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[FFmpeg-devel,2/3] avcodec/aacsbr_fixed: Fix division by zero in sbr_gain_calc()

Message ID 20171101130020.9356-2-michael@niedermayer.cc
State Accepted
Commit 7d1dec466895eed12f2c79b7ab5447f5390fe869
Headers show

Commit Message

Michael Niedermayer Nov. 1, 2017, 1 p.m. UTC 
Fixes: 3642/clusterfuzz-testcase-minimized-5443853801750528

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/aacsbr_fixed.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/libavcodec/aacsbr_fixed.c b/libavcodec/aacsbr_fixed.c
index 289bb86a81..3d5875a469 100644
--- a/libavcodec/aacsbr_fixed.c
+++ b/libavcodec/aacsbr_fixed.c
@@ -433,6 +433,7 @@  static void sbr_gain_calc(AACContext *ac, SpectralBandReplication *sbr,
                                                 av_add_sf(FLOAT_1, sbr->e_curr[e][m]),
                                                 av_add_sf(FLOAT_1, sbr->q_mapped[e][m]))));
                 }
+                sbr->gain[e][m] = av_add_sf(sbr->gain[e][m], FLOAT_MIN);
             }
             for (m = sbr->f_tablelim[k] - sbr->kx[1]; m < sbr->f_tablelim[k + 1] - sbr->kx[1]; m++) {
                 sum[0] = av_add_sf(sum[0], sbr->e_origmapped[e][m]);