[FFmpeg-cvslog] avutil/hwcontext_amf: add device cache size

[Araz Iusubov]

ffmpeg | branch: master | Araz Iusubov <primeadvice at gmail.com> | Thu Jul 17 15:50:22 2025 +0200| [cd33219558482e256e32157df0073dae4d883e1f] | committer: Dmitrii Ovchinnikov

avutil/hwcontext_amf: add device cache size

This change improves pipeline stability and reduces
dynamic GPU surface allocations when using AMF with copy_frame = 1.
This optimization has no negative effect.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cd33219558482e256e32157df0073dae4d883e1f
---

 libavutil/hwcontext_amf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavutil/hwcontext_amf.c b/libavutil/hwcontext_amf.c
index a020b0e2e1..20b9296e34 100644
--- a/libavutil/hwcontext_amf.c
+++ b/libavutil/hwcontext_amf.c
@@ -496,8 +496,10 @@ static int amf_device_create(AVHWDeviceContext *device_ctx,
 
 
         ret = ctx->factory->pVtbl->CreateContext(ctx->factory, &ctx->context);
-        if (ret == AMF_OK)
+        if (ret == AMF_OK) {
+            AMF_ASSIGN_PROPERTY_INT64(ret, ctx->context, L"DeviceSurfaceCacheSize", 50 );
             return 0;
+        }
         av_log(device_ctx, AV_LOG_ERROR, "CreateContext() failed with error %d.\n", ret);
     }
     amf_device_uninit(device_ctx);