gdalalg_raster_neighbors.h

/******************************************************************************
 *
 * Project:  GDAL
 * Purpose:  "neighbors" step of "raster pipeline"
 * Author:   Even Rouault <even dot rouault at spatialys.com>
 *
 ******************************************************************************
 * Copyright (c) 2025, Even Rouault <even dot rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/
 
#ifndef GDALALG_RASTER_NEIGHBORS_INCLUDED
#define GDALALG_RASTER_NEIGHBORS_INCLUDED
 
#include "gdalalg_raster_pipeline.h"

 
/************************************************************************/
/*                    GDALRasterNeighborsAlgorithm                      */
/************************************************************************/
 
class GDALRasterNeighborsAlgorithm : public GDALRasterPipelineStepAlgorithm
{
  public:
    explicit GDALRasterNeighborsAlgorithm(bool standaloneStep = false) noexcept;
 
    static constexpr const char *NAME = "neighbors";
    static constexpr const char *DESCRIPTION =
        "Compute the value of each pixel from its neighbors (focal statistics)";
    static constexpr const char *HELP_URL =
        "/programs/gdal_raster_neighbors.html";
 
    static std::vector<std::string> GetAliasesStatic()
    {
        return {"neighbours"};
    }
 
  private:
    bool RunStep(GDALPipelineStepRunContext &ctxt) override;
 
    int m_band = 0;
    std::vector<std::string> m_method{};
    int m_size = 0;
    std::vector<std::string> m_kernel{};
    std::string m_type{};
    std::string m_nodata{};
};
 
/************************************************************************/
/*                  GDALRasterNeighborsAlgorithmStandalone              */
/************************************************************************/
 
class GDALRasterNeighborsAlgorithmStandalone final
    : public GDALRasterNeighborsAlgorithm
{
  public:
    GDALRasterNeighborsAlgorithmStandalone()
        : GDALRasterNeighborsAlgorithm(/* standaloneStep = */ true)
    {
    }
 
    ~GDALRasterNeighborsAlgorithmStandalone() override;
};

 
#endif /* GDALALG_RASTER_CALC_INCLUDED */