Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  OpenGIS Simple Features Reference Implementation
       4             :  * Purpose:  Implements Basis Universal / KTX2 driver.
       5             :  * Author:   Even Rouault, <even dot rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2022, Even Rouault <even dot rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #include "ktx2drivercore.h"
      14             : #include "commoncore.h"
      15             : 
      16             : /************************************************************************/
      17             : /*                     KTX2DriverIdentify()                             */
      18             : /************************************************************************/
      19             : 
      20       50385 : int KTX2DriverIdentify(GDALOpenInfo *poOpenInfo)
      21             : 
      22             : {
      23       50385 :     constexpr GByte KTX2Signature[] = {0xAB, 0x4B, 0x54, 0x58, 0x20, 0x32,
      24             :                                        0x30, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A};
      25       50385 :     if (STARTS_WITH(poOpenInfo->pszFilename, "KTX2:"))
      26          16 :         return true;
      27       53126 :     return poOpenInfo->fpL != nullptr &&
      28        2757 :            poOpenInfo->nHeaderBytes >=
      29       53126 :                static_cast<int>(sizeof(KTX2Signature)) &&
      30        2548 :            memcmp(poOpenInfo->pabyHeader, KTX2Signature,
      31       50369 :                   sizeof(KTX2Signature)) == 0;
      32             : }
      33             : 
      34             : /************************************************************************/
      35             : /*                      KTX2DriverSetCommonMetadata()                   */
      36             : /************************************************************************/
      37             : 
      38        1303 : void KTX2DriverSetCommonMetadata(GDALDriver *poDriver)
      39             : {
      40        1303 :     poDriver->SetDescription(KTX2_DRIVER_NAME);
      41        1303 :     poDriver->SetMetadataItem(GDAL_DCAP_RASTER, "YES");
      42        1303 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME, "KTX2 texture format");
      43        1303 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/raster/ktx2.html");
      44        1303 :     poDriver->SetMetadataItem(GDAL_DMD_EXTENSION, "ktx2");
      45        1303 :     poDriver->SetMetadataItem(GDAL_DMD_CREATIONDATATYPES, "Byte");
      46             : 
      47        1303 :     poDriver->SetMetadataItem(GDAL_DCAP_VIRTUALIO, "YES");
      48             : 
      49        1303 :     poDriver->SetMetadataItem(
      50             :         GDAL_DMD_CREATIONOPTIONLIST,
      51        2606 :         GDAL_KTX2_BASISU_GetCreationOptions(/* bIsKTX2 = */ true).c_str());
      52             : 
      53        1303 :     poDriver->pfnIdentify = KTX2DriverIdentify;
      54        1303 :     poDriver->SetMetadataItem(GDAL_DCAP_OPEN, "YES");
      55        1303 :     poDriver->SetMetadataItem(GDAL_DCAP_CREATECOPY, "YES");
      56        1303 : }
      57             : 
      58             : /************************************************************************/
      59             : /*                     DeclareDeferredKTX2Plugin()                      */
      60             : /************************************************************************/
      61             : 
      62             : #ifdef PLUGIN_FILENAME
      63        1595 : void DeclareDeferredKTX2Plugin()
      64             : {
      65        1595 :     if (GDALGetDriverByName(KTX2_DRIVER_NAME) != nullptr)
      66             :     {
      67         302 :         return;
      68             :     }
      69        1293 :     auto poDriver = new GDALPluginDriverProxy(PLUGIN_FILENAME);
      70             : #ifdef PLUGIN_INSTALLATION_MESSAGE
      71             :     poDriver->SetMetadataItem(GDAL_DMD_PLUGIN_INSTALLATION_MESSAGE,
      72             :                               PLUGIN_INSTALLATION_MESSAGE);
      73             : #endif
      74        1293 :     KTX2DriverSetCommonMetadata(poDriver);
      75        1293 :     GetGDALDriverManager()->DeclareDeferredPluginDriver(poDriver);
      76             : }
      77             : #endif