完成Web ASM

ncmcrypt/embed.go

@@ -0,0 +1,44 @@
+package ncmcrypt
+
+import (
+	"fmt"
+	"os"
+)
+
+func EmbedMetadata(audio []byte, format NcmFormat, title, artist, album string, coverData []byte) ([]byte, error) {
+	tmpFile, err := os.CreateTemp("", "ncmdump-embed-*")
+	if err != nil {
+		return nil, fmt.Errorf("create temp file: %w", err)
+	}
+	tmpPath := tmpFile.Name()
+	defer os.Remove(tmpPath)
+
+	if _, err := tmpFile.Write(audio); err != nil {
+		tmpFile.Close()
+		return nil, fmt.Errorf("write temp: %w", err)
+	}
+	tmpFile.Close()
+
+	ncm := &NeteaseCloudMusic{
+		mPng:          [8]byte{0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A},
+		mFormat:       format,
+		mDumpFilePath: tmpPath,
+		mImageData:    coverData,
+		mMetadata: &NeteaseClousMusicMetadata{
+			mName:   title,
+			mArtist: artist,
+			mAlbum:  album,
+		},
+	}
+
+	if _, err := ncm.FixMetadata(false); err != nil {
+		return nil, fmt.Errorf("write metadata: %w", err)
+	}
+
+	result, err := os.ReadFile(tmpPath)
+	if err != nil {
+		return nil, fmt.Errorf("read result: %w", err)
+	}
+
+	return result, nil
+}