NVIDIA FX5500 User Guide - Page 72
Nv_ctrl_gvo_sync_source, Nv_ctrl_gvo_output_video_format
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CHAPTER 5 API Control * 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 * format. */ #define NV_CTRL_GVO_SYNC_MODE #define NV_CTRL_GVO_SYNC_MODE_FREE_RUNNING #define NV_CTRL_GVO_SYNC_MODE_GENLOCK #define NV_CTRL_GVO_SYNC_MODE_FRAMELOCK 68 /* RW- */ 0 1 2 NV_CTRL_GVO_SYNC_SOURCE /* * NV_CTRL_GVO_SYNC_SOURCE - if NV_CTRL_GVO_SYNC_MODE is set to either * GENLOCK or FRAMELOCK, this controls which sync source is used as * the incoming sync signal (either Composite or SDI). If * NV_CTRL_GVO_SYNC_MODE is FREE_RUNNING, this attribute has no * effect. */ #define NV_CTRL_GVO_SYNC_SOURCE #define NV_CTRL_GVO_SYNC_SOURCE_COMPOSITE #define NV_CTRL_GVO_SYNC_SOURCE_SDI 69 /* RW- */ 0 1 NV_CTRL_GVO_OUTPUT_VIDEO_FORMAT /* * NV_CTRL_GVO_OUTPUT_VIDEO_FORMAT - specifies the output video * format. Note that the valid video formats will vary depending on * the NV_CTRL_GVO_SYNC_MODE and the incoming sync video format. See * the definition of NV_CTRL_GVO_SYNC_MODE. * * Note that when querying the ValidValues for this data type, the * values are reported as bits within a bitmask * (ATTRIBUTE_TYPE_INT_BITS); unfortunately, there are more valid * value bits than will fit in a single 32-bit value. To solve this, * query the ValidValues for NV_CTRL_GVO_OUTPUT_VIDEO_FORMAT to check NVIDIA Corporation 68 Quadro FX 4500/5500 SDI User's Guide- Version 2.0