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processing_minicpmo.py

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+# 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.
+"""
+Processor class for MiniCPMO.
+"""
+
+import math
+import re
+from typing import List
+from typing import Literal
+from typing import Optional
+from typing import Union
+
+import numpy as np
+import torch
+import torchaudio
+from transformers.image_utils import ImageInput
+from transformers.processing_utils import ProcessorMixin
+from transformers.tokenization_utils_base import PreTokenizedInput
+from transformers.tokenization_utils_base import TextInput
+from transformers.utils import TensorType
+
+try:
+    from image_processing_minicpmv import MiniCPMOBatchFeature
+except ImportError:
+    from .image_processing_minicpmv import MiniCPMOBatchFeature
+
+
+class MiniCPMOProcessor(ProcessorMixin):
+    r"""
+    Constructs a MiniCPMV processor which wraps a MiniCPMV image processor and a MiniCPMV tokenizer into a single processor.
+
+    [`MiniCPMVProcessor`] offers all the functionalities of [`MiniCPMVImageProcessor`] and [`LlamaTokenizerWrapper`]. See the
+    [`~MiniCPMVProcessor.__call__`] and [`~MiniCPMVProcessor.decode`] for more information.
+
+    Args:
+        image_processor ([`MiniCPMVImageProcessor`], *optional*):
+            The image processor is a required input.
+        tokenizer ([`LlamaTokenizerWrapper`], *optional*):
+            The tokenizer is a required input.
+    """
+
+    attributes = ["image_processor", "feature_extractor", "tokenizer"]
+    feature_extractor_class = "WhisperFeatureExtractor"
+    image_processor_class = "AutoImageProcessor"
+    tokenizer_class = "AutoTokenizer"
+
+    def __init__(self, image_processor=None, feature_extractor=None, tokenizer=None):
+        super().__init__(image_processor, feature_extractor, tokenizer)
+        self.version = image_processor.version
+
+    def __call__(
+        self,
+        text: Union[TextInput, PreTokenizedInput, List[TextInput], List[PreTokenizedInput]],
+        images: ImageInput = None,
+        audios: Union[np.ndarray, List[np.ndarray], List[List[np.ndarray]]] = None,
+        audio_parts: Optional[list] = None,
+        max_length: Optional[int] = None,
+        do_pad: Optional[bool] = True,
+        max_slice_nums: int = None,
+        use_image_id: bool = True,
+        chunk_input: bool = False,
+        return_tensors: Optional[Union[str, TensorType]] = TensorType.PYTORCH,
+        sampling_rate: Optional[int] = 16000,
+        **kwargs,
+    ) -> MiniCPMOBatchFeature:
+        if images is not None:
+            image_inputs = self.image_processor(
+                images, do_pad=do_pad, max_slice_nums=max_slice_nums, return_tensors=return_tensors
+            )
+        else:
+            image_inputs = None
+
+        if audios is not None:
+            audio_features, audio_feature_lens, audio_phs = self.audio_feature_extract(
+                audios, audio_parts, chunk_input, sampling_rate
+            )
+        else:
+            audio_features, audio_feature_lens, audio_phs = [], [], []
+
+        model_inputs = self._convert_omni_to_inputs(
+            image_inputs,
+            audio_phs,
+            text,
+            max_slice_nums=max_slice_nums,
+            use_image_id=use_image_id,
+            max_length=max_length,
+            **kwargs,
+        )
+
+        model_inputs["audio_features"] = audio_features
+        model_inputs["audio_feature_lens"] = audio_feature_lens
+
+        return MiniCPMOBatchFeature(data={**model_inputs})
+
+    def get_audio_placeholder(self, audio_lens, chunk_input, chunk_length):
+        pool_step = 2
+        feature_lens = math.ceil(audio_lens / self.feature_extractor.hop_length)
+
+        feature_lens = (feature_lens - 1) // 2 + 1
+        output_lens = (feature_lens - pool_step) // pool_step + 1
+
+        if chunk_input:
+            fbank_feat_in_chunk = int(chunk_length * 100)
+            cnn_feat_in_chunk = (fbank_feat_in_chunk - 1) // 2 + 1
+            audio_embeds_in_chunk = (cnn_feat_in_chunk - pool_step) // pool_step + 1
+            num_audio_chunks = (output_lens + audio_embeds_in_chunk - 1) // audio_embeds_in_chunk
+
+            place_holders = ""
+            total_unk_len = 0
+            for _ in range(num_audio_chunks):
+                unk_len = min(audio_embeds_in_chunk, output_lens - total_unk_len)
+                place_holders += self.tokenizer.audio_start + "<unk>" * unk_len + self.tokenizer.audio_end
+                total_unk_len += unk_len
+            audio_placeholder = place_holders
+        else:
+            audio_placeholder = self.tokenizer.audio_start + "<unk>" * output_lens + self.tokenizer.audio_end
+
+        return audio_placeholder
+
+    def audio_feature_extract(
+        self,
+        audios: Union[np.ndarray, List[np.ndarray], List[List[np.ndarray]]],
+        audio_parts: Optional[list] = None,
+        chunk_input: Optional[bool] = False,
+        sampling_rate: Optional[int] = None,
+        chunk_length: Optional[int] = 1,
+        **kwargs,
+    ):
+        if isinstance(audios, np.ndarray):
+            audios_list = [[audios]]
+        elif isinstance(audios[0], np.ndarray):
+            audios_list = [audios]
+        else:
+            audios_list = audios
+
+        if audio_parts is not None:
+            assert len(audio_parts) == len(audios_list)
+            for parts, audios in zip(audio_parts, audios_list):
+                assert len(parts) == len(audios)
+
+        audio_feature_lens_list = []
+        audio_ph_list = []
+
+        audio_features_all = []
+
+        # audio placeholder not dependent on audio_parts
+        for audios in audios_list:
+            if audios:
+                audio_ph_list.append([self.get_audio_placeholder(len(a), chunk_input, chunk_length) for a in audios])
+            else:
+                audio_ph_list.append([])
+
+        for idx, audios in enumerate(audios_list):
+            if audio_parts is not None:
+                # same audio part merge
+                audio_part = audio_parts[idx]
+                merge_audio = []
+                cur_audio = []
+                for aid, (part, audio) in enumerate(zip(audio_part, audios)):
+                    if aid == 0 or audio_part[aid] == audio_part[aid - 1]:
+                        cur_audio.append(audio)
+                    else:
+                        merge_audio.append(np.hstack(cur_audio))
+                        cur_audio = [audio]
+                if cur_audio:
+                    merge_audio.append(np.hstack(cur_audio))
+
+            else:
+                merge_audio = audios
+
+            audio_feature_lens = []
+
+            # If the audio exceeds 30 seconds, split it into chunks every 30 seconds.
+            final_merge_audio = []
+            max_audio_inp_len = 30 * sampling_rate
+            for audio in merge_audio:
+                if len(audio) <= max_audio_inp_len:
+                    final_merge_audio.append(audio)
+                else:
+                    for i in range(math.ceil(len(audio) / max_audio_inp_len)):
+                        final_merge_audio.append(audio[i * max_audio_inp_len : (i + 1) * max_audio_inp_len])
+
+            if audios:
+                audio_inputs = self.feature_extractor(
+                    final_merge_audio,
+                    sampling_rate=sampling_rate,
+                    return_attention_mask=True,
+                    padding="max_length",
+                    return_tensors="pt",
+                    **kwargs,
+                )
+                audio_feature = audio_inputs["input_features"]
+                actual_lens = audio_inputs["attention_mask"].sum(dim=1)
+
+                for feat, lens in zip(audio_feature, actual_lens):
+                    audio_features_all.append(feat[:, :lens])
+                    audio_feature_lens.append(lens)
+
+                audio_feature_lens = torch.hstack(audio_feature_lens)
+                audio_feature_lens_list.append(audio_feature_lens)
+            else:
+                audio_feature_lens_list.append([])
+
+        if audio_features_all:
+            audio_features = [i.permute(1, 0) for i in audio_features_all]
+            audio_features = torch.nn.utils.rnn.pad_sequence(
+                audio_features, batch_first=True, padding_value=0.0
+            ).permute(0, 2, 1)
+        else:
+            audio_features = []
+
+        return audio_features, audio_feature_lens_list, audio_ph_list
+
+    # Copied from transformers.models.clip.processing_clip.CLIPProcessor.batch_decode with CLIP->Llama
+    def batch_decode(self, *args, **kwargs):
+        """
+        This method forwards all its arguments to LlamaTokenizerFast's [`~PreTrainedTokenizer.batch_decode`]. Please
+        refer to the docstring of this method for more information.
+        """
+        output_ids = args[0]
+        result_text = []
+        for result in output_ids:
+            result = result[result != 0]
+            if result[0] == self.tokenizer.bos_id:
+                result = result[1:]
+            if result[-1] == self.tokenizer.eos_id:
+                result = result[:-1]
+            result_text.append(self.tokenizer.decode(result, *args[1:], **kwargs).strip())
+        return result_text
+        # return self.tokenizer.batch_decode(*args, **kwargs)
+
+    # Copied from transformers.models.clip.processing_clip.CLIPProcessor.decode with CLIP->Llama
+    def decode(self, *args, **kwargs):
+        """
+        This method forwards all its arguments to LlamaTokenizerFast's [`~PreTrainedTokenizer.decode`]. Please refer to
+        the docstring of this method for more information.
+        """
+        result = args[0]
+        result = result[result != 0]
+        if result[0] == self.tokenizer.bos_id:
+            result = result[1:]
+        if result[-1] == self.tokenizer.eos_id or (
+            hasattr(self.tokenizer, "eot_id") and result[-1] == self.tokenizer.eot_id
+        ):
+            result = result[:-1]
+        return self.tokenizer.decode(result, *args[1:], **kwargs).strip()
+
+    def _convert(self, input_str, max_inp_length: Optional[int] = None, **kwargs):
+        input_ids = self.tokenizer.encode(input_str, **kwargs)
+        if max_inp_length is not None:
+            input_ids = input_ids[:max_inp_length]
+        input_ids = torch.tensor(input_ids, dtype=torch.int32)
+
+        ## image bound
+        start_cond = (input_ids == self.tokenizer.im_start_id) | (input_ids == self.tokenizer.slice_start_id)
+        end_cond = (input_ids == self.tokenizer.im_end_id) | (input_ids == self.tokenizer.slice_end_id)
+
+        image_start_idx = torch.where(start_cond)[0]
+        image_start_idx += 1
+        image_end_idx = torch.where(end_cond)[0]
+
+        valid_image_nums = max(len(image_start_idx), len(image_end_idx))
+
+        image_bounds = torch.hstack(
+            [
+                image_start_idx[:valid_image_nums].unsqueeze(-1),
+                image_end_idx[:valid_image_nums].unsqueeze(-1),
+            ]
+        )
+
+        ##  audio bound
+        audio_start_idx = torch.where(input_ids == self.tokenizer.audio_start_id)[0]
+        audio_end_idx = torch.where(input_ids == self.tokenizer.audio_end_id)[0]
+        assert len(audio_start_idx) == len(audio_end_idx)
+        audio_bounds = torch.hstack([(audio_start_idx + 1).unsqueeze(-1), audio_end_idx.unsqueeze(-1)])
+
+        spk_start_idx = torch.where(input_ids == self.tokenizer.spk_start_id)[0]
+        spk_end_idx = torch.where(input_ids == self.tokenizer.spk_end_id)[0]
+        assert len(spk_start_idx) == len(spk_end_idx)
+        spk_bounds = torch.hstack([(spk_start_idx + 1).unsqueeze(-1), spk_end_idx.unsqueeze(-1)])
+
+        return input_ids, image_bounds, audio_bounds, spk_bounds
+
+    def _convert_omni_to_inputs(
+        self,
+        images,
+        audio_phs,
+        texts: Union[str, List[str]],
+        truncation=None,
+        max_length=None,
+        max_slice_nums=None,
+        use_image_id=None,
+        return_tensors=None,
+        **kwargs,
+    ):
+        if images is None and audio_phs is None:
+            model_inputs = self.tokenizer(
+                texts, return_tensors=return_tensors, truncation=truncation, max_length=max_length, **kwargs
+            )
+            return MiniCPMOBatchFeature(data={**model_inputs})
+
+        image_tag = "(<image>./</image>)"
+        image_pattern = "\(<image>./</image>\)"
+        audio_tag = "(<audio>./</audio>)"
+        audio_pattern = "\(<audio>./</audio>\)"
+        split_pattern = f"({image_pattern}|{audio_pattern})"
+
+        if isinstance(texts, str):
+            texts = [texts]
+
+        bs = len(texts)
+        if images is not None:
+            images, image_sizes, tgt_sizes = images["pixel_values"], images["image_sizes"], images["tgt_sizes"]
+        else:
+            images, image_sizes, tgt_sizes = [[]] * bs, [[]] * bs, [[]] * bs
+
+        input_ids_list = []
+        image_bounds_list = []
+        audio_bounds_list = []
+        spk_bounds_list = []
+
+        for index, text in enumerate(texts):
+            text_chunks = re.split(split_pattern, text)
+
+            image_tags = re.findall(image_pattern, text)
+            audio_tags = re.findall(audio_pattern, text)
+
+            if image_tags:
+                assert images is not None
+                assert len(image_tags) == len(image_sizes[index])
+            if audio_tags:
+                assert audio_phs is not None
+                assert len(audio_tags) == len(audio_phs[index])
+
+            image_id = 0
+            audio_id = 0
+            for i, chunk in enumerate(text_chunks):
+                if chunk == image_tag:
+                    image_placeholder = self.image_processor.get_slice_image_placeholder(
+                        image_sizes[index][image_id], image_id, max_slice_nums, use_image_id
+                    )
+                    image_id += 1
+                    text_chunks[i] = image_placeholder
+                elif chunk == audio_tag:
+                    audio_placeholder = audio_phs[index][audio_id]
+                    audio_id += 1
+                    text_chunks[i] = audio_placeholder
+
+            final_text = "".join(text_chunks)
+            input_ids, image_bounds, audio_bounds, spk_bounds = self._convert(final_text, max_length, **kwargs)
+
+            input_ids_list.append(input_ids)
+            image_bounds_list.append(image_bounds)
+            audio_bounds_list.append(audio_bounds)
+            spk_bounds_list.append(spk_bounds)
+
+        padded_input_ids, padding_lengths = self.pad(input_ids_list, padding_side="left")
+        attention_mask = torch.ones_like(padded_input_ids, dtype=torch.bool)
+        for i, length in enumerate(padding_lengths):
+            image_bounds_list[i] = image_bounds_list[i] + length
+            audio_bounds_list[i] = audio_bounds_list[i] + length
+            spk_bounds_list[i] = spk_bounds_list[i] + length
+            attention_mask[i, :length] = False
+
+        data = {
+            "input_ids": padded_input_ids,
+            "attention_mask": attention_mask,
+            "pixel_values": images,
+            "image_sizes": image_sizes,
+            "image_bound": image_bounds_list,
+            "tgt_sizes": tgt_sizes,
+            "audio_bounds": audio_bounds_list,
+            "spk_bounds": spk_bounds_list,
+        }
+
+        return data
+
+    @property
+    # Copied from transformers.models.clip.processing_clip.CLIPProcessor.model_input_names
+    def model_input_names(self):
+        tokenizer_input_names = self.tokenizer.model_input_names
+        image_processor_input_names = self.image_processor.model_input_names
+        feature_extractor_input_names = self.feature_extractor.model_input_names
+        return list(dict.fromkeys(tokenizer_input_names + image_processor_input_names + feature_extractor_input_names))
+
+    def pad(self, inputs, max_length=None, padding_value=0, padding_side="left"):
+        items = []
+        if isinstance(inputs[0], list):
+            assert isinstance(inputs[0][0], torch.Tensor)
+            for it in inputs:
+                for tr in it:
+                    items.append(tr)
+        else:
+            assert isinstance(inputs[0], torch.Tensor)
+            items = inputs
+
+        batch_size = len(items)
+        shape = items[0].shape
+        dim = len(shape)
+        assert dim <= 2
+        if max_length is None:
+            max_length = 0
+        max_length = max(max_length, max(item.shape[-1] for item in items))
+        min_length = min(item.shape[-1] for item in items)
+        dtype = items[0].dtype
+
+        if dim == 0:
+            return torch.stack([item for item in items], dim=0), [0]
+        elif dim == 1:
+            if max_length == min_length:
+                return torch.stack([item for item in items], dim=0), [0] * batch_size
+            tensor = torch.zeros((batch_size, max_length), dtype=dtype) + padding_value
+        else:
+            tensor = torch.zeros((batch_size, max_length, shape[-1]), dtype=dtype) + padding_value
+
+        padding_length = []
+        for i, item in enumerate(items):
+            if dim == 1:
+                if padding_side == "left":
+                    tensor[i, -len(item) :] = item.clone()
+                else:
+                    tensor[i, : len(item)] = item.clone()
+            elif dim == 2:
+                if padding_side == "left":
+                    tensor[i, -len(item) :, :] = item.clone()
+                else:
+                    tensor[i, : len(item), :] = item.clone()
+            padding_length.append(tensor.shape[-1] - len(item))
+
+        return tensor, padding_length
+
+
+class MelSpectrogramFeatures(torch.nn.Module):
+    def __init__(
+        self,
+        sample_rate=24000,
+        n_fft=1024,
+        hop_length=256,
+        n_mels=100,
+        padding: Literal["center", "same"] = "center",
+    ):
+        super().__init__()
+        if padding not in ["center", "same"]:
+            raise ValueError("Padding must be 'center' or 'same'.")
+        self.padding = padding
+        self.mel_spec = torchaudio.transforms.MelSpectrogram(
+            sample_rate=sample_rate,
+            n_fft=n_fft,
+            hop_length=hop_length,
+            n_mels=n_mels,
+            center=padding == "center",
+            power=1,
+        )
+
+    def __call__(self, audio: torch.Tensor) -> torch.Tensor:
+        """
+        audio: Tensor([num_channels, num_samples])
+        """
+        return super().__call__(audio)
+
+    def forward(self, audio: torch.Tensor) -> torch.Tensor:
+        """
+        audio: Tensor([num_channels, num_samples])
+        """
+        mel: torch.Tensor = self.mel_spec(audio)
+        features = torch.log(torch.clip(mel, min=1e-5))
+        return features
+
+
+class ChatTTSProcessor:
+    def __init__(self, text_tokenizer):
+        self.audio_processor = MelSpectrogramFeatures()
+        self.text_tokenizer = text_tokenizer
+
+    def __call__(self, text_list, audio_list):
+        assert len(text_list) == len(audio_list)
+        input_ids_varlen = []
+        for text in text_list:
+            input_ids_ = self.text_tokenizer.encode(text, return_tensors="pt", add_special_tokens=False)  # [1, seq_len]
+            input_ids_ = input_ids_.squeeze(0)  # [seq_len]
+            input_ids_varlen.append(input_ids_)
+
+        audio_features_varlen = []
+        for audio in audio_list:
+            assert audio.shape.__len__() == 1  # [seq_len]
+            try:
+                mel = self.audio_processor(audio)  # [100(num_mel_bins), seq_len_mel]
+            except Exception as e:
+                raise e
+            audio_features_varlen.append(mel)
+
+        return {
+            "tts_input_ids_varlen": input_ids_varlen,  # return List[Tensor]
+            "tts_input_features_varlen": audio_features_varlen,  # return List[Tensor]
+        }