ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | Fri Apr 29 03:49:18 2022 +0200| [8449fbdf8e7669bfa05df594499dcf4e439561b3] | committer: Andreas Rheinhardt avfilter/vf_colormap: Avoid allocation of small array The number of elements is always two or three. Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8449fbdf8e7669bfa0...

libavfilter/vf_colormap.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/libavfilter/vf_colormap.c b/libavfilter/vf_colormap.c index d5c5bec39c..106333ced8 100644 --- a/libavfilter/vf_colormap.c +++ b/libavfilter/vf_colormap.c @@ -24,6 +24,7 @@ */ #include "libavutil/attributes.h" +#include "libavutil/avassert.h" #include "libavutil/common.h" #include "libavutil/opt.h" #include "avfilter.h" @@ -134,20 +135,15 @@ static void gauss_solve_triangular(const double *A, const int *p, double *b, int static int gauss_solve(double *A, double *b, int n) { - int *p = av_calloc(n, sizeof(*p)); + int p[3] = { 0 }; - if (!p) - return 1; + av_assert2(n <= FF_ARRAY_ELEMS(p)); - if (!gauss_make_triangular(A, p, n)) { - av_freep(&p); + if (!gauss_make_triangular(A, p, n)) return 1; - } gauss_solve_triangular(A, p, b, n); - av_freep(&p); - return 0; }