GDALOpen return null on GEOTiff file

Question

I'm trying to open GEOTiff image with gdal library. My code:

GDALDatasetH hSrcDS = GDALOpen("/home/gamma/srtm_55_01.tif", GA_ReadOnly);
if (hSrcDS == nullptr)
    printf("failure");
else
    printf("success");

And this is output:

ERROR 4: `/home/gamma/srtm_55_01.tif' not recognized as a supported file format.
failure

Also I tried using relative path but it didn't work too.

File "/home/gamma/srtm_55_01.tif" exists and was download from here (srtm_55_01).

I thought maybe I'd made a mistake after all. I looked at the sources gdal_contour and there the code is EXACTLY the same.

Moreover, I tried to use gdal_contour on my file - everything was successful.

gamma@gamma:~$ gdalinfo --version
GDAL 2.2.3, released 2017/11/20

Answer 1

Try to follow the following order for opening the raster files

  /* register all known GDAL drivers.
   * attempt to suppress GDAL warnings.
   */

  GDALAllRegister();
  CPLPushErrorHandler(CPLQuietErrorHandler);
 /* -------------------------------------------------------------------- */
 /*      Open source raster file.                                        */
 /* -------------------------------------------------------------------- */
    GDALDatasetH hSrcDS = GDALOpen(pszSrcFilename, GA_ReadOnly);
    if( hSrcDS == nullptr )
        exit( 2 );

    GDALRasterBandH hBand = GDALGetRasterBand( hSrcDS, nBandIn );
    if( hBand == nullptr )
    {
        CPLError( CE_Failure, CPLE_AppDefined,
                  "Band %d does not exist on dataset.",
                  nBandIn );
        exit(2);
    }

    if( !bNoDataSet && !bIgnoreNoData )
        dfNoData = GDALGetRasterNoDataValue( hBand, &bNoDataSet );