perf(hls): rename single decrypted range instead of re-copying

Short-circuit merge() to os.replace() when joining one already-merged file with no init prefix; saves a full track-size copy, falls back to streamed copy across devices.
2026-11-14 13:05:09 +00:00 · 2026-06-29 09:55:08 -06:00
parent efb560f887
commit 03bcfc0c45
1 changed files with 8 additions and 1 deletions
@@ -740,8 +740,15 @@ class HLS:
                    delete: Delete the file once it's been merged.
                    include_map_data: Whether to include the init map data.
                """
+                prepend = include_map_data and map_data and map_data[1]
+                if len(via) == 1 and not prepend and delete:
+                    try:
+                        os.replace(via[0], to)
+                        return
+                    except OSError:
+                        pass
                with open(to, "wb") as x:
-                    if include_map_data and map_data and map_data[1]:
+                    if prepend:
                        x.write(map_data[1])
                    for file in via:
                        with open(file, "rb") as segment: