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ffmpeg / libavutil / error.h @ 7c074320

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/*
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file libavutil/error.h
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 * error code definitions
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 */
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#ifndef AVUTIL_ERROR_H
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#define AVUTIL_ERROR_H
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/* error handling */
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#if EINVAL > 0
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#define AVERROR(e) (-(e)) /**< Returns a negative error code from a POSIX error code, to return from library functions. */
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#define AVUNERROR(e) (-(e)) /**< Returns a POSIX error code from a library function error return value. */
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#else
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/* Some platforms have E* and errno already negated. */
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#define AVERROR(e) (e)
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#define AVUNERROR(e) (e)
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#endif
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#if LIBAVUTIL_VERSION_MAJOR < 51
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#define AVERROR_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
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#define AVERROR_IO          AVERROR(EIO)     /**< I/O error */
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#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
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#endif
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#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< Number syntax expected in filename. */
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#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
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#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
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#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< Operation not supported. */
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#define AVERROR_NOENT       AVERROR(ENOENT)  /**< No such file or directory. */
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#define AVERROR_EOF         AVERROR(EPIPE)   /**< End of file. */
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#define AVERROR_PATCHWELCOME    (-MKTAG('P','A','W','E')) /**< Not yet implemented in FFmpeg. Patches welcome. */
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#endif /* AVUTIL_ERROR_H */