add default initiaization for pix_fmt in function have_alpha_panar
to avoid using uninitialized value.
Signed-off-by: Linjie Fu <linjie...@intel.com>
---
libavfilter/vf_overlay_qsv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavfilter/vf_overlay_qsv.c b/libavfilter/vf_overlay_qsv.c
index 20871786ee..79d6a58ec3 100644
--- a/libavfilter/vf_overlay_qsv.c
+++ b/libavfilter/vf_overlay_qsv.c
@@ -167,7 +167,8 @@ static int have_alpha_planar(AVFilterLink *link)
if (link->format == AV_PIX_FMT_QSV) {
fctx = (AVHWFramesContext *)link->hw_frames_ctx->data;
pix_fmt = fctx->sw_format;
- }
+ } else
+ pix_fmt = AV_PIX_FMT_NONE;
desc = av_pix_fmt_desc_get(pix_fmt);
if (!desc)
--
2.17.1
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