[PATCH 1/8] Move error code definitions from libavcodec/avcodec.h to libavutil/error.h.

[Stefano Sabatini]

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
---
 libavcodec/avcodec.h |   20 --------------------
 libavutil/Makefile   |    1 +
 libavutil/avutil.h   |    3 ++-
 libavutil/error.h    |   49 +++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 52 insertions(+), 21 deletions(-)
 create mode 100644 libavutil/error.h

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index c6825f3..bc7c0a0 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3809,26 +3809,6 @@ int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str);
  */
 int av_parse_video_frame_rate(AVRational *frame_rate, const char *str);
 
-/* 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. */
-
 /**
  * Logs a generic warning message about a missing feature. This function is
  * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
diff --git a/libavutil/Makefile b/libavutil/Makefile
index 1802526..5b6cd0e 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -9,6 +9,7 @@ HEADERS = adler32.h                                                     \
           base64.h                                                      \
           common.h                                                      \
           crc.h                                                         \
+          error.h                                                       \
           fifo.h                                                        \
           intfloat_readwrite.h                                          \
           log.h                                                         \
diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index d44a906..47630a7 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -40,7 +40,7 @@
 #define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
 
 #define LIBAVUTIL_VERSION_MAJOR 50
-#define LIBAVUTIL_VERSION_MINOR 11
+#define LIBAVUTIL_VERSION_MINOR 12
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
@@ -69,6 +69,7 @@ const char *avutil_configuration(void);
 const char *avutil_license(void);
 
 #include "common.h"
+#include "error.h"
 #include "mathematics.h"
 #include "rational.h"
 #include "intfloat_readwrite.h"
diff --git a/libavutil/error.h b/libavutil/error.h
new file mode 100644
index 0000000..f12788e
--- /dev/null
+++ b/libavutil/error.h
@@ -0,0 +1,49 @@
+/*
+ * 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 codes definition
+ */
+
+#ifndef AVUTIL_ERROR_H
+#define AVUTIL_ERROR_H
+
+/* error handling */
+/** Returns a negative error code corresponding to a POSIX error code, to return from library functions. */
+#if EINVAL > 0
+#define AVERROR(e) (-(e))
+#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 */
-- 
1.6.6.1


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