Metadata

communication_subroutine.py

@@ -2,14 +2,20 @@ import logging
 import threading
 import json
 import time
+import re
+from urllib import request as urequest
+
 from queue import Queue, Empty
 from flask import Flask, jsonify, request
 from waitress import serve
 
 HOST_ADDRESS = "192.168.1.191"
 PORT_ADDRESS = 5000
+ICECAST_ADDRESS = "192.168.1.12:666"
 OUT_COMM_Q = Queue()
 IN_COMM_Q = Queue()
+SRCHTITLE = re.compile(br'StreamTitle=\\*(?P<title>[^;]*);').search
+
 awaiting_q = []
 incoming_q = Queue()
 app = Flask(__name__)
@@ -20,7 +26,8 @@ PREPPED_TRACKS = {
     "priority":"",
     "jingles":"",
     "now_playing":"",
-    "next": ""
+    "next": "",
+    "meta" : ""
 }
 logger = logging.getLogger("discord")
 
@@ -49,7 +56,9 @@ def log_radio_tracks():
     record = json.loads(request.data)
     logger.info(record)
     if "next" in record[0]:
+        metadata = id3(ICECAST_ADDRESS)
         PREPPED_TRACKS["now_playing"] = PREPPED_TRACKS["next"]
+        PREPPED_TRACKS["meta"] = metadata["name"] + " - " + metadata["title"] + "(" + metadata["genre"] + ")"
     PREPPED_TRACKS[record[0]] = record[1]
     logger.info("DATA RECEIVED")
     return jsonify("SUCCESS")
@@ -150,6 +159,28 @@ def scan_incoming():
         except Empty:
             time.sleep(1)
 
+def get_stream_title(tag:bytes) -> str:
+    title = ''
+    if m := SRCHTITLE(tag):
+        #decode, strip, unescape and remove surrounding quotes (may not even be the same type of quote)
+        title = m.group('title').decode('utf-8').strip().replace('\\', '')[1:-1]
+    return title
+
+def id3(url:str) -> dict:
+    request = urequest.Request(url, headers={'Icy-MetaData': 1})
+
+    with urequest.urlopen(request) as resp:
+        metaint = int(resp.headers.get('icy-metaint', '-1'))
+        if metaint<0:
+            return False
+        resp.read(metaint) #this isn't seekable so, arbitrarily read to the point we want
+        tagdata = dict(
+            site_url = resp.headers.get('icy-url'  )        ,
+            name     = resp.headers.get('icy-name' ).title(),
+            genre    = resp.headers.get('icy-genre').title(),
+            title    = get_stream_title(resp.read(255))     )
+        return tagdata
+
 
 def comm_subroutine():
     """