[FFmpeg-devel] [PATCH] Implement av_strerror()

[Michael Niedermayer]

On Sun, Mar 14, 2010 at 01:03:58PM +0100, Stefano Sabatini wrote:
> Hi, as in subject.
> -- 
> FFmpeg = Fascinating Fundamental Mega Philosofic Exciting Gargoyle

>  Makefile |    1 +
>  avutil.h |    2 +-
>  error.c  |   51 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  error.h  |   11 +++++++++++
>  4 files changed, 64 insertions(+), 1 deletion(-)
> 94128e225797deb01a7953811f12e8eeeb02a0a9  0007-Implement-av_strerror.patch
> >From 7a4c5f8f03be3cb170774569a64149f3169f8e2f Mon Sep 17 00:00:00 2001
> From: Stefano Sabatini <stefano.sabatini-lala at poste.it>
> Date: Sun, 14 Mar 2010 01:06:46 +0100
> Subject: [PATCH 7/8] Implement av_strerror().
> 
> ---
>  libavutil/Makefile |    1 +
>  libavutil/avutil.h |    2 +-
>  libavutil/error.c  |   51 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  libavutil/error.h  |   11 +++++++++++
>  4 files changed, 64 insertions(+), 1 deletions(-)
>  create mode 100644 libavutil/error.c
> 
> diff --git a/libavutil/Makefile b/libavutil/Makefile
> index 5b6cd0e..79506c0 100644
> --- a/libavutil/Makefile
> +++ b/libavutil/Makefile
> @@ -30,6 +30,7 @@ OBJS = adler32.o                                                        \
>         base64.o                                                         \
>         crc.o                                                            \
>         des.o                                                            \
> +       error.o                                                          \
>         fifo.o                                                           \
>         intfloat_readwrite.o                                             \
>         lfg.o                                                            \
> diff --git a/libavutil/avutil.h b/libavutil/avutil.h
> index 47630a7..968787c 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 12
> +#define LIBAVUTIL_VERSION_MINOR 13
>  #define LIBAVUTIL_VERSION_MICRO  0
>  
>  #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
> diff --git a/libavutil/error.c b/libavutil/error.c
> new file mode 100644
> index 0000000..d299179
> --- /dev/null
> +++ b/libavutil/error.c
> @@ -0,0 +1,51 @@
> +/*
> + * 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
> + */
> +
> +#include "avutil.h"
> +#include "avstring.h"
> +

> +int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
> +{
> +    int ret = 0;
> +
> +    switch (errnum) {
> +#define HANDLE_ERROR(ERR, ERRSTR) case AVERROR_##ERR: av_strlcpy(errbuf, ERRSTR, errbuf_size); break
> +
> +#if LIBAVUTIL_VERSION_MAJOR < 51
> +    HANDLE_ERROR(IO            , "I/O error");
> +    HANDLE_ERROR(NOENT         , "No such file or directory");
> +    HANDLE_ERROR(NOMEM         , "Not enough memory");
> +#endif
> +    HANDLE_ERROR(EOF           , "End of file");
> +    HANDLE_ERROR(INVALIDDATA   , "Invalid data found");
> +    HANDLE_ERROR(NOFMT         , "Unknown format");
> +    HANDLE_ERROR(NOTSUPP       , "Operation not supported");
> +    HANDLE_ERROR(NUMEXPECTED   , "Number syntax expected in filename");
> +    HANDLE_ERROR(PATCHWELCOME  , "Not yet implemented in FFmpeg, patches welcome");

case X: s= "kjfdkfjhfkjh"; break;
...

av_strlcpy(s)


[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

I have never wished to cater to the crowd; for what I know they do not
approve, and what they approve I do not know. -- Epicurus
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