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Mechanism to read bitshuffle-compressed pixel-mask data - by

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loading/using the normal bitshuffle source from

  https://github.com/kiyo-masui/bitshuffle

(see Makefile).
This commit is contained in:
Clemens Vonrhein
2024-12-16 15:05:38 +00:00
parent 44ba3cd278
commit 4cf18ceff4
3 changed files with 53 additions and 3 deletions
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src/file.c
+25 -1
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@@ -573,9 +573,33 @@ int get_dectris_eiger_pixel_mask(const struct ds_desc_t *desc, int *buffer) {
ERROR_JUMP(-1, done, "Error opening detectorSpecific/pixel_mask");
}
// what if this is compressed?
hid_t dcpl = H5Dget_create_plist(ds_id);
int n_filters = H5Pget_nfilters(dcpl);
H5Z_filter_t filter_id;
if (n_filters>0) {
unsigned int flags;
size_t nelmts = 1;
unsigned int values_out[1] = {99};
char filter_name[80];
filter_id = H5Pget_filter(dcpl, (unsigned) 0, &flags, &nelmts, values_out, sizeof(filter_name), filter_name, NULL);
if (filter_id>=0) {
fprintf(stderr," filter name =\"%s\"\n",filter_name);
}
}
err = H5Dread(ds_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buffer);
if (err < 0) {
ERROR_JUMP(-1, close_dataset, "Error reading detectorSpecific/pixel_mask");
if (n_filters>0) {
ERROR_JUMP(-1, close_dataset, "Error reading detectorSpecific/pixel_mask with filter(s)");
}
else {
ERROR_JUMP(-1, close_dataset, "Error reading detectorSpecific/pixel_mask");
}
}
if (H5Zfilter_avail(BS_H5_FILTER_ID)) {
fprintf(stderr," bitshuffle filter is available now since H5Dread (of pixel-mask) triggered loading of the filter.\n");
}
close_dataset: