Write an HDF5 file

1 files changed, 76 insertions, 0 deletions

diff --git a/src/hdf5-file.c b/src/hdf5-file.c
new file mode 100644
index 00000000..2992357d
--- /dev/null
+++ b/src/hdf5-file.c
@@ -0,0 +1,76 @@
+/*
+ * hdf5.c
+ *
+ * Read/write HDF5 data files
+ *
+ * (c) 2006-2009 Thomas White <thomas.white@desy.de>
+ *
+ * template_index - Indexing diffraction patterns by template matching
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <hdf5.h>
+
+
+int hdf5_write(const char *filename, const uint16_t *data,
+               int width, int height)
+{
+	hid_t fh, gh, sh, dh;	/* File, group, dataspace and data handles */
+	herr_t r;
+	hsize_t size[2];
+	hsize_t max_size[2];
+
+	fh = H5Fcreate(filename, H5F_ACC_EXCL, H5P_DEFAULT, H5P_DEFAULT);
+	if ( fh < 0 ) {
+		fprintf(stderr, "Couldn't create file: %s\n", filename);
+		return 1;
+	}
+
+	gh = H5Gcreate(fh, "data", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+	if ( gh < 0 ) {
+		fprintf(stderr, "Couldn't create group\n");
+		H5Fclose(fh);
+		return 1;
+	}
+
+	size[0] = width;
+	size[1] = height;
+	max_size[0] = width;
+	max_size[1] = height;
+	sh = H5Screate_simple(2, size, max_size);
+
+	dh = H5Dcreate(gh, "data", H5T_NATIVE_UINT16, sh,
+	               H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+	if ( dh < 0 ) {
+		fprintf(stderr, "Couldn't create dataset\n");
+		H5Fclose(fh);
+		return 1;
+	}
+
+	/* Muppet check */
+	H5Sget_simple_extent_dims(sh, size, max_size);
+	printf("Data dimensions %i %i (max %i %i)\n",
+	                           (int)size[1], (int)size[0],
+	                           (int)max_size[1], (int)max_size[0]);
+
+	r = H5Dwrite(dh, H5T_NATIVE_UINT16, H5S_ALL,
+	             H5S_ALL, H5P_DEFAULT, data);
+	if ( r < 0 ) {
+		fprintf(stderr, "Couldn't write data\n");
+		H5Dclose(dh);
+		H5Fclose(fh);
+		return 1;
+	}
+
+	H5Fclose(fh);
+
+	return 0;
+}