Add LVA client (#42)

Add LVA test client

samples/lva_ai_extension/README.md

@@ -55,10 +55,7 @@ $ docker logs video-analytics-serving-lva-ai-extension_latest -f
 ```
 
 ## Test Client
-The test client script `run_client.sh` sends frames(s) to the extension server.
-> The above mentioned test client script is not available in GitHub at this time. We may include it in future. If you try to use it, you will get this error:
->> python3: can't open file '/home/video-analytics-serving/samples/lva_ai_extension/client': [Errno 2] No such file or directory
-
+The test client script `run_client.sh` sends frames(s) to the extension server and prints inference results.
 Use the --help option to see how to use the script. All arguments are optional.
 
 ```

samples/lva_ai_extension/client/__main__.py

@@ -0,0 +1,83 @@
+'''
+* Copyright (C) 2019-2020 Intel Corporation.
+*
+* SPDX-License-Identifier: MIT License
+'''
+
+'''
+* MIT License
+*
+* Copyright (c) Microsoft Corporation.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all
+* copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE
+'''
+
+import sys
+
+import logging
+import os
+from media_stream_processor import MediaStreamProcessor
+from arguments import parse_args
+from samples.lva_ai_extension.common.exception_handler import log_exception
+
+def _log_options(args):
+    heading = "Options for {}".format(os.path.basename(__file__))
+    banner = "="*len(heading)
+    logging.info(banner)
+    logging.info(heading)
+    logging.info(banner)
+    for arg in vars(args):
+        logging.info("{} == {}".format(arg, getattr(args, arg)))
+        logging.info(banner)
+
+
+def main():
+    try:
+        # Get application arguments
+        args = parse_args()
+
+        _log_options(args)
+
+        # Run stream processer loop
+        msp = MediaStreamProcessor(args.grpc_server_address,
+                                   args.sample_file,
+                                   args.loop_count,
+                                   args.use_shared_memory)
+        msp.start()
+
+    except:
+        log_exception()
+        exit(-1)
+
+if __name__ == "__main__":
+    # Set logging parameters
+    logging.basicConfig(
+        level=logging.INFO,
+        format='[AIXC] [%(asctime)-15s] [%(threadName)-12.12s] [%(levelname)s]: %(message)s',
+        handlers=[
+            #logging.FileHandler(LOG_FILE_NAME),     # write in a log file
+            logging.StreamHandler(sys.stdout)       # write in stdout
+        ]
+    )
+
+    # Call Main logic
+    main()
+
+    logging.info('Client finished execution')
+

samples/lva_ai_extension/client/arguments.py

@@ -0,0 +1,70 @@
+'''
+* Copyright (C) 2019-2020 Intel Corporation.
+*
+* SPDX-License-Identifier: MIT License
+'''
+
+'''
+* MIT License
+*
+* Copyright (c) Microsoft Corporation.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all
+* copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+* SOFTWARE
+'''
+
+import argparse
+from enum import Enum
+
+def parse_args(args=None, program_name="AI Extension Sample Client"):
+    parser = argparse.ArgumentParser(prog=program_name,fromfile_prefix_chars='@',
+                                     formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+
+
+    parser.add_argument('-s', metavar=('grpc_server_address'),
+                        dest = "grpc_server_address",
+                        help='gRPC server address.',
+                        default="localhost:5001")
+
+    parser.add_argument('-f', metavar=('sample_file'),
+                        dest = "sample_file",
+                        help='Name of the sample video frame.',
+                        default="/home/video-analytics-serving/samples/lva_ai_extension/sampleframes/sample01.png"
+    )
+
+    parser.add_argument('-l', metavar=('loop_count'),
+                        dest = "loop_count",
+                        help='How many times to send sample video frame.',
+                        type=int,
+                        default = 1)
+
+    parser.add_argument('-m', action='store_const',
+                        dest='use_shared_memory',
+                        const=True,
+                        default=False,
+                        help='set to use shared memory')
+
+    parser.add_argument('--version', action='version', version='%(prog)s 1.0')
+
+    if (isinstance(args, dict)):
+        args = ["--{}={}".format(key, value)
+                for key, value in args.items() if value]
+
+    return parser.parse_args(args)
+
+