add Stable Diffusion TensorRT Inpainting pipeline (#3642)

* add tensorrt inpaint pipeline
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>

* run make style
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>

---------
Signed-off-by: Asfiya Baig <asfiyab@nvidia.com>
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>

examples/community/README.md

@@ -37,6 +37,7 @@ If a community doesn't work as expected, please open an issue and ping the autho
 | TensorRT Stable Diffusion Image to Image Pipeline                                                                                                    | Accelerates the Stable Diffusion Image2Image Pipeline using TensorRT                                                                                                                                                                                                                                                                                                                                                                                                                                      | [TensorRT Stable Diffusion Image to Image Pipeline](#tensorrt-image2image-stable-diffusion-pipeline)      | - |              [Asfiya Baig](https://github.com/asfiyab-nvidia) |
 | Stable Diffusion IPEX Pipeline | Accelerate Stable Diffusion inference pipeline with BF16/FP32 precision on Intel Xeon CPUs with [IPEX](https://github.com/intel/intel-extension-for-pytorch) | [Stable Diffusion on IPEX](#stable-diffusion-on-ipex) | - | [Yingjie Han](https://github.com/yingjie-han/) | 
 | CLIP Guided Images Mixing Stable Diffusion Pipeline | Сombine images using usual diffusion models. | [CLIP Guided Images Mixing Using Stable Diffusion](#clip-guided-images-mixing-with-stable-diffusion) | - | [Karachev Denis](https://github.com/TheDenk) |  
+| TensorRT Stable Diffusion Inpainting Pipeline                                                                                                    | Accelerates the Stable Diffusion Inpainting Pipeline using TensorRT                                                                                                                                                                                                                                                                                                                                                                                                                                      | [TensorRT Stable Diffusion Inpainting Pipeline](#tensorrt-inpainting-stable-diffusion-pipeline)      | - |              [Asfiya Baig](https://github.com/asfiyab-nvidia) |
 
 To load a custom pipeline you just need to pass the `custom_pipeline` argument to `DiffusionPipeline`, as one of the files in `diffusers/examples/community`. Feel free to send a PR with your own pipelines, we will merge them quickly.
 ```py
@@ -1630,3 +1631,45 @@ image = pipeline(
 ```
 ![mixture_tiling_results](https://huggingface.co/datasets/kadirnar/diffusers_readme_images/resolve/main/mixture_tiling.png)
 
+### TensorRT Inpainting Stable Diffusion Pipeline
+
+The TensorRT Pipeline can be used to accelerate the Inpainting Stable Diffusion Inference run.
+
+NOTE: The ONNX conversions and TensorRT engine build may take up to 30 minutes.
+
+```python
+import requests
+from io import BytesIO
+from PIL import Image
+import torch
+from diffusers import PNDMScheduler
+from diffusers.pipelines.stable_diffusion import StableDiffusionImg2ImgPipeline
+
+# Use the PNDMScheduler scheduler here instead
+scheduler = PNDMScheduler.from_pretrained("stabilityai/stable-diffusion-2-inpainting", subfolder="scheduler")
+
+
+pipe = StableDiffusionImg2ImgPipeline.from_pretrained("stabilityai/stable-diffusion-2-inpainting",
+    custom_pipeline="stable_diffusion_tensorrt_inpaint",
+    revision='fp16',
+    torch_dtype=torch.float16,
+    scheduler=scheduler,
+    )
+
+# re-use cached folder to save ONNX models and TensorRT Engines
+pipe.set_cached_folder("stabilityai/stable-diffusion-2-inpainting", revision='fp16',)
+
+pipe = pipe.to("cuda")
+
+url = "https://raw.githubusercontent.com/CompVis/latent-diffusion/main/data/inpainting_examples/overture-creations-5sI6fQgYIuo.png"
+response = requests.get(url)
+input_image = Image.open(BytesIO(response.content)).convert("RGB")
+
+mask_url = "https://raw.githubusercontent.com/CompVis/latent-diffusion/main/data/inpainting_examples/overture-creations-5sI6fQgYIuo_mask.png"
+response = requests.get(mask_url)
+mask_image = Image.open(BytesIO(response.content)).convert("RGB")
+
+prompt = "a mecha robot sitting on a bench"
+image = pipe(prompt, image=input_image, mask_image=mask_image, strength=0.75,).images[0]
+image.save('tensorrt_inpaint_mecha_robot.png')
+```
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