[FFmpeg-cvslog] avfilter/vf_libplacebo: fix output format selection

[Niklas Haas]

ffmpeg | branch: master | Niklas Haas <git at haasn.dev> | Fri Nov 18 16:11:25 2022 +0100| [12b4ab5d4d9e4fe8f25d9729048e73488d9e49d2] | committer: Niklas Haas

avfilter/vf_libplacebo: fix output format selection

After commit c0b93, it's possible that `ff_vk_filter_config_input` never
gets called, leading to `s->vkctx.input_format` being left unset. This
broke the format auto-selection logic in `libplacebo_config_output`,
resulting in a default to yuv420p, instead of defaulting to the input
format as intended.

Fixes: c0b93c4f8be48e2abad1eb5358643a01b9e27613

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=12b4ab5d4d9e4fe8f25d9729048e73488d9e49d2
---

 libavfilter/vf_libplacebo.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavfilter/vf_libplacebo.c b/libavfilter/vf_libplacebo.c
index 65865b7811..92f859fd94 100644
--- a/libavfilter/vf_libplacebo.c
+++ b/libavfilter/vf_libplacebo.c
@@ -551,9 +551,15 @@ fail:
 
 static int libplacebo_config_input(AVFilterLink *inlink)
 {
+    AVFilterContext *avctx = inlink->dst;
+    LibplaceboContext *s   = avctx->priv;
+
     if (inlink->format == AV_PIX_FMT_VULKAN)
         return ff_vk_filter_config_input(inlink);
 
+    /* Forward this to the vkctx for format selection */
+    s->vkctx.input_format = inlink->format;
+
     return 0;
 }