Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  GDAL
       4             :  * Purpose:  "blend" step of "raster pipeline"
       5             :  * Author:   Even Rouault <even dot rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2025, Even Rouault <even dot rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #ifndef GDALALG_RASTER_BLEND_INCLUDED
      14             : #define GDALALG_RASTER_BLEND_INCLUDED
      15             : 
      16             : #include "gdalalg_raster_pipeline.h"
      17             : 
      18             : //! @cond Doxygen_Suppress
      19             : 
      20             : /************************************************************************/
      21             : /*                     GDALRasterBlendAlgorithm                         */
      22             : /************************************************************************/
      23             : 
      24             : class GDALRasterBlendAlgorithm /* non final*/
      25             :     : public GDALRasterPipelineStepAlgorithm
      26             : {
      27             :   public:
      28             :     explicit GDALRasterBlendAlgorithm(bool standaloneStep = false);
      29             : 
      30             :     static constexpr const char *NAME = "blend";
      31             :     static constexpr const char *DESCRIPTION =
      32             :         "Blend/compose two raster datasets";
      33             :     static constexpr const char *HELP_URL = "/programs/gdal_raster_blend.html";
      34             : 
      35             :   private:
      36             :     bool RunStep(GDALPipelineStepRunContext &ctxt) override;
      37             :     bool ValidateGlobal();
      38             : 
      39             :     GDALArgDatasetValue m_overlayDataset{};
      40             :     std::string m_operator{};
      41             :     static constexpr int OPACITY_INPUT_RANGE = 100;
      42             :     int m_opacity = OPACITY_INPUT_RANGE;
      43             : };
      44             : 
      45             : /************************************************************************/
      46             : /*                  GDALRasterBlendAlgorithmStandalone                  */
      47             : /************************************************************************/
      48             : 
      49          84 : class GDALRasterBlendAlgorithmStandalone final : public GDALRasterBlendAlgorithm
      50             : {
      51             :   public:
      52          42 :     GDALRasterBlendAlgorithmStandalone()
      53          42 :         : GDALRasterBlendAlgorithm(/* standaloneStep = */ true)
      54             :     {
      55          42 :     }
      56             : 
      57             :     ~GDALRasterBlendAlgorithmStandalone() override;
      58             : };
      59             : 
      60             : //! @endcond
      61             : 
      62             : #endif /* GDALALG_RASTER_COLOR_MERGE_INCLUDED */