[FFmpeg-devel] [PATCH 1/2] avcodec/ac3enc_template: add fbw_channels assert

From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/2] avcodec/ac3enc_template: add fbw_channels assert
Date: Mon,  5 Feb 2024 03:58:22 +0100
Message-ID: <20240205025823.4259-1-michael@niedermayer.cc> (raw)

fbw_channels must be > 0 as teh code is only run if cpl_enabled is set and that requires mode >= AC3_CHMODE_STEREO

CID 718138 Uninitialized scalar variable
	assumes this assert to be false

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/ac3enc_template.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/ac3enc_template.c b/libavcodec/ac3enc_template.c
index ce9ef58a330..34d07cc9e5b 100644
--- a/libavcodec/ac3enc_template.c
+++ b/libavcodec/ac3enc_template.c
@@ -223,6 +223,8 @@ static void apply_channel_coupling(AC3EncodeContext *s)
         }
     }
 
+    av_assert1(s->fbw_channels > 0);
+
     /* calculate final coupling coordinates, taking into account reusing of
        coordinates in successive blocks */
     for (bnd = 0; bnd < s->num_cpl_bands; bnd++) {
-- 
2.17.1

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