From 8dab6d184a034ca86eafa644ea0d2100aadfe27d Mon Sep 17 00:00:00 2001
From: jmwang66 <wangjiaming.wjm@alibaba-inc.com>
Date: 星期二, 09 五月 2023 10:58:33 +0800
Subject: [PATCH] Merge pull request #473 from alibaba-damo-academy/dev_smohan

---
 funasr/runtime/python/onnxruntime/funasr_onnx/vad_bin.py |  173 +++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 159 insertions(+), 14 deletions(-)

diff --git a/funasr/runtime/python/onnxruntime/funasr_onnx/vad_bin.py b/funasr/runtime/python/onnxruntime/funasr_onnx/vad_bin.py
index 0b7ecff..022f1e7 100644
--- a/funasr/runtime/python/onnxruntime/funasr_onnx/vad_bin.py
+++ b/funasr/runtime/python/onnxruntime/funasr_onnx/vad_bin.py
@@ -1,4 +1,6 @@
 # -*- encoding: utf-8 -*-
+# Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights Reserved.
+#  MIT License  (https://opensource.org/licenses/MIT)
 
 import os.path
 from pathlib import Path
@@ -11,13 +13,18 @@
 from .utils.utils import (ONNXRuntimeError,
                           OrtInferSession, get_logger,
                           read_yaml)
-from .utils.frontend import WavFrontend
+from .utils.frontend import WavFrontend, WavFrontendOnline
 from .utils.e2e_vad import E2EVadModel
 
 logging = get_logger()
 
 
 class Fsmn_vad():
+	"""
+	Author: Speech Lab of DAMO Academy, Alibaba Group
+	Deep-FSMN for Large Vocabulary Continuous Speech Recognition
+	https://arxiv.org/abs/1803.05030
+	"""
 	def __init__(self, model_dir: Union[str, Path] = None,
 	             batch_size: int = 1,
 	             device_id: Union[str, int] = "-1",
@@ -53,39 +60,56 @@
 		proj_dim = self.encoder_conf["proj_dim"]
 		lorder = self.encoder_conf["lorder"]
 		for i in range(fsmn_layers):
-			cache = np.zeros(1, proj_dim, lorder-1, 1).astype(np.float32)
+			cache = np.zeros((1, proj_dim, lorder-1, 1)).astype(np.float32)
 			in_cache.append(cache)
 		return in_cache
 		
 	
-	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)
+	def __call__(self, audio_in: Union[str, np.ndarray, List[str]], **kwargs) -> List:
+		waveform_list = self.load_data(audio_in, self.frontend.opts.frame_opts.samp_freq)
 		waveform_nums = len(waveform_list)
 		is_final = kwargs.get('kwargs', False)
 
-		asr_res = []
+		segments = [[]] * self.batch_size
 		for beg_idx in range(0, waveform_nums, self.batch_size):
 			
 			end_idx = min(waveform_nums, beg_idx + self.batch_size)
 			waveform = waveform_list[beg_idx:end_idx]
 			feats, feats_len = self.extract_feat(waveform)
+			waveform = np.array(waveform)
 			param_dict = kwargs.get('param_dict', dict())
-			in_cache = param_dict.get('cache', list())
+			in_cache = param_dict.get('in_cache', list())
 			in_cache = self.prepare_cache(in_cache)
 			try:
-				inputs = [feats]
-				inputs.extend(in_cache)
-				scores, out_caches = self.infer(inputs)
-				param_dict['cache'] = out_caches
-				segments = self.vad_scorer(scores, waveform[0][None, :], is_final=is_final, max_end_sil=self.max_end_sil)
+				t_offset = 0
+				step = int(min(feats_len.max(), 6000))
+				for t_offset in range(0, int(feats_len), min(step, feats_len - t_offset)):
+					if t_offset + step >= feats_len - 1:
+						step = feats_len - t_offset
+						is_final = True
+					else:
+						is_final = False
+					feats_package = feats[:, t_offset:int(t_offset + step), :]
+					waveform_package = waveform[:, t_offset * 160:min(waveform.shape[-1], (int(t_offset + step) - 1) * 160 + 400)]
+
+					inputs = [feats_package]
+					# inputs = [feats]
+					inputs.extend(in_cache)
+					scores, out_caches = self.infer(inputs)
+					in_cache = out_caches
+					segments_part = self.vad_scorer(scores, waveform_package, is_final=is_final, max_end_sil=self.max_end_sil, online=False)
+					# segments = self.vad_scorer(scores, waveform[0][None, :], is_final=is_final, max_end_sil=self.max_end_sil)
+
+					if segments_part:
+						for batch_num in range(0, self.batch_size):
+							segments[batch_num] += segments_part[batch_num]
 				
 			except ONNXRuntimeError:
 				# logging.warning(traceback.format_exc())
 				logging.warning("input wav is silence or noise")
 				segments = ''
-			asr_res.append(segments)
 	
-		return asr_res
+		return segments
 
 	def load_data(self,
 	              wav_content: Union[str, np.ndarray, List[str]], fs: int = None) -> List:
@@ -134,4 +158,125 @@
 		outputs = self.ort_infer(feats)
 		scores, out_caches = outputs[0], outputs[1:]
 		return scores, out_caches
-	
\ No newline at end of file
+
+
+class Fsmn_vad_online():
+	"""
+	Author: Speech Lab of DAMO Academy, Alibaba Group
+	Deep-FSMN for Large Vocabulary Continuous Speech Recognition
+	https://arxiv.org/abs/1803.05030
+	"""
+	def __init__(self, model_dir: Union[str, Path] = None,
+	             batch_size: int = 1,
+	             device_id: Union[str, int] = "-1",
+	             quantize: bool = False,
+	             intra_op_num_threads: int = 4,
+	             max_end_sil: int = None,
+	             ):
+		
+		if not Path(model_dir).exists():
+			raise FileNotFoundError(f'{model_dir} does not exist.')
+		
+		model_file = os.path.join(model_dir, 'model.onnx')
+		if quantize:
+			model_file = os.path.join(model_dir, 'model_quant.onnx')
+		config_file = os.path.join(model_dir, 'vad.yaml')
+		cmvn_file = os.path.join(model_dir, 'vad.mvn')
+		config = read_yaml(config_file)
+		
+		self.frontend = WavFrontendOnline(
+			cmvn_file=cmvn_file,
+			**config['frontend_conf']
+		)
+		self.ort_infer = OrtInferSession(model_file, device_id, intra_op_num_threads=intra_op_num_threads)
+		self.batch_size = batch_size
+		self.vad_scorer = E2EVadModel(config["vad_post_conf"])
+		self.max_end_sil = max_end_sil if max_end_sil is not None else config["vad_post_conf"]["max_end_silence_time"]
+		self.encoder_conf = config["encoder_conf"]
+	
+	def prepare_cache(self, in_cache: list = []):
+		if len(in_cache) > 0:
+			return in_cache
+		fsmn_layers = self.encoder_conf["fsmn_layers"]
+		proj_dim = self.encoder_conf["proj_dim"]
+		lorder = self.encoder_conf["lorder"]
+		for i in range(fsmn_layers):
+			cache = np.zeros((1, proj_dim, lorder - 1, 1)).astype(np.float32)
+			in_cache.append(cache)
+		return in_cache
+	
+	def __call__(self, audio_in: np.ndarray, **kwargs) -> List:
+		waveforms = np.expand_dims(audio_in, axis=0)
+		
+		param_dict = kwargs.get('param_dict', dict())
+		is_final = param_dict.get('is_final', False)
+		feats, feats_len = self.extract_feat(waveforms, is_final)
+		segments = []
+		if feats.size != 0:
+			in_cache = param_dict.get('in_cache', list())
+			in_cache = self.prepare_cache(in_cache)
+			try:
+				inputs = [feats]
+				inputs.extend(in_cache)
+				scores, out_caches = self.infer(inputs)
+				param_dict['in_cache'] = out_caches
+				waveforms = self.frontend.get_waveforms()
+				segments = self.vad_scorer(scores, waveforms, is_final=is_final, max_end_sil=self.max_end_sil,
+				                           online=True)
+			
+			
+			except ONNXRuntimeError:
+				# logging.warning(traceback.format_exc())
+				logging.warning("input wav is silence or noise")
+				segments = []
+		return segments
+	
+	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,
+	                 waveforms: np.ndarray, is_final: bool = False
+	                 ) -> Tuple[np.ndarray, np.ndarray]:
+		waveforms_lens = np.zeros(waveforms.shape[0]).astype(np.int32)
+		for idx, waveform in enumerate(waveforms):
+			waveforms_lens[idx] = waveform.shape[-1]
+		
+		feats, feats_len = self.frontend.extract_fbank(waveforms, waveforms_lens, is_final)
+		# 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)
+		return feats.astype(np.float32), feats_len.astype(np.int32)
+	
+	@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: List) -> Tuple[np.ndarray, np.ndarray]:
+		
+		outputs = self.ort_infer(feats)
+		scores, out_caches = outputs[0], outputs[1:]
+		return scores, out_caches
+

--
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