error.h

См. документацию.

/*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 
#ifndef AVUTIL_ERROR_H
#define AVUTIL_ERROR_H
 
#include <errno.h>
#include <stddef.h>
 
/* error handling */
#if EDOM > 0
#define AVERROR(e) (-(e))   
#define AVUNERROR(e) (-(e)) 
#else
/* Some platforms have E* and errno already negated. */
#define AVERROR(e) (e)
#define AVUNERROR(e) (e)
#endif
 
#define FFERRTAG(a, b, c, d) (-(int)MKTAG(a, b, c, d))
 
#define AVERROR_BSF_NOT_FOUND      FFERRTAG(0xF8,'B','S','F') 
#define AVERROR_BUG                FFERRTAG( 'B','U','G','!') 
#define AVERROR_BUFFER_TOO_SMALL   FFERRTAG( 'B','U','F','S') 
#define AVERROR_DECODER_NOT_FOUND  FFERRTAG(0xF8,'D','E','C') 
#define AVERROR_DEMUXER_NOT_FOUND  FFERRTAG(0xF8,'D','E','M') 
#define AVERROR_ENCODER_NOT_FOUND  FFERRTAG(0xF8,'E','N','C') 
#define AVERROR_EOF                FFERRTAG( 'E','O','F',' ') 
#define AVERROR_EXIT               FFERRTAG( 'E','X','I','T') 
#define AVERROR_EXTERNAL           FFERRTAG( 'E','X','T',' ') 
#define AVERROR_FILTER_NOT_FOUND   FFERRTAG(0xF8,'F','I','L') 
#define AVERROR_INVALIDDATA        FFERRTAG( 'I','N','D','A') 
#define AVERROR_MUXER_NOT_FOUND    FFERRTAG(0xF8,'M','U','X') 
#define AVERROR_OPTION_NOT_FOUND   FFERRTAG(0xF8,'O','P','T') 
#define AVERROR_PATCHWELCOME       FFERRTAG( 'P','A','W','E') 
#define AVERROR_PROTOCOL_NOT_FOUND FFERRTAG(0xF8,'P','R','O') 
 
#define AVERROR_STREAM_NOT_FOUND   FFERRTAG(0xF8,'S','T','R') 
 
#define AVERROR_BUG2               FFERRTAG( 'B','U','G',' ')
#define AVERROR_UNKNOWN            FFERRTAG( 'U','N','K','N') 
#define AVERROR_EXPERIMENTAL       (-0x2bb2afa8) 
#define AVERROR_INPUT_CHANGED      (-0x636e6701) 
#define AVERROR_OUTPUT_CHANGED     (-0x636e6702) 
/* HTTP & RTSP errors */
#define AVERROR_HTTP_BAD_REQUEST   FFERRTAG(0xF8,'4','0','0')
#define AVERROR_HTTP_UNAUTHORIZED  FFERRTAG(0xF8,'4','0','1')
#define AVERROR_HTTP_FORBIDDEN     FFERRTAG(0xF8,'4','0','3')
#define AVERROR_HTTP_NOT_FOUND     FFERRTAG(0xF8,'4','0','4')
#define AVERROR_HTTP_OTHER_4XX     FFERRTAG(0xF8,'4','X','X')
#define AVERROR_HTTP_SERVER_ERROR  FFERRTAG(0xF8,'5','X','X')
 
#define AV_ERROR_MAX_STRING_SIZE 64
 
int av_strerror(int errnum, char *errbuf, size_t errbuf_size);
 
static inline char *av_make_error_string(char *errbuf, size_t errbuf_size, int errnum)
{
    av_strerror(errnum, errbuf, errbuf_size);
    return errbuf;
}
 
#define av_err2str(errnum) \
    av_make_error_string((char[AV_ERROR_MAX_STRING_SIZE]){0}, AV_ERROR_MAX_STRING_SIZE, errnum)
 
#endif /* AVUTIL_ERROR_H */