ECC-1467: Revert changes in the unpack_double_element_set() function

src/grib_accessor_class_data_ccsds_packing.cc

@@ -669,49 +669,14 @@ static int unpack_double_element_set(grib_accessor* a, const size_t* index_array
         if (index_array[i] > size) return GRIB_INVALID_ARGUMENT;
     }
 
-    //values = (double*)grib_context_malloc_clear(a->context, size * sizeof(double));
-    //err    = grib_get_double_array(grib_handle_of_accessor(a), "codedValues", values, &size);
-    //if (err) {
-    //    grib_context_free(a->context, values);
-    //    return err;
-    //}
-    //for (i = 0; i < len; i++) {
-    //    val_array[i] = values[index_array[i]];
-    //}
-
-    std::vector<size_t> rsi_table;
-
-    struct Redirection {
-        size_t buf_pos; // position in the buffer
-        size_t idx; // user-requested data
-    };
-
-    struct RsiBucket {
-        size_t rsi_idx;
-        std::vector<Redirection> redicrections;
-    };
-
-    unsigned char* buf = NULL;
-    size_t buflen = 0;
-
-    buflen = grib_byte_count(a);
-    buf = (unsigned char*)hand->buffer->data;
-    buf += grib_byte_offset(a);
-
-    size_t rsi_size = rsi * block_size;
-    std::vector<RsiBucket> buckets = create_buckets(index_array, rsi, block_size);
-
-    aec_stream strm;
-    strm.flags           = ccsds_flags;
-    strm.bits_per_sample = bits_per_value;
-    strm.block_size      = ccsds_block_size;
-    strm.rsi             = ccsds_rsi;
-
-    for (auto bucket: buckets) {
-        unsigned char* rsi = aec_rsi_at(&strm, rsi_table[bucket.rsi_idx]);
-        for (auto r: bucket.redirections) {
-            values[bucket.pos] = rsi[bucket.idx - bucket.rsi_idx * rsi_size];
-        }
+    values = (double*)grib_context_malloc_clear(a->context, size * sizeof(double));
+    err    = grib_get_double_array(grib_handle_of_accessor(a), "codedValues", values, &size);
+    if (err) {
+        grib_context_free(a->context, values);
+        return err;
+    }
+    for (i = 0; i < len; i++) {
+        val_array[i] = values[index_array[i]];
     }
 
     grib_context_free(a->context, values);