IDirect3DDeviceManager9::GetVideoService method (dxva2api.h)

Article
10/13/2021

Gets a DirectX Video Acceleration (DXVA) service interface.

Syntax

HRESULT GetVideoService(
  [in]  HANDLE hDevice,
  [in]  REFIID riid,
  [out] void   **ppService
);

Parameters

[in] hDevice

A handle to a Direct3D device. To get a device handle, call IDirect3DDeviceManager9::OpenDeviceHandle.

[in] riid

The interface identifier (IID) of the requested interface. The Direct3D device might support the following DXVA service interfaces:

[out] ppService

Receives a pointer to the requested interface. The caller must release the interface.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.
DXVA2_E_NEW_VIDEO_DEVICE	The device handle is invalid.
DXVA2_E_NOT_AVAILABLE	The Direct3D device does not support video acceleration.
DXVA2_E_NOT_INITIALIZED	The Direct3D device manager was not initialized. The owner of the device must call IDirect3DDeviceManager9::ResetDevice.
E_HANDLE	The specified handle is not a Direct3D device handle.

Remarks

If the method returns DXVA2_E_NEW_VIDEO_DEVICE, call IDirect3DDeviceManager9::CloseDeviceHandle to close the handle and then call OpenDeviceHandle again to get a new handle. The IDirect3DDeviceManager9::ResetDevice method invalidates all open device handles.

Examples

HRESULT GetVideoProcessorService(
    IDirect3DDeviceManager9 *pDeviceManager,
    IDirectXVideoProcessorService **ppVPService
    )
{
    *ppVPService = NULL;

    HANDLE hDevice;

    HRESULT hr = pDeviceManager->OpenDeviceHandle(&hDevice);
    if (SUCCEEDED(hr))
    {
        // Get the video processor service 
        HRESULT hr2 = pDeviceManager->GetVideoService(
            hDevice, 
            IID_PPV_ARGS(ppVPService)
            );

        // Close the device handle.
        hr = pDeviceManager->CloseDeviceHandle(hDevice);

        if (FAILED(hr2))
        {
            hr = hr2;
        }
    }

    if (FAILED(hr))
    {
        SafeRelease(ppVPService);
    }

    return hr;
}

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2008 [desktop apps only]
Target Platform	Windows
Header	dxva2api.h

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