/*
 * pgmio.h
 *
 *  Created on: Oct 31, 2019
 *      Author: lutton
 */

#ifndef PGMIO_H_
#define PGMIO_H_

#ifdef __cplusplus
extern "C"{
#endif

typedef struct file_node {
	char file_name[256];
	char file_path[1024];
	struct file_node *next;
} file_node_t;

typedef enum {DIM_COLUMNS, DIM_ROWS, DIM_SLICES} dim_idx;

file_node_t * get_pgm_files(char path[]); // returns a list of pgm file names in the directory path, or nothing if no files were found

int * get_pgm_dimensions(char path[]); // returns the dimensions of an image

int get_pgm_size(char path[]); // returns the size of an image

int get_pgm_dimension(char path[], dim_idx dim); // returns the size of the image at location path in in dimension dim

unsigned char * pgm_read(char path[]); // returns image from pgm file from the given path, or NULL if error

int pgm_write(unsigned char *img, char path[], int dims[]); // writes img to pgm file to the given path, returns 0 if no error

#ifdef __cplusplus
}
#endif

#endif /* PGMIO_H_ */