|typedef VdpStatus||VdpDeviceCreateX11 (Display *display, int screen, VdpDevice *device, VdpGetProcAddress **get_proc_address)|
|Create a VdpDevice object for use with X11. |
|typedef VdpStatus||VdpPresentationQueueTargetCreateX11 (VdpDevice device, Drawable drawable, VdpPresentationQueueTarget *target)|
|Create a VdpPresentationQueueTarget for use with X11. |
|Create a VdpDevice object for use with X11. This is an actual symbol of type VdpDeviceCreateX11. |
The set of VDPAU functionality specific to usage with the X Window System.
An X11-oriented VDPAU installation consists of the following components:
The VDPAU wrapper library implements just one function; vdp_device_create_x11. The wrapper will implement this function by dynamically loading the appropriate back-end driver file mentioned above. Long-term, the wrapper will use a VDPAU-specific X extension to determine which back-end driver to load. Currently, the wrapper library hard-codes the driver name as "nvidia", although this can be overridden using the environment variable VDPAU_DRIVER.
The back-end driver is expected to implement a function named vdp_imp_device_create_x11. The wrapper will call this function to actually implement the vdp_device_create_x11 application call.
Note that it is theoretically possible for an application to create multiple VdpDevice objects. In this case, the wrapper library may load multiple back-end drivers into the same application, and/or invoke a specific back-end driver's VdpImpDeviceCreateX11 multiple times. The wrapper libray imposes no policy regarding whether the application may instantiate multiple VdpDevice objects for the same display and/or screen. However, back-end drivers are free to limit the number of VdpDevice objects as required by their implementation.
|typedef VdpStatus VdpDeviceCreateX11(Display *display, int screen,VdpDevice *device, VdpGetProcAddress **get_proc_address)|
Create a VdpDevice object for use with X11.
|[in]||display||The X Display that the VdpDevice VdpDevice will operate against.|
|[in]||screen||The X screen that the VdpDevice will operate against.|
|[out]||device||The new device's handle.|
|[out]||get_proc_address||The get_proc_address entry point to use with this device.|
|typedef VdpStatus VdpPresentationQueueTargetCreateX11(VdpDevice device, Drawable drawable,VdpPresentationQueueTarget *target)|
Create a VdpPresentationQueueTarget for use with X11.
|[in]||device||The device that will contain the queue target.|
|[in]||drawable||The X11 Drawable that the presentation queue will present into.|
|[out]||target||The new queue target's handle.|
Note: VDPAU expects to own the entire drawable for the duration of time that the presentation queue target exists. In particular, implementations may choose to manipulate client-visible X11 window state as required. As such, it is recommended that applications create a dedicated window for the presentation queue target, as a child (grand-child, ...) of their top-level application window.
Applications may also create child-windows of the presentation queue target, which will cover any presented video in the normal fashion. VDPAU implementations will not manipulate such child windows in any fashion.