[FFmpeg-cvslog] avfilter/geq: unbreak alpha processing

[Gyan Doshi]

ffmpeg | branch: master | Gyan Doshi <ffmpeg at gyani.pro> | Sat May  7 17:42:18 2022 +0530| [b980d9e8ecf5d4bc5e39a74bdad98c7cc400da84] | committer: Gyan Doshi

avfilter/geq: unbreak alpha processing

d607af50fd broke alpha processing by always overwriting any supplied
alpha expression.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b980d9e8ecf5d4bc5e39a74bdad98c7cc400da84
---

 libavfilter/vf_geq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/vf_geq.c b/libavfilter/vf_geq.c
index fd9e0fd80b..2b53980278 100644
--- a/libavfilter/vf_geq.c
+++ b/libavfilter/vf_geq.c
@@ -275,7 +275,7 @@ static av_cold int geq_init(AVFilterContext *ctx)
 
     if (!geq->expr_str[A] && geq->bps != 32) {
         geq->expr_str[A] = av_asprintf("%d", (1<<geq->bps) - 1);
-    } else {
+    } else if (!geq->expr_str[A]) {
         geq->expr_str[A] = av_asprintf("%f", 1.f);
     }
     if (!geq->expr_str[G])