Add new Track Event, OnSegmentDownloaded

Like OnDownloaded but called every time a DASH or HLS segment is downloaded. The path to the downloaded segment file is passed to the callable.

devine/core/manifests/dash.py

@@ -565,6 +565,9 @@ class DASH:
             segmented=True
         )
 
+        if callable(track.OnSegmentDownloaded):
+            track.OnSegmentDownloaded(out_path)
+
         # fix audio decryption on ATVP by fixing the sample description index
         # TODO: Should this be done in the video data or the init data?
         if isinstance(track, Audio):

devine/core/manifests/hls.py

@@ -484,6 +484,9 @@ class HLS:
             segmented=True
         )
 
+        if callable(track.OnSegmentDownloaded):
+            track.OnSegmentDownloaded(out_path)
+
         download_size = out_path.stat().st_size
 
         # fix audio decryption on ATVP by fixing the sample description index

devine/core/tracks/track.py

@@ -55,6 +55,8 @@ class Track:
         # TODO: Currently using OnFoo event naming, change to just segment_filter
         self.OnSegmentFilter: Optional[Callable] = None
 
+        # Called after one of the Track's segments have downloaded
+        self.OnSegmentDownloaded: Optional[Callable[[Path], None]] = None
         # Called after the Track has downloaded
         self.OnDownloaded: Optional[Callable] = None
         # Called after the Track or one of its segments have been decrypted