Merge branch 'develop' into ngram

examples/csmsc/tts0/local/inference.sh

@@ -27,20 +27,8 @@ if [ ${stage} -le 1 ] && [ ${stop_stage} -ge 1 ]; then
         --phones_dict=dump/phone_id_map.txt
 fi
 
-# style melgan
-# style melgan's Dygraph to Static Graph is not ready now
-if [ ${stage} -le 2 ] && [ ${stop_stage} -ge 2 ]; then
-    python3 ${BIN_DIR}/../inference.py \
-        --inference_dir=${train_output_path}/inference \
-        --am=tacotron2_csmsc \
-        --voc=style_melgan_csmsc \
-        --text=${BIN_DIR}/../sentences.txt \
-        --output_dir=${train_output_path}/pd_infer_out \
-        --phones_dict=dump/phone_id_map.txt
-fi
-
 # hifigan
-if [ ${stage} -le 3 ] && [ ${stop_stage} -ge 3 ]; then
+if [ ${stage} -le 2 ] && [ ${stop_stage} -ge 2 ]; then
     python3 ${BIN_DIR}/../inference.py \
         --inference_dir=${train_output_path}/inference \
         --am=tacotron2_csmsc \

examples/csmsc/tts3/local/inference.sh

@@ -28,7 +28,6 @@ if [ ${stage} -le 1 ] && [ ${stop_stage} -ge 1 ]; then
         --phones_dict=dump/phone_id_map.txt
 fi
 
-
 # hifigan
 if [ ${stage} -le 2 ] && [ ${stop_stage} -ge 2 ]; then
     python3 ${BIN_DIR}/../inference.py \

examples/csmsc/tts3/local/synthesize_e2e.sh

@@ -109,6 +109,6 @@ if [ ${stage} -le 4 ] && [ ${stop_stage} -ge 4 ]; then
         --lang=zh \
         --text=${BIN_DIR}/../sentences.txt \
         --output_dir=${train_output_path}/test_e2e \
-        --phones_dict=dump/phone_id_map.txt \
-        --inference_dir=${train_output_path}/inference
+        --phones_dict=dump/phone_id_map.txt #\
+        # --inference_dir=${train_output_path}/inference
 fi

examples/ljspeech/tts3/local/synthesize.sh

@@ -26,7 +26,7 @@ if [ ${stage} -le 0 ] && [ ${stop_stage} -ge 0 ]; then
 fi
 
 # hifigan
-if [ ${stage} -le 0 ] && [ ${stop_stage} -ge 0 ]; then
+if [ ${stage} -le 1 ] && [ ${stop_stage} -ge 1 ]; then
     FLAGS_allocator_strategy=naive_best_fit \
     FLAGS_fraction_of_gpu_memory_to_use=0.01 \
     python3 ${BIN_DIR}/../synthesize.py \

paddlespeech/cli/asr/infer.py

@@ -40,7 +40,6 @@ from paddlespeech.s2t.utils.utility import UpdateConfig
 
 __all__ = ['ASRExecutor']
 
-
 @cli_register(
     name='paddlespeech.asr', description='Speech to text infer command.')
 class ASRExecutor(BaseExecutor):
@@ -125,6 +124,7 @@ class ASRExecutor(BaseExecutor):
         """
         Init model and other resources from a specific path.
         """
+        logger.info("start to init the model")
         if hasattr(self, 'model'):
             logger.info('Model had been initialized.')
             return
@@ -140,14 +140,15 @@ class ASRExecutor(BaseExecutor):
                 res_path,
                 self.pretrained_models[tag]['ckpt_path'] + ".pdparams")
             logger.info(res_path)
-            logger.info(self.cfg_path)
-            logger.info(self.ckpt_path)
+
         else:
             self.cfg_path = os.path.abspath(cfg_path)
             self.ckpt_path = os.path.abspath(ckpt_path + ".pdparams")
             self.res_path = os.path.dirname(
                 os.path.dirname(os.path.abspath(self.cfg_path)))
-
+        logger.info(self.cfg_path)
+        logger.info(self.ckpt_path)
+        
         #Init body.
         self.config = CfgNode(new_allowed=True)
         self.config.merge_from_file(self.cfg_path)
@@ -176,7 +177,6 @@ class ASRExecutor(BaseExecutor):
                     vocab=self.config.vocab_filepath,
                     spm_model_prefix=self.config.spm_model_prefix)
                 self.config.decode.decoding_method = decode_method
-
             else:
                 raise Exception("wrong type")
         model_name = model_type[:model_type.rindex(
@@ -254,12 +254,14 @@ class ASRExecutor(BaseExecutor):
         else:
             raise Exception("wrong type")
 
+        logger.info("audio feat process success")
+
     @paddle.no_grad()
     def infer(self, model_type: str):
         """
         Model inference and result stored in self.output.
         """
-
+        logger.info("start to infer the model to get the output")
         cfg = self.config.decode
         audio = self._inputs["audio"]
         audio_len = self._inputs["audio_len"]
@@ -276,17 +278,22 @@ class ASRExecutor(BaseExecutor):
             self._outputs["result"] = result_transcripts[0]
 
         elif "conformer" in model_type or "transformer" in model_type:
-            result_transcripts = self.model.decode(
-                audio,
-                audio_len,
-                text_feature=self.text_feature,
-                decoding_method=cfg.decoding_method,
-                beam_size=cfg.beam_size,
-                ctc_weight=cfg.ctc_weight,
-                decoding_chunk_size=cfg.decoding_chunk_size,
-                num_decoding_left_chunks=cfg.num_decoding_left_chunks,
-                simulate_streaming=cfg.simulate_streaming)
-            self._outputs["result"] = result_transcripts[0][0]
+            logger.info(f"we will use the transformer like model : {model_type}")
+            try:
+                result_transcripts = self.model.decode(
+                    audio,
+                    audio_len,
+                    text_feature=self.text_feature,
+                    decoding_method=cfg.decoding_method,
+                    beam_size=cfg.beam_size,
+                    ctc_weight=cfg.ctc_weight,
+                    decoding_chunk_size=cfg.decoding_chunk_size,
+                    num_decoding_left_chunks=cfg.num_decoding_left_chunks,
+                    simulate_streaming=cfg.simulate_streaming)
+                self._outputs["result"] = result_transcripts[0][0]
+            except Exception as e:
+                logger.exception(e)
+
         else:
             raise Exception("invalid model name")
 

paddlespeech/cli/asr/pretrained_models.py

@@ -88,6 +88,8 @@ model_alias = {
     "paddlespeech.s2t.models.ds2_online:DeepSpeech2ModelOnline",
     "conformer":
     "paddlespeech.s2t.models.u2:U2Model",
+    "conformer_online":
+    "paddlespeech.s2t.models.u2:U2Model",
     "transformer":
     "paddlespeech.s2t.models.u2:U2Model",
     "wenetspeech":

paddlespeech/s2t/models/u2/u2.py

@@ -279,14 +279,13 @@ class U2BaseModel(ASRInterface, nn.Layer):
             # TODO(Hui Zhang): if end_flag.sum() == running_size:
             if end_flag.cast(paddle.int64).sum() == running_size:
                 break
-
+            
             # 2.1 Forward decoder step
             hyps_mask = subsequent_mask(i).unsqueeze(0).repeat(
                 running_size, 1, 1).to(device)  # (B*N, i, i)
             # logp: (B*N, vocab)
             logp, cache = self.decoder.forward_one_step(
                 encoder_out, encoder_mask, hyps, hyps_mask, cache)
-
             # 2.2 First beam prune: select topk best prob at current time
             top_k_logp, top_k_index = logp.topk(beam_size)  # (B*N, N)
             top_k_logp = mask_finished_scores(top_k_logp, end_flag)
@@ -708,11 +707,11 @@ class U2BaseModel(ASRInterface, nn.Layer):
         batch_size = feats.shape[0]
         if decoding_method in ['ctc_prefix_beam_search',
                                'attention_rescoring'] and batch_size > 1:
-            logger.fatal(
+            logger.error(
                 f'decoding mode {decoding_method} must be running with batch_size == 1'
             )
+            logger.error(f"current batch_size is {batch_size}")
             sys.exit(1)
-
         if decoding_method == 'attention':
             hyps = self.recognize(
                 feats,

paddlespeech/s2t/modules/ctc.py

@@ -180,7 +180,7 @@ class CTCDecoder(CTCDecoderBase):
         # init once
         if self._ext_scorer is not None:
             return
-
+        
         if language_model_path != '':
             logger.info("begin to initialize the external scorer "
                         "for decoding")

paddlespeech/server/README.md

@@ -35,3 +35,16 @@
  ```bash
  paddlespeech_client cls --server_ip 127.0.0.1 --port 8090 --input input.wav
  ```
+
+ ## Online ASR Server
+
+### Lanuch online asr server
+```
+paddlespeech_server start --config_file conf/ws_conformer_application.yaml
+```
+
+### Access online asr server
+
+```
+paddlespeech_client asr_online  --server_ip 127.0.0.1 --port 8090 --input input_16k.wav
+```
\ No newline at end of file

paddlespeech/server/README_cn.md

@@ -35,3 +35,17 @@
  ```bash
  paddlespeech_client cls --server_ip 127.0.0.1 --port 8090 --input input.wav
  ```
+
+## 流式ASR
+
+### 启动流式语音识别服务
+
+```
+paddlespeech_server start --config_file conf/ws_conformer_application.yaml
+```
+
+### 访问流式语音识别服务
+
+```
+paddlespeech_client asr_online  --server_ip 127.0.0.1 --port 8090 --input zh.wav
+```
\ No newline at end of file

paddlespeech/server/bin/paddlespeech_client.py

@@ -277,11 +277,12 @@ class ASRClientExecutor(BaseExecutor):
                 lang=lang,
                 audio_format=audio_format)
             time_end = time.time()
-            logger.info(res.json())
+            logger.info(res)
             logger.info("Response time %f s." % (time_end - time_start))
             return True
         except Exception as e:
             logger.error("Failed to speech recognition.")
+            logger.error(e)
             return False
 
     @stats_wrapper
@@ -299,9 +300,10 @@ class ASRClientExecutor(BaseExecutor):
         logging.info("asr websocket client start")
         handler = ASRAudioHandler(server_ip, port)
         loop = asyncio.get_event_loop()
-        loop.run_until_complete(handler.run(input))
+        res = loop.run_until_complete(handler.run(input))
         logging.info("asr websocket client finished")
 
+        return res['asr_results']
 
 @cli_client_register(
     name='paddlespeech_client.cls', description='visit cls service')

paddlespeech/server/conf/ws_application.yaml

@@ -41,11 +41,7 @@ asr_online:
         shift_ms: 40
         sample_rate: 16000
         sample_width: 2
-
-    vad_conf:
-        aggressiveness: 2
-        sample_rate: 16000
-        frame_duration_ms: 20
-        sample_width: 2
-        padding_ms: 200
-        padding_ratio: 0.9
+        window_n: 7     # frame
+        shift_n: 4      # frame
+        window_ms: 20   # ms
+        shift_ms: 10    # ms

paddlespeech/server/conf/ws_conformer_application.yaml

+# This is the parameter configuration file for PaddleSpeech Serving.
+
+#################################################################################
+#                             SERVER SETTING                                    #
+#################################################################################
+host: 0.0.0.0
+port: 8090
+
+# The task format in the engin_list is: <speech task>_<engine type>
+# task choices = ['asr_online', 'tts_online']
+# protocol = ['websocket', 'http'] (only one can be selected).
+# websocket only support online engine type.
+protocol: 'websocket'
+engine_list: ['asr_online']
+
+
+#################################################################################
+#                                ENGINE CONFIG                                  #
+#################################################################################
+
+################################### ASR #########################################
+################### speech task: asr; engine_type: online #######################
+asr_online:
+    model_type: 'conformer_online_multicn'
+    am_model: # the pdmodel file of am static model [optional]
+    am_params:  # the pdiparams file of am static model [optional]
+    lang: 'zh'
+    sample_rate: 16000
+    cfg_path: 
+    decode_method: 
+    force_yes: True
+
+    am_predictor_conf:
+        device:  # set 'gpu:id' or 'cpu'
+        switch_ir_optim: True
+        glog_info: False  # True -> print glog
+        summary: True  # False -> do not show predictor config
+
+    chunk_buffer_conf:
+        window_n: 7     # frame
+        shift_n: 4      # frame
+        window_ms: 25   # ms
+        shift_ms: 10    # ms
+        sample_rate: 16000
+        sample_width: 2
\ No newline at end of file

paddlespeech/server/engine/asr/online/ctc_search.py

+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from collections import defaultdict
+import paddle
+from paddlespeech.cli.log import logger
+from paddlespeech.s2t.utils.utility import log_add
+
+__all__ = ['CTCPrefixBeamSearch']
+
+
+class CTCPrefixBeamSearch:
+    def __init__(self, config):
+        """Implement the ctc prefix beam search
+
+        Args:
+            config (yacs.config.CfgNode): _description_
+        """
+        self.config = config
+        self.reset()
+
+    @paddle.no_grad()
+    def search(self, ctc_probs, device, blank_id=0):
+        """ctc prefix beam search method decode a chunk feature
+
+        Args:
+            xs (paddle.Tensor): feature data
+            ctc_probs (paddle.Tensor): the ctc probability of all the tokens
+            device (paddle.fluid.core_avx.Place): the feature host device, such as CUDAPlace(0).
+            blank_id (int, optional): the blank id in the vocab. Defaults to 0.
+
+        Returns:
+            list: the search result
+        """
+        # decode 
+        logger.info("start to ctc prefix search")
+
+        batch_size = 1
+        beam_size = self.config.beam_size
+        maxlen = ctc_probs.shape[0]
+
+        assert len(ctc_probs.shape) == 2
+
+        # cur_hyps: (prefix, (blank_ending_score, none_blank_ending_score))
+        # blank_ending_score and  none_blank_ending_score in ln domain
+        if self.cur_hyps is None:
+            self.cur_hyps = [(tuple(), (0.0, -float('inf')))]
+        # 2. CTC beam search step by step
+        for t in range(0, maxlen):
+            logp = ctc_probs[t]  # (vocab_size,)
+            # key: prefix, value (pb, pnb), default value(-inf, -inf)
+            next_hyps = defaultdict(lambda: (-float('inf'), -float('inf')))
+
+            # 2.1 First beam prune: select topk best
+            #     do token passing process
+            top_k_logp, top_k_index = logp.topk(beam_size)  # (beam_size,)
+            for s in top_k_index:
+                s = s.item()
+                ps = logp[s].item()
+                for prefix, (pb, pnb) in self.cur_hyps:
+                    last = prefix[-1] if len(prefix) > 0 else None
+                    if s == blank_id:  # blank
+                        n_pb, n_pnb = next_hyps[prefix]
+                        n_pb = log_add([n_pb, pb + ps, pnb + ps])
+                        next_hyps[prefix] = (n_pb, n_pnb)
+                    elif s == last:
+                        #  Update *ss -> *s;
+                        n_pb, n_pnb = next_hyps[prefix]
+                        n_pnb = log_add([n_pnb, pnb + ps])
+                        next_hyps[prefix] = (n_pb, n_pnb)
+                        # Update *s-s -> *ss, - is for blank
+                        n_prefix = prefix + (s, )
+                        n_pb, n_pnb = next_hyps[n_prefix]
+                        n_pnb = log_add([n_pnb, pb + ps])
+                        next_hyps[n_prefix] = (n_pb, n_pnb)
+                    else:
+                        n_prefix = prefix + (s, )
+                        n_pb, n_pnb = next_hyps[n_prefix]
+                        n_pnb = log_add([n_pnb, pb + ps, pnb + ps])
+                        next_hyps[n_prefix] = (n_pb, n_pnb)
+
+            # 2.2 Second beam prune
+            next_hyps = sorted(
+                next_hyps.items(),
+                key=lambda x: log_add(list(x[1])),
+                reverse=True)
+            self.cur_hyps = next_hyps[:beam_size]
+
+        self.hyps = [(y[0], log_add([y[1][0], y[1][1]])) for y in self.cur_hyps]
+        logger.info("ctc prefix search success")
+        return self.hyps
+
+    def get_one_best_hyps(self):
+        """Return the one best result
+
+        Returns:
+            list: the one best result
+        """
+        return [self.hyps[0][0]]
+
+    def get_hyps(self):
+        """Return the search hyps
+
+        Returns:
+            list: return the search hyps
+        """
+        return self.hyps
+
+    def reset(self):
+        """Rest the search cache value
+        """
+        self.cur_hyps = None
+        self.hyps = None
+
+    def finalize_search(self):
+        """do nothing in ctc_prefix_beam_search
+        """
+        pass

paddlespeech/server/tests/__init__.py

+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.

paddlespeech/server/tests/asr/__init__.py

+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.

paddlespeech/server/tests/asr/offline/__init__.py

+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.

paddlespeech/server/tests/asr/online/__init__.py

+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.

paddlespeech/server/tests/asr/online/websocket_client.py

@@ -34,10 +34,9 @@ class ASRAudioHandler:
     def read_wave(self, wavfile_path: str):
         samples, sample_rate = soundfile.read(wavfile_path, dtype='int16')
         x_len = len(samples)
-        # chunk_stride = 40 * 16  #40ms, sample_rate = 16kHz
-        chunk_size = 80 * 16  #80ms, sample_rate = 16kHz
 
-        if x_len % chunk_size != 0:
+        chunk_size = 85 * 16  #80ms, sample_rate = 16kHz
+        if x_len % chunk_size!= 0:
             padding_len_x = chunk_size - x_len % chunk_size
         else:
             padding_len_x = 0
@@ -48,7 +47,6 @@ class ASRAudioHandler:
         assert (x_len + padding_len_x) % chunk_size == 0
         num_chunk = (x_len + padding_len_x) / chunk_size
         num_chunk = int(num_chunk)
-
         for i in range(0, num_chunk):
             start = i * chunk_size
             end = start + chunk_size
@@ -57,7 +55,11 @@ class ASRAudioHandler:
 
     async def run(self, wavfile_path: str):
         logging.info("send a message to the server")
+        # self.read_wave()
+        # send websocket handshake protocal
         async with websockets.connect(self.url) as ws:
+            # server has already received handshake protocal
+            # client start to send the command
             audio_info = json.dumps(
                 {
                     "name": "test.wav",
@@ -78,7 +80,6 @@ class ASRAudioHandler:
                 msg = json.loads(msg)
                 logging.info("receive msg={}".format(msg))
 
-            result = msg
             # finished 
             audio_info = json.dumps(
                 {
@@ -91,10 +92,12 @@ class ASRAudioHandler:
                 separators=(',', ': '))
             await ws.send(audio_info)
             msg = await ws.recv()
+            
+            # decode the bytes to str
             msg = json.loads(msg)
-            logging.info("receive msg={}".format(msg))
-
-        return result
+            logging.info("final receive msg={}".format(msg))
+            result = msg
+            return result
 
 
 def main(args):

paddlespeech/server/utils/buffer.py

@@ -63,12 +63,12 @@ class ChunkBuffer(object):
         the sample rate.
         Yields Frames of the requested duration.
         """
+
         audio = self.remained_audio + audio
         self.remained_audio = b''
 
         offset = 0
         timestamp = 0.0
-
         while offset + self.window_bytes <= len(audio):
             yield Frame(audio[offset:offset + self.window_bytes], timestamp,
                         self.window_sec)

paddlespeech/server/utils/util.py

@@ -52,6 +52,10 @@ def get_chunks(data, block_size, pad_size, step):
     Returns:
         list: chunks list
     """
+
+    if block_size == -1:
+        return [data]
+
     if step == "am":
         data_len = data.shape[1]
     elif step == "voc":

paddlespeech/server/ws/asr_socket.py

@@ -13,12 +13,12 @@
 # limitations under the License.
 import json
 
-import numpy as np
 from fastapi import APIRouter
 from fastapi import WebSocket
 from fastapi import WebSocketDisconnect
 from starlette.websockets import WebSocketState as WebSocketState
 
+from paddlespeech.server.engine.asr.online.asr_engine import PaddleASRConnectionHanddler
 from paddlespeech.server.engine.engine_pool import get_engine_pool
 from paddlespeech.server.utils.buffer import ChunkBuffer
 from paddlespeech.server.utils.vad import VADAudio
@@ -28,26 +28,29 @@ router = APIRouter()
 
 @router.websocket('/ws/asr')
 async def websocket_endpoint(websocket: WebSocket):
-
     await websocket.accept()
 
     engine_pool = get_engine_pool()
     asr_engine = engine_pool['asr']
+    connection_handler = None
     # init buffer
+    # each websocekt connection has its own chunk buffer
     chunk_buffer_conf = asr_engine.config.chunk_buffer_conf
     chunk_buffer = ChunkBuffer(
-        window_n=7,
-        shift_n=4,
-        window_ms=20,
-        shift_ms=10,
-        sample_rate=chunk_buffer_conf['sample_rate'],
-        sample_width=chunk_buffer_conf['sample_width'])
+        window_n=chunk_buffer_conf.window_n,
+        shift_n=chunk_buffer_conf.shift_n,
+        window_ms=chunk_buffer_conf.window_ms,
+        shift_ms=chunk_buffer_conf.shift_ms,
+        sample_rate=chunk_buffer_conf.sample_rate,
+        sample_width=chunk_buffer_conf.sample_width)
+
     # init vad
-    vad_conf = asr_engine.config.vad_conf
-    vad = VADAudio(
-        aggressiveness=vad_conf['aggressiveness'],
-        rate=vad_conf['sample_rate'],
-        frame_duration_ms=vad_conf['frame_duration_ms'])
+    vad_conf = asr_engine.config.get('vad_conf', None)
+    if vad_conf:
+        vad = VADAudio(
+            aggressiveness=vad_conf['aggressiveness'],
+            rate=vad_conf['sample_rate'],
+            frame_duration_ms=vad_conf['frame_duration_ms'])
 
     try:
         while True:
@@ -64,13 +67,21 @@ async def websocket_endpoint(websocket: WebSocket):
                 if message['signal'] == 'start':
                     resp = {"status": "ok", "signal": "server_ready"}
                     # do something at begining here
+                    # create the instance to process the audio
+                    connection_handler = PaddleASRConnectionHanddler(asr_engine)
                     await websocket.send_json(resp)
                 elif message['signal'] == 'end':
-                    engine_pool = get_engine_pool()
-                    asr_engine = engine_pool['asr']
                     # reset single  engine for an new connection
-                    asr_engine.reset()
-                    resp = {"status": "ok", "signal": "finished"}
+                    connection_handler.decode(is_finished=True)
+                    connection_handler.rescoring()
+                    asr_results = connection_handler.get_result()
+                    connection_handler.reset()
+
+                    resp = {
+                        "status": "ok",
+                        "signal": "finished",
+                        'asr_results': asr_results
+                    }
                     await websocket.send_json(resp)
                     break
                 else:
@@ -79,21 +90,11 @@ async def websocket_endpoint(websocket: WebSocket):
             elif "bytes" in message:
                 message = message["bytes"]
 
-                engine_pool = get_engine_pool()
-                asr_engine = engine_pool['asr']
-                asr_results = ""
-                frames = chunk_buffer.frame_generator(message)
-                for frame in frames:
-                    samples = np.frombuffer(frame.bytes, dtype=np.int16)
-                    sample_rate = asr_engine.config.sample_rate
-                    x_chunk, x_chunk_lens = asr_engine.preprocess(samples,
-                                                                  sample_rate)
-                    asr_engine.run(x_chunk, x_chunk_lens)
-                    asr_results = asr_engine.postprocess()
+                connection_handler.extract_feat(message)
+                connection_handler.decode(is_finished=False)
+                asr_results = connection_handler.get_result()
 
-                asr_results = asr_engine.postprocess()
                 resp = {'asr_results': asr_results}
-
                 await websocket.send_json(resp)
     except WebSocketDisconnect:
         pass

paddlespeech/t2s/exps/inference.py

@@ -14,6 +14,7 @@
 import argparse
 from pathlib import Path
 
+import paddle
 import soundfile as sf
 from timer import timer
 
@@ -101,21 +102,35 @@ def parse_args():
 # only inference for models trained with csmsc now
 def main():
     args = parse_args()
+
+    paddle.set_device(args.device)
+
     # frontend
-    frontend = get_frontend(args)
+    frontend = get_frontend(
+        lang=args.lang,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict)
 
     # am_predictor
-    am_predictor = get_predictor(args, filed='am')
+    am_predictor = get_predictor(
+        model_dir=args.inference_dir,
+        model_file=args.am + ".pdmodel",
+        params_file=args.am + ".pdiparams",
+        device=args.device)
     # model: {model_name}_{dataset}
     am_dataset = args.am[args.am.rindex('_') + 1:]
 
     # voc_predictor
-    voc_predictor = get_predictor(args, filed='voc')
+    voc_predictor = get_predictor(
+        model_dir=args.inference_dir,
+        model_file=args.voc + ".pdmodel",
+        params_file=args.voc + ".pdiparams",
+        device=args.device)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)
 
-    sentences = get_sentences(args)
+    sentences = get_sentences(text_file=args.text, lang=args.lang)
 
     merge_sentences = True
     fs = 24000 if am_dataset != 'ljspeech' else 22050
@@ -123,11 +138,13 @@ def main():
     for utt_id, sentence in sentences[:3]:
         with timer() as t:
             am_output_data = get_am_output(
-                args,
+                input=sentence,
                 am_predictor=am_predictor,
+                am=args.am,
                 frontend=frontend,
+                lang=args.lang,
                 merge_sentences=merge_sentences,
-                input=sentence)
+                speaker_dict=args.speaker_dict, )
             wav = get_voc_output(
                 voc_predictor=voc_predictor, input=am_output_data)
         speed = wav.size / t.elapse
@@ -143,11 +160,13 @@ def main():
     for utt_id, sentence in sentences:
         with timer() as t:
             am_output_data = get_am_output(
-                args,
+                input=sentence,
                 am_predictor=am_predictor,
+                am=args.am,
                 frontend=frontend,
+                lang=args.lang,
                 merge_sentences=merge_sentences,
-                input=sentence)
+                speaker_dict=args.speaker_dict, )
             wav = get_voc_output(
                 voc_predictor=voc_predictor, input=am_output_data)
 

paddlespeech/t2s/exps/inference_streaming.py

@@ -15,6 +15,7 @@ import argparse
 from pathlib import Path
 
 import numpy as np
+import paddle
 import soundfile as sf
 from timer import timer
 
@@ -25,7 +26,6 @@ from paddlespeech.t2s.exps.syn_utils import get_frontend
 from paddlespeech.t2s.exps.syn_utils import get_predictor
 from paddlespeech.t2s.exps.syn_utils import get_sentences
 from paddlespeech.t2s.exps.syn_utils import get_streaming_am_output
-from paddlespeech.t2s.exps.syn_utils import get_streaming_am_predictor
 from paddlespeech.t2s.exps.syn_utils import get_voc_output
 from paddlespeech.t2s.utils import str2bool
 
@@ -101,23 +101,47 @@ def parse_args():
 # only inference for models trained with csmsc now
 def main():
     args = parse_args()
+
+    paddle.set_device(args.device)
+
     # frontend
-    frontend = get_frontend(args)
+    frontend = get_frontend(
+        lang=args.lang,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict)
 
     # am_predictor
-    am_encoder_infer_predictor, am_decoder_predictor, am_postnet_predictor = get_streaming_am_predictor(
-        args)
+
+    am_encoder_infer_predictor = get_predictor(
+        model_dir=args.inference_dir,
+        model_file=args.am + "_am_encoder_infer" + ".pdmodel",
+        params_file=args.am + "_am_encoder_infer" + ".pdiparams",
+        device=args.device)
+    am_decoder_predictor = get_predictor(
+        model_dir=args.inference_dir,
+        model_file=args.am + "_am_decoder" + ".pdmodel",
+        params_file=args.am + "_am_decoder" + ".pdiparams",
+        device=args.device)
+    am_postnet_predictor = get_predictor(
+        model_dir=args.inference_dir,
+        model_file=args.am + "_am_postnet" + ".pdmodel",
+        params_file=args.am + "_am_postnet" + ".pdiparams",
+        device=args.device)
     am_mu, am_std = np.load(args.am_stat)
     # model: {model_name}_{dataset}
     am_dataset = args.am[args.am.rindex('_') + 1:]
 
     # voc_predictor
-    voc_predictor = get_predictor(args, filed='voc')
+    voc_predictor = get_predictor(
+        model_dir=args.inference_dir,
+        model_file=args.voc + ".pdmodel",
+        params_file=args.voc + ".pdiparams",
+        device=args.device)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)
 
-    sentences = get_sentences(args)
+    sentences = get_sentences(text_file=args.text, lang=args.lang)
 
     merge_sentences = True
 
@@ -126,13 +150,13 @@ def main():
     for utt_id, sentence in sentences[:3]:
         with timer() as t:
             normalized_mel = get_streaming_am_output(
-                args,
+                input=sentence,
                 am_encoder_infer_predictor=am_encoder_infer_predictor,
                 am_decoder_predictor=am_decoder_predictor,
                 am_postnet_predictor=am_postnet_predictor,
                 frontend=frontend,
-                merge_sentences=merge_sentences,
-                input=sentence)
+                lang=args.lang,
+                merge_sentences=merge_sentences, )
             mel = denorm(normalized_mel, am_mu, am_std)
             wav = get_voc_output(voc_predictor=voc_predictor, input=mel)
         speed = wav.size / t.elapse

paddlespeech/t2s/exps/ort_predict.py

@@ -16,6 +16,7 @@ from pathlib import Path
 
 import jsonlines
 import numpy as np
+import paddle
 import soundfile as sf
 from timer import timer
 
@@ -25,12 +26,13 @@ from paddlespeech.t2s.utils import str2bool
 
 
 def ort_predict(args):
+
     # construct dataset for evaluation
     with jsonlines.open(args.test_metadata, 'r') as reader:
         test_metadata = list(reader)
     am_name = args.am[:args.am.rindex('_')]
     am_dataset = args.am[args.am.rindex('_') + 1:]
-    test_dataset = get_test_dataset(args, test_metadata, am_name, am_dataset)
+    test_dataset = get_test_dataset(test_metadata=test_metadata, am=args.am)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)
@@ -38,10 +40,18 @@ def ort_predict(args):
     fs = 24000 if am_dataset != 'ljspeech' else 22050
 
     # am
-    am_sess = get_sess(args, filed='am')
+    am_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.am + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
 
     # vocoder
-    voc_sess = get_sess(args, filed='voc')
+    voc_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.voc + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
 
     # am warmup
     for T in [27, 38, 54]:
@@ -135,6 +145,8 @@ def parse_args():
 def main():
     args = parse_args()
 
+    paddle.set_device(args.device)
+
     ort_predict(args)
 
 

paddlespeech/t2s/exps/ort_predict_e2e.py

@@ -15,6 +15,7 @@ import argparse
 from pathlib import Path
 
 import numpy as np
+import paddle
 import soundfile as sf
 from timer import timer
 
@@ -27,21 +28,31 @@ from paddlespeech.t2s.utils import str2bool
 def ort_predict(args):
 
     # frontend
-    frontend = get_frontend(args)
+    frontend = get_frontend(
+        lang=args.lang,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)
-    sentences = get_sentences(args)
+    sentences = get_sentences(text_file=args.text, lang=args.lang)
 
     am_name = args.am[:args.am.rindex('_')]
     am_dataset = args.am[args.am.rindex('_') + 1:]
     fs = 24000 if am_dataset != 'ljspeech' else 22050
 
-    # am
-    am_sess = get_sess(args, filed='am')
+    am_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.am + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
 
     # vocoder
-    voc_sess = get_sess(args, filed='voc')
+    voc_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.voc + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
 
     # frontend warmup
     # Loading model cost 0.5+ seconds
@@ -168,6 +179,8 @@ def parse_args():
 def main():
     args = parse_args()
 
+    paddle.set_device(args.device)
+
     ort_predict(args)
 
 

paddlespeech/t2s/exps/ort_predict_streaming.py

@@ -15,6 +15,7 @@ import argparse
 from pathlib import Path
 
 import numpy as np
+import paddle
 import soundfile as sf
 from timer import timer
 
@@ -23,30 +24,50 @@ from paddlespeech.t2s.exps.syn_utils import get_chunks
 from paddlespeech.t2s.exps.syn_utils import get_frontend
 from paddlespeech.t2s.exps.syn_utils import get_sentences
 from paddlespeech.t2s.exps.syn_utils import get_sess
-from paddlespeech.t2s.exps.syn_utils import get_streaming_am_sess
 from paddlespeech.t2s.utils import str2bool
 
 
 def ort_predict(args):
 
     # frontend
-    frontend = get_frontend(args)
+    frontend = get_frontend(
+        lang=args.lang,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)
-    sentences = get_sentences(args)
+    sentences = get_sentences(text_file=args.text, lang=args.lang)
 
     am_name = args.am[:args.am.rindex('_')]
     am_dataset = args.am[args.am.rindex('_') + 1:]
     fs = 24000 if am_dataset != 'ljspeech' else 22050
 
-    # am
-    am_encoder_infer_sess, am_decoder_sess, am_postnet_sess = get_streaming_am_sess(
-        args)
+    # streaming acoustic model
+    am_encoder_infer_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.am + "_am_encoder_infer" + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
+    am_decoder_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.am + "_am_decoder" + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
+
+    am_postnet_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.am + "_am_postnet" + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
     am_mu, am_std = np.load(args.am_stat)
 
     # vocoder
-    voc_sess = get_sess(args, filed='voc')
+    voc_sess = get_sess(
+        model_dir=args.inference_dir,
+        model_file=args.voc + ".onnx",
+        device=args.device,
+        cpu_threads=args.cpu_threads)
 
     # frontend warmup
     # Loading model cost 0.5+ seconds
@@ -226,6 +247,8 @@ def parse_args():
 def main():
     args = parse_args()
 
+    paddle.set_device(args.device)
+
     ort_predict(args)
 
 

paddlespeech/t2s/exps/syn_utils.py

@@ -14,6 +14,10 @@
 import math
 import os
 from pathlib import Path
+from typing import Any
+from typing import Dict
+from typing import List
+from typing import Optional
 
 import numpy as np
 import onnxruntime as ort
@@ -21,6 +25,7 @@ import paddle
 from paddle import inference
 from paddle import jit
 from paddle.static import InputSpec
+from yacs.config import CfgNode
 
 from paddlespeech.s2t.utils.dynamic_import import dynamic_import
 from paddlespeech.t2s.datasets.data_table import DataTable
@@ -70,7 +75,7 @@ def denorm(data, mean, std):
     return data * std + mean
 
 
-def get_chunks(data, chunk_size, pad_size):
+def get_chunks(data, chunk_size: int, pad_size: int):
     data_len = data.shape[1]
     chunks = []
     n = math.ceil(data_len / chunk_size)
@@ -82,28 +87,34 @@ def get_chunks(data, chunk_size, pad_size):
 
 
 # input
-def get_sentences(args):
+def get_sentences(text_file: Optional[os.PathLike], lang: str='zh'):
     # construct dataset for evaluation
     sentences = []
-    with open(args.text, 'rt') as f:
+    with open(text_file, 'rt') as f:
         for line in f:
             items = line.strip().split()
             utt_id = items[0]
-            if 'lang' in args and args.lang == 'zh':
+            if lang == 'zh':
                 sentence = "".join(items[1:])
-            elif 'lang' in args and args.lang == 'en':
+            elif lang == 'en':
                 sentence = " ".join(items[1:])
             sentences.append((utt_id, sentence))
     return sentences
 
 
-def get_test_dataset(args, test_metadata, am_name, am_dataset):
+def get_test_dataset(test_metadata: List[Dict[str, Any]],
+                     am: str,
+                     speaker_dict: Optional[os.PathLike]=None,
+                     voice_cloning: bool=False):
+    # model: {model_name}_{dataset}
+    am_name = am[:am.rindex('_')]
+    am_dataset = am[am.rindex('_') + 1:]
     if am_name == 'fastspeech2':
         fields = ["utt_id", "text"]
-        if am_dataset in {"aishell3", "vctk"} and args.speaker_dict:
+        if am_dataset in {"aishell3", "vctk"} and speaker_dict is not None:
             print("multiple speaker fastspeech2!")
             fields += ["spk_id"]
-        elif 'voice_cloning' in args and args.voice_cloning:
+        elif voice_cloning:
             print("voice cloning!")
             fields += ["spk_emb"]
         else:
@@ -112,7 +123,7 @@ def get_test_dataset(args, test_metadata, am_name, am_dataset):
         fields = ["utt_id", "phones", "tones"]
     elif am_name == 'tacotron2':
         fields = ["utt_id", "text"]
-        if 'voice_cloning' in args and args.voice_cloning:
+        if voice_cloning:
             print("voice cloning!")
             fields += ["spk_emb"]
 
@@ -121,12 +132,14 @@ def get_test_dataset(args, test_metadata, am_name, am_dataset):
 
 
 # frontend
-def get_frontend(args):
-    if 'lang' in args and args.lang == 'zh':
+def get_frontend(lang: str='zh',
+                 phones_dict: Optional[os.PathLike]=None,
+                 tones_dict: Optional[os.PathLike]=None):
+    if lang == 'zh':
         frontend = Frontend(
-            phone_vocab_path=args.phones_dict, tone_vocab_path=args.tones_dict)
-    elif 'lang' in args and args.lang == 'en':
-        frontend = English(phone_vocab_path=args.phones_dict)
+            phone_vocab_path=phones_dict, tone_vocab_path=tones_dict)
+    elif lang == 'en':
+        frontend = English(phone_vocab_path=phones_dict)
     else:
         print("wrong lang!")
     print("frontend done!")
@@ -134,30 +147,37 @@ def get_frontend(args):
 
 
 # dygraph
-def get_am_inference(args, am_config):
-    with open(args.phones_dict, "r") as f:
+def get_am_inference(
+        am: str='fastspeech2_csmsc',
+        am_config: CfgNode=None,
+        am_ckpt: Optional[os.PathLike]=None,
+        am_stat: Optional[os.PathLike]=None,
+        phones_dict: Optional[os.PathLike]=None,
+        tones_dict: Optional[os.PathLike]=None,
+        speaker_dict: Optional[os.PathLike]=None, ):
+    with open(phones_dict, "r") as f:
         phn_id = [line.strip().split() for line in f.readlines()]
     vocab_size = len(phn_id)
     print("vocab_size:", vocab_size)
 
     tone_size = None
-    if 'tones_dict' in args and args.tones_dict:
-        with open(args.tones_dict, "r") as f:
+    if tones_dict is not None:
+        with open(tones_dict, "r") as f:
             tone_id = [line.strip().split() for line in f.readlines()]
         tone_size = len(tone_id)
         print("tone_size:", tone_size)
 
     spk_num = None
-    if 'speaker_dict' in args and args.speaker_dict:
-        with open(args.speaker_dict, 'rt') as f:
+    if speaker_dict is not None:
+        with open(speaker_dict, 'rt') as f:
             spk_id = [line.strip().split() for line in f.readlines()]
         spk_num = len(spk_id)
         print("spk_num:", spk_num)
 
     odim = am_config.n_mels
     # model: {model_name}_{dataset}
-    am_name = args.am[:args.am.rindex('_')]
-    am_dataset = args.am[args.am.rindex('_') + 1:]
+    am_name = am[:am.rindex('_')]
+    am_dataset = am[am.rindex('_') + 1:]
 
     am_class = dynamic_import(am_name, model_alias)
     am_inference_class = dynamic_import(am_name + '_inference', model_alias)
@@ -174,34 +194,38 @@ def get_am_inference(args, am_config):
     elif am_name == 'tacotron2':
         am = am_class(idim=vocab_size, odim=odim, **am_config["model"])
 
-    am.set_state_dict(paddle.load(args.am_ckpt)["main_params"])
+    am.set_state_dict(paddle.load(am_ckpt)["main_params"])
     am.eval()
-    am_mu, am_std = np.load(args.am_stat)
+    am_mu, am_std = np.load(am_stat)
     am_mu = paddle.to_tensor(am_mu)
     am_std = paddle.to_tensor(am_std)
     am_normalizer = ZScore(am_mu, am_std)
     am_inference = am_inference_class(am_normalizer, am)
     am_inference.eval()
     print("acoustic model done!")
-    return am_inference, am_name, am_dataset
+    return am_inference
 
 
-def get_voc_inference(args, voc_config):
+def get_voc_inference(
+        voc: str='pwgan_csmsc',
+        voc_config: Optional[os.PathLike]=None,
+        voc_ckpt: Optional[os.PathLike]=None,
+        voc_stat: Optional[os.PathLike]=None, ):
     # model: {model_name}_{dataset}
-    voc_name = args.voc[:args.voc.rindex('_')]
+    voc_name = voc[:voc.rindex('_')]
     voc_class = dynamic_import(voc_name, model_alias)
     voc_inference_class = dynamic_import(voc_name + '_inference', model_alias)
     if voc_name != 'wavernn':
         voc = voc_class(**voc_config["generator_params"])
-        voc.set_state_dict(paddle.load(args.voc_ckpt)["generator_params"])
+        voc.set_state_dict(paddle.load(voc_ckpt)["generator_params"])
         voc.remove_weight_norm()
         voc.eval()
     else:
         voc = voc_class(**voc_config["model"])
-        voc.set_state_dict(paddle.load(args.voc_ckpt)["main_params"])
+        voc.set_state_dict(paddle.load(voc_ckpt)["main_params"])
         voc.eval()
 
-    voc_mu, voc_std = np.load(args.voc_stat)
+    voc_mu, voc_std = np.load(voc_stat)
     voc_mu = paddle.to_tensor(voc_mu)
     voc_std = paddle.to_tensor(voc_std)
     voc_normalizer = ZScore(voc_mu, voc_std)
@@ -211,10 +235,16 @@ def get_voc_inference(args, voc_config):
     return voc_inference
 
 
-# to static
-def am_to_static(args, am_inference, am_name, am_dataset):
+# dygraph to static graph
+def am_to_static(am_inference,
+                 am: str='fastspeech2_csmsc',
+                 inference_dir=Optional[os.PathLike],
+                 speaker_dict: Optional[os.PathLike]=None):
+    # model: {model_name}_{dataset}
+    am_name = am[:am.rindex('_')]
+    am_dataset = am[am.rindex('_') + 1:]
     if am_name == 'fastspeech2':
-        if am_dataset in {"aishell3", "vctk"} and args.speaker_dict:
+        if am_dataset in {"aishell3", "vctk"} and speaker_dict is not None:
             am_inference = jit.to_static(
                 am_inference,
                 input_spec=[
@@ -226,7 +256,7 @@ def am_to_static(args, am_inference, am_name, am_dataset):
                 am_inference, input_spec=[InputSpec([-1], dtype=paddle.int64)])
 
     elif am_name == 'speedyspeech':
-        if am_dataset in {"aishell3", "vctk"} and args.speaker_dict:
+        if am_dataset in {"aishell3", "vctk"} and speaker_dict is not None:
             am_inference = jit.to_static(
                 am_inference,
                 input_spec=[
@@ -247,56 +277,64 @@ def am_to_static(args, am_inference, am_name, am_dataset):
         am_inference = jit.to_static(
             am_inference, input_spec=[InputSpec([-1], dtype=paddle.int64)])
 
-    paddle.jit.save(am_inference, os.path.join(args.inference_dir, args.am))
-    am_inference = paddle.jit.load(os.path.join(args.inference_dir, args.am))
+    paddle.jit.save(am_inference, os.path.join(inference_dir, am))
+    am_inference = paddle.jit.load(os.path.join(inference_dir, am))
     return am_inference
 
 
-def voc_to_static(args, voc_inference):
+def voc_to_static(voc_inference,
+                  voc: str='pwgan_csmsc',
+                  inference_dir=Optional[os.PathLike]):
     voc_inference = jit.to_static(
         voc_inference, input_spec=[
             InputSpec([-1, 80], dtype=paddle.float32),
         ])
-    paddle.jit.save(voc_inference, os.path.join(args.inference_dir, args.voc))
-    voc_inference = paddle.jit.load(os.path.join(args.inference_dir, args.voc))
+    paddle.jit.save(voc_inference, os.path.join(inference_dir, voc))
+    voc_inference = paddle.jit.load(os.path.join(inference_dir, voc))
     return voc_inference
 
 
 # inference
-def get_predictor(args, filed='am'):
-    full_name = ''
-    if filed == 'am':
-        full_name = args.am
-    elif filed == 'voc':
-        full_name = args.voc
+def get_predictor(model_dir: Optional[os.PathLike]=None,
+                  model_file: Optional[os.PathLike]=None,
+                  params_file: Optional[os.PathLike]=None,
+                  device: str='cpu'):
+
     config = inference.Config(
-        str(Path(args.inference_dir) / (full_name + ".pdmodel")),
-        str(Path(args.inference_dir) / (full_name + ".pdiparams")))
-    if args.device == "gpu":
+        str(Path(model_dir) / model_file), str(Path(model_dir) / params_file))
+    if device == "gpu":
         config.enable_use_gpu(100, 0)
-    elif args.device == "cpu":
+    elif device == "cpu":
         config.disable_gpu()
     config.enable_memory_optim()
     predictor = inference.create_predictor(config)
     return predictor
 
 
-def get_am_output(args, am_predictor, frontend, merge_sentences, input):
-    am_name = args.am[:args.am.rindex('_')]
-    am_dataset = args.am[args.am.rindex('_') + 1:]
+def get_am_output(
+        input: str,
+        am_predictor,
+        am,
+        frontend,
+        lang: str='zh',
+        merge_sentences: bool=True,
+        speaker_dict: Optional[os.PathLike]=None,
+        spk_id: int=0, ):
+    am_name = am[:am.rindex('_')]
+    am_dataset = am[am.rindex('_') + 1:]
     am_input_names = am_predictor.get_input_names()
     get_tone_ids = False
     get_spk_id = False
     if am_name == 'speedyspeech':
         get_tone_ids = True
-    if am_dataset in {"aishell3", "vctk"} and args.speaker_dict:
+    if am_dataset in {"aishell3", "vctk"} and speaker_dict:
         get_spk_id = True
-        spk_id = np.array([args.spk_id])
-    if args.lang == 'zh':
+        spk_id = np.array([spk_id])
+    if lang == 'zh':
         input_ids = frontend.get_input_ids(
             input, merge_sentences=merge_sentences, get_tone_ids=get_tone_ids)
         phone_ids = input_ids["phone_ids"]
-    elif args.lang == 'en':
+    elif lang == 'en':
         input_ids = frontend.get_input_ids(
             input, merge_sentences=merge_sentences)
         phone_ids = input_ids["phone_ids"]
@@ -338,50 +376,6 @@ def get_voc_output(voc_predictor, input):
     return wav
 
 
-# streaming am
-def get_streaming_am_predictor(args):
-    full_name = args.am
-    am_encoder_infer_config = inference.Config(
-        str(
-            Path(args.inference_dir) /
-            (full_name + "_am_encoder_infer" + ".pdmodel")),
-        str(
-            Path(args.inference_dir) /
-            (full_name + "_am_encoder_infer" + ".pdiparams")))
-    am_decoder_config = inference.Config(
-        str(
-            Path(args.inference_dir) /
-            (full_name + "_am_decoder" + ".pdmodel")),
-        str(
-            Path(args.inference_dir) /
-            (full_name + "_am_decoder" + ".pdiparams")))
-    am_postnet_config = inference.Config(
-        str(
-            Path(args.inference_dir) /
-            (full_name + "_am_postnet" + ".pdmodel")),
-        str(
-            Path(args.inference_dir) /
-            (full_name + "_am_postnet" + ".pdiparams")))
-    if args.device == "gpu":
-        am_encoder_infer_config.enable_use_gpu(100, 0)
-        am_decoder_config.enable_use_gpu(100, 0)
-        am_postnet_config.enable_use_gpu(100, 0)
-    elif args.device == "cpu":
-        am_encoder_infer_config.disable_gpu()
-        am_decoder_config.disable_gpu()
-        am_postnet_config.disable_gpu()
-
-    am_encoder_infer_config.enable_memory_optim()
-    am_decoder_config.enable_memory_optim()
-    am_postnet_config.enable_memory_optim()
-
-    am_encoder_infer_predictor = inference.create_predictor(
-        am_encoder_infer_config)
-    am_decoder_predictor = inference.create_predictor(am_decoder_config)
-    am_postnet_predictor = inference.create_predictor(am_postnet_config)
-    return am_encoder_infer_predictor, am_decoder_predictor, am_postnet_predictor
-
-
 def get_am_sublayer_output(am_sublayer_predictor, input):
     am_sublayer_input_names = am_sublayer_predictor.get_input_names()
     input_handle = am_sublayer_predictor.get_input_handle(
@@ -397,11 +391,15 @@ def get_am_sublayer_output(am_sublayer_predictor, input):
     return am_sublayer_output
 
 
-def get_streaming_am_output(args, am_encoder_infer_predictor,
-                            am_decoder_predictor, am_postnet_predictor,
-                            frontend, merge_sentences, input):
+def get_streaming_am_output(input: str,
+                            am_encoder_infer_predictor,
+                            am_decoder_predictor,
+                            am_postnet_predictor,
+                            frontend,
+                            lang: str='zh',
+                            merge_sentences: bool=True):
     get_tone_ids = False
-    if args.lang == 'zh':
+    if lang == 'zh':
         input_ids = frontend.get_input_ids(
             input, merge_sentences=merge_sentences, get_tone_ids=get_tone_ids)
         phone_ids = input_ids["phone_ids"]
@@ -423,58 +421,27 @@ def get_streaming_am_output(args, am_encoder_infer_predictor,
     return normalized_mel
 
 
-def get_sess(args, filed='am'):
-    full_name = ''
-    if filed == 'am':
-        full_name = args.am
-    elif filed == 'voc':
-        full_name = args.voc
-    model_dir = str(Path(args.inference_dir) / (full_name + ".onnx"))
+# onnx
+def get_sess(model_dir: Optional[os.PathLike]=None,
+             model_file: Optional[os.PathLike]=None,
+             device: str='cpu',
+             cpu_threads: int=1,
+             use_trt: bool=False):
+
+    model_dir = str(Path(model_dir) / model_file)
     sess_options = ort.SessionOptions()
     sess_options.graph_optimization_level = ort.GraphOptimizationLevel.ORT_ENABLE_ALL
     sess_options.execution_mode = ort.ExecutionMode.ORT_SEQUENTIAL
 
-    if args.device == "gpu":
+    if device == "gpu":
         # fastspeech2/mb_melgan can't use trt now!
-        if args.use_trt:
+        if use_trt:
             providers = ['TensorrtExecutionProvider']
         else:
             providers = ['CUDAExecutionProvider']
-    elif args.device == "cpu":
+    elif device == "cpu":
         providers = ['CPUExecutionProvider']
-    sess_options.intra_op_num_threads = args.cpu_threads
+    sess_options.intra_op_num_threads = cpu_threads
     sess = ort.InferenceSession(
         model_dir, providers=providers, sess_options=sess_options)
     return sess
-
-
-# streaming am
-def get_streaming_am_sess(args):
-    full_name = args.am
-    am_encoder_infer_model_dir = str(
-        Path(args.inference_dir) / (full_name + "_am_encoder_infer" + ".onnx"))
-    am_decoder_model_dir = str(
-        Path(args.inference_dir) / (full_name + "_am_decoder" + ".onnx"))
-    am_postnet_model_dir = str(
-        Path(args.inference_dir) / (full_name + "_am_postnet" + ".onnx"))
-    sess_options = ort.SessionOptions()
-    sess_options.graph_optimization_level = ort.GraphOptimizationLevel.ORT_ENABLE_ALL
-    sess_options.execution_mode = ort.ExecutionMode.ORT_SEQUENTIAL
-    if args.device == "gpu":
-        # fastspeech2/mb_melgan can't use trt now!
-        if args.use_trt:
-            providers = ['TensorrtExecutionProvider']
-        else:
-            providers = ['CUDAExecutionProvider']
-    elif args.device == "cpu":
-        providers = ['CPUExecutionProvider']
-    sess_options.intra_op_num_threads = args.cpu_threads
-    am_encoder_infer_sess = ort.InferenceSession(
-        am_encoder_infer_model_dir,
-        providers=providers,
-        sess_options=sess_options)
-    am_decoder_sess = ort.InferenceSession(
-        am_decoder_model_dir, providers=providers, sess_options=sess_options)
-    am_postnet_sess = ort.InferenceSession(
-        am_postnet_model_dir, providers=providers, sess_options=sess_options)
-    return am_encoder_infer_sess, am_decoder_sess, am_postnet_sess

paddlespeech/t2s/exps/synthesize.py

@@ -50,11 +50,29 @@ def evaluate(args):
     print(voc_config)
 
     # acoustic model
-    am_inference, am_name, am_dataset = get_am_inference(args, am_config)
-    test_dataset = get_test_dataset(args, test_metadata, am_name, am_dataset)
+    am_name = args.am[:args.am.rindex('_')]
+    am_dataset = args.am[args.am.rindex('_') + 1:]
+    
+    am_inference = get_am_inference(
+        am=args.am,
+        am_config=am_config,
+        am_ckpt=args.am_ckpt,
+        am_stat=args.am_stat,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict,
+        speaker_dict=args.speaker_dict)
+    test_dataset = get_test_dataset(
+        test_metadata=test_metadata,
+        am=args.am,
+        speaker_dict=args.speaker_dict,
+        voice_cloning=args.voice_cloning)
 
     # vocoder
-    voc_inference = get_voc_inference(args, voc_config)
+    voc_inference = get_voc_inference(
+        voc=args.voc,
+        voc_config=voc_config,
+        voc_ckpt=args.voc_ckpt,
+        voc_stat=args.voc_stat)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)

paddlespeech/t2s/exps/synthesize_e2e.py

@@ -42,24 +42,48 @@ def evaluate(args):
     print(am_config)
     print(voc_config)
 
-    sentences = get_sentences(args)
+    sentences = get_sentences(text_file=args.text, lang=args.lang)
 
     # frontend
-    frontend = get_frontend(args)
+    frontend = get_frontend(
+        lang=args.lang,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict)
 
     # acoustic model
-    am_inference, am_name, am_dataset = get_am_inference(args, am_config)
+    am_name = args.am[:args.am.rindex('_')]
+    am_dataset = args.am[args.am.rindex('_') + 1:]
+
+    am_inference = get_am_inference(
+        am=args.am,
+        am_config=am_config,
+        am_ckpt=args.am_ckpt,
+        am_stat=args.am_stat,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict,
+        speaker_dict=args.speaker_dict)
 
     # vocoder
-    voc_inference = get_voc_inference(args, voc_config)
+    voc_inference = get_voc_inference(
+        voc=args.voc,
+        voc_config=voc_config,
+        voc_ckpt=args.voc_ckpt,
+        voc_stat=args.voc_stat)
 
     # whether dygraph to static
     if args.inference_dir:
         # acoustic model
-        am_inference = am_to_static(args, am_inference, am_name, am_dataset)
+        am_inference = am_to_static(
+            am_inference=am_inference,
+            am=args.am,
+            inference_dir=args.inference_dir,
+            speaker_dict=args.speaker_dict)
 
         # vocoder
-        voc_inference = voc_to_static(args, voc_inference)
+        voc_inference = voc_to_static(
+            voc_inference=voc_inference,
+            voc=args.voc,
+            inference_dir=args.inference_dir)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)

paddlespeech/t2s/exps/synthesize_streaming.py

@@ -49,10 +49,13 @@ def evaluate(args):
     print(am_config)
     print(voc_config)
 
-    sentences = get_sentences(args)
+    sentences = get_sentences(text_file=args.text, lang=args.lang)
 
     # frontend
-    frontend = get_frontend(args)
+    frontend = get_frontend(
+        lang=args.lang,
+        phones_dict=args.phones_dict,
+        tones_dict=args.tones_dict)
 
     with open(args.phones_dict, "r") as f:
         phn_id = [line.strip().split() for line in f.readlines()]
@@ -60,7 +63,6 @@ def evaluate(args):
     print("vocab_size:", vocab_size)
 
     # acoustic model, only support fastspeech2 here now!
-    # am_inference, am_name, am_dataset = get_am_inference(args, am_config)
     # model: {model_name}_{dataset}
     am_name = args.am[:args.am.rindex('_')]
     am_dataset = args.am[args.am.rindex('_') + 1:]
@@ -80,7 +82,11 @@ def evaluate(args):
     am_postnet = am.postnet
 
     # vocoder
-    voc_inference = get_voc_inference(args, voc_config)
+    voc_inference = get_voc_inference(
+        voc=args.voc,
+        voc_config=voc_config,
+        voc_ckpt=args.voc_ckpt,
+        voc_stat=args.voc_stat)
 
     # whether dygraph to static
     if args.inference_dir:
@@ -115,7 +121,10 @@ def evaluate(args):
             os.path.join(args.inference_dir, args.am + "_am_postnet"))
 
         # vocoder
-        voc_inference = voc_to_static(args, voc_inference)
+        voc_inference = voc_to_static(
+            voc_inference=voc_inference,
+            voc=args.voc,
+            inference_dir=args.inference_dir)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)

paddlespeech/t2s/exps/voice_cloning.py

@@ -66,10 +66,19 @@ def voice_cloning(args):
     print("frontend done!")
 
     # acoustic model
-    am_inference, *_ = get_am_inference(args, am_config)
+    am_inference = get_am_inference(
+        am=args.am,
+        am_config=am_config,
+        am_ckpt=args.am_ckpt,
+        am_stat=args.am_stat,
+        phones_dict=args.phones_dict)
 
     # vocoder
-    voc_inference = get_voc_inference(args, voc_config)
+    voc_inference = get_voc_inference(
+        voc=args.voc,
+        voc_config=voc_config,
+        voc_ckpt=args.voc_ckpt,
+        voc_stat=args.voc_stat)
 
     output_dir = Path(args.output_dir)
     output_dir.mkdir(parents=True, exist_ok=True)

paddlespeech/t2s/exps/wavernn/synthesize.py

@@ -58,8 +58,7 @@ def main():
     else:
         print("ngpu should >= 0 !")
 
-    model = WaveRNN(
-        hop_length=config.n_shift, sample_rate=config.fs, **config["model"])
+    model = WaveRNN(**config["model"])
     state_dict = paddle.load(args.checkpoint)
     model.set_state_dict(state_dict["main_params"])
 

paddlespeech/vector/modules/loss.py

@@ -91,3 +91,199 @@ class LogSoftmaxWrapper(nn.Layer):
         predictions = F.log_softmax(predictions, axis=1)
         loss = self.criterion(predictions, targets) / targets.sum()
         return loss
+
+
+class NCELoss(nn.Layer):
+    """Noise Contrastive Estimation loss funtion
+
+    Noise Contrastive Estimation (NCE) is an approximation method that is used to
+    work around the huge computational cost of large softmax layer.
+    The basic idea is to convert the prediction problem into classification problem
+    at training stage. It has been proved that these two criterions converges to
+    the same minimal point as long as noise distribution is close enough to real one.
+
+    NCE bridges the gap between generative models and discriminative models,
+    rather than simply speedup the softmax layer.
+    With NCE, you can turn almost anything into posterior with less effort (I think).
+
+    Refs:
+    NCE：http://www.cs.helsinki.fi/u/ahyvarin/papers/Gutmann10AISTATS.pdf
+    Thanks: https://github.com/mingen-pan/easy-to-use-NCE-RNN-for-Pytorch/blob/master/nce.py
+
+    Examples:
+    Q = Q_from_tokens(output_dim)
+    NCELoss(Q)
+    """
+
+    def __init__(self, Q, noise_ratio=100, Z_offset=9.5):
+        """Noise Contrastive Estimation loss funtion
+
+        Args:
+            Q (tensor): prior model, uniform or guassian
+            noise_ratio (int, optional): noise sampling times. Defaults to 100.
+            Z_offset (float, optional): scale of post processing the score. Defaults to 9.5.
+        """
+        super(NCELoss, self).__init__()
+        assert type(noise_ratio) is int
+        self.Q = paddle.to_tensor(Q, stop_gradient=False)
+        self.N = self.Q.shape[0]
+        self.K = noise_ratio
+        self.Z_offset = Z_offset
+
+    def forward(self, output, target):
+        """Forward inference
+
+        Args:
+            output (tensor): the model output, which is the input of loss function
+        """
+        output = paddle.reshape(output, [-1, self.N])
+        B = output.shape[0]
+        noise_idx = self.get_noise(B)
+        idx = self.get_combined_idx(target, noise_idx)
+        P_target, P_noise = self.get_prob(idx, output, sep_target=True)
+        Q_target, Q_noise = self.get_Q(idx)
+        loss = self.nce_loss(P_target, P_noise, Q_noise, Q_target)
+        return loss.mean()
+
+    def get_Q(self, idx, sep_target=True):
+        """Get prior model of batchsize data
+        """
+        idx_size = idx.size
+        prob_model = paddle.to_tensor(
+            self.Q.numpy()[paddle.reshape(idx, [-1]).numpy()])
+        prob_model = paddle.reshape(prob_model, [idx.shape[0], idx.shape[1]])
+        if sep_target:
+            return prob_model[:, 0], prob_model[:, 1:]
+        else:
+            return prob_model
+
+    def get_prob(self, idx, scores, sep_target=True):
+        """Post processing the score of post model(output of nn) of batchsize data
+        """
+        scores = self.get_scores(idx, scores)
+        scale = paddle.to_tensor([self.Z_offset], dtype='float64')
+        scores = paddle.add(scores, -scale)
+        prob = paddle.exp(scores)
+        if sep_target:
+            return prob[:, 0], prob[:, 1:]
+        else:
+            return prob
+
+    def get_scores(self, idx, scores):
+        """Get the score of post model(output of nn) of batchsize data
+        """
+        B, N = scores.shape
+        K = idx.shape[1]
+        idx_increment = paddle.to_tensor(
+            N * paddle.reshape(paddle.arange(B), [B, 1]) * paddle.ones([1, K]),
+            dtype="int64",
+            stop_gradient=False)
+        new_idx = idx_increment + idx
+        new_scores = paddle.index_select(
+            paddle.reshape(scores, [-1]), paddle.reshape(new_idx, [-1]))
+
+        return paddle.reshape(new_scores, [B, K])
+
+    def get_noise(self, batch_size, uniform=True):
+        """Select noise sample
+        """
+        if uniform:
+            noise = np.random.randint(self.N, size=self.K * batch_size)
+        else:
+            noise = np.random.choice(
+                self.N, self.K * batch_size, replace=True, p=self.Q.data)
+        noise = paddle.to_tensor(noise, dtype='int64', stop_gradient=False)
+        noise_idx = paddle.reshape(noise, [batch_size, self.K])
+        return noise_idx
+
+    def get_combined_idx(self, target_idx, noise_idx):
+        """Combined target and noise
+        """
+        target_idx = paddle.reshape(target_idx, [-1, 1])
+        return paddle.concat((target_idx, noise_idx), 1)
+
+    def nce_loss(self, prob_model, prob_noise_in_model, prob_noise,
+                 prob_target_in_noise):
+        """Combined the loss of target and noise
+        """
+
+        def safe_log(tensor):
+            """Safe log
+            """
+            EPSILON = 1e-10
+            return paddle.log(EPSILON + tensor)
+
+        model_loss = safe_log(prob_model /
+                              (prob_model + self.K * prob_target_in_noise))
+        model_loss = paddle.reshape(model_loss, [-1])
+
+        noise_loss = paddle.sum(
+            safe_log((self.K * prob_noise) /
+                     (prob_noise_in_model + self.K * prob_noise)), -1)
+        noise_loss = paddle.reshape(noise_loss, [-1])
+
+        loss = -(model_loss + noise_loss)
+
+        return loss
+
+
+class FocalLoss(nn.Layer):
+    """This criterion is a implemenation of Focal Loss, which is proposed in 
+    Focal Loss for Dense Object Detection.
+
+        Loss(x, class) = - \alpha (1-softmax(x)[class])^gamma \log(softmax(x)[class])
+
+    The losses are averaged across observations for each minibatch.
+
+    Args:
+        alpha(1D Tensor, Variable) : the scalar factor for this criterion
+        gamma(float, double) : gamma > 0; reduces the relative loss for well-classified examples (p > .5), 
+                                putting more focus on hard, misclassified examples
+        size_average(bool): By default, the losses are averaged over observations for each minibatch.
+                            However, if the field size_average is set to False, the losses are
+                            instead summed for each minibatch.
+    """
+
+    def __init__(self, alpha=1, gamma=0, size_average=True, ignore_index=-100):
+        super(FocalLoss, self).__init__()
+        self.alpha = alpha
+        self.gamma = gamma
+        self.size_average = size_average
+        self.ce = nn.CrossEntropyLoss(
+            ignore_index=ignore_index, reduction="none")
+
+    def forward(self, outputs, targets):
+        """Forword inference.
+
+        Args:
+            outputs: input tensor
+            target: target label tensor
+        """
+        ce_loss = self.ce(outputs, targets)
+        pt = paddle.exp(-ce_loss)
+        focal_loss = self.alpha * (1 - pt)**self.gamma * ce_loss
+        if self.size_average:
+            return focal_loss.mean()
+        else:
+            return focal_loss.sum()
+
+
+if __name__ == "__main__":
+    import numpy as np
+    from paddlespeech.vector.utils.vector_utils import Q_from_tokens
+    paddle.set_device("cpu")
+
+    input_data = paddle.uniform([5, 100], dtype="float64")
+    label_data = np.random.randint(0, 100, size=(5)).astype(np.int64)
+
+    input = paddle.to_tensor(input_data)
+    label = paddle.to_tensor(label_data)
+
+    loss1 = FocalLoss()
+    loss = loss1.forward(input, label)
+    print("loss: %.5f" % (loss))
+
+    Q = Q_from_tokens(100)
+    loss2 = NCELoss(Q)
+    loss = loss2.forward(input, label)
+    print("loss: %.5f" % (loss))

paddlespeech/vector/utils/vector_utils.py

@@ -11,6 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import paddle
 
 
 def get_chunks(seg_dur, audio_id, audio_duration):
@@ -30,3 +31,11 @@ def get_chunks(seg_dur, audio_id, audio_duration):
         for i in range(num_chunks)
     ]
     return chunk_lst
+
+
+def Q_from_tokens(token_num):
+    """Get prior model, data from uniform, would support others(guassian) in future
+    """
+    freq = [1] * token_num
+    Q = paddle.to_tensor(freq, dtype='float64')
+    return Q / Q.sum()

speechx/CMakeLists.txt

@@ -63,7 +63,8 @@ include(libsndfile)
 # include(boost) # not work
 set(boost_SOURCE_DIR ${fc_patch}/boost-src)
 set(BOOST_ROOT ${boost_SOURCE_DIR})
-# #find_package(boost REQUIRED PATHS ${BOOST_ROOT})
+include_directories(${boost_SOURCE_DIR})
+link_directories(${boost_SOURCE_DIR}/stage/lib)
 
 # Eigen
 include(eigen)
@@ -141,4 +142,4 @@ set(DEPS ${DEPS}
 set(SPEECHX_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/speechx)
 
 add_subdirectory(speechx)
-add_subdirectory(examples)
+add_subdirectory(examples)
\ No newline at end of file

speechx/examples/ds2_ol/CMakeLists.txt

@@ -2,4 +2,5 @@ cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
 
 add_subdirectory(feat)
 add_subdirectory(nnet)
-add_subdirectory(decoder)
+add_subdirectory(decoder)
\ No newline at end of file
+add_subdirectory(websocket)

speechx/examples/ds2_ol/aishell/path.sh

 # This contains the locations of binarys build required for running the examples.
 
-SPEECHX_ROOT=$PWD/../../../
+SPEECHX_ROOT=$PWD/../../..
 SPEECHX_EXAMPLES=$SPEECHX_ROOT/build/examples
 
 SPEECHX_TOOLS=$SPEECHX_ROOT/tools
@@ -10,5 +10,5 @@ TOOLS_BIN=$SPEECHX_TOOLS/valgrind/install/bin
 
 export LC_AL=C
 
-SPEECHX_BIN=$SPEECHX_EXAMPLES/ds2_ol/decoder:$SPEECHX_EXAMPLES/ds2_ol/feat
-export PATH=$PATH:$SPEECHX_BIN:$TOOLS_BIN
+SPEECHX_BIN=$SPEECHX_EXAMPLES/ds2_ol/decoder:$SPEECHX_EXAMPLES/ds2_ol/feat:$SPEECHX_EXAMPLES/ds2_ol/websocket
+export PATH=$PATH:$SPEECHX_BIN:$TOOLS_BIN
\ No newline at end of file

speechx/examples/ds2_ol/aishell/run.sh

@@ -87,7 +87,7 @@ if [ ${stage} -le 2 ] && [ ${stop_stage} -ge 2 ]; then
     ctc-prefix-beam-search-decoder-ol \
         --feature_rspecifier=scp:$data/split${nj}/JOB/feat.scp \
         --model_path=$model_dir/avg_1.jit.pdmodel \
-        --param_path=$model_dir/avg_1.jit.pdiparams \
+        --params_path=$model_dir/avg_1.jit.pdiparams \
         --model_output_names=softmax_0.tmp_0,tmp_5,concat_0.tmp_0,concat_1.tmp_0 \
         --dict_file=$vocb_dir/vocab.txt \
         --result_wspecifier=ark,t:$data/split${nj}/JOB/result
@@ -102,7 +102,7 @@ if [ ${stage} -le 3 ] && [ ${stop_stage} -ge 3 ]; then
     ctc-prefix-beam-search-decoder-ol \
         --feature_rspecifier=scp:$data/split${nj}/JOB/feat.scp \
         --model_path=$model_dir/avg_1.jit.pdmodel \
-        --param_path=$model_dir/avg_1.jit.pdiparams \
+        --params_path=$model_dir/avg_1.jit.pdiparams \
         --model_output_names=softmax_0.tmp_0,tmp_5,concat_0.tmp_0,concat_1.tmp_0 \
         --dict_file=$vocb_dir/vocab.txt \
         --lm_path=$lm \
@@ -129,7 +129,7 @@ if [ ${stage} -le 4 ] && [ ${stop_stage} -ge 4 ]; then
     wfst-decoder-ol \
         --feature_rspecifier=scp:$data/split${nj}/JOB/feat.scp \
         --model_path=$model_dir/avg_1.jit.pdmodel \
-        --param_path=$model_dir/avg_1.jit.pdiparams \
+        --params_path=$model_dir/avg_1.jit.pdiparams \
         --word_symbol_table=$graph_dir/words.txt \
         --model_output_names=softmax_0.tmp_0,tmp_5,concat_0.tmp_0,concat_1.tmp_0 \
         --graph_path=$graph_dir/TLG.fst --max_active=7500 \

speechx/examples/ds2_ol/aishell/websocket_client.sh

+#!/bin/bash
+set +x
+set -e
+
+. path.sh
+
+# 1. compile
+if [ ! -d ${SPEECHX_EXAMPLES} ]; then
+    pushd ${SPEECHX_ROOT} 
+    bash build.sh
+    popd
+fi
+
+# input
+mkdir -p data
+data=$PWD/data
+ckpt_dir=$data/model
+model_dir=$ckpt_dir/exp/deepspeech2_online/checkpoints/
+vocb_dir=$ckpt_dir/data/lang_char
+# output
+aishell_wav_scp=aishell_test.scp
+if [ ! -d $data/test ]; then
+    pushd $data
+    wget -c https://paddlespeech.bj.bcebos.com/s2t/paddle_asr_online/aishell_test.zip
+    unzip  aishell_test.zip
+    popd
+
+    realpath $data/test/*/*.wav > $data/wavlist
+    awk -F '/' '{ print $(NF) }' $data/wavlist | awk -F '.' '{ print $1 }' > $data/utt_id
+    paste $data/utt_id $data/wavlist > $data/$aishell_wav_scp
+fi
+
+export GLOG_logtostderr=1
+
+# websocket client
+websocket_client_main \
+    --wav_rspecifier=scp:$data/$aishell_wav_scp --streaming_chunk=0.36

speechx/examples/ds2_ol/aishell/websocket_server.sh

+#!/bin/bash
+set +x
+set -e
+
+. path.sh
+
+
+# 1. compile
+if [ ! -d ${SPEECHX_EXAMPLES} ]; then
+    pushd ${SPEECHX_ROOT} 
+    bash build.sh
+    popd
+fi
+
+# input
+mkdir -p data
+data=$PWD/data
+ckpt_dir=$data/model
+model_dir=$ckpt_dir/exp/deepspeech2_online/checkpoints/
+vocb_dir=$ckpt_dir/data/lang_char/
+
+# output
+aishell_wav_scp=aishell_test.scp
+if [ ! -d $data/test ]; then
+    pushd $data
+    wget -c https://paddlespeech.bj.bcebos.com/s2t/paddle_asr_online/aishell_test.zip
+    unzip  aishell_test.zip
+    popd
+
+    realpath $data/test/*/*.wav > $data/wavlist
+    awk -F '/' '{ print $(NF) }' $data/wavlist | awk -F '.' '{ print $1 }' > $data/utt_id
+    paste $data/utt_id $data/wavlist > $data/$aishell_wav_scp
+fi
+
+
+if [ ! -d $ckpt_dir ]; then
+    mkdir -p $ckpt_dir
+    wget -P $ckpt_dir -c https://paddlespeech.bj.bcebos.com/s2t/aishell/asr0/asr0_deepspeech2_online_aishell_ckpt_0.2.0.model.tar.gz
+    tar xzfv $ckpt_dir/asr0_deepspeech2_online_aishell_ckpt_0.2.0.model.tar.gz -C $ckpt_dir
+fi
+
+
+export GLOG_logtostderr=1
+
+# 3. gen cmvn 
+cmvn=$PWD/cmvn.ark
+cmvn-json2kaldi --json_file=$ckpt_dir/data/mean_std.json --cmvn_write_path=$cmvn
+
+text=$data/test/text
+graph_dir=./aishell_graph
+if [ ! -d $graph_dir ]; then
+    wget -c https://paddlespeech.bj.bcebos.com/s2t/paddle_asr_online/aishell_graph.zip
+    unzip aishell_graph.zip 
+fi
+
+# 5. test websocket server 
+websocket_server_main \
+    --cmvn_file=$cmvn \
+    --model_path=$model_dir/avg_1.jit.pdmodel \
+    --streaming_chunk=0.1 \
+    --convert2PCM32=true \
+    --params_path=$model_dir/avg_1.jit.pdiparams \
+    --word_symbol_table=$graph_dir/words.txt \
+    --model_output_names=softmax_0.tmp_0,tmp_5,concat_0.tmp_0,concat_1.tmp_0 \
+    --graph_path=$graph_dir/TLG.fst --max_active=7500 \
+    --acoustic_scale=1.2 

speechx/examples/ds2_ol/decoder/CMakeLists.txt

@@ -17,3 +17,6 @@ add_executable(${bin_name} ${CMAKE_CURRENT_SOURCE_DIR}/${bin_name}.cc)
 target_include_directories(${bin_name} PRIVATE ${SPEECHX_ROOT} ${SPEECHX_ROOT}/kaldi)
 target_link_libraries(${bin_name} PUBLIC nnet decoder fst utils gflags glog kaldi-base kaldi-matrix kaldi-util ${DEPS})
 
+add_executable(recognizer_test_main ${CMAKE_CURRENT_SOURCE_DIR}/recognizer_test_main.cc)
+target_include_directories(recognizer_test_main PRIVATE ${SPEECHX_ROOT} ${SPEECHX_ROOT}/kaldi)
+target_link_libraries(recognizer_test_main PUBLIC frontend kaldi-feat-common nnet decoder fst utils gflags glog kaldi-base kaldi-matrix kaldi-util kaldi-decoder ${DEPS})

speechx/examples/ds2_ol/decoder/ctc-prefix-beam-search-decoder-ol.cc

@@ -34,12 +34,10 @@ DEFINE_int32(receptive_field_length,
 DEFINE_int32(downsampling_rate,
              4,
              "two CNN(kernel=5) module downsampling rate.");
-DEFINE_string(
-    model_input_names,
-    "audio_chunk,audio_chunk_lens,chunk_state_h_box,chunk_state_c_box",
-    "model input names");
 DEFINE_string(model_output_names,
-              "softmax_0.tmp_0,tmp_5,concat_0.tmp_0,concat_1.tmp_0",
+              "save_infer_model/scale_0.tmp_1,save_infer_model/"
+              "scale_1.tmp_1,save_infer_model/scale_2.tmp_1,save_infer_model/"
+              "scale_3.tmp_1",
               "model output names");
 DEFINE_string(model_cache_names, "5-1-1024,5-1-1024", "model cache names");
 
@@ -58,12 +56,11 @@ int main(int argc, char* argv[]) {
     kaldi::SequentialBaseFloatMatrixReader feature_reader(
         FLAGS_feature_rspecifier);
     kaldi::TokenWriter result_writer(FLAGS_result_wspecifier);
-
-    std::string model_graph = FLAGS_model_path;
+    std::string model_path = FLAGS_model_path;
     std::string model_params = FLAGS_param_path;
     std::string dict_file = FLAGS_dict_file;
     std::string lm_path = FLAGS_lm_path;
-    LOG(INFO) << "model path: " << model_graph;
+    LOG(INFO) << "model path: " << model_path;
     LOG(INFO) << "model param: " << model_params;
     LOG(INFO) << "dict path: " << dict_file;
     LOG(INFO) << "lm path: " << lm_path;
@@ -76,10 +73,9 @@ int main(int argc, char* argv[]) {
     ppspeech::CTCBeamSearch decoder(opts);
 
     ppspeech::ModelOptions model_opts;
-    model_opts.model_path = model_graph;
+    model_opts.model_path = model_path;
     model_opts.params_path = model_params;
     model_opts.cache_shape = FLAGS_model_cache_names;
-    model_opts.input_names = FLAGS_model_input_names;
     model_opts.output_names = FLAGS_model_output_names;
     std::shared_ptr<ppspeech::PaddleNnet> nnet(
         new ppspeech::PaddleNnet(model_opts));
@@ -125,7 +121,6 @@ int main(int argc, char* argv[]) {
             if (feature_chunk_size < receptive_field_length) break;
 
             int32 start = chunk_idx * chunk_stride;
-            int32 end = start + chunk_size;
 
             for (int row_id = 0; row_id < chunk_size; ++row_id) {
                 kaldi::SubVector<kaldi::BaseFloat> tmp(feature, start);

speechx/examples/ds2_ol/decoder/recognizer_test_main.cc

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "decoder/recognizer.h"
+#include "decoder/param.h"
+#include "kaldi/feat/wave-reader.h"
+#include "kaldi/util/table-types.h"
+
+DEFINE_string(wav_rspecifier, "", "test feature rspecifier");
+DEFINE_string(result_wspecifier, "", "test result wspecifier");
+
+int main(int argc, char* argv[]) {
+    gflags::ParseCommandLineFlags(&argc, &argv, false);
+    google::InitGoogleLogging(argv[0]);
+
+    ppspeech::RecognizerResource resource = ppspeech::InitRecognizerResoure();
+    ppspeech::Recognizer recognizer(resource);
+
+    kaldi::SequentialTableReader<kaldi::WaveHolder> wav_reader(
+        FLAGS_wav_rspecifier);
+    kaldi::TokenWriter result_writer(FLAGS_result_wspecifier);
+    int sample_rate = 16000;
+    float streaming_chunk = FLAGS_streaming_chunk;
+    int chunk_sample_size = streaming_chunk * sample_rate;
+    LOG(INFO) << "sr: " << sample_rate;
+    LOG(INFO) << "chunk size (s): " << streaming_chunk;
+    LOG(INFO) << "chunk size (sample): " << chunk_sample_size;
+
+    int32 num_done = 0, num_err = 0;
+
+    for (; !wav_reader.Done(); wav_reader.Next()) {
+        std::string utt = wav_reader.Key();
+        const kaldi::WaveData& wave_data = wav_reader.Value();
+
+        int32 this_channel = 0;
+        kaldi::SubVector<kaldi::BaseFloat> waveform(wave_data.Data(),
+                                                    this_channel);
+        int tot_samples = waveform.Dim();
+        LOG(INFO) << "wav len (sample): " << tot_samples;
+
+        int sample_offset = 0;
+        std::vector<kaldi::Vector<BaseFloat>> feats;
+        int feature_rows = 0;
+        while (sample_offset < tot_samples) {
+            int cur_chunk_size =
+                std::min(chunk_sample_size, tot_samples - sample_offset);
+
+            kaldi::Vector<kaldi::BaseFloat> wav_chunk(cur_chunk_size);
+            for (int i = 0; i < cur_chunk_size; ++i) {
+                wav_chunk(i) = waveform(sample_offset + i);
+            }
+
+            recognizer.Accept(wav_chunk);
+            if (cur_chunk_size < chunk_sample_size) {
+                recognizer.SetFinished();
+            }
+            recognizer.Decode();
+
+            sample_offset += cur_chunk_size;
+        }
+        std::string result;
+        result = recognizer.GetFinalResult();
+        recognizer.Reset();
+        if (result.empty()) {
+            // the TokenWriter can not write empty string.
+            ++num_err;
+            KALDI_LOG << " the result of " << utt << " is empty";
+            continue;
+        }
+        KALDI_LOG << " the result of " << utt << " is " << result;
+        result_writer.Write(utt, result);
+        ++num_done;
+    }
+}
\ No newline at end of file

speechx/examples/ds2_ol/feat/cmvn-json2kaldi.cc

@@ -73,9 +73,9 @@ int main(int argc, char* argv[]) {
         LOG(INFO) << "cmvn stats have write into: " << FLAGS_cmvn_write_path;
         LOG(INFO) << "Binary: " << FLAGS_binary;
     } catch (simdjson::simdjson_error& err) {
-        LOG(ERR) << err.what();
+        LOG(ERROR) << err.what();
     }
 
 
     return 0;
-}
+}
\ No newline at end of file

speechx/examples/ds2_ol/feat/linear-spectrogram-wo-db-norm-ol.cc

@@ -32,7 +32,6 @@ DEFINE_string(feature_wspecifier, "", "output feats wspecifier");
 DEFINE_string(cmvn_file, "./cmvn.ark", "read cmvn");
 DEFINE_double(streaming_chunk, 0.36, "streaming feature chunk size");
 
-
 int main(int argc, char* argv[]) {
     gflags::ParseCommandLineFlags(&argc, &argv, false);
     google::InitGoogleLogging(argv[0]);
@@ -66,7 +65,8 @@ int main(int argc, char* argv[]) {
     std::unique_ptr<ppspeech::FrontendInterface> cmvn(
         new ppspeech::CMVN(FLAGS_cmvn_file, std::move(linear_spectrogram)));
 
-    ppspeech::FeatureCache feature_cache(kint16max, std::move(cmvn));
+    ppspeech::FeatureCacheOptions feat_cache_opts;
+    ppspeech::FeatureCache feature_cache(feat_cache_opts, std::move(cmvn));
     LOG(INFO) << "feat dim: " << feature_cache.Dim();
 
     int sample_rate = 16000;

speechx/examples/ds2_ol/websocket/CMakeLists.txt

+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+add_executable(websocket_server_main ${CMAKE_CURRENT_SOURCE_DIR}/websocket_server_main.cc)
+target_include_directories(websocket_server_main PRIVATE ${SPEECHX_ROOT} ${SPEECHX_ROOT}/kaldi)
+target_link_libraries(websocket_server_main PUBLIC frontend kaldi-feat-common nnet decoder fst utils gflags glog kaldi-base kaldi-matrix kaldi-util kaldi-decoder websocket ${DEPS})
+
+add_executable(websocket_client_main ${CMAKE_CURRENT_SOURCE_DIR}/websocket_client_main.cc)
+target_include_directories(websocket_client_main PRIVATE ${SPEECHX_ROOT} ${SPEECHX_ROOT}/kaldi)
+target_link_libraries(websocket_client_main PUBLIC frontend kaldi-feat-common nnet decoder fst utils gflags glog kaldi-base kaldi-matrix kaldi-util kaldi-decoder websocket ${DEPS})
+

speechx/examples/ds2_ol/websocket/websocket_client_main.cc

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "websocket/websocket_client.h"
+#include "kaldi/feat/wave-reader.h"
+#include "kaldi/util/kaldi-io.h"
+#include "kaldi/util/table-types.h"
+
+DEFINE_string(host, "127.0.0.1", "host of websocket server");
+DEFINE_int32(port, 201314, "port of websocket server");
+DEFINE_string(wav_rspecifier, "", "test wav scp path");
+DEFINE_double(streaming_chunk, 0.1, "streaming feature chunk size");
+
+using kaldi::int16;
+int main(int argc, char* argv[]) {
+    gflags::ParseCommandLineFlags(&argc, &argv, false);
+    google::InitGoogleLogging(argv[0]);
+    ppspeech::WebSocketClient client(FLAGS_host, FLAGS_port);
+
+    kaldi::SequentialTableReader<kaldi::WaveHolder> wav_reader(
+        FLAGS_wav_rspecifier);
+
+    const int sample_rate = 16000;
+    const float streaming_chunk = FLAGS_streaming_chunk;
+    const int chunk_sample_size = streaming_chunk * sample_rate;
+
+    for (; !wav_reader.Done(); wav_reader.Next()) {
+        client.SendStartSignal();
+        std::string utt = wav_reader.Key();
+        const kaldi::WaveData& wave_data = wav_reader.Value();
+        CHECK_EQ(wave_data.SampFreq(), sample_rate);
+
+        int32 this_channel = 0;
+        kaldi::SubVector<kaldi::BaseFloat> waveform(wave_data.Data(),
+                                                    this_channel);
+        const int tot_samples = waveform.Dim();
+        int sample_offset = 0;
+
+        while (sample_offset < tot_samples) {
+            int cur_chunk_size =
+                std::min(chunk_sample_size, tot_samples - sample_offset);
+
+            std::vector<int16> wav_chunk(cur_chunk_size);
+            for (int i = 0; i < cur_chunk_size; ++i) {
+                wav_chunk[i] = static_cast<int16>(waveform(sample_offset + i));
+            }
+            client.SendBinaryData(wav_chunk.data(),
+                                  wav_chunk.size() * sizeof(int16));
+
+
+            sample_offset += cur_chunk_size;
+            LOG(INFO) << "Send " << cur_chunk_size << " samples";
+            std::this_thread::sleep_for(
+                std::chrono::milliseconds(static_cast<int>(1 * 1000)));
+
+            if (cur_chunk_size < chunk_sample_size) {
+                client.SendEndSignal();
+            }
+        }
+
+        while (!client.Done()) {
+        }
+        std::string result = client.GetResult();
+        LOG(INFO) << "utt: " << utt << " " << result;
+
+
+        client.Join();
+        return 0;
+    }
+    return 0;
+}

speechx/examples/ds2_ol/websocket/websocket_server_main.cc

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "websocket/websocket_server.h"
+#include "decoder/param.h"
+
+DEFINE_int32(port, 201314, "websocket listening port");
+
+int main(int argc, char *argv[]) {
+    gflags::ParseCommandLineFlags(&argc, &argv, false);
+    google::InitGoogleLogging(argv[0]);
+
+    ppspeech::RecognizerResource resource = ppspeech::InitRecognizerResoure();
+
+    ppspeech::WebSocketServer server(FLAGS_port, resource);
+    LOG(INFO) << "Listening at port " << FLAGS_port;
+    server.Start();
+    return 0;
+}

speechx/speechx/CMakeLists.txt

@@ -30,4 +30,10 @@ include_directories(
 ${CMAKE_CURRENT_SOURCE_DIR}
 ${CMAKE_CURRENT_SOURCE_DIR}/decoder
 )
-add_subdirectory(decoder)
+add_subdirectory(decoder)
\ No newline at end of file
+
+include_directories(
+${CMAKE_CURRENT_SOURCE_DIR}
+${CMAKE_CURRENT_SOURCE_DIR}/websocket
+)
+add_subdirectory(websocket)

speechx/speechx/base/common.h

@@ -28,8 +28,10 @@
 #include <sstream>
 #include <stack>
 #include <string>
+#include <thread>
 #include <unordered_map>
 #include <unordered_set>
+#include <utility>
 #include <vector>
 
 #include "base/basic_types.h"

speechx/speechx/decoder/CMakeLists.txt

@@ -7,5 +7,6 @@ add_library(decoder STATIC
   ctc_decoders/path_trie.cpp
   ctc_decoders/scorer.cpp
   ctc_tlg_decoder.cc
+  recognizer.cc
 )
-target_link_libraries(decoder PUBLIC kenlm utils fst)
+target_link_libraries(decoder PUBLIC kenlm utils fst frontend nnet kaldi-decoder)

speechx/speechx/decoder/ctc_tlg_decoder.cc

@@ -33,7 +33,6 @@ void TLGDecoder::InitDecoder() {
 void TLGDecoder::AdvanceDecode(
     const std::shared_ptr<kaldi::DecodableInterface>& decodable) {
     while (!decodable->IsLastFrame(frame_decoded_size_)) {
-        LOG(INFO) << "num frame decode: " << frame_decoded_size_;
         AdvanceDecoding(decodable.get());
     }
 }
@@ -63,4 +62,4 @@ std::string TLGDecoder::GetFinalBestPath() {
     }
     return words;
 }
-}
+}
\ No newline at end of file

speechx/speechx/decoder/param.h

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include "base/common.h"
+
+#include "decoder/ctc_beam_search_decoder.h"
+#include "decoder/ctc_tlg_decoder.h"
+#include "frontend/audio/feature_pipeline.h"
+
+DEFINE_string(cmvn_file, "", "read cmvn");
+DEFINE_double(streaming_chunk, 0.1, "streaming feature chunk size");
+DEFINE_bool(convert2PCM32, true, "audio convert to pcm32");
+DEFINE_string(model_path, "avg_1.jit.pdmodel", "paddle nnet model");
+DEFINE_string(params_path, "avg_1.jit.pdiparams", "paddle nnet model param");
+DEFINE_string(word_symbol_table, "words.txt", "word symbol table");
+DEFINE_string(graph_path, "TLG", "decoder graph");
+DEFINE_double(acoustic_scale, 1.0, "acoustic scale");
+DEFINE_int32(max_active, 7500, "max active");
+DEFINE_double(beam, 15.0, "decoder beam");
+DEFINE_double(lattice_beam, 7.5, "decoder beam");
+DEFINE_int32(receptive_field_length,
+             7,
+             "receptive field of two CNN(kernel=5) downsampling module.");
+DEFINE_int32(downsampling_rate,
+             4,
+             "two CNN(kernel=5) module downsampling rate.");
+DEFINE_string(model_output_names,
+              "save_infer_model/scale_0.tmp_1,save_infer_model/"
+              "scale_1.tmp_1,save_infer_model/scale_2.tmp_1,save_infer_model/"
+              "scale_3.tmp_1",
+              "model output names");
+DEFINE_string(model_cache_names, "5-1-1024,5-1-1024", "model cache names");
+
+namespace ppspeech {
+// todo refactor later
+FeaturePipelineOptions InitFeaturePipelineOptions() {
+    FeaturePipelineOptions opts;
+    opts.cmvn_file = FLAGS_cmvn_file;
+    opts.linear_spectrogram_opts.streaming_chunk = FLAGS_streaming_chunk;
+    opts.convert2PCM32 = FLAGS_convert2PCM32;
+    kaldi::FrameExtractionOptions frame_opts;
+    frame_opts.frame_length_ms = 20;
+    frame_opts.frame_shift_ms = 10;
+    frame_opts.remove_dc_offset = false;
+    frame_opts.window_type = "hanning";
+    frame_opts.preemph_coeff = 0.0;
+    frame_opts.dither = 0.0;
+    opts.linear_spectrogram_opts.frame_opts = frame_opts;
+    opts.feature_cache_opts.frame_chunk_size = FLAGS_receptive_field_length;
+    opts.feature_cache_opts.frame_chunk_stride = FLAGS_downsampling_rate;
+    return opts;
+}
+
+ModelOptions InitModelOptions() {
+    ModelOptions model_opts;
+    model_opts.model_path = FLAGS_model_path;
+    model_opts.params_path = FLAGS_params_path;
+    model_opts.cache_shape = FLAGS_model_cache_names;
+    model_opts.output_names = FLAGS_model_output_names;
+    return model_opts;
+}
+
+TLGDecoderOptions InitDecoderOptions() {
+    TLGDecoderOptions decoder_opts;
+    decoder_opts.word_symbol_table = FLAGS_word_symbol_table;
+    decoder_opts.fst_path = FLAGS_graph_path;
+    decoder_opts.opts.max_active = FLAGS_max_active;
+    decoder_opts.opts.beam = FLAGS_beam;
+    decoder_opts.opts.lattice_beam = FLAGS_lattice_beam;
+    return decoder_opts;
+}
+
+RecognizerResource InitRecognizerResoure() {
+    RecognizerResource resource;
+    resource.acoustic_scale = FLAGS_acoustic_scale;
+    resource.feature_pipeline_opts = InitFeaturePipelineOptions();
+    resource.model_opts = InitModelOptions();
+    resource.tlg_opts = InitDecoderOptions();
+    return resource;
+}
+}
\ No newline at end of file

speechx/speechx/decoder/recognizer.cc

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "decoder/recognizer.h"
+
+namespace ppspeech {
+
+using kaldi::Vector;
+using kaldi::VectorBase;
+using kaldi::BaseFloat;
+using std::vector;
+using kaldi::SubVector;
+using std::unique_ptr;
+
+Recognizer::Recognizer(const RecognizerResource& resource) {
+    // resource_ = resource;
+    const FeaturePipelineOptions& feature_opts = resource.feature_pipeline_opts;
+    feature_pipeline_.reset(new FeaturePipeline(feature_opts));
+    std::shared_ptr<PaddleNnet> nnet(new PaddleNnet(resource.model_opts));
+    BaseFloat ac_scale = resource.acoustic_scale;
+    decodable_.reset(new Decodable(nnet, feature_pipeline_, ac_scale));
+    decoder_.reset(new TLGDecoder(resource.tlg_opts));
+    input_finished_ = false;
+}
+
+void Recognizer::Accept(const Vector<BaseFloat>& waves) {
+    feature_pipeline_->Accept(waves);
+}
+
+void Recognizer::Decode() { decoder_->AdvanceDecode(decodable_); }
+
+std::string Recognizer::GetFinalResult() {
+    return decoder_->GetFinalBestPath();
+}
+
+void Recognizer::SetFinished() {
+    feature_pipeline_->SetFinished();
+    input_finished_ = true;
+}
+
+bool Recognizer::IsFinished() { return input_finished_; }
+
+void Recognizer::Reset() {
+    feature_pipeline_->Reset();
+    decodable_->Reset();
+    decoder_->Reset();
+}
+
+}  // namespace ppspeech
\ No newline at end of file

speechx/speechx/decoder/recognizer.h

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// todo refactor later (SGoat)
+
+#pragma once
+
+#include "decoder/ctc_beam_search_decoder.h"
+#include "decoder/ctc_tlg_decoder.h"
+#include "frontend/audio/feature_pipeline.h"
+#include "nnet/decodable.h"
+#include "nnet/paddle_nnet.h"
+
+namespace ppspeech {
+
+struct RecognizerResource {
+    FeaturePipelineOptions feature_pipeline_opts;
+    ModelOptions model_opts;
+    TLGDecoderOptions tlg_opts;
+    //    CTCBeamSearchOptions beam_search_opts;
+    kaldi::BaseFloat acoustic_scale;
+    RecognizerResource()
+        : acoustic_scale(1.0),
+          feature_pipeline_opts(),
+          model_opts(),
+          tlg_opts() {}
+};
+
+class Recognizer {
+  public:
+    explicit Recognizer(const RecognizerResource& resouce);
+    void Accept(const kaldi::Vector<kaldi::BaseFloat>& waves);
+    void Decode();
+    std::string GetFinalResult();
+    void SetFinished();
+    bool IsFinished();
+    void Reset();
+
+  private:
+    // std::shared_ptr<RecognizerResource> resource_;
+    // RecognizerResource resource_;
+    std::shared_ptr<FeaturePipeline> feature_pipeline_;
+    std::shared_ptr<Decodable> decodable_;
+    std::unique_ptr<TLGDecoder> decoder_;
+    bool input_finished_;
+};
+
+}  // namespace ppspeech
\ No newline at end of file

speechx/speechx/frontend/audio/CMakeLists.txt

@@ -6,6 +6,7 @@ add_library(frontend STATIC
   linear_spectrogram.cc
   audio_cache.cc
   feature_cache.cc
+  feature_pipeline.cc
 )
 
-target_link_libraries(frontend PUBLIC kaldi-matrix)
+target_link_libraries(frontend PUBLIC kaldi-matrix kaldi-feat-common)
\ No newline at end of file

speechx/speechx/frontend/audio/audio_cache.cc

@@ -41,7 +41,7 @@ void AudioCache::Accept(const VectorBase<BaseFloat>& waves) {
         ready_feed_condition_.wait(lock);
     }
     for (size_t idx = 0; idx < waves.Dim(); ++idx) {
-        int32 buffer_idx = (idx + offset_) % ring_buffer_.size();
+        int32 buffer_idx = (idx + offset_ + size_) % ring_buffer_.size();
         ring_buffer_[buffer_idx] = waves(idx);
         if (convert2PCM32_)
             ring_buffer_[buffer_idx] = Convert2PCM32(waves(idx));

speechx/speechx/frontend/audio/audio_cache.h

@@ -24,7 +24,7 @@ namespace ppspeech {
 class AudioCache : public FrontendInterface {
   public:
     explicit AudioCache(int buffer_size = 1000 * kint16max,
-                        bool convert2PCM32 = false);
+                        bool convert2PCM32 = true);
 
     virtual void Accept(const kaldi::VectorBase<BaseFloat>& waves);
 

speechx/speechx/frontend/audio/feature_cache.cc

@@ -23,10 +23,13 @@ using std::vector;
 using kaldi::SubVector;
 using std::unique_ptr;
 
-FeatureCache::FeatureCache(int max_size,
+FeatureCache::FeatureCache(FeatureCacheOptions opts,
                            unique_ptr<FrontendInterface> base_extractor) {
-    max_size_ = max_size;
+    max_size_ = opts.max_size;
+    frame_chunk_stride_ = opts.frame_chunk_stride;
+    frame_chunk_size_ = opts.frame_chunk_size;
     base_extractor_ = std::move(base_extractor);
+    dim_ = base_extractor_->Dim();
 }
 
 void FeatureCache::Accept(const kaldi::VectorBase<kaldi::BaseFloat>& inputs) {
@@ -44,13 +47,14 @@ bool FeatureCache::Read(kaldi::Vector<kaldi::BaseFloat>* feats) {
 
     std::unique_lock<std::mutex> lock(mutex_);
     while (cache_.empty() && base_extractor_->IsFinished() == false) {
-        ready_read_condition_.wait(lock);
-        BaseFloat elapsed = timer.Elapsed() * 1000;
-        // todo replace 1.0 with timeout_
-        if (elapsed > 1.0) {
+        // todo refactor: wait
+        // ready_read_condition_.wait(lock);
+        int32 elapsed = static_cast<int32>(timer.Elapsed() * 1000);
+        // todo replace 1 with timeout_, 1 ms
+        if (elapsed > 1) {
             return false;
         }
-        usleep(1000);  // sleep 1 ms
+        usleep(100);  // sleep 0.1 ms
     }
     if (cache_.empty()) return false;
     feats->Resize(cache_.front().Dim());
@@ -63,25 +67,41 @@ bool FeatureCache::Read(kaldi::Vector<kaldi::BaseFloat>* feats) {
 // read all data from base_feature_extractor_ into cache_
 bool FeatureCache::Compute() {
     // compute and feed
-    Vector<BaseFloat> feature_chunk;
-    bool result = base_extractor_->Read(&feature_chunk);
+    Vector<BaseFloat> feature;
+    bool result = base_extractor_->Read(&feature);
+    if (result == false || feature.Dim() == 0) return false;
+    int32 joint_len = feature.Dim() + remained_feature_.Dim();
+    int32 num_chunk =
+        ((joint_len / dim_) - frame_chunk_size_) / frame_chunk_stride_ + 1;
 
-    std::unique_lock<std::mutex> lock(mutex_);
-    while (cache_.size() >= max_size_) {
-        ready_feed_condition_.wait(lock);
-    }
+    Vector<BaseFloat> joint_feature(joint_len);
+    joint_feature.Range(0, remained_feature_.Dim())
+        .CopyFromVec(remained_feature_);
+    joint_feature.Range(remained_feature_.Dim(), feature.Dim())
+        .CopyFromVec(feature);
 
-    // feed cache
-    if (feature_chunk.Dim() != 0) {
+    for (int chunk_idx = 0; chunk_idx < num_chunk; ++chunk_idx) {
+        int32 start = chunk_idx * frame_chunk_stride_ * dim_;
+        Vector<BaseFloat> feature_chunk(frame_chunk_size_ * dim_);
+        SubVector<BaseFloat> tmp(joint_feature.Data() + start,
+                                 frame_chunk_size_ * dim_);
+        feature_chunk.CopyFromVec(tmp);
+
+        std::unique_lock<std::mutex> lock(mutex_);
+        while (cache_.size() >= max_size_) {
+            ready_feed_condition_.wait(lock);
+        }
+
+        // feed cache
         cache_.push(feature_chunk);
+        ready_read_condition_.notify_one();
     }
-    ready_read_condition_.notify_one();
+    int32 remained_feature_len =
+        joint_len - num_chunk * frame_chunk_stride_ * dim_;
+    remained_feature_.Resize(remained_feature_len);
+    remained_feature_.CopyFromVec(joint_feature.Range(
+        frame_chunk_stride_ * num_chunk * dim_, remained_feature_len));
     return result;
 }
 
-void Reset() {
-    // std::lock_guard<std::mutex> lock(mutex_);
-    return;
-}
-
 }  // namespace ppspeech
\ No newline at end of file

speechx/speechx/frontend/audio/feature_cache.h

@@ -19,10 +19,18 @@
 
 namespace ppspeech {
 
+struct FeatureCacheOptions {
+    int32 max_size;
+    int32 frame_chunk_size;
+    int32 frame_chunk_stride;
+    FeatureCacheOptions()
+        : max_size(kint16max), frame_chunk_size(1), frame_chunk_stride(1) {}
+};
+
 class FeatureCache : public FrontendInterface {
   public:
     explicit FeatureCache(
-        int32 max_size = kint16max,
+        FeatureCacheOptions opts,
         std::unique_ptr<FrontendInterface> base_extractor = NULL);
 
     // Feed feats or waves
@@ -32,12 +40,15 @@ class FeatureCache : public FrontendInterface {
     virtual bool Read(kaldi::Vector<kaldi::BaseFloat>* feats);
 
     // feat dim
-    virtual size_t Dim() const { return base_extractor_->Dim(); }
+    virtual size_t Dim() const { return dim_; }
 
     virtual void SetFinished() {
+        // std::unique_lock<std::mutex> lock(mutex_);
         base_extractor_->SetFinished();
+        LOG(INFO) << "set finished";
         // read the last chunk data
         Compute();
+        // ready_feed_condition_.notify_one();
     }
 
     virtual bool IsFinished() const { return base_extractor_->IsFinished(); }
@@ -52,9 +63,13 @@ class FeatureCache : public FrontendInterface {
   private:
     bool Compute();
 
+    int32 dim_;
     size_t max_size_;
-    std::unique_ptr<FrontendInterface> base_extractor_;
+    int32 frame_chunk_size_;
+    int32 frame_chunk_stride_;
 
+    kaldi::Vector<kaldi::BaseFloat> remained_feature_;
+    std::unique_ptr<FrontendInterface> base_extractor_;
     std::mutex mutex_;
     std::queue<kaldi::Vector<BaseFloat>> cache_;
     std::condition_variable ready_feed_condition_;

speechx/speechx/frontend/audio/feature_pipeline.cc

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "frontend/audio/feature_pipeline.h"
+
+namespace ppspeech {
+
+using std::unique_ptr;
+
+FeaturePipeline::FeaturePipeline(const FeaturePipelineOptions& opts) {
+    unique_ptr<FrontendInterface> data_source(
+        new ppspeech::AudioCache(1000 * kint16max, opts.convert2PCM32));
+
+    unique_ptr<FrontendInterface> linear_spectrogram(
+        new ppspeech::LinearSpectrogram(opts.linear_spectrogram_opts,
+                                        std::move(data_source)));
+
+    unique_ptr<FrontendInterface> cmvn(
+        new ppspeech::CMVN(opts.cmvn_file, std::move(linear_spectrogram)));
+
+    base_extractor_.reset(
+        new ppspeech::FeatureCache(opts.feature_cache_opts, std::move(cmvn)));
+}
+
+}  // ppspeech
\ No newline at end of file

speechx/speechx/frontend/audio/feature_pipeline.h

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// todo refactor later (SGoat)
+
+#pragma once
+
+#include "frontend/audio/audio_cache.h"
+#include "frontend/audio/data_cache.h"
+#include "frontend/audio/feature_cache.h"
+#include "frontend/audio/frontend_itf.h"
+#include "frontend/audio/linear_spectrogram.h"
+#include "frontend/audio/normalizer.h"
+
+namespace ppspeech {
+
+struct FeaturePipelineOptions {
+    std::string cmvn_file;
+    bool convert2PCM32;
+    LinearSpectrogramOptions linear_spectrogram_opts;
+    FeatureCacheOptions feature_cache_opts;
+    FeaturePipelineOptions()
+        : cmvn_file(""),
+          convert2PCM32(false),
+          linear_spectrogram_opts(),
+          feature_cache_opts() {}
+};
+
+class FeaturePipeline : public FrontendInterface {
+  public:
+    explicit FeaturePipeline(const FeaturePipelineOptions& opts);
+    virtual void Accept(const kaldi::VectorBase<kaldi::BaseFloat>& waves) {
+        base_extractor_->Accept(waves);
+    }
+    virtual bool Read(kaldi::Vector<kaldi::BaseFloat>* feats) {
+        return base_extractor_->Read(feats);
+    }
+    virtual size_t Dim() const { return base_extractor_->Dim(); }
+    virtual void SetFinished() { base_extractor_->SetFinished(); }
+    virtual bool IsFinished() const { return base_extractor_->IsFinished(); }
+    virtual void Reset() { base_extractor_->Reset(); }
+
+  private:
+    std::unique_ptr<FrontendInterface> base_extractor_;
+};
+}
\ No newline at end of file

speechx/speechx/frontend/audio/linear_spectrogram.cc

@@ -52,16 +52,16 @@ bool LinearSpectrogram::Read(Vector<BaseFloat>* feats) {
     if (flag == false || input_feats.Dim() == 0) return false;
 
     int32 feat_len = input_feats.Dim();
-    int32 left_len = reminded_wav_.Dim();
+    int32 left_len = remained_wav_.Dim();
     Vector<BaseFloat> waves(feat_len + left_len);
-    waves.Range(0, left_len).CopyFromVec(reminded_wav_);
+    waves.Range(0, left_len).CopyFromVec(remained_wav_);
     waves.Range(left_len, feat_len).CopyFromVec(input_feats);
     Compute(waves, feats);
     int32 frame_shift = opts_.frame_opts.WindowShift();
     int32 num_frames = kaldi::NumFrames(waves.Dim(), opts_.frame_opts);
     int32 left_samples = waves.Dim() - frame_shift * num_frames;
-    reminded_wav_.Resize(left_samples);
-    reminded_wav_.CopyFromVec(
+    remained_wav_.Resize(left_samples);
+    remained_wav_.CopyFromVec(
         waves.Range(frame_shift * num_frames, left_samples));
     return true;
 }

speechx/speechx/frontend/audio/linear_spectrogram.h

@@ -25,12 +25,12 @@ struct LinearSpectrogramOptions {
     kaldi::FrameExtractionOptions frame_opts;
     kaldi::BaseFloat streaming_chunk;  // second
 
-    LinearSpectrogramOptions() : streaming_chunk(0.36), frame_opts() {}
+    LinearSpectrogramOptions() : streaming_chunk(0.1), frame_opts() {}
 
     void Register(kaldi::OptionsItf* opts) {
         opts->Register("streaming-chunk",
                        &streaming_chunk,
-                       "streaming chunk size, default: 0.36 sec");
+                       "streaming chunk size, default: 0.1 sec");
         frame_opts.Register(opts);
     }
 };
@@ -48,7 +48,7 @@ class LinearSpectrogram : public FrontendInterface {
     virtual bool IsFinished() const { return base_extractor_->IsFinished(); }
     virtual void Reset() {
         base_extractor_->Reset();
-        reminded_wav_.Resize(0);
+        remained_wav_.Resize(0);
     }
 
   private:
@@ -60,7 +60,7 @@ class LinearSpectrogram : public FrontendInterface {
     kaldi::BaseFloat hanning_window_energy_;
     LinearSpectrogramOptions opts_;
     std::unique_ptr<FrontendInterface> base_extractor_;
-    kaldi::Vector<kaldi::BaseFloat> reminded_wav_;
+    kaldi::Vector<kaldi::BaseFloat> remained_wav_;
     int chunk_sample_size_;
     DISALLOW_COPY_AND_ASSIGN(LinearSpectrogram);
 };

speechx/speechx/nnet/decodable.cc

@@ -78,7 +78,6 @@ bool Decodable::AdvanceChunk() {
     }
     int32 nnet_dim = 0;
     Vector<BaseFloat> inferences;
-    Matrix<BaseFloat> nnet_cache_tmp;
     nnet_->FeedForward(features, frontend_->Dim(), &inferences, &nnet_dim);
     nnet_cache_.Resize(inferences.Dim() / nnet_dim, nnet_dim);
     nnet_cache_.CopyRowsFromVec(inferences);