matrox/engine/mga_bes.c

77 			/* width < 2 is not allowed */
88 	/* width < 2 is not allowed */
89 	if (si->overlay.ow.width < 2)
96 		if ((si->overlay.ow.h_start + si->overlay.ow.width - 1) > (crtc_hend - 1))
103 			if ((si->overlay.ow.h_start + si->overlay.ow.width - 1) < (crtc_hstart + 1))
105 				/* width < 2 is not allowed */
111 				temp2 = ((uint16)(si->overlay.ow.h_start + si->overlay.ow.width - crtc_hstart - 1)) & 0x7ff;
191 		if ((si->overlay.ow.h_start + si->overlay.ow.width - 1) < (crtc_hstart + 1))
193 			/* increase 'first contributing pixel' with 'fixed value': (total dest. width - 2) */
194 			moi->hsrcstv += (si->overlay.ow.width - 2);
222 	if ((si->overlay.ow.h_start + si->overlay.ow.width - 1) > (crtc_hend - 1))
228 			/* increase 'number of clipping pixels' with 'fixed value': (total dest. width - 2) */
229 			moi->hsrcendv += (si->overlay.ow.width - 2);
234 			moi->hsrcendv += ((si->overlay.ow.h_start + si->overlay.ow.width - 1) - (crtc_hend - 1));
242 		moi->hsrcendv = (((uint32)((si->overlay.my_ov.h_start + si->overlay.my_ov.width) - 1)) << 16) - moi->hsrcendv;
247 		moi->hsrcendv = (((uint32)((si->overlay.my_ov.h_start + si->overlay.my_ov.width) - 1)) << 16);
364 	 * 'ow->width' and 'ow->height' are the output window size: does not change
417 	if (my_ov.width == 0) my_ov.width++;
419 	if (my_ov.h_start > ((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1))
420 		my_ov.h_start = ((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1);
421 	if (((my_ov.h_start + my_ov.width) - 1) > ((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1))
422 		my_ov.width = ((((ob->width - si->overlay.myBufInfo[offset].slopspace) - 1) - my_ov.h_start) + 1);
428 	LOG(6,("Overlay: inputbuffer view (zoom) left %d, top %d, width %d, height %d\n",
429 		my_ov.h_start, my_ov.v_start, my_ov.width, my_ov.height));
441 	LOG(6,("Overlay: total input picture width = %d, height = %d\n",
442 			(ob->width - si->overlay.myBufInfo[offset].slopspace), ob->height));
443 	LOG(6,("Overlay: output picture width = %d, height = %d\n", ow->width, ow->height));
449 		if ((my_ov.width == ow->width) | (ow->width < 2))
451 			/* no horizontal scaling used, OR destination width < 2 */
462 		if ((ow->width < my_ov.width) & (ow->width >= 2))
464 			/* horizontal downscaling used AND destination width >= 2 */
476 	ifactor = (((uint32)(my_ov.width - intrep)) << 16) / (ow->width - intrep);
489 	if (((((uint32)my_ov.width) << 16) / 16384) > hiscalv)
492 		hiscalv = ((((uint32)my_ov.width) << 16) / 16384);
580 	hsrclstv = ((ob->width - 1) - si->overlay.myBufInfo[offset].slopspace) << 16;
671 	if ((ow->flags & B_OVERLAY_VERTICAL_FILTERING) && (viscalv < (0x01 << 16)) && (ob->width <= 1024))	{
768 	BESW(PITCH, (ob->width & 0x00000fff));