[FFmpeg-devel] [PATCH v2 1/3] fftools/cmdutils: Add function to report error before exit

[Andreas Rheinhardt]

Andreas Rheinhardt:
> This is designed to improve and unify error handling for
> allocation failures for the many (often small) allocations that we have
> in the fftools. These typically either don't return an error message
> or an error message that is not really helpful to the user
> and can be replaced by a generic error message without loss of
> information.
> 
> Reviewed-by: James Almer <jamrial at gmail.com>
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
> ---
>  fftools/cmdutils.c |  6 ++++++
>  fftools/cmdutils.h | 11 +++++++++++
>  2 files changed, 17 insertions(+)
> 
> diff --git a/fftools/cmdutils.c b/fftools/cmdutils.c
> index 18e768b386..da3d391694 100644
> --- a/fftools/cmdutils.c
> +++ b/fftools/cmdutils.c
> @@ -90,6 +90,12 @@ void register_exit(void (*cb)(int ret))
>      program_exit = cb;
>  }
>  
> +void report_and_exit(int ret)
> +{
> +    av_log(NULL, AV_LOG_FATAL, "%s\n", av_err2str(ret));
> +    exit_program(AVUNERROR(ret));
> +}
> +
>  void exit_program(int ret)
>  {
>      if (program_exit)
> diff --git a/fftools/cmdutils.h b/fftools/cmdutils.h
> index d87e162ccd..4496221983 100644
> --- a/fftools/cmdutils.h
> +++ b/fftools/cmdutils.h
> @@ -54,6 +54,17 @@ extern int hide_banner;
>   */
>  void register_exit(void (*cb)(int ret));
>  
> +/**
> + * Reports an error corresponding to the provided
> + * AVERROR code and calls exit_program() with the
> + * corresponding POSIX error code.
> + * @note ret must be an AVERROR-value of a POSIX error code
> + *       (i.e. AVERROR(EFOO) and not AVERROR_FOO).
> + *       library functions can return both, so call this only
> + *       with AVERROR(EFOO) of your own.
> + */
> +void report_and_exit(int ret) av_noreturn;
> +
>  /**
>   * Wraps exit with a program-specific cleanup routine.
>   */

Will apply tonight unless there are objections.

- Andreas