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3edc87f684
* fix(deps): update machine-learning * updated ruff command * use isinstance --------- Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: mertalev <101130780+mertalev@users.noreply.github.com>
198 lines
7.1 KiB
Python
198 lines
7.1 KiB
Python
import json
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from abc import abstractmethod
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from functools import cached_property
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from io import BytesIO
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from pathlib import Path
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from typing import Any, Literal
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import numpy as np
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import onnxruntime as ort
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from PIL import Image
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from tokenizers import Encoding, Tokenizer
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from app.config import clean_name, log
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from app.models.transforms import crop, get_pil_resampling, normalize, resize, to_numpy
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from app.schemas import ModelType, ndarray_f32, ndarray_i32
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from .base import InferenceModel
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class BaseCLIPEncoder(InferenceModel):
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_model_type = ModelType.CLIP
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def __init__(
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self,
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model_name: str,
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cache_dir: str | None = None,
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mode: Literal["text", "vision"] | None = None,
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**model_kwargs: Any,
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) -> None:
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self.mode = mode
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super().__init__(model_name, cache_dir, **model_kwargs)
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def _load(self) -> None:
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if self.mode == "text" or self.mode is None:
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log.debug(f"Loading clip text model '{self.model_name}'")
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self.text_model = ort.InferenceSession(
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self.textual_path.as_posix(),
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sess_options=self.sess_options,
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providers=self.providers,
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provider_options=self.provider_options,
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)
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log.debug(f"Loaded clip text model '{self.model_name}'")
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if self.mode == "vision" or self.mode is None:
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log.debug(f"Loading clip vision model '{self.model_name}'")
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self.vision_model = ort.InferenceSession(
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self.visual_path.as_posix(),
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sess_options=self.sess_options,
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providers=self.providers,
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provider_options=self.provider_options,
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)
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log.debug(f"Loaded clip vision model '{self.model_name}'")
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def _predict(self, image_or_text: Image.Image | str) -> ndarray_f32:
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if isinstance(image_or_text, bytes):
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image_or_text = Image.open(BytesIO(image_or_text))
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match image_or_text:
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case Image.Image():
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if self.mode == "text":
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raise TypeError("Cannot encode image as text-only model")
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outputs: ndarray_f32 = self.vision_model.run(None, self.transform(image_or_text))[0][0]
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case str():
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if self.mode == "vision":
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raise TypeError("Cannot encode text as vision-only model")
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outputs = self.text_model.run(None, self.tokenize(image_or_text))[0][0]
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case _:
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raise TypeError(f"Expected Image or str, but got: {type(image_or_text)}")
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return outputs
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@abstractmethod
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def tokenize(self, text: str) -> dict[str, ndarray_i32]:
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pass
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@abstractmethod
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def transform(self, image: Image.Image) -> dict[str, ndarray_f32]:
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pass
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@property
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def textual_dir(self) -> Path:
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return self.cache_dir / "textual"
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@property
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def visual_dir(self) -> Path:
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return self.cache_dir / "visual"
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@property
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def model_cfg_path(self) -> Path:
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return self.cache_dir / "config.json"
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@property
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def textual_path(self) -> Path:
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return self.textual_dir / "model.onnx"
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@property
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def visual_path(self) -> Path:
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return self.visual_dir / "model.onnx"
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@property
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def tokenizer_file_path(self) -> Path:
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return self.textual_dir / "tokenizer.json"
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@property
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def tokenizer_cfg_path(self) -> Path:
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return self.textual_dir / "tokenizer_config.json"
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@property
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def preprocess_cfg_path(self) -> Path:
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return self.visual_dir / "preprocess_cfg.json"
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@property
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def cached(self) -> bool:
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return self.textual_path.is_file() and self.visual_path.is_file()
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@cached_property
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def model_cfg(self) -> dict[str, Any]:
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log.debug(f"Loading model config for CLIP model '{self.model_name}'")
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model_cfg: dict[str, Any] = json.load(self.model_cfg_path.open())
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log.debug(f"Loaded model config for CLIP model '{self.model_name}'")
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return model_cfg
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@cached_property
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def tokenizer_file(self) -> dict[str, Any]:
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log.debug(f"Loading tokenizer file for CLIP model '{self.model_name}'")
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tokenizer_file: dict[str, Any] = json.load(self.tokenizer_file_path.open())
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log.debug(f"Loaded tokenizer file for CLIP model '{self.model_name}'")
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return tokenizer_file
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@cached_property
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def tokenizer_cfg(self) -> dict[str, Any]:
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log.debug(f"Loading tokenizer config for CLIP model '{self.model_name}'")
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tokenizer_cfg: dict[str, Any] = json.load(self.tokenizer_cfg_path.open())
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log.debug(f"Loaded tokenizer config for CLIP model '{self.model_name}'")
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return tokenizer_cfg
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@cached_property
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def preprocess_cfg(self) -> dict[str, Any]:
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log.debug(f"Loading visual preprocessing config for CLIP model '{self.model_name}'")
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preprocess_cfg: dict[str, Any] = json.load(self.preprocess_cfg_path.open())
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log.debug(f"Loaded visual preprocessing config for CLIP model '{self.model_name}'")
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return preprocess_cfg
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class OpenCLIPEncoder(BaseCLIPEncoder):
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def __init__(
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self,
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model_name: str,
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cache_dir: str | None = None,
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mode: Literal["text", "vision"] | None = None,
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**model_kwargs: Any,
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) -> None:
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super().__init__(clean_name(model_name), cache_dir, mode, **model_kwargs)
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def _load(self) -> None:
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super()._load()
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context_length = self.model_cfg["text_cfg"]["context_length"]
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pad_token = self.tokenizer_cfg["pad_token"]
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size = self.preprocess_cfg["size"]
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self.size = size[0] if isinstance(size, list) else size
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self.resampling = get_pil_resampling(self.preprocess_cfg["interpolation"])
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self.mean = np.array(self.preprocess_cfg["mean"], dtype=np.float32)
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self.std = np.array(self.preprocess_cfg["std"], dtype=np.float32)
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log.debug(f"Loading tokenizer for CLIP model '{self.model_name}'")
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self.tokenizer: Tokenizer = Tokenizer.from_file(self.tokenizer_file_path.as_posix())
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pad_id = self.tokenizer.token_to_id(pad_token)
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self.tokenizer.enable_padding(length=context_length, pad_token=pad_token, pad_id=pad_id)
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self.tokenizer.enable_truncation(max_length=context_length)
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log.debug(f"Loaded tokenizer for CLIP model '{self.model_name}'")
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def tokenize(self, text: str) -> dict[str, ndarray_i32]:
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tokens: Encoding = self.tokenizer.encode(text)
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return {"text": np.array([tokens.ids], dtype=np.int32)}
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def transform(self, image: Image.Image) -> dict[str, ndarray_f32]:
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image = resize(image, self.size)
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image = crop(image, self.size)
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image_np = to_numpy(image)
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image_np = normalize(image_np, self.mean, self.std)
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return {"image": np.expand_dims(image_np.transpose(2, 0, 1), 0)}
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class MCLIPEncoder(OpenCLIPEncoder):
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def tokenize(self, text: str) -> dict[str, ndarray_i32]:
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tokens: Encoding = self.tokenizer.encode(text)
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return {
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"input_ids": np.array([tokens.ids], dtype=np.int32),
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"attention_mask": np.array([tokens.attention_mask], dtype=np.int32),
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}
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