[FFmpeg-devel] [PATCH] avutil/hwcontext_qsv: register free function for device_derive

Tong Wu tong1.wu at intel.com
Fri Jun 16 10:27:23 EEST 2023

When qsv device is created by device_derive, the ctx->free function is
not registered, causing potential memory leak because of not properly
closing the MFX session.

Signed-off-by: Tong Wu <tong1.wu at intel.com>
Signed-off-by: Wenbin Chen <wenbin.chen at intel.com>
 libavutil/hwcontext_qsv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavutil/hwcontext_qsv.c b/libavutil/hwcontext_qsv.c
index 4ed4242ddf..713dc90ffd 100644
--- a/libavutil/hwcontext_qsv.c
+++ b/libavutil/hwcontext_qsv.c
@@ -2094,6 +2094,9 @@ static int qsv_device_derive(AVHWDeviceContext *ctx,
                              AVDictionary *opts, int flags)
     mfxIMPL impl;
+    ctx->free = qsv_device_free;
     impl = choose_implementation("hw_any", child_device_ctx->type);
     return qsv_device_derive_from_child(ctx, impl,
                                         child_device_ctx, flags);

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