import logging
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import numpy as np
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import soundfile
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import kaldiio
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from funasr.utils.job_runner import MultiProcessRunnerV3
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from funasr.utils.misc import load_scp_as_list, load_scp_as_dict
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import os
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import argparse
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from collections import OrderedDict
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import random
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from typing import List, Dict
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from copy import deepcopy
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import json
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class MyRunner(MultiProcessRunnerV3):
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def prepare(self, parser: argparse.ArgumentParser):
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parser.add_argument("--label_scp", type=str, required=True)
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parser.add_argument("--wav_scp", type=str, required=True)
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parser.add_argument("--utt2spk", type=str, required=True)
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parser.add_argument("--spk2meeting", type=str, required=True)
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parser.add_argument("--utt2xvec", type=str, required=True)
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parser.add_argument("--out_dir", type=str, required=True)
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parser.add_argument("--chunk_size", type=float, default=16)
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parser.add_argument("--chunk_shift", type=float, default=4)
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parser.add_argument("--frame_shift", type=float, default=0.01)
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parser.add_argument("--embedding_dim", type=int, default=None)
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parser.add_argument("--average_emb_num", type=int, default=0)
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parser.add_argument("--subset", type=int, default=0)
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parser.add_argument("--data_dict", type=str, default=None)
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args = parser.parse_args()
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if not os.path.exists(args.out_dir):
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os.makedirs(args.out_dir)
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args.chunk_size = int(args.chunk_size / args.frame_shift)
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args.chunk_shift = int(args.chunk_shift / args.frame_shift)
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if not os.path.exists(args.data_dict):
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label_list = load_scp_as_list(args.label_scp)
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wav_scp = load_scp_as_dict(args.wav_scp)
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utt2spk = load_scp_as_dict(args.utt2spk)
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utt2xvec = load_scp_as_dict(args.utt2xvec)
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spk2meeting = load_scp_as_dict(args.spk2meeting)
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if args.embedding_dim is None:
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args.embedding_dim = kaldiio.load_mat(random.choice(utt2xvec)).shape[1]
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logging.info("Embedding dim is detected as {}.".format(args.embedding_dim))
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meeting2spks = OrderedDict()
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for spk, meeting in spk2meeting.items():
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if meeting not in meeting2spks:
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meeting2spks[meeting] = []
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meeting2spks[meeting].append(spk)
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spk2utts = OrderedDict()
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for utt, spk in utt2spk.items():
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if spk not in spk2utts:
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spk2utts[spk] = []
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spk2utts[spk].append(utt)
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os.makedirs(os.path.dirname(args.data_dict), exist_ok=True)
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json.dump({
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"label_list": label_list, "wav_scp": wav_scp, "utt2xvec": utt2xvec,
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"spk2utts": spk2utts, "meeting2spks": meeting2spks
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}, open(args.data_dict, "wt", encoding="utf-8"), ensure_ascii=False, indent=4)
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else:
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data_dict = json.load(open(args.data_dict, "rt", encoding="utf-8"))
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label_list = data_dict["label_list"]
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wav_scp = data_dict["wav_scp"]
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utt2xvec = data_dict["utt2xvec"]
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spk2utts = data_dict["spk2utts"]
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meeting2spks = data_dict["meeting2spks"]
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return label_list, (wav_scp, utt2xvec, spk2utts, meeting2spks), args
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def post(self, results_list, args):
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pass
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def simu_wav_chunk(spk, spk2utts, wav_scp, sample_length):
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utt_list = spk2utts[spk]
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wav_list = []
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cur_length = 0
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while cur_length < sample_length:
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uttid = random.choice(utt_list)
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wav, fs = soundfile.read(wav_scp[uttid], dtype='float32')
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wav_list.append(wav)
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cur_length += len(wav)
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concat_wav = np.concatenate(wav_list, axis=0)
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start = random.randint(0, len(concat_wav) - sample_length)
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return concat_wav[start:]
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def calculate_embedding(spk, spk2utts, utt2xvec, embedding_dim, average_emb_num):
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# process for dummy speaker
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if spk == "None":
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return np.zeros((1, embedding_dim), dtype=np.float32)
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# calculate averaged speaker embeddings
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utt_list = spk2utts[spk]
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if average_emb_num == 0 or average_emb_num > len(utt_list):
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xvec_list = [kaldiio.load_mat(utt2xvec[utt]) for utt in utt_list]
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else:
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xvec_list = [kaldiio.load_mat(utt2xvec[utt]) for utt in random.sample(utt_list, average_emb_num)]
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xvec = np.mean(np.concatenate(xvec_list, axis=0), axis=0)
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return xvec
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def simu_chunk(
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frame_label: np.ndarray,
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sample_label: np.ndarray,
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wav_scp: Dict[str, str],
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utt2xvec: Dict[str, str],
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spk2utts: Dict[str, List[str]],
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meeting2spks: Dict[str, List[str]],
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all_speaker_list: List[str],
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meeting_list: List[str],
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embedding_dim: int,
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average_emb_num: int,
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):
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frame_length, max_spk_num = frame_label.shape
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sample_length = sample_label.shape[0]
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positive_speaker_num = np.max(frame_label.sum(axis=1), axis=0)
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pos_speaker_list = deepcopy(meeting2spks[random.choice(meeting_list)])
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# get positive speakers
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if len(pos_speaker_list) >= positive_speaker_num:
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pos_speaker_list = random.sample(pos_speaker_list, positive_speaker_num)
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else:
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while len(pos_speaker_list) < positive_speaker_num:
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_spk = random.choice(all_speaker_list)
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if _spk not in pos_speaker_list:
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pos_speaker_list.extend(_spk)
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# get negative speakers
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negative_speaker_num = random.randint(0, max_spk_num - positive_speaker_num)
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neg_speaker_list = []
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while len(neg_speaker_list) < negative_speaker_num:
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_spk = random.choice(all_speaker_list)
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if _spk not in pos_speaker_list and _spk not in neg_speaker_list:
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neg_speaker_list.extend(_spk)
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neg_speaker_list.extend(["None"] * (max_spk_num - positive_speaker_num - negative_speaker_num))
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random.shuffle(pos_speaker_list)
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random.shuffle(neg_speaker_list)
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seperated_wav = np.zeros(frame_label.shape, dtype=np.float32)
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this_spk_list = []
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for idx, frame_num in enumerate(frame_label.sum(axis=0)):
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if frame_num > 0:
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spk = pos_speaker_list.pop(0)
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this_spk_list.append(spk)
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simu_spk_wav = simu_wav_chunk(spk, spk2utts, wav_scp, sample_length)
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seperated_wav[:, idx] = simu_spk_wav
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else:
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spk = neg_speaker_list.pop(0)
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this_spk_list.append(spk)
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# calculate mixed wav
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mixed_wav = np.sum(seperated_wav * sample_label, axis=1)
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# shuffle the order of speakers
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shuffle_idx = list(range(max_spk_num))
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random.shuffle(shuffle_idx)
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this_spk_list = [this_spk_list[x] for x in shuffle_idx]
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seperated_wav = seperated_wav.transpose([0, 1])[shuffle_idx].transpose([0, 1])
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frame_label = frame_label.transpose([0, 1])[shuffle_idx].transpose([0, 1])
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# calculate profile and pse_label
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profile = [calculate_embedding(spk, spk2utts, utt2xvec, embedding_dim, average_emb_num)
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for spk in this_spk_list]
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# pse_weights = 2 ** np.arange(max_spk_num)
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# pse_label = np.sum(frame_label * pse_weights[np.newaxis, :], axis=1)
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# pse_label = pse_label.astype(str).tolist()
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return mixed_wav, seperated_wav, profile, frame_label
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def process(task_args):
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task_idx, task_list, (wav_scp, utt2xvec, spk2utts, meeting2spks), args = task_args
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out_path = os.path.join(args.out_dir, "wav_mix.{}".format(task_idx+1))
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wav_mix_writer = kaldiio.WriteHelper('ark,scp:{}.ark,{}.scp'.format(out_path, out_path))
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out_path = os.path.join(args.out_dir, "wav_sep.{}".format(task_idx + 1))
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wav_sep_writer = kaldiio.WriteHelper('ark,scp:{}.ark,{}.scp'.format(out_path, out_path))
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out_path = os.path.join(args.out_dir, "profile.{}".format(task_idx + 1))
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profile_writer = kaldiio.WriteHelper('ark,scp:{}.ark,{}.scp'.format(out_path, out_path))
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out_path = os.path.join(args.out_dir, "frame_label.{}".format(task_idx + 1))
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label_writer = kaldiio.WriteHelper('ark,scp:{}.ark,{}.scp'.format(out_path, out_path))
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speaker_list, meeting_list = list(spk2utts.keys()), list(meeting2spks.keys())
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idx = 0
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for org_mid, label_path in task_list:
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rand_shift = random.randint(0, int(args.chunk_shift / args.frame_shift))
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whole_label = kaldiio.load_mat(label_path)
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whole_label = whole_label[rand_shift:]
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num_chunk = (whole_label.shape[0] - args.chunk_size) // args.chunk_shift + 1
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for i in range(num_chunk):
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idx = idx + 1
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st = int((i*args.chunk_shift) / args.frame_shift)
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ed = int((i*args.chunk_shift+args.chunk_size) / args.frame_shift)
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utt_id = "subset{}_part{}_{}_{:06d}_{:06d}".format(
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args.subset + 1, task_idx + 1, org_mid, st, ed
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)
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frame_label = whole_label[st: ed, :]
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sample_label = frame_label.repeat(int(args.sr * args.frame_shift), axis=0)
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mix_wav, seg_wav, profile, frame_label = simu_chunk(
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frame_label, sample_label, wav_scp, utt2xvec, spk2utts, meeting2spks,
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speaker_list, meeting_list, args.embedding_dim, args.average_emb_num
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)
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wav_mix_writer(utt_id, mix_wav)
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wav_sep_writer(utt_id, seg_wav)
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profile_writer(utt_id, profile)
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label_writer(utt_id, frame_label)
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wav_mix_writer.close()
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wav_sep_writer.close()
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profile_writer.close()
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label_writer.close()
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return None
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if __name__ == '__main__':
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my_runner = MyRunner(process)
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my_runner.run()
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