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interpipe_single_pipeline_dynamic_switching_between_multiple_sinks.py
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interpipe_single_pipeline_dynamic_switching_between_multiple_sinks.py
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################################################################################
# The MIT License
#
# Copyright (c) 2021-2023, 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.
################################################################################
# ------------------------------------------------------------------------------------
# This example demonstrates interpipe dynamic switching. Four DSL Players
# are created, each with a File Source and Interpipe Sink. A single
# inference Pipeline with an Interpipe Source is created as the single listener
#
# The Interpipe Source's "listen_to" setting is updated based on keyboard input.
# The xwindow_key_event_handler (see below) is added to the Pipeline's Window Sink.
# The handler, on key release, sets the "listen_to" setting to the Interpipe Sink
# name that corresponds to the key value - 1 through 4.
#!/usr/bin/env python
import sys
import time
from dsl import *
uri1 = '/opt/nvidia/deepstream/deepstream/samples/streams/sample_run.mov'
uri2 = '/opt/nvidia/deepstream/deepstream/samples/streams/sample_push.mov'
uri3 = '/opt/nvidia/deepstream/deepstream/samples/streams/sample_ride_bike.mov'
uri4 = '/opt/nvidia/deepstream/deepstream/samples/streams/sample_walk.mov'
# Filespecs for the Primary GIE - Jetson & dGPU
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'
tracker_config_file = '/opt/nvidia/deepstream/deepstream/samples/configs/deepstream-app/config_tracker_IOU.yml'
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 >= '1' and key_string <= '4':
dsl_source_interpipe_listen_to_set('inter-pipe-source',
listen_to='inter-pipe-sink-'+key_string)
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 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):
# Since we're not using args, we can Let DSL initialize GST on first call
while True:
# Four new file sources using the filespecs defined above
retval = dsl_source_file_new('file-source-1', uri1, True)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_source_file_new('file-source-2', uri2, True)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_source_file_new('file-source-3', uri3, True)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_source_file_new('file-source-4', uri4, True)
if retval != DSL_RETURN_SUCCESS:
break
# Four new inter-pipe sinks
retval = dsl_sink_interpipe_new('inter-pipe-sink-1',
forward_eos=True, forward_events=True)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_sink_interpipe_new('inter-pipe-sink-2',
forward_eos=True, forward_events=True)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_sink_interpipe_new('inter-pipe-sink-3',
forward_eos=True, forward_events=True)
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_sink_interpipe_new('inter-pipe-sink-4',
forward_eos=True, forward_events=True)
if retval != DSL_RETURN_SUCCESS:
break
# Four new Players, each with a file source and inter-pipe sink
retval = dsl_player_new('player-1', 'file-source-1', 'inter-pipe-sink-1')
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_player_new('player-2', 'file-source-2', 'inter-pipe-sink-2')
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_player_new('player-3', 'file-source-3', 'inter-pipe-sink-3')
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_player_new('player-4', 'file-source-4', 'inter-pipe-sink-4')
if retval != DSL_RETURN_SUCCESS:
break
#-----------------------------------------------------------------------------
# Create the Inference Pipeline with an inter-pipe source that can
# dynamically switch between the four players and their inter-pipe sink
# New inter-pipe source - listen to inter-pipe-sink-1 to start with.
retval = dsl_source_interpipe_new('inter-pipe-source',
listen_to='inter-pipe-sink-1', is_live=False,
accept_eos=True, accept_events=True)
# New Primary GIE's using the filespecs above with interval = 4
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 max width and height of input frame
retval = dsl_tracker_new('iou-tracker', tracker_config_file, 480, 272)
if retval != DSL_RETURN_SUCCESS:
break
# New OSD's with text, clock and bbox display all enabled.
retval = dsl_osd_new('on-screen-display',
text_enabled=True, clock_enabled=True, bbox_enabled=True, mask_enabled=False)
if retval != DSL_RETURN_SUCCESS:
break
# New Window Sink, 0 x/y offsets and same dimensions as Tiled Display
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 to the Window Sink
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', components=[
'inter-pipe-source', 'primary-gie', 'iou-tracker', '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
# Start the four players first (although, it's safe to start the Pipeline first)
retval = dsl_player_play('player-1')
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_player_play('player-2')
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_player_play('player-3')
if retval != DSL_RETURN_SUCCESS:
break
retval = dsl_player_play('player-4')
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))
# Cleanup all DSL/GST resources
dsl_delete_all()
if __name__ == '__main__':
sys.exit(main(sys.argv))