fix: do not chunk with audio.cpp backend (double chunking)

1 files changed, 20 insertions, 0 deletions

diff --git a/audiobook.py b/audiobook.py
index c2639ce..b881a12 100755
--- a/audiobook.py
+++ b/audiobook.py
@@ -145,11 +145,30 @@ Examples:
               "and log every TTS request and response to the console and log file.")
     )
 
+    parser.add_argument(
+        "--chunk",
+        action="store_true",
+        help=("Force client-side chunking into CHUNK_SIZE-word requests (see "
+              "converter/config.py). Only matters for --backend audiocpp, which "
+              "otherwise sends each chapter as one request and lets the server "
+              "chunk long text itself; the gradio and faster backends always "
+              "chunk.")
+    )
+
     args = parser.parse_args()
 
     if args.speed <= 0:
         parser.error(f"--speed must be a positive number (got {args.speed:g})")
 
+    if args.chunk:
+        if args.backend == BACKEND_AUDIOCPP:
+            print("[WARNING] --chunk: the audio.cpp server already splits long text "
+                  "internally (its text_chunk_size); forcing client-side chunking "
+                  "may cause needless double-chunking")
+        else:
+            print(f"[INFO] --chunk has no effect with --backend {args.backend}: "
+                  "that backend always chunks")
+
     if args.backend == BACKEND_FASTER:
         if args.clone:
             print("[WARNING] --clone is ignored with --backend faster: that backend "
@@ -221,6 +240,7 @@ Examples:
             backend=args.backend,
             voice=args.voice,
             debug=args.debug,
+            chunk=args.chunk,
         )
         ok = converter.run()
     except KeyboardInterrupt: