Fixes: out of array access
Fixes: 31201/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-4627865612189696.fuzz
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
return err;
+ /* set chroma shifts */
+ err = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
+ &s->chroma_x_shift,
+ &s->chroma_y_shift);
+ if (err < 0)
+ return err;
+
if ((err = init_context_frame(s)))
return err;