[FFmpeg-devel] [PATCH] avdevice/decklink_dec: fix no warning message if no input signal detected

[Marton Balint]

On Thu, 18 Jun 2020, lance.lmwang at gmail.com wrote:

> From: Limin Wang <lance.lmwang at gmail.com>
>
> Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
> ---
> libavdevice/decklink_dec.cpp | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavdevice/decklink_dec.cpp b/libavdevice/decklink_dec.cpp
> index 82106aa..90569dc 100644
> --- a/libavdevice/decklink_dec.cpp
> +++ b/libavdevice/decklink_dec.cpp
> @@ -751,7 +751,7 @@ HRESULT decklink_input_callback::VideoInputFrameArrived(
>                 }
>             }
> 
> -            if (!no_video) {
> +            if (no_video) {
>                 av_log(avctx, AV_LOG_WARNING, "Frame received (#%lu) - No input signal detected "
>                         "- Frames dropped %u\n", ctx->frameCount, ++ctx->dropped);
>             }

No, this is good as is, the !no_video condition ensures that it is only 
logged once when the input actually disappears, and not for every 
consecutive frame with no input.

Regards,
Marton