import logging
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from typing import Union, Dict, List, Tuple, Optional
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import time
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import torch
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import torch.nn as nn
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import torch.nn.functional as F
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from torch.cuda.amp import autocast
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from funasr.models.scama.utils import sequence_mask
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from funasr.losses.label_smoothing_loss import LabelSmoothingLoss
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from funasr.models.ctc.ctc import CTC
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from funasr.models.transformer.utils.add_sos_eos import add_sos_eos
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from funasr.metrics.compute_acc import th_accuracy, compute_accuracy
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# from funasr.models.e2e_asr_common import ErrorCalculator
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from funasr.train_utils.device_funcs import force_gatherable
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from funasr.utils.load_utils import load_audio_text_image_video, extract_fbank
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from funasr.utils import postprocess_utils
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from funasr.utils.datadir_writer import DatadirWriter
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from funasr.register import tables
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@tables.register("model_classes", "LLMASRNAR")
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class LLMASRNAR(nn.Module):
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""" """
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def __init__(
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self,
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specaug: str = None,
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specaug_conf: dict = None,
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normalize: str = None,
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normalize_conf: dict = None,
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encoder: str = None,
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encoder_conf: dict = None,
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decoder: str = None,
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decoder_conf: dict = None,
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ctc: str = None,
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ctc_conf: dict = None,
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ctc_weight: float = 0.5,
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llm: str = None,
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llm_conf: dict = None,
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adaptor: str = None,
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adaptor_conf: dict = None,
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input_size: int = 80,
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vocab_size: int = -1,
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ignore_id: int = -1,
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blank_id: int = 0,
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sos: int = 1,
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eos: int = 2,
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lsm_weight: float = 0.0,
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length_normalized_loss: bool = False,
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report_cer: bool = True,
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report_wer: bool = True,
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sym_space: str = "<space>",
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sym_blank: str = "<blank>",
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# extract_feats_in_collect_stats: bool = True,
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share_embedding: bool = False,
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# preencoder: Optional[AbsPreEncoder] = None,
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# postencoder: Optional[AbsPostEncoder] = None,
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**kwargs,
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):
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super().__init__()
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if specaug is not None:
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specaug_class = tables.specaug_classes.get(specaug)
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specaug = specaug_class(**specaug_conf)
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if normalize is not None:
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normalize_class = tables.normalize_classes.get(normalize)
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normalize = normalize_class(**normalize_conf)
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# audio encoder
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hub = encoder_conf.get("hub", None)
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if hub == "funasr":
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from funasr import AutoModel
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init_param_path = encoder_conf.get("init_param_path", "iic/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch")
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model = AutoModel(model=init_param_path, model_revision="v2.0.4")
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# frontend = model.kwargs.get("frontend")
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model.model.decoder = None
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self.audio_encoder = model.model
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# self.frontend = frontend
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elif hub == "hf":
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pass
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else:
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encoder_class = tables.encoder_classes.get(encoder)
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encoder = encoder_class(input_size=input_size, **encoder_conf)
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encoder_output_size = encoder.output_size()
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# llm
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hub = llm_conf.get("hub", "hf")
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self.llm = None
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if hub == "hf":
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from transformers import AutoModelForCausalLM, AutoTokenizer, AutoConfig
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init_param_path = llm_conf.get("init_param_path", "vicuna-7b-v1.5")
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model = AutoModelForCausalLM.from_pretrained(
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init_param_path,
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load_in_8bit=None,
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device_map=None,
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use_cache=None,
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)
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freeze = llm_conf.get("freeze", True)
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if freeze:
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for name, param in model.named_parameters():
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param.requires_grad = False
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model.eval()
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self.llm = model
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# adaptor
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adaptor_class = tables.adaptor_classes.get(adaptor)
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adaptor = adaptor_class(**adaptor_conf)
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self.adaptor = adaptor
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self.blank_id = blank_id
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self.sos = sos if sos is not None else vocab_size - 1
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self.eos = eos if eos is not None else vocab_size - 1
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self.vocab_size = vocab_size
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self.ignore_id = ignore_id
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self.specaug = specaug
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self.normalize = normalize
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self.encoder = encoder
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self.criterion_att = LabelSmoothingLoss(
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size=vocab_size,
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padding_idx=ignore_id,
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smoothing=lsm_weight,
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normalize_length=length_normalized_loss,
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)
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#
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# if report_cer or report_wer:
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# self.error_calculator = ErrorCalculator(
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# token_list, sym_space, sym_blank, report_cer, report_wer
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# )
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#
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self.error_calculator = None
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self.length_normalized_loss = length_normalized_loss
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self.beam_search = None
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def forward(
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self,
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speech: torch.Tensor,
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speech_lengths: torch.Tensor,
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text: torch.Tensor,
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text_lengths: torch.Tensor,
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input_ids: torch.Tensor,
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attention_mask:torch.Tensor,
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labels_ids: torch.Tensor,
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label_mask: torch.Tensor,
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audio_mask: torch.Tensor,
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**kwargs,
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) -> Tuple[torch.Tensor, Dict[str, torch.Tensor], torch.Tensor]:
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"""Encoder + Decoder + Calc loss
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Args:
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speech: (Batch, Length, ...)
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speech_lengths: (Batch, )
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text: (Batch, Length)
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text_lengths: (Batch,)
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"""
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# import pdb;
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# pdb.set_trace()
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if len(text_lengths.size()) > 1:
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text_lengths = text_lengths[:, 0]
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if len(speech_lengths.size()) > 1:
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speech_lengths = speech_lengths[:, 0]
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batch_size = speech.shape[0]
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# audio encoder
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encoder_out, encoder_out_lens = self.encode(speech, speech_lengths, audio_mask=audio_mask)
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# adaptor
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encoder_out = self.adaptor(encoder_out)
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if input_ids is not None:
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input_ids[input_ids == -1] = 0
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input_ids[input_ids == -100] = 0
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if hasattr(self.llm.model, "embed_tokens"):
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inputs_embeds = self.llm.model.embed_tokens(input_ids)
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elif hasattr(self.llm.model.model, "embed_tokens"):
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inputs_embeds = self.llm.model.model.embed_tokens(input_ids)
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else:
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inputs_embeds = self.llm.model.model.model.embed_tokens(input_ids)
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if audio_mask is not None:
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batch_size, token_num, dims = inputs_embeds.shape
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_, l, _ = encoder_out.shape
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encoder_outs_pad = F.pad(encoder_out, (0, 0, token_num-l-1, 1, 0, 0), value=0.0)
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inputs_embeds = encoder_outs_pad * audio_mask[:, :, None] + inputs_embeds * (1.0-audio_mask[:, :, None])
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inputs_embeds = F.pad(inputs_embeds[:, 1:, :], (0, 0, 0, 1, 0, 0), value=0.0)
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model_outputs = self.llm(inputs_embeds=inputs_embeds, attention_mask=attention_mask, labels=labels_ids)
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loss = model_outputs.loss
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stats = {}
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with torch.no_grad():
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preds = torch.argmax(model_outputs.logits, -1)
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acc_att = compute_accuracy(preds[:, :-1], labels_ids[:, 1:], ignore_label=-100)
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stats["acc"] = acc_att
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stats["loss"] = torch.clone(loss.detach())
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# force_gatherable: to-device and to-tensor if scalar for DataParallel
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if self.length_normalized_loss:
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batch_size = int((text_lengths + 1).sum())
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loss, stats, weight = force_gatherable((loss, stats, batch_size), loss.device)
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return loss, stats, weight
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def encode(
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self, speech: torch.Tensor, speech_lengths: torch.Tensor, **kwargs,
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) -> Tuple[torch.Tensor, torch.Tensor]:
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audio_mask = kwargs.get("audio_mask", None)
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audio_token_lengths = audio_mask.sum(-1) if audio_mask is not None else None
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batch = {"speech": speech, "speech_lengths": speech_lengths}
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enc, enc_lens = self.audio_encoder.encode(**batch)
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with autocast(False):
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enc_mask = sequence_mask(enc_lens, enc.size(1), device=enc.device)[:, None, :]
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pre_acoustic_embeds, pre_token_length, _, _ = self.audio_encoder.predictor(enc,
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mask=enc_mask,
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target_label_length=audio_token_lengths,
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)
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return pre_acoustic_embeds, pre_token_length
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def inference(self,
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data_in,
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data_lengths=None,
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key: list = None,
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tokenizer=None,
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frontend=None,
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**kwargs,
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):
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prompt = kwargs.get("prompt", "Transcribe speech to text.")
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if kwargs.get("batch_size", 1) > 1:
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raise NotImplementedError("batch decoding is not implemented")
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meta_data = {}
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if isinstance(data_in, torch.Tensor) and kwargs.get("data_type", "sound") == "fbank": # fbank
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speech, speech_lengths = data_in, data_lengths
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if len(speech.shape) < 3:
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speech = speech[None, :, :]
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if speech_lengths is None:
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speech_lengths = speech.shape[1]
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else:
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# extract fbank feats
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time1 = time.perf_counter()
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audio_sample_list = load_audio_text_image_video(data_in, fs=frontend.fs, audio_fs=kwargs.get("fs", 16000),
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data_type=kwargs.get("data_type", "sound"),
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tokenizer=tokenizer)
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time2 = time.perf_counter()
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meta_data["load_data"] = f"{time2 - time1:0.3f}"
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speech, speech_lengths = extract_fbank(audio_sample_list, data_type=kwargs.get("data_type", "sound"),
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frontend=frontend)
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time3 = time.perf_counter()
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meta_data["extract_feat"] = f"{time3 - time2:0.3f}"
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meta_data["batch_data_time"] = speech_lengths.sum().item() * frontend.frame_shift * frontend.lfr_n / 1000
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speech = speech.to(device=kwargs["device"])
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speech_lengths = speech_lengths.to(device=kwargs["device"])
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# Encoder
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encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
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# adaptor
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encoder_out = self.adaptor(encoder_out)
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prompt_pre = "USER: \nINSTRUCTION: {}\nINPUT: ".format(prompt)
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prompt_ids = tokenizer.encode(prompt_pre)
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prompt_length = len(prompt_ids)
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prompt_ids = torch.tensor(prompt_ids, dtype=torch.int64).to(kwargs["device"])
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if hasattr(self.llm.model, "embed_tokens"):
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inputs_embeds = self.llm.model.embed_tokens(prompt_ids)
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elif hasattr(self.llm.model.model, "embed_tokens"):
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inputs_embeds = self.llm.model.model.embed_tokens(prompt_ids)
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else:
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inputs_embeds = self.llm.model.model.model.embed_tokens(prompt_ids)
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inputs_embeds = torch.cat((inputs_embeds[None, :, :], encoder_out), dim=1) # [prompt, audio]
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attention_mask = torch.ones(inputs_embeds.size()[:-1], dtype=torch.long).to(kwargs["device"])
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# model_outputs = self.llm.generate(
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# inputs_embeds=inputs_embeds,
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# max_length=kwargs.get("max_length", 200),
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# max_new_tokens=kwargs.get("max_new_tokens", 200),
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# num_beams=kwargs.get("num_beams", 4),
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# do_sample=kwargs.get("do_sample", False),
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# min_length=kwargs.get("min_length", 1),
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# top_p=kwargs.get("top_p", 1.0),
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# repetition_penalty=kwargs.get("repetition_penalty", 1.0),
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# length_penalty=kwargs.get("length_penalty", 1.0),
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# temperature=kwargs.get("temperature", 1.0),
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# attention_mask=attention_mask,
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# bos_token_id=tokenizer.bos_token_id,
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# eos_token_id=tokenizer.eos_token_id,
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# pad_token_id=tokenizer.pad_token_id
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# )
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model_outputs = self.llm(inputs_embeds=inputs_embeds, attention_mask=attention_mask, labels=None)
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preds = torch.argmax(model_outputs.logits, -1)
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text = tokenizer.batch_decode(preds, add_special_tokens=False, skip_special_tokens=True)
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text = text.split(': "\n')[-1]
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# preds = torch.argmax(model_outputs.logits, -1)
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ibest_writer = None
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if kwargs.get("output_dir") is not None:
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if not hasattr(self, "writer"):
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self.writer = DatadirWriter(kwargs.get("output_dir"))
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ibest_writer = self.writer[f"{0 + 1}best_recog"]
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results = []
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result_i = {"key": key[0], "text": text}
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results.append(result_i)
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if ibest_writer is not None:
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ibest_writer["text"][key[0]] = text
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return results, meta_data
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