From: Kacper Michajlow <kasper93@gmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH] avcodec/opus/silk: don't assume stereo when calling silk_decode_frame()
Date: Tue, 22 Jul 2025 21:21:03 +0200
Message-ID: <CABPLASSPryzy6-MncoGXdqSmsfoMe03h1BScbXqomDtpo-XoFg@mail.gmail.com> (raw)
In-Reply-To: <20250722162432.3328-1-jamrial@gmail.com>
On Tue, 22 Jul 2025 at 18:25, James Almer <jamrial@gmail.com> wrote:
>
> Fixes use-of-uninitialized-value under MSAN.
>
> Signed-off-by: James Almer <jamrial@gmail.com>
> ---
> libavcodec/opus/silk.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/libavcodec/opus/silk.c b/libavcodec/opus/silk.c
> index 97bb95037c..ffa2ec996b 100644
> --- a/libavcodec/opus/silk.c
> +++ b/libavcodec/opus/silk.c
> @@ -844,8 +844,10 @@ int ff_silk_decode_superframe(SilkContext *s, OpusRangeCoder *rc,
> }
>
> for (i = 0; i < nb_frames; i++) {
> - for (j = 0; j < coded_channels && !s->midonly; j++)
> - silk_decode_frame(s, rc, i, j, coded_channels, active[j][i], active[1][i], 0);
> + for (j = 0; j < coded_channels && !s->midonly; j++) {
> + int active1 = coded_channels > 1 ? active[1][i] : 0;
> + silk_decode_frame(s, rc, i, j, coded_channels, active[j][i], active1, 0);
> + }
>
> /* reset the side channel if it is not coded */
> if (s->midonly && s->frame[1].coded)
> --
> 2.50.1
>
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LGTM
- Kacper
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prev parent reply other threads:[~2025-07-22 19:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-22 16:24 James Almer
2025-07-22 19:21 ` Kacper Michajlow [this message]
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