1 files changed, 72 insertions, 0 deletions
diff --git a/include/libavutil/error.h b/include/libavutil/error.h
new file mode 100644
index 00000000..13a9a359
--- /dev/null
+++ b/include/libavutil/error.h
@@ -0,0 +1,72 @@
+/*
+ * 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
+ * error code definitions
+ */
+
+#ifndef AVUTIL_ERROR_H
+#define AVUTIL_ERROR_H
+
+#include <errno.h>
+#include "avutil.h"
+
+/* 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
+
+#if LIBAVUTIL_VERSION_MAJOR < 51
+#define AVERROR_INVALIDDATA AVERROR(EINVAL)  ///< Invalid data found when processing input
+#define AVERROR_IO          AVERROR(EIO)     ///< I/O error
+#define AVERROR_NOENT       AVERROR(ENOENT)  ///< No such file or directory
+#define AVERROR_NOFMT       AVERROR(EILSEQ)  ///< Unknown format
+#define AVERROR_NOMEM       AVERROR(ENOMEM)  ///< Not enough memory
+#define AVERROR_NOTSUPP     AVERROR(ENOSYS)  ///< Operation not supported
+#define AVERROR_NUMEXPECTED AVERROR(EDOM)    ///< Number syntax expected in filename
+#define AVERROR_UNKNOWN     AVERROR(EINVAL)  ///< Unknown error
+#endif
+
+#define AVERROR_EOF         AVERROR(EPIPE)   ///< End of file
+
+#define AVERROR_PATCHWELCOME    (-MKTAG('P','A','W','E')) ///< Not yet implemented in FFmpeg, patches welcome
+
+#if LIBAVUTIL_VERSION_MAJOR > 50
+#define AVERROR_INVALIDDATA     (-MKTAG('I','N','D','A')) ///< Invalid data found when processing input
+#define AVERROR_NUMEXPECTED     (-MKTAG('N','U','E','X')) ///< Number syntax expected in filename
+#endif
+
+/**
+ * Puts 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 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 /* AVUTIL_ERROR_H */