--- trunk/xvidcore/src/encoder.c	2002/07/29 19:21:23	349
+++ trunk/xvidcore/src/encoder.c	2002/09/03 17:25:45	387
@@ -39,7 +39,7 @@
  *             MinChen <chenm001@163.com>
  *  14.04.2002 added FrameCodeB()
  *
- *  $Id: encoder.c,v 1.66 2002-07-29 19:21:23 chl Exp $
+ *  $Id: encoder.c,v 1.76 2002-09-03 17:25:18 chl Exp $
  *
  ****************************************************************************/
 
@@ -425,6 +425,7 @@
 	pEnc->mbParam.m_ticks = 0;
 	pEnc->m_framenum = 0;
 	pEnc->last_pframe = 0;
+	pEnc->last_sync = 0;
 #endif
 
 	pParam->handle = (void *) pEnc;
@@ -620,17 +621,28 @@
 }
 
 
-#ifdef BFRAMES
 void inc_frame_num(Encoder * pEnc)
 {
-	pEnc->iFrameNum++;
 	pEnc->mbParam.m_ticks += pEnc->mbParam.fincr;
 
+#ifdef BFRAMES
+	pEnc->mbParam.m_ticks = pEnc->mbParam.m_ticks % pEnc->mbParam.fbase;
+	if (pEnc->mbParam.m_ticks < pEnc->last_sync) 
+		pEnc->mbParam.m_seconds = 1;		// more than 1 second since last I or P is not supported. 
+	else
+		pEnc->mbParam.m_seconds = 0;
+
+	if (pEnc->current->coding_type != B_VOP)
+		pEnc->last_sync = pEnc->mbParam.m_ticks;
+#else
+
 	pEnc->mbParam.m_seconds = pEnc->mbParam.m_ticks / pEnc->mbParam.fbase;
 	pEnc->mbParam.m_ticks = pEnc->mbParam.m_ticks % pEnc->mbParam.fbase;
-}
+	
 #endif
 
+}
+
 
 #ifdef BFRAMES
 void queue_image(Encoder * pEnc, XVID_ENC_FRAME * pFrame)
@@ -826,7 +838,7 @@
 
 		pFrame->intra = 0;
 
-		BitstreamPutBits(&bs, 0x7f, 8);
+		BitstreamWriteVopHeader(&bs, &pEnc->mbParam, pEnc->current, 0); // write N_VOP
 		BitstreamPad(&bs);
 		pFrame->length = BitstreamLength(&bs);
 		
@@ -1044,6 +1056,8 @@
 		goto bvop_loop;
 	}
 
+	pEnc->iFrameNum++;
+
 	BitstreamPad(&bs);
 	pFrame->length = BitstreamLength(&bs);
 
@@ -1118,10 +1132,8 @@
 
 	pEnc->current->global_flags = pFrame->general;
 	pEnc->current->motion_flags = pFrame->motion;
-#ifdef BFRAMES
 	pEnc->current->seconds = pEnc->mbParam.m_seconds;
 	pEnc->current->ticks = pEnc->mbParam.m_ticks;
-#endif
 	pEnc->mbParam.hint = &pFrame->hint;
 
 	start_timer();
@@ -1251,12 +1263,8 @@
 	DEBUG(temp);
 #endif
 
-#ifdef BFRAMES
 	inc_frame_num(pEnc);
-#else
 	pEnc->iFrameNum++;
-#endif
-
 
 	stop_global_timer();
 	write_timer();
@@ -1536,6 +1544,11 @@
 			stop_prediction_timer();
 
 			start_timer();
+			if (pEnc->current->global_flags & XVID_GREYSCALE)
+			{	pMB->cbp &= 0x3C;		/* keep only bits 5-2 */
+				qcoeff[4*64+0]=0;		/* zero, because for INTRA MBs DC value is saved */
+				qcoeff[5*64+0]=0;
+			}
 			MBCoding(pEnc->current, pMB, qcoeff, bs, &pEnc->sStat);
 			stop_coding_timer();
 		}
@@ -1572,8 +1585,7 @@
 	DECLARE_ALIGNED_MATRIX(qcoeff, 6, 64, int16_t, CACHE_LINE);
 
 	int iLimit;
-	int k;
-	int x, y;
+	int x, y, k;
 	int iSearchRange;
 	int bIntra;
 	
@@ -1725,19 +1737,28 @@
 				}
 				if (!bSkip) 
 				{	
+					if (pEnc->current->global_flags & XVID_GREYSCALE)
+					{	pMB->cbp &= 0x3C;		/* keep only bits 5-2 */
+						qcoeff[4*64+0]=0;		/* zero, because DC for INTRA MBs DC value is saved */
+						qcoeff[5*64+0]=0;
+					}
 					MBCoding(pEnc->current, pMB, qcoeff, bs, &pEnc->sStat);
 					pMB->cbp = 0x80;		/* trick! so cbp!=0, but still nothing is written to bs */
 				}
 				else 
 					MBSkip(bs);
-				
 
 #else
 					MBSkip(bs);	/* without B-frames, no precautions are needed */
 
-#endif			
+#endif
 
 			} else {
+				if (pEnc->current->global_flags & XVID_GREYSCALE)
+				{	pMB->cbp &= 0x3C;		/* keep only bits 5-2 */
+					qcoeff[4*64+0]=0;		/* zero, because DC for INTRA MBs DC value is saved */
+					qcoeff[5*64+0]=0;
+				}
 				MBCoding(pEnc->current, pMB, qcoeff, bs, &pEnc->sStat);
 			}
 
@@ -1777,7 +1798,7 @@
 #ifdef BFRAMES
 	/* frame drop code */
 	// DPRINTF(DPRINTF_DEBUG, "kmu %i %i %i", pEnc->sStat.kblks, pEnc->sStat.mblks, pEnc->sStat.ublks);
-	if (pEnc->sStat.kblks + pEnc->sStat.mblks <=
+	if (pEnc->sStat.kblks + pEnc->sStat.mblks <
 		(pEnc->frame_drop_ratio * pEnc->mbParam.mb_width * pEnc->mbParam.mb_height) / 100)
 	{
 		pEnc->sStat.kblks = pEnc->sStat.mblks = 0;
@@ -1923,8 +1944,7 @@
 
 			mb->quant = frame->quant;
 			mb->cbp =
-				MBTransQuantInter(&pEnc->mbParam, frame, mb, x, y, dct_codes,
-								  qcoeff);
+				MBTransQuantInterBVOP(&pEnc->mbParam, frame, mb, dct_codes, qcoeff);
 			//mb->cbp = MBTransQuantBVOP(&pEnc->mbParam, x, y, dct_codes, qcoeff, &frame->image, frame->quant);
 
 			if ( (mb->mode == MODE_DIRECT) && (mb->cbp == 0)