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================================================================================
DeepStream SDK Python Bindings
================================================================================
Setup pre-requisites:
- Ubuntu 18.04
- DeepStream SDK 4.0.1
- Python 3
- Gst-python

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Package Contents
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The DeepStream Python package includes:
1. Python bindings for DeepStream Metadata libraries
   These bindings are provided as a compiled module, available for
   x86_64 and Jetson platforms. Find them at:
   bindings
      |- x86_64
      |     |- pyds.so
      |- jetson
            |- pyds.so
2. DeepStream test apps in Python
   Four test apps are available:
   deepstream-test1/deepstream_test_1.py
   deepstream-test2/deepstream_test_2.py
   deepstream-test3/deepstream_test_3.py
   deepstream-test3/deepstream_test_4.py

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Installing Pre-requisites:
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DeepStream SDK 4.0.1
--------------------
Download and install from https://developer.nvidia.com/deepstream-download

Python 3
----------
Should be already installed with Ubuntu 18.04

Gst-python
----------
Should be already installed on Jetson
If missing, install with the following steps:
   $ sudo apt-get install python-gi-dev
   $ export GST_LIBS="-lgstreamer-1.0 -lgobject-2.0 -lglib-2.0"
   $ export GST_CFLAGS="-pthread -I/usr/include/gstreamer-1.0 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include"
   $ git clone https://github.com/GStreamer/gst-python.git
   $ cd gst-python
   $ git checkout 1a8f48a
   $ ./autogen.sh PYTHON=python3
   $ ./configure PYTHON=python3
   $ make
   $ sudo make install

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Running the samples
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The apps are configured to work from inside the DeepStream SDK 4.0.1 installation.
Untar the contents into <DeepStream install root>/sources/.

Note that the apps import the pyds module from this relative path:
../bindings/<platform>

Follow README in each app's directory to run the app.

Example: running test1 app:
$ cd deepstream-test1
$ python3 deepstream_test_1.py <input .h264 file>

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Notes:
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As with DeepStream SDK, if the application runs into errors, cannot create gst elements, 
try again after removing gstreamer cache
   rm ${HOME}/.cache/gstreamer-1.0/registry.x86_64.bin