Add simple program to open files using code in file.c

Makefile

@@ -13,6 +13,10 @@ plugin: $(BUILD_DIR)/plugin.o $(BUILD_DIR)/file.o $(BUILD_DIR)/err.o
 	mkdir -p $(BUILD_DIR)
 	$(CC) $(CFLAGS) -shared $^ -o $(BUILD_DIR)/plugin.so
 
+example: $(BUILD_DIR)/test.o $(BUILD_DIR)/file.o $(BUILD_DIR)/err.o
+	mkdir -p $(BUILD_DIR)
+	$(CC) $(CFLAGS) $^ -o $(BUILD_DIR)/example
+
 .PHONY: clean
 clean:
 	rm -r $(BUILD_DIR)

src/test.c

@@ -0,0 +1,104 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <hdf5.h>
+#include "file.h"
+#include "err.h"
+
+
+void apply_mask(int *data, int *mask, int size) {
+	int *dptr, *mptr;
+	dptr = data;
+	mptr = mask;
+	while (dptr < data + size && mptr < mask + size) {
+		if (*mptr & 0x01) *dptr = -1;
+		if (*mptr & 0xFE) *dptr = -2;
+		dptr++;
+		mptr++;
+	}
+}
+
+
+int parse_args(int argc, char **argv, char **file_name, int *frame_idx) {
+	int retval = 0;
+	if (argc == 2) {
+		*frame_idx = 0;
+		*file_name = argv[1];
+	} else if (argc >= 2) {
+		*file_name = argv[1];
+		*frame_idx = atoi(argv[2]);
+	} else {
+		ERROR_JUMP(-1, done, "Require filename argument");
+	}
+done:
+	return retval;
+}
+
+
+int main(int argc, char **argv) {
+	int err = 0;
+	int retval = 0;
+	char *test_file = "";
+	struct data_description_t desc = {0};
+	struct dataset_properties_t prop = {0};
+	int dims[3] = {0};
+	hid_t fid = 0;
+	int frame_idx = 0;
+	int *mask = NULL;
+	int *data = NULL;
+
+	reset_error_stack();
+
+	if (parse_args(argc, argv, &test_file, &frame_idx) < 0) {
+		ERROR_JUMP(-1, done, "Failure parsing arguments");
+	}
+
+	fid = H5Fopen(test_file, H5F_ACC_RDONLY, H5P_DEFAULT);
+	if (fid < 0) ERROR_JUMP(-1, done, "Error opening file");
+
+	err = extract_detector_info(fid, &desc, &prop);
+	if (err < 0) {
+		ERROR_JUMP(err, done, "");
+	}
+	dims[0] = prop.dims[0];
+	dims[1] = prop.dims[1];
+	dims[2] = prop.dims[2];
+
+	printf("Dims: %d, %d, %d\n", dims[0], dims[1], dims[2]);
+
+	mask = malloc(dims[1] * dims[2] * sizeof(*mask));
+	if (!mask) {
+		ERROR_JUMP(err, done, "Failed to allocate space for pixel mask");
+	}
+	err = desc.get_pixel_mask(&desc, mask);
+	if (err < 0) {
+		ERROR_JUMP(err, done, "");
+	}
+
+	data = malloc(dims[1] * dims[2] * sizeof(*data));
+	err = desc.get_data_frame(&desc, &prop, frame_idx, sizeof(*data), data);
+	if (err < 0) {
+		ERROR_JUMP(err, done, "");
+	}
+
+	apply_mask(data, mask, dims[1] * dims[2]);
+	{
+		int i, j;
+		int max_i = 30;
+		int max_j = 10;
+		max_j = max_j < dims[1] ? max_j : dims[1];
+		max_i = max_i < dims[2] ? max_i : dims[2];
+		for (j = 0; j < max_j; j++) {
+			for (i = 0; i < max_i; i++) {
+				printf("%3d ", data[i + j*dims[2]]);
+			}
+			printf("\n");
+		}
+	}
+
+done:
+	if (fid > 0) H5Fclose(fid);
+	if (data) free(data);
+	if (mask) free(mask);
+	if (retval != 0) dump_error_stack(stderr);
+	return retval;
+}