service-maker/sources/modules/sample_video_receiver/sample_video_receiver.hpp

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/*
 * SPDX-FileCopyrightText: Copyright (c) 2024-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#include <iostream>
 
#include "data_receiver.hpp"
 
#define PGIE_CLASS_ID_VEHICLE 0
#define PGIE_CLASS_ID_PERSON 2
 
namespace deepstream {
 
class ObjectCounter : public DataReceiver::IDataConsumer {
 public:
  virtual int consume(DataReceiver& receiver, Buffer buffer) {
    VideoBuffer video_buffer = buffer;
    BatchMetadata batch_meta = video_buffer.getBatchMetadata();
    batch_meta.iterate([](const FrameMetadata& frame_data) {
      auto vehicle_count = 0;
      auto person_count = 0;
      frame_data.iterate([&](const ObjectMetadata& object_data) {
        auto class_id = object_data.classId();
        if (class_id == PGIE_CLASS_ID_VEHICLE) {
          vehicle_count++;
        } else if (class_id == PGIE_CLASS_ID_PERSON ) {
          person_count++;
        }
      });
      std::cout << "Object Counter: " <<
        " Pad Idx = " << frame_data.padIndex() <<
        " Frame Number = " << frame_data.frameNum() <<
        " Vehicle Count = " << vehicle_count <<
        " Person Count = " << person_count << std::endl;
    });
    return 1;
  }
};
}