tokenization_minicpmo_fast.py

# coding=utf-8
# Copyright 2025 The OpenBMB Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from transformers import Qwen2TokenizerFast


class MiniCPMOTokenizerFast(Qwen2TokenizerFast):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        # image
        self.im_start = "<|vision_start|>"
        self.im_end = "<|vision_end|>"
        self.slice_start = "<|image_pad|>"
        self.slice_end = "<|image_pad|>"

        # audio
        self.audio_start = "<|box_start|>"
        self.audio_end = "<|box_end|>"
        self.spk_start = "<|quad_start|>"
        self.spk_end = "<|quad_end|>"
        self.tts_start = "<|object_ref_start|>"
        self.tts_end = "<|object_ref_end|>"

    @property
    def eos_id(self):
        return self.eos_token_id

    @property
    def bos_id(self):
        return self.bos_token_id

    @property
    def unk_id(self):
        return self.unk_token_id

    @property
    def im_start_id(self):
        return self.convert_tokens_to_ids(self.im_start)

    @property
    def im_end_id(self):
        return self.convert_tokens_to_ids(self.im_end)

    @property
    def slice_start_id(self):
        return self.convert_tokens_to_ids(self.slice_start)

    @property
    def slice_end_id(self):
        return self.convert_tokens_to_ids(self.slice_end)

    @property
    def im_id_start_id(self):
        return self.convert_tokens_to_ids(self.im_id_start)

    @property
    def im_id_end_id(self):
        return self.convert_tokens_to_ids(self.im_id_end)

    @property
    def audio_start_id(self):
        return self.convert_tokens_to_ids(self.audio_start)

    @property
    def audio_end_id(self):
        return self.convert_tokens_to_ids(self.audio_end)

    @property
    def spk_start_id(self):
        return self.convert_tokens_to_ids(self.spk_start)

    @property
    def spk_end_id(self):
        return self.convert_tokens_to_ids(self.spk_end)

    @property
    def tts_start_id(self):
        return self.convert_tokens_to_ids(self.tts_start)

    @property
    def tts_end_id(self):
        return self.convert_tokens_to_ids(self.tts_end)

    @staticmethod
    def escape(text: str) -> str:
        return text

    @staticmethod
    def unescape(text: str) -> str:
        return text