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Quadro SDI Output PG-03776-001_v06

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4 DEVICE SETUP AND CONTROL

Before graphics data can be transferred to the Quadro SDI for scan out as serial digital

video, the video device must be properly configured for the desired video signal format,

data format, timing, color space and genlock or framelock synchronization. This

hardware configuration is performed by NVAPI on Microsoft Windows-based systems

and the

NV-CONTROL X extension on Linux-based systems. The remainder of this section

will describe the step by step process required to configure the video device. For

additional information on the functions described, refer to the NVAPI Online Help or

NV-

CONTROL

extension specification and included files.

4.1 INITIALIZE NVAPI

Prior to using NVAPI on Windows, it is necessary to initialize NVAPI. This is done by

calling

NvAPI_Initialize() as shown in the following Code Listing.

Code Listing 1: Initializing NVAPI

// Initialize NVAPI

if (NvAPI_Initialize() != NVAPI_OK) {

MessageBox(NULL, "Error Initializing NVAPI.", "Error", MB_OK);

return E_FAIL;

}





Note: Structures passed to NVAPI functions for returning NVAPI state must be

initialized to 0. This is done in the Code Listings in this document by calling

memset().

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SDI Technologies iH30 Especificaciones Pagina 10