[FFmpeg-devel] [PATCH 1/2] avcodec/hevc_cabac: Move prefix check in coeff_abs_level_remaining_decode() down
Michael Niedermayer
michael at niedermayer.cc
Tue Jan 16 01:37:27 EET 2018
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavcodec/hevc_cabac.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/libavcodec/hevc_cabac.c b/libavcodec/hevc_cabac.c
index 5b5da1165a..743168500c 100644
--- a/libavcodec/hevc_cabac.c
+++ b/libavcodec/hevc_cabac.c
@@ -990,16 +990,19 @@ static av_always_inline int coeff_abs_level_remaining_decode(HEVCContext *s, int
while (prefix < CABAC_MAX_BIN && get_cabac_bypass(&s->HEVClc->cc))
prefix++;
- if (prefix == CABAC_MAX_BIN) {
- av_log(s->avctx, AV_LOG_ERROR, "CABAC_MAX_BIN : %d\n", prefix);
- return 0;
- }
+
if (prefix < 3) {
for (i = 0; i < rc_rice_param; i++)
suffix = (suffix << 1) | get_cabac_bypass(&s->HEVClc->cc);
last_coeff_abs_level_remaining = (prefix << rc_rice_param) + suffix;
} else {
int prefix_minus3 = prefix - 3;
+
+ if (prefix == CABAC_MAX_BIN) {
+ av_log(s->avctx, AV_LOG_ERROR, "CABAC_MAX_BIN : %d\n", prefix);
+ return 0;
+ }
+
for (i = 0; i < prefix_minus3 + rc_rice_param; i++)
suffix = (suffix << 1) | get_cabac_bypass(&s->HEVClc->cc);
last_coeff_abs_level_remaining = (((1 << prefix_minus3) + 3 - 1)
--
2.15.1
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