Add UniDiffuser model and pipeline

src/diffusers/__init__.py

@@ -115,6 +115,7 @@
         AltDiffusionPipeline,
         AudioLDMPipeline,
         CycleDiffusionPipeline,
+        ImageTextPipelineOutput,
         LDMTextToImagePipeline,
         PaintByExamplePipeline,
         SemanticStableDiffusionPipeline,
@@ -139,6 +140,9 @@
         TextToVideoSDPipeline,
         UnCLIPImageVariationPipeline,
         UnCLIPPipeline,
+        UniDiffuserModel,
+        UniDiffuserPipeline,
+        UniDiffuserTextDecoder,
         VersatileDiffusionDualGuidedPipeline,
         VersatileDiffusionImageVariationPipeline,
         VersatileDiffusionPipeline,

src/diffusers/pipelines/__init__.py

@@ -70,6 +70,7 @@
     from .stable_diffusion_safe import StableDiffusionPipelineSafe
     from .text_to_video_synthesis import TextToVideoSDPipeline
     from .unclip import UnCLIPImageVariationPipeline, UnCLIPPipeline
+    from .unidiffuser import ImageTextPipelineOutput, UniDiffuserModel, UniDiffuserPipeline, UniDiffuserTextDecoder
     from .versatile_diffusion import (
         VersatileDiffusionDualGuidedPipeline,
         VersatileDiffusionImageVariationPipeline,

src/diffusers/pipelines/unidiffuser/__init__.py

@@ -0,0 +1,20 @@
+from ...utils import (
+    OptionalDependencyNotAvailable,
+    is_torch_available,
+    is_transformers_available,
+    is_transformers_version,
+)
+
+
+try:
+    if not (is_transformers_available() and is_torch_available() and is_transformers_version(">=", "4.25.0")):
+        raise OptionalDependencyNotAvailable()
+except OptionalDependencyNotAvailable:
+    from ...utils.dummy_torch_and_transformers_objects import (
+        ImageTextPipelineOutput,
+        UniDiffuserPipeline,
+    )
+else:
+    from .modeling_text_decoder import UniDiffuserTextDecoder
+    from .modeling_uvit import UniDiffuserModel, UTransformer2DModel
+    from .pipeline_unidiffuser import ImageTextPipelineOutput, UniDiffuserPipeline