fix(api): update LPW pipeline (#298)

README.md

@@ -30,6 +30,7 @@ This is an incomplete list of new and interesting features, with links to the us
   - [hosted on Github Pages](https://ssube.github.io/onnx-web), from your CDN, or locally
   - [persists your recent images and progress as you change tabs](docs/user-guide.md#image-history)
   - queue up multiple images and retry errors
+  - translations available for English, French, German, and Spanish (please open an issue for more)
 - supports many `diffusers` pipelines
   - [txt2img](docs/user-guide.md#txt2img-tab)
   - [img2img](docs/user-guide.md#img2img-tab)

api/onnx_web/diffusers/lpw_stable_diffusion_onnx.py

@@ -8,15 +8,15 @@
 from typing import Callable, List, Optional, Union
 
 import numpy as np
+import PIL
 import torch
+from packaging import version
+from transformers import CLIPImageProcessor, CLIPTokenizer
 
 import diffusers
-import PIL
 from diffusers import OnnxRuntimeModel, OnnxStableDiffusionPipeline, SchedulerMixin
 from diffusers.pipelines.stable_diffusion import StableDiffusionPipelineOutput
-from diffusers.utils import deprecate, logging
-from packaging import version
-from transformers import CLIPFeatureExtractor, CLIPTokenizer
+from diffusers.utils import logging
 
 
 try:
@@ -201,14 +201,14 @@ def get_prompts_with_weights(pipe, prompt: List[str], max_length: int):
     return tokens, weights
 
 
-def pad_tokens_and_weights(tokens, weights, max_length, bos, eos, no_boseos_middle=True, chunk_length=77):
+def pad_tokens_and_weights(tokens, weights, max_length, bos, eos, pad, no_boseos_middle=True, chunk_length=77):
     r"""
     Pad the tokens (with starting and ending tokens) and weights (with 1.0) to max_length.
     """
     max_embeddings_multiples = (max_length - 2) // (chunk_length - 2)
     weights_length = max_length if no_boseos_middle else max_embeddings_multiples * chunk_length
     for i in range(len(tokens)):
-        tokens[i] = [bos] + tokens[i] + [eos] * (max_length - 1 - len(tokens[i]))
+        tokens[i] = [bos] + tokens[i] + [pad] * (max_length - 1 - len(tokens[i]) - 1) + [eos]
         if no_boseos_middle:
             weights[i] = [1.0] + weights[i] + [1.0] * (max_length - 1 - len(weights[i]))
         else:
@@ -347,12 +347,14 @@ def get_weighted_text_embeddings(
     # pad the length of tokens and weights
     bos = pipe.tokenizer.bos_token_id
     eos = pipe.tokenizer.eos_token_id
+    pad = getattr(pipe.tokenizer, "pad_token_id", eos)
     prompt_tokens, prompt_weights = pad_tokens_and_weights(
         prompt_tokens,
         prompt_weights,
         max_length,
         bos,
         eos,
+        pad,
         no_boseos_middle=no_boseos_middle,
         chunk_length=pipe.tokenizer.model_max_length,
     )
@@ -364,6 +366,7 @@ def get_weighted_text_embeddings(
             max_length,
             bos,
             eos,
+            pad,
             no_boseos_middle=no_boseos_middle,
             chunk_length=pipe.tokenizer.model_max_length,
         )
@@ -408,7 +411,7 @@ def get_weighted_text_embeddings(
 
 def preprocess_image(image):
     w, h = image.size
-    w, h = map(lambda x: x - x % 32, (w, h))  # resize to integer multiple of 32
+    w, h = (x - x % 32 for x in (w, h))  # resize to integer multiple of 32
     image = image.resize((w, h), resample=PIL_INTERPOLATION["lanczos"])
     image = np.array(image).astype(np.float32) / 255.0
     image = image[None].transpose(0, 3, 1, 2)
@@ -418,7 +421,7 @@ def preprocess_image(image):
 def preprocess_mask(mask, scale_factor=8):
     mask = mask.convert("L")
     w, h = mask.size
-    w, h = map(lambda x: x - x % 32, (w, h))  # resize to integer multiple of 32
+    w, h = (x - x % 32 for x in (w, h))  # resize to integer multiple of 32
     mask = mask.resize((w // scale_factor, h // scale_factor), resample=PIL_INTERPOLATION["nearest"])
     mask = np.array(mask).astype(np.float32) / 255.0
     mask = np.tile(mask, (4, 1, 1))
@@ -446,7 +449,7 @@ def __init__(
             unet: OnnxRuntimeModel,
             scheduler: SchedulerMixin,
             safety_checker: OnnxRuntimeModel,
-            feature_extractor: CLIPFeatureExtractor,
+            feature_extractor: CLIPImageProcessor,
             requires_safety_checker: bool = True,
         ):
             super().__init__(
@@ -473,7 +476,7 @@ def __init__(
             unet: OnnxRuntimeModel,
             scheduler: SchedulerMixin,
             safety_checker: OnnxRuntimeModel,
-            feature_extractor: CLIPFeatureExtractor,
+            feature_extractor: CLIPImageProcessor,
         ):
             super().__init__(
                 vae_encoder=vae_encoder,
@@ -672,7 +675,7 @@ def __call__(
         return_dict: bool = True,
         callback: Optional[Callable[[int, int, np.ndarray], None]] = None,
         is_cancelled_callback: Optional[Callable[[], bool]] = None,
-        callback_steps: Optional[int] = 1,
+        callback_steps: int = 1,
         **kwargs,
     ):
         r"""
@@ -749,10 +752,6 @@ def __call__(
             list of `bool`s denoting whether the corresponding generated image likely represents "not-safe-for-work"
             (nsfw) content, according to the `safety_checker`.
         """
-        message = "Please use `image` instead of `init_image`."
-        init_image = deprecate("init_image", "0.14.0", message, take_from=kwargs)
-        image = init_image or image
-
         # 0. Default height and width to unet
         height = height or self.unet.config.sample_size * self.vae_scale_factor
         width = width or self.unet.config.sample_size * self.vae_scale_factor
@@ -887,7 +886,7 @@ def text2img(
         output_type: Optional[str] = "pil",
         return_dict: bool = True,
         callback: Optional[Callable[[int, int, np.ndarray], None]] = None,
-        callback_steps: Optional[int] = 1,
+        callback_steps: int = 1,
         **kwargs,
     ):
         r"""
@@ -978,7 +977,7 @@ def img2img(
         output_type: Optional[str] = "pil",
         return_dict: bool = True,
         callback: Optional[Callable[[int, int, np.ndarray], None]] = None,
-        callback_steps: Optional[int] = 1,
+        callback_steps: int = 1,
         **kwargs,
     ):
         r"""
@@ -1070,7 +1069,7 @@ def inpaint(
         output_type: Optional[str] = "pil",
         return_dict: bool = True,
         callback: Optional[Callable[[int, int, np.ndarray], None]] = None,
-        callback_steps: Optional[int] = 1,
+        callback_steps: int = 1,
         **kwargs,
     ):
         r"""