SDI Technologies iH30 Especificações descarregar pdf (Página 113)

NV Control VIO Controls

Quadro SDI Output PG-03776-001_v06 | 108

* - if using the GLX_NV_video_out extension to display one or more

* pbuffers, call glXGetVideoDeviceNV() to lock the GVO output for use

* by the GLX client; then bind the pbuffer(s) to the GVO output with

* glXBindVideoImageNV() and send pbuffers to the GVO output with

* glXSendPbufferToVideoNV(); see the GLX_NV_video_out spec for more

* details.

* - if, rather than using the GLX_NV_video_out extension to display

* GLX pbuffers on the GVO output, you wish display the X screen on

* the GVO output, set NV_CTRL_GVO_DISPLAY_X_SCREEN to

* NV_CTRL_GVO_DISPLAY_X_SCREEN_ENABLE.

* Note that setting most GVO attributes only causes the value to be

* cached in the X server. The values will be flushed to the hardware

* either when NV_CTRL_GVO_DISPLAY_X_SCREEN is enabled, or when a GLX

* pbuffer is bound to the GVO output (with glXBindVideoImageNV()).

* Note that GLX_NV_video_out and NV_CTRL_GVO_DISPLAY_X_SCREEN are

* mutually exclusive. 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 - 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 67 /*

R-- */

#define NV_CTRL_GVO_SUPPORTED_FALSE 0

#define NV_CTRL_GVO_SUPPORTED_TRUE 1

* 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 frame locked to an incoming sync

* signal; frame locking locks at vsync. This requires that the output

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SDI Technologies iH30 Especificações Página 113