Program Listing for File bayer_demosaic_gpu_resident.hpp

            

            
/*
* SPDX-FileCopyrightText: Copyright (c) 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 HOLOSCAN_OPERATORS_BAYER_DEMOSAIC_GPU_RESIDENT_BAYER_DEMOSAIC_GPU_RESIDENT_HPP
#define HOLOSCAN_OPERATORS_BAYER_DEMOSAIC_GPU_RESIDENT_BAYER_DEMOSAIC_GPU_RESIDENT_HPP

#include <npp.h>

#include <cstdint>

#include "holoscan/core/gpu_resident_operator.hpp"
#include "holoscan/core/io_context.hpp"
#include "holoscan/core/io_spec.hpp"
#include "holoscan/core/operator_spec.hpp"

namespace holoscan::ops {

class BayerDemosaicGpuResidentOp : public holoscan::GPUResidentOperator {
 public:
  HOLOSCAN_OPERATOR_FORWARD_ARGS_SUPER(BayerDemosaicGpuResidentOp, holoscan::GPUResidentOperator)

  BayerDemosaicGpuResidentOp() = default;

  void setup(OperatorSpec& spec) override;

  void initialize() override;

  void compute(InputContext& op_input, OutputContext& op_output,
               ExecutionContext& context) override;

 private:
  // Configuration parameters
  Parameter<int32_t> width_;
  Parameter<int32_t> height_;
  Parameter<int32_t> pixel_type_;  // 0 = uint8, 1 = uint16
  Parameter<int> bayer_interp_mode_;
  Parameter<int> bayer_grid_pos_;
  Parameter<bool> generate_alpha_;
  Parameter<int> alpha_value_;

  // Cached NPP parameters (set once during initialize)
  NppStreamContext npp_stream_ctx_{};
  NppiInterpolationMode npp_bayer_interp_mode_ = NPPI_INTER_UNDEFINED;
  NppiBayerGridPosition npp_bayer_grid_pos_ = NPPI_BAYER_GBRG;

  // Pre-computed values for compute
  int32_t in_line_step_ = 0;
  int32_t out_line_step_ = 0;
  NppiSize roi_size_{0, 0};
  NppiRect roi_rect_{0, 0, 0, 0};
  int16_t out_channels_ = 3;
  size_t element_size_ = 1;
};

}  // namespace holoscan::ops

#endif/* HOLOSCAN_OPERATORS_BAYER_DEMOSAIC_GPU_RESIDENT_BAYER_DEMOSAIC_GPU_RESIDENT_HPP */