[FFmpeg-devel] [PATCH V1] lavc/mpeg4audio: add chan_config check to avoid indeterminate channels

Jun Zhao mypopydev at gmail.com
Sat Sep 21 14:29:47 EEST 2019


From: Jun Zhao <barryjzhao at tencent.com>

add chan_config check to avoid indeterminate channels.

Signed-off-by: Jun Zhao <barryjzhao at tencent.com>
---
 libavcodec/mpeg4audio.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/libavcodec/mpeg4audio.c b/libavcodec/mpeg4audio.c
index 2197147..0ada239 100644
--- a/libavcodec/mpeg4audio.c
+++ b/libavcodec/mpeg4audio.c
@@ -93,6 +93,10 @@ int ff_mpeg4audio_get_config_gb(MPEG4AudioConfig *c, GetBitContext *gb,
     c->chan_config = get_bits(gb, 4);
     if (c->chan_config < FF_ARRAY_ELEMS(ff_mpeg4audio_channels))
         c->channels = ff_mpeg4audio_channels[c->chan_config];
+    else {
+        av_log(NULL, AV_LOG_ERROR, "Invalid chan_config %d\n", c->chan_config);
+        return -1;
+    }
     c->sbr = -1;
     c->ps  = -1;
     if (c->object_type == AOT_SBR || (c->object_type == AOT_PS &&
-- 
1.7.1



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