--- decoder.h	2002/03/08 02:44:29	1.1
+++ decoder.h	2002/05/09 00:15:51	1.5
@@ -18,6 +18,10 @@
 	uint32_t quant_type;
 	uint32_t quarterpel;
 
+	uint32_t interlacing;
+	uint32_t top_field_first;
+	uint32_t alternate_vertical_scan;
+
 	// image
 
 	uint32_t width;
@@ -26,7 +30,9 @@
 	uint32_t edged_height;
 	
 	IMAGE cur;
-	IMAGE refn;
+	IMAGE refn[3];	// 0   -- last I or P VOP
+					// 1   -- first I or P
+					// 2   -- for interpolate mode B-frame
 	IMAGE refh;
 	IMAGE refv;
 	IMAGE refhv;
@@ -37,7 +43,18 @@
 	uint32_t mb_height;
 	MACROBLOCK * mbs;
 
-	
+	// for B-frame
+	int32_t		frames;			// total frame number
+	int8_t		scalability;
+	VECTOR		p_fmv, p_bmv;	// pred forward & backward motion vector
+	MACROBLOCK	*last_mbs;		// last MB
+	int64_t		time;			// for record time
+	int64_t		time_base;
+	int64_t		last_time_base;
+	int64_t		last_non_b_time;
+	uint32_t	time_pp;
+	uint32_t	time_bp;
+	uint8_t		low_delay;		// low_delay flage (1 means no B_VOP)
 } DECODER;
 
 void init_decoder(uint32_t cpu_flags);