新增FLAC格式音乐标签信息写入

src/main/utils/flacMeta.js

@@ -1,32 +1,32 @@
 const fs = require('fs')
-const flac = require('flac-metadata')
+const { Processor: FlacProcessor, data: { MetaDataBlockVorbisComment: FlacComment } } = require('./flac-metadata')
+const vendor = 'reference libFLAC 1.2.1 20070917'
 
 module.exports = (filenPath, meta) => {
   const reader = fs.createReadStream(filenPath)
   const tempPath = filenPath + '.lxmtemp'
   const writer = fs.createWriteStream(tempPath)
-  const processor = new flac.Processor()
+  const flacProcessor = new FlacProcessor()
   if (meta.APIC) delete meta.APIC
 
   const comments = []
   for (const key in meta) {
     comments.push(`${key.toUpperCase()}=${meta[key]}`)
   }
-  const vendor = 'lx-music-desktop'
 
-  processor.on('preprocess', function(mdb) {
+  let isInjected = false
+  flacProcessor.on('preprocess', function(mdb) {
     // Remove existing VORBIS_COMMENT block, if any.
-    if (mdb.type === flac.Processor.MDB_TYPE_VORBIS_COMMENT) {
-      mdb.remove()
-    }
+    if (mdb.type === flacProcessor.MDB_TYPE_VORBIS_COMMENT) mdb.remove()
     // Inject new VORBIS_COMMENT block.
-    if (mdb.removed || mdb.isLast) {
-      let mdbVorbis = flac.data.MetaDataBlockVorbisComment.create(mdb.isLast, vendor, comments)
+    if ((mdb.removed || mdb.isLast) && !isInjected) {
+      isInjected = true
+      let mdbVorbis = FlacComment.create(mdb.isLast, vendor, comments)
       this.push(mdbVorbis.publish())
     }
   })
 
-  reader.pipe(processor).pipe(writer).on('finish', () => {
+  reader.pipe(flacProcessor).pipe(writer).on('finish', () => {
     fs.unlink(filenPath, err => {
       if (err) return console.log(err.message)
       fs.rename(tempPath, filenPath, err => {