fix speechx core dump when stop immediately after start

paddlespeech/cli/cls/infer.py

@@ -21,6 +21,8 @@ from typing import Union
 import numpy as np
 import paddle
 import yaml
+from paddleaudio import load
+from paddleaudio.features import LogMelSpectrogram
 
 from ..executor import BaseExecutor
 from ..log import logger
@@ -28,8 +30,6 @@ from ..utils import cli_register
 from ..utils import stats_wrapper
 from .pretrained_models import model_alias
 from .pretrained_models import pretrained_models
-from paddleaudio import load
-from paddleaudio.features import LogMelSpectrogram
 from paddlespeech.s2t.utils.dynamic_import import dynamic_import
 
 __all__ = ['CLSExecutor']

paddlespeech/s2t/__init__.py

@@ -325,7 +325,6 @@ if not hasattr(paddle.Tensor, 'type_as'):
     setattr(paddle.static.Variable, 'type_as', type_as)
 
 
-
 def to(x: paddle.Tensor, *args, **kwargs) -> paddle.Tensor:
     assert len(args) == 1
     if isinstance(args[0], str):  # dtype
@@ -372,7 +371,6 @@ if not hasattr(paddle.Tensor, 'tolist'):
         "register user tolist to paddle.Tensor, remove this when fixed!")
     setattr(paddle.Tensor, 'tolist', tolist)
     setattr(paddle.static.Variable, 'tolist', tolist)
-    
 
 ########### hack paddle.nn #############
 from paddle.nn import Layer

paddlespeech/server/bin/paddlespeech_client.py

@@ -521,4 +521,4 @@ class TextClientExecutor(BaseExecutor):
         res = requests.post(url=url, data=json.dumps(request))
         response_dict = res.json()
         punc_text = response_dict["result"]["punc_text"]
-        return punc_text
\ No newline at end of file
+        return punc_text

paddlespeech/server/utils/audio_handler.py

@@ -91,8 +91,7 @@ class ASRWsAudioHandler:
         if url is None or port is None or endpoint is None:
             self.url = None
         else:
-            self.url = "ws://" + self.url + ":" + str(
-                self.port) + endpoint
+            self.url = "ws://" + self.url + ":" + str(self.port) + endpoint
         self.punc_server = TextHttpHandler(punc_server_ip, punc_server_port)
         logger.info(f"endpoint: {self.url}")
 
@@ -139,8 +138,7 @@ class ASRWsAudioHandler:
         logging.info("send a message to the server")
 
         if self.url is None:
-            logger.error(
-                "No asr server, please input valid ip and port")
+            logger.error("No asr server, please input valid ip and port")
             return ""
 
         # 1. send websocket handshake protocal
@@ -167,8 +165,7 @@ class ASRWsAudioHandler:
                 msg = json.loads(msg)
 
                 if self.punc_server and len(msg["result"]) > 0:
-                    msg["result"] = self.punc_server.run(
-                        msg["result"])
+                    msg["result"] = self.punc_server.run(msg["result"])
                 logger.info("client receive msg={}".format(msg))
 
             # 4. we must send finished signal to the server
@@ -189,7 +186,7 @@ class ASRWsAudioHandler:
 
             if self.punc_server:
                 msg["result"] = self.punc_server.run(msg["result"])
-      
+
             logger.info("client final receive msg={}".format(msg))
             result = msg
 

speechx/speechx/decoder/ctc_tlg_decoder.cc

@@ -48,6 +48,12 @@ void TLGDecoder::Reset() {
 }
 
 std::string TLGDecoder::GetFinalBestPath() {
+    if (frame_decoded_size_ == 0) {
+        // Assertion failed: (this->NumFramesDecoded() > 0 && "You cannot call
+        // BestPathEnd if no frames were decoded.")
+        return std::string("");
+    }
+
     decoder_->FinalizeDecoding();
     kaldi::Lattice lat;
     kaldi::LatticeWeight weight;

speechx/speechx/websocket/websocket_server.cc

@@ -27,21 +27,22 @@ ConnectionHandler::ConnectionHandler(
     : ws_(std::move(socket)), recognizer_resource_(recognizer_resource) {}
 
 void ConnectionHandler::OnSpeechStart() {
-    LOG(INFO) << "Server: Recieved speech start signal, start reading speech";
-    got_start_tag_ = true;
-    json::value rv = {{"status", "ok"}, {"type", "server_ready"}};
-    ws_.text(true);
-    ws_.write(asio::buffer(json::serialize(rv)));
     recognizer_ = std::make_shared<Recognizer>(recognizer_resource_);
     // Start decoder thread
     decode_thread_ = std::make_shared<std::thread>(
         &ConnectionHandler::DecodeThreadFunc, this);
+    got_start_tag_ = true;
+    LOG(INFO) << "Server: Recieved speech start signal, start reading speech";
+    json::value rv = {{"status", "ok"}, {"type", "server_ready"}};
+    ws_.text(true);
+    ws_.write(asio::buffer(json::serialize(rv)));
 }
 
 void ConnectionHandler::OnSpeechEnd() {
     LOG(INFO) << "Server: Recieved speech end signal";
-    CHECK(recognizer_ != nullptr);
-    recognizer_->SetFinished();
+    if (recognizer_ != nullptr) {
+        recognizer_->SetFinished();
+    }
     got_end_tag_ = true;
 }
 
@@ -158,7 +159,7 @@ void ConnectionHandler::operator()() {
             }
         }
 
-        LOG(INFO) << "Server: Read all pcm data, wait for decoding thread";
+        LOG(INFO) << "Server: finished to wait for decoding thread join.";
         if (decode_thread_ != nullptr) {
             decode_thread_->join();
         }