Split MPEG-1/2 decoder code off from MPEG-1/2 common code

libavcodec/Makefile

@@ -157,8 +157,8 @@ OBJS-$(CONFIG_EAMAD_DECODER)           += eamad.o eaidct.o mpeg12.o \
                                           mpeg12data.o
 OBJS-$(CONFIG_EATGQ_DECODER)           += eatgq.o eaidct.o
 OBJS-$(CONFIG_EATGV_DECODER)           += eatgv.o
-OBJS-$(CONFIG_EATQI_DECODER)           += eatqi.o eaidct.o mpeg12.o \
-                                          mpeg12data.o
+OBJS-$(CONFIG_EATQI_DECODER)           += eatqi.o eaidct.o mpeg12dec.o  \
+                                          mpeg12.o mpeg12data.o
 OBJS-$(CONFIG_EIGHTBPS_DECODER)        += 8bps.o
 OBJS-$(CONFIG_EIGHTSVX_EXP_DECODER)    += 8svx.o
 OBJS-$(CONFIG_EIGHTSVX_FIB_DECODER)    += 8svx.o
@@ -240,9 +240,9 @@ OBJS-$(CONFIG_MP3ON4FLOAT_DECODER)     += mpegaudiodec_float.o mpeg4audio.o
 OBJS-$(CONFIG_MPC7_DECODER)            += mpc7.o mpc.o
 OBJS-$(CONFIG_MPC8_DECODER)            += mpc8.o mpc.o
 OBJS-$(CONFIG_MPEG_XVMC_DECODER)       += mpegvideo_xvmc.o
-OBJS-$(CONFIG_MPEG1VIDEO_DECODER)      += mpeg12.o mpeg12data.o
+OBJS-$(CONFIG_MPEG1VIDEO_DECODER)      += mpeg12dec.o mpeg12.o mpeg12data.o
 OBJS-$(CONFIG_MPEG1VIDEO_ENCODER)      += mpeg12enc.o mpeg12.o
-OBJS-$(CONFIG_MPEG2VIDEO_DECODER)      += mpeg12.o mpeg12data.o
+OBJS-$(CONFIG_MPEG2VIDEO_DECODER)      += mpeg12dec.o mpeg12.o mpeg12data.o
 OBJS-$(CONFIG_MPEG2VIDEO_ENCODER)      += mpeg12enc.o mpeg12.o
 OBJS-$(CONFIG_MSMPEG4V1_DECODER)       += msmpeg4.o msmpeg4data.o
 OBJS-$(CONFIG_MSMPEG4V2_DECODER)       += msmpeg4.o msmpeg4data.o h263dec.o \

libavcodec/mpeg12.h

@@ -25,10 +25,21 @@
 #include "mpegvideo.h"
 
 #define DC_VLC_BITS 9
+#define MV_VLC_BITS 9
 #define TEX_VLC_BITS 9
 
+#define MBINCR_VLC_BITS 9
+#define MB_PAT_VLC_BITS 9
+#define MB_PTYPE_VLC_BITS 6
+#define MB_BTYPE_VLC_BITS 6
+
 extern VLC ff_dc_lum_vlc;
 extern VLC ff_dc_chroma_vlc;
+extern VLC ff_mbincr_vlc;
+extern VLC ff_mb_ptype_vlc;
+extern VLC ff_mb_btype_vlc;
+extern VLC ff_mb_pat_vlc;
+extern VLC ff_mv_vlc;
 
 typedef struct Mpeg1Context {
     MpegEncContext mpeg_enc_ctx;