add example of grpc client

funasr/runtime/grpc/Readme.md

@@ -55,3 +55,63 @@ Usage: ./cmake/build/paraformer_server port thread_num /path/to/model_file quant
 cd ../python/grpc
 python grpc_main_client_mic.py  --host $server_ip --port 10108
 ```
+The `grpc_main_client_mic.py` follows the [original design] (https://github.com/alibaba-damo-academy/FunASR/tree/main/funasr/runtime/python/grpc#workflow-in-desgin) by sending audio_data with chunks. If you want to send audio_data in one request, here is an example:
+
+```
+# go to ../python/grpc to find this package
+import paraformer_pb2
+
+
+class RecognizeStub:
+    def __init__(self, channel):
+        self.Recognize = channel.stream_stream(
+                '/paraformer.ASR/Recognize',
+                request_serializer=paraformer_pb2.Request.SerializeToString,
+                response_deserializer=paraformer_pb2.Response.FromString,
+                )
+
+
+async def send(channel, data, speaking, isEnd):
+    stub = RecognizeStub(channel)
+    req = paraformer_pb2.Request()
+    if data:
+        req.audio_data = data
+    req.user = 'zz'
+    req.language = 'zh-CN'
+    req.speaking = speaking
+    req.isEnd = isEnd
+    q = queue.SimpleQueue()
+    q.put(req)
+    return stub.Recognize(iter(q.get, None))
+
+# send the audio data once
+async def grpc_rec(data, grpc_uri):
+    with grpc.insecure_channel(grpc_uri) as channel:
+        b = time.time()
+        response = await send(channel, data, False, False)
+        resp = response.next()
+        text = ''
+        if 'decoding' == resp.action:
+            resp = response.next()
+            if 'finish' == resp.action:
+                text = json.loads(resp.sentence)['text']
+        response = await send(channel, None, False, True)
+        return {
+                'text': text,
+                'time': time.time() - b,
+                }
+
+async def test():
+    # fc = FunAsrGrpcClient('127.0.0.1', 9900)
+    # t = await fc.rec(wav.tobytes())
+    # print(t)
+    wav, _ = sf.read('z-10s.wav', dtype='int16')
+    uri = '127.0.0.1:9900'
+    res = await grpc_rec(wav.tobytes(), uri)
+    print(res)
+
+
+if __name__ == '__main__':
+    asyncio.run(test())
+
+```