nengel@2: /*
nengel@2:  * This file is part of FFmpeg.
nengel@2:  *
nengel@2:  * FFmpeg is free software; you can redistribute it and/or
nengel@2:  * modify it under the terms of the GNU Lesser General Public
nengel@2:  * License as published by the Free Software Foundation; either
nengel@2:  * version 2.1 of the License, or (at your option) any later version.
nengel@2:  *
nengel@2:  * FFmpeg is distributed in the hope that it will be useful,
nengel@2:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nengel@2:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
nengel@2:  * Lesser General Public License for more details.
nengel@2:  *
nengel@2:  * You should have received a copy of the GNU Lesser General Public
nengel@2:  * License along with FFmpeg; if not, write to the Free Software
nengel@2:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
nengel@2:  */
nengel@2: 
nengel@2: /**
nengel@2:  * @file
nengel@2:  * error code definitions
nengel@2:  */
nengel@2: 
nengel@2: #ifndef AVUTIL_ERROR_H
nengel@2: #define AVUTIL_ERROR_H
nengel@2: 
nengel@2: #include <errno.h>
nengel@2: #include "common.h"
nengel@2: 
nengel@2: /* error handling */
nengel@2: #if EDOM > 0
nengel@2: #define AVERROR(e) (-(e))   ///< Returns a negative error code from a POSIX error code, to return from library functions.
nengel@2: #define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value.
nengel@2: #else
nengel@2: /* Some platforms have E* and errno already negated. */
nengel@2: #define AVERROR(e) (e)
nengel@2: #define AVUNERROR(e) (e)
nengel@2: #endif
nengel@2: 
nengel@2: #define AVERROR_EOF         AVERROR(EPIPE)   ///< End of file
nengel@2: 
nengel@2: 
nengel@2: /**
nengel@2:  * Puts a description of the AVERROR code errnum in errbuf.
nengel@2:  * In case of failure the global variable errno is set to indicate the
nengel@2:  * error.
nengel@2:  *
nengel@2:  * @param errbuf_size the size in bytes of errbuf
nengel@2:  * @return 0 on success, a negative value otherwise
nengel@2:  */
nengel@2: int av_strerror(int errnum, char *errbuf, size_t errbuf_size);
nengel@2: 
nengel@2: #endif /* AVUTIL_ERROR_H */