ode_new_high_new_low_triggers_fill_frame.py

################################################################################
# The MIT License
#
# Copyright (c) 2021-2023, Prominence AI, Inc.
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################################################################################
#
# This example demonstrates the use of the New-High and New-Low Count Triggers
# that trigger on new high and low object counts respectively. The frame is 
# filled with a full color for a (brief) visual indication on each new occurrence.
# A print Action is used to print the event data to the console as well.
#
# The example uses a basic inference Pipeline consisting of:
#   - A URI Source
#   - Primary GST Inference Engine (PGIE)
#   - IOU Tracker
#   - On-Screen Display
#   - Window Sink
#  
################################################################################

#!/usr/bin/env python

import sys
from dsl import *

uri_h265 = "/opt/nvidia/deepstream/deepstream/samples/streams/sample_1080p_h265.mp4"

# Filespecs 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'

PGIE_CLASS_ID_VEHICLE = 0
PGIE_CLASS_ID_BICYCLE = 1
PGIE_CLASS_ID_PERSON = 2
PGIE_CLASS_ID_ROADSIGN = 3

TILER_WIDTH = DSL_1K_HD_WIDTH
TILER_HEIGHT = DSL_1K_HD_HEIGHT
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):

    # Since we're not using args, we can Let DSL initialize GST on first call
    while True:
    
        #```````````````````````````````````````````````````````````````````````````````````

        # Create a Format Label Action to remove the Object Label from view
        # Note: the label can be disabled with the OSD API as well. 
        retval = dsl_ode_action_label_format_new('remove-label', 
            font=None, has_bg_color=False, bg_color=None)
        if retval != DSL_RETURN_SUCCESS:
            break
            
        # Create a Format Bounding Box Action to remove the box border from view
        retval = dsl_ode_action_bbox_format_new('remove-border', border_width=0,
            border_color=None, has_bg_color=False, bg_color=None)
        if retval != DSL_RETURN_SUCCESS:
            break

        # Create an Any-Class Occurrence Trigger for our remove label and border actions
        retval = dsl_ode_trigger_occurrence_new('every-occurrence-trigger', source='uri-source-1',
            class_id=DSL_ODE_ANY_CLASS, limit=DSL_ODE_TRIGGER_LIMIT_NONE)
        if retval != DSL_RETURN_SUCCESS:
            break
        retval = dsl_ode_trigger_action_add_many('every-occurrence-trigger', 
            actions=['remove-label', 'remove-border', None])
        if retval != DSL_RETURN_SUCCESS:
            break

        #```````````````````````````````````````````````````````````````````````````````````
        # Create two new RGBA fill colors to fill the frame on new-high and new-low
        retval = dsl_display_type_rgba_color_custom_new('opaque-red', red=1.0, green=0.0, blue=0.0, alpha=0.5)
        if retval != DSL_RETURN_SUCCESS:
            break
            
        retval = dsl_display_type_rgba_color_custom_new('opaque-blue', red=0.0, green=0.0, blue=1.0, alpha=0.5)
        if retval != DSL_RETURN_SUCCESS:
            break
            
        #```````````````````````````````````````````````````````````````````````````````````
        # Create two new Actions to fill the frame, one opaque-red the other opaque-blue.
        retval = dsl_ode_action_fill_frame_new('fill-frame-red', color='opaque-red')
        if retval != DSL_RETURN_SUCCESS:
            break
        retval = dsl_ode_action_fill_frame_new('fill-frame-blue', color='opaque-blue')
        if retval != DSL_RETURN_SUCCESS:
            break

        # And a single action to print the event data to the console, which will be used
        # by both our new-min and new-max Triggers - created next
        retval = dsl_ode_action_print_new('print-data', force_flush=False)
        if retval != DSL_RETURN_SUCCESS:
            break

        #```````````````````````````````````````````````````````````````````````````````````
        # Create two new triggers, one for new high with preset of 5 objects
        # i.e will not trigger until at least 6 objects detected, setting the high-count
        retval = dsl_ode_trigger_new_high_new('new-high-trigger', source='uri-source-1',
            class_id=DSL_ODE_ANY_CLASS, limit=DSL_ODE_TRIGGER_LIMIT_NONE, preset=5)
        if retval != DSL_RETURN_SUCCESS:
            break

        # one for new low with preset of 6 objects i.e will not trigger until fewer than
        # 6 objects detected, setting the low-count
        retval = dsl_ode_trigger_new_low_new('new-low-trigger', source='uri-source-1',
            class_id=DSL_ODE_ANY_CLASS, limit=DSL_ODE_TRIGGER_LIMIT_NONE, preset=6)
        if retval != DSL_RETURN_SUCCESS:
            break

        #```````````````````````````````````````````````````````````````````````````````````
        # Next, we add our Actions to our Triggers
        retval = dsl_ode_trigger_action_add_many('new-high-trigger',
            actions=['fill-frame-red', 'print-data', None])
        if retval != DSL_RETURN_SUCCESS:
            break
        retval = dsl_ode_trigger_action_add_many('new-low-trigger',
            actions=['fill-frame-blue', 'print-data', None])
        if retval != DSL_RETURN_SUCCESS:
            break

        #```````````````````````````````````````````````````````````````````````````````````
        # New ODE Handler to handle all ODE Triggers    
        retval = dsl_pph_ode_new('ode-handler')
        if retval != DSL_RETURN_SUCCESS:
            break
        retval = dsl_pph_ode_trigger_add_many('ode-handler', 
            triggers=['new-high-trigger', 'new-low-trigger', None])
        if retval != DSL_RETURN_SUCCESS:
            break
        
        ####################################################################################
        #
        # Create the remaining Pipeline components
        
        # New URI File Source using the filespec defined above
        retval = dsl_source_uri_new('uri-source-1', uri_h265, False, False, 0)
        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, 1)
        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

        # Add our ODE Pad Probe Handler to the Source (output) pad of the Tracker
        retval = dsl_tracker_pph_add('iou-tracker', 
            handler='ode-handler', pad=DSL_PAD_SRC)
        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=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', 
            ['uri-source-1', '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
        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))

    # Cleanup all DSL/GST resources
    dsl_delete_all()
    
if __name__ == '__main__':
    sys.exit(main(sys.argv))