ipcam_server: add DVRScanInvalidTimecodes exception type, change handling logic

src/home/camera/util.py

@@ -63,9 +63,11 @@ async def ffmpeg_cut(input: str,
 
 
 def dvr_scan_timecodes(timecodes: str) -> list[tuple[int, int]]:
+    tc_backup = timecodes
+
     timecodes = timecodes.split(',')
     if len(timecodes) % 2 != 0:
-        raise ValueError('invalid number of timecodes')
+        raise DVRScanInvalidTimecodes(f'invalid number of timecodes. input: {tc_backup}')
 
     timecodes = list(map(time2seconds, timecodes))
     timecodes = list(chunks(timecodes, 2))
@@ -73,7 +75,7 @@ def dvr_scan_timecodes(timecodes: str) -> list[tuple[int, int]]:
     # sort out invalid fragments (dvr-scan returns them sometimes, idk why...)
     timecodes = list(filter(lambda f: f[0] < f[1], timecodes))
     if not timecodes:
-        raise ValueError('no valid timecodes')
+        raise DVRScanInvalidTimecodes(f'no valid timecodes. input: {tc_backup}')
 
     # https://stackoverflow.com/a/43600953
     timecodes.sort(key=lambda interval: interval[0])
@@ -88,6 +90,10 @@ def dvr_scan_timecodes(timecodes: str) -> list[tuple[int, int]]:
     return merged
 
 
+class DVRScanInvalidTimecodes(Exception):
+    pass
+
+
 def has_handle(fpath):
     for proc in psutil.process_iter():
         try:

src/ipcam_server.py

@@ -176,9 +176,10 @@ class IPCamWebServer(http.HTTPServer):
             db.set_timestamp(camera, TimeFilterType.MOTION, time)
             return self.ok()
 
-        except ValueError as e:
+        except camutil.DVRScanInvalidTimecodes as e:
+            db.add_motion_failure(camera, filename, str(e))
             db.set_timestamp(camera, TimeFilterType.MOTION, time)
-            raise e
+            return self.ok('invalid timecodes')
 
     async def submit_motion_failure(self, req: http.Request):
         camera = int(req.match_info['name'])