From 28a19dbc4e85d3b8a4ec2ef7483bba64d422b43f Mon Sep 17 00:00:00 2001
From: aky15 <ankeyu.aky@11.17.44.249>
Date: 星期三, 12 四月 2023 18:03:06 +0800
Subject: [PATCH] Merge remote-tracking branch 'origin/main' into dev_aky

---
 funasr/bin/asr_inference_paraformer.py |  518 +++++++++++++++++++++++++++++++++++++--------------------
 1 files changed, 336 insertions(+), 182 deletions(-)

diff --git a/funasr/bin/asr_inference_paraformer.py b/funasr/bin/asr_inference_paraformer.py
index 1a73457..8cbd419 100644
--- a/funasr/bin/asr_inference_paraformer.py
+++ b/funasr/bin/asr_inference_paraformer.py
@@ -3,6 +3,11 @@
 import logging
 import sys
 import time
+import copy
+import os
+import codecs
+import tempfile
+import requests
 from pathlib import Path
 from typing import Optional
 from typing import Sequence
@@ -35,15 +40,10 @@
 from funasr.utils.types import str_or_none
 from funasr.utils import asr_utils, wav_utils, postprocess_utils
 from funasr.models.frontend.wav_frontend import WavFrontend
-
-header_colors = '\033[95m'
-end_colors = '\033[0m'
-
-global_asr_language: str = 'zh-cn'
-global_sample_rate: Union[int, Dict[Any, int]] = {
-    'audio_fs': 16000,
-    'model_fs': 16000
-}
+from funasr.models.e2e_asr_paraformer import BiCifParaformer, ContextualParaformer
+from funasr.export.models.e2e_asr_paraformer import Paraformer as Paraformer_export
+from funasr.utils.timestamp_tools import ts_prediction_lfr6_standard
+from funasr.bin.tp_inference import SpeechText2Timestamp
 
 
 class Speech2Text:
@@ -51,7 +51,7 @@
 
     Examples:
             >>> import soundfile
-            >>> speech2text = Speech2Text("asr_config.yml", "asr.pth")
+            >>> speech2text = Speech2Text("asr_config.yml", "asr.pb")
             >>> audio, rate = soundfile.read("speech.wav")
             >>> speech2text(audio)
             [(text, token, token_int, hypothesis object), ...]
@@ -78,6 +78,7 @@
             penalty: float = 0.0,
             nbest: int = 1,
             frontend_conf: dict = None,
+            hotword_list_or_file: str = None,
             **kwargs,
     ):
         assert check_argument_types()
@@ -95,10 +96,13 @@
         logging.info("asr_train_args: {}".format(asr_train_args))
         asr_model.to(dtype=getattr(torch, dtype)).eval()
 
-        ctc = CTCPrefixScorer(ctc=asr_model.ctc, eos=asr_model.eos)
+        if asr_model.ctc != None:
+            ctc = CTCPrefixScorer(ctc=asr_model.ctc, eos=asr_model.eos)
+            scorers.update(
+                ctc=ctc
+            )
         token_list = asr_model.token_list
         scorers.update(
-            ctc=ctc,
             length_bonus=LengthBonus(len(token_list)),
         )
 
@@ -165,8 +169,13 @@
         self.asr_train_args = asr_train_args
         self.converter = converter
         self.tokenizer = tokenizer
+
+        # 6. [Optional] Build hotword list from str, local file or url
+        self.hotword_list = None
+        self.hotword_list = self.generate_hotwords_list(hotword_list_or_file)
+
         is_use_lm = lm_weight != 0.0 and lm_file is not None
-        if ctc_weight == 0.0 and not is_use_lm:
+        if (ctc_weight == 0.0 or asr_model.ctc == None) and not is_use_lm:
             beam_search = None
         self.beam_search = beam_search
         logging.info(f"Beam_search: {self.beam_search}")
@@ -178,12 +187,13 @@
         self.nbest = nbest
         self.frontend = frontend
         self.encoder_downsampling_factor = 1
-        if asr_train_args.encoder_conf["input_layer"] == "conv2d":
+        if asr_train_args.encoder == "data2vec_encoder" or asr_train_args.encoder_conf["input_layer"] == "conv2d":
             self.encoder_downsampling_factor = 4
 
     @torch.no_grad()
     def __call__(
-            self, speech: Union[torch.Tensor, np.ndarray], speech_lengths: Union[torch.Tensor, np.ndarray] = None
+            self, speech: Union[torch.Tensor, np.ndarray], speech_lengths: Union[torch.Tensor, np.ndarray] = None,
+            begin_time: int = 0, end_time: int = None,
     ):
         """Inference
 
@@ -224,8 +234,20 @@
         pre_acoustic_embeds, pre_token_length, alphas, pre_peak_index = predictor_outs[0], predictor_outs[1], \
                                                                         predictor_outs[2], predictor_outs[3]
         pre_token_length = pre_token_length.round().long()
-        decoder_outs = self.asr_model.cal_decoder_with_predictor(enc, enc_len, pre_acoustic_embeds, pre_token_length)
-        decoder_out, ys_pad_lens = decoder_outs[0], decoder_outs[1]
+        if torch.max(pre_token_length) < 1:
+            return []
+        if not isinstance(self.asr_model, ContextualParaformer):
+            if self.hotword_list:
+                logging.warning("Hotword is given but asr model is not a ContextualParaformer.")
+            decoder_outs = self.asr_model.cal_decoder_with_predictor(enc, enc_len, pre_acoustic_embeds, pre_token_length)
+            decoder_out, ys_pad_lens = decoder_outs[0], decoder_outs[1]
+        else:
+            decoder_outs = self.asr_model.cal_decoder_with_predictor(enc, enc_len, pre_acoustic_embeds, pre_token_length, hw_list=self.hotword_list)
+            decoder_out, ys_pad_lens = decoder_outs[0], decoder_outs[1]
+
+        if isinstance(self.asr_model, BiCifParaformer):
+            _, _, us_alphas, us_peaks = self.asr_model.calc_predictor_timestamp(enc, enc_len,
+                                                                                   pre_token_length)  # test no bias cif2
 
         results = []
         b, n, d = decoder_out.size()
@@ -259,7 +281,223 @@
                     token_int = hyp.yseq[1:last_pos].tolist()
 
                 # remove blank symbol id, which is assumed to be 0
-                token_int = list(filter(lambda x: x != 0, token_int))
+                token_int = list(filter(lambda x: x != 0 and x != 2, token_int))
+
+                # Change integer-ids to tokens
+                token = self.converter.ids2tokens(token_int)
+
+                if self.tokenizer is not None:
+                    text = self.tokenizer.tokens2text(token)
+                else:
+                    text = None
+
+                if isinstance(self.asr_model, BiCifParaformer):
+                    _, timestamp = ts_prediction_lfr6_standard(us_alphas[i], 
+                                                            us_peaks[i], 
+                                                            copy.copy(token), 
+                                                            vad_offset=begin_time)
+                    results.append((text, token, token_int, hyp, timestamp, enc_len_batch_total, lfr_factor))
+                else:
+                    results.append((text, token, token_int, hyp, enc_len_batch_total, lfr_factor))
+
+        # assert check_return_type(results)
+        return results
+
+    def generate_hotwords_list(self, hotword_list_or_file):
+        # for None
+        if hotword_list_or_file is None:
+            hotword_list = None
+        # for local txt inputs
+        elif os.path.exists(hotword_list_or_file) and hotword_list_or_file.endswith('.txt'):
+            logging.info("Attempting to parse hotwords from local txt...")
+            hotword_list = []
+            hotword_str_list = []
+            with codecs.open(hotword_list_or_file, 'r') as fin:
+                for line in fin.readlines():
+                    hw = line.strip()
+                    hotword_str_list.append(hw)
+                    hotword_list.append(self.converter.tokens2ids([i for i in hw]))
+                hotword_list.append([self.asr_model.sos])
+                hotword_str_list.append('<s>')
+            logging.info("Initialized hotword list from file: {}, hotword list: {}."
+                         .format(hotword_list_or_file, hotword_str_list))
+        # for url, download and generate txt
+        elif hotword_list_or_file.startswith('http'):
+            logging.info("Attempting to parse hotwords from url...")
+            work_dir = tempfile.TemporaryDirectory().name
+            if not os.path.exists(work_dir):
+                os.makedirs(work_dir)
+            text_file_path = os.path.join(work_dir, os.path.basename(hotword_list_or_file))
+            local_file = requests.get(hotword_list_or_file)
+            open(text_file_path, "wb").write(local_file.content)
+            hotword_list_or_file = text_file_path
+            hotword_list = []
+            hotword_str_list = []
+            with codecs.open(hotword_list_or_file, 'r') as fin:
+                for line in fin.readlines():
+                    hw = line.strip()
+                    hotword_str_list.append(hw)
+                    hotword_list.append(self.converter.tokens2ids([i for i in hw]))
+                hotword_list.append([self.asr_model.sos])
+                hotword_str_list.append('<s>')
+            logging.info("Initialized hotword list from file: {}, hotword list: {}."
+                         .format(hotword_list_or_file, hotword_str_list))
+        # for text str input
+        elif not hotword_list_or_file.endswith('.txt'):
+            logging.info("Attempting to parse hotwords as str...")
+            hotword_list = []
+            hotword_str_list = []
+            for hw in hotword_list_or_file.strip().split():
+                hotword_str_list.append(hw)
+                hotword_list.append(self.converter.tokens2ids([i for i in hw]))
+            hotword_list.append([self.asr_model.sos])
+            hotword_str_list.append('<s>')
+            logging.info("Hotword list: {}.".format(hotword_str_list))
+        else:
+            hotword_list = None
+        return hotword_list
+
+class Speech2TextExport:
+    """Speech2TextExport class
+
+    """
+
+    def __init__(
+            self,
+            asr_train_config: Union[Path, str] = None,
+            asr_model_file: Union[Path, str] = None,
+            cmvn_file: Union[Path, str] = None,
+            lm_train_config: Union[Path, str] = None,
+            lm_file: Union[Path, str] = None,
+            token_type: str = None,
+            bpemodel: str = None,
+            device: str = "cpu",
+            maxlenratio: float = 0.0,
+            minlenratio: float = 0.0,
+            dtype: str = "float32",
+            beam_size: int = 20,
+            ctc_weight: float = 0.5,
+            lm_weight: float = 1.0,
+            ngram_weight: float = 0.9,
+            penalty: float = 0.0,
+            nbest: int = 1,
+            frontend_conf: dict = None,
+            hotword_list_or_file: str = None,
+            **kwargs,
+    ):
+
+        # 1. Build ASR model
+        asr_model, asr_train_args = ASRTask.build_model_from_file(
+            asr_train_config, asr_model_file, cmvn_file, device
+        )
+        frontend = None
+        if asr_train_args.frontend is not None and asr_train_args.frontend_conf is not None:
+            frontend = WavFrontend(cmvn_file=cmvn_file, **asr_train_args.frontend_conf)
+
+        logging.info("asr_model: {}".format(asr_model))
+        logging.info("asr_train_args: {}".format(asr_train_args))
+        asr_model.to(dtype=getattr(torch, dtype)).eval()
+
+        token_list = asr_model.token_list
+
+
+
+        logging.info(f"Decoding device={device}, dtype={dtype}")
+
+        # 5. [Optional] Build Text converter: e.g. bpe-sym -> Text
+        if token_type is None:
+            token_type = asr_train_args.token_type
+        if bpemodel is None:
+            bpemodel = asr_train_args.bpemodel
+
+        if token_type is None:
+            tokenizer = None
+        elif token_type == "bpe":
+            if bpemodel is not None:
+                tokenizer = build_tokenizer(token_type=token_type, bpemodel=bpemodel)
+            else:
+                tokenizer = None
+        else:
+            tokenizer = build_tokenizer(token_type=token_type)
+        converter = TokenIDConverter(token_list=token_list)
+        logging.info(f"Text tokenizer: {tokenizer}")
+
+        # self.asr_model = asr_model
+        self.asr_train_args = asr_train_args
+        self.converter = converter
+        self.tokenizer = tokenizer
+
+        self.device = device
+        self.dtype = dtype
+        self.nbest = nbest
+        self.frontend = frontend
+
+        model = Paraformer_export(asr_model, onnx=False)
+        self.asr_model = model
+        
+    @torch.no_grad()
+    def __call__(
+            self, speech: Union[torch.Tensor, np.ndarray], speech_lengths: Union[torch.Tensor, np.ndarray] = None
+    ):
+        """Inference
+
+        Args:
+                speech: Input speech data
+        Returns:
+                text, token, token_int, hyp
+
+        """
+        assert check_argument_types()
+
+        # Input as audio signal
+        if isinstance(speech, np.ndarray):
+            speech = torch.tensor(speech)
+
+        if self.frontend is not None:
+            feats, feats_len = self.frontend.forward(speech, speech_lengths)
+            feats = to_device(feats, device=self.device)
+            feats_len = feats_len.int()
+            self.asr_model.frontend = None
+        else:
+            feats = speech
+            feats_len = speech_lengths
+
+        enc_len_batch_total = feats_len.sum()
+        lfr_factor = max(1, (feats.size()[-1] // 80) - 1)
+        batch = {"speech": feats, "speech_lengths": feats_len}
+
+        # a. To device
+        batch = to_device(batch, device=self.device)
+
+        decoder_outs = self.asr_model(**batch)
+        decoder_out, ys_pad_lens = decoder_outs[0], decoder_outs[1]
+        
+        results = []
+        b, n, d = decoder_out.size()
+        for i in range(b):
+            am_scores = decoder_out[i, :ys_pad_lens[i], :]
+
+            yseq = am_scores.argmax(dim=-1)
+            score = am_scores.max(dim=-1)[0]
+            score = torch.sum(score, dim=-1)
+            # pad with mask tokens to ensure compatibility with sos/eos tokens
+            yseq = torch.tensor(
+                yseq.tolist(), device=yseq.device
+            )
+            nbest_hyps = [Hypothesis(yseq=yseq, score=score)]
+
+            for hyp in nbest_hyps:
+                assert isinstance(hyp, (Hypothesis)), type(hyp)
+
+                # remove sos/eos and get results
+                last_pos = -1
+                if isinstance(hyp.yseq, list):
+                    token_int = hyp.yseq[1:last_pos]
+                else:
+                    token_int = hyp.yseq[1:last_pos].tolist()
+
+                # remove blank symbol id, which is assumed to be 0
+                token_int = list(filter(lambda x: x != 0 and x != 2, token_int))
 
                 # Change integer-ids to tokens
                 token = self.converter.ids2tokens(token_int)
@@ -271,165 +509,8 @@
 
                 results.append((text, token, token_int, hyp, enc_len_batch_total, lfr_factor))
 
-        # assert check_return_type(results)
         return results
 
-
-# def inference(
-#         maxlenratio: float,
-#         minlenratio: float,
-#         batch_size: int,
-#         beam_size: int,
-#         ngpu: int,
-#         ctc_weight: float,
-#         lm_weight: float,
-#         penalty: float,
-#         log_level: Union[int, str],
-#         data_path_and_name_and_type,
-#         asr_train_config: Optional[str],
-#         asr_model_file: Optional[str],
-#         cmvn_file: Optional[str] = None,
-#         raw_inputs: Union[np.ndarray, torch.Tensor] = None,
-#         lm_train_config: Optional[str] = None,
-#         lm_file: Optional[str] = None,
-#         token_type: Optional[str] = None,
-#         key_file: Optional[str] = None,
-#         word_lm_train_config: Optional[str] = None,
-#         bpemodel: Optional[str] = None,
-#         allow_variable_data_keys: bool = False,
-#         streaming: bool = False,
-#         output_dir: Optional[str] = None,
-#         dtype: str = "float32",
-#         seed: int = 0,
-#         ngram_weight: float = 0.9,
-#         nbest: int = 1,
-#         num_workers: int = 1,
-#         frontend_conf: dict = None,
-#         fs: Union[dict, int] = 16000,
-#         lang: Optional[str] = None,
-#         **kwargs,
-# ):
-#     assert check_argument_types()
-#
-#     if word_lm_train_config is not None:
-#         raise NotImplementedError("Word LM is not implemented")
-#     if ngpu > 1:
-#         raise NotImplementedError("only single GPU decoding is supported")
-#
-#     logging.basicConfig(
-#         level=log_level,
-#         format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s",
-#     )
-#
-#     if ngpu >= 1 and torch.cuda.is_available():
-#         device = "cuda"
-#     else:
-#         device = "cpu"
-#
-#     # 1. Set random-seed
-#     set_all_random_seed(seed)
-#
-#     # 2. Build speech2text
-#     speech2text_kwargs = dict(
-#         asr_train_config=asr_train_config,
-#         asr_model_file=asr_model_file,
-#         cmvn_file=cmvn_file,
-#         lm_train_config=lm_train_config,
-#         lm_file=lm_file,
-#         token_type=token_type,
-#         bpemodel=bpemodel,
-#         device=device,
-#         maxlenratio=maxlenratio,
-#         minlenratio=minlenratio,
-#         dtype=dtype,
-#         beam_size=beam_size,
-#         ctc_weight=ctc_weight,
-#         lm_weight=lm_weight,
-#         ngram_weight=ngram_weight,
-#         penalty=penalty,
-#         nbest=nbest,
-#         frontend_conf=frontend_conf,
-#     )
-#     speech2text = Speech2Text(**speech2text_kwargs)
-#
-#     # 3. Build data-iterator
-#     loader = ASRTask.build_streaming_iterator(
-#         data_path_and_name_and_type,
-#         dtype=dtype,
-#         batch_size=batch_size,
-#         key_file=key_file,
-#         num_workers=num_workers,
-#         preprocess_fn=ASRTask.build_preprocess_fn(speech2text.asr_train_args, False),
-#         collate_fn=ASRTask.build_collate_fn(speech2text.asr_train_args, False),
-#         allow_variable_data_keys=allow_variable_data_keys,
-#         inference=True,
-#     )
-#
-#     forward_time_total = 0.0
-#     length_total = 0.0
-#     finish_count = 0
-#     file_count = 1
-#     # 7 .Start for-loop
-#     # FIXME(kamo): The output format should be discussed about
-#     asr_result_list = []
-#     if output_dir is not None:
-#         writer = DatadirWriter(output_dir)
-#     else:
-#         writer = None
-#
-#     for keys, batch in loader:
-#         assert isinstance(batch, dict), type(batch)
-#         assert all(isinstance(s, str) for s in keys), keys
-#         _bs = len(next(iter(batch.values())))
-#         assert len(keys) == _bs, f"{len(keys)} != {_bs}"
-#         # batch = {k: v for k, v in batch.items() if not k.endswith("_lengths")}
-#
-#         logging.info("decoding, utt_id: {}".format(keys))
-#         # N-best list of (text, token, token_int, hyp_object)
-#
-#         time_beg = time.time()
-#         results = speech2text(**batch)
-#         if len(results) < 1:
-#             hyp = Hypothesis(score=0.0, scores={}, states={}, yseq=[])
-#             results = [[" ", ["<space>"], [2], hyp, 10, 6]] * nbest
-#         time_end = time.time()
-#         forward_time = time_end - time_beg
-#         lfr_factor = results[0][-1]
-#         length = results[0][-2]
-#         forward_time_total += forward_time
-#         length_total += length
-#         logging.info(
-#             "decoding, feature length: {}, forward_time: {:.4f}, rtf: {:.4f}".
-#                 format(length, forward_time, 100 * forward_time / (length*lfr_factor)))
-#
-#         for batch_id in range(_bs):
-#             result = [results[batch_id][:-2]]
-#
-#             key = keys[batch_id]
-#             for n, (text, token, token_int, hyp) in zip(range(1, nbest + 1), result):
-#                 # Create a directory: outdir/{n}best_recog
-#                 if writer is not None:
-#                     ibest_writer = writer[f"{n}best_recog"]
-#
-#                     # Write the result to each file
-#                     ibest_writer["token"][key] = " ".join(token)
-#                     ibest_writer["token_int"][key] = " ".join(map(str, token_int))
-#                     ibest_writer["score"][key] = str(hyp.score)
-#
-#                 if text is not None:
-#                     text_postprocessed = postprocess_utils.sentence_postprocess(token)
-#                     item = {'key': key, 'value': text_postprocessed}
-#                     asr_result_list.append(item)
-#                     finish_count += 1
-#                     # asr_utils.print_progress(finish_count / file_count)
-#                     if writer is not None:
-#                         ibest_writer["text"][key] = text
-#
-#                 logging.info("decoding, utt: {}, predictions: {}".format(key, text))
-#
-#     logging.info("decoding, feature length total: {}, forward_time total: {:.4f}, rtf avg: {:.4f}".
-#                  format(length_total, forward_time_total, 100 * forward_time_total / (length_total*lfr_factor)))
-#     return asr_result_list
 
 def inference(
         maxlenratio: float,
@@ -460,7 +541,8 @@
         ngram_weight: float = 0.9,
         nbest: int = 1,
         num_workers: int = 1,
-
+        timestamp_infer_config: Union[Path, str] = None,
+        timestamp_model_file: Union[Path, str] = None,
         **kwargs,
 ):
     inference_pipeline = inference_modelscope(
@@ -524,6 +606,9 @@
         nbest: int = 1,
         num_workers: int = 1,
         output_dir: Optional[str] = None,
+        timestamp_infer_config: Union[Path, str] = None,
+        timestamp_model_file: Union[Path, str] = None,
+        param_dict: dict = None,
         **kwargs,
 ):
     assert check_argument_types()
@@ -537,6 +622,13 @@
         level=log_level,
         format="%(asctime)s (%(module)s:%(lineno)d) %(levelname)s: %(message)s",
     )
+    
+    export_mode = False
+    if param_dict is not None:
+        hotword_list_or_file = param_dict.get('hotword')
+        export_mode = param_dict.get("export_mode", False)
+    else:
+        hotword_list_or_file = None
 
     if ngpu >= 1 and torch.cuda.is_available():
         device = "cuda"
@@ -566,14 +658,39 @@
         ngram_weight=ngram_weight,
         penalty=penalty,
         nbest=nbest,
+        hotword_list_or_file=hotword_list_or_file,
     )
-    speech2text = Speech2Text(**speech2text_kwargs)
+    if export_mode:
+        speech2text = Speech2TextExport(**speech2text_kwargs)
+    else:
+        speech2text = Speech2Text(**speech2text_kwargs)
+
+    if timestamp_model_file is not None:
+        speechtext2timestamp = SpeechText2Timestamp(
+            timestamp_cmvn_file=cmvn_file,
+            timestamp_model_file=timestamp_model_file,
+            timestamp_infer_config=timestamp_infer_config,
+        )
+    else:
+        speechtext2timestamp = None
 
     def _forward(
             data_path_and_name_and_type,
             raw_inputs: Union[np.ndarray, torch.Tensor] = None,
             output_dir_v2: Optional[str] = None,
+            fs: dict = None,
+            param_dict: dict = None,
+            **kwargs,
     ):
+
+        hotword_list_or_file = None
+        if param_dict is not None:
+            hotword_list_or_file = param_dict.get('hotword')
+        if 'hotword' in kwargs:
+            hotword_list_or_file = kwargs['hotword']
+        if hotword_list_or_file is not None or 'hotword' in kwargs:
+            speech2text.hotword_list = speech2text.generate_hotwords_list(hotword_list_or_file)
+
         # 3. Build data-iterator
         if data_path_and_name_and_type is None and raw_inputs is not None:
             if isinstance(raw_inputs, torch.Tensor):
@@ -582,6 +699,7 @@
         loader = ASRTask.build_streaming_iterator(
             data_path_and_name_and_type,
             dtype=dtype,
+            fs=fs,
             batch_size=batch_size,
             key_file=key_file,
             num_workers=num_workers,
@@ -590,6 +708,11 @@
             allow_variable_data_keys=allow_variable_data_keys,
             inference=True,
         )
+
+        if param_dict is not None:
+            use_timestamp = param_dict.get('use_timestamp', True)
+        else:
+            use_timestamp = True
 
         forward_time_total = 0.0
         length_total = 0.0
@@ -618,7 +741,7 @@
             results = speech2text(**batch)
             if len(results) < 1:
                 hyp = Hypothesis(score=0.0, scores={}, states={}, yseq=[])
-                results = [[" ", ["<space>"], [2], hyp, 10, 6]] * nbest
+                results = [[" ", ["sil"], [2], hyp, 10, 6]] * nbest
             time_end = time.time()
             forward_time = time_end - time_beg
             lfr_factor = results[0][-1]
@@ -632,7 +755,19 @@
                 result = [results[batch_id][:-2]]
 
                 key = keys[batch_id]
-                for n, (text, token, token_int, hyp) in zip(range(1, nbest + 1), result):
+                for n, result in zip(range(1, nbest + 1), result):
+                    text, token, token_int, hyp = result[0], result[1], result[2], result[3]
+                    timestamp = None if len(result) < 5 else result[4]
+                    # conduct timestamp prediction here
+                    # timestamp inference requires token length
+                    # thus following inference cannot be conducted in batch
+                    if timestamp is None and speechtext2timestamp:
+                        ts_batch = {}
+                        ts_batch['speech'] = batch['speech'][batch_id].unsqueeze(0)
+                        ts_batch['speech_lengths'] = torch.tensor([batch['speech_lengths'][batch_id]])
+                        ts_batch['text_lengths'] = torch.tensor([len(token)])
+                        us_alphas, us_peaks = speechtext2timestamp(**ts_batch)
+                        ts_str, timestamp = ts_prediction_lfr6_standard(us_alphas[0], us_peaks[0], token, force_time_shift=-3.0)
                     # Create a directory: outdir/{n}best_recog
                     if writer is not None:
                         ibest_writer = writer[f"{n}best_recog"]
@@ -644,13 +779,25 @@
                         ibest_writer["rtf"][key] = rtf_cur
 
                     if text is not None:
-                        text_postprocessed = postprocess_utils.sentence_postprocess(token)
+                        if use_timestamp and timestamp is not None:
+                            postprocessed_result = postprocess_utils.sentence_postprocess(token, timestamp)
+                        else:
+                            postprocessed_result = postprocess_utils.sentence_postprocess(token)
+                        timestamp_postprocessed = ""
+                        if len(postprocessed_result) == 3:
+                            text_postprocessed, timestamp_postprocessed, word_lists = postprocessed_result[0], \
+                                                                                       postprocessed_result[1], \
+                                                                                       postprocessed_result[2]
+                        else:
+                            text_postprocessed, word_lists = postprocessed_result[0], postprocessed_result[1]
                         item = {'key': key, 'value': text_postprocessed}
+                        if timestamp_postprocessed != "":
+                            item['timestamp'] = timestamp_postprocessed
                         asr_result_list.append(item)
                         finish_count += 1
                         # asr_utils.print_progress(finish_count / file_count)
                         if writer is not None:
-                            ibest_writer["text"][key] = text
+                            ibest_writer["text"][key] = " ".join(word_lists)
 
                     logging.info("decoding, utt: {}, predictions: {}".format(key, text))
         rtf_avg = "decoding, feature length total: {}, forward_time total: {:.4f}, rtf avg: {:.4f}".format(length_total, forward_time_total, 100 * forward_time_total / (length_total * lfr_factor))
@@ -698,7 +845,12 @@
         default=1,
         help="The number of workers used for DataLoader",
     )
-
+    parser.add_argument(
+        "--hotword",
+        type=str_or_none,
+        default=None,
+        help="hotword file path or hotwords seperated by space"
+    )
     group = parser.add_argument_group("Input data related")
     group.add_argument(
         "--data_path_and_name_and_type",
@@ -826,8 +978,10 @@
     print(get_commandline_args(), file=sys.stderr)
     parser = get_parser()
     args = parser.parse_args(cmd)
+    param_dict = {'hotword': args.hotword}
     kwargs = vars(args)
     kwargs.pop("config", None)
+    kwargs['param_dict'] = param_dict
     inference(**kwargs)
 
 

--
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