NVIDIA FX5500 User Guide - Page 78
Nv_ctrl_gvo_locked, Nv_ctrl_gvo_video_format_{width, Height, Refresh_rate}, Refresh_rate} - Query
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CHAPTER 5 API Control NV_CTRL_GVO_LOCKED /* * NV_CTRL_GVO_LOCKED - indicates that GVO configurability is locked; * 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; all GVO NV-CONTROL attributes are read only. */ #define NV_CTRL_GVO_GLX_LOCKED #define NV_CTRL_GVO_GLX_LOCKED_FALSE #define NV_CTRL_GVO_GLX_LOCKED_TRUE 82 /* R-- */ 0 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: * * XNVCTRLQueryAttribute (dpy, * screen, * NV_CTRL_GVO_VIDEO_FORMAT_480I_59_94_SMPTE259_NTSC * NV_CTRL_GVO_VIDEO_FORMAT_WIDTH, * &value); * * Note that Refresh Rate is in 1/1000 Hertz values */ #define NV_CTRL_GVO_VIDEO_FORMAT_WIDTH #define NV_CTRL_GVO_VIDEO_FORMAT_HEIGHT #define NV_CTRL_GVO_VIDEO_FORMAT_REFRESH_RATE 83 /* R-- */ 84 /* R-- */ 85 /* R-- */ NVIDIA Corporation 74 Quadro FX 4500/5500 SDI User's Guide- Version 2.0