/*
    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

/** @file  src/util.h
 *  @brief Utility methods.
 */

#include <string>
#include <stdint.h>
#include <boost/signals2.hpp>
#include <openjpeg.h>
#include "types.h"

namespace libdcp {

class ARGBFrame;	
	
/** Create a UUID.
 *  @return UUID.
 */
extern std::string make_uuid ();

/** Create a digest for a file.
 *  @param filename File name.
 *  @param progress If non-0, a signal which will be emitted periodically to update
 *  progress; the parameter will start at 0.5 and proceed to 1.
 *  @return Digest.
 */
extern std::string make_digest (std::string filename, boost::signals2::signal<void (float)>* progress);

extern std::string content_kind_to_string (ContentKind kind);
extern ContentKind content_kind_from_string (std::string kind);
extern bool starts_with (std::string big, std::string little);
extern bool ends_with (std::string big, std::string little);
extern bool empty_or_white_space (std::string s);

extern opj_image_t* decompress_j2k (uint8_t* data, int64_t size, int reduce);
extern boost::shared_ptr<ARGBFrame> xyz_to_rgb (opj_image_t* xyz_frame);

}