Get -j, -x, and -s from aria2c config, default to 16

CONFIG.md

@@ -10,6 +10,14 @@ which does not keep comments.
 
 ## aria2c (dict)
 
+- `max_concurrent_downloads`
+  Maximum number of parallel downloads. Default: `5`  
+  Note: Currently unused as downloads are multi-threaded by Devine rather than Aria2c.
+  Devine internally has a constant set value of 16 for it's parallel downloads.
+- `max_connection_per_server`
+  Maximum number of connections to one server for each download. Default: `1`
+- `split`
+  Split a file into N chunks and download each chunk on it's own connection. Default: `5`
 - `file_allocation`
   Specify file allocation method. Default: `"prealloc"`
 

devine/core/downloaders/aria2c.py

@@ -60,8 +60,12 @@ async def aria2c(
         async with start_pproxy(proxy) as pproxy_:
             return await aria2c(uri, out, headers, cookies, pproxy_, silent, segmented, progress, *args)
 
+    max_concurrent_downloads = int(config.aria2c.get("max_concurrent_downloads", 16))
+    max_connection_per_server = int(config.aria2c.get("max_connection_per_server", 16))
+    split = int(config.aria2c.get("split", 16))
     file_allocation = config.aria2c.get("file_allocation", "prealloc")
     if segmented:
+        split = 1
         file_allocation = "none"
 
     arguments = [
@@ -71,9 +75,9 @@ async def aria2c(
         "--all-proxy", proxy or "",
         "--continue=true",
         # [Connection Options]
-        "--max-concurrent-downloads=16",
+        f"--max-concurrent-downloads={max_concurrent_downloads}",
-        "--max-connection-per-server=16",
+        f"--max-connection-per-server={max_connection_per_server}",
-        f"--split={1 if segmented else 16}",  # each split uses their own connection
+        f"--split={split}",  # each split uses their own connection
         "--max-file-not-found=5",  # counted towards --max-tries
         "--max-tries=5",
         "--retry-wait=2",