#ifndef _AVUTIL_ERROR_H_ade662d3_
#define _AVUTIL_ERROR_H_ade662d3_

/*
 * This file was stolen from ffmpeg and modified for usability here.
 *  The original does not have a "copyright by" line.
 *
 * This version is a derivative work of that version.  It is not free
 *  software; it is licensed under the GNU Lesser General Public
 *  License version 2.1, which places nontrivial restrictions on what
 *  may be done with it.  (I'm not terribly happy about that, but for
 *  my purposes accepting LGPL-infected code is a lower price than
 *  reimplementing it all myself.)
 *
 * The LGPL v2.1 as distributed with ffmpeg is in the accompanying file
 *  `LGPL-v2.1'.
 */

#include <sys/types.h>

#include "avutil-common.h"

#if 0

#include <errno.h>
#include "avutil.h"

#endif

/**
 * @addtogroup lavu_error
 *
 * @{
 */


/* error handling */
#if EDOM > 0
#define AVERROR(e) (-(e))   ///< Returns a negative error code from a POSIX error code, to return from library functions.
#define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value.
#else
/* Some platforms have E* and errno already negated. */
#define AVERROR(e) (e)
#define AVUNERROR(e) (e)
#endif

#define AVERROR_BSF_NOT_FOUND      (-MKTAG(0xF8,'B','S','F')) ///< Bitstream filter not found
#define AVERROR_BUG                (-MKTAG( 'B','U','G','!')) ///< Internal bug, also see AVERROR_BUG2
#define AVERROR_DECODER_NOT_FOUND  (-MKTAG(0xF8,'D','E','C')) ///< Decoder not found
#define AVERROR_DEMUXER_NOT_FOUND  (-MKTAG(0xF8,'D','E','M')) ///< Demuxer not found
#define AVERROR_ENCODER_NOT_FOUND  (-MKTAG(0xF8,'E','N','C')) ///< Encoder not found
#define AVERROR_EOF                (-MKTAG( 'E','O','F',' ')) ///< End of file
#define AVERROR_EXIT               (-MKTAG( 'E','X','I','T')) ///< Immediate exit was requested; the called function should not be restarted
#define AVERROR_FILTER_NOT_FOUND   (-MKTAG(0xF8,'F','I','L')) ///< Filter not found
#define AVERROR_INVALIDDATA        (-MKTAG( 'I','N','D','A')) ///< Invalid data found when processing input
#define AVERROR_MUXER_NOT_FOUND    (-MKTAG(0xF8,'M','U','X')) ///< Muxer not found
#define AVERROR_OPTION_NOT_FOUND   (-MKTAG(0xF8,'O','P','T')) ///< Option not found
#define AVERROR_PATCHWELCOME       (-MKTAG( 'P','A','W','E')) ///< Not yet implemented in FFmpeg, patches welcome
#define AVERROR_PROTOCOL_NOT_FOUND (-MKTAG(0xF8,'P','R','O')) ///< Protocol not found
#define AVERROR_STREAM_NOT_FOUND   (-MKTAG(0xF8,'S','T','R')) ///< Stream not found

/**
 * This is semantically identical to AVERROR_BUG
 * it has been introduced in Libav after our AVERROR_BUG and with a modified value.
 */
#define AVERROR_BUG2               (-MKTAG( 'B','U','G',' '))
#define AVERROR_UNKNOWN            (-MKTAG( 'U','N','K','N')) ///< Unknown error, typically from an external library

/**
 * Put a description of the AVERROR code errnum in errbuf.
 * In case of failure the global variable errno is set to indicate the
 * error. Even in case of failure av_strerror() will print a generic
 * error message indicating the errnum provided to errbuf.
 *
 * @param errnum      error code to describe
 * @param errbuf      buffer to which description is written
 * @param errbuf_size the size in bytes of errbuf
 * @return 0 on success, a negative value if a description for errnum
 * cannot be found
 */
int av_strerror(int errnum, char *errbuf, size_t errbuf_size);

/**
 * @}
 */

#endif