SDI Technologies iH30 Especificaciones descargar pdf (Pagina 15)

Device Setup and Control

Quadro SDI Output PG-03776-001_v06 | 10

l_vioSyncDelay.horizontalDelay = hDelay;

l_vioSyncDelay.verticalDelay = vDelay;

l_vioConfig.fields |= NVVIOCONFIG_SYNCDELAY;

l_vioConfig.vioConfig.outConfig.syncDelay = l_gvoSyncDelay;

// Setup external sync

if (NvAPI_VIO_SetConfig(m_vioHandle, &l_vioConfig) != NVAPI_OK) {

return E_FAIL;

}

On Linux, the video device is configured using XNVCTRLSetAttribute. The following

example configures the video device for RGBA 4:4:4:4 input and 1080i YCrCbA 4:2:2:4

video output with composite tri-level sync.

Code Listing 6: Configuring a Video Device on Linux

screen = DefaultScreen(dpy);

// Set video signal format

XNVCTRLSetAttribute(dpy, screen, 0,

NV_CTRL_GVO_OUTPUT_VIDEO_FORMAT,

NV_CTRL_GVO_VIDEO_FORMAT_1080I_59_94_SMPTE274);

// Set video data format

XNVCTRLSetAttribute(dpy, screen, 0,

NV_CTRL_GVO_DATA_FORMAT,

NV_CTRL_GVO_DATA_FORMAT_R8G8B8A8_TO_YCRCBA4224);

// Enable genlock

XNVCTRLSetAttribute(dpy, screen, 0,

NV_CTRL_GVO_SYNC_MODE,

NV_CTRL_GVO_SYNC_MODE_GENLOCK);

// Set sync type to composite.

XNVCTRLSetAttribute(dpy, screen, 0,

NV_CTRL_GVO_SYNC_SOURCE,

NV_CTRL_GVO_SYNC_SOURCE_COMPOSITE);

XFlush(dpy);

// Sleep to allow time for sync detection

sleep(2);

// Detect input sync.

XNVCTRLQueryAttribute(dpy, screen, 0,

NV_CTRL_GVO_COMPOSITE_SYNC_INPUT_DETECTED,

&val);

// If valid sync detected, query input video format.

If (val) {

XNVCTRLQueryAttribute(dpy, screen

NV_CTRL_GVO_INPUT_VIDEO_FORMAT

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 146 147

Sin comentarios

SDI Technologies iH30 Especificaciones Pagina 15