Open Street Maps integration

Added OSM to openpilot to use speed limits and road names.

Credit goes to Pfeiferj!

https: //github.com/pfeiferj
Co-Authored-By: Jacob Pfeifer <jacob@pfeifer.dev>

selfdrive/frogpilot/functions/mapd.py

@@ -0,0 +1,56 @@
+# PFEIFER - MAPD
+import os
+import subprocess
+import urllib.request
+from openpilot.common.realtime import Ratekeeper
+import stat
+
+VERSION = 'v1.8.1'
+URL = f"https://github.com/pfeiferj/openpilot-mapd/releases/download/{VERSION}/mapd"
+MAPD_PATH = '/data/media/0/osm/mapd'
+VERSION_PATH = '/data/media/0/osm/mapd_version'
+
+def download():
+  mapd_dir = os.path.dirname(MAPD_PATH)
+  if not os.path.exists(mapd_dir):
+    os.makedirs(mapd_dir)
+  with urllib.request.urlopen(URL) as f:
+    with open(MAPD_PATH, 'wb') as output:
+      output.write(f.read())
+      os.fsync(output)
+      current_permissions = stat.S_IMODE(os.lstat(MAPD_PATH).st_mode) # <-- preserve permissions
+      os.chmod(MAPD_PATH, current_permissions | stat.S_IEXEC) # <-- preserve permissions
+    with open(VERSION_PATH, 'w') as output:
+      output.write(VERSION)
+      os.fsync(output)
+
+def mapd_thread(sm=None, pm=None):
+  rk = Ratekeeper(0.05, print_delay_threshold=None)
+
+  while True:
+    try:
+      if not os.path.exists(MAPD_PATH):
+        download()
+        continue
+      if not os.path.exists(VERSION_PATH):
+        download()
+        continue
+      with open(VERSION_PATH) as f:
+        content = f.read()
+        if content != VERSION:
+          download()
+          continue
+
+      process = subprocess.Popen(MAPD_PATH)
+      process.wait()
+    except Exception as e:
+      print(e)
+
+    rk.keep_time()
+
+
+def main(sm=None, pm=None):
+  mapd_thread(sm, pm)
+
+if __name__ == "__main__":
+  main()