revert changes in qwen 3 tts

Signed-off-by: tzhouam <tzhouam@connect.ust.hk>

vllm_omni/model_executor/stage_input_processors/qwen3_tts.py

@@ -116,12 +116,18 @@ def talker2code2wav_async_chunk(
             initial_chunk_size = int(entry.list_data[0])
             per_request_override = True
 
-    # Dynamic IC: recalculate each call so IC adapts to current load.
+    # Dynamic IC: cache per request so boundaries stay stable for its lifetime.
     if not per_request_override:
-        max_ic = max_ic_for_chunk_size(chunk_size)
-        active = sum(1 for v in transfer_manager.code_prompt_token_ids.values() if len(v) > 0)
-        capacity = getattr(transfer_manager, "scheduler_max_num_seqs", 1)
-        initial_chunk_size = compute_dynamic_initial_chunk_size(active, capacity, max_ic)
+        _ic_cache = getattr(transfer_manager, "_cached_ic", None)
+        if _ic_cache is None:
+            _ic_cache = {}
+            transfer_manager._cached_ic = _ic_cache
+        if request_id not in _ic_cache:
+            max_ic = max_ic_for_chunk_size(chunk_size)
+            active = sum(1 for v in transfer_manager.code_prompt_token_ids.values() if len(v) > 0)
+            capacity = getattr(transfer_manager, "scheduler_max_num_seqs", 1)
+            _ic_cache[request_id] = compute_dynamic_initial_chunk_size(active, capacity, max_ic)
+        initial_chunk_size = _ic_cache[request_id]
 
     if chunk_size <= 0 or left_context_size_config < 0 or initial_chunk_size < 0:
         raise ValueError(
@@ -139,13 +145,11 @@ def talker2code2wav_async_chunk(
         initial_chunk_size = chunk_size
     length = len(transfer_manager.code_prompt_token_ids[request_id])
 
-    finished_tensor = torch.tensor(finished, dtype=torch.bool)
-
     if length <= 0:
         if finished:
             return {
                 "code_predictor_codes": [],
-                "finished": finished_tensor,
+                "finished": True,
             }
         return None
 
@@ -193,5 +197,5 @@ def talker2code2wav_async_chunk(
     return {
         "code_predictor_codes": code_predictor_codes,
         "left_context_size": left_context_size,
-        "finished": finished_tensor,
+        "finished": finished,
     }