/*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavutil/error.h
+ * @file
* error code definitions
*/
#ifndef AVUTIL_ERROR_H
#define AVUTIL_ERROR_H
+#include <errno.h>
+#include "avutil.h"
+
+/**
+ * @addtogroup lavu_error
+ *
+ * @{
+ */
+
+
/* 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. */
+#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_IO AVERROR(EIO) /**< I/O error */
-#define AVERROR_NOMEM AVERROR(ENOMEM) /**< not enough memory */
-#define AVERROR_UNKNOWN AVERROR(EINVAL) /**< unknown error */
-#endif
+#define AVERROR_BSF_NOT_FOUND (-MKTAG(0xF8,'B','S','F')) ///< Bitstream filter not found
+#define AVERROR_DECODER_NOT_FOUND (-MKTAG(0xF8,'D','E','C')) ///< Decoder not found
+#define AVERROR_DEMUXER_NOT_FOUND (-MKTAG(0xF8,'D','E','M')) ///< Demuxer not found
+#define AVERROR_ENCODER_NOT_FOUND (-MKTAG(0xF8,'E','N','C')) ///< Encoder not found
+#define AVERROR_EOF (-MKTAG( 'E','O','F',' ')) ///< End of file
+#define AVERROR_EXIT (-MKTAG( 'E','X','I','T')) ///< Immediate exit was requested; the called function should not be restarted
+#define AVERROR_FILTER_NOT_FOUND (-MKTAG(0xF8,'F','I','L')) ///< Filter not found
+#define AVERROR_INVALIDDATA (-MKTAG( 'I','N','D','A')) ///< Invalid data found when processing input
+#define AVERROR_MUXER_NOT_FOUND (-MKTAG(0xF8,'M','U','X')) ///< Muxer not found
+#define AVERROR_OPTION_NOT_FOUND (-MKTAG(0xF8,'O','P','T')) ///< Option not found
+#define AVERROR_PATCHWELCOME (-MKTAG( 'P','A','W','E')) ///< Not yet implemented in Libav, patches welcome
+#define AVERROR_PROTOCOL_NOT_FOUND (-MKTAG(0xF8,'P','R','O')) ///< Protocol not found
+#define AVERROR_STREAM_NOT_FOUND (-MKTAG(0xF8,'S','T','R')) ///< Stream not found
+#define AVERROR_BUG (-MKTAG( 'B','U','G',' ')) ///< Bug detected, please report the issue
-#define AVERROR_EOF AVERROR(EPIPE) /**< End of file. */
-#define AVERROR_INVALIDDATA AVERROR(EINVAL) /**< invalid data found */
-#define AVERROR_NOENT AVERROR(ENOENT) /**< No such file or directory. */
-#define AVERROR_NOFMT AVERROR(EILSEQ) /**< unknown format */
-#define AVERROR_NOTSUPP AVERROR(ENOSYS) /**< Operation not supported. */
-#define AVERROR_NUMEXPECTED AVERROR(EDOM) /**< Number syntax expected in filename. */
+/**
+ * Put 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 errnum error code to describe
+ * @param errbuf buffer to which description is written
+ * @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);
-#define AVERROR_PATCHWELCOME (-MKTAG('P','A','W','E')) /**< Not yet implemented in FFmpeg. Patches welcome. */
+/**
+ * @}
+ */
#endif /* AVUTIL_ERROR_H */