[FFmpeg-cvslog] avfilter/buffersrc: check for valid sample rate

[James Almer]

ffmpeg | branch: release/4.4 | James Almer <jamrial at gmail.com> | Mon Dec 30 00:25:41 2024 -0300| [2ec7f8ea4da98449061cb0f7e61c5d1cb4e1cc92] | committer: Michael Niedermayer

avfilter/buffersrc: check for valid sample rate

A sample rate <= 0 is invalid.

Fixes an assert in ffmpeg_enc.c that assumed a valid sample rate would be set.
Fixes ticket #11385.

Signed-off-by: James Almer <jamrial at gmail.com>
(cherry picked from commit 1446e37d3d032e1452844778b3e6ba2c20f0c322)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2ec7f8ea4da98449061cb0f7e61c5d1cb4e1cc92
---

 libavfilter/buffersrc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c
index da1cf9941e..89efbb448a 100644
--- a/libavfilter/buffersrc.c
+++ b/libavfilter/buffersrc.c
@@ -337,6 +337,11 @@ static av_cold int init_audio(AVFilterContext *ctx)
         return AVERROR(EINVAL);
     }
 
+    if (s->sample_rate <= 0) {
+        av_log(ctx, AV_LOG_ERROR, "Sample rate not set\n");
+        return AVERROR(EINVAL);
+    }
+
     if (!s->time_base.num)
         s->time_base = (AVRational){1, s->sample_rate};