NVIDIA FX4500 User Guide - Page 93
#define Nv_ctrl_gvo_glx_locked_true 1, Nv_ctrl_gvo_video_format_{width, Height
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Chapter 05 : API Control * NV_CTRL_GVO_GLX_LOCKED - indicates that GVO configurability is locked by * GLX; this occurs when the GLX_NV_video_out function calls * glXGetVideoDeviceNV(). All GVO output resources are locked until * either glXReleaseVideoDeviceNV() is called or the X Display used * when calling glXGetVideoDeviceNV() is closed. * * When GVO is locked, setting of the following GVO NV-CONTROL attributes will * not happen immediately and will instead be cached. The GVO resource will * need to be disabled/released and re-enabled/claimed for the values to be * flushed. These attributes are: * NV_CTRL_GVO_OUTPUT_VIDEO_FORMAT * NV_CTRL_GVO_DATA_FORMAT * NV_CTRL_GVO_FLIP_QUEUE_SIZE * * XXX This is deprecated, please see NV_CTRL_GVO_LOCK_OWNER */ #define NV_CTRL_GVO_GLX_LOCKED - */ #define NV_CTRL_GVO_GLX_LOCKED_FALSE #define NV_CTRL_GVO_GLX_LOCKED_TRUE 82 /* R0 1 NV_CTRL_GVO_VIDEO_FORMAT_{WIDTH,HEIGHT,REFRESH_RATE} /* * NV_CTRL_GVO_VIDEO_FORMAT_{WIDTH,HEIGHT,REFRESH_RATE} - query the * width, height, and refresh rate for the specified * NV_CTRL_GVO_VIDEO_FORMAT_*. So that this can be queried with * existing interfaces, XNVCTRLQueryAttribute() should be used, and * the video format specified in the display_mask field; eg: Quadro 4000/5000/6000 SDI DU-05337-001_v01 | 89