video: refactor hw device creation for hwdec copy modes

Lots of shit code for nothing. We probably could just use libavutil's
code for all of this. But for now go with this, since it tends to
prevent stupid terminal messages during probing (libavutil has no
mechanism to selectively suppress errors specifically during probing).

Ignores the "emulated" API flag (for avoiding vaapi/vdpau wrappers), but
it doesn't matter that much for -copy anyway.

1 files changed, 33 insertions, 3 deletions

diff --git a/video/decode/d3d.c b/video/decode/d3d.c
index cab878bafe..a9b67eb0a9 100644
--- a/video/decode/d3d.c
+++ b/video/decode/d3d.c
@@ -124,8 +124,38 @@ static void d3d11_complete_image_params(struct mp_image *img)
         mp_image_setfmt(img, IMGFMT_D3D11NV12);
 }
 
+static struct AVBufferRef *d3d11_create_standalone(struct mpv_global *global,
+        struct mp_log *plog, struct hwcontext_create_dev_params *params)
+{
+    ID3D11Device *device = NULL;
+    HRESULT hr;
+
+    d3d_load_dlls();
+    if (!d3d11_D3D11CreateDevice) {
+        mp_err(plog, "Failed to load D3D11 library\n");
+        return NULL;
+    }
+
+    hr = d3d11_D3D11CreateDevice(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL,
+                                 D3D11_CREATE_DEVICE_VIDEO_SUPPORT, NULL, 0,
+                                 D3D11_SDK_VERSION, &device, NULL, NULL);
+    if (FAILED(hr)) {
+        mp_err(plog, "Failed to create D3D11 Device: %s\n",
+               mp_HRESULT_to_str(hr));
+        return NULL;
+    }
+
+    AVBufferRef *avref = d3d11_wrap_device_ref(device);
+    ID3D11Device_Release(device);
+    if (!avref)
+        mp_err(plog, "Failed to allocate AVHWDeviceContext.\n");
+
+    return avref;
+}
+
 const struct hwcontext_fns hwcontext_fns_d3d11 = {
-    .av_hwdevice_type = AV_HWDEVICE_TYPE_D3D11VA,
-    .complete_image_params = d3d11_complete_image_params,
-    .refine_hwframes = d3d11_refine_hwframes,
+    .av_hwdevice_type       = AV_HWDEVICE_TYPE_D3D11VA,
+    .complete_image_params  = d3d11_complete_image_params,
+    .refine_hwframes        = d3d11_refine_hwframes,
+    .create_dev             = d3d11_create_standalone,
 };