d3d11: lock the device when creating the Video Processor

It doesn't seem to be thread safe.

modules/hw/d3d11/d3d11_deinterlace.c

@@ -251,6 +251,8 @@ int D3D11OpenDeinterlace(vlc_object_t *obj)
         return VLC_ENOMEM;
     memset(sys, 0, sizeof (*sys));
 
+    d3d11_device_lock(sys->d3d_dev);
+
     d3d11_decoder_device_t *dev_sys = GetD3D11OpaqueContext( filter->vctx_in );
     sys->d3d_dev = &dev_sys->d3d_dev;
     if (D3D11_CreateProcessor(filter, sys->d3d_dev, D3D11_VIDEO_FRAME_FORMAT_INTERLACED_TOP_FIELD_FIRST,
@@ -343,6 +345,7 @@ int D3D11OpenDeinterlace(vlc_object_t *obj)
     {
        goto error;
     }
+    d3d11_device_unlock(sys->d3d_dev);
 
     filter->fmt_out.video   = out_fmt;
     filter->vctx_out        = vlc_video_context_Hold(filter->vctx_in);
@@ -353,6 +356,7 @@ int D3D11OpenDeinterlace(vlc_object_t *obj)
     return VLC_SUCCESS;
 error:
     D3D11_ReleaseProcessor(&sys->d3d_proc);
+    d3d11_device_unlock(sys->d3d_dev);
     free(sys);
 
     return VLC_EGENERIC;

modules/hw/d3d11/d3d11_filters.c

@@ -358,6 +358,8 @@ static int D3D11OpenAdjust(vlc_object_t *obj)
     sys->d3d_dev = &dev_sys->d3d_dev;
     DXGI_FORMAT format = vtcx_sys->format;
 
+    d3d11_device_lock(sys->d3d_dev);
+
     if (D3D11_CreateProcessor(filter, sys->d3d_dev, D3D11_VIDEO_FRAME_FORMAT_PROGRESSIVE,
                               &filter->fmt_out.video, &filter->fmt_out.video, &sys->d3d_proc) != VLC_SUCCESS)
         goto error;
@@ -509,6 +511,7 @@ static int D3D11OpenAdjust(vlc_object_t *obj)
     filter->pf_video_filter = Filter;
     filter->p_sys = sys;
     filter->vctx_out = vlc_video_context_Hold(filter->vctx_in);
+    d3d11_device_unlock(sys->d3d_dev);
 
     return VLC_SUCCESS;
 error:
@@ -525,6 +528,7 @@ error:
     if (sys->out[1].texture)
         ID3D11Texture2D_Release(sys->out[1].texture);
     D3D11_ReleaseProcessor(&sys->d3d_proc);
+    d3d11_device_unlock(sys->d3d_dev);
     free(sys);
 
     return VLC_EGENERIC;

modules/hw/d3d11/d3d11_surface.c

@@ -83,6 +83,8 @@ static int SetupProcessor(filter_t *p_filter, d3d11_device_t *d3d_dev,
     filter_sys_t *sys = p_filter->p_sys;
     HRESULT hr;
 
+    d3d11_device_lock(sys->d3d_dev);
+
     if (D3D11_CreateProcessor(p_filter, d3d_dev, D3D11_VIDEO_FRAME_FORMAT_PROGRESSIVE,
                               &p_filter->fmt_in.video, &p_filter->fmt_out.video, &sys->d3d_proc) != VLC_SUCCESS)
         goto error;
@@ -123,6 +125,7 @@ static int SetupProcessor(filter_t *p_filter, d3d11_device_t *d3d_dev,
                 msg_Err(p_filter, "Failed to create the processor output. (hr=0x%lX)", hr);
             else
             {
+                d3d11_device_unlock(sys->d3d_dev);
                 return VLC_SUCCESS;
             }
         }
@@ -135,6 +138,7 @@ static int SetupProcessor(filter_t *p_filter, d3d11_device_t *d3d_dev,
 
 error:
     D3D11_ReleaseProcessor(&sys->d3d_proc);
+    d3d11_device_unlock(sys->d3d_dev);
     return VLC_EGENERIC;
 }
 #endif