LCOV - code coverage report
Current view: top level - apps - gdalalg_raster_resize.cpp (source / functions) Hit Total Coverage
Test: gdal_filtered.info Lines: 42 44 95.5 %
Date: 2025-03-28 11:40:40 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  GDAL
       4             :  * Purpose:  "resize" 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             : #include "gdalalg_raster_resize.h"
      14             : 
      15             : #include "gdal_priv.h"
      16             : #include "gdal_utils.h"
      17             : 
      18             : //! @cond Doxygen_Suppress
      19             : 
      20             : #ifndef _
      21             : #define _(x) (x)
      22             : #endif
      23             : 
      24             : /************************************************************************/
      25             : /*        GDALRasterResizeAlgorithm::GDALRasterResizeAlgorithm()        */
      26             : /************************************************************************/
      27             : 
      28          10 : GDALRasterResizeAlgorithm::GDALRasterResizeAlgorithm(bool standaloneStep)
      29             :     : GDALRasterPipelineStepAlgorithm(NAME, DESCRIPTION, HELP_URL,
      30          10 :                                       standaloneStep)
      31             : {
      32          20 :     auto &sizeArg = AddArg("size", 0, _("Target size in pixels"), &m_size)
      33          10 :                         .SetMinCount(2)
      34          10 :                         .SetMaxCount(2)
      35          10 :                         .SetRequired()
      36          10 :                         .SetRepeatedArgAllowed(false)
      37          10 :                         .SetDisplayHintAboutRepetition(false)
      38          20 :                         .SetMetaVar("<width>,<height>")
      39          10 :                         .SetMutualExclusionGroup("resolution-size");
      40             :     sizeArg.AddValidationAction(
      41           2 :         [&sizeArg]()
      42             :         {
      43           2 :             const auto &val = sizeArg.Get<std::vector<int>>();
      44           2 :             CPLAssert(val.size() == 2);
      45           2 :             if (!(val[0] >= 0 && val[1] >= 0))
      46             :             {
      47           0 :                 CPLError(CE_Failure, CPLE_AppDefined,
      48             :                          "Target size should be positive or 0.");
      49           0 :                 return false;
      50             :             }
      51           2 :             return true;
      52          10 :         });
      53             : 
      54          20 :     AddArg("resampling", 'r', _("Resampling method"), &m_resampling)
      55             :         .SetChoices("nearest", "bilinear", "cubic", "cubicspline", "lanczos",
      56          10 :                     "average", "mode")
      57          10 :         .SetDefault("nearest")
      58          10 :         .SetHiddenChoices("near");
      59          10 : }
      60             : 
      61             : /************************************************************************/
      62             : /*              GDALRasterResizeAlgorithm::RunStep()                    */
      63             : /************************************************************************/
      64             : 
      65           2 : bool GDALRasterResizeAlgorithm::RunStep(GDALProgressFunc, void *)
      66             : {
      67           2 :     CPLAssert(m_inputDataset.GetDatasetRef());
      68           2 :     CPLAssert(m_outputDataset.GetName().empty());
      69           2 :     CPLAssert(!m_outputDataset.GetDatasetRef());
      70             : 
      71           4 :     CPLStringList aosOptions;
      72           2 :     aosOptions.AddString("-of");
      73           2 :     aosOptions.AddString("VRT");
      74           2 :     if (!m_size.empty())
      75             :     {
      76           2 :         aosOptions.AddString("-outsize");
      77           2 :         aosOptions.AddString(CPLSPrintf("%d", m_size[0]));
      78           2 :         aosOptions.AddString(CPLSPrintf("%d", m_size[1]));
      79             :     }
      80           2 :     if (!m_resampling.empty())
      81             :     {
      82           2 :         aosOptions.AddString("-r");
      83           2 :         aosOptions.AddString(m_resampling.c_str());
      84             :     }
      85             : 
      86             :     GDALTranslateOptions *psOptions =
      87           2 :         GDALTranslateOptionsNew(aosOptions.List(), nullptr);
      88             : 
      89             :     auto poOutDS = std::unique_ptr<GDALDataset>(GDALDataset::FromHandle(
      90             :         GDALTranslate("", GDALDataset::ToHandle(m_inputDataset.GetDatasetRef()),
      91           2 :                       psOptions, nullptr)));
      92           2 :     GDALTranslateOptionsFree(psOptions);
      93           2 :     const bool bRet = poOutDS != nullptr;
      94           2 :     if (poOutDS)
      95             :     {
      96           2 :         m_outputDataset.Set(std::move(poOutDS));
      97             :     }
      98             : 
      99           4 :     return bRet;
     100             : }
     101             : 
     102             : //! @endcond

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