MLECO-2493 Add python OD example with TFLite delegate

Signed-off-by: Raviv Shalev <raviv.shalev@arm.com>
Change-Id: I25fcccbf912be0c5bd4fbfd2e97552341958af35
diff --git a/python/pyarmnn/examples/tests/conftest.py b/python/pyarmnn/examples/tests/conftest.py
index b7fa73b..4f1ac5f 100644
--- a/python/pyarmnn/examples/tests/conftest.py
+++ b/python/pyarmnn/examples/tests/conftest.py
@@ -20,20 +20,38 @@
     data_dir = os.path.join(script_dir, "testdata")
     if not os.path.exists(data_dir):
         os.mkdir(data_dir)
+
+    sys_arch = os.uname().machine
+    if sys_arch == "x86_64":
+        libarmnn_url = "https://github.com/ARM-software/armnn/releases/download/v21.11/ArmNN-linux-x86_64.tar.gz"
+    else:
+        libarmnn_url = "https://github.com/ARM-software/armnn/releases/download/v21.11/ArmNN-linux-aarch64.tar.gz"
+
+
     files_to_download = ["https://raw.githubusercontent.com/opencv/opencv/4.0.0/samples/data/messi5.jpg",
                          "https://raw.githubusercontent.com/opencv/opencv/4.0.0/samples/data/basketball1.png",
                          "https://raw.githubusercontent.com/opencv/opencv/4.0.0/samples/data/Megamind.avi",
                          "https://github.com/ARM-software/ML-zoo/raw/master/models/object_detection/ssd_mobilenet_v1/tflite_uint8/ssd_mobilenet_v1.tflite",
                          "https://git.mlplatform.org/ml/ethos-u/ml-embedded-evaluation-kit.git/plain/resources/kws/samples/yes.wav",
-                         "https://raw.githubusercontent.com/Azure-Samples/cognitive-services-speech-sdk/master/sampledata/audiofiles/myVoiceIsMyPassportVerifyMe04.wav"
+                         "https://raw.githubusercontent.com/Azure-Samples/cognitive-services-speech-sdk/master/sampledata/audiofiles/myVoiceIsMyPassportVerifyMe04.wav",
+                         "https://tfhub.dev/google/lite-model/magenta/arbitrary-image-stylization-v1-256/int8/prediction/1?lite-format=tflite",
+                         "https://tfhub.dev/google/lite-model/magenta/arbitrary-image-stylization-v1-256/int8/transfer/1?lite-format=tflite",
+                         libarmnn_url
                          ]
 
     for file in files_to_download:
         path, filename = ntpath.split(file)
+        if filename == '1?lite-format=tflite' and 'prediction' in file:
+            filename = 'style_predict.tflite'
+        elif filename == '1?lite-format=tflite' and 'transfer' in file:
+            filename = 'style_transfer.tflite'
         file_path = os.path.join(data_dir, filename)
         if not os.path.exists(file_path):
             print("\nDownloading test file: " + file_path + "\n")
             urllib.request.urlretrieve(file, file_path)
 
+    path, filename = ntpath.split(libarmnn_url)
+    file_path = os.path.join(data_dir, filename)
+    os.system(f"tar -xvzf {file_path} -C {data_dir} ")
 
     return data_dir