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Merge pull request #272 from ecmwf/bugfix/ecc-1968_complex_24bit_workaround 

ECC-1968: GRIB2 grid_complex_spatial_differencing: Encoding with bitsPerValue=24 fails
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shahramn 2024-11-19 14:37:02 +00:00 committed by GitHub
parent c8bb0c26fc 78b5dca552
commit 95d7070924
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GPG Key ID: B5690EEEBB952194
3 changed files with 16 additions and 3 deletions
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9
src/accessor/grib_accessor_class_data_g22order_packing.cc
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@ -808,6 +808,13 @@ int grib_accessor_data_g22order_packing_t::pack_double(const double* val, size_t
if ((err = grib_get_long_internal(gh, bits_per_value_, &bits_per_value)) != GRIB_SUCCESS)
return err;
// ECC-1968: For bits_per_value > 23, the complex packing algorithm may use more than 25 bits per value.
// However, this exceeds the maximum number of bits for the packing algorithm.
if (bits_per_value > 23) {
bits_per_value = 23;
}
if ((err = grib_get_long_internal(gh, decimal_scale_factor_, &decimal_scale_factor)) != GRIB_SUCCESS)
return err;
@ -1463,7 +1470,7 @@ template <typename T>
int grib_accessor_data_g22order_packing_t::unpack(T* val, size_t* len)
{
static_assert(std::is_floating_point<T>::value, "Requires floating points numbers");
grib_handle* gh = grib_handle_of_accessor(this);
grib_handle* gh = grib_handle_of_accessor(this);
size_t i = 0;
size_t j = 0;

4
src/action_class_when.cc
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@ -188,8 +188,8 @@ static int notify_change(grib_action* a, grib_accessor* observer, grib_accessor*
#ifdef CHECK_LOOP
if (self->loop) {
printf("LOOP detected...\n");
printf("WHEN triggered by %s %ld\n", observed->name, lres);
grib_expression_print(observed->context, self->expression, 0, stderr);
printf("WHEN triggered by %s %ld\n", observed->name_, lres);
grib_expression_print(observed->context_, self->expression, 0, stderr);
fprintf(stderr, "\n");
return ret;
}

6
tests/grib_bitmap.sh
View File

@ -246,6 +246,12 @@ ${tools_dir}/grib_set -r -s packingType=grid_complex_spatial_differencing $temp2
stats=`${tools_dir}/grib_get -F%.2f -p max,min,avg $temp2`
[ "$stats" = '549.61 11.61 203.28' ]
# ECC-1968
# ---------
in=${data_dir}/grid_complex_spatial_differencing.grib2
${tools_dir}/grib_set -s setBitsPerValue=25 $in $temp2
${tools_dir}/grib_get -p bitsPerValue $temp2
# Clean up for ECC-1858
rm -f $in_with_bitmap $in_no_bitmap
rm -f $tempSimple