[FFmpeg-cvslog] avcodec/h264: Fix off by 1 context count

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Tue Jun  7 22:17:38 2016 +0200| [27c1eae55f24e9ed005a6634cd4ddd867118fa48] | committer: Michael Niedermayer

avcodec/h264: Fix off by 1 context count

Fixes fate-h264-xavc-4389 with slice threads

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=27c1eae55f24e9ed005a6634cd4ddd867118fa48
---

 libavcodec/h264.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index b870a72..96943aa 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -1270,12 +1270,10 @@ again:
                 av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
             sl->ref_count[0] = sl->ref_count[1] = sl->list_count = 0;
         } else if (err == SLICE_SINGLETHREAD) {
-            if (context_count > 1) {
-                ret = ff_h264_execute_decode_slices(h, context_count - 1);
-                if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
-                    goto end;
-                context_count = 0;
-            }
+            ret = ff_h264_execute_decode_slices(h, context_count);
+            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
+                goto end;
+            context_count = 0;
             /* Slice could not be decoded in parallel mode, restart. Note
              * that rbsp_buffer is not transferred, but since we no longer
              * run in parallel mode this should not be an issue. */