From 8ca6903676546cdba27f120ddddabbb1b1e845aa Mon Sep 17 00:00:00 2001
From: Lei Kang <lkang@nuro.ai>
Date: Thu, 4 Sep 2025 15:42:13 -0700
Subject: [PATCH] add null pointer from C

---
 pkg/codec/vpx/vpx_decoder.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkg/codec/vpx/vpx_decoder.go b/pkg/codec/vpx/vpx_decoder.go
index 77601aa..5407810 100644
--- a/pkg/codec/vpx/vpx_decoder.go
+++ b/pkg/codec/vpx/vpx_decoder.go
@@ -98,8 +98,11 @@ func (d *Decoder) Decode(data []byte) {
 }
 
 func (d *Decoder) GetFrame() *VpxImage {
-	iter := C.newIter()
-	img := C.getFrame(d.codec, iter)
+	var iter C.vpx_codec_iter_t = nil // initialize to NULL to start iteration
+	img := C.getFrame(d.codec, &iter)
+	if img == nil {
+		return nil
+	}
 	return &VpxImage{img: img}
 }