1 files changed, 64 insertions, 0 deletions
diff --git a/video/out/opengl/hwdec_dxva2.c b/video/out/opengl/hwdec_dxva2.c
new file mode 100644
index 0000000000..f6b3ac0e74
--- /dev/null
+++ b/video/out/opengl/hwdec_dxva2.c
@@ -0,0 +1,64 @@
+#include "common/common.h"
+
+#include "hwdec.h"
+#include "utils.h"
+#include "video/d3d.h"
+#include "video/hwdec.h"
+
+// This does not provide real (zero-copy) interop - it merely exists for
+// making sure the same D3D device is used for decoding and display, which
+// may help with OpenGL fullscreen mode.
+
+struct priv {
+    struct mp_d3d_ctx ctx;
+};
+
+static void destroy(struct gl_hwdec *hw)
+{
+    struct priv *p = hw->priv;
+    if (p->ctx.d3d9_device)
+        IDirect3DDevice9_Release(p->ctx.d3d9_device);
+}
+
+static int create(struct gl_hwdec *hw)
+{
+    GL *gl = hw->gl;
+    if (hw->hwctx || !gl->MPGetD3DInterface)
+        return -1;
+
+    struct priv *p = talloc_zero(hw, struct priv);
+    hw->priv = p;
+
+    p->ctx.d3d9_device = gl->MPGetD3DInterface("IDirect3DDevice9");
+    if (!p->ctx.d3d9_device)
+        return -1;
+
+    p->ctx.hwctx.type = HWDEC_DXVA2_COPY;
+    p->ctx.hwctx.d3d_ctx = &p->ctx;
+
+    MP_VERBOSE(hw, "Using libmpv supplied device %p.\n", p->ctx.d3d9_device);
+
+    hw->hwctx = &p->ctx.hwctx;
+    hw->converted_imgfmt = 0;
+    return 0;
+}
+
+static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
+{
+    return -1;
+}
+
+static int map_image(struct gl_hwdec *hw, struct mp_image *hw_image,
+                     GLuint *out_textures)
+{
+    return -1;
+}
+
+const struct gl_hwdec_driver gl_hwdec_dxva2 = {
+    .api_name = "dxva2",
+    .imgfmt = -1,
+    .create = create,
+    .reinit = reinit,
+    .map_image = map_image,
+    .destroy = destroy,
+};