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pipeline_with_custom_component.py
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pipeline_with_custom_component.py
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################################################################################
# The MIT License
#
# Copyright (c) 2024, Prominence AI, Inc.
#
# 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.
################################################################################
################################################################################
#
# The example demonstrates how to create a custom DSL Pipeline Component with
# a custom GStreamer (GST) Element.
#
# Elements are constructed from plugins installed with GStreamer or
# using your own proprietary -- with a call to
#
# dsl_gst_element_new('my-element', 'my-plugin-factory-name' )
#
# IMPORTANT! All DSL Pipeline Components, intrinsic and custom, include
# a queue element to create a new thread boundary for the component's element(s)
# to process in.
#
# This example creates a simple Custom Component with two elements
# 1. The built-in 'queue' plugin - to create a new thread boundary.
# 2. An 'identity' plugin - a GST debug plugin to mimic our proprietary element.
#
# A single GST Element can be added to the Component on creation by calling
#
# dsl_component_custom_new_element_add('my-custom-component',
# 'my-element')
#
# Multiple elements can be added to a Component on creation be calling
#
# dsl_component_custom_new_element_add_many('my-bin',
# ['my-element-1', 'my-element-2', None])
#
# https://github.com/prominenceai/deepstream-services-library/tree/master/docs/api-gst.md
# https://github.com/prominenceai/deepstream-services-library/tree/master/docs/api-component.md
#
################################################################################
#!/usr/bin/env python
import sys
from dsl import *
# Import NVIDIA's pyds Pad Probe Handler example
from nvidia_pyds_pad_probe_handler import custom_pad_probe_handler
uri_file = "/opt/nvidia/deepstream/deepstream/samples/streams/sample_1080p_h264.mp4"
# Filespecs (Jetson and dGPU) for the Primary GIE
primary_infer_config_file = \
'/opt/nvidia/deepstream/deepstream/samples/configs/deepstream-app/config_infer_primary.txt'
primary_model_engine_file = \
'/opt/nvidia/deepstream/deepstream/samples/models/Primary_Detector/resnet18_trafficcamnet.etlt_b8_gpu0_int8.engine'
# Filespec for the IOU Tracker config file
iou_tracker_config_file = \
'/opt/nvidia/deepstream/deepstream/samples/configs/deepstream-app/config_tracker_IOU.yml'
TILER_WIDTH = 1280
TILER_HEIGHT = 720
WINDOW_WIDTH = 1280
WINDOW_HEIGHT = 720
##
# Function to be called on XWindow KeyRelease event
##
def xwindow_key_event_handler(key_string, client_data):
print('key released = ', key_string)
if key_string.upper() == 'P':
dsl_pipeline_pause('pipeline')
elif key_string.upper() == 'R':
dsl_pipeline_play('pipeline')
elif key_string.upper() == 'Q' or key_string == '' or key_string == '':
dsl_pipeline_stop('pipeline')
dsl_main_loop_quit()
##
# Function to be called on XWindow Delete event
##
def xwindow_delete_event_handler(client_data):
print('delete window event')
dsl_pipeline_stop('pipeline')
dsl_main_loop_quit()
##
# Function to be called on End-of-Stream (EOS) event
##
def eos_event_listener(client_data):
print('Pipeline EOS event')
dsl_pipeline_stop('pipeline')
dsl_main_loop_quit()
##
# Function to be called on every change of Pipeline state
##
def state_change_listener(old_state, new_state, client_data):
print('previous state = ', old_state, ', new state = ', new_state)
if new_state == DSL_STATE_PLAYING:
dsl_pipeline_dump_to_dot('pipeline', "state-playing")
def main(args):
while True:
# ---------------------------------------------------------------------------
# Custom DSL Pipeline Component, using the GStreamer "identify" plugin
# as an example. Any GStreamer or proprietary plugin (with limitations)
# can be used to create a custom component. See the GST API reference for
# more details.
# https://github.com/prominenceai/deepstream-services-library/tree/master/docs/api-gst.md
# Create a new element from the identity plugin
retval = dsl_gst_element_new('identity-element', factory_name='identity')
if retval != DSL_RETURN_SUCCESS:
break
# Create a new Custom Component and adds the elements to it. If multple
# elements they will be linked in the order they're added.
retval = dsl_component_custom_new_element_add('identity-bin',
'identity-element')
if retval != DSL_RETURN_SUCCESS:
break
# IMPORTANT! Pad Probe handlers can be added to any sink or src pad of
# any GST Element.
# New Custom Pad Probe Handler to call Nvidia's example callback
# for handling the Batched Meta Data
retval = dsl_pph_custom_new('custom-pph',
client_handler=custom_pad_probe_handler, client_data=None)
# Add the custom PPH to the Src pad (output) of the identity-element
retval = dsl_gst_element_pph_add('identity-element',
handler='custom-pph', pad=DSL_PAD_SRC)
if retval != DSL_RETURN_SUCCESS:
break
# ---------------------------------------------------------------------------
# Create the remaining pipeline components
# New URI File Source using the filespec defined above
retval = dsl_source_file_new('uri-source', uri_file, False)
if retval != DSL_RETURN_SUCCESS:
break
# New Primary GIE using the filespecs above with interval = 0
retval = dsl_infer_gie_primary_new('primary-gie',
primary_infer_config_file, primary_model_engine_file, 0)
if retval != DSL_RETURN_SUCCESS:
break
# New IOU Tracker, setting operational width and hieght
retval = dsl_tracker_new('iou-tracker', iou_tracker_config_file, 480, 272)
if retval != DSL_RETURN_SUCCESS:
break
# New OSD with text, clock and bbox display all enabled.
retval = dsl_osd_new('on-screen-display',
text_enabled=True, clock_enabled=False,
bbox_enabled=True, mask_enabled=False)
if retval != DSL_RETURN_SUCCESS:
break
# New Window Sink, 0 x/y offsets and dimensions defined above.
retval = dsl_sink_window_egl_new('egl-sink', 0, 0,
WINDOW_WIDTH, WINDOW_HEIGHT)
if retval != DSL_RETURN_SUCCESS:
break
# Add the XWindow event handler functions defined above
retval = dsl_sink_window_key_event_handler_add('egl-sink',
xwindow_key_event_handler, None)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_sink_window_delete_event_handler_add('egl-sink',
xwindow_delete_event_handler, None)
if retval != DSL_RETURN_SUCCESS:
break
# Add all the components to our pipeline
retval = dsl_pipeline_new_component_add_many('pipeline',
['uri-source', 'primary-gie', 'iou-tracker', 'identity-bin',
'on-screen-display', 'egl-sink', None])
if retval != DSL_RETURN_SUCCESS:
break
## Add the listener callback functions defined above
retval = dsl_pipeline_state_change_listener_add('pipeline',
state_change_listener, None)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_pipeline_eos_listener_add('pipeline', eos_event_listener, None)
if retval != DSL_RETURN_SUCCESS:
break
# Play the pipeline
retval = dsl_pipeline_play('pipeline')
if retval != DSL_RETURN_SUCCESS:
break
dsl_main_loop_run()
retval = DSL_RETURN_SUCCESS
break
# Print out the final result
print(dsl_return_value_to_string(retval))
dsl_delete_all()
if __name__ == '__main__':
sys.exit(main(sys.argv))