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Resolving returning error for Transform and RasterIO functions

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This commit is contained in:
doinachiroiu 2020-09-24 14:16:33 +00:00
parent db7fc0aa53
commit 56649c5513
1 changed files with 18 additions and 5 deletions
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23
oss-internship-2020/gdal/raster.cc
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@ -98,8 +98,16 @@ absl::Status GdalMain(std::string filename) {
sapi::v::Array<double> adfGeoTransformArray(&adf_geo_transform[0], sapi::v::Array<double> adfGeoTransformArray(&adf_geo_transform[0],
adf_geo_transform.size()); adf_geo_transform.size());
api.GDALGetGeoTransform(&ptr_dataset, adfGeoTransformArray.PtrBoth()) // For this function that returns CPLErr, the error-handling must be done
.IgnoreError(); // analyzing the returning object.
// Same for GDALReturnsIO from below.
CPLErr err;
SAPI_ASSIGN_OR_RETURN(err, api.GDALGetGeoTransform(&ptr_dataset, adfGeoTransformArray.PtrBoth()));
// If GDALGetGeoTransform generates an error.
if (err != CE_None) {
return absl::CancelledError();
}
LOG(INFO) << "Origin = (" << adf_geo_transform[0] << ", " LOG(INFO) << "Origin = (" << adf_geo_transform[0] << ", "
<< adf_geo_transform[3] << ")" << std::endl; << adf_geo_transform[3] << ")" << std::endl;
@ -137,10 +145,15 @@ absl::Status GdalMain(std::string filename) {
std::vector<int8_t> raster_data(nX_size.value() * nY_size.value(), -1); std::vector<int8_t> raster_data(nX_size.value() * nY_size.value(), -1);
sapi::v::Array<int8_t> raster_data_array(&raster_data[0], raster_data.size()); sapi::v::Array<int8_t> raster_data_array(&raster_data[0], raster_data.size());
api.GDALRasterIO(&ptr_band, GF_Read, 0, 0, nX_size.value(), nY_size.value(), // We will use CPLErr type of returning value, as before with GDALGetGeoTransorm.
SAPI_ASSIGN_OR_RETURN(err, api.GDALRasterIO(&ptr_band, GF_Read, 0, 0, nX_size.value(), nY_size.value(),
raster_data_array.PtrBoth(), nX_size.value(), raster_data_array.PtrBoth(), nX_size.value(),
nY_size.value(), GDT_Byte, 0, 0) nY_size.value(), GDT_Byte, 0, 0));
.IgnoreError();
// If GDALRasterIO generates an error.
if (err != CE_None) {
return absl::CancelledError();
}
std::cout << "Raster data info: " << raster_data_array.ToString() std::cout << "Raster data info: " << raster_data_array.ToString()
<< std::endl; << std::endl;