Nvidia Quadro FX 4500 Software Manual page 85

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Possible errors:
• BadMatch - The NVIDIA driver is not present on that screen.
• BadImplementation - GVO is not available on that screen.
XNVCTRLQueryGvoColorConversion()
Bool XNVCTRLQueryGvoColorConversion (
);
This function retrieves the color conversion matrix and color offset that are currently
being used for GVO (Graphic to Video Out). The values are ordered within the arrays
according to the comments for XNVCTRLSetGvoColorConversion().
Possible errors:
• BadMatch - The NVIDIA driver is not present on that screen.
• BadImplementation - GVO is not available on that screen.
NVIDIA Corporation
Quadro FX 4500/5500 SDI User's Guide – Version 2.0
Cr = colorOffset[1] + colorScale[1] *
(R * colorMatrix[1][0] + G * colorMatrix[1][1] + B * colorMatrix[1][2]);
Cb = colorOffset[2] + colorScale[2] *
(R * colorMatrix[2][0] + G * colorMatrix[2][1] + B * colorMatrix[2][2]);
Display *dpy,
int screen,
float colorMatrix[3][3],
float colorOffset[3],
float colorScale[3]
C 5
HAPTER
API Control
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