[Bug Fix] Add partial rotary factor support for Phi-4 and upgrade to transformers v4.50.0 (#3984)

Co-authored-by: Chayenne <zhaochen20@outlook.com>

python/sglang/srt/hf_transformers_utils.py

@@ -35,10 +35,7 @@ from sglang.srt.configs import (
     DbrxConfig,
     DeepseekVL2Config,
     ExaoneConfig,
-    Gemma3Config,
-    Gemma3TextConfig,
     MultiModalityConfig,
-    Qwen2_5_VLConfig,
 )
 from sglang.srt.connector import create_remote_connector
 from sglang.srt.utils import is_remote_url
@@ -47,11 +44,8 @@ _CONFIG_REGISTRY: Dict[str, Type[PretrainedConfig]] = {
     ChatGLMConfig.model_type: ChatGLMConfig,
     DbrxConfig.model_type: DbrxConfig,
     ExaoneConfig.model_type: ExaoneConfig,
-    Qwen2_5_VLConfig.model_type: Qwen2_5_VLConfig,
     DeepseekVL2Config.model_type: DeepseekVL2Config,
     MultiModalityConfig.model_type: MultiModalityConfig,
-    Gemma3Config.model_type: Gemma3Config,
-    Gemma3TextConfig.model_type: Gemma3TextConfig,
 }
 
 for name, cls in _CONFIG_REGISTRY.items():
@@ -223,11 +217,26 @@ def get_processor(
     tokenizer_revision: Optional[str] = None,
     **kwargs,
 ):
+    # pop 'revision' from kwargs if present.
+    revision = kwargs.pop("revision", tokenizer_revision)
+
+    config = AutoConfig.from_pretrained(
+        tokenizer_name,
+        trust_remote_code=trust_remote_code,
+        revision=revision,
+        **kwargs,
+    )
+
+    # fix: for Qwen2-VL model, inject default 'size' if not provided.
+    if config.model_type in {"qwen2_vl"}:
+        if "size" not in kwargs:
+            kwargs["size"] = {"shortest_edge": 3136, "longest_edge": 1003520}
+
     processor = AutoProcessor.from_pretrained(
         tokenizer_name,
         *args,
         trust_remote_code=trust_remote_code,
-        tokenizer_revision=tokenizer_revision,
+        revision=revision,
         **kwargs,
     )