NVIDIA FX4500 User Guide - Page 84
Nv_ctrl_gvo_supported, Nv_ctrl_gvo_sync_mode, Nv_ctrl_gvo_display_x_screen, Nv_ctrl_gvo_glx_locked
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Page 84 highlights
Chapter 05 : API Control If NV_CTRL_GVO_DISPLAY_X_SCREEN is enabled, then glXGetVideoDeviceNV will fail. Similarly, if a GLX client has locked the GVO output (via glXGetVideoDeviceNV), then NV_CTRL_GVO_DISPLAY_X_SCREEN will fail. The NV_CTRL_GVO_GLX_LOCKED event will be sent when a GLX client locks the GVO output. NV_CTRL_GVO_SUPPORTED /* * NV_CTRL_GVO_SUPPORTED - returns whether this X screen supports GVO; * if this screen does not support GVO output, then all other GVO * attributes are unavailable. */ #define NV_CTRL_GVO_SUPPORTED - */ #define NV_CTRL_GVO_SUPPORTED_FALSE #define NV_CTRL_GVO_SUPPORTED_TRUE 67 /* R- 0 1 NV_CTRL_GVO_SYNC_MODE /* * NV_CTRL_GVO_SYNC_MODE - selects the GVO sync mode; possible values * are: * * FREE_RUNNING - GVO does not sync to any external signal * * GENLOCK - the GVO output is genlocked to an incoming sync signal; * genlocking locks at hsync. This requires that the output video * format exactly match the incoming sync video format. * * FRAMELOCK - the GVO output is framelocked to an incoming sync * signal; framelocking locks at vsync. This requires that the output * video format have the same refresh rate as the incoming sync video Quadro 4000/5000/6000 SDI DU-05337-001_v01 | 80
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