encode_and_save_frame_to_jpeg_thumbnail_periodically.cpp

/*
The MIT License

Copyright (c) 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
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The above copyright notice and this permission notice shall be included in-
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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
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

/*

 This example demonstrates the use of a Multi-Image Sink to encode and
 save video frames to JPEG files at specified dimensions and frame-rate.

 The ouput file path/names are specified using a printf style %d in the 
 provided absolute or relative path. 
   eample: "./my_images/image.%d04.jpg", will create files in "./my_images/"
   named "image.0000.jpg", "image.0001.jpg", "image.0002.jpg" etc.

 You can limit the number of files that are saved on disc by calling
   dsl_sink_multi_image_file_max_set. Default = 0 = no max.

 Once max-files is reached, old files will be deleted to make room for new
 ones.
*/

#include <iostream>
#include <glib.h>
#include <gst/gst.h>
#include <gstnvdsmeta.h>

#include "DslApi.h"

std::wstring uri_h265(
    L"/opt/nvidia/deepstream/deepstream/samples/streams/sample_1080p_h265.mp4");

// Config and model-engine files - Jetson and dGPU
std::wstring primary_infer_config_file(
    L"/opt/nvidia/deepstream/deepstream/samples/configs/deepstream-app/config_infer_primary.txt");
std::wstring primary_model_engine_file(
    L"/opt/nvidia/deepstream/deepstream/samples/models/Primary_Detector/resnet18_trafficcamnet.etlt_b8_gpu0_int8.engine");

// Config file used by the IOU Tracker    
std::wstring iou_tracker_config_file(
    L"/opt/nvidia/deepstream/deepstream/samples/configs/deepstream-app/config_tracker_IOU.yml");


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

uint WINDOW_WIDTH = DSL_1K_HD_WIDTH;
uint WINDOW_HEIGHT = DSL_1K_HD_HEIGHT;

// 
// Function to be called on XWindow KeyRelease event
// 
void xwindow_key_event_handler(const wchar_t* in_key, void* client_data)
{   
    std::wstring wkey(in_key); 
    std::string key(wkey.begin(), wkey.end());
    std::cout << "key released = " << key << std::endl;
    key = std::toupper(key[0]);
    if(key == "P"){
        dsl_pipeline_pause(L"pipeline");
    } else if (key == "R"){
        dsl_pipeline_play(L"pipeline");
    } else if (key == "Q" or key == "" or key == ""){
        std::cout << "Main Loop Quit" << std::endl;
        dsl_pipeline_stop(L"pipeline");
        dsl_main_loop_quit();
    }
}

// 
// Function to be called on XWindow Delete event
//
void xwindow_delete_event_handler(void* client_data)
{
    std::cout<<"delete window event"<<std::endl;
    dsl_pipeline_stop(L"pipeline");
    dsl_main_loop_quit();
}
    
// 
// Function to be called on End-of-Stream (EOS) event
// 
void eos_event_listener(void* client_data)
{
    std::cout<<"Pipeline EOS event"<<std::endl;
    dsl_pipeline_stop(L"pipeline");
    dsl_main_loop_quit();
}    

// 
// Function to be called on every change of Pipeline state
// 
void state_change_listener(uint old_state, uint new_state, void* client_data)
{
    std::cout<<"previous state = " << dsl_state_value_to_string(old_state) 
        << ", new state = " << dsl_state_value_to_string(new_state) << std::endl;
}

int main(int argc, char** argv)
{
    DslReturnType retval = DSL_RESULT_FAILURE;

    // Since we're not using args, we can Let DSL initialize GST on first call    
    while(true) 
    {    

        // New File Source
        retval = dsl_source_file_new(L"file-source", uri_h265.c_str(), true);
        if (retval != DSL_RESULT_SUCCESS) break;

        // New Primary GIE using the filespecs defined above, with interval = 4
        retval = dsl_infer_gie_primary_new(L"primary-gie", 
            primary_infer_config_file.c_str(), 
            primary_model_engine_file.c_str(), 4);
        if (retval != DSL_RESULT_SUCCESS) break;
        
        // New IOU Tracker, setting operational width and height of input frame
        retval = dsl_tracker_new(L"iou-tracker", 
            iou_tracker_config_file.c_str(), 480, 272);
        if (retval != DSL_RESULT_SUCCESS) break;

        // New OSD with text, clock and bbox display all enabled. 
        retval = dsl_osd_new(L"on-screen-display", true, true, true, false);
        if (retval != DSL_RESULT_SUCCESS) break;

        // New Window Sink, 0 x/y offsets.
        retval = dsl_sink_window_egl_new(L"egl-sink", 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
        if (retval != DSL_RESULT_SUCCESS) break;
    
        // Add the XWindow event handler functions defined above
        retval = dsl_sink_window_key_event_handler_add(L"egl-sink", 
            xwindow_key_event_handler, NULL);
        if (retval != DSL_RESULT_SUCCESS) break;

        retval = dsl_sink_window_delete_event_handler_add(L"egl-sink", 
            xwindow_delete_event_handler, NULL);
        if (retval != DSL_RESULT_SUCCESS) break;
    
        // New Multi-Image Sink, reduced thumbnail dimensions with an 
        // output frame-rate of once every 10 seconds
        retval = dsl_sink_image_multi_new(L"multi-image-sink", L"./frame_%04d.jpg",
            640, 360, 1, 10);
        if (retval != DSL_RESULT_SUCCESS) break;
    
        // Create a list of Pipeline Components to add to the new Pipeline.
        const wchar_t* components[] = {L"file-source",  L"primary-gie", 
            L"iou-tracker", L"on-screen-display", L"egl-sink", L"multi-image-sink", NULL};
        
        // Add all the components to our pipeline
        retval = dsl_pipeline_new_component_add_many(L"pipeline", components);
        if (retval != DSL_RESULT_SUCCESS) break;
            
        // Add the EOS listener function defined above
        retval = dsl_pipeline_eos_listener_add(L"pipeline", eos_event_listener, NULL);
        if (retval != DSL_RESULT_SUCCESS) break;

        // Play the pipeline
        retval = dsl_pipeline_play(L"pipeline");
        if (retval != DSL_RESULT_SUCCESS) break;

        // Start and join the main-loop
        dsl_main_loop_run();
        break;

    }
    
    // Print out the final result
    std::cout << dsl_return_value_to_string(retval) << std::endl;

    dsl_delete_all();

    std::cout<<"Goodbye!"<<std::endl;  
    return 0;
}