code format, test=doc

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

@@ -27,6 +27,7 @@ from paddlespeech.s2t.frontend.speech import SpeechSegment
 from paddlespeech.s2t.modules.ctc import CTCDecoder
 from paddlespeech.s2t.utils.utility import UpdateConfig
 from paddlespeech.server.engine.base_engine import BaseEngine
+from paddlespeech.server.utils.audio_process import pcm2float
 from paddlespeech.server.utils.paddle_predictor import init_predictor
 
 __all__ = ['ASREngine']
@@ -222,21 +223,6 @@ class ASRServerExecutor(ASRExecutor):
         else:
             raise Exception("invalid model name")
 
-    def _pcm16to32(self, audio):
-        """pcm int16 to float32
-
-        Args:
-            audio(numpy.array): numpy.int16
-
-        Returns:
-            audio(numpy.array): numpy.float32
-        """
-        if audio.dtype == np.int16:
-            audio = audio.astype("float32")
-            bits = np.iinfo(np.int16).bits
-            audio = audio / (2**(bits - 1))
-        return audio
-
     def extract_feat(self, samples, sample_rate):
         """extract feat
 
@@ -249,7 +235,7 @@ class ASRServerExecutor(ASRExecutor):
             x_chunk_lens (numpy.array): shape[B]
         """
         # pcm16 -> pcm 32
-        samples = self._pcm16to32(samples)
+        samples = pcm2float(samples)
 
         # read audio
         speech_segment = SpeechSegment.from_pcm(

paddlespeech/server/engine/tts/online/tts_engine.py

@@ -12,29 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import base64
-import io
 import time
 
-import librosa
 import numpy as np
 import paddle
-import soundfile as sf
-from scipy.io import wavfile
 
 from paddlespeech.cli.log import logger
 from paddlespeech.cli.tts.infer import TTSExecutor
 from paddlespeech.server.engine.base_engine import BaseEngine
-from paddlespeech.server.utils.audio_process import change_speed
-from paddlespeech.server.utils.errors import ErrorCode
-from paddlespeech.server.utils.exception import ServerBaseException
 from paddlespeech.server.utils.audio_process import float2pcm
-from paddlespeech.server.utils.config import get_config
-from paddlespeech.server.utils.util import denorm
 from paddlespeech.server.utils.util import get_chunks
 
-
-import math
-
 __all__ = ['TTSEngine']
 
 
@@ -44,7 +32,8 @@ class TTSServerExecutor(TTSExecutor):
         pass
 
     @paddle.no_grad()
-    def infer(self,
+    def infer(
+            self,
             text: str,
             lang: str='zh',
             am: str='fastspeech2_csmsc',
@@ -61,8 +50,6 @@ class TTSServerExecutor(TTSExecutor):
         get_tone_ids = False
         merge_sentences = False
         frontend_st = time.time()
-        if am_name == 'speedyspeech':
-            get_tone_ids = True
         if lang == 'zh':
             input_ids = self.frontend.get_input_ids(
                 text,
@@ -110,10 +97,12 @@ class TTSServerExecutor(TTSExecutor):
                 elif i == chunk_num - 1:
                     sub_wav = sub_wav[front_pad * voc_upsample:]
                 else:
-                    sub_wav = sub_wav[front_pad * voc_upsample: (front_pad + voc_block) * voc_upsample]
+                    sub_wav = sub_wav[front_pad * voc_upsample:(
+                        front_pad + voc_block) * voc_upsample]
 
                 yield sub_wav
 
+
 class TTSEngine(BaseEngine):
     """TTS server engine
 
@@ -128,9 +117,11 @@ class TTSEngine(BaseEngine):
 
     def init(self, config: dict) -> bool:
         self.executor = TTSServerExecutor()
-
-        try:
         self.config = config
+        assert "fastspeech2_csmsc" in config.am and (
+            config.voc == "hifigan_csmsc-zh" or config.voc == "mb_melgan_csmsc"
+        ), 'Please check config, am support: fastspeech2, voc support: hifigan_csmsc-zh or mb_melgan_csmsc.'
+        try:
             if self.config.device:
                 self.device = self.config.device
             else:
@@ -181,81 +172,6 @@ class TTSEngine(BaseEngine):
 
         return text
 
-    def postprocess(self,
-                    wav,
-                    original_fs: int,
-                    target_fs: int=0,
-                    volume: float=1.0,
-                    speed: float=1.0,
-                    audio_path: str=None):
-        """Post-processing operations, including speech, volume, sample rate, save audio file
-
-        Args:
-            wav (numpy(float)): Synthesized audio sample points
-            original_fs (int): original audio sample rate
-            target_fs (int): target audio sample rate
-            volume (float): target volume
-            speed (float): target speed
-
-        Raises:
-            ServerBaseException: Throws an exception if the change speed unsuccessfully.
-
-        Returns:
-            target_fs: target sample rate for synthesized audio.
-            wav_base64: The base64 format of the synthesized audio.
-        """
-
-        # transform sample_rate
-        if target_fs == 0 or target_fs > original_fs:
-            target_fs = original_fs
-            wav_tar_fs = wav
-            logger.info(
-                "The sample rate of synthesized audio is the same as model, which is {}Hz".
-                format(original_fs))
-        else:
-            wav_tar_fs = librosa.resample(
-                np.squeeze(wav), original_fs, target_fs)
-            logger.info(
-                "The sample rate of model is {}Hz and the target sample rate is {}Hz. Converting the sample rate of the synthesized audio successfully.".
-                format(original_fs, target_fs))
-        # transform volume
-        wav_vol = wav_tar_fs * volume
-        logger.info("Transform the volume of the audio successfully.")
-
-        # transform speed
-        try:  # windows not support soxbindings
-            wav_speed = change_speed(wav_vol, speed, target_fs)
-            logger.info("Transform the speed of the audio successfully.")
-        except ServerBaseException:
-            raise ServerBaseException(
-                ErrorCode.SERVER_INTERNAL_ERR,
-                "Failed to transform speed. Can not install soxbindings on your system. \
-                 You need to set speed value 1.0.")
-        except BaseException:
-            logger.error("Failed to transform speed.")
-
-        # wav to base64
-        buf = io.BytesIO()
-        wavfile.write(buf, target_fs, wav_speed)
-        base64_bytes = base64.b64encode(buf.read())
-        wav_base64 = base64_bytes.decode('utf-8')
-        logger.info("Audio to string successfully.")
-
-        # save audio
-        if audio_path is not None:
-            if audio_path.endswith(".wav"):
-                sf.write(audio_path, wav_speed, target_fs)
-            elif audio_path.endswith(".pcm"):
-                wav_norm = wav_speed * (32767 / max(0.001,
-                                                    np.max(np.abs(wav_speed))))
-                with open(audio_path, "wb") as f:
-                    f.write(wav_norm.astype(np.int16))
-            logger.info("Save audio to {} successfully.".format(audio_path))
-        else:
-            logger.info("There is no need to save audio.")
-
-        return target_fs, wav_base64
-
     def run(self,
             sentence: str,
             spk_id: int=0,
@@ -275,20 +191,22 @@ class TTSEngine(BaseEngine):
             save_path (str, optional): The save path of the synthesized audio. 
             None means do not save audio. Defaults to None.
 
-        Raises:
-            ServerBaseException: Throws an exception if tts inference unsuccessfully.
-            ServerBaseException: Throws an exception if postprocess unsuccessfully.
-
         Returns:
-            lang: model language 
-            target_sample_rate: target sample rate for synthesized audio.
             wav_base64: The base64 format of the synthesized audio.
         """
 
         lang = self.config.lang
         wav_list = []
 
-        for wav in self.executor.infer(text=sentence, lang=lang, am=self.config.am, spk_id=spk_id, am_block=self.am_block, am_pad=self.am_pad, voc_block=self.voc_block, voc_pad=self.voc_pad):
+        for wav in self.executor.infer(
+                text=sentence,
+                lang=lang,
+                am=self.config.am,
+                spk_id=spk_id,
+                am_block=self.am_block,
+                am_pad=self.am_pad,
+                voc_block=self.voc_block,
+                voc_pad=self.voc_pad):
             # wav type: <class 'numpy.ndarray'>  float32, convert to pcm (base64)
             wav = float2pcm(wav)  # float32 to int16
             wav_bytes = wav.tobytes()  # to bytes
@@ -298,8 +216,5 @@ class TTSEngine(BaseEngine):
             yield wav_base64
 
         wav_all = np.concatenate(wav_list, axis=0)
-        logger.info("The durations of audio is: {} s".format(len(wav_all)/self.executor.am_config.fs))
-
-
-
- 
+        logger.info("The durations of audio is: {} s".format(
+            len(wav_all) / self.executor.am_config.fs))

paddlespeech/server/tests/tts/online/ws_client.py

@@ -25,7 +25,7 @@ st = 0.0
 all_bytes = b''
 
 
-class Ws_Param(object):
+class WsParam(object):
     # 初始化
     def __init__(self, text, server="127.0.0.1", port=8090):
         self.server = server
@@ -116,7 +116,7 @@ if __name__ == "__main__":
     print("Sentence to be synthesized: ", args.text)
     print("***************************************")
 
-    wsParam = Ws_Param(text=args.text, server=args.server, port=args.port)
+    wsParam = WsParam(text=args.text, server=args.server, port=args.port)
 
     websocket.enableTrace(False)
     wsUrl = wsParam.create_url()

paddlespeech/server/tests/tts/online/ws_client_playaudio.py

@@ -32,7 +32,7 @@ st = 0.0
 all_bytes = 0.0
 
 
-class Ws_Param(object):
+class WsParam(object):
     # 初始化
     def __init__(self, text, server="127.0.0.1", port=8090):
         self.server = server
@@ -144,7 +144,7 @@ if __name__ == "__main__":
     print("Sentence to be synthesized: ", args.text)
     print("***************************************")
 
-    wsParam = Ws_Param(text=args.text, server=args.server, port=args.port)
+    wsParam = WsParam(text=args.text, server=args.server, port=args.port)
 
     websocket.enableTrace(False)
     wsUrl = wsParam.create_url()

paddlespeech/server/utils/audio_process.py

@@ -126,3 +126,17 @@ def float2pcm(sig, dtype='int16'):
     abs_max = 2**(i.bits - 1)
     offset = i.min + abs_max
     return (sig * abs_max + offset).clip(i.min, i.max).astype(dtype)
+
+
+def pcm2float(data):
+    """pcm int16 to float32
+    Args:
+        audio(numpy.array): numpy.int16
+    Returns:
+        audio(numpy.array): numpy.float32
+    """
+    if data.dtype == np.int16:
+        data = data.astype("float32")
+        bits = np.iinfo(np.int16).bits
+        data = data / (2**(bits - 1))
+    return data

paddlespeech/server/utils/util.py

@@ -35,10 +35,23 @@ def self_check():
 
 
 def denorm(data, mean, std):
+    """stream am model need to denorm
+    """
     return data * std + mean
 
 
 def get_chunks(data, block_size, pad_size, step):
+    """Divide data into multiple chunks
+
+    Args:
+        data (tensor): data
+        block_size (int): [description]
+        pad_size (int): [description]
+        step (str): set "am" or "voc", generate chunk for step am or vocoder(voc)
+
+    Returns:
+        list: chunks list
+    """
     if step == "am":
         data_len = data.shape[1]
     elif step == "voc":

paddlespeech/server/ws/tts_socket.py

@@ -44,11 +44,11 @@ async def websocket_endpoint(websocket: WebSocket):
         sentence = tts_engine.preprocess(text_bese64=text_bese64)
 
         # run
-        wav = tts_engine.run(sentence)
+        wav_generator = tts_engine.run(sentence)
 
         while True:
             try:
-                tts_results = next(wav)
+                tts_results = next(wav_generator)
                 resp = {"status": 1, "audio": tts_results}
                 await websocket.send_json(resp)
                 logger.info("streaming audio...")