[FFmpeg-cvslog] avcodec/h263dec: Reinitialize idct context if it has not been setup for the active profile

[Michael Niedermayer]

ffmpeg | branch: release/4.0 | Michael Niedermayer <michael at niedermayer.cc> | Mon May 28 22:29:58 2018 +0200| [0097cc0ea36c9350af585afdb5737e7bb1406618] | committer: Michael Niedermayer

avcodec/h263dec: Reinitialize idct context if it has not been setup for the active profile

The profile after reading headers can be different from when the context was initialized

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 44a2415a6d94f841f2026bb70b8b3c19ba68aa72)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0097cc0ea36c9350af585afdb5737e7bb1406618
---

 libavcodec/h263dec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index eae29fa438..5b6f834d5a 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -545,6 +545,8 @@ retry:
     if (CONFIG_MPEG4_DECODER && avctx->codec_id == AV_CODEC_ID_MPEG4) {
         if (ff_mpeg4_workaround_bugs(avctx) == 1)
             goto retry;
+        if (s->studio_profile != (s->idsp.idct == NULL))
+            ff_mpv_idct_init(s);
     }
 
     /* After H.263 & MPEG-4 header decode we have the height, width,