From 30b28f9a83ec095f5684fecb04a42619a6675989 Mon Sep 17 00:00:00 2001
From: Timo Rothenpieler <timo@rothenpieler.org>
Date: Mon, 6 Apr 2020 19:33:01 +0200
Subject: [PATCH] avutil/hwcontext_cuda: Only handle CUDA hardware frames

---
 libavutil/hwcontext_cuda.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavutil/hwcontext_cuda.c b/libavutil/hwcontext_cuda.c
index 95402a1460..58d128a280 100644
--- a/libavutil/hwcontext_cuda.c
+++ b/libavutil/hwcontext_cuda.c
@@ -212,6 +212,10 @@ static int cuda_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
     CUcontext dummy;
     int i, ret;
 
+    if ((src->hw_frames_ctx && ((AVHWFramesContext*)src->hw_frames_ctx->data)->format != AV_PIX_FMT_CUDA) ||
+        (dst->hw_frames_ctx && ((AVHWFramesContext*)dst->hw_frames_ctx->data)->format != AV_PIX_FMT_CUDA))
+        return AVERROR(ENOSYS);
+
     ret = CHECK_CU(cu->cuCtxPushCurrent(hwctx->cuda_ctx));
     if (ret < 0)
         return ret;