add files

funasr_local/runtime/python/libtorch/README.md

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+# Libtorch-python
+
+## Export the model
+### Install [modelscope and funasr](https://github.com/alibaba-damo-academy/FunASR#installation)
+
+```shell
+# pip3 install torch torchaudio
+pip install -U modelscope funasr
+# For the users in China, you could install with the command:
+# pip install -U modelscope funasr -i https://mirror.sjtu.edu.cn/pypi/web/simple
+pip install torch-quant # Optional, for torchscript quantization
+pip install onnx onnxruntime # Optional, for onnx quantization
+```
+
+### Export [onnx model](https://github.com/alibaba-damo-academy/FunASR/tree/main/funasr/export)
+
+```shell
+python -m funasr.export.export_model --model-name damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch --export-dir ./export --type torch --quantize True
+```
+
+## Install the `funasr_torch`.
+    
+install from pip
+```shell
+pip install -U funasr_torch
+# For the users in China, you could install with the command:
+# pip install -U funasr_torch -i https://mirror.sjtu.edu.cn/pypi/web/simple
+```
+or install from source code
+
+```shell
+git clone https://github.com/alibaba/FunASR.git && cd FunASR
+cd funasr/runtime/python/libtorch
+pip install -e ./
+# For the users in China, you could install with the command:
+# pip install -e ./ -i https://mirror.sjtu.edu.cn/pypi/web/simple
+```
+
+## Run the demo.
+- Model_dir: the model path, which contains `model.torchscripts`, `config.yaml`, `am.mvn`.
+- Input: wav formt file, support formats: `str, np.ndarray, List[str]`
+- Output: `List[str]`: recognition result.
+- Example:
+     ```python
+     from funasr_torch import Paraformer
+
+     model_dir = "/nfs/zhifu.gzf/export/damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch"
+     model = Paraformer(model_dir, batch_size=1)
+
+     wav_path = ['/nfs/zhifu.gzf/export/damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch/example/asr_example.wav']
+
+     result = model(wav_path)
+     print(result)
+     ```
+
+## Performance benchmark
+
+Please ref to [benchmark](https://github.com/alibaba-damo-academy/FunASR/blob/main/funasr/runtime/python/benchmark_libtorch.md)
+
+## Speed
+
+Environment：Intel(R) Xeon(R) Platinum 8163 CPU @ 2.50GHz
+
+Test [wav, 5.53s, 100 times avg.](https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/test_audio/asr_example_zh.wav)
+
+| Backend  | RTF (FP32) |
+|:--------:|:----------:|
+| Pytorch  |   0.110    |
+| Libtorch |   0.048    |
+|   Onnx   |   0.038    |
+
+## Acknowledge
+This project is maintained by [FunASR community](https://github.com/alibaba-damo-academy/FunASR).

funasr_local/runtime/python/libtorch/demo.py

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+from funasr_local_torch import Paraformer
+
+
+model_dir = "/nfs/zhifu.gzf/export/damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch"
+
+model = Paraformer(model_dir, batch_size=1)  # cpu
+# model = Paraformer(model_dir, batch_size=1, device_id=0)  # gpu
+
+# when using paraformer-large-vad-punc model, you can set plot_timestamp_to="./xx.png" to get figure of alignment besides timestamps
+# model = Paraformer(model_dir, batch_size=1, plot_timestamp_to="test.png")
+
+wav_path = "YourPath/xx.wav"
+
+result = model(wav_path)
+print(result)

funasr_local/runtime/python/libtorch/funasr_torch/__init__.py

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+# -*- encoding: utf-8 -*-
+from .paraformer_bin import Paraformer

funasr_local/runtime/python/libtorch/funasr_torch/paraformer_bin.py

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+# -*- encoding: utf-8 -*-
+import os.path
+from pathlib import Path
+from typing import List, Union, Tuple
+
+import copy
+import librosa
+import numpy as np
+
+from .utils.utils import (CharTokenizer, Hypothesis,
+                          TokenIDConverter, get_logger,
+                          read_yaml)
+from .utils.postprocess_utils import sentence_postprocess
+from .utils.frontend import WavFrontend
+from .utils.timestamp_utils import time_stamp_lfr6_onnx
+logging = get_logger()
+
+import torch
+
+
+class Paraformer():
+    def __init__(self, model_dir: Union[str, Path] = None,
+                 batch_size: int = 1,
+                 device_id: Union[str, int] = "-1",
+                 plot_timestamp_to: str = "",
+                 quantize: bool = False,
+                 intra_op_num_threads: int = 1,
+                 ):
+
+        if not Path(model_dir).exists():
+            raise FileNotFoundError(f'{model_dir} does not exist.')
+
+        model_file = os.path.join(model_dir, 'model.torchscripts')
+        if quantize:
+            model_file = os.path.join(model_dir, 'model_quant.torchscripts')
+        config_file = os.path.join(model_dir, 'config.yaml')
+        cmvn_file = os.path.join(model_dir, 'am.mvn')
+        config = read_yaml(config_file)
+
+        self.converter = TokenIDConverter(config['token_list'])
+        self.tokenizer = CharTokenizer()
+        self.frontend = WavFrontend(
+            cmvn_file=cmvn_file,
+            **config['frontend_conf']
+        )
+        self.ort_infer = torch.jit.load(model_file)
+        self.batch_size = batch_size
+        self.device_id = device_id
+        self.plot_timestamp_to = plot_timestamp_to
+        if "predictor_bias" in config['model_conf'].keys():
+            self.pred_bias = config['model_conf']['predictor_bias']
+        else:
+            self.pred_bias = 0
+
+    def __call__(self, wav_content: Union[str, np.ndarray, List[str]], **kwargs) -> List:
+        waveform_list = self.load_data(wav_content, self.frontend.opts.frame_opts.samp_freq)
+        waveform_nums = len(waveform_list)
+        asr_res = []
+        for beg_idx in range(0, waveform_nums, self.batch_size):
+            
+            end_idx = min(waveform_nums, beg_idx + self.batch_size)
+            feats, feats_len = self.extract_feat(waveform_list[beg_idx:end_idx])
+            try:
+                with torch.no_grad():
+                    if int(self.device_id) == -1:
+                        outputs = self.ort_infer(feats, feats_len)
+                        am_scores, valid_token_lens = outputs[0], outputs[1]
+                    else:
+                        outputs = self.ort_infer(feats.cuda(), feats_len.cuda())
+                        am_scores, valid_token_lens = outputs[0].cpu(), outputs[1].cpu()
+                if len(outputs) == 4:
+                    # for BiCifParaformer Inference
+                    us_alphas, us_peaks = outputs[2], outputs[3]
+                else:
+                    us_alphas, us_peaks = None, None
+            except:
+                #logging.warning(traceback.format_exc())
+                logging.warning("input wav is silence or noise")
+                preds = ['']
+            else:
+                preds = self.decode(am_scores, valid_token_lens)
+                if us_peaks is None:
+                    for pred in preds:
+                        pred = sentence_postprocess(pred)
+                        asr_res.append({'preds': pred})
+                else:
+                    for pred, us_peaks_ in zip(preds, us_peaks):
+                        raw_tokens = pred
+                        timestamp, timestamp_raw = time_stamp_lfr6_onnx(us_peaks_, copy.copy(raw_tokens))
+                        text_proc, timestamp_proc, _ = sentence_postprocess(raw_tokens, timestamp_raw)
+                        # logging.warning(timestamp)
+                        if len(self.plot_timestamp_to):
+                            self.plot_wave_timestamp(waveform_list[0], timestamp, self.plot_timestamp_to)
+                        asr_res.append({'preds': text_proc, 'timestamp': timestamp_proc, "raw_tokens": raw_tokens})
+        return asr_res
+
+    def plot_wave_timestamp(self, wav, text_timestamp, dest):
+        # TODO: Plot the wav and timestamp results with matplotlib
+        import matplotlib
+        matplotlib.use('Agg')
+        matplotlib.rc("font", family='Alibaba PuHuiTi')  # set it to a font that your system supports
+        import matplotlib.pyplot as plt
+        fig, ax1 = plt.subplots(figsize=(11, 3.5), dpi=320)
+        ax2 = ax1.twinx()
+        ax2.set_ylim([0, 2.0])
+        # plot waveform
+        ax1.set_ylim([-0.3, 0.3])
+        time = np.arange(wav.shape[0]) / 16000
+        ax1.plot(time, wav/wav.max()*0.3, color='gray', alpha=0.4)
+        # plot lines and text
+        for (char, start, end) in text_timestamp:
+            ax1.vlines(start, -0.3, 0.3, ls='--')
+            ax1.vlines(end, -0.3, 0.3, ls='--')
+            x_adj = 0.045 if char != '<sil>' else 0.12
+            ax1.text((start + end) * 0.5 - x_adj, 0, char)
+        # plt.legend()
+        plotname = "{}/timestamp.png".format(dest)
+        plt.savefig(plotname, bbox_inches='tight')
+
+    def load_data(self,
+                  wav_content: Union[str, np.ndarray, List[str]], fs: int = None) -> List:
+        def load_wav(path: str) -> np.ndarray:
+            waveform, _ = librosa.load(path, sr=fs)
+            return waveform
+
+        if isinstance(wav_content, np.ndarray):
+            return [wav_content]
+
+        if isinstance(wav_content, str):
+            return [load_wav(wav_content)]
+
+        if isinstance(wav_content, list):
+            return [load_wav(path) for path in wav_content]
+
+        raise TypeError(
+            f'The type of {wav_content} is not in [str, np.ndarray, list]')
+
+    def extract_feat(self,
+                     waveform_list: List[np.ndarray]
+                     ) -> Tuple[np.ndarray, np.ndarray]:
+        feats, feats_len = [], []
+        for waveform in waveform_list:
+            speech, _ = self.frontend.fbank(waveform)
+            feat, feat_len = self.frontend.lfr_cmvn(speech)
+            feats.append(feat)
+            feats_len.append(feat_len)
+
+        feats = self.pad_feats(feats, np.max(feats_len))
+        feats_len = np.array(feats_len).astype(np.int32)
+        feats = torch.from_numpy(feats).type(torch.float32)
+        feats_len = torch.from_numpy(feats_len).type(torch.int32)
+        return feats, feats_len
+
+    @staticmethod
+    def pad_feats(feats: List[np.ndarray], max_feat_len: int) -> np.ndarray:
+        def pad_feat(feat: np.ndarray, cur_len: int) -> np.ndarray:
+            pad_width = ((0, max_feat_len - cur_len), (0, 0))
+            return np.pad(feat, pad_width, 'constant', constant_values=0)
+
+        feat_res = [pad_feat(feat, feat.shape[0]) for feat in feats]
+        feats = np.array(feat_res).astype(np.float32)
+        return feats
+
+    def infer(self, feats: np.ndarray,
+              feats_len: np.ndarray) -> Tuple[np.ndarray, np.ndarray]:
+        outputs = self.ort_infer([feats, feats_len])
+        return outputs
+
+    def decode(self, am_scores: np.ndarray, token_nums: int) -> List[str]:
+        return [self.decode_one(am_score, token_num)
+                for am_score, token_num in zip(am_scores, token_nums)]
+
+    def decode_one(self,
+                   am_score: np.ndarray,
+                   valid_token_num: int) -> List[str]:
+        yseq = am_score.argmax(axis=-1)
+        score = am_score.max(axis=-1)
+        score = np.sum(score, axis=-1)
+
+        # pad with mask tokens to ensure compatibility with sos/eos tokens
+        # asr_model.sos:1  asr_model.eos:2
+        yseq = np.array([1] + yseq.tolist() + [2])
+        hyp = Hypothesis(yseq=yseq, score=score)
+
+        # remove sos/eos and get results
+        last_pos = -1
+        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 not in (0, 2), token_int))
+
+        # Change integer-ids to tokens
+        token = self.converter.ids2tokens(token_int)
+        token = token[:valid_token_num-self.pred_bias]
+        # texts = sentence_postprocess(token)
+        return token
+

funasr_local/runtime/python/libtorch/funasr_torch/utils/compute_wer.py

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+import os
+import numpy as np
+import sys
+
+def compute_wer(ref_file,
+                hyp_file,
+                cer_detail_file):
+    rst = {
+        'Wrd': 0,
+        'Corr': 0,
+        'Ins': 0,
+        'Del': 0,
+        'Sub': 0,
+        'Snt': 0,
+        'Err': 0.0,
+        'S.Err': 0.0,
+        'wrong_words': 0,
+        'wrong_sentences': 0
+    }
+
+    hyp_dict = {}
+    ref_dict = {}
+    with open(hyp_file, 'r') as hyp_reader:
+        for line in hyp_reader:
+            key = line.strip().split()[0]
+            value = line.strip().split()[1:]
+            hyp_dict[key] = value
+    with open(ref_file, 'r') as ref_reader:
+        for line in ref_reader:
+            key = line.strip().split()[0]
+            value = line.strip().split()[1:]
+            ref_dict[key] = value
+
+    cer_detail_writer = open(cer_detail_file, 'w')
+    for hyp_key in hyp_dict:
+        if hyp_key in ref_dict:
+           out_item = compute_wer_by_line(hyp_dict[hyp_key], ref_dict[hyp_key])
+           rst['Wrd'] += out_item['nwords']
+           rst['Corr'] += out_item['cor']
+           rst['wrong_words'] += out_item['wrong']
+           rst['Ins'] += out_item['ins']
+           rst['Del'] += out_item['del']
+           rst['Sub'] += out_item['sub']
+           rst['Snt'] += 1
+           if out_item['wrong'] > 0:
+               rst['wrong_sentences'] += 1
+           cer_detail_writer.write(hyp_key + print_cer_detail(out_item) + '\n')
+           cer_detail_writer.write("ref:" + '\t' + "".join(ref_dict[hyp_key]) + '\n')
+           cer_detail_writer.write("hyp:" + '\t' + "".join(hyp_dict[hyp_key]) + '\n')
+
+    if rst['Wrd'] > 0:
+        rst['Err'] = round(rst['wrong_words'] * 100 / rst['Wrd'], 2)
+    if rst['Snt'] > 0:
+        rst['S.Err'] = round(rst['wrong_sentences'] * 100 / rst['Snt'], 2)
+
+    cer_detail_writer.write('\n')
+    cer_detail_writer.write("%WER " + str(rst['Err']) + " [ " + str(rst['wrong_words'])+ " / " + str(rst['Wrd']) +
+                            ", " + str(rst['Ins']) + " ins, " + str(rst['Del']) + " del, " + str(rst['Sub']) + " sub ]" + '\n')
+    cer_detail_writer.write("%SER " + str(rst['S.Err']) + " [ " + str(rst['wrong_sentences']) + " / " + str(rst['Snt']) + " ]" + '\n')
+    cer_detail_writer.write("Scored " + str(len(hyp_dict)) + " sentences, " + str(len(hyp_dict) - rst['Snt']) + " not present in hyp." + '\n')
+
+     
+def compute_wer_by_line(hyp,
+                        ref):
+    hyp = list(map(lambda x: x.lower(), hyp))
+    ref = list(map(lambda x: x.lower(), ref))
+
+    len_hyp = len(hyp)
+    len_ref = len(ref)
+
+    cost_matrix = np.zeros((len_hyp + 1, len_ref + 1), dtype=np.int16)
+
+    ops_matrix = np.zeros((len_hyp + 1, len_ref + 1), dtype=np.int8)
+
+    for i in range(len_hyp + 1):
+        cost_matrix[i][0] = i
+    for j in range(len_ref + 1):
+        cost_matrix[0][j] = j
+
+    for i in range(1, len_hyp + 1):
+        for j in range(1, len_ref + 1):
+            if hyp[i - 1] == ref[j - 1]:
+                cost_matrix[i][j] = cost_matrix[i - 1][j - 1]
+            else:
+                substitution = cost_matrix[i - 1][j - 1] + 1
+                insertion = cost_matrix[i - 1][j] + 1
+                deletion = cost_matrix[i][j - 1] + 1
+
+                compare_val = [substitution, insertion, deletion]
+
+                min_val = min(compare_val)
+                operation_idx = compare_val.index(min_val) + 1
+                cost_matrix[i][j] = min_val
+                ops_matrix[i][j] = operation_idx
+
+    match_idx = []
+    i = len_hyp
+    j = len_ref
+    rst = {
+        'nwords': len_ref,
+        'cor': 0,
+        'wrong': 0,
+        'ins': 0,
+        'del': 0,
+        'sub': 0
+    }
+    while i >= 0 or j >= 0:
+        i_idx = max(0, i)
+        j_idx = max(0, j)
+
+        if ops_matrix[i_idx][j_idx] == 0:  # correct
+            if i - 1 >= 0 and j - 1 >= 0:
+                match_idx.append((j - 1, i - 1))
+                rst['cor'] += 1
+
+            i -= 1
+            j -= 1
+
+        elif ops_matrix[i_idx][j_idx] == 2:  # insert
+            i -= 1
+            rst['ins'] += 1
+
+        elif ops_matrix[i_idx][j_idx] == 3:  # delete
+            j -= 1
+            rst['del'] += 1
+
+        elif ops_matrix[i_idx][j_idx] == 1:  # substitute
+            i -= 1
+            j -= 1
+            rst['sub'] += 1
+
+        if i < 0 and j >= 0:
+            rst['del'] += 1
+        elif j < 0 and i >= 0:
+            rst['ins'] += 1
+
+    match_idx.reverse()
+    wrong_cnt = cost_matrix[len_hyp][len_ref]
+    rst['wrong'] = wrong_cnt
+
+    return rst
+
+def print_cer_detail(rst):
+    return ("(" + "nwords=" + str(rst['nwords']) + ",cor=" + str(rst['cor'])
+            + ",ins=" + str(rst['ins']) + ",del=" + str(rst['del']) + ",sub="
+            + str(rst['sub']) + ") corr:" + '{:.2%}'.format(rst['cor']/rst['nwords'])
+            + ",cer:" + '{:.2%}'.format(rst['wrong']/rst['nwords']))
+
+if __name__ == '__main__':
+    if len(sys.argv) != 4:
+        print("usage : python compute-wer.py test.ref test.hyp test.wer")
+        sys.exit(0)
+
+    ref_file = sys.argv[1]
+    hyp_file = sys.argv[2]
+    cer_detail_file = sys.argv[3]
+    compute_wer(ref_file, hyp_file, cer_detail_file)

funasr_local/runtime/python/libtorch/funasr_torch/utils/frontend.py

@@ -0,0 +1,191 @@
+# -*- encoding: utf-8 -*-
+from pathlib import Path
+from typing import Any, Dict, Iterable, List, NamedTuple, Set, Tuple, Union
+
+import numpy as np
+from typeguard import check_argument_types
+import kaldi_native_fbank as knf
+
+root_dir = Path(__file__).resolve().parent
+
+logger_initialized = {}
+
+
+class WavFrontend():
+    """Conventional frontend structure for ASR.
+    """
+
+    def __init__(
+            self,
+            cmvn_file: str = None,
+            fs: int = 16000,
+            window: str = 'hamming',
+            n_mels: int = 80,
+            frame_length: int = 25,
+            frame_shift: int = 10,
+            lfr_m: int = 1,
+            lfr_n: int = 1,
+            dither: float = 1.0,
+            **kwargs,
+    ) -> None:
+        check_argument_types()
+
+        opts = knf.FbankOptions()
+        opts.frame_opts.samp_freq = fs
+        opts.frame_opts.dither = dither
+        opts.frame_opts.window_type = window
+        opts.frame_opts.frame_shift_ms = float(frame_shift)
+        opts.frame_opts.frame_length_ms = float(frame_length)
+        opts.mel_opts.num_bins = n_mels
+        opts.energy_floor = 0
+        opts.frame_opts.snip_edges = True
+        opts.mel_opts.debug_mel = False
+        self.opts = opts
+
+        self.lfr_m = lfr_m
+        self.lfr_n = lfr_n
+        self.cmvn_file = cmvn_file
+
+        if self.cmvn_file:
+            self.cmvn = self.load_cmvn()
+        self.fbank_fn = None
+        self.fbank_beg_idx = 0
+        self.reset_status()
+
+    def fbank(self,
+              waveform: np.ndarray) -> Tuple[np.ndarray, np.ndarray]:
+        waveform = waveform * (1 << 15)
+        self.fbank_fn = knf.OnlineFbank(self.opts)
+        self.fbank_fn.accept_waveform(self.opts.frame_opts.samp_freq, waveform.tolist())
+        frames = self.fbank_fn.num_frames_ready
+        mat = np.empty([frames, self.opts.mel_opts.num_bins])
+        for i in range(frames):
+            mat[i, :] = self.fbank_fn.get_frame(i)
+        feat = mat.astype(np.float32)
+        feat_len = np.array(mat.shape[0]).astype(np.int32)
+        return feat, feat_len
+
+    def fbank_online(self,
+              waveform: np.ndarray) -> Tuple[np.ndarray, np.ndarray]:
+        waveform = waveform * (1 << 15)
+        # self.fbank_fn = knf.OnlineFbank(self.opts)
+        self.fbank_fn.accept_waveform(self.opts.frame_opts.samp_freq, waveform.tolist())
+        frames = self.fbank_fn.num_frames_ready
+        mat = np.empty([frames, self.opts.mel_opts.num_bins])
+        for i in range(self.fbank_beg_idx, frames):
+            mat[i, :] = self.fbank_fn.get_frame(i)
+        # self.fbank_beg_idx += (frames-self.fbank_beg_idx)
+        feat = mat.astype(np.float32)
+        feat_len = np.array(mat.shape[0]).astype(np.int32)
+        return feat, feat_len
+
+    def reset_status(self):
+        self.fbank_fn = knf.OnlineFbank(self.opts)
+        self.fbank_beg_idx = 0
+
+    def lfr_cmvn(self, feat: np.ndarray) -> Tuple[np.ndarray, np.ndarray]:
+        if self.lfr_m != 1 or self.lfr_n != 1:
+            feat = self.apply_lfr(feat, self.lfr_m, self.lfr_n)
+
+        if self.cmvn_file:
+            feat = self.apply_cmvn(feat)
+
+        feat_len = np.array(feat.shape[0]).astype(np.int32)
+        return feat, feat_len
+
+    @staticmethod
+    def apply_lfr(inputs: np.ndarray, lfr_m: int, lfr_n: int) -> np.ndarray:
+        LFR_inputs = []
+
+        T = inputs.shape[0]
+        T_lfr = int(np.ceil(T / lfr_n))
+        left_padding = np.tile(inputs[0], ((lfr_m - 1) // 2, 1))
+        inputs = np.vstack((left_padding, inputs))
+        T = T + (lfr_m - 1) // 2
+        for i in range(T_lfr):
+            if lfr_m <= T - i * lfr_n:
+                LFR_inputs.append(
+                    (inputs[i * lfr_n:i * lfr_n + lfr_m]).reshape(1, -1))
+            else:
+                # process last LFR frame
+                num_padding = lfr_m - (T - i * lfr_n)
+                frame = inputs[i * lfr_n:].reshape(-1)
+                for _ in range(num_padding):
+                    frame = np.hstack((frame, inputs[-1]))
+
+                LFR_inputs.append(frame)
+        LFR_outputs = np.vstack(LFR_inputs).astype(np.float32)
+        return LFR_outputs
+
+    def apply_cmvn(self, inputs: np.ndarray) -> np.ndarray:
+        """
+        Apply CMVN with mvn data
+        """
+        frame, dim = inputs.shape
+        means = np.tile(self.cmvn[0:1, :dim], (frame, 1))
+        vars = np.tile(self.cmvn[1:2, :dim], (frame, 1))
+        inputs = (inputs + means) * vars
+        return inputs
+
+    def load_cmvn(self,) -> np.ndarray:
+        with open(self.cmvn_file, 'r', encoding='utf-8') as f:
+            lines = f.readlines()
+
+        means_list = []
+        vars_list = []
+        for i in range(len(lines)):
+            line_item = lines[i].split()
+            if line_item[0] == '<AddShift>':
+                line_item = lines[i + 1].split()
+                if line_item[0] == '<LearnRateCoef>':
+                    add_shift_line = line_item[3:(len(line_item) - 1)]
+                    means_list = list(add_shift_line)
+                    continue
+            elif line_item[0] == '<Rescale>':
+                line_item = lines[i + 1].split()
+                if line_item[0] == '<LearnRateCoef>':
+                    rescale_line = line_item[3:(len(line_item) - 1)]
+                    vars_list = list(rescale_line)
+                    continue
+
+        means = np.array(means_list).astype(np.float64)
+        vars = np.array(vars_list).astype(np.float64)
+        cmvn = np.array([means, vars])
+        return cmvn
+
+def load_bytes(input):
+    middle_data = np.frombuffer(input, dtype=np.int16)
+    middle_data = np.asarray(middle_data)
+    if middle_data.dtype.kind not in 'iu':
+        raise TypeError("'middle_data' must be an array of integers")
+    dtype = np.dtype('float32')
+    if dtype.kind != 'f':
+        raise TypeError("'dtype' must be a floating point type")
+
+    i = np.iinfo(middle_data.dtype)
+    abs_max = 2 ** (i.bits - 1)
+    offset = i.min + abs_max
+    array = np.frombuffer((middle_data.astype(dtype) - offset) / abs_max, dtype=np.float32)
+    return array
+
+
+def test():
+    path = "/nfs/zhifu.gzf/export/damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch/example/asr_example.wav"
+    import librosa
+    cmvn_file = "/nfs/zhifu.gzf/export/damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch/am.mvn"
+    config_file = "/nfs/zhifu.gzf/export/damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch/config.yaml"
+    from funasr_local.runtime.python.onnxruntime.rapid_paraformer.utils.utils import read_yaml
+    config = read_yaml(config_file)
+    waveform, _ = librosa.load(path, sr=None)
+    frontend = WavFrontend(
+        cmvn_file=cmvn_file,
+        **config['frontend_conf'],
+    )
+    speech, _ = frontend.fbank_online(waveform)  #1d, (sample,), numpy
+    feat, feat_len = frontend.lfr_cmvn(speech) # 2d, (frame, 450), np.float32 -> torch, torch.from_numpy(), dtype, (1, frame, 450)
+    
+    frontend.reset_status() # clear cache
+    return feat, feat_len
+
+if __name__ == '__main__':
+    test()

funasr_local/runtime/python/libtorch/funasr_torch/utils/postprocess_utils.py

@@ -0,0 +1,240 @@
+# Copyright (c) Alibaba, Inc. and its affiliates.
+
+import string
+import logging
+from typing import Any, List, Union
+
+
+def isChinese(ch: str):
+    if '\u4e00' <= ch <= '\u9fff' or '\u0030' <= ch <= '\u0039':
+        return True
+    return False
+
+
+def isAllChinese(word: Union[List[Any], str]):
+    word_lists = []
+    for i in word:
+        cur = i.replace(' ', '')
+        cur = cur.replace('</s>', '')
+        cur = cur.replace('<s>', '')
+        word_lists.append(cur)
+
+    if len(word_lists) == 0:
+        return False
+
+    for ch in word_lists:
+        if isChinese(ch) is False:
+            return False
+    return True
+
+
+def isAllAlpha(word: Union[List[Any], str]):
+    word_lists = []
+    for i in word:
+        cur = i.replace(' ', '')
+        cur = cur.replace('</s>', '')
+        cur = cur.replace('<s>', '')
+        word_lists.append(cur)
+
+    if len(word_lists) == 0:
+        return False
+
+    for ch in word_lists:
+        if ch.isalpha() is False and ch != "'":
+            return False
+        elif ch.isalpha() is True and isChinese(ch) is True:
+            return False
+
+    return True
+
+
+# def abbr_dispose(words: List[Any]) -> List[Any]:
+def abbr_dispose(words: List[Any], time_stamp: List[List] = None) -> List[Any]:
+    words_size = len(words)
+    word_lists = []
+    abbr_begin = []
+    abbr_end = []
+    last_num = -1
+    ts_lists = []
+    ts_nums = []
+    ts_index = 0
+    for num in range(words_size):
+        if num <= last_num:
+            continue
+
+        if len(words[num]) == 1 and words[num].encode('utf-8').isalpha():
+            if num + 1 < words_size and words[
+                    num + 1] == ' ' and num + 2 < words_size and len(
+                        words[num +
+                              2]) == 1 and words[num +
+                                                 2].encode('utf-8').isalpha():
+                # found the begin of abbr
+                abbr_begin.append(num)
+                num += 2
+                abbr_end.append(num)
+                # to find the end of abbr
+                while True:
+                    num += 1
+                    if num < words_size and words[num] == ' ':
+                        num += 1
+                        if num < words_size and len(
+                                words[num]) == 1 and words[num].encode(
+                                    'utf-8').isalpha():
+                            abbr_end.pop()
+                            abbr_end.append(num)
+                            last_num = num
+                        else:
+                            break
+                    else:
+                        break
+
+    for num in range(words_size):
+        if words[num] == ' ':
+            ts_nums.append(ts_index)
+        else:
+            ts_nums.append(ts_index)
+            ts_index += 1 
+    last_num = -1
+    for num in range(words_size):
+        if num <= last_num:
+            continue
+
+        if num in abbr_begin:
+            if time_stamp is not None:
+                begin = time_stamp[ts_nums[num]][0]
+            word_lists.append(words[num].upper())
+            num += 1
+            while num < words_size:
+                if num in abbr_end:
+                    word_lists.append(words[num].upper())
+                    last_num = num
+                    break
+                else:
+                    if words[num].encode('utf-8').isalpha():
+                        word_lists.append(words[num].upper())
+                num += 1
+            if time_stamp is not None:
+                end = time_stamp[ts_nums[num]][1]
+                ts_lists.append([begin, end])
+        else:
+            word_lists.append(words[num])
+            if time_stamp is not None and words[num] != ' ':
+                begin = time_stamp[ts_nums[num]][0]
+                end = time_stamp[ts_nums[num]][1]
+                ts_lists.append([begin, end])
+                begin = end
+
+    if time_stamp is not None:
+        return word_lists, ts_lists
+    else:
+        return word_lists
+
+
+def sentence_postprocess(words: List[Any], time_stamp: List[List] = None):
+    middle_lists = []
+    word_lists = []
+    word_item = ''
+    ts_lists = []
+
+    # wash words lists
+    for i in words:
+        word = ''
+        if isinstance(i, str):
+            word = i
+        else:
+            word = i.decode('utf-8')
+
+        if word in ['<s>', '</s>', '<unk>']:
+            continue
+        else:
+            middle_lists.append(word)
+
+    # all chinese characters
+    if isAllChinese(middle_lists):
+        for i, ch in enumerate(middle_lists):
+            word_lists.append(ch.replace(' ', ''))
+        if time_stamp is not None:
+            ts_lists = time_stamp
+
+    # all alpha characters
+    elif isAllAlpha(middle_lists):
+        ts_flag = True
+        for i, ch in enumerate(middle_lists):
+            if ts_flag and time_stamp is not None:
+                begin = time_stamp[i][0]
+                end = time_stamp[i][1]
+            word = ''
+            if '@@' in ch:
+                word = ch.replace('@@', '')
+                word_item += word
+                if time_stamp is not None:
+                    ts_flag = False
+                    end = time_stamp[i][1]
+            else:
+                word_item += ch
+                word_lists.append(word_item)
+                word_lists.append(' ')
+                word_item = ''
+                if time_stamp is not None:
+                    ts_flag = True
+                    end = time_stamp[i][1]
+                    ts_lists.append([begin, end])
+                    begin = end
+
+    # mix characters
+    else:
+        alpha_blank = False
+        ts_flag = True
+        begin = -1
+        end = -1
+        for i, ch in enumerate(middle_lists):
+            if ts_flag and time_stamp is not None:
+                begin = time_stamp[i][0]
+                end = time_stamp[i][1]
+            word = ''
+            if isAllChinese(ch):
+                if alpha_blank is True:
+                    word_lists.pop()
+                word_lists.append(ch)
+                alpha_blank = False
+                if time_stamp is not None:
+                    ts_flag = True
+                    ts_lists.append([begin, end])
+                    begin = end
+            elif '@@' in ch:
+                word = ch.replace('@@', '')
+                word_item += word
+                alpha_blank = False
+                if time_stamp is not None:
+                    ts_flag = False
+                    end = time_stamp[i][1]
+            elif isAllAlpha(ch):
+                word_item += ch
+                word_lists.append(word_item)
+                word_lists.append(' ')
+                word_item = ''
+                alpha_blank = True
+                if time_stamp is not None:
+                    ts_flag = True
+                    end = time_stamp[i][1] 
+                    ts_lists.append([begin, end])
+                    begin = end
+            else:
+                raise ValueError('invalid character: {}'.format(ch))
+
+    if time_stamp is not None: 
+        word_lists, ts_lists = abbr_dispose(word_lists, ts_lists)
+        real_word_lists = []
+        for ch in word_lists:
+            if ch != ' ':
+                real_word_lists.append(ch)
+        sentence = ' '.join(real_word_lists).strip()
+        return sentence, ts_lists, real_word_lists
+    else:
+        word_lists = abbr_dispose(word_lists)
+        real_word_lists = []
+        for ch in word_lists:
+            if ch != ' ':
+                real_word_lists.append(ch)
+        sentence = ''.join(word_lists).strip()
+        return sentence, real_word_lists

funasr_local/runtime/python/libtorch/funasr_torch/utils/timestamp_utils.py

@@ -0,0 +1,59 @@
+import numpy as np
+
+
+def time_stamp_lfr6_onnx(us_cif_peak, char_list, begin_time=0.0, total_offset=-1.5):
+    if not len(char_list):
+        return []
+    START_END_THRESHOLD = 5
+    MAX_TOKEN_DURATION = 30
+    TIME_RATE = 10.0 * 6 / 1000 / 3  #  3 times upsampled
+    cif_peak = us_cif_peak.reshape(-1)
+    num_frames = cif_peak.shape[-1]
+    if char_list[-1] == '</s>':
+        char_list = char_list[:-1]
+    # char_list = [i for i in text]
+    timestamp_list = []
+    new_char_list = []
+    # for bicif model trained with large data, cif2 actually fires when a character starts
+    # so treat the frames between two peaks as the duration of the former token
+    fire_place = np.where(cif_peak>1.0-1e-4)[0] + total_offset  # np format
+    num_peak = len(fire_place)
+    assert num_peak == len(char_list) + 1 # number of peaks is supposed to be number of tokens + 1
+    # begin silence
+    if fire_place[0] > START_END_THRESHOLD:
+        # char_list.insert(0, '<sil>')
+        timestamp_list.append([0.0, fire_place[0]*TIME_RATE])
+        new_char_list.append('<sil>')
+    # tokens timestamp
+    for i in range(len(fire_place)-1):
+        new_char_list.append(char_list[i])
+        if i == len(fire_place)-2 or MAX_TOKEN_DURATION < 0 or fire_place[i+1] - fire_place[i] < MAX_TOKEN_DURATION:
+            timestamp_list.append([fire_place[i]*TIME_RATE, fire_place[i+1]*TIME_RATE])
+        else:
+            # cut the duration to token and sil of the 0-weight frames last long
+            _split = fire_place[i] + MAX_TOKEN_DURATION
+            timestamp_list.append([fire_place[i]*TIME_RATE, _split*TIME_RATE])
+            timestamp_list.append([_split*TIME_RATE, fire_place[i+1]*TIME_RATE])
+            new_char_list.append('<sil>')
+    # tail token and end silence
+    if num_frames - fire_place[-1] > START_END_THRESHOLD:
+        _end = (num_frames + fire_place[-1]) / 2
+        timestamp_list[-1][1] = _end*TIME_RATE
+        timestamp_list.append([_end*TIME_RATE, num_frames*TIME_RATE])
+        new_char_list.append("<sil>")
+    else:
+        timestamp_list[-1][1] = num_frames*TIME_RATE
+    if begin_time:  # add offset time in model with vad
+        for i in range(len(timestamp_list)):
+            timestamp_list[i][0] = timestamp_list[i][0] + begin_time / 1000.0
+            timestamp_list[i][1] = timestamp_list[i][1] + begin_time / 1000.0
+    assert len(new_char_list) == len(timestamp_list)
+    res_str = ""
+    for char, timestamp in zip(new_char_list, timestamp_list):
+        res_str += "{} {} {};".format(char, timestamp[0], timestamp[1])
+    res = []
+    for char, timestamp in zip(new_char_list, timestamp_list):
+        if char != '<sil>':
+            res.append([int(timestamp[0] * 1000), int(timestamp[1] * 1000)])
+    return res_str, res
+    

funasr_local/runtime/python/libtorch/funasr_torch/utils/utils.py

@@ -0,0 +1,162 @@
+# -*- encoding: utf-8 -*-
+
+import functools
+import logging
+import pickle
+from pathlib import Path
+from typing import Any, Dict, Iterable, List, NamedTuple, Set, Tuple, Union
+
+import numpy as np
+import yaml
+
+from typeguard import check_argument_types
+
+import warnings
+
+root_dir = Path(__file__).resolve().parent
+
+logger_initialized = {}
+
+
+class TokenIDConverter():
+    def __init__(self, token_list: Union[List, str],
+                 ):
+        check_argument_types()
+
+        self.token_list = token_list
+        self.unk_symbol = token_list[-1]
+        self.token2id = {v: i for i, v in enumerate(self.token_list)}
+        self.unk_id = self.token2id[self.unk_symbol]
+
+
+    def get_num_vocabulary_size(self) -> int:
+        return len(self.token_list)
+
+    def ids2tokens(self,
+                   integers: Union[np.ndarray, Iterable[int]]) -> List[str]:
+        if isinstance(integers, np.ndarray) and integers.ndim != 1:
+            raise TokenIDConverterError(
+                f"Must be 1 dim ndarray, but got {integers.ndim}")
+        return [self.token_list[i] for i in integers]
+
+    def tokens2ids(self, tokens: Iterable[str]) -> List[int]:
+
+        return [self.token2id.get(i, self.unk_id) for i in tokens]
+
+
+class CharTokenizer():
+    def __init__(
+        self,
+        symbol_value: Union[Path, str, Iterable[str]] = None,
+        space_symbol: str = "<space>",
+        remove_non_linguistic_symbols: bool = False,
+    ):
+        check_argument_types()
+
+        self.space_symbol = space_symbol
+        self.non_linguistic_symbols = self.load_symbols(symbol_value)
+        self.remove_non_linguistic_symbols = remove_non_linguistic_symbols
+
+    @staticmethod
+    def load_symbols(value: Union[Path, str, Iterable[str]] = None) -> Set:
+        if value is None:
+            return set()
+
+        if isinstance(value, Iterable[str]):
+            return set(value)
+
+        file_path = Path(value)
+        if not file_path.exists():
+            logging.warning("%s doesn't exist.", file_path)
+            return set()
+
+        with file_path.open("r", encoding="utf-8") as f:
+            return set(line.rstrip() for line in f)
+
+    def text2tokens(self, line: Union[str, list]) -> List[str]:
+        tokens = []
+        while len(line) != 0:
+            for w in self.non_linguistic_symbols:
+                if line.startswith(w):
+                    if not self.remove_non_linguistic_symbols:
+                        tokens.append(line[: len(w)])
+                    line = line[len(w):]
+                    break
+            else:
+                t = line[0]
+                if t == " ":
+                    t = "<space>"
+                tokens.append(t)
+                line = line[1:]
+        return tokens
+
+    def tokens2text(self, tokens: Iterable[str]) -> str:
+        tokens = [t if t != self.space_symbol else " " for t in tokens]
+        return "".join(tokens)
+
+    def __repr__(self):
+        return (
+            f"{self.__class__.__name__}("
+            f'space_symbol="{self.space_symbol}"'
+            f'non_linguistic_symbols="{self.non_linguistic_symbols}"'
+            f")"
+        )
+
+
+
+class Hypothesis(NamedTuple):
+    """Hypothesis data type."""
+
+    yseq: np.ndarray
+    score: Union[float, np.ndarray] = 0
+    scores: Dict[str, Union[float, np.ndarray]] = dict()
+    states: Dict[str, Any] = dict()
+
+    def asdict(self) -> dict:
+        """Convert data to JSON-friendly dict."""
+        return self._replace(
+            yseq=self.yseq.tolist(),
+            score=float(self.score),
+            scores={k: float(v) for k, v in self.scores.items()},
+        )._asdict()
+
+
+def read_yaml(yaml_path: Union[str, Path]) -> Dict:
+    if not Path(yaml_path).exists():
+        raise FileExistsError(f'The {yaml_path} does not exist.')
+
+    with open(str(yaml_path), 'rb') as f:
+        data = yaml.load(f, Loader=yaml.Loader)
+    return data
+
+
+@functools.lru_cache()
+def get_logger(name='funasr_local_torch'):
+    """Initialize and get a logger by name.
+    If the logger has not been initialized, this method will initialize the
+    logger by adding one or two handlers, otherwise the initialized logger will
+    be directly returned. During initialization, a StreamHandler will always be
+    added.
+    Args:
+        name (str): Logger name.
+    Returns:
+        logging.Logger: The expected logger.
+    """
+    logger = logging.getLogger(name)
+    if name in logger_initialized:
+        return logger
+
+    for logger_name in logger_initialized:
+        if name.startswith(logger_name):
+            return logger
+
+    formatter = logging.Formatter(
+        '[%(asctime)s] %(name)s %(levelname)s: %(message)s',
+        datefmt="%Y/%m/%d %H:%M:%S")
+
+    sh = logging.StreamHandler()
+    sh.setFormatter(formatter)
+    logger.addHandler(sh)
+    logger_initialized[name] = True
+    logger.propagate = False
+    return logger

funasr_local/runtime/python/libtorch/setup.py

@@ -0,0 +1,43 @@
+# -*- encoding: utf-8 -*-
+from pathlib import Path
+import setuptools
+from setuptools import find_packages
+
+def get_readme():
+    root_dir = Path(__file__).resolve().parent
+    readme_path = str(root_dir / 'README.md')
+    print(readme_path)
+    with open(readme_path, 'r', encoding='utf-8') as f:
+        readme = f.read()
+    return readme
+
+
+
+setuptools.setup(
+    name='funasr_local_torch',
+    version='0.0.4',
+    platforms="Any",
+    url="https://github.com/alibaba-damo-academy/FunASR.git",
+    author="Speech Lab of DAMO Academy, Alibaba Group",
+    author_email="funasr_local@list.alibaba-inc.com",
+    description="FunASR: A Fundamental End-to-End Speech Recognition Toolkit",
+    license="The MIT License",
+    long_description=get_readme(),
+    long_description_content_type='text/markdown',
+    include_package_data=True,
+    install_requires=["librosa", "onnxruntime>=1.7.0",
+                      "scipy", "numpy>=1.19.3",
+                      "typeguard", "kaldi-native-fbank",
+                      "PyYAML>=5.1.2", "torch-quant >= 0.4.0"],
+    packages=find_packages(include=["torch_paraformer*"]),
+    keywords=[
+        'funasr_local, paraformer, funasr_local_torch'
+    ],
+    classifiers=[
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
+    ],
+)