modelscope--ms-swift
wehub-resource-sync
117 行
5.7 KiB
Python
117 行
5.7 KiB
Python
# Copyright (c) ModelScope Contributors. All rights reserved.
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import torch
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from dataclasses import dataclass, field
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from typing import Any, Dict, List, Literal, Optional
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from ..base import Template
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from ..constant import MLLMTemplateType
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from ..register import TemplateMeta, register_template
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from ..template_inputs import StdTemplateInputs
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from ..utils import Context, Prompt, findall
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@dataclass
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class HunYuanVLTemplateMeta(TemplateMeta):
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prefix: Prompt = field(default_factory=lambda: ['<｜hy_begin▁of▁sentence｜>'])
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prompt: Prompt = field(default_factory=lambda: ['{{QUERY}}<｜hy_User｜>'])
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chat_sep: Optional[Prompt] = field(default_factory=lambda: ['<｜hy_Assistant｜><｜hy_begin▁of▁sentence｜>'])
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suffix: Prompt = field(default_factory=lambda: ['<｜hy_Assistant｜>'])
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system_prefix: Optional[Prompt] = field(
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default_factory=lambda: ['<｜hy_begin▁of▁sentence｜>{{SYSTEM}}<｜hy_place▁holder▁no▁3｜>'])
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class HunYuanVLTemplate(Template):
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image_token_id = 120120
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placeholder_tokens = ['<｜hy_place▁holder▁no▁102｜>']
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# support_padding_free = True # position_ids with batch_dim of 0 does not support padding_free
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def replace_tag(self, media_type: Literal['image', 'video', 'audio'], index: int,
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inputs: StdTemplateInputs) -> List[Context]:
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assert media_type == 'image'
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if self.mode == 'vllm':
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return ['<｜hy_place▁holder▁no▁100｜><｜hy_place▁holder▁no▁102｜><｜hy_place▁holder▁no▁101｜>']
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return [[-100]]
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def _encode(self, inputs: StdTemplateInputs) -> Dict[str, Any]:
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encoded = super()._encode(inputs)
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input_ids = encoded['input_ids']
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labels = encoded['labels']
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loss_scale = encoded.get('loss_scale', None)
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idx_list = findall(input_ids, -100)
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processor = self.processor
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images = inputs.images
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if images:
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image_inputs = processor.image_processor(images=images, return_tensors='pt')
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image_grid_thw = image_inputs['image_grid_thw']
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merge_size = processor.image_processor.merge_size
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def _get_new_tokens(i):
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grid_h, grid_w = image_grid_thw[i][-2:]
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patch_h = grid_h // merge_size
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patch_w = grid_w // merge_size
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img_tokens: List[int] = [self.image_token_id] * (patch_h * (patch_w + 1) + 2)
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return img_tokens
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encoded['input_ids'], encoded['labels'], encoded['loss_scale'] = self._extend_tokens(
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input_ids, labels, loss_scale, idx_list, _get_new_tokens)
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encoded['pixel_values'] = image_inputs['pixel_values']
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encoded['image_grid_thw'] = image_grid_thw
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input_ids = encoded['input_ids']
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position_ids = torch.arange(len(input_ids))
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position_ids_w = torch.arange(len(input_ids))
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position_ids_h = torch.arange(len(input_ids))
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position_ids_t = torch.arange(len(input_ids))
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image_tokens_cumsum = [0]
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for i in range(len(image_grid_thw)):
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grid_h, grid_w = image_grid_thw[i][-2:]
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patch_h = grid_h // merge_size
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patch_w = grid_w // merge_size
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num_image_tokens = patch_h * (patch_w + 1) + 2
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image_tokens_cumsum.append(image_tokens_cumsum[-1] + int(num_image_tokens))
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image_token_pos_indices = torch.where(torch.tensor(input_ids) == self.image_token_id)
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start_pos = image_token_pos_indices[0][image_tokens_cumsum[i]] + 1
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replace_num = (patch_w + 1) * patch_h
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position_ids_w[start_pos:start_pos + replace_num] = torch.tensor(
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list(range(patch_w + 1)) * patch_h, dtype=torch.int64)
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patch_h_list = []
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for h in range(patch_h):
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patch_h_list += [h] * (patch_w + 1)
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position_ids_h[start_pos:start_pos + replace_num] = torch.tensor(patch_h_list, dtype=torch.int64)
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position_ids_t[start_pos:start_pos + replace_num] = 0
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position_ids = torch.stack([position_ids, position_ids_w, position_ids_h, position_ids_t]).unsqueeze(0)
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encoded['position_ids'] = position_ids
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attention_mask = torch.tensor(input_ids).ne(processor.pad_id)
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encoded['attention_mask'] = attention_mask
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return encoded
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def _post_encode(self, model, inputs: Dict[str, Any]) -> Dict[str, Any]:
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if not self.is_training:
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return inputs
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input_ids = inputs['input_ids']
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pixel_values = inputs.get('pixel_values')
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image_grid_thw = inputs.get('image_grid_thw')
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base_model = self.get_base_model(model)
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inputs_embeds = base_model.model.embed_tokens(input_ids)
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if pixel_values is not None:
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pixel_values = pixel_values.to(base_model.dtype)
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image_embeds = base_model.vit(pixel_values, image_grid_thw)
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image_embeds = image_embeds.to(input_ids.device, non_blocking=True)
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image_mask, _ = base_model.get_placeholder_mask(
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input_ids, inputs_embeds=inputs_embeds, image_features=image_embeds)
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inputs_embeds = inputs_embeds.masked_scatter(image_mask, image_embeds)
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return {'inputs_embeds': inputs_embeds}
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def _pad_3d_position_ids(self,
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position_ids: List[torch.Tensor],
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padding_value: float = 0.,
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batch_dim: int = 1) -> torch.Tensor:
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batch_dim = 0
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return super()._pad_3d_position_ids(position_ids, padding_value, batch_dim)
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register_template(HunYuanVLTemplateMeta(MLLMTemplateType.hunyuan_ocr, template_cls=HunYuanVLTemplate))
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