Part Number: TDA2HG
Hello:
SDK:
VisionSDK 3.05
Display data flow :
QT-APP -->weston(RGB)-->VDRM -->dispaly_m4-->lvds(yuv422)
- displaytype
gChains_usecaseCfg.displayType = CHAINS_DISPLAY_TYPE_LCD_10_INCH;
else if(displayType == CHAINS_DISPLAY_TYPE_LCD_10_INCH)
{
pPrm->deviceId = DISPLAYCTRL_LINK_USE_LCD;
pVInfo->vencId = SYSTEM_DCTRL_DSS_VENC_LCD1;
pVInfo->outputPort = SYSTEM_DCTRL_DSS_DPI1_OUTPUT;
pVInfo->vencOutputInfo.vsPolarity = SYSTEM_DCTRL_POLARITY_ACT_LOW;
pVInfo->vencOutputInfo.hsPolarity = SYSTEM_DCTRL_POLARITY_ACT_LOW;
/* Below are of dont care for EVM LCD */
pVInfo->vencOutputInfo.fidPolarity = SYSTEM_DCTRL_POLARITY_ACT_HIGH;
pVInfo->vencOutputInfo.actVidPolarity = SYSTEM_DCTRL_POLARITY_ACT_HIGH;
pVInfo->mInfo.standard = SYSTEM_STD_CUSTOM;
pVInfo->mInfo.width = displayWidth;
pVInfo->mInfo.height = displayHeight;
pVInfo->mInfo.scanFormat = SYSTEM_SF_PROGRESSIVE;
pVInfo->mInfo.pixelClock = 74500U;
pVInfo->mInfo.fps = 60U;
pVInfo->mInfo.hBackPorch = 80U;
pVInfo->mInfo.hSyncLen = 62U;
pVInfo->mInfo.hFrontPorch = 48U;
pVInfo->mInfo.vBackPorch = 12U;
pVInfo->mInfo.vSyncLen = 35U;
pVInfo->mInfo.vFrontPorch = 6U;
pVInfo->vencDivisorInfo.divisorLCD = 1;
pVInfo->vencDivisorInfo.divisorPCD = 1;
pVInfo->vencOutputInfo.dataFormat = SYSTEM_DF_RGB24_888;
pVInfo->vencOutputInfo.dvoFormat =
SYSTEM_DCTRL_DVOFMT_GENERIC_DISCSYNC;
pVInfo->vencOutputInfo.videoIfWidth = SYSTEM_VIFW_24BIT;
pVInfo->vencOutputInfo.pixelClkPolarity = SYSTEM_DCTRL_POLARITY_ACT_LOW;
pVInfo->vencOutputInfo.aFmt = SYSTEM_DCTRL_A_OUTPUT_MAX;
/* Configure overlay params */
ovlyPrms->vencId = SYSTEM_DCTRL_DSS_VENC_LCD1;- vdrm in dts
vdrm0: vdrm@0 {
compatible = "ti,dra7-vdrm";
vdrm0_crtc0: crtc@0 {
compatible = "ti,dra7-vdrm-crtc";
x-res = <1280>;
y-res = <720>;
refresh = <60>;
supported-formats = <DT_DRM_FORMAT_XRGB8888 DT_DRM_FORMAT_ARGB8888>;
};
}; sprintf((char *)pUcObj->DispDistSrc_westonPrm.vDrmControllerName,
V_CONTROLLER_NAME);
pUcObj->DispDistSrc_westonPrm.vDrmControllerObjectId = VDRM_CRTC;
pUcObj->DispDistSrc_westonPrm.vDrmControllerObjectType =
DISP_DIST_SRC_LINK_DRM_OBJECT_TYPE_CRTC;
pUcObj->DispDistSrc_westonPrm.width = displayWidth;
pUcObj->DispDistSrc_westonPrm.height = displayHeight;
pUcObj->DispDistSrc_westonPrm.format = SYSTEM_DF_BGRX24_8888;
DisplayLink_CreateParams *pPrm_display;
pPrm_display = &pUcObj->Display_m4Prm;
pPrm_display->rtParams.tarWidth = displayWidth;
pPrm_display->rtParams.tarHeight = displayHeight;
pPrm_display->rtParams.posX = 0;
pPrm_display->rtParams.posY = 0;
pPrm_display->displayId = DISPLAY_LINK_INST_DSS_VID1;
ChainsCommon_SetDisplayPrms(&pUcObj->Display_m4Prm, NULL,
pObj->chainsCfg->displayType, displayWidth,
displayHeight);and the document(PROCESSOR_SDK_VISION_03_07_00_00_Docs_Only/docs/TrainingSlides/Video_Drivers_Overview.pdf) say for video pipeline it can do color space conversion.
Question
- in this case, how we can directly output the RGB to yuv over LVDS
- or configure the weston output to yuv422
- Can we set pVInfo->vencOutputInfo.dataFormat = SYSTEM_DF_YUV422I_YUYV
Thanks.
