sources/gst-plugins/gst-dsexample-cuda/gstdsexample_cuda.h

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/*
 * SPDX-FileCopyrightText: Copyright (c) 2025-2026 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.
 */
 
#ifndef __GST_DSEXAMPLE_CUDA_H__
#define __GST_DSEXAMPLE_CUDA_H__
 
#include <gst/base/gstbasetransform.h>
#include <gst/video/video.h>
 
/* Open CV headers */
#pragma GCC diagnostic push
#if __GNUC__ >= 8
#pragma GCC diagnostic ignored "-Wclass-memaccess"
#endif
#ifdef WITH_OPENCV
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/core/cuda.hpp"
#include "opencv2/cudaimgproc.hpp"
#include "opencv2/cudafilters.hpp"
#endif
#pragma GCC diagnostic pop
 
#include <cuda.h>
#include <cuda_runtime.h>
#include "nvbufsurface.h"
#include "nvbufsurftransform.h"
#include "gst-nvquery.h"
#include "gstnvdsmeta.h"
#include "dsexample_lib/dsexample_lib.h"
 
/* Package and library details required for plugin_init */
#define PACKAGE "dsexample"
#define VERSION "1.0"
#define LICENSE "Proprietary"
#define DESCRIPTION "NVIDIA example plugin for integration with DeepStream on DGPU"
#define BINARY_PACKAGE "NVIDIA DeepStream 3rdparty IP integration example plugin"
#define URL "http://nvidia.com/"
 
 
G_BEGIN_DECLS
/* Standard boilerplate stuff */
typedef struct _GstDsExample GstDsExample;
typedef struct _GstDsExampleClass GstDsExampleClass;
 
/* Standard boilerplate stuff */
#define GST_TYPE_DSEXAMPLE (gst_dsexample_get_type())
#define GST_DSEXAMPLE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DSEXAMPLE,GstDsExample))
#define GST_DSEXAMPLE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DSEXAMPLE,GstDsExampleClass))
#define GST_DSEXAMPLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_DSEXAMPLE, GstDsExampleClass))
#define GST_IS_DSEXAMPLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DSEXAMPLE))
#define GST_IS_DSEXAMPLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DSEXAMPLE))
#define GST_DSEXAMPLE_CAST(obj)  ((GstDsExample *)(obj))
 
#define NVDSEXAMPLE_MAX_BATCH_SIZE 1024
 
struct _GstDsExample
{
  GstBaseTransform base_trans;
 
  // Context of the custom algorithm library
  DsExampleCtx *dsexamplelib_ctx;
 
  // Unique ID of the element. The labels generated by the element will be
  // updated at index `unique_id` of attr_info array in NvDsObjectParams.
  guint unique_id;
 
  // Frame number of the current input buffer
  guint64 frame_num;
 
  // CUDA Stream used for allocating the CUDA task
  cudaStream_t cuda_stream;
 
  // Device buffer to store RGB data for use by algorithm
  void *device_rgb_buf;
 
  // the intermediate scratch buffer for conversions RGBA
  NvBufSurface *inter_buf;
 
#ifdef WITH_OPENCV
  // OpenCV GPU mat containing RGB data
  cv::cuda::GpuMat *cvgpumat;
#endif
 
  // Input video info (resolution, color format, framerate, etc)
  GstVideoInfo video_info;
 
  // Resolution at which frames/objects should be processed
  gint processing_width;
  gint processing_height;
 
  // Flag which defince igpu/dgpu
  guint is_integrated;
 
  // Maximum batch size
  guint max_batch_size;
 
  // GPU ID on which we expect to execute the task
  guint gpu_id;
 
  // Boolean indicating if entire frame or cropped objects should be processed
  gboolean process_full_frame;
 
  // Boolean indicating if to blur the detected objects
  gboolean blur_objects;
 
  NvBufSurfTransformConfigParams transform_config_params;
};
 
// Boiler plate stuff
struct _GstDsExampleClass
{
  GstBaseTransformClass parent_class;
};
 
GType gst_dsexample_get_type (void);
 
G_END_DECLS
#endif /* __GST_DSEXAMPLE_H__ */