--- branches/dev-api-3/xvidcore/src/motion/motion_est.c	2002/11/25 13:38:56	676
+++ branches/dev-api-3/xvidcore/src/motion/motion_est.c	2002/12/10 11:13:50	702
@@ -54,6 +54,11 @@
 
 #define iDiamondSize 2
 
+static VECTOR
+GlobalMotionEst(const MACROBLOCK * const pMBs, 
+				const MBParam * const pParam, const uint32_t iFcode);
+
+
 static __inline int
 d_mv_bits(int x, int y, const uint32_t iFcode)
 {
@@ -703,6 +708,9 @@
 
 	const VECTOR zeroMV = { 0, 0 };
 
+	int mb_width = pParam->mb_width;
+	int mb_height = pParam->mb_height;
+
 	uint32_t x, y;
 	uint32_t iIntra = 0;
 	int32_t InterBias, quant = current->quant, sad00;
@@ -724,6 +732,12 @@
 	Data.qpel = pParam->m_quarterpel;
 	Data.chroma = current->global_flags & XVID_ME_COLOUR;
 
+	if ((current->global_flags & XVID_REDUCED))
+	{
+		mb_width = (pParam->width + 31) / 32;
+		mb_height = (pParam->height + 31) / 32;
+	}
+
 	if((qimage = (uint8_t *) malloc(32 * pParam->edged_width)) == NULL)
 		return 1; // allocate some mem for qpel interpolated blocks
 				  // somehow this is dirty since I think we shouldn't use malloc outside
@@ -731,8 +745,8 @@
 	Data.RefQ = qimage;
 	if (sadInit) (*sadInit) ();
 
-	for (y = 0; y < pParam->mb_height; y++)	{
-		for (x = 0; x < pParam->mb_width; x++)	{
+	for (y = 0; y < mb_height; y++)	{
+		for (x = 0; x < mb_width; x++)	{
 			MACROBLOCK *pMB = &pMBs[x + y * pParam->mb_width];
 			
 			pMB->sad16 
@@ -902,7 +916,7 @@
 
 	get_pmvdata2(pMBs, pParam->mb_width, 0, x, y, 0, pmv, Data->temp);  //has to be changed to get_pmv(2)()
 	get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
-				pParam->width, pParam->height, Data->iFcode, pParam->m_quarterpel);
+		pParam->width, pParam->height, Data->iFcode - pParam->m_quarterpel);
 
 	Data->Cur = pCur->y + (x + y * Data->iEdgedWidth) * 16;
 	Data->CurV = pCur->v + (x + y * (Data->iEdgedWidth/2)) * 8;
@@ -1017,8 +1031,8 @@
 	if((pParam->m_quarterpel) && (MotionFlags & PMV_QUARTERPELREFINE16)) {
 
 		Data->qpel_precision = 1;
-		get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
-				pParam->width, pParam->height, Data->iFcode, 0);
+		get_range_qpel(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
+				pParam->width, pParam->height, Data->iFcode);
 
 		SubpelRefine(Data);
 	}
@@ -1120,7 +1134,7 @@
 		Data->qpel_precision = 0;
 		
 		get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 8,
-				pParam->width, pParam->height, OldData->iFcode, pParam->m_quarterpel);
+				pParam->width, pParam->height, OldData->iFcode - pParam->m_quarterpel);
 		CheckCandidate = CheckCandidate8;
 
 		if (MotionFlags & PMV_EXTSEARCH8) {
@@ -1154,8 +1168,8 @@
 			if((!(Data->currentQMV->x & 1)) && (!(Data->currentQMV->y & 1)) &&
 				(MotionFlags & PMV_QUARTERPELREFINE8)) {
 			Data->qpel_precision = 1;
-			get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 8,
-				pParam->width, pParam->height, OldData->iFcode, 0);
+			get_range_qpel(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 8,
+				pParam->width, pParam->height, OldData->iFcode);
 			SubpelRefine(Data);
 			}
 		}
@@ -1259,7 +1273,7 @@
 	Data->predMV = *predMV;
 
 	get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
-				pParam->width, pParam->height, iFcode, pParam->m_quarterpel);
+				pParam->width, pParam->height, iFcode - pParam->m_quarterpel);
 
 	pmv[0] = Data->predMV;
 	if (Data->qpel) { pmv[0].x /= 2; pmv[0].y /= 2; }
@@ -1288,8 +1302,8 @@
 		Data->currentQMV->x = 2*Data->currentMV->x;
 		Data->currentQMV->y = 2*Data->currentMV->y;
 		Data->qpel_precision = 1;
-		get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
-					pParam->width, pParam->height, iFcode, 0);
+		get_range_qpel(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
+					pParam->width, pParam->height, iFcode);
 		SubpelRefine(Data);
 	}
 
@@ -1542,8 +1556,8 @@
 	fData->bpredMV = bData.predMV = *b_predMV;
 
 	fData->currentMV[0] = fData->currentMV[2];
-	get_range(&fData->min_dx, &fData->max_dx, &fData->min_dy, &fData->max_dy, x, y, 16, pParam->width, pParam->height, fcode, pParam->m_quarterpel);
-	get_range(&bData.min_dx, &bData.max_dx, &bData.min_dy, &bData.max_dy, x, y, 16, pParam->width, pParam->height, bcode, pParam->m_quarterpel);
+	get_range(&fData->min_dx, &fData->max_dx, &fData->min_dy, &fData->max_dy, x, y, 16, pParam->width, pParam->height, fcode - pParam->m_quarterpel);
+	get_range(&bData.min_dx, &bData.max_dx, &bData.min_dy, &bData.max_dy, x, y, 16, pParam->width, pParam->height, bcode - pParam->m_quarterpel);
 
 	if (fData->currentMV[0].x > fData->max_dx) fData->currentMV[0].x = fData->max_dx;
 	if (fData->currentMV[0].x < fData->min_dx) fData->currentMV[0].x = fData->min_dx;
@@ -1582,8 +1596,8 @@
 	if (fData->qpel) {
 		CheckCandidate = CheckCandidateInt;
 		fData->qpel_precision = bData.qpel_precision = 1;
-		get_range(&fData->min_dx, &fData->max_dx, &fData->min_dy, &fData->max_dy, x, y, 16, pParam->width, pParam->height, fcode, 0);
-		get_range(&bData.min_dx, &bData.max_dx, &bData.min_dy, &bData.max_dy, x, y, 16, pParam->width, pParam->height, bcode, 0);
+		get_range_qpel(&fData->min_dx, &fData->max_dx, &fData->min_dy, &fData->max_dy, x, y, 16, pParam->width, pParam->height, fcode);
+		get_range_qpel(&bData.min_dx, &bData.max_dx, &bData.min_dy, &bData.max_dy, x, y, 16, pParam->width, pParam->height, bcode);
 		fData->currentQMV[2].x = fData->currentQMV[0].x = 2 * fData->currentMV[0].x;
 		fData->currentQMV[2].y = fData->currentQMV[0].y = 2 * fData->currentMV[0].y;
 		fData->currentQMV[1].x = 2 * fData->currentMV[1].x;
@@ -1783,7 +1797,7 @@
 	MainSearchFunc * MainSearchPtr;
 
 	get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
-				pParam->width, pParam->height, Data->iFcode, pParam->m_quarterpel);
+				pParam->width, pParam->height, Data->iFcode - pParam->m_quarterpel);
 
 	Data->Cur = pCur->y + (x + y * Data->iEdgedWidth) * 16;
 	Data->CurV = pCur->v + (x + y * (Data->iEdgedWidth/2)) * 8;
@@ -1846,8 +1860,8 @@
 	}
 
 	if((pParam->m_quarterpel) && (MotionFlags & PMV_QUARTERPELREFINE16)) {
-		get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
-				pParam->width, pParam->height, Data->iFcode, 0);
+		get_range_qpel(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
+				pParam->width, pParam->height, Data->iFcode);
 		Data->qpel_precision = 1;
 		SubpelRefine(Data);
 	}
@@ -2003,7 +2017,7 @@
 			else Data->predMV = get_pmv2(pMBs, pParam->mb_width, 0, x, y, 0); //else median
 
 	get_range(&Data->min_dx, &Data->max_dx, &Data->min_dy, &Data->max_dy, x, y, 16,
-				pParam->width, pParam->height, Data->iFcode, pParam->m_quarterpel);
+				pParam->width, pParam->height, Data->iFcode - pParam->m_quarterpel);
 
 	Data->Cur = pCur + (x + y * pParam->edged_width) * 16;
 	Data->Ref = pRef + (x + y * pParam->edged_width) * 16;
@@ -2048,6 +2062,9 @@
 			int intraCount, //number of non-I frames after last I frame; 0 if we force P/B frame
 			int bCount) // number if B frames in a row
 {
+	int mb_width = pParam->mb_width;
+	int mb_height = pParam->mb_height;
+
 	uint32_t x, y, intra = 0;
 	int sSAD = 0;
 	MACROBLOCK * const pMBs = Current->mbs;
@@ -2063,6 +2080,13 @@
 	Data.iFcode = Current->fcode;
 	CheckCandidate = CheckCandidate16no4vI;
 
+	if ((Current->global_flags & XVID_REDUCED))
+	{
+		mb_width = (pParam->width + 31) / 32;
+		mb_height = (pParam->height + 31) / 32;
+	}
+
+
 	if (intraCount < 10) // we're right after an I frame
 		IntraThresh += 4 * (intraCount - 10) * (intraCount - 10);
 	else
@@ -2075,8 +2099,8 @@
 
 	if (sadInit) (*sadInit) ();
 
-	for (y = 1; y < pParam->mb_height-1; y++) {
-		for (x = 1; x < pParam->mb_width-1; x++) {
+	for (y = 1; y < mb_height-1; y++) {
+		for (x = 1; x < mb_width-1; x++) {
 			int sad, dev;
 			MACROBLOCK *pMB = &pMBs[x + y * pParam->mb_width];
 
@@ -2088,13 +2112,13 @@
 							  pParam->edged_width);
 				if (dev + IntraThresh < sad) {
 					pMB->mode = MODE_INTRA;
-					if (++intra > (pParam->mb_height-2)*(pParam->mb_width-2)/2) return 2;  // I frame
+					if (++intra > (mb_height-2)*(mb_width-2)/2) return 2;  // I frame
 				}
 			}
 			sSAD += sad;
 		}
 	}
-	sSAD /= (pParam->mb_height-2)*(pParam->mb_width-2);
+	sSAD /= (mb_height-2)*(mb_width-2);
 	if (sSAD > InterThresh ) return 1; //P frame
 	emms();
 	return 0; // B frame
@@ -2105,11 +2129,22 @@
 FindFcode(	const MBParam * const pParam,
 			const FRAMEINFO * const current)
 {
+	int mb_width = pParam->mb_width;
+	int mb_height = pParam->mb_height;
+
 	uint32_t x, y;
 	int max = 0, min = 0, i;
 
-	for (y = 0; y < pParam->mb_height; y++) {
-		for (x = 0; x < pParam->mb_width; x++) {
+
+	if ((current->global_flags & XVID_REDUCED))
+	{
+		mb_width = (pParam->width + 31) / 32;
+		mb_height = (pParam->height + 31) / 32;
+	}
+
+
+	for (y = 0; y < mb_height; y++) {
+		for (x = 0; x < mb_width; x++) {
 		
 			MACROBLOCK *pMB = &current->mbs[x + y * pParam->mb_width];
 			for(i = 0; i < (pMB->mode == MODE_INTER4V ? 4:1); i++) {