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#!/usr/bin/env python3
import sys, time
import ctypes
from soda_api_pb2 import ExtendedSodaConfigMsg, SodaResponse, SodaRecognitionResult
CHANNEL_COUNT = 1
SAMPLE_RATE = 16000
CHUNK_SIZE = 2048 # 2 chunks per frame, a frame is a single s16
CALLBACK = ctypes.CFUNCTYPE(None, ctypes.POINTER(ctypes.c_byte), ctypes.c_int, ctypes.c_void_p)
class SodaConfig(ctypes.Structure):
_fields_ = [('soda_config', ctypes.c_char_p),
('soda_config_size', ctypes.c_int),
('callback', CALLBACK),
('callback_handle', ctypes.c_void_p)]
class SodaClient():
def __init__(self, callback=None):
self.sodalib = ctypes.CDLL('./libsoda.so')
if callback == None:
callback = CALLBACK(self.resultHandler)
else:
callback = CALLBACK(callback)
cfg_proto = ExtendedSodaConfigMsg()
cfg_proto.channel_count = CHANNEL_COUNT
cfg_proto.sample_rate = SAMPLE_RATE
cfg_proto.api_key = 'ce04d119-129f-404e-b4fe-6b913fffb6cb' # "ce04d119-129f-404e-b4fe-6b913fffb6cb"
cfg_proto.language_pack_directory = './SODAModels/'
cfg_serialized = cfg_proto.SerializeToString()
self.config = SodaConfig(cfg_serialized, len(cfg_serialized), callback, None)
self.sodalib.CreateExtendedSodaAsync.restype = ctypes.c_void_p
def start(self):
self.handle = ctypes.c_void_p(self.sodalib.CreateExtendedSodaAsync(self.config))
self.sodalib.ExtendedSodaStart(self.handle)
with open('60s.wav', "rb") as f: # sys.argv[1] file name from parameter
chunk = f.read(CHUNK_SIZE)
while chunk:
self.sodalib.ExtendedAddAudio(self.handle, chunk, len(chunk))
time.sleep(0.15) # emulate stream-delay, adjust to fit your need
chunk= f.read(CHUNK_SIZE)
print("\n\n")
def delete(self):
self.sodalib.DeleteExtendedSodaAsync(self.handle)
def resultHandler(self, response, rlen, instance):
res = SodaResponse()
res.ParseFromString(ctypes.string_at(response, rlen))
if res.soda_type == SodaResponse.SodaMessageType.RECOGNITION:
if res.recognition_result.result_type == SodaRecognitionResult.ResultType.FINAL:
print(f'* {res.recognition_result.hypothesis[0]}')
elif res.recognition_result.result_type == SodaRecognitionResult.ResultType.PARTIAL:
print(f'* {res.recognition_result.hypothesis[0]}', end='\r')
if __name__ == '__main__':
client = SodaClient()
try:
client.start()
except KeyboardInterrupt:
client.delete() |