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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-24 19:38:05 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-31 23:47:15 +0100 |
| commit | ed06873b7b2dcace1dd421d92c3aaee2a4d6b26d (patch) | |
| tree | d67822eadf01045d8bf1fe2056f41f3c6262f8d5 | |
| parent | c740f585a183abccd0ffc9cce67989b4bb0d08b9 (diff) | |
| download | ffmpeg-ed06873b7b2dcace1dd421d92c3aaee2a4d6b26d.tar.gz | |
avfilter/vf_transpose: Fix used plane count.
Fixes out of array access
Fixes: poc.mp4
Found-by: GwanYeong Kim <gy741.kim@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c6939f65a116b1ffed345d29d8621ee4ffb32235)
(cherry picked from commit 3f621455d62e46745453568d915badd5b1e5bcd5)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavfilter/vf_transpose.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libavfilter/vf_transpose.c b/libavfilter/vf_transpose.c index e4de31b042..0db0a3c5bd 100644 --- a/libavfilter/vf_transpose.c +++ b/libavfilter/vf_transpose.c @@ -27,6 +27,7 @@ #include <stdio.h> +#include "libavutil/avassert.h" #include "libavutil/imgutils.h" #include "libavutil/internal.h" #include "libavutil/intreadwrite.h" @@ -54,6 +55,7 @@ enum TransposeDir { typedef struct TransContext { const AVClass *class; int hsub, vsub; + int planes; int pixsteps[4]; int passthrough; ///< PassthroughType, landscape passthrough mode enabled @@ -105,6 +107,10 @@ static int config_props_output(AVFilterLink *outlink) trans->hsub = desc_in->log2_chroma_w; trans->vsub = desc_in->log2_chroma_h; + trans->planes = av_pix_fmt_count_planes(outlink->format); + + av_assert0(desc_in->nb_components == desc_out->nb_components); + av_image_fill_max_pixsteps(trans->pixsteps, NULL, desc_out); @@ -147,7 +153,7 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, AVFrame *in = td->in; int plane; - for (plane = 0; out->data[plane]; plane++) { + for (plane = 0; plane < trans->planes; plane++) { int hsub = plane == 1 || plane == 2 ? trans->hsub : 0; int vsub = plane == 1 || plane == 2 ? trans->vsub : 0; int pixstep = trans->pixsteps[plane]; |