mirror of
https://github.com/comfyanonymous/ComfyUI.git
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72 lines
3.8 KiB
Python
72 lines
3.8 KiB
Python
from transformers import Qwen2Tokenizer
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from comfy import sd1_clip
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import comfy.text_encoders.llama
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import os
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import torch
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import numbers
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class Qwen25_7BVLITokenizer(sd1_clip.SDTokenizer):
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def __init__(self, embedding_directory=None, tokenizer_data={}):
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tokenizer_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "qwen25_tokenizer")
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super().__init__(tokenizer_path, pad_with_end=False, embedding_size=3584, embedding_key='qwen25_7b', tokenizer_class=Qwen2Tokenizer, has_start_token=False, has_end_token=False, pad_to_max_length=False, max_length=99999999, min_length=1, pad_token=151643, tokenizer_data=tokenizer_data)
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class QwenImageTokenizer(sd1_clip.SD1Tokenizer):
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def __init__(self, embedding_directory=None, tokenizer_data={}):
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super().__init__(embedding_directory=embedding_directory, tokenizer_data=tokenizer_data, name="qwen25_7b", tokenizer=Qwen25_7BVLITokenizer)
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self.llama_template = "<|im_start|>system\nDescribe the image by detailing the color, shape, size, texture, quantity, text, spatial relationships of the objects and background:<|im_end|>\n<|im_start|>user\n{}<|im_end|>\n<|im_start|>assistant\n"
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def tokenize_with_weights(self, text, return_word_ids=False, llama_template=None,**kwargs):
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if llama_template is None:
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llama_text = self.llama_template.format(text)
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else:
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llama_text = llama_template.format(text)
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return super().tokenize_with_weights(llama_text, return_word_ids=return_word_ids, **kwargs)
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class Qwen25_7BVLIModel(sd1_clip.SDClipModel):
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def __init__(self, device="cpu", layer="last", layer_idx=None, dtype=None, attention_mask=True, model_options={}):
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super().__init__(device=device, layer=layer, layer_idx=layer_idx, textmodel_json_config={}, dtype=dtype, special_tokens={"pad": 151643}, layer_norm_hidden_state=False, model_class=comfy.text_encoders.llama.Qwen25_7BVLI, enable_attention_masks=attention_mask, return_attention_masks=attention_mask, model_options=model_options)
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class QwenImageTEModel(sd1_clip.SD1ClipModel):
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def __init__(self, device="cpu", dtype=None, model_options={}):
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super().__init__(device=device, dtype=dtype, name="qwen25_7b", clip_model=Qwen25_7BVLIModel, model_options=model_options)
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def encode_token_weights(self, token_weight_pairs):
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out, pooled, extra = super().encode_token_weights(token_weight_pairs)
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tok_pairs = token_weight_pairs["qwen25_7b"][0]
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count_im_start = 0
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for i, v in enumerate(tok_pairs):
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elem = v[0]
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if not torch.is_tensor(elem):
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if isinstance(elem, numbers.Integral):
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if elem == 151644 and count_im_start < 2:
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template_end = i
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count_im_start += 1
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if out.shape[1] > (template_end + 3):
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if tok_pairs[template_end + 1][0] == 872:
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if tok_pairs[template_end + 2][0] == 198:
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template_end += 3
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out = out[:, template_end:]
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extra["attention_mask"] = extra["attention_mask"][:, template_end:]
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if extra["attention_mask"].sum() == torch.numel(extra["attention_mask"]):
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extra.pop("attention_mask") # attention mask is useless if no masked elements
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return out, pooled, extra
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def te(dtype_llama=None, llama_scaled_fp8=None):
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class QwenImageTEModel_(QwenImageTEModel):
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def __init__(self, device="cpu", dtype=None, model_options={}):
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if llama_scaled_fp8 is not None and "scaled_fp8" not in model_options:
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model_options = model_options.copy()
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model_options["scaled_fp8"] = llama_scaled_fp8
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if dtype_llama is not None:
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dtype = dtype_llama
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super().__init__(device=device, dtype=dtype, model_options=model_options)
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return QwenImageTEModel_
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