feat: Add remove mp3 id3 tag function

Signed-off-by: bowji <bowji@bowji-m-dnpx.dclife.fun>

Signed-off-by: Bowen Ji <jibwf@hotmail.com>

.gitignore

@@ -165,3 +165,4 @@ ffmpeg
 music
 test.sh
 conf
+setting.json

xiaomusic/config.py

@@ -133,6 +133,9 @@ class Config:
     group_list: str = os.getenv(
         "XIAOMUSIC_GROUP_LIST", ""
     )  # did1:group_name,did2:group_name
+    remove_id3tag: bool = (
+        os.getenv("XIAOMUSIC_REMOVE_ID3TAG", "false").lower() == "true"
+    )
 
     def append_keyword(self, keys, action):
         for key in keys.split(","):

xiaomusic/static/setting.html

@@ -95,6 +95,13 @@ var vConsole = new window.VConsole();
           <option value="true" selected>true</option>
           <option value="false">false</option>
         </select>
+
+        <label for="remove_id3tag">去除MP3 ID3v2和填充，减少播放前延迟:</label>
+        <select id="remove_id3tag">
+          <option value="true" >true</option>
+          <option value="false" selected>false</option>
+        </select>
+
         <label for="httpauth_username">web控制台账户:</label>
         <input id="httpauth_username" type="text" value=""></input>
         <label for="httpauth_password">web控制台密码:</label>

xiaomusic/utils.py

@@ -12,6 +12,10 @@ import tempfile
 from collections.abc import AsyncIterator
 from http.cookies import SimpleCookie
 from urllib.parse import urlparse
+from mutagen.id3 import ID3
+from mutagen.mp3 import MP3
+import os
+import shutil
 
 import aiohttp
 import mutagen
@@ -295,3 +299,40 @@ def parse_str_to_dict(s, d1=",", d2=":"):
             result[k] = v
 
     return result
+
+# remove mp3 file id3 tag and padding to reduce delay
+def no_padding(info):
+    # this will remove all padding
+    return 0
+
+def remove_id3_tags(filename,music_path):
+
+    file_path = music_path + "/" + filename
+    audio = MP3(file_path, ID3=ID3)
+    change = False
+    
+    # 检查是否存在ID3 v2.3或v2.4标签
+    if audio.tags and (audio.tags.version == (2, 3, 0) or audio.tags.version == (2, 4, 0)):
+
+        # 构造新文件的路径
+        new_file_path = file_path + ".bak"
+
+        # 备份原始文件为新文件
+        shutil.copy(file_path, new_file_path)
+
+        # 删除ID3标签
+        audio.delete()
+
+        # 删除padding
+        audio.save(padding=no_padding)
+        
+        # 保存修改后的文件
+        audio.save()
+
+        change = True
+    
+    return filename,change
+
+    
+
+

xiaomusic/xiaomusic.py

@@ -40,6 +40,9 @@ from xiaomusic.utils import (
     parse_cookie_string,
     parse_str_to_dict,
     traverse_music_directory,
+    remove_id3_tags,
+    is_mp3
+
 )
 
 
@@ -106,6 +109,7 @@ class XiaoMusic:
         self.active_cmd = self.config.active_cmd.split(",")
         self.exclude_dirs = set(self.config.exclude_dirs.split(","))
         self.music_path_depth = self.config.music_path_depth
+        self.remove_id3tag = self.config.remove_id3tag
 
     def update_devices(self):
         self.device_id_did = {}  # key 为 device_id
@@ -373,6 +377,15 @@ class XiaoMusic:
         if filename.startswith("/"):
             filename = filename[1:]
         self.log.debug(f"get_music_url local music. name:{name}, filename:{filename}")
+
+        #移除MP3 ID3 v2标签和填充，减少播放前延迟 
+        if self.remove_id3tag and is_mp3(f"{self.music_path}/{filename}"):
+            self.log.info(f"remove_id3tag:{self.remove_id3tag}, is_mp3:True ")
+            filename,change = remove_id3_tags(filename,self.music_path)
+            if change:
+                self.log.info(f"ID3 tag removed, orgin mp3 file saved as bak")
+            else:
+                self.log.info(f"No ID3 tag remove needed")
         encoded_name = urllib.parse.quote(filename)
         return f"http://{self.hostname}:{self.public_port}/music/{encoded_name}"