1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
import open_clip.tokenizer
import torch
from modules import sd_hijack_clip, devices
from modules.shared import opts
tokenizer = open_clip.tokenizer._tokenizer
class FrozenOpenCLIPEmbedderWithCustomWords(sd_hijack_clip.FrozenCLIPEmbedderWithCustomWordsBase):
def __init__(self, wrapped, hijack):
super().__init__(wrapped, hijack)
self.comma_token = [v for k, v in tokenizer.encoder.items() if k == ',</w>'][0]
self.id_start = tokenizer.encoder["<start_of_text>"]
self.id_end = tokenizer.encoder["<end_of_text>"]
self.id_pad = 0
self.is_trainable = getattr(wrapped, 'is_trainable', False)
self.input_key = getattr(wrapped, 'input_key', 'txt')
self.legacy_ucg_val = None
def tokenize(self, texts):
assert not opts.use_old_emphasis_implementation, 'Old emphasis implementation not supported for Open Clip'
tokenized = [tokenizer.encode(text) for text in texts]
return tokenized
def encode_with_transformers(self, tokens):
# set self.wrapped.layer_idx here according to opts.CLIP_stop_at_last_layers
z = self.wrapped.encode_with_transformer(tokens)
return z
def encode_embedding_init_text(self, init_text, nvpt):
ids = tokenizer.encode(init_text)
ids = torch.asarray([ids], device=devices.device, dtype=torch.int)
embedded = self.wrapped.model.token_embedding.wrapped(ids).squeeze(0)
return embedded
|
