Program Listing for File holoviz.hpp

            

            
/*
* SPDX-FileCopyrightText: Copyright (c) 2022 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 GXF_EXTENSIONS_HOLOVIZ_HOLOVIZ_HPP
#define GXF_EXTENSIONS_HOLOVIZ_HOLOVIZ_HPP

#include <array>
#include <list>
#include <string>
#include <vector>

#include "gxf/core/handle.hpp"
#include "gxf/std/allocator.hpp"
#include "gxf/std/codelet.hpp"
#include "gxf/std/receiver.hpp"
#include "gxf/std/scheduling_terms.hpp"

namespace nvidia::holoscan {

class Holoviz : public gxf::Codelet {
 public:
  gxf_result_t registerInterface(gxf::Registrar* registrar) override;

  gxf_result_t start() override;
  gxf_result_t tick() override;
  gxf_result_t stop() override;

  enum class InputType {
    UNKNOWN,
    COLOR,
    COLOR_LUT,
    POINTS,
    LINES,
    LINE_STRIP,
    TRIANGLES,
    CROSSES,
    RECTANGLES,
    OVALS,
    TEXT
  };

  struct InputSpec {
    InputSpec() = default;
    InputSpec(const std::string tensor_name, InputType type)
        : tensor_name_(tensor_name), type_(type) {}

    std::string tensor_name_;
    InputType type_;
    float opacity_ = 1.f;
    int32_t priority_ =
        0;
    std::vector<float> color_{1.f, 1.f, 1.f, 1.f};
    float line_width_ = 1.f;
    float point_size_ = 1.f;
    std::vector<std::string> text_;
  };

 private:
  // parameters
  gxf::Parameter<std::vector<gxf::Handle<gxf::Receiver>>> receivers_;

  gxf::Parameter<gxf::Handle<gxf::Receiver>> render_buffer_input_;
  gxf::Parameter<gxf::Handle<gxf::Transmitter>> render_buffer_output_;

  gxf::Parameter<std::vector<InputSpec>> tensors_;

  gxf::Parameter<std::vector<std::vector<float>>> color_lut_;

  gxf::Parameter<std::string> window_title_;
  gxf::Parameter<std::string> display_name_;
  gxf::Parameter<uint32_t> width_;
  gxf::Parameter<uint32_t> height_;
  gxf::Parameter<uint32_t> framerate_;
  gxf::Parameter<bool> use_exclusive_display_;
  gxf::Parameter<bool> fullscreen_;
  gxf::Parameter<bool> headless_;
  gxf::Parameter<gxf::Handle<gxf::BooleanSchedulingTerm>> window_close_scheduling_term_;

  gxf::Parameter<gxf::Handle<gxf::Allocator>> allocator_;

  // internal state
  std::vector<float> lut_;
  std::vector<InputSpec> input_spec_;
};

}  // namespace nvidia::holoscan

#endif/* GXF_EXTENSIONS_HOLOVIZ_HOLOVIZ_HPP */