Add ControlNetUnion to AutoPipeline from_pretrained (#10219)

Author: hlky

src/diffusers/pipelines/auto_pipeline.py

@@ -18,6 +18,7 @@
 from huggingface_hub.utils import validate_hf_hub_args
 
 from ..configuration_utils import ConfigMixin
+from ..models.controlnets import ControlNetUnionModel
 from ..utils import is_sentencepiece_available
 from .aura_flow import AuraFlowPipeline
 from .cogview3 import CogView3PlusPipeline
@@ -28,6 +29,9 @@
     StableDiffusionXLControlNetImg2ImgPipeline,
     StableDiffusionXLControlNetInpaintPipeline,
     StableDiffusionXLControlNetPipeline,
+    StableDiffusionXLControlNetUnionImg2ImgPipeline,
+    StableDiffusionXLControlNetUnionInpaintPipeline,
+    StableDiffusionXLControlNetUnionPipeline,
 )
 from .deepfloyd_if import IFImg2ImgPipeline, IFInpaintingPipeline, IFPipeline
 from .flux import (
@@ -108,6 +112,7 @@
         ("kandinsky3", Kandinsky3Pipeline),
         ("stable-diffusion-controlnet", StableDiffusionControlNetPipeline),
         ("stable-diffusion-xl-controlnet", StableDiffusionXLControlNetPipeline),
+        ("stable-diffusion-xl-controlnet-union", StableDiffusionXLControlNetUnionPipeline),
         ("wuerstchen", WuerstchenCombinedPipeline),
         ("cascade", StableCascadeCombinedPipeline),
         ("lcm", LatentConsistencyModelPipeline),
@@ -139,6 +144,7 @@
         ("stable-diffusion-controlnet", StableDiffusionControlNetImg2ImgPipeline),
         ("stable-diffusion-pag", StableDiffusionPAGImg2ImgPipeline),
         ("stable-diffusion-xl-controlnet", StableDiffusionXLControlNetImg2ImgPipeline),
+        ("stable-diffusion-xl-controlnet-union", StableDiffusionXLControlNetUnionImg2ImgPipeline),
         ("stable-diffusion-xl-pag", StableDiffusionXLPAGImg2ImgPipeline),
         ("stable-diffusion-xl-controlnet-pag", StableDiffusionXLControlNetPAGImg2ImgPipeline),
         ("lcm", LatentConsistencyModelImg2ImgPipeline),
@@ -158,6 +164,7 @@
         ("stable-diffusion-controlnet", StableDiffusionControlNetInpaintPipeline),
         ("stable-diffusion-controlnet-pag", StableDiffusionControlNetPAGInpaintPipeline),
         ("stable-diffusion-xl-controlnet", StableDiffusionXLControlNetInpaintPipeline),
+        ("stable-diffusion-xl-controlnet-union", StableDiffusionXLControlNetUnionInpaintPipeline),
         ("stable-diffusion-xl-pag", StableDiffusionXLPAGInpaintPipeline),
         ("flux", FluxInpaintPipeline),
         ("flux-controlnet", FluxControlNetInpaintPipeline),
@@ -396,7 +403,10 @@ def from_pretrained(cls, pretrained_model_or_path, **kwargs):
         orig_class_name = config["_class_name"]
 
         if "controlnet" in kwargs:
-            orig_class_name = config["_class_name"].replace("Pipeline", "ControlNetPipeline")
+            if isinstance(kwargs["controlnet"], ControlNetUnionModel):
+                orig_class_name = config["_class_name"].replace("Pipeline", "ControlNetUnionPipeline")
+            else:
+                orig_class_name = config["_class_name"].replace("Pipeline", "ControlNetPipeline")
         if "enable_pag" in kwargs:
             enable_pag = kwargs.pop("enable_pag")
             if enable_pag:
@@ -688,7 +698,10 @@ def from_pretrained(cls, pretrained_model_or_path, **kwargs):
         to_replace = "Img2ImgPipeline" if "Img2Img" in config["_class_name"] else "Pipeline"
 
         if "controlnet" in kwargs:
-            orig_class_name = orig_class_name.replace(to_replace, "ControlNet" + to_replace)
+            if isinstance(kwargs["controlnet"], ControlNetUnionModel):
+                orig_class_name = orig_class_name.replace(to_replace, "ControlNetUnion" + to_replace)
+            else:
+                orig_class_name = orig_class_name.replace(to_replace, "ControlNet" + to_replace)
         if "enable_pag" in kwargs:
             enable_pag = kwargs.pop("enable_pag")
             if enable_pag:
@@ -985,7 +998,10 @@ def from_pretrained(cls, pretrained_model_or_path, **kwargs):
         to_replace = "InpaintPipeline" if "Inpaint" in config["_class_name"] else "Pipeline"
 
         if "controlnet" in kwargs:
-            orig_class_name = orig_class_name.replace(to_replace, "ControlNet" + to_replace)
+            if isinstance(kwargs["controlnet"], ControlNetUnionModel):
+                orig_class_name = orig_class_name.replace(to_replace, "ControlNetUnion" + to_replace)
+            else:
+                orig_class_name = orig_class_name.replace(to_replace, "ControlNet" + to_replace)
         if "enable_pag" in kwargs:
             enable_pag = kwargs.pop("enable_pag")
             if enable_pag: