Merge remote-tracking branch 'qatar/master'

[coroid/ffmpeg_saccubus.git] / libavutil / error.h

diff --git a/libavutil/error.h b/libavutil/error.h
index 89e122c..47d366e 100644 (file)
--- a/libavutil/error.h
+++ b/libavutil/error.h
@@ -17,35 +17,52 @@
  */
 
 /**
- * @file libavutil/error.h
+ * @file
  * error code definitions
  */
 
 #ifndef AVUTIL_ERROR_H
 #define AVUTIL_ERROR_H
 
+#include <errno.h>
+#include "avutil.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. */
+#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_UNKNOWN     AVERROR(EINVAL)  /**< unknown error */
-#define AVERROR_IO          AVERROR(EIO)     /**< I/O error */
-#define AVERROR_NOMEM       AVERROR(ENOMEM)  /**< not enough memory */
-#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 FFmpeg, 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_NUMEXPECTED AVERROR(EDOM)    /**< Number syntax expected in filename. */
-#define AVERROR_INVALIDDATA AVERROR(EINVAL)  /**< invalid data found */
-#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. */
+/**
+ * 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);
 
 #endif /* AVUTIL_ERROR_H */