36 #define STG4000_OVRL_ALIGN     2
57 	/*clipped on-screen pixel position of overlay */
63 	/*clipped pixel pos of source data within buffer thses need to be 128 bit word aligned */
69 	/* on-screen pixel position of overlay */
152 		return -EINVAL;  in CreateOverlaySurface()
155 	/* Stride in 16 byte words - 16Bpp */  in CreateOverlaySurface()
190 		    (inWidth & 0x1) ? (inWidth + 1 / 2) : (inWidth / 2);  in CreateOverlaySurface()
202 		/* Align U,V data to 32byte boundary */  in CreateOverlaySurface()
211 		ulOffset += (inHeight / 2) * (uvStride * 16);  in CreateOverlaySurface()
212 		/* Align U,V data to 32byte boundary */  in CreateOverlaySurface()
225 	/* Set Overlay YUV pixel format  in CreateOverlaySurface()
226 	 * Make sure that LUT not used - ??????  in CreateOverlaySurface()
280 		return -EINVAL;  in SetOverlayBlendMode()
309 		ulBits--;  in Overlap()
348 	srcDest.ulSrcX2 = ovlWidth - 1;  in SetOverlayViewPort()
349 	srcDest.ulSrcY2 = ovlHeight - 1;  in SetOverlayViewPort()
367 	ulSrc = ulSrcBottom - ulSrcTop;  in SetOverlayViewPort()
368 	ulDest = srcDest.lDstY2 - srcDest.lDstY1;	/* on-screen overlay */  in SetOverlayViewPort()
371 		return -EINVAL;  in SetOverlayViewPort()
377 	ulFxOffset = (srcDest.lDstY2 - srcDest.ulDstY2) << 11;  in SetOverlayViewPort()
379 	ulSrcBottom = ulSrcBottom - (ulFxOffset / ulFxScale);  in SetOverlayViewPort()
380 	ulSrc = ulSrcBottom - ulSrcTop;  in SetOverlayViewPort()
383 	ulDest = srcDest.ulDstY2 - (srcDest.ulDstY1 - 1);  in SetOverlayViewPort()
388 		ulDecimate = ulSrc - ulDest;  in SetOverlayViewPort()
401 		ulSrc = ulSrc - ulDecimated;	/* the number number of lines that will go into the scaler */  in SetOverlayViewPort()
405 …ulVertDecFactor = (63 - ulBits) / (32 - ulBits);	/* vertical decimation factor scaled up to neares…  in SetOverlayViewPort()
410 	ulDacYScale = ((ulSrc - 1) * 2048) / (ulDest + 1);  in SetOverlayViewPort()
421 	 * the vertical case in that we decimate by factors of 2.  as we are  in SetOverlayViewPort()
424 	 * whole number of 128 bit words, we must align the left side to the  in SetOverlayViewPort()
431 	ulSrc = srcDest.ulSrcX2 - srcDest.ulSrcX1;  in SetOverlayViewPort()
432 	ulDest = srcDest.lDstX2 - srcDest.lDstX1;  in SetOverlayViewPort()
437 	if (srcDest.ulDstX1 > 2) {  in SetOverlayViewPort()
438 		ulLeft = srcDest.ulDstX1 + 2;  in SetOverlayViewPort()
450 			return -EINVAL;  in SetOverlayViewPort()
452 		/* source pixels per dest pixel <<11 */  in SetOverlayViewPort()
453 		ulFxScale = ((ulSrc - 1) << 11) / (ulDest);  in SetOverlayViewPort()
456 		ulFxOffset = ulFxScale * ((srcDest.ulDstX1 - srcDest.lDstX1) + ulClipOff);  in SetOverlayViewPort()
463 		ulFxOffset = ulFxScale * (srcDest.lDstX2 - srcDest.ulDstX2);  in SetOverlayViewPort()
466 		ulSrcRight = srcDest.ulSrcX2 - ulFxOffset;  in SetOverlayViewPort()
469 		 * we must align these to our 128 bit boundaries. we shall  in SetOverlayViewPort()
470 		 * round down the pixel pos to the nearest 8 pixels.  in SetOverlayViewPort()
476 		ulScale = (((ulSrcRight - ulSrcLeft) - 1) << (11 - ulhDecim)) / (ulRight - ulLeft + 2);  in SetOverlayViewPort()
480 			ulScale = (((ulSrcRight - ulSrcLeft) - 1) << (11 - ulhDecim)) / (ulRight - ulLeft + 2);  in SetOverlayViewPort()
485 		 * src/dwdest for the scale factor, then we move onto src-1  in SetOverlayViewPort()
494 			 * we must align the right hand edge to the next 32  in SetOverlayViewPort()
495 			 * pixel` boundary, must be on a 256 boundary so u, and  in SetOverlayViewPort()
503 			 * we must align the right hand edge to the next  in SetOverlayViewPort()
504 			 * 8pixel` boundary  in SetOverlayViewPort()
510 		ulWidth = ulSrcRight - ulSrcLeft;  in SetOverlayViewPort()
525 		if (ulSrc <= 2)  in SetOverlayViewPort()
526 			return -EINVAL;  in SetOverlayViewPort()
528 		ulExcessPixels = ((((ulScaleLeft - ulSrcLeft)) << (11 - ulhDecim)) / ulScale);  in SetOverlayViewPort()
531 		ulClip -= (ulRight - ulLeft);  in SetOverlayViewPort()
535 			ulClip--;  in SetOverlayViewPort()
569 		     (((ulWidth / 8) - 1) << 23));  in SetOverlayViewPort()
573 		     (((ulWidth / 32) - 1) << 23));  in SetOverlayViewPort()