NVIDIA FX5500 User Guide - Page 85
XNVCTRLQueryGvoColorConversion() - fx 5500 video driver
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CHAPTER 5 API Control • 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]); Possible errors: • BadMatch - The NVIDIA driver is not present on that screen. • BadImplementation - GVO is not available on that screen. XNVCTRLQueryGvoColorConversion() Bool XNVCTRLQueryGvoColorConversion ( Display *dpy, int screen, float colorMatrix[3][3], float colorOffset[3], float colorScale[3] ); 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 81