--- bitstream.h	2004/12/05 13:56:13	1.20
+++ bitstream.h	2006/04/14 07:24:47	1.23
@@ -19,7 +19,7 @@
  *  along with this program ; if not, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  *
- * $Id: bitstream.h,v 1.20 2004/12/05 13:56:13 syskin Exp $
+ * $Id: bitstream.h,v 1.23 2006/04/14 07:24:47 Skal Exp $
  *
  ****************************************************************************/
 
@@ -146,8 +146,21 @@
 							 unsigned int quant);
 
 void BitstreamWriteUserData(Bitstream * const bs,
-							uint8_t * data,
-							const int length);
+							const char *data,
+							const unsigned int length);
+
+void
+BitstreamWriteEndOfSequence(Bitstream * const bs);
+
+void
+BitstreamWriteGroupOfVopHeader(Bitstream * const bs,
+                               const MBParam * pParam,
+                               uint32_t is_closed_gov);
+
+void write_video_packet_header(Bitstream * const bs,
+                               const MBParam * pParam,
+                               const FRAMEINFO * const frame,
+                               int mbnum);
 
 /* initialise bitstream structure */
 
@@ -180,8 +193,12 @@
 #endif
 	bs->bufb = tmp;
 
-	bs->buf = 0;
 	bs->pos = bs->initpos = bitpos*8;
+	/* preserve the intervening bytes */
+	if (bs->initpos > 0)
+		bs->buf = bs->bufa & (0xffffffff << (32 - bs->initpos));
+	else
+		bs->buf = 0;
 	bs->length = length;
 }
 
@@ -207,7 +224,11 @@
 #endif
 	bs->bufb = tmp;
 
-	bs->buf = 0;
+	/* preserve the intervening bytes */
+	if (bs->initpos > 0)
+		bs->buf = bs->bufa & (0xffffffff << (32 - bs->initpos));
+	else
+		bs->buf = 0;
 	bs->pos = bs->initpos;
 }