SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
Each scaler filter implements the ROI scaling as shown below with input and output trimmers. The input trimmer simply marks the beginning of the ROI to indicate where the valid source pixels and lines start in the source image. Doing the source ROI marker allows the exact specification of a sub-image in a common source image (no position or size restriction) while keeping the original boundary pixels (that is, not use the replicated pixels/lines).
The output trimmers then uses destination size parameters (VPAC_MSC_CORE_OUT_SIZE_j[28-16] HEIGHT and VPAC_MSC_CORE_OUT_SIZE_j[12-0] WIDTH) to trim out the exact final output image sizes.
VPAC_MSC does not perform output size correction by stuffing extra pixels in the case the programmed VPAC_MSC_CORE_OUT_SIZE_j[28-16] HEIGHT and VPAC_MSC_CORE_OUT_SIZE_j[12-0] WIDTH exceeds the actual output size of the scaler. In this case, VPAC_MSC simply outputs the actual size.