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deepstream_nvdsanalytics_meta.cpp
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deepstream_nvdsanalytics_meta.cpp
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/*
* Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
*
* 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.
*/
#include <gst/gst.h>
#include <glib.h>
#include <iostream>
#include <vector>
#include <unordered_map>
#include <sstream>
#include "gstnvdsmeta.h"
#include "nvds_analytics_meta.h"
/* parse_nvdsanalytics_meta_data
* and extract nvanalytics metadata etc. */
extern "C" void
parse_nvdsanalytics_meta_data (NvDsBatchMeta *batch_meta)
{
NvDsObjectMeta *obj_meta = NULL;
NvDsMetaList * l_frame = NULL;
NvDsMetaList * l_obj = NULL;
//NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta (buf);
for (l_frame = batch_meta->frame_meta_list; l_frame != NULL;
l_frame = l_frame->next) {
NvDsFrameMeta *frame_meta = (NvDsFrameMeta *) (l_frame->data);
std::stringstream out_string;
/* Iterate user metadata in frames to search analytics metadata */
for (NvDsMetaList * l_user = frame_meta->frame_user_meta_list;
l_user != NULL; l_user = l_user->next) {
NvDsUserMeta *user_meta = (NvDsUserMeta *) l_user->data;
if (user_meta->base_meta.meta_type != NVDS_USER_FRAME_META_NVDSANALYTICS)
continue;
/* convert to metadata */
NvDsAnalyticsFrameMeta *meta =
(NvDsAnalyticsFrameMeta *) user_meta->user_meta_data;
/* Get the labels from nvdsanalytics config file */
for (std::pair<std::string, uint32_t> status : meta->objInROIcnt){
out_string << " Objs in ROI ";
out_string << status.first;
out_string << " = ";
out_string << status.second;
out_string << "\n";
}
for (std::pair<std::string, uint32_t> status : meta->objLCCumCnt){
out_string << " LineCrossing Cumulative ";
out_string << status.first;
out_string << " = ";
out_string << status.second;
out_string << "\n";
}
for (std::pair<std::string, uint32_t> status : meta->objLCCurrCnt){
out_string << " LineCrossing Current Frame ";
out_string << status.first;
out_string << " = ";
out_string << status.second;
out_string << "\n";
}
for (std::pair<std::string, bool> status : meta->ocStatus){
out_string << " Overcrowding status ";
out_string << status.first;
out_string << " = ";
out_string << status.second;
out_string << "\n";
}
}
for (l_obj = frame_meta->obj_meta_list; l_obj != NULL;
l_obj = l_obj->next) {
obj_meta = (NvDsObjectMeta *) (l_obj->data);
// Access attached user meta for each object
for (NvDsMetaList *l_user_meta = obj_meta->obj_user_meta_list; l_user_meta != NULL;
l_user_meta = l_user_meta->next) {
NvDsUserMeta *user_meta = (NvDsUserMeta *) (l_user_meta->data);
if(user_meta->base_meta.meta_type == NVDS_USER_OBJ_META_NVDSANALYTICS)
{
NvDsAnalyticsObjInfo * user_meta_data =
(NvDsAnalyticsObjInfo *)user_meta->user_meta_data;
if (user_meta_data->dirStatus.length()){
out_string << " object " << obj_meta->object_id <<
" is moving in " << user_meta_data->dirStatus;
}
}
}
}
if (out_string.str().size()){
g_print ("Frame Number = %d of Stream = %d, %s\n",
frame_meta->frame_num, frame_meta->pad_index,
out_string.str().c_str());
}
}
}