Move error code definitions from libavcodec/avcodec.h to

libavutil/error.h.

Error code definitions and handling code belong to libavutil, where
they can be shared by all the libav* libraries.

See the thread:
Subject: [FFmpeg-devel] [PATCH] Move error codes definitions from lavc to lavu
Date: Sun, 19 Jul 2009 12:09:16 +0200

Originally committed as revision 22501 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 47 insertions, 0 deletions

diff --git a/libavutil/error.h b/libavutil/error.h
new file mode 100644
index 0000000000..f37655b1fe
--- /dev/null
+++ b/libavutil/error.h
@@ -0,0 +1,47 @@
+/*
+ * 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
+ */
+
+/**
+ * @file libavutil/error.h
+ * error code definitions
+ */
+
+#ifndef AVUTIL_ERROR_H
+#define AVUTIL_ERROR_H
+
+/* error handling */
+#if EINVAL > 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_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
+#define AVERROR_IO          AVERROR(EIO)     /**< I/O error */
+#define AVERROR_NUMEXPECTED AVERROR(EDOM)    /**< Number syntax expected in filename. */
+#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
+#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
+#define AVERROR_NOFMT       AVERROR(EILSEQ)  /**< unknown format */
+#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  /**< Operation not supported. */
+#define AVERROR_NOENT       AVERROR(ENOENT)  /**< No such file or directory. */
+#define AVERROR_EOF         AVERROR(EPIPE)   /**< End of file. */
+#define AVERROR_PATCHWELCOME    -MKTAG('P','A','W','E') /**< Not yet implemented in FFmpeg. Patches welcome. */
+
+#endif /* AVUTIL_ERROR_H */