCoverFrameLen); err != nil {
-		return fmt.Errorf("ncm read cover crc: %w", err)
+		return fmt.Errorf("ncm read cover length: %w", err)
 	}
 
-	bCoverLen := make([]byte, 4) //
+	coverFrameStartOffset, err := d.rd.Seek(0, io.SeekCurrent)
+	if err != nil {
+		return fmt.Errorf("ncm fetch cover frame start offset: %w", err)
+	}
+	coverFrameLen := binary.LittleEndian.Uint32(bCoverFrameLen)
+
+	bCoverLen := make([]byte, 4)
 	if _, err := io.ReadFull(d.rd, bCoverLen); err != nil {
 		return fmt.Errorf("ncm read cover length: %w", err)
 	}
@@ -166,7 +172,10 @@ func (d *Decoder) readCoverData() error {
 	}
 	d.cover = coverBuf
 
-	return nil
+	offsetAudioData := coverFrameStartOffset + int64(coverFrameLen) + 4
+	_, err = d.rd.Seek(offsetAudioData, io.SeekStart)
+
+	return err
 }
 
 func (d *Decoder) parseMeta() error {

algo/qmc/qmc.go

@@ -254,12 +254,20 @@ func init() {
 		"6d3461",   //QQ Music Weiyun M4a
 		"776176",   //QQ Music Weiyun Wav
 
-		"mgg", "mgg1", "mggl", //QQ Music New Ogg
-		"mflac", "mflac0", "mflach", //QQ Music New Flac
-
 		"mmp4", // QQ Music MP4 Container, tipically used for Dolby EAC3 stream
 	}
 	for _, ext := range supportedExts {
 		common.RegisterDecoder(ext, false, NewDecoder)
 	}
+
+	// New ogg/flac:
+	extraExtsCanHaveSuffix := []string{"mgg", "mflac"}
+	// Mac also adds some extra suffix to ext:
+	extraExtSuffix := []string{"0", "1", "a", "h", "l"}
+	for _, ext := range extraExtsCanHaveSuffix {
+		common.RegisterDecoder(ext, false, NewDecoder)
+		for _, suffix := range extraExtSuffix {
+			common.RegisterDecoder(ext+suffix, false, NewDecoder)
+		}
+	}
 }

cmd/um/main.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"os"
 	"os/signal"
+	"path"
 	"path/filepath"
 	"runtime"
 	"runtime/debug"
@@ -33,7 +34,7 @@ import (
 	"unlock-music.dev/cli/internal/utils"
 )
 
-var AppVersion = "v0.0.6"
+var AppVersion = "v0.2.7"
 
 var logger, _ = logging.NewZapLogger() // TODO: inject logger to application, instead of using global logger
 
@@ -50,7 +51,7 @@ func main() {
 		Flags: []cli.Flag{
 			&cli.StringFlag{Name: "input", Aliases: []string{"i"}, Usage: "path to input file or dir", Required: false},
 			&cli.StringFlag{Name: "output", Aliases: []string{"o"}, Usage: "path to output dir", Required: false},
-			&cli.StringFlag{Name: "qmc-mmkv", Aliases: []string{"db"}, Usage: "path to qmc mmkv (`.crc` file also required)", Required: false},
+			&cli.StringFlag{Name: "qmc-mmkv", Aliases: []string{"db"}, Usage: "path to qmc mmkv (.crc file also required)", Required: false},
 			&cli.StringFlag{Name: "qmc-mmkv-key", Aliases: []string{"key"}, Usage: "mmkv password (16 ascii chars)", Required: false},
 			&cli.BoolFlag{Name: "remove-source", Aliases: []string{"rs"}, Usage: "remove source file", Required: false, Value: false},
 			&cli.BoolFlag{Name: "skip-noop", Aliases: []string{"n"}, Usage: "skip noop decoder", Required: false, Value: true},
@@ -74,16 +75,30 @@ func main() {
 
 func printSupportedExtensions() {
 	var exts []string
-	for ext := range common.DecoderRegistry {
+	extSet := make(map[string]int)
+	for _, factory := range common.DecoderRegistry {
+		ext := strings.TrimPrefix(factory.Suffix, ".")
+		if n, ok := extSet[ext]; ok {
+			extSet[ext] = n + 1
+		} else {
+			extSet[ext] = 1
+		}
+	}
+	for ext := range extSet {
 		exts = append(exts, ext)
 	}
 	sort.Strings(exts)
 	for _, ext := range exts {
-		fmt.Printf("%s: %d\n", ext, len(common.DecoderRegistry[ext]))
+		fmt.Printf("%s: %d\n", ext, extSet[ext])
 	}
 }
 
 func appMain(c *cli.Context) (err error) {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+
 	if c.Bool("supported-ext") {
 		printSupportedExtensions()
 		return nil
@@ -92,10 +107,7 @@ func appMain(c *cli.Context) (err error) {
 	if input == "" {
 		switch c.Args().Len() {
 		case 0:
-			input, err = os.Getwd()
+			input = cwd
-			if err != nil {
-				return err
-			}
 		case 1:
 			input = c.Args().Get(0)
 		default:
@@ -104,22 +116,20 @@ func appMain(c *cli.Context) (err error) {
 	}
 
 	output := c.String("output")
-	if output == "" {
-		var err error
-		output, err = os.Getwd()
-		if err != nil {
-			return err
-		}
-		if input == output {
-			return errors.New("input and output path are same")
-		}
-	}
-
 	inputStat, err := os.Stat(input)
 	if err != nil {
 		return err
 	}
 
+	if output == "" {
+		// Default to where the input is
+		if inputStat.IsDir() {
+			output = input
+		} else {
+			output = path.Dir(input)
+		}
+	}
+
 	outputStat, err := os.Stat(output)
 	if err != nil {
 		if errors.Is(err, os.ErrNotExist) {
@@ -142,6 +152,7 @@ func appMain(c *cli.Context) (err error) {
 	}
 
 	proc := &processor{
+		inputDir:        input,
 		outputDir:       output,
 		skipNoopDecoder: c.Bool("skip-noop"),
 		removeSource:    c.Bool("remove-source"),
@@ -150,8 +161,8 @@ func appMain(c *cli.Context) (err error) {
 	}
 
 	if inputStat.IsDir() {
-		wacthDir := c.Bool("watch")
+		watchDir := c.Bool("watch")
-		if !wacthDir {
+		if !watchDir {
 			return proc.processDir(input)
 		} else {
 			return proc.watchDir(input)
@@ -163,6 +174,7 @@ func appMain(c *cli.Context) (err error) {
 }
 
 type processor struct {
+	inputDir  string
 	outputDir string
 
 	skipNoopDecoder bool
@@ -230,34 +242,62 @@ func (p *processor) processDir(inputDir string) error {
 	if err != nil {
 		return err
 	}
+
+	var lastError error = nil
 	for _, item := range items {
-		if item.IsDir() {
-			continue
-		}
-
 		filePath := filepath.Join(inputDir, item.Name())
-		allDec := common.GetDecoder(filePath, p.skipNoopDecoder)
+		if item.IsDir() {
-		if len(allDec) == 0 {
+			if err = p.processDir(filePath); err != nil {
-			logger.Info("skipping while no suitable decoder", zap.String("source", item.Name()))
+				lastError = err
+			}
 			continue
 		}
 
-		if err := p.process(filePath, allDec); err != nil {
+		if err := p.processFile(filePath); err != nil {
+			lastError = err
 			logger.Error("conversion failed", zap.String("source", item.Name()), zap.Error(err))
 		}
 	}
+	if lastError != nil {
+		return fmt.Errorf("last error: %w", lastError)
+	}
 	return nil
 }
 
 func (p *processor) processFile(filePath string) error {
 	allDec := common.GetDecoder(filePath, p.skipNoopDecoder)
 	if len(allDec) == 0 {
-		logger.Fatal("skipping while no suitable decoder")
+		return errors.New("skipping while no suitable decoder")
 	}
-	return p.process(filePath, allDec)
+
+	if err := p.process(filePath, allDec); err != nil {
+		return err
+	}
+
+	// if source file need to be removed
+	if p.removeSource {
+		err := os.RemoveAll(filePath)
+		if err != nil {
+			return err
+		}
+		logger.Info("source file removed after success conversion", zap.String("source", filePath))
+	}
+	return nil
 }
 
-func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) error {
+func (p *processor) findDecoder(decoders []common.DecoderFactory, params *common.DecoderParams) (*common.Decoder, *common.DecoderFactory, error) {
+	for _, factory := range decoders {
+		dec := factory.Create(params)
+		err := dec.Validate()
+		if err == nil {
+			return &dec, &factory, nil
+		}
+		logger.Warn("try decode failed", zap.Error(err))
+	}
+	return nil, nil, errors.New("no any decoder can resolve the file")
+}
+
+func (p *processor) process(inputFile string, allDec []common.DecoderFactory) error {
 	file, err := os.Open(inputFile)
 	if err != nil {
 		return err
@@ -265,26 +305,16 @@ func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) er
 	defer file.Close()
 	logger := logger.With(zap.String("source", inputFile))
 
-	decParams := &common.DecoderParams{
+	pDec, decoderFactory, err := p.findDecoder(allDec, &common.DecoderParams{
 		Reader:    file,
 		Extension: filepath.Ext(inputFile),
 		FilePath:  inputFile,
 		Logger:    logger,
+	})
+	if err != nil {
+		return err
 	}
-
+	dec := *pDec
-	var dec common.Decoder
-	for _, decFunc := range allDec {
-		dec = decFunc(decParams)
-		if err := dec.Validate(); err == nil {
-			break
-		} else {
-			logger.Warn("try decode failed", zap.Error(err))
-			dec = nil
-		}
-	}
-	if dec == nil {
-		return errors.New("no any decoder can resolve the file")
-	}
 
 	params := &ffmpeg.UpdateMetadataParams{}
 
@@ -341,13 +371,19 @@ func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) er
 		}
 	}
 
-	inFilename := strings.TrimSuffix(filepath.Base(inputFile), filepath.Ext(inputFile))
+	inputRelDir, err := filepath.Rel(p.inputDir, filepath.Dir(inputFile))
-	outPath := filepath.Join(p.outputDir, inFilename+params.AudioExt)
+	if err != nil {
+		return fmt.Errorf("get relative dir failed: %w", err)
+	}
+
+	inFilename := strings.TrimSuffix(filepath.Base(inputFile), decoderFactory.Suffix)
+	outPath := filepath.Join(p.outputDir, inputRelDir, inFilename+params.AudioExt)
 
 	if !p.overwriteOutput {
 		_, err := os.Stat(outPath)
 		if err == nil {
-			return fmt.Errorf("output file %s is already exist", outPath)
+			logger.Warn("output file already exist, skip", zap.String("destination", outPath))
+			return nil
 		} else if !errors.Is(err, os.ErrNotExist) {
 			return fmt.Errorf("stat output file failed: %w", err)
 		}
@@ -363,8 +399,6 @@ func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) er
 		if _, err := io.Copy(outFile, audio); err != nil {
 			return err
 		}
-		outFile.Close()
-
 	} else {
 		ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
 		defer cancel()
@@ -374,16 +408,6 @@ func (p *processor) process(inputFile string, allDec []common.NewDecoderFunc) er
 		}
 	}
 
-	// if source file need to be removed
-	if p.removeSource {
-		err := os.RemoveAll(inputFile)
-		if err != nil {
-			return err
-		}
-		logger.Info("successfully converted, and source file is removed", zap.String("source", inputFile), zap.String("destination", outPath))
-	} else {
 	logger.Info("successfully converted", zap.String("source", inputFile), zap.String("destination", outPath))
-	}
-
 	return nil
 }

go.mod

@@ -10,10 +10,10 @@ require (
 	github.com/samber/lo v1.39.0
 	github.com/urfave/cli/v2 v2.27.1
 	go.uber.org/zap v1.27.0
-	golang.org/x/crypto v0.22.0
+	golang.org/x/crypto v0.26.0
 	golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f
-	golang.org/x/text v0.14.0
+	golang.org/x/text v0.17.0
-	unlock-music.dev/mmkv v0.0.0-20240424090133-0953e6901f3a
+	unlock-music.dev/mmkv v0.0.0-20240424090133-31549c6a948b
 )
 
 require (
@@ -21,6 +21,6 @@ require (
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/sys v0.23.0 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect
 )

go.sum

@@ -26,14 +26,22 @@ go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
 go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
 golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
 golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
+golang.org/x/crypto v0.26.0 h1:RrRspgV4mU+YwB4FYnuBoKsUapNIL5cohGAmSH3azsw=
+golang.org/x/crypto v0.26.0/go.mod h1:GY7jblb9wI+FOo5y8/S2oY4zWP07AkOJ4+jxCqdqn54=
 golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f h1:99ci1mjWVBWwJiEKYY6jWa4d2nTQVIEhZIptnrVb1XY=
 golang.org/x/exp v0.0.0-20240416160154-fe59bbe5cc7f/go.mod h1:/lliqkxwWAhPjf5oSOIJup2XcqJaw8RGS6k3TGEc7GI=
 golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
 golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
+golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.17.0 h1:XtiM5bkSOt+ewxlOE/aE/AKEHibwj/6gvWMl9Rsh0Qc=
+golang.org/x/text v0.17.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
 google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 unlock-music.dev/mmkv v0.0.0-20240424090133-0953e6901f3a h1:UW0sxgwsfGGC/SrKvvAbZ4HZyOQ3fqs8qr3lBxG6Fzo=
 unlock-music.dev/mmkv v0.0.0-20240424090133-0953e6901f3a/go.mod h1:qr34SM3x8xRxyUfGzefH/rSi+DUXkQZcSfXY/yfuTeo=
+unlock-music.dev/mmkv v0.0.0-20240424090133-31549c6a948b h1:VIJ0mDqj0OgX1ZvL9gbAH8kkqyrDlpVt5yUeGYSJ1/s=
+unlock-music.dev/mmkv v0.0.0-20240424090133-31549c6a948b/go.mod h1:qr34SM3x8xRxyUfGzefH/rSi+DUXkQZcSfXY/yfuTeo=