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

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

[Araz Iusubov]

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

---
 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);
-- 
2.45.2.windows.1

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