[FFmpeg-devel] [PATCH] avfilter/drawutils: Check av_pix_fmt_desc_get() return value in ff_fill_line_with_color()

[Paul B Mahol]

Dana 13. 6. 2015. 00:05 osoba "Michael Niedermayer" <michaelni at gmx.at>
napisala je:
>
> Theres currently no case where this could be triggered but adding this
> provides future robustness
>
> Found-by: Daemon404
> Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> ---
>  libavfilter/drawutils.c |    7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/libavfilter/drawutils.c b/libavfilter/drawutils.c
> index 0b2f17e..4385398 100644
> --- a/libavfilter/drawutils.c
> +++ b/libavfilter/drawutils.c
> @@ -66,7 +66,12 @@ int ff_fill_line_with_color(uint8_t *line[4], int
pixel_step[4], int w, uint8_t
>      uint8_t rgba_map[4] = {0};
>      int i;
>      const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(pix_fmt);
> -    int hsub = pix_desc->log2_chroma_w;
> +    int hsub;
> +
> +    if (!pix_desc)
> +        return AVERROR(EINVAL);
> +
> +    hsub = pix_desc->log2_chroma_w;
>
>      *is_packed_rgba = ff_fill_rgba_map(rgba_map, pix_fmt) >= 0;
>
> --
> 1.7.9.5
>
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LGTM