[FFmpeg-devel] [PATCH] avfilter/buffersrc: never override channel count in av_buffersrc_add_frame_flags

[Marton Balint]

On Sun, 31 Mar 2024, Marton Balint wrote:

> Overriding unknown layouts with the negotiated layout is OK, but the number of
> channels should match with what was negotiated.

Will apply.

Regards,
Marton

>
> Signed-off-by: Marton Balint <cus at passwd.hu>
> ---
> libavfilter/buffersrc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c
> index 130751775a..3ea3ca92c9 100644
> --- a/libavfilter/buffersrc.c
> +++ b/libavfilter/buffersrc.c
> @@ -215,7 +215,7 @@ int attribute_align_arg av_buffersrc_add_frame_flags(AVFilterContext *ctx, AVFra
>             break;
>         case AVMEDIA_TYPE_AUDIO:
>             /* For layouts unknown on input but known on link after negotiation. */
> -            if (frame->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC) {
> +            if (frame->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC && frame->ch_layout.nb_channels == s->ch_layout.nb_channels) {
>                 ret = av_channel_layout_copy(&frame->ch_layout, &s->ch_layout);
>                 if (ret < 0)
>                     return ret;
> -- 
> 2.35.3
>
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