[FFmpeg-cvslog] avcodec/rka: use 64bit for srate_pad computation

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Mar  4 23:58:08 2023 +0100| [cbe5e480aa1679c1dfc20d433e310acd7449af07] | committer: Michael Niedermayer

avcodec/rka: use 64bit for srate_pad computation

Fixes: left shift of 538976288 by 13 places cannot be represented in type 'int'
Fixes: 56148/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RKA_fuzzer-6257370708967424

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cbe5e480aa1679c1dfc20d433e310acd7449af07
---

 libavcodec/rka.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/rka.c b/libavcodec/rka.c
index 3e86d83819..ce39a902af 100644
--- a/libavcodec/rka.c
+++ b/libavcodec/rka.c
@@ -207,7 +207,7 @@ static int chctx_init(RKAContext *s, ChContext *c,
     c->bprob[0] = s->bprob[0];
     c->bprob[1] = s->bprob[1];
 
-    c->srate_pad = (sample_rate << 13) / 44100 & 0xFFFFFFFCU;
+    c->srate_pad = ((int64_t)sample_rate << 13) / 44100 & 0xFFFFFFFCU;
     c->pos_idx = 1;
 
     for (int i = 0; i < FF_ARRAY_ELEMS(s->bprob[0]); i++)