Split decoder-specific code off from vc1.c into vc1dec.c and keep code
authorDiego Biurrun <diego@biurrun.de>
Thu, 11 Jun 2009 09:31:31 +0000 (09:31 +0000)
committerDiego Biurrun <diego@biurrun.de>
Thu, 11 Jun 2009 09:31:31 +0000 (09:31 +0000)
shared between decoder and parser in vc1.c.

Originally committed as revision 19152 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile
libavcodec/vc1.c
libavcodec/vc1dec.c [new file with mode: 0644]

index e0d57cf..d2687d7 100644 (file)
@@ -236,9 +236,9 @@ OBJS-$(CONFIG_V210_DECODER)            += v210dec.o
 OBJS-$(CONFIG_V210_ENCODER)            += v210enc.o
 OBJS-$(CONFIG_V210X_DECODER)           += v210x.o
 OBJS-$(CONFIG_VB_DECODER)              += vb.o
-OBJS-$(CONFIG_VC1_DECODER)             += vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o
-OBJS-$(CONFIG_VC1_VAAPI_HWACCEL)       += vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o vaapi_vc1.o
-OBJS-$(CONFIG_VC1_VDPAU_DECODER)       += vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o
+OBJS-$(CONFIG_VC1_DECODER)             += vc1dec.o vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o
+OBJS-$(CONFIG_VC1_VAAPI_HWACCEL)       += vc1dec.o vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o vaapi_vc1.o
+OBJS-$(CONFIG_VC1_VDPAU_DECODER)       += vc1dec.o vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o
 OBJS-$(CONFIG_VCR1_DECODER)            += vcr1.o
 OBJS-$(CONFIG_VCR1_ENCODER)            += vcr1.o
 OBJS-$(CONFIG_VMDAUDIO_DECODER)        += vmdav.o
index 159ed9c..964e126 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * VC-1 and WMV3 decoder
+ * VC-1 and WMV3 decoder common code
  * Copyright (c) 2006-2007 Konstantin Shishkov
  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
  *
@@ -22,7 +22,7 @@
 
 /**
  * @file libavcodec/vc1.c
- * VC-1 and WMV3 decoder
+ * VC-1 and WMV3 decoder common code
  *
  */
 #include "internal.h"
 #include "mpegvideo.h"
 #include "vc1.h"
 #include "vc1data.h"
-#include "vc1acdata.h"
 #include "msmpeg4data.h"
 #include "unary.h"
 #include "simple_idct.h"
-#include "mathops.h"
-#include "vdpau_internal.h"
 
 #undef NDEBUG
 #include <assert.h>
 
-#define MB_INTRA_VLC_BITS 9
-#define DC_VLC_BITS 9
-#define AC_VLC_BITS 9
-static const uint16_t table_mb_intra[64][2];
-
-
-static const uint16_t vlc_offs[] = {
-       0,   520,   552,   616,  1128,  1160, 1224, 1740, 1772, 1836, 1900, 2436,
-    2986,  3050,  3610,  4154,  4218,  4746, 5326, 5390, 5902, 6554, 7658, 8620,
-    9262, 10202, 10756, 11310, 12228, 15078
-};
-
-/**
- * Init VC-1 specific tables and VC1Context members
- * @param v The VC1Context to initialize
- * @return Status
- */
-static int vc1_init_common(VC1Context *v)
-{
-    static int done = 0;
-    int i = 0;
-    static VLC_TYPE vlc_table[15078][2];
-
-    v->hrd_rate = v->hrd_buffer = NULL;
-
-    /* VLC tables */
-    if(!done)
-    {
-        INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
-                 ff_vc1_bfraction_bits, 1, 1,
-                 ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
-        INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
-                 ff_vc1_norm2_bits, 1, 1,
-                 ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
-        INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
-                 ff_vc1_norm6_bits, 1, 1,
-                 ff_vc1_norm6_codes, 2, 2, 556);
-        INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
-                 ff_vc1_imode_bits, 1, 1,
-                 ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
-        for (i=0; i<3; i++)
-        {
-            ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i*3+0]];
-            ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i*3+1] - vlc_offs[i*3+0];
-            init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
-                     ff_vc1_ttmb_bits[i], 1, 1,
-                     ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
-            ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i*3+1]];
-            ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i*3+2] - vlc_offs[i*3+1];
-            init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
-                     ff_vc1_ttblk_bits[i], 1, 1,
-                     ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
-            ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i*3+2]];
-            ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i*3+3] - vlc_offs[i*3+2];
-            init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
-                     ff_vc1_subblkpat_bits[i], 1, 1,
-                     ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
-        }
-        for(i=0; i<4; i++)
-        {
-            ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i*3+9]];
-            ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i*3+10] - vlc_offs[i*3+9];
-            init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
-                     ff_vc1_4mv_block_pattern_bits[i], 1, 1,
-                     ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
-            ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i*3+10]];
-            ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i*3+11] - vlc_offs[i*3+10];
-            init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
-                     ff_vc1_cbpcy_p_bits[i], 1, 1,
-                     ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
-            ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i*3+11]];
-            ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i*3+12] - vlc_offs[i*3+11];
-            init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
-                     ff_vc1_mv_diff_bits[i], 1, 1,
-                     ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
-        }
-        for(i=0; i<8; i++){
-            ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i+21]];
-            ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i+22] - vlc_offs[i+21];
-            init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
-                     &vc1_ac_tables[i][0][1], 8, 4,
-                     &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
-        }
-        //FIXME: switching to INIT_VLC_STATIC() results in incorrect decoding
-        init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
-                 &ff_msmp4_mb_i_table[0][1], 4, 2,
-                 &ff_msmp4_mb_i_table[0][0], 4, 2, INIT_VLC_USE_STATIC);
-        done = 1;
-    }
-
-    /* Other defaults */
-    v->pq = -1;
-    v->mvrange = 0; /* 7.1.1.18, p80 */
-
-    return 0;
-}
-
 /***********************************************************************/
 /**
  * @defgroup vc1bitplane VC-1 Bitplane decoding
@@ -333,22 +233,6 @@ static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
 
 /** @} */ //Bitplane group
 
-static void vc1_loop_filter_iblk(MpegEncContext *s, int pq)
-{
-    int i, j;
-    if(!s->first_slice_line)
-        s->dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq);
-    s->dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq);
-    for(i = !s->mb_x*8; i < 16; i += 8)
-        s->dsp.vc1_h_loop_filter16(s->dest[0] + i, s->linesize, pq);
-    for(j = 0; j < 2; j++){
-        if(!s->first_slice_line)
-            s->dsp.vc1_v_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
-        if(s->mb_x)
-            s->dsp.vc1_h_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
-    }
-}
-
 /***********************************************************************/
 /** VOP Dquant decoding
  * @param v VC-1 Context
@@ -394,408 +278,6 @@ static int vop_dquant_decoding(VC1Context *v)
     return 0;
 }
 
-/** Put block onto picture
- */
-static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
-{
-    uint8_t *Y;
-    int ys, us, vs;
-    DSPContext *dsp = &v->s.dsp;
-
-    if(v->rangeredfrm) {
-        int i, j, k;
-        for(k = 0; k < 6; k++)
-            for(j = 0; j < 8; j++)
-                for(i = 0; i < 8; i++)
-                    block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
-
-    }
-    ys = v->s.current_picture.linesize[0];
-    us = v->s.current_picture.linesize[1];
-    vs = v->s.current_picture.linesize[2];
-    Y = v->s.dest[0];
-
-    dsp->put_pixels_clamped(block[0], Y, ys);
-    dsp->put_pixels_clamped(block[1], Y + 8, ys);
-    Y += ys * 8;
-    dsp->put_pixels_clamped(block[2], Y, ys);
-    dsp->put_pixels_clamped(block[3], Y + 8, ys);
-
-    if(!(v->s.flags & CODEC_FLAG_GRAY)) {
-        dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
-        dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
-    }
-}
-
-/** Do motion compensation over 1 macroblock
- * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
- */
-static void vc1_mc_1mv(VC1Context *v, int dir)
-{
-    MpegEncContext *s = &v->s;
-    DSPContext *dsp = &v->s.dsp;
-    uint8_t *srcY, *srcU, *srcV;
-    int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
-
-    if(!v->s.last_picture.data[0])return;
-
-    mx = s->mv[dir][0][0];
-    my = s->mv[dir][0][1];
-
-    // store motion vectors for further use in B frames
-    if(s->pict_type == FF_P_TYPE) {
-        s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
-        s->current_picture.motion_val[1][s->block_index[0]][1] = my;
-    }
-    uvmx = (mx + ((mx & 3) == 3)) >> 1;
-    uvmy = (my + ((my & 3) == 3)) >> 1;
-    if(v->fastuvmc) {
-        uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
-        uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
-    }
-    if(!dir) {
-        srcY = s->last_picture.data[0];
-        srcU = s->last_picture.data[1];
-        srcV = s->last_picture.data[2];
-    } else {
-        srcY = s->next_picture.data[0];
-        srcU = s->next_picture.data[1];
-        srcV = s->next_picture.data[2];
-    }
-
-    src_x = s->mb_x * 16 + (mx >> 2);
-    src_y = s->mb_y * 16 + (my >> 2);
-    uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
-    uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
-
-    if(v->profile != PROFILE_ADVANCED){
-        src_x   = av_clip(  src_x, -16, s->mb_width  * 16);
-        src_y   = av_clip(  src_y, -16, s->mb_height * 16);
-        uvsrc_x = av_clip(uvsrc_x,  -8, s->mb_width  *  8);
-        uvsrc_y = av_clip(uvsrc_y,  -8, s->mb_height *  8);
-    }else{
-        src_x   = av_clip(  src_x, -17, s->avctx->coded_width);
-        src_y   = av_clip(  src_y, -18, s->avctx->coded_height + 1);
-        uvsrc_x = av_clip(uvsrc_x,  -8, s->avctx->coded_width  >> 1);
-        uvsrc_y = av_clip(uvsrc_y,  -8, s->avctx->coded_height >> 1);
-    }
-
-    srcY += src_y * s->linesize + src_x;
-    srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
-    srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
-
-    /* for grayscale we should not try to read from unknown area */
-    if(s->flags & CODEC_FLAG_GRAY) {
-        srcU = s->edge_emu_buffer + 18 * s->linesize;
-        srcV = s->edge_emu_buffer + 18 * s->linesize;
-    }
-
-    if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
-       || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
-       || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
-        uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
-
-        srcY -= s->mspel * (1 + s->linesize);
-        ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
-                            src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
-        srcY = s->edge_emu_buffer;
-        ff_emulated_edge_mc(uvbuf     , srcU, s->uvlinesize, 8+1, 8+1,
-                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
-                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        srcU = uvbuf;
-        srcV = uvbuf + 16;
-        /* if we deal with range reduction we need to scale source blocks */
-        if(v->rangeredfrm) {
-            int i, j;
-            uint8_t *src, *src2;
-
-            src = srcY;
-            for(j = 0; j < 17 + s->mspel*2; j++) {
-                for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
-                src += s->linesize;
-            }
-            src = srcU; src2 = srcV;
-            for(j = 0; j < 9; j++) {
-                for(i = 0; i < 9; i++) {
-                    src[i] = ((src[i] - 128) >> 1) + 128;
-                    src2[i] = ((src2[i] - 128) >> 1) + 128;
-                }
-                src += s->uvlinesize;
-                src2 += s->uvlinesize;
-            }
-        }
-        /* if we deal with intensity compensation we need to scale source blocks */
-        if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
-            int i, j;
-            uint8_t *src, *src2;
-
-            src = srcY;
-            for(j = 0; j < 17 + s->mspel*2; j++) {
-                for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
-                src += s->linesize;
-            }
-            src = srcU; src2 = srcV;
-            for(j = 0; j < 9; j++) {
-                for(i = 0; i < 9; i++) {
-                    src[i] = v->lutuv[src[i]];
-                    src2[i] = v->lutuv[src2[i]];
-                }
-                src += s->uvlinesize;
-                src2 += s->uvlinesize;
-            }
-        }
-        srcY += s->mspel * (1 + s->linesize);
-    }
-
-    if(s->mspel) {
-        dxy = ((my & 3) << 2) | (mx & 3);
-        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0]    , srcY    , s->linesize, v->rnd);
-        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
-        srcY += s->linesize * 8;
-        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize    , srcY    , s->linesize, v->rnd);
-        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
-    } else { // hpel mc - always used for luma
-        dxy = (my & 2) | ((mx & 2) >> 1);
-
-        if(!v->rnd)
-            dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
-        else
-            dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
-    }
-
-    if(s->flags & CODEC_FLAG_GRAY) return;
-    /* Chroma MC always uses qpel bilinear */
-    uvmx = (uvmx&3)<<1;
-    uvmy = (uvmy&3)<<1;
-    if(!v->rnd){
-        dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
-        dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
-    }else{
-        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
-        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
-    }
-}
-
-/** Do motion compensation for 4-MV macroblock - luminance block
- */
-static void vc1_mc_4mv_luma(VC1Context *v, int n)
-{
-    MpegEncContext *s = &v->s;
-    DSPContext *dsp = &v->s.dsp;
-    uint8_t *srcY;
-    int dxy, mx, my, src_x, src_y;
-    int off;
-
-    if(!v->s.last_picture.data[0])return;
-    mx = s->mv[0][n][0];
-    my = s->mv[0][n][1];
-    srcY = s->last_picture.data[0];
-
-    off = s->linesize * 4 * (n&2) + (n&1) * 8;
-
-    src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
-    src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
-
-    if(v->profile != PROFILE_ADVANCED){
-        src_x   = av_clip(  src_x, -16, s->mb_width  * 16);
-        src_y   = av_clip(  src_y, -16, s->mb_height * 16);
-    }else{
-        src_x   = av_clip(  src_x, -17, s->avctx->coded_width);
-        src_y   = av_clip(  src_y, -18, s->avctx->coded_height + 1);
-    }
-
-    srcY += src_y * s->linesize + src_x;
-
-    if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
-       || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
-       || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
-        srcY -= s->mspel * (1 + s->linesize);
-        ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
-                            src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
-        srcY = s->edge_emu_buffer;
-        /* if we deal with range reduction we need to scale source blocks */
-        if(v->rangeredfrm) {
-            int i, j;
-            uint8_t *src;
-
-            src = srcY;
-            for(j = 0; j < 9 + s->mspel*2; j++) {
-                for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
-                src += s->linesize;
-            }
-        }
-        /* if we deal with intensity compensation we need to scale source blocks */
-        if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
-            int i, j;
-            uint8_t *src;
-
-            src = srcY;
-            for(j = 0; j < 9 + s->mspel*2; j++) {
-                for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
-                src += s->linesize;
-            }
-        }
-        srcY += s->mspel * (1 + s->linesize);
-    }
-
-    if(s->mspel) {
-        dxy = ((my & 3) << 2) | (mx & 3);
-        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
-    } else { // hpel mc - always used for luma
-        dxy = (my & 2) | ((mx & 2) >> 1);
-        if(!v->rnd)
-            dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
-        else
-            dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
-    }
-}
-
-static inline int median4(int a, int b, int c, int d)
-{
-    if(a < b) {
-        if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
-        else      return (FFMIN(b, c) + FFMAX(a, d)) / 2;
-    } else {
-        if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
-        else      return (FFMIN(a, c) + FFMAX(b, d)) / 2;
-    }
-}
-
-
-/** Do motion compensation for 4-MV macroblock - both chroma blocks
- */
-static void vc1_mc_4mv_chroma(VC1Context *v)
-{
-    MpegEncContext *s = &v->s;
-    DSPContext *dsp = &v->s.dsp;
-    uint8_t *srcU, *srcV;
-    int uvmx, uvmy, uvsrc_x, uvsrc_y;
-    int i, idx, tx = 0, ty = 0;
-    int mvx[4], mvy[4], intra[4];
-    static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
-
-    if(!v->s.last_picture.data[0])return;
-    if(s->flags & CODEC_FLAG_GRAY) return;
-
-    for(i = 0; i < 4; i++) {
-        mvx[i] = s->mv[0][i][0];
-        mvy[i] = s->mv[0][i][1];
-        intra[i] = v->mb_type[0][s->block_index[i]];
-    }
-
-    /* calculate chroma MV vector from four luma MVs */
-    idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
-    if(!idx) { // all blocks are inter
-        tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
-        ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
-    } else if(count[idx] == 1) { // 3 inter blocks
-        switch(idx) {
-        case 0x1:
-            tx = mid_pred(mvx[1], mvx[2], mvx[3]);
-            ty = mid_pred(mvy[1], mvy[2], mvy[3]);
-            break;
-        case 0x2:
-            tx = mid_pred(mvx[0], mvx[2], mvx[3]);
-            ty = mid_pred(mvy[0], mvy[2], mvy[3]);
-            break;
-        case 0x4:
-            tx = mid_pred(mvx[0], mvx[1], mvx[3]);
-            ty = mid_pred(mvy[0], mvy[1], mvy[3]);
-            break;
-        case 0x8:
-            tx = mid_pred(mvx[0], mvx[1], mvx[2]);
-            ty = mid_pred(mvy[0], mvy[1], mvy[2]);
-            break;
-        }
-    } else if(count[idx] == 2) {
-        int t1 = 0, t2 = 0;
-        for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
-        for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
-        tx = (mvx[t1] + mvx[t2]) / 2;
-        ty = (mvy[t1] + mvy[t2]) / 2;
-    } else {
-        s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
-        s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
-        return; //no need to do MC for inter blocks
-    }
-
-    s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
-    s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
-    uvmx = (tx + ((tx&3) == 3)) >> 1;
-    uvmy = (ty + ((ty&3) == 3)) >> 1;
-    if(v->fastuvmc) {
-        uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
-        uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
-    }
-
-    uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
-    uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
-
-    if(v->profile != PROFILE_ADVANCED){
-        uvsrc_x = av_clip(uvsrc_x,  -8, s->mb_width  *  8);
-        uvsrc_y = av_clip(uvsrc_y,  -8, s->mb_height *  8);
-    }else{
-        uvsrc_x = av_clip(uvsrc_x,  -8, s->avctx->coded_width  >> 1);
-        uvsrc_y = av_clip(uvsrc_y,  -8, s->avctx->coded_height >> 1);
-    }
-
-    srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
-    srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
-    if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
-       || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
-       || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
-        ff_emulated_edge_mc(s->edge_emu_buffer     , srcU, s->uvlinesize, 8+1, 8+1,
-                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
-                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        srcU = s->edge_emu_buffer;
-        srcV = s->edge_emu_buffer + 16;
-
-        /* if we deal with range reduction we need to scale source blocks */
-        if(v->rangeredfrm) {
-            int i, j;
-            uint8_t *src, *src2;
-
-            src = srcU; src2 = srcV;
-            for(j = 0; j < 9; j++) {
-                for(i = 0; i < 9; i++) {
-                    src[i] = ((src[i] - 128) >> 1) + 128;
-                    src2[i] = ((src2[i] - 128) >> 1) + 128;
-                }
-                src += s->uvlinesize;
-                src2 += s->uvlinesize;
-            }
-        }
-        /* if we deal with intensity compensation we need to scale source blocks */
-        if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
-            int i, j;
-            uint8_t *src, *src2;
-
-            src = srcU; src2 = srcV;
-            for(j = 0; j < 9; j++) {
-                for(i = 0; i < 9; i++) {
-                    src[i] = v->lutuv[src[i]];
-                    src2[i] = v->lutuv[src2[i]];
-                }
-                src += s->uvlinesize;
-                src2 += s->uvlinesize;
-            }
-        }
-    }
-
-    /* Chroma MC always uses qpel bilinear */
-    uvmx = (uvmx&3)<<1;
-    uvmy = (uvmy&3)<<1;
-    if(!v->rnd){
-        dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
-        dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
-    }else{
-        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
-        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
-    }
-}
-
 static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb);
 
 /**
@@ -1541,2788 +1023,3 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
     }
     return 0;
 }
-
-/***********************************************************************/
-/**
- * @defgroup vc1block VC-1 Block-level functions
- * @see 7.1.4, p91 and 8.1.1.7, p(1)04
- * @{
- */
-
-/**
- * @def GET_MQUANT
- * @brief Get macroblock-level quantizer scale
- */
-#define GET_MQUANT()                                           \
-  if (v->dquantfrm)                                            \
-  {                                                            \
-    int edges = 0;                                             \
-    if (v->dqprofile == DQPROFILE_ALL_MBS)                     \
-    {                                                          \
-      if (v->dqbilevel)                                        \
-      {                                                        \
-        mquant = (get_bits1(gb)) ? v->altpq : v->pq;           \
-      }                                                        \
-      else                                                     \
-      {                                                        \
-        mqdiff = get_bits(gb, 3);                              \
-        if (mqdiff != 7) mquant = v->pq + mqdiff;              \
-        else mquant = get_bits(gb, 5);                         \
-      }                                                        \
-    }                                                          \
-    if(v->dqprofile == DQPROFILE_SINGLE_EDGE)                  \
-        edges = 1 << v->dqsbedge;                              \
-    else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES)            \
-        edges = (3 << v->dqsbedge) % 15;                       \
-    else if(v->dqprofile == DQPROFILE_FOUR_EDGES)              \
-        edges = 15;                                            \
-    if((edges&1) && !s->mb_x)                                  \
-        mquant = v->altpq;                                     \
-    if((edges&2) && s->first_slice_line)                       \
-        mquant = v->altpq;                                     \
-    if((edges&4) && s->mb_x == (s->mb_width - 1))              \
-        mquant = v->altpq;                                     \
-    if((edges&8) && s->mb_y == (s->mb_height - 1))             \
-        mquant = v->altpq;                                     \
-  }
-
-/**
- * @def GET_MVDATA(_dmv_x, _dmv_y)
- * @brief Get MV differentials
- * @see MVDATA decoding from 8.3.5.2, p(1)20
- * @param _dmv_x Horizontal differential for decoded MV
- * @param _dmv_y Vertical differential for decoded MV
- */
-#define GET_MVDATA(_dmv_x, _dmv_y)                                  \
-  index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
-                       VC1_MV_DIFF_VLC_BITS, 2);                    \
-  if (index > 36)                                                   \
-  {                                                                 \
-    mb_has_coeffs = 1;                                              \
-    index -= 37;                                                    \
-  }                                                                 \
-  else mb_has_coeffs = 0;                                           \
-  s->mb_intra = 0;                                                  \
-  if (!index) { _dmv_x = _dmv_y = 0; }                              \
-  else if (index == 35)                                             \
-  {                                                                 \
-    _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample);          \
-    _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample);          \
-  }                                                                 \
-  else if (index == 36)                                             \
-  {                                                                 \
-    _dmv_x = 0;                                                     \
-    _dmv_y = 0;                                                     \
-    s->mb_intra = 1;                                                \
-  }                                                                 \
-  else                                                              \
-  {                                                                 \
-    index1 = index%6;                                               \
-    if (!s->quarter_sample && index1 == 5) val = 1;                 \
-    else                                   val = 0;                 \
-    if(size_table[index1] - val > 0)                                \
-        val = get_bits(gb, size_table[index1] - val);               \
-    else                                   val = 0;                 \
-    sign = 0 - (val&1);                                             \
-    _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign;     \
-                                                                    \
-    index1 = index/6;                                               \
-    if (!s->quarter_sample && index1 == 5) val = 1;                 \
-    else                                   val = 0;                 \
-    if(size_table[index1] - val > 0)                                \
-        val = get_bits(gb, size_table[index1] - val);               \
-    else                                   val = 0;                 \
-    sign = 0 - (val&1);                                             \
-    _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign;     \
-  }
-
-/** Predict and set motion vector
- */
-static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, int mv1, int r_x, int r_y, uint8_t* is_intra)
-{
-    int xy, wrap, off = 0;
-    int16_t *A, *B, *C;
-    int px, py;
-    int sum;
-
-    /* scale MV difference to be quad-pel */
-    dmv_x <<= 1 - s->quarter_sample;
-    dmv_y <<= 1 - s->quarter_sample;
-
-    wrap = s->b8_stride;
-    xy = s->block_index[n];
-
-    if(s->mb_intra){
-        s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
-        s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
-        s->current_picture.motion_val[1][xy][0] = 0;
-        s->current_picture.motion_val[1][xy][1] = 0;
-        if(mv1) { /* duplicate motion data for 1-MV block */
-            s->current_picture.motion_val[0][xy + 1][0] = 0;
-            s->current_picture.motion_val[0][xy + 1][1] = 0;
-            s->current_picture.motion_val[0][xy + wrap][0] = 0;
-            s->current_picture.motion_val[0][xy + wrap][1] = 0;
-            s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
-            s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
-            s->current_picture.motion_val[1][xy + 1][0] = 0;
-            s->current_picture.motion_val[1][xy + 1][1] = 0;
-            s->current_picture.motion_val[1][xy + wrap][0] = 0;
-            s->current_picture.motion_val[1][xy + wrap][1] = 0;
-            s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
-            s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
-        }
-        return;
-    }
-
-    C = s->current_picture.motion_val[0][xy - 1];
-    A = s->current_picture.motion_val[0][xy - wrap];
-    if(mv1)
-        off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
-    else {
-        //in 4-MV mode different blocks have different B predictor position
-        switch(n){
-        case 0:
-            off = (s->mb_x > 0) ? -1 : 1;
-            break;
-        case 1:
-            off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
-            break;
-        case 2:
-            off = 1;
-            break;
-        case 3:
-            off = -1;
-        }
-    }
-    B = s->current_picture.motion_val[0][xy - wrap + off];
-
-    if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
-        if(s->mb_width == 1) {
-            px = A[0];
-            py = A[1];
-        } else {
-            px = mid_pred(A[0], B[0], C[0]);
-            py = mid_pred(A[1], B[1], C[1]);
-        }
-    } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
-        px = C[0];
-        py = C[1];
-    } else {
-        px = py = 0;
-    }
-    /* Pullback MV as specified in 8.3.5.3.4 */
-    {
-        int qx, qy, X, Y;
-        qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
-        qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
-        X = (s->mb_width << 6) - 4;
-        Y = (s->mb_height << 6) - 4;
-        if(mv1) {
-            if(qx + px < -60) px = -60 - qx;
-            if(qy + py < -60) py = -60 - qy;
-        } else {
-            if(qx + px < -28) px = -28 - qx;
-            if(qy + py < -28) py = -28 - qy;
-        }
-        if(qx + px > X) px = X - qx;
-        if(qy + py > Y) py = Y - qy;
-    }
-    /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
-    if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
-        if(is_intra[xy - wrap])
-            sum = FFABS(px) + FFABS(py);
-        else
-            sum = FFABS(px - A[0]) + FFABS(py - A[1]);
-        if(sum > 32) {
-            if(get_bits1(&s->gb)) {
-                px = A[0];
-                py = A[1];
-            } else {
-                px = C[0];
-                py = C[1];
-            }
-        } else {
-            if(is_intra[xy - 1])
-                sum = FFABS(px) + FFABS(py);
-            else
-                sum = FFABS(px - C[0]) + FFABS(py - C[1]);
-            if(sum > 32) {
-                if(get_bits1(&s->gb)) {
-                    px = A[0];
-                    py = A[1];
-                } else {
-                    px = C[0];
-                    py = C[1];
-                }
-            }
-        }
-    }
-    /* store MV using signed modulus of MV range defined in 4.11 */
-    s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
-    s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
-    if(mv1) { /* duplicate motion data for 1-MV block */
-        s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
-        s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
-        s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
-        s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
-        s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
-        s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
-    }
-}
-
-/** Motion compensation for direct or interpolated blocks in B-frames
- */
-static void vc1_interp_mc(VC1Context *v)
-{
-    MpegEncContext *s = &v->s;
-    DSPContext *dsp = &v->s.dsp;
-    uint8_t *srcY, *srcU, *srcV;
-    int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
-
-    if(!v->s.next_picture.data[0])return;
-
-    mx = s->mv[1][0][0];
-    my = s->mv[1][0][1];
-    uvmx = (mx + ((mx & 3) == 3)) >> 1;
-    uvmy = (my + ((my & 3) == 3)) >> 1;
-    if(v->fastuvmc) {
-        uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
-        uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
-    }
-    srcY = s->next_picture.data[0];
-    srcU = s->next_picture.data[1];
-    srcV = s->next_picture.data[2];
-
-    src_x = s->mb_x * 16 + (mx >> 2);
-    src_y = s->mb_y * 16 + (my >> 2);
-    uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
-    uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
-
-    if(v->profile != PROFILE_ADVANCED){
-        src_x   = av_clip(  src_x, -16, s->mb_width  * 16);
-        src_y   = av_clip(  src_y, -16, s->mb_height * 16);
-        uvsrc_x = av_clip(uvsrc_x,  -8, s->mb_width  *  8);
-        uvsrc_y = av_clip(uvsrc_y,  -8, s->mb_height *  8);
-    }else{
-        src_x   = av_clip(  src_x, -17, s->avctx->coded_width);
-        src_y   = av_clip(  src_y, -18, s->avctx->coded_height + 1);
-        uvsrc_x = av_clip(uvsrc_x,  -8, s->avctx->coded_width  >> 1);
-        uvsrc_y = av_clip(uvsrc_y,  -8, s->avctx->coded_height >> 1);
-    }
-
-    srcY += src_y * s->linesize + src_x;
-    srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
-    srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
-
-    /* for grayscale we should not try to read from unknown area */
-    if(s->flags & CODEC_FLAG_GRAY) {
-        srcU = s->edge_emu_buffer + 18 * s->linesize;
-        srcV = s->edge_emu_buffer + 18 * s->linesize;
-    }
-
-    if(v->rangeredfrm
-       || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
-       || (unsigned)src_y > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
-        uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
-
-        srcY -= s->mspel * (1 + s->linesize);
-        ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
-                            src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
-        srcY = s->edge_emu_buffer;
-        ff_emulated_edge_mc(uvbuf     , srcU, s->uvlinesize, 8+1, 8+1,
-                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
-                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
-        srcU = uvbuf;
-        srcV = uvbuf + 16;
-        /* if we deal with range reduction we need to scale source blocks */
-        if(v->rangeredfrm) {
-            int i, j;
-            uint8_t *src, *src2;
-
-            src = srcY;
-            for(j = 0; j < 17 + s->mspel*2; j++) {
-                for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
-                src += s->linesize;
-            }
-            src = srcU; src2 = srcV;
-            for(j = 0; j < 9; j++) {
-                for(i = 0; i < 9; i++) {
-                    src[i] = ((src[i] - 128) >> 1) + 128;
-                    src2[i] = ((src2[i] - 128) >> 1) + 128;
-                }
-                src += s->uvlinesize;
-                src2 += s->uvlinesize;
-            }
-        }
-        srcY += s->mspel * (1 + s->linesize);
-    }
-
-    if(s->mspel) {
-        dxy = ((my & 3) << 2) | (mx & 3);
-        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0]    , srcY    , s->linesize, v->rnd);
-        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
-        srcY += s->linesize * 8;
-        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize    , srcY    , s->linesize, v->rnd);
-        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
-    } else { // hpel mc
-        dxy = (my & 2) | ((mx & 2) >> 1);
-
-        if(!v->rnd)
-            dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
-        else
-            dsp->avg_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
-    }
-
-    if(s->flags & CODEC_FLAG_GRAY) return;
-    /* Chroma MC always uses qpel blilinear */
-    uvmx = (uvmx&3)<<1;
-    uvmy = (uvmy&3)<<1;
-    if(!v->rnd){
-        dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
-        dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
-    }else{
-        dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
-        dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
-    }
-}
-
-static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
-{
-    int n = bfrac;
-
-#if B_FRACTION_DEN==256
-    if(inv)
-        n -= 256;
-    if(!qs)
-        return 2 * ((value * n + 255) >> 9);
-    return (value * n + 128) >> 8;
-#else
-    if(inv)
-        n -= B_FRACTION_DEN;
-    if(!qs)
-        return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
-    return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
-#endif
-}
-
-/** Reconstruct motion vector for B-frame and do motion compensation
- */
-static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
-{
-    if(v->use_ic) {
-        v->mv_mode2 = v->mv_mode;
-        v->mv_mode = MV_PMODE_INTENSITY_COMP;
-    }
-    if(direct) {
-        vc1_mc_1mv(v, 0);
-        vc1_interp_mc(v);
-        if(v->use_ic) v->mv_mode = v->mv_mode2;
-        return;
-    }
-    if(mode == BMV_TYPE_INTERPOLATED) {
-        vc1_mc_1mv(v, 0);
-        vc1_interp_mc(v);
-        if(v->use_ic) v->mv_mode = v->mv_mode2;
-        return;
-    }
-
-    if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
-    vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
-    if(v->use_ic) v->mv_mode = v->mv_mode2;
-}
-
-static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
-{
-    MpegEncContext *s = &v->s;
-    int xy, wrap, off = 0;
-    int16_t *A, *B, *C;
-    int px, py;
-    int sum;
-    int r_x, r_y;
-    const uint8_t *is_intra = v->mb_type[0];
-
-    r_x = v->range_x;
-    r_y = v->range_y;
-    /* scale MV difference to be quad-pel */
-    dmv_x[0] <<= 1 - s->quarter_sample;
-    dmv_y[0] <<= 1 - s->quarter_sample;
-    dmv_x[1] <<= 1 - s->quarter_sample;
-    dmv_y[1] <<= 1 - s->quarter_sample;
-
-    wrap = s->b8_stride;
-    xy = s->block_index[0];
-
-    if(s->mb_intra) {
-        s->current_picture.motion_val[0][xy][0] =
-        s->current_picture.motion_val[0][xy][1] =
-        s->current_picture.motion_val[1][xy][0] =
-        s->current_picture.motion_val[1][xy][1] = 0;
-        return;
-    }
-    s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
-    s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
-    s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
-    s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
-
-    /* Pullback predicted motion vectors as specified in 8.4.5.4 */
-    s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width  << 6) - 4 - (s->mb_x << 6));
-    s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
-    s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width  << 6) - 4 - (s->mb_x << 6));
-    s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
-    if(direct) {
-        s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
-        s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
-        s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
-        s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
-        return;
-    }
-
-    if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
-        C = s->current_picture.motion_val[0][xy - 2];
-        A = s->current_picture.motion_val[0][xy - wrap*2];
-        off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
-        B = s->current_picture.motion_val[0][xy - wrap*2 + off];
-
-        if(!s->mb_x) C[0] = C[1] = 0;
-        if(!s->first_slice_line) { // predictor A is not out of bounds
-            if(s->mb_width == 1) {
-                px = A[0];
-                py = A[1];
-            } else {
-                px = mid_pred(A[0], B[0], C[0]);
-                py = mid_pred(A[1], B[1], C[1]);
-            }
-        } else if(s->mb_x) { // predictor C is not out of bounds
-            px = C[0];
-            py = C[1];
-        } else {
-            px = py = 0;
-        }
-        /* Pullback MV as specified in 8.3.5.3.4 */
-        {
-            int qx, qy, X, Y;
-            if(v->profile < PROFILE_ADVANCED) {
-                qx = (s->mb_x << 5);
-                qy = (s->mb_y << 5);
-                X = (s->mb_width << 5) - 4;
-                Y = (s->mb_height << 5) - 4;
-                if(qx + px < -28) px = -28 - qx;
-                if(qy + py < -28) py = -28 - qy;
-                if(qx + px > X) px = X - qx;
-                if(qy + py > Y) py = Y - qy;
-            } else {
-                qx = (s->mb_x << 6);
-                qy = (s->mb_y << 6);
-                X = (s->mb_width << 6) - 4;
-                Y = (s->mb_height << 6) - 4;
-                if(qx + px < -60) px = -60 - qx;
-                if(qy + py < -60) py = -60 - qy;
-                if(qx + px > X) px = X - qx;
-                if(qy + py > Y) py = Y - qy;
-            }
-        }
-        /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
-        if(0 && !s->first_slice_line && s->mb_x) {
-            if(is_intra[xy - wrap])
-                sum = FFABS(px) + FFABS(py);
-            else
-                sum = FFABS(px - A[0]) + FFABS(py - A[1]);
-            if(sum > 32) {
-                if(get_bits1(&s->gb)) {
-                    px = A[0];
-                    py = A[1];
-                } else {
-                    px = C[0];
-                    py = C[1];
-                }
-            } else {
-                if(is_intra[xy - 2])
-                    sum = FFABS(px) + FFABS(py);
-                else
-                    sum = FFABS(px - C[0]) + FFABS(py - C[1]);
-                if(sum > 32) {
-                    if(get_bits1(&s->gb)) {
-                        px = A[0];
-                        py = A[1];
-                    } else {
-                        px = C[0];
-                        py = C[1];
-                    }
-                }
-            }
-        }
-        /* store MV using signed modulus of MV range defined in 4.11 */
-        s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
-        s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
-    }
-    if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
-        C = s->current_picture.motion_val[1][xy - 2];
-        A = s->current_picture.motion_val[1][xy - wrap*2];
-        off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
-        B = s->current_picture.motion_val[1][xy - wrap*2 + off];
-
-        if(!s->mb_x) C[0] = C[1] = 0;
-        if(!s->first_slice_line) { // predictor A is not out of bounds
-            if(s->mb_width == 1) {
-                px = A[0];
-                py = A[1];
-            } else {
-                px = mid_pred(A[0], B[0], C[0]);
-                py = mid_pred(A[1], B[1], C[1]);
-            }
-        } else if(s->mb_x) { // predictor C is not out of bounds
-            px = C[0];
-            py = C[1];
-        } else {
-            px = py = 0;
-        }
-        /* Pullback MV as specified in 8.3.5.3.4 */
-        {
-            int qx, qy, X, Y;
-            if(v->profile < PROFILE_ADVANCED) {
-                qx = (s->mb_x << 5);
-                qy = (s->mb_y << 5);
-                X = (s->mb_width << 5) - 4;
-                Y = (s->mb_height << 5) - 4;
-                if(qx + px < -28) px = -28 - qx;
-                if(qy + py < -28) py = -28 - qy;
-                if(qx + px > X) px = X - qx;
-                if(qy + py > Y) py = Y - qy;
-            } else {
-                qx = (s->mb_x << 6);
-                qy = (s->mb_y << 6);
-                X = (s->mb_width << 6) - 4;
-                Y = (s->mb_height << 6) - 4;
-                if(qx + px < -60) px = -60 - qx;
-                if(qy + py < -60) py = -60 - qy;
-                if(qx + px > X) px = X - qx;
-                if(qy + py > Y) py = Y - qy;
-            }
-        }
-        /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
-        if(0 && !s->first_slice_line && s->mb_x) {
-            if(is_intra[xy - wrap])
-                sum = FFABS(px) + FFABS(py);
-            else
-                sum = FFABS(px - A[0]) + FFABS(py - A[1]);
-            if(sum > 32) {
-                if(get_bits1(&s->gb)) {
-                    px = A[0];
-                    py = A[1];
-                } else {
-                    px = C[0];
-                    py = C[1];
-                }
-            } else {
-                if(is_intra[xy - 2])
-                    sum = FFABS(px) + FFABS(py);
-                else
-                    sum = FFABS(px - C[0]) + FFABS(py - C[1]);
-                if(sum > 32) {
-                    if(get_bits1(&s->gb)) {
-                        px = A[0];
-                        py = A[1];
-                    } else {
-                        px = C[0];
-                        py = C[1];
-                    }
-                }
-            }
-        }
-        /* store MV using signed modulus of MV range defined in 4.11 */
-
-        s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
-        s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
-    }
-    s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
-    s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
-    s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
-    s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
-}
-
-/** Get predicted DC value for I-frames only
- * prediction dir: left=0, top=1
- * @param s MpegEncContext
- * @param overlap flag indicating that overlap filtering is used
- * @param pq integer part of picture quantizer
- * @param[in] n block index in the current MB
- * @param dc_val_ptr Pointer to DC predictor
- * @param dir_ptr Prediction direction for use in AC prediction
- */
-static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
-                              int16_t **dc_val_ptr, int *dir_ptr)
-{
-    int a, b, c, wrap, pred, scale;
-    int16_t *dc_val;
-    static const uint16_t dcpred[32] = {
-    -1, 1024,  512,  341,  256,  205,  171,  146,  128,
-         114,  102,   93,   85,   79,   73,   68,   64,
-          60,   57,   54,   51,   49,   47,   45,   43,
-          41,   39,   38,   37,   35,   34,   33
-    };
-
-    /* find prediction - wmv3_dc_scale always used here in fact */
-    if (n < 4)     scale = s->y_dc_scale;
-    else           scale = s->c_dc_scale;
-
-    wrap = s->block_wrap[n];
-    dc_val= s->dc_val[0] + s->block_index[n];
-
-    /* B A
-     * C X
-     */
-    c = dc_val[ - 1];
-    b = dc_val[ - 1 - wrap];
-    a = dc_val[ - wrap];
-
-    if (pq < 9 || !overlap)
-    {
-        /* Set outer values */
-        if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
-        if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
-    }
-    else
-    {
-        /* Set outer values */
-        if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
-        if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
-    }
-
-    if (abs(a - b) <= abs(b - c)) {
-        pred = c;
-        *dir_ptr = 1;//left
-    } else {
-        pred = a;
-        *dir_ptr = 0;//top
-    }
-
-    /* update predictor */
-    *dc_val_ptr = &dc_val[0];
-    return pred;
-}
-
-
-/** Get predicted DC value
- * prediction dir: left=0, top=1
- * @param s MpegEncContext
- * @param overlap flag indicating that overlap filtering is used
- * @param pq integer part of picture quantizer
- * @param[in] n block index in the current MB
- * @param a_avail flag indicating top block availability
- * @param c_avail flag indicating left block availability
- * @param dc_val_ptr Pointer to DC predictor
- * @param dir_ptr Prediction direction for use in AC prediction
- */
-static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
-                              int a_avail, int c_avail,
-                              int16_t **dc_val_ptr, int *dir_ptr)
-{
-    int a, b, c, wrap, pred;
-    int16_t *dc_val;
-    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-    int q1, q2 = 0;
-
-    wrap = s->block_wrap[n];
-    dc_val= s->dc_val[0] + s->block_index[n];
-
-    /* B A
-     * C X
-     */
-    c = dc_val[ - 1];
-    b = dc_val[ - 1 - wrap];
-    a = dc_val[ - wrap];
-    /* scale predictors if needed */
-    q1 = s->current_picture.qscale_table[mb_pos];
-    if(c_avail && (n!= 1 && n!=3)) {
-        q2 = s->current_picture.qscale_table[mb_pos - 1];
-        if(q2 && q2 != q1)
-            c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
-    }
-    if(a_avail && (n!= 2 && n!=3)) {
-        q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
-        if(q2 && q2 != q1)
-            a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
-    }
-    if(a_avail && c_avail && (n!=3)) {
-        int off = mb_pos;
-        if(n != 1) off--;
-        if(n != 2) off -= s->mb_stride;
-        q2 = s->current_picture.qscale_table[off];
-        if(q2 && q2 != q1)
-            b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
-    }
-
-    if(a_avail && c_avail) {
-        if(abs(a - b) <= abs(b - c)) {
-            pred = c;
-            *dir_ptr = 1;//left
-        } else {
-            pred = a;
-            *dir_ptr = 0;//top
-        }
-    } else if(a_avail) {
-        pred = a;
-        *dir_ptr = 0;//top
-    } else if(c_avail) {
-        pred = c;
-        *dir_ptr = 1;//left
-    } else {
-        pred = 0;
-        *dir_ptr = 1;//left
-    }
-
-    /* update predictor */
-    *dc_val_ptr = &dc_val[0];
-    return pred;
-}
-
-/** @} */ // Block group
-
-/**
- * @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles
- * @see 7.1.4, p91 and 8.1.1.7, p(1)04
- * @{
- */
-
-static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
-{
-    int xy, wrap, pred, a, b, c;
-
-    xy = s->block_index[n];
-    wrap = s->b8_stride;
-
-    /* B C
-     * A X
-     */
-    a = s->coded_block[xy - 1       ];
-    b = s->coded_block[xy - 1 - wrap];
-    c = s->coded_block[xy     - wrap];
-
-    if (b == c) {
-        pred = a;
-    } else {
-        pred = c;
-    }
-
-    /* store value */
-    *coded_block_ptr = &s->coded_block[xy];
-
-    return pred;
-}
-
-/**
- * Decode one AC coefficient
- * @param v The VC1 context
- * @param last Last coefficient
- * @param skip How much zero coefficients to skip
- * @param value Decoded AC coefficient value
- * @param codingset set of VLC to decode data
- * @see 8.1.3.4
- */
-static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
-{
-    GetBitContext *gb = &v->s.gb;
-    int index, escape, run = 0, level = 0, lst = 0;
-
-    index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
-    if (index != vc1_ac_sizes[codingset] - 1) {
-        run = vc1_index_decode_table[codingset][index][0];
-        level = vc1_index_decode_table[codingset][index][1];
-        lst = index >= vc1_last_decode_table[codingset];
-        if(get_bits1(gb))
-            level = -level;
-    } else {
-        escape = decode210(gb);
-        if (escape != 2) {
-            index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
-            run = vc1_index_decode_table[codingset][index][0];
-            level = vc1_index_decode_table[codingset][index][1];
-            lst = index >= vc1_last_decode_table[codingset];
-            if(escape == 0) {
-                if(lst)
-                    level += vc1_last_delta_level_table[codingset][run];
-                else
-                    level += vc1_delta_level_table[codingset][run];
-            } else {
-                if(lst)
-                    run += vc1_last_delta_run_table[codingset][level] + 1;
-                else
-                    run += vc1_delta_run_table[codingset][level] + 1;
-            }
-            if(get_bits1(gb))
-                level = -level;
-        } else {
-            int sign;
-            lst = get_bits1(gb);
-            if(v->s.esc3_level_length == 0) {
-                if(v->pq < 8 || v->dquantfrm) { // table 59
-                    v->s.esc3_level_length = get_bits(gb, 3);
-                    if(!v->s.esc3_level_length)
-                        v->s.esc3_level_length = get_bits(gb, 2) + 8;
-                } else { //table 60
-                    v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
-                }
-                v->s.esc3_run_length = 3 + get_bits(gb, 2);
-            }
-            run = get_bits(gb, v->s.esc3_run_length);
-            sign = get_bits1(gb);
-            level = get_bits(gb, v->s.esc3_level_length);
-            if(sign)
-                level = -level;
-        }
-    }
-
-    *last = lst;
-    *skip = run;
-    *value = level;
-}
-
-/** Decode intra block in intra frames - should be faster than decode_intra_block
- * @param v VC1Context
- * @param block block to decode
- * @param[in] n subblock index
- * @param coded are AC coeffs present or not
- * @param codingset set of VLC to decode data
- */
-static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
-{
-    GetBitContext *gb = &v->s.gb;
-    MpegEncContext *s = &v->s;
-    int dc_pred_dir = 0; /* Direction of the DC prediction used */
-    int i;
-    int16_t *dc_val;
-    int16_t *ac_val, *ac_val2;
-    int dcdiff;
-
-    /* Get DC differential */
-    if (n < 4) {
-        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
-    } else {
-        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
-    }
-    if (dcdiff < 0){
-        av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
-        return -1;
-    }
-    if (dcdiff)
-    {
-        if (dcdiff == 119 /* ESC index value */)
-        {
-            /* TODO: Optimize */
-            if (v->pq == 1) dcdiff = get_bits(gb, 10);
-            else if (v->pq == 2) dcdiff = get_bits(gb, 9);
-            else dcdiff = get_bits(gb, 8);
-        }
-        else
-        {
-            if (v->pq == 1)
-                dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
-            else if (v->pq == 2)
-                dcdiff = (dcdiff<<1) + get_bits1(gb)   - 1;
-        }
-        if (get_bits1(gb))
-            dcdiff = -dcdiff;
-    }
-
-    /* Prediction */
-    dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
-    *dc_val = dcdiff;
-
-    /* Store the quantized DC coeff, used for prediction */
-    if (n < 4) {
-        block[0] = dcdiff * s->y_dc_scale;
-    } else {
-        block[0] = dcdiff * s->c_dc_scale;
-    }
-    /* Skip ? */
-    if (!coded) {
-        goto not_coded;
-    }
-
-    //AC Decoding
-    i = 1;
-
-    {
-        int last = 0, skip, value;
-        const int8_t *zz_table;
-        int scale;
-        int k;
-
-        scale = v->pq * 2 + v->halfpq;
-
-        if(v->s.ac_pred) {
-            if(!dc_pred_dir)
-                zz_table = wmv1_scantable[2];
-            else
-                zz_table = wmv1_scantable[3];
-        } else
-            zz_table = wmv1_scantable[1];
-
-        ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
-        ac_val2 = ac_val;
-        if(dc_pred_dir) //left
-            ac_val -= 16;
-        else //top
-            ac_val -= 16 * s->block_wrap[n];
-
-        while (!last) {
-            vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
-            i += skip;
-            if(i > 63)
-                break;
-            block[zz_table[i++]] = value;
-        }
-
-        /* apply AC prediction if needed */
-        if(s->ac_pred) {
-            if(dc_pred_dir) { //left
-                for(k = 1; k < 8; k++)
-                    block[k << 3] += ac_val[k];
-            } else { //top
-                for(k = 1; k < 8; k++)
-                    block[k] += ac_val[k + 8];
-            }
-        }
-        /* save AC coeffs for further prediction */
-        for(k = 1; k < 8; k++) {
-            ac_val2[k] = block[k << 3];
-            ac_val2[k + 8] = block[k];
-        }
-
-        /* scale AC coeffs */
-        for(k = 1; k < 64; k++)
-            if(block[k]) {
-                block[k] *= scale;
-                if(!v->pquantizer)
-                    block[k] += (block[k] < 0) ? -v->pq : v->pq;
-            }
-
-        if(s->ac_pred) i = 63;
-    }
-
-not_coded:
-    if(!coded) {
-        int k, scale;
-        ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
-        ac_val2 = ac_val;
-
-        i = 0;
-        scale = v->pq * 2 + v->halfpq;
-        memset(ac_val2, 0, 16 * 2);
-        if(dc_pred_dir) {//left
-            ac_val -= 16;
-            if(s->ac_pred)
-                memcpy(ac_val2, ac_val, 8 * 2);
-        } else {//top
-            ac_val -= 16 * s->block_wrap[n];
-            if(s->ac_pred)
-                memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
-        }
-
-        /* apply AC prediction if needed */
-        if(s->ac_pred) {
-            if(dc_pred_dir) { //left
-                for(k = 1; k < 8; k++) {
-                    block[k << 3] = ac_val[k] * scale;
-                    if(!v->pquantizer && block[k << 3])
-                        block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
-                }
-            } else { //top
-                for(k = 1; k < 8; k++) {
-                    block[k] = ac_val[k + 8] * scale;
-                    if(!v->pquantizer && block[k])
-                        block[k] += (block[k] < 0) ? -v->pq : v->pq;
-                }
-            }
-            i = 63;
-        }
-    }
-    s->block_last_index[n] = i;
-
-    return 0;
-}
-
-/** Decode intra block in intra frames - should be faster than decode_intra_block
- * @param v VC1Context
- * @param block block to decode
- * @param[in] n subblock number
- * @param coded are AC coeffs present or not
- * @param codingset set of VLC to decode data
- * @param mquant quantizer value for this macroblock
- */
-static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
-{
-    GetBitContext *gb = &v->s.gb;
-    MpegEncContext *s = &v->s;
-    int dc_pred_dir = 0; /* Direction of the DC prediction used */
-    int i;
-    int16_t *dc_val;
-    int16_t *ac_val, *ac_val2;
-    int dcdiff;
-    int a_avail = v->a_avail, c_avail = v->c_avail;
-    int use_pred = s->ac_pred;
-    int scale;
-    int q1, q2 = 0;
-    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-
-    /* Get DC differential */
-    if (n < 4) {
-        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
-    } else {
-        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
-    }
-    if (dcdiff < 0){
-        av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
-        return -1;
-    }
-    if (dcdiff)
-    {
-        if (dcdiff == 119 /* ESC index value */)
-        {
-            /* TODO: Optimize */
-            if (mquant == 1) dcdiff = get_bits(gb, 10);
-            else if (mquant == 2) dcdiff = get_bits(gb, 9);
-            else dcdiff = get_bits(gb, 8);
-        }
-        else
-        {
-            if (mquant == 1)
-                dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
-            else if (mquant == 2)
-                dcdiff = (dcdiff<<1) + get_bits1(gb)   - 1;
-        }
-        if (get_bits1(gb))
-            dcdiff = -dcdiff;
-    }
-
-    /* Prediction */
-    dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
-    *dc_val = dcdiff;
-
-    /* Store the quantized DC coeff, used for prediction */
-    if (n < 4) {
-        block[0] = dcdiff * s->y_dc_scale;
-    } else {
-        block[0] = dcdiff * s->c_dc_scale;
-    }
-
-    //AC Decoding
-    i = 1;
-
-    /* check if AC is needed at all */
-    if(!a_avail && !c_avail) use_pred = 0;
-    ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
-    ac_val2 = ac_val;
-
-    scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
-
-    if(dc_pred_dir) //left
-        ac_val -= 16;
-    else //top
-        ac_val -= 16 * s->block_wrap[n];
-
-    q1 = s->current_picture.qscale_table[mb_pos];
-    if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
-    if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
-    if(dc_pred_dir && n==1) q2 = q1;
-    if(!dc_pred_dir && n==2) q2 = q1;
-    if(n==3) q2 = q1;
-
-    if(coded) {
-        int last = 0, skip, value;
-        const int8_t *zz_table;
-        int k;
-
-        if(v->s.ac_pred) {
-            if(!dc_pred_dir)
-                zz_table = wmv1_scantable[2];
-            else
-                zz_table = wmv1_scantable[3];
-        } else
-            zz_table = wmv1_scantable[1];
-
-        while (!last) {
-            vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
-            i += skip;
-            if(i > 63)
-                break;
-            block[zz_table[i++]] = value;
-        }
-
-        /* apply AC prediction if needed */
-        if(use_pred) {
-            /* scale predictors if needed*/
-            if(q2 && q1!=q2) {
-                q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
-                q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-
-                if(dc_pred_dir) { //left
-                    for(k = 1; k < 8; k++)
-                        block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                } else { //top
-                    for(k = 1; k < 8; k++)
-                        block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                }
-            } else {
-                if(dc_pred_dir) { //left
-                    for(k = 1; k < 8; k++)
-                        block[k << 3] += ac_val[k];
-                } else { //top
-                    for(k = 1; k < 8; k++)
-                        block[k] += ac_val[k + 8];
-                }
-            }
-        }
-        /* save AC coeffs for further prediction */
-        for(k = 1; k < 8; k++) {
-            ac_val2[k] = block[k << 3];
-            ac_val2[k + 8] = block[k];
-        }
-
-        /* scale AC coeffs */
-        for(k = 1; k < 64; k++)
-            if(block[k]) {
-                block[k] *= scale;
-                if(!v->pquantizer)
-                    block[k] += (block[k] < 0) ? -mquant : mquant;
-            }
-
-        if(use_pred) i = 63;
-    } else { // no AC coeffs
-        int k;
-
-        memset(ac_val2, 0, 16 * 2);
-        if(dc_pred_dir) {//left
-            if(use_pred) {
-                memcpy(ac_val2, ac_val, 8 * 2);
-                if(q2 && q1!=q2) {
-                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
-                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-                    for(k = 1; k < 8; k++)
-                        ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                }
-            }
-        } else {//top
-            if(use_pred) {
-                memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
-                if(q2 && q1!=q2) {
-                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
-                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-                    for(k = 1; k < 8; k++)
-                        ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                }
-            }
-        }
-
-        /* apply AC prediction if needed */
-        if(use_pred) {
-            if(dc_pred_dir) { //left
-                for(k = 1; k < 8; k++) {
-                    block[k << 3] = ac_val2[k] * scale;
-                    if(!v->pquantizer && block[k << 3])
-                        block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
-                }
-            } else { //top
-                for(k = 1; k < 8; k++) {
-                    block[k] = ac_val2[k + 8] * scale;
-                    if(!v->pquantizer && block[k])
-                        block[k] += (block[k] < 0) ? -mquant : mquant;
-                }
-            }
-            i = 63;
-        }
-    }
-    s->block_last_index[n] = i;
-
-    return 0;
-}
-
-/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
- * @param v VC1Context
- * @param block block to decode
- * @param[in] n subblock index
- * @param coded are AC coeffs present or not
- * @param mquant block quantizer
- * @param codingset set of VLC to decode data
- */
-static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
-{
-    GetBitContext *gb = &v->s.gb;
-    MpegEncContext *s = &v->s;
-    int dc_pred_dir = 0; /* Direction of the DC prediction used */
-    int i;
-    int16_t *dc_val;
-    int16_t *ac_val, *ac_val2;
-    int dcdiff;
-    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-    int a_avail = v->a_avail, c_avail = v->c_avail;
-    int use_pred = s->ac_pred;
-    int scale;
-    int q1, q2 = 0;
-
-    /* XXX: Guard against dumb values of mquant */
-    mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
-
-    /* Set DC scale - y and c use the same */
-    s->y_dc_scale = s->y_dc_scale_table[mquant];
-    s->c_dc_scale = s->c_dc_scale_table[mquant];
-
-    /* Get DC differential */
-    if (n < 4) {
-        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
-    } else {
-        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
-    }
-    if (dcdiff < 0){
-        av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
-        return -1;
-    }
-    if (dcdiff)
-    {
-        if (dcdiff == 119 /* ESC index value */)
-        {
-            /* TODO: Optimize */
-            if (mquant == 1) dcdiff = get_bits(gb, 10);
-            else if (mquant == 2) dcdiff = get_bits(gb, 9);
-            else dcdiff = get_bits(gb, 8);
-        }
-        else
-        {
-            if (mquant == 1)
-                dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
-            else if (mquant == 2)
-                dcdiff = (dcdiff<<1) + get_bits1(gb)   - 1;
-        }
-        if (get_bits1(gb))
-            dcdiff = -dcdiff;
-    }
-
-    /* Prediction */
-    dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
-    *dc_val = dcdiff;
-
-    /* Store the quantized DC coeff, used for prediction */
-
-    if (n < 4) {
-        block[0] = dcdiff * s->y_dc_scale;
-    } else {
-        block[0] = dcdiff * s->c_dc_scale;
-    }
-
-    //AC Decoding
-    i = 1;
-
-    /* check if AC is needed at all and adjust direction if needed */
-    if(!a_avail) dc_pred_dir = 1;
-    if(!c_avail) dc_pred_dir = 0;
-    if(!a_avail && !c_avail) use_pred = 0;
-    ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
-    ac_val2 = ac_val;
-
-    scale = mquant * 2 + v->halfpq;
-
-    if(dc_pred_dir) //left
-        ac_val -= 16;
-    else //top
-        ac_val -= 16 * s->block_wrap[n];
-
-    q1 = s->current_picture.qscale_table[mb_pos];
-    if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
-    if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
-    if(dc_pred_dir && n==1) q2 = q1;
-    if(!dc_pred_dir && n==2) q2 = q1;
-    if(n==3) q2 = q1;
-
-    if(coded) {
-        int last = 0, skip, value;
-        const int8_t *zz_table;
-        int k;
-
-        zz_table = wmv1_scantable[0];
-
-        while (!last) {
-            vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
-            i += skip;
-            if(i > 63)
-                break;
-            block[zz_table[i++]] = value;
-        }
-
-        /* apply AC prediction if needed */
-        if(use_pred) {
-            /* scale predictors if needed*/
-            if(q2 && q1!=q2) {
-                q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
-                q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-
-                if(dc_pred_dir) { //left
-                    for(k = 1; k < 8; k++)
-                        block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                } else { //top
-                    for(k = 1; k < 8; k++)
-                        block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                }
-            } else {
-                if(dc_pred_dir) { //left
-                    for(k = 1; k < 8; k++)
-                        block[k << 3] += ac_val[k];
-                } else { //top
-                    for(k = 1; k < 8; k++)
-                        block[k] += ac_val[k + 8];
-                }
-            }
-        }
-        /* save AC coeffs for further prediction */
-        for(k = 1; k < 8; k++) {
-            ac_val2[k] = block[k << 3];
-            ac_val2[k + 8] = block[k];
-        }
-
-        /* scale AC coeffs */
-        for(k = 1; k < 64; k++)
-            if(block[k]) {
-                block[k] *= scale;
-                if(!v->pquantizer)
-                    block[k] += (block[k] < 0) ? -mquant : mquant;
-            }
-
-        if(use_pred) i = 63;
-    } else { // no AC coeffs
-        int k;
-
-        memset(ac_val2, 0, 16 * 2);
-        if(dc_pred_dir) {//left
-            if(use_pred) {
-                memcpy(ac_val2, ac_val, 8 * 2);
-                if(q2 && q1!=q2) {
-                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
-                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-                    for(k = 1; k < 8; k++)
-                        ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                }
-            }
-        } else {//top
-            if(use_pred) {
-                memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
-                if(q2 && q1!=q2) {
-                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
-                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
-                    for(k = 1; k < 8; k++)
-                        ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
-                }
-            }
-        }
-
-        /* apply AC prediction if needed */
-        if(use_pred) {
-            if(dc_pred_dir) { //left
-                for(k = 1; k < 8; k++) {
-                    block[k << 3] = ac_val2[k] * scale;
-                    if(!v->pquantizer && block[k << 3])
-                        block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
-                }
-            } else { //top
-                for(k = 1; k < 8; k++) {
-                    block[k] = ac_val2[k + 8] * scale;
-                    if(!v->pquantizer && block[k])
-                        block[k] += (block[k] < 0) ? -mquant : mquant;
-                }
-            }
-            i = 63;
-        }
-    }
-    s->block_last_index[n] = i;
-
-    return 0;
-}
-
-/** Decode P block
- */
-static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block,
-                              uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left)
-{
-    MpegEncContext *s = &v->s;
-    GetBitContext *gb = &s->gb;
-    int i, j;
-    int subblkpat = 0;
-    int scale, off, idx, last, skip, value;
-    int ttblk = ttmb & 7;
-    int pat = 0;
-
-    if(ttmb == -1) {
-        ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
-    }
-    if(ttblk == TT_4X4) {
-        subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
-    }
-    if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
-        subblkpat = decode012(gb);
-        if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
-        if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
-        if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
-    }
-    scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
-
-    // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
-    if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
-        subblkpat = 2 - (ttblk == TT_8X4_TOP);
-        ttblk = TT_8X4;
-    }
-    if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
-        subblkpat = 2 - (ttblk == TT_4X8_LEFT);
-        ttblk = TT_4X8;
-    }
-    switch(ttblk) {
-    case TT_8X8:
-        pat = 0xF;
-        i = 0;
-        last = 0;
-        while (!last) {
-            vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
-            i += skip;
-            if(i > 63)
-                break;
-            idx = wmv1_scantable[0][i++];
-            block[idx] = value * scale;
-            if(!v->pquantizer)
-                block[idx] += (block[idx] < 0) ? -mquant : mquant;
-        }
-        if(!skip_block){
-            s->dsp.vc1_inv_trans_8x8(block);
-            s->dsp.add_pixels_clamped(block, dst, linesize);
-            if(apply_filter && cbp_top  & 0xC)
-                s->dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
-            if(apply_filter && cbp_left & 0xA)
-                s->dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
-        }
-        break;
-    case TT_4X4:
-        pat = ~subblkpat & 0xF;
-        for(j = 0; j < 4; j++) {
-            last = subblkpat & (1 << (3 - j));
-            i = 0;
-            off = (j & 1) * 4 + (j & 2) * 16;
-            while (!last) {
-                vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
-                i += skip;
-                if(i > 15)
-                    break;
-                idx = ff_vc1_simple_progressive_4x4_zz[i++];
-                block[idx + off] = value * scale;
-                if(!v->pquantizer)
-                    block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
-            }
-            if(!(subblkpat & (1 << (3 - j))) && !skip_block){
-                s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
-                if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2)))))
-                    s->dsp.vc1_v_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
-                if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1)))))
-                    s->dsp.vc1_h_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
-            }
-        }
-        break;
-    case TT_8X4:
-        pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF;
-        for(j = 0; j < 2; j++) {
-            last = subblkpat & (1 << (1 - j));
-            i = 0;
-            off = j * 32;
-            while (!last) {
-                vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
-                i += skip;
-                if(i > 31)
-                    break;
-                idx = v->zz_8x4[i++]+off;
-                block[idx] = value * scale;
-                if(!v->pquantizer)
-                    block[idx] += (block[idx] < 0) ? -mquant : mquant;
-            }
-            if(!(subblkpat & (1 << (1 - j))) && !skip_block){
-                s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
-                if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC))
-                    s->dsp.vc1_v_loop_filter8(dst + j*4*linesize, linesize, v->pq);
-                if(apply_filter && cbp_left & (2 << j))
-                    s->dsp.vc1_h_loop_filter4(dst + j*4*linesize, linesize, v->pq);
-            }
-        }
-        break;
-    case TT_4X8:
-        pat = ~(subblkpat*5) & 0xF;
-        for(j = 0; j < 2; j++) {
-            last = subblkpat & (1 << (1 - j));
-            i = 0;
-            off = j * 4;
-            while (!last) {
-                vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
-                i += skip;
-                if(i > 31)
-                    break;
-                idx = v->zz_4x8[i++]+off;
-                block[idx] = value * scale;
-                if(!v->pquantizer)
-                    block[idx] += (block[idx] < 0) ? -mquant : mquant;
-            }
-            if(!(subblkpat & (1 << (1 - j))) && !skip_block){
-                s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
-                if(apply_filter && cbp_top & (2 << j))
-                    s->dsp.vc1_v_loop_filter4(dst + j*4, linesize, v->pq);
-                if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA))
-                    s->dsp.vc1_h_loop_filter8(dst + j*4, linesize, v->pq);
-            }
-        }
-        break;
-    }
-    return pat;
-}
-
-/** @} */ // Macroblock group
-
-static const int size_table  [6] = { 0, 2, 3, 4,  5,  8 };
-static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 };
-
-/** Decode one P-frame MB (in Simple/Main profile)
- */
-static int vc1_decode_p_mb(VC1Context *v)
-{
-    MpegEncContext *s = &v->s;
-    GetBitContext *gb = &s->gb;
-    int i, j;
-    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-    int cbp; /* cbp decoding stuff */
-    int mqdiff, mquant; /* MB quantization */
-    int ttmb = v->ttfrm; /* MB Transform type */
-
-    int mb_has_coeffs = 1; /* last_flag */
-    int dmv_x, dmv_y; /* Differential MV components */
-    int index, index1; /* LUT indexes */
-    int val, sign; /* temp values */
-    int first_block = 1;
-    int dst_idx, off;
-    int skipped, fourmv;
-    int block_cbp = 0, pat;
-    int apply_loop_filter;
-
-    mquant = v->pq; /* Loosy initialization */
-
-    if (v->mv_type_is_raw)
-        fourmv = get_bits1(gb);
-    else
-        fourmv = v->mv_type_mb_plane[mb_pos];
-    if (v->skip_is_raw)
-        skipped = get_bits1(gb);
-    else
-        skipped = v->s.mbskip_table[mb_pos];
-
-    s->dsp.clear_blocks(s->block[0]);
-
-    apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
-    if (!fourmv) /* 1MV mode */
-    {
-        if (!skipped)
-        {
-            GET_MVDATA(dmv_x, dmv_y);
-
-            if (s->mb_intra) {
-                s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
-                s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
-            }
-            s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
-            vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
-
-            /* FIXME Set DC val for inter block ? */
-            if (s->mb_intra && !mb_has_coeffs)
-            {
-                GET_MQUANT();
-                s->ac_pred = get_bits1(gb);
-                cbp = 0;
-            }
-            else if (mb_has_coeffs)
-            {
-                if (s->mb_intra) s->ac_pred = get_bits1(gb);
-                cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
-                GET_MQUANT();
-            }
-            else
-            {
-                mquant = v->pq;
-                cbp = 0;
-            }
-            s->current_picture.qscale_table[mb_pos] = mquant;
-
-            if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
-                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
-                                VC1_TTMB_VLC_BITS, 2);
-            if(!s->mb_intra) vc1_mc_1mv(v, 0);
-            dst_idx = 0;
-            for (i=0; i<6; i++)
-            {
-                s->dc_val[0][s->block_index[i]] = 0;
-                dst_idx += i >> 2;
-                val = ((cbp >> (5 - i)) & 1);
-                off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
-                v->mb_type[0][s->block_index[i]] = s->mb_intra;
-                if(s->mb_intra) {
-                    /* check if prediction blocks A and C are available */
-                    v->a_avail = v->c_avail = 0;
-                    if(i == 2 || i == 3 || !s->first_slice_line)
-                        v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
-                    if(i == 1 || i == 3 || s->mb_x)
-                        v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
-                    vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
-                    if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
-                    s->dsp.vc1_inv_trans_8x8(s->block[i]);
-                    if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
-                    s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
-                    if(v->pq >= 9 && v->overlap) {
-                        if(v->c_avail)
-                            s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
-                        if(v->a_avail)
-                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
-                    }
-                    if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
-                        int left_cbp, top_cbp;
-                        if(i & 4){
-                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
-                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
-                        }else{
-                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
-                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
-                        }
-                        if(left_cbp & 0xC)
-                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                        if(top_cbp  & 0xA)
-                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                    }
-                    block_cbp |= 0xF << (i << 2);
-                } else if(val) {
-                    int left_cbp = 0, top_cbp = 0, filter = 0;
-                    if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
-                        filter = 1;
-                        if(i & 4){
-                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
-                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
-                        }else{
-                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
-                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
-                        }
-                        if(left_cbp & 0xC)
-                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                        if(top_cbp  & 0xA)
-                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                    }
-                    pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
-                    block_cbp |= pat << (i << 2);
-                    if(!v->ttmbf && ttmb < 8) ttmb = -1;
-                    first_block = 0;
-                }
-            }
-        }
-        else //Skipped
-        {
-            s->mb_intra = 0;
-            for(i = 0; i < 6; i++) {
-                v->mb_type[0][s->block_index[i]] = 0;
-                s->dc_val[0][s->block_index[i]] = 0;
-            }
-            s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
-            s->current_picture.qscale_table[mb_pos] = 0;
-            vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
-            vc1_mc_1mv(v, 0);
-            return 0;
-        }
-    } //1MV mode
-    else //4MV mode
-    {
-        if (!skipped /* unskipped MB */)
-        {
-            int intra_count = 0, coded_inter = 0;
-            int is_intra[6], is_coded[6];
-            /* Get CBPCY */
-            cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
-            for (i=0; i<6; i++)
-            {
-                val = ((cbp >> (5 - i)) & 1);
-                s->dc_val[0][s->block_index[i]] = 0;
-                s->mb_intra = 0;
-                if(i < 4) {
-                    dmv_x = dmv_y = 0;
-                    s->mb_intra = 0;
-                    mb_has_coeffs = 0;
-                    if(val) {
-                        GET_MVDATA(dmv_x, dmv_y);
-                    }
-                    vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
-                    if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
-                    intra_count += s->mb_intra;
-                    is_intra[i] = s->mb_intra;
-                    is_coded[i] = mb_has_coeffs;
-                }
-                if(i&4){
-                    is_intra[i] = (intra_count >= 3);
-                    is_coded[i] = val;
-                }
-                if(i == 4) vc1_mc_4mv_chroma(v);
-                v->mb_type[0][s->block_index[i]] = is_intra[i];
-                if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
-            }
-            // if there are no coded blocks then don't do anything more
-            if(!intra_count && !coded_inter) return 0;
-            dst_idx = 0;
-            GET_MQUANT();
-            s->current_picture.qscale_table[mb_pos] = mquant;
-            /* test if block is intra and has pred */
-            {
-                int intrapred = 0;
-                for(i=0; i<6; i++)
-                    if(is_intra[i]) {
-                        if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
-                            || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
-                            intrapred = 1;
-                            break;
-                        }
-                    }
-                if(intrapred)s->ac_pred = get_bits1(gb);
-                else s->ac_pred = 0;
-            }
-            if (!v->ttmbf && coded_inter)
-                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
-            for (i=0; i<6; i++)
-            {
-                dst_idx += i >> 2;
-                off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
-                s->mb_intra = is_intra[i];
-                if (is_intra[i]) {
-                    /* check if prediction blocks A and C are available */
-                    v->a_avail = v->c_avail = 0;
-                    if(i == 2 || i == 3 || !s->first_slice_line)
-                        v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
-                    if(i == 1 || i == 3 || s->mb_x)
-                        v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
-                    vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
-                    if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
-                    s->dsp.vc1_inv_trans_8x8(s->block[i]);
-                    if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
-                    s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
-                    if(v->pq >= 9 && v->overlap) {
-                        if(v->c_avail)
-                            s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
-                        if(v->a_avail)
-                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
-                    }
-                    if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
-                        int left_cbp, top_cbp;
-                        if(i & 4){
-                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
-                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
-                        }else{
-                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
-                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
-                        }
-                        if(left_cbp & 0xC)
-                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                        if(top_cbp  & 0xA)
-                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                    }
-                    block_cbp |= 0xF << (i << 2);
-                } else if(is_coded[i]) {
-                    int left_cbp = 0, top_cbp = 0, filter = 0;
-                    if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
-                        filter = 1;
-                        if(i & 4){
-                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
-                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
-                        }else{
-                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
-                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
-                        }
-                        if(left_cbp & 0xC)
-                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                        if(top_cbp  & 0xA)
-                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
-                    }
-                    pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
-                    block_cbp |= pat << (i << 2);
-                    if(!v->ttmbf && ttmb < 8) ttmb = -1;
-                    first_block = 0;
-                }
-            }
-            return 0;
-        }
-        else //Skipped MB
-        {
-            s->mb_intra = 0;
-            s->current_picture.qscale_table[mb_pos] = 0;
-            for (i=0; i<6; i++) {
-                v->mb_type[0][s->block_index[i]] = 0;
-                s->dc_val[0][s->block_index[i]] = 0;
-            }
-            for (i=0; i<4; i++)
-            {
-                vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
-                vc1_mc_4mv_luma(v, i);
-            }
-            vc1_mc_4mv_chroma(v);
-            s->current_picture.qscale_table[mb_pos] = 0;
-            return 0;
-        }
-    }
-    v->cbp[s->mb_x] = block_cbp;
-
-    /* Should never happen */
-    return -1;
-}
-
-/** Decode one B-frame MB (in Main profile)
- */
-static void vc1_decode_b_mb(VC1Context *v)
-{
-    MpegEncContext *s = &v->s;
-    GetBitContext *gb = &s->gb;
-    int i, j;
-    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-    int cbp = 0; /* cbp decoding stuff */
-    int mqdiff, mquant; /* MB quantization */
-    int ttmb = v->ttfrm; /* MB Transform type */
-    int mb_has_coeffs = 0; /* last_flag */
-    int index, index1; /* LUT indexes */
-    int val, sign; /* temp values */
-    int first_block = 1;
-    int dst_idx, off;
-    int skipped, direct;
-    int dmv_x[2], dmv_y[2];
-    int bmvtype = BMV_TYPE_BACKWARD;
-
-    mquant = v->pq; /* Loosy initialization */
-    s->mb_intra = 0;
-
-    if (v->dmb_is_raw)
-        direct = get_bits1(gb);
-    else
-        direct = v->direct_mb_plane[mb_pos];
-    if (v->skip_is_raw)
-        skipped = get_bits1(gb);
-    else
-        skipped = v->s.mbskip_table[mb_pos];
-
-    s->dsp.clear_blocks(s->block[0]);
-    dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
-    for(i = 0; i < 6; i++) {
-        v->mb_type[0][s->block_index[i]] = 0;
-        s->dc_val[0][s->block_index[i]] = 0;
-    }
-    s->current_picture.qscale_table[mb_pos] = 0;
-
-    if (!direct) {
-        if (!skipped) {
-            GET_MVDATA(dmv_x[0], dmv_y[0]);
-            dmv_x[1] = dmv_x[0];
-            dmv_y[1] = dmv_y[0];
-        }
-        if(skipped || !s->mb_intra) {
-            bmvtype = decode012(gb);
-            switch(bmvtype) {
-            case 0:
-                bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
-                break;
-            case 1:
-                bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
-                break;
-            case 2:
-                bmvtype = BMV_TYPE_INTERPOLATED;
-                dmv_x[0] = dmv_y[0] = 0;
-            }
-        }
-    }
-    for(i = 0; i < 6; i++)
-        v->mb_type[0][s->block_index[i]] = s->mb_intra;
-
-    if (skipped) {
-        if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
-        vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
-        vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
-        return;
-    }
-    if (direct) {
-        cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
-        GET_MQUANT();
-        s->mb_intra = 0;
-        s->current_picture.qscale_table[mb_pos] = mquant;
-        if(!v->ttmbf)
-            ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
-        dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
-        vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
-        vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
-    } else {
-        if(!mb_has_coeffs && !s->mb_intra) {
-            /* no coded blocks - effectively skipped */
-            vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
-            vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
-            return;
-        }
-        if(s->mb_intra && !mb_has_coeffs) {
-            GET_MQUANT();
-            s->current_picture.qscale_table[mb_pos] = mquant;
-            s->ac_pred = get_bits1(gb);
-            cbp = 0;
-            vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
-        } else {
-            if(bmvtype == BMV_TYPE_INTERPOLATED) {
-                GET_MVDATA(dmv_x[0], dmv_y[0]);
-                if(!mb_has_coeffs) {
-                    /* interpolated skipped block */
-                    vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
-                    vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
-                    return;
-                }
-            }
-            vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
-            if(!s->mb_intra) {
-                vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
-            }
-            if(s->mb_intra)
-                s->ac_pred = get_bits1(gb);
-            cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
-            GET_MQUANT();
-            s->current_picture.qscale_table[mb_pos] = mquant;
-            if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
-                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
-        }
-    }
-    dst_idx = 0;
-    for (i=0; i<6; i++)
-    {
-        s->dc_val[0][s->block_index[i]] = 0;
-        dst_idx += i >> 2;
-        val = ((cbp >> (5 - i)) & 1);
-        off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
-        v->mb_type[0][s->block_index[i]] = s->mb_intra;
-        if(s->mb_intra) {
-            /* check if prediction blocks A and C are available */
-            v->a_avail = v->c_avail = 0;
-            if(i == 2 || i == 3 || !s->first_slice_line)
-                v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
-            if(i == 1 || i == 3 || s->mb_x)
-                v->c_avail = v->mb_type[0][s->block_index[i] - 1];
-
-            vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
-            if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
-            s->dsp.vc1_inv_trans_8x8(s->block[i]);
-            if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
-            s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
-        } else if(val) {
-            vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), 0, 0, 0);
-            if(!v->ttmbf && ttmb < 8) ttmb = -1;
-            first_block = 0;
-        }
-    }
-}
-
-/** Decode blocks of I-frame
- */
-static void vc1_decode_i_blocks(VC1Context *v)
-{
-    int k, j;
-    MpegEncContext *s = &v->s;
-    int cbp, val;
-    uint8_t *coded_val;
-    int mb_pos;
-
-    /* select codingmode used for VLC tables selection */
-    switch(v->y_ac_table_index){
-    case 0:
-        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
-        break;
-    case 1:
-        v->codingset = CS_HIGH_MOT_INTRA;
-        break;
-    case 2:
-        v->codingset = CS_MID_RATE_INTRA;
-        break;
-    }
-
-    switch(v->c_ac_table_index){
-    case 0:
-        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
-        break;
-    case 1:
-        v->codingset2 = CS_HIGH_MOT_INTER;
-        break;
-    case 2:
-        v->codingset2 = CS_MID_RATE_INTER;
-        break;
-    }
-
-    /* Set DC scale - y and c use the same */
-    s->y_dc_scale = s->y_dc_scale_table[v->pq];
-    s->c_dc_scale = s->c_dc_scale_table[v->pq];
-
-    //do frame decode
-    s->mb_x = s->mb_y = 0;
-    s->mb_intra = 1;
-    s->first_slice_line = 1;
-    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
-        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
-            ff_init_block_index(s);
-            ff_update_block_index(s);
-            s->dsp.clear_blocks(s->block[0]);
-            mb_pos = s->mb_x + s->mb_y * s->mb_width;
-            s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
-            s->current_picture.qscale_table[mb_pos] = v->pq;
-            s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
-            s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
-
-            // do actual MB decoding and displaying
-            cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
-            v->s.ac_pred = get_bits1(&v->s.gb);
-
-            for(k = 0; k < 6; k++) {
-                val = ((cbp >> (5 - k)) & 1);
-
-                if (k < 4) {
-                    int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
-                    val = val ^ pred;
-                    *coded_val = val;
-                }
-                cbp |= val << (5 - k);
-
-                vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
-
-                s->dsp.vc1_inv_trans_8x8(s->block[k]);
-                if(v->pq >= 9 && v->overlap) {
-                    for(j = 0; j < 64; j++) s->block[k][j] += 128;
-                }
-            }
-
-            vc1_put_block(v, s->block);
-            if(v->pq >= 9 && v->overlap) {
-                if(s->mb_x) {
-                    s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
-                    s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
-                    if(!(s->flags & CODEC_FLAG_GRAY)) {
-                        s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
-                        s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
-                    }
-                }
-                s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
-                s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
-                if(!s->first_slice_line) {
-                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
-                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
-                    if(!(s->flags & CODEC_FLAG_GRAY)) {
-                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
-                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
-                    }
-                }
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
-            }
-            if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
-
-            if(get_bits_count(&s->gb) > v->bits) {
-                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
-                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
-                return;
-            }
-        }
-        ff_draw_horiz_band(s, s->mb_y * 16, 16);
-        s->first_slice_line = 0;
-    }
-    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-/** Decode blocks of I-frame for advanced profile
- */
-static void vc1_decode_i_blocks_adv(VC1Context *v)
-{
-    int k, j;
-    MpegEncContext *s = &v->s;
-    int cbp, val;
-    uint8_t *coded_val;
-    int mb_pos;
-    int mquant = v->pq;
-    int mqdiff;
-    int overlap;
-    GetBitContext *gb = &s->gb;
-
-    /* select codingmode used for VLC tables selection */
-    switch(v->y_ac_table_index){
-    case 0:
-        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
-        break;
-    case 1:
-        v->codingset = CS_HIGH_MOT_INTRA;
-        break;
-    case 2:
-        v->codingset = CS_MID_RATE_INTRA;
-        break;
-    }
-
-    switch(v->c_ac_table_index){
-    case 0:
-        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
-        break;
-    case 1:
-        v->codingset2 = CS_HIGH_MOT_INTER;
-        break;
-    case 2:
-        v->codingset2 = CS_MID_RATE_INTER;
-        break;
-    }
-
-    //do frame decode
-    s->mb_x = s->mb_y = 0;
-    s->mb_intra = 1;
-    s->first_slice_line = 1;
-    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
-        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
-            ff_init_block_index(s);
-            ff_update_block_index(s);
-            s->dsp.clear_blocks(s->block[0]);
-            mb_pos = s->mb_x + s->mb_y * s->mb_stride;
-            s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
-            s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
-            s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
-
-            // do actual MB decoding and displaying
-            cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
-            if(v->acpred_is_raw)
-                v->s.ac_pred = get_bits1(&v->s.gb);
-            else
-                v->s.ac_pred = v->acpred_plane[mb_pos];
-
-            if(v->condover == CONDOVER_SELECT) {
-                if(v->overflg_is_raw)
-                    overlap = get_bits1(&v->s.gb);
-                else
-                    overlap = v->over_flags_plane[mb_pos];
-            } else
-                overlap = (v->condover == CONDOVER_ALL);
-
-            GET_MQUANT();
-
-            s->current_picture.qscale_table[mb_pos] = mquant;
-            /* Set DC scale - y and c use the same */
-            s->y_dc_scale = s->y_dc_scale_table[mquant];
-            s->c_dc_scale = s->c_dc_scale_table[mquant];
-
-            for(k = 0; k < 6; k++) {
-                val = ((cbp >> (5 - k)) & 1);
-
-                if (k < 4) {
-                    int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
-                    val = val ^ pred;
-                    *coded_val = val;
-                }
-                cbp |= val << (5 - k);
-
-                v->a_avail = !s->first_slice_line || (k==2 || k==3);
-                v->c_avail = !!s->mb_x || (k==1 || k==3);
-
-                vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
-
-                s->dsp.vc1_inv_trans_8x8(s->block[k]);
-                for(j = 0; j < 64; j++) s->block[k][j] += 128;
-            }
-
-            vc1_put_block(v, s->block);
-            if(overlap) {
-                if(s->mb_x) {
-                    s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
-                    s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
-                    if(!(s->flags & CODEC_FLAG_GRAY)) {
-                        s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
-                        s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
-                    }
-                }
-                s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
-                s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
-                if(!s->first_slice_line) {
-                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
-                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
-                    if(!(s->flags & CODEC_FLAG_GRAY)) {
-                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
-                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
-                    }
-                }
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
-            }
-            if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
-
-            if(get_bits_count(&s->gb) > v->bits) {
-                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
-                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
-                return;
-            }
-        }
-        ff_draw_horiz_band(s, s->mb_y * 16, 16);
-        s->first_slice_line = 0;
-    }
-    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-static void vc1_decode_p_blocks(VC1Context *v)
-{
-    MpegEncContext *s = &v->s;
-
-    /* select codingmode used for VLC tables selection */
-    switch(v->c_ac_table_index){
-    case 0:
-        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
-        break;
-    case 1:
-        v->codingset = CS_HIGH_MOT_INTRA;
-        break;
-    case 2:
-        v->codingset = CS_MID_RATE_INTRA;
-        break;
-    }
-
-    switch(v->c_ac_table_index){
-    case 0:
-        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
-        break;
-    case 1:
-        v->codingset2 = CS_HIGH_MOT_INTER;
-        break;
-    case 2:
-        v->codingset2 = CS_MID_RATE_INTER;
-        break;
-    }
-
-    s->first_slice_line = 1;
-    memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
-    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
-        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
-            ff_init_block_index(s);
-            ff_update_block_index(s);
-            s->dsp.clear_blocks(s->block[0]);
-
-            vc1_decode_p_mb(v);
-            if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
-                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
-                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
-                return;
-            }
-        }
-        memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride);
-        ff_draw_horiz_band(s, s->mb_y * 16, 16);
-        s->first_slice_line = 0;
-    }
-    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-static void vc1_decode_b_blocks(VC1Context *v)
-{
-    MpegEncContext *s = &v->s;
-
-    /* select codingmode used for VLC tables selection */
-    switch(v->c_ac_table_index){
-    case 0:
-        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
-        break;
-    case 1:
-        v->codingset = CS_HIGH_MOT_INTRA;
-        break;
-    case 2:
-        v->codingset = CS_MID_RATE_INTRA;
-        break;
-    }
-
-    switch(v->c_ac_table_index){
-    case 0:
-        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
-        break;
-    case 1:
-        v->codingset2 = CS_HIGH_MOT_INTER;
-        break;
-    case 2:
-        v->codingset2 = CS_MID_RATE_INTER;
-        break;
-    }
-
-    s->first_slice_line = 1;
-    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
-        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
-            ff_init_block_index(s);
-            ff_update_block_index(s);
-            s->dsp.clear_blocks(s->block[0]);
-
-            vc1_decode_b_mb(v);
-            if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
-                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
-                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
-                return;
-            }
-            if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
-        }
-        ff_draw_horiz_band(s, s->mb_y * 16, 16);
-        s->first_slice_line = 0;
-    }
-    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-}
-
-static void vc1_decode_skip_blocks(VC1Context *v)
-{
-    MpegEncContext *s = &v->s;
-
-    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
-    s->first_slice_line = 1;
-    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
-        s->mb_x = 0;
-        ff_init_block_index(s);
-        ff_update_block_index(s);
-        memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
-        memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
-        memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
-        ff_draw_horiz_band(s, s->mb_y * 16, 16);
-        s->first_slice_line = 0;
-    }
-    s->pict_type = FF_P_TYPE;
-}
-
-static void vc1_decode_blocks(VC1Context *v)
-{
-
-    v->s.esc3_level_length = 0;
-    if(v->x8_type){
-        ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
-    }else{
-
-        switch(v->s.pict_type) {
-        case FF_I_TYPE:
-            if(v->profile == PROFILE_ADVANCED)
-                vc1_decode_i_blocks_adv(v);
-            else
-                vc1_decode_i_blocks(v);
-            break;
-        case FF_P_TYPE:
-            if(v->p_frame_skipped)
-                vc1_decode_skip_blocks(v);
-            else
-                vc1_decode_p_blocks(v);
-            break;
-        case FF_B_TYPE:
-            if(v->bi_type){
-                if(v->profile == PROFILE_ADVANCED)
-                    vc1_decode_i_blocks_adv(v);
-                else
-                    vc1_decode_i_blocks(v);
-            }else
-                vc1_decode_b_blocks(v);
-            break;
-        }
-    }
-}
-
-/** Initialize a VC1/WMV3 decoder
- * @todo TODO: Handle VC-1 IDUs (Transport level?)
- * @todo TODO: Decypher remaining bits in extra_data
- */
-static av_cold int vc1_decode_init(AVCodecContext *avctx)
-{
-    VC1Context *v = avctx->priv_data;
-    MpegEncContext *s = &v->s;
-    GetBitContext gb;
-
-    if (!avctx->extradata_size || !avctx->extradata) return -1;
-    if (!(avctx->flags & CODEC_FLAG_GRAY))
-        avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
-    else
-        avctx->pix_fmt = PIX_FMT_GRAY8;
-    avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
-    v->s.avctx = avctx;
-    avctx->flags |= CODEC_FLAG_EMU_EDGE;
-    v->s.flags |= CODEC_FLAG_EMU_EDGE;
-
-    if(avctx->idct_algo==FF_IDCT_AUTO){
-        avctx->idct_algo=FF_IDCT_WMV2;
-    }
-
-    if(ff_h263_decode_init(avctx) < 0)
-        return -1;
-    if (vc1_init_common(v) < 0) return -1;
-
-    avctx->coded_width = avctx->width;
-    avctx->coded_height = avctx->height;
-    if (avctx->codec_id == CODEC_ID_WMV3)
-    {
-        int count = 0;
-
-        // looks like WMV3 has a sequence header stored in the extradata
-        // advanced sequence header may be before the first frame
-        // the last byte of the extradata is a version number, 1 for the
-        // samples we can decode
-
-        init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
-
-        if (vc1_decode_sequence_header(avctx, v, &gb) < 0)
-          return -1;
-
-        count = avctx->extradata_size*8 - get_bits_count(&gb);
-        if (count>0)
-        {
-            av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
-                   count, get_bits(&gb, count));
-        }
-        else if (count < 0)
-        {
-            av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
-        }
-    } else { // VC1/WVC1
-        const uint8_t *start = avctx->extradata;
-        uint8_t *end = avctx->extradata + avctx->extradata_size;
-        const uint8_t *next;
-        int size, buf2_size;
-        uint8_t *buf2 = NULL;
-        int seq_initialized = 0, ep_initialized = 0;
-
-        if(avctx->extradata_size < 16) {
-            av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
-            return -1;
-        }
-
-        buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
-        if(start[0]) start++; // in WVC1 extradata first byte is its size
-        next = start;
-        for(; next < end; start = next){
-            next = find_next_marker(start + 4, end);
-            size = next - start - 4;
-            if(size <= 0) continue;
-            buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
-            init_get_bits(&gb, buf2, buf2_size * 8);
-            switch(AV_RB32(start)){
-            case VC1_CODE_SEQHDR:
-                if(vc1_decode_sequence_header(avctx, v, &gb) < 0){
-                    av_free(buf2);
-                    return -1;
-                }
-                seq_initialized = 1;
-                break;
-            case VC1_CODE_ENTRYPOINT:
-                if(vc1_decode_entry_point(avctx, v, &gb) < 0){
-                    av_free(buf2);
-                    return -1;
-                }
-                ep_initialized = 1;
-                break;
-            }
-        }
-        av_free(buf2);
-        if(!seq_initialized || !ep_initialized){
-            av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
-            return -1;
-        }
-    }
-    avctx->has_b_frames= !!(avctx->max_b_frames);
-    s->low_delay = !avctx->has_b_frames;
-
-    s->mb_width = (avctx->coded_width+15)>>4;
-    s->mb_height = (avctx->coded_height+15)>>4;
-
-    /* Allocate mb bitplanes */
-    v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
-    v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
-    v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
-    v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
-
-    v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
-    v->cbp = v->cbp_base + s->mb_stride;
-
-    /* allocate block type info in that way so it could be used with s->block_index[] */
-    v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
-    v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
-    v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
-    v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
-
-    /* Init coded blocks info */
-    if (v->profile == PROFILE_ADVANCED)
-    {
-//        if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
-//            return -1;
-//        if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
-//            return -1;
-    }
-
-    ff_intrax8_common_init(&v->x8,s);
-    return 0;
-}
-
-
-/** Decode a VC1/WMV3 frame
- * @todo TODO: Handle VC-1 IDUs (Transport level?)
- */
-static int vc1_decode_frame(AVCodecContext *avctx,
-                            void *data, int *data_size,
-                            AVPacket *avpkt)
-{
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    VC1Context *v = avctx->priv_data;
-    MpegEncContext *s = &v->s;
-    AVFrame *pict = data;
-    uint8_t *buf2 = NULL;
-    const uint8_t *buf_start = buf;
-
-    /* no supplementary picture */
-    if (buf_size == 0) {
-        /* special case for last picture */
-        if (s->low_delay==0 && s->next_picture_ptr) {
-            *pict= *(AVFrame*)s->next_picture_ptr;
-            s->next_picture_ptr= NULL;
-
-            *data_size = sizeof(AVFrame);
-        }
-
-        return 0;
-    }
-
-    /* We need to set current_picture_ptr before reading the header,
-     * otherwise we cannot store anything in there. */
-    if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
-        int i= ff_find_unused_picture(s, 0);
-        s->current_picture_ptr= &s->picture[i];
-    }
-
-    if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
-        if (v->profile < PROFILE_ADVANCED)
-            avctx->pix_fmt = PIX_FMT_VDPAU_WMV3;
-        else
-            avctx->pix_fmt = PIX_FMT_VDPAU_VC1;
-    }
-
-    //for advanced profile we may need to parse and unescape data
-    if (avctx->codec_id == CODEC_ID_VC1) {
-        int buf_size2 = 0;
-        buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
-
-        if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
-            const uint8_t *start, *end, *next;
-            int size;
-
-            next = buf;
-            for(start = buf, end = buf + buf_size; next < end; start = next){
-                next = find_next_marker(start + 4, end);
-                size = next - start - 4;
-                if(size <= 0) continue;
-                switch(AV_RB32(start)){
-                case VC1_CODE_FRAME:
-                    if (avctx->hwaccel ||
-                        s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
-                        buf_start = start;
-                    buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
-                    break;
-                case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
-                    buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
-                    init_get_bits(&s->gb, buf2, buf_size2*8);
-                    vc1_decode_entry_point(avctx, v, &s->gb);
-                    break;
-                case VC1_CODE_SLICE:
-                    av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
-                    av_free(buf2);
-                    return -1;
-                }
-            }
-        }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
-            const uint8_t *divider;
-
-            divider = find_next_marker(buf, buf + buf_size);
-            if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
-                av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
-                av_free(buf2);
-                return -1;
-            }
-
-            buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
-            // TODO
-            av_free(buf2);return -1;
-        }else{
-            buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
-        }
-        init_get_bits(&s->gb, buf2, buf_size2*8);
-    } else
-        init_get_bits(&s->gb, buf, buf_size*8);
-    // do parse frame header
-    if(v->profile < PROFILE_ADVANCED) {
-        if(vc1_parse_frame_header(v, &s->gb) == -1) {
-            av_free(buf2);
-            return -1;
-        }
-    } else {
-        if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
-            av_free(buf2);
-            return -1;
-        }
-    }
-
-    if(s->pict_type != FF_I_TYPE && !v->res_rtm_flag){
-        av_free(buf2);
-        return -1;
-    }
-
-    // for hurry_up==5
-    s->current_picture.pict_type= s->pict_type;
-    s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
-
-    /* skip B-frames if we don't have reference frames */
-    if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){
-        av_free(buf2);
-        return -1;//buf_size;
-    }
-    /* skip b frames if we are in a hurry */
-    if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size;
-    if(   (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
-       || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
-       ||  avctx->skip_frame >= AVDISCARD_ALL) {
-        av_free(buf2);
-        return buf_size;
-    }
-    /* skip everything if we are in a hurry>=5 */
-    if(avctx->hurry_up>=5) {
-        av_free(buf2);
-        return -1;//buf_size;
-    }
-
-    if(s->next_p_frame_damaged){
-        if(s->pict_type==FF_B_TYPE)
-            return buf_size;
-        else
-            s->next_p_frame_damaged=0;
-    }
-
-    if(MPV_frame_start(s, avctx) < 0) {
-        av_free(buf2);
-        return -1;
-    }
-
-    s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
-    s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
-
-    if ((CONFIG_VC1_VDPAU_DECODER || CONFIG_WMV3_VDPAU_DECODER)
-        &&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
-        ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
-    else if (avctx->hwaccel) {
-        if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
-            return -1;
-        if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0)
-            return -1;
-        if (avctx->hwaccel->end_frame(avctx) < 0)
-            return -1;
-    } else {
-        ff_er_frame_start(s);
-
-        v->bits = buf_size * 8;
-        vc1_decode_blocks(v);
-//av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
-//  if(get_bits_count(&s->gb) > buf_size * 8)
-//      return -1;
-        ff_er_frame_end(s);
-    }
-
-    MPV_frame_end(s);
-
-assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
-assert(s->current_picture.pict_type == s->pict_type);
-    if (s->pict_type == FF_B_TYPE || s->low_delay) {
-        *pict= *(AVFrame*)s->current_picture_ptr;
-    } else if (s->last_picture_ptr != NULL) {
-        *pict= *(AVFrame*)s->last_picture_ptr;
-    }
-
-    if(s->last_picture_ptr || s->low_delay){
-        *data_size = sizeof(AVFrame);
-        ff_print_debug_info(s, pict);
-    }
-
-    av_free(buf2);
-    return buf_size;
-}
-
-
-/** Close a VC1/WMV3 decoder
- * @warning Initial try at using MpegEncContext stuff
- */
-static av_cold int vc1_decode_end(AVCodecContext *avctx)
-{
-    VC1Context *v = avctx->priv_data;
-
-    av_freep(&v->hrd_rate);
-    av_freep(&v->hrd_buffer);
-    MPV_common_end(&v->s);
-    av_freep(&v->mv_type_mb_plane);
-    av_freep(&v->direct_mb_plane);
-    av_freep(&v->acpred_plane);
-    av_freep(&v->over_flags_plane);
-    av_freep(&v->mb_type_base);
-    av_freep(&v->cbp_base);
-    ff_intrax8_common_end(&v->x8);
-    return 0;
-}
-
-
-AVCodec vc1_decoder = {
-    "vc1",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_VC1,
-    sizeof(VC1Context),
-    vc1_decode_init,
-    NULL,
-    vc1_decode_end,
-    vc1_decode_frame,
-    CODEC_CAP_DR1 | CODEC_CAP_DELAY,
-    NULL,
-    .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
-    .pix_fmts = ff_hwaccel_pixfmt_list_420
-};
-
-AVCodec wmv3_decoder = {
-    "wmv3",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_WMV3,
-    sizeof(VC1Context),
-    vc1_decode_init,
-    NULL,
-    vc1_decode_end,
-    vc1_decode_frame,
-    CODEC_CAP_DR1 | CODEC_CAP_DELAY,
-    NULL,
-    .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
-    .pix_fmts = ff_hwaccel_pixfmt_list_420
-};
-
-#if CONFIG_WMV3_VDPAU_DECODER
-AVCodec wmv3_vdpau_decoder = {
-    "wmv3_vdpau",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_WMV3,
-    sizeof(VC1Context),
-    vc1_decode_init,
-    NULL,
-    vc1_decode_end,
-    vc1_decode_frame,
-    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
-    NULL,
-    .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
-    .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_WMV3, PIX_FMT_NONE}
-};
-#endif
-
-#if CONFIG_VC1_VDPAU_DECODER
-AVCodec vc1_vdpau_decoder = {
-    "vc1_vdpau",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_VC1,
-    sizeof(VC1Context),
-    vc1_decode_init,
-    NULL,
-    vc1_decode_end,
-    vc1_decode_frame,
-    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
-    NULL,
-    .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
-    .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_VC1, PIX_FMT_NONE}
-};
-#endif
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
new file mode 100644 (file)
index 0000000..5d4dd06
--- /dev/null
@@ -0,0 +1,3367 @@
+/*
+ * VC-1 and WMV3 decoder
+ * Copyright (c) 2006-2007 Konstantin Shishkov
+ * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file libavcodec/vc1dec.c
+ * VC-1 and WMV3 decoder
+ *
+ */
+#include "internal.h"
+#include "dsputil.h"
+#include "avcodec.h"
+#include "mpegvideo.h"
+#include "vc1.h"
+#include "vc1data.h"
+#include "vc1acdata.h"
+#include "msmpeg4data.h"
+#include "unary.h"
+#include "simple_idct.h"
+#include "mathops.h"
+#include "vdpau_internal.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+#define MB_INTRA_VLC_BITS 9
+#define DC_VLC_BITS 9
+#define AC_VLC_BITS 9
+static const uint16_t table_mb_intra[64][2];
+
+
+static const uint16_t vlc_offs[] = {
+       0,   520,   552,   616,  1128,  1160, 1224, 1740, 1772, 1836, 1900, 2436,
+    2986,  3050,  3610,  4154,  4218,  4746, 5326, 5390, 5902, 6554, 7658, 8620,
+    9262, 10202, 10756, 11310, 12228, 15078
+};
+
+/**
+ * Init VC-1 specific tables and VC1Context members
+ * @param v The VC1Context to initialize
+ * @return Status
+ */
+static int vc1_init_common(VC1Context *v)
+{
+    static int done = 0;
+    int i = 0;
+    static VLC_TYPE vlc_table[15078][2];
+
+    v->hrd_rate = v->hrd_buffer = NULL;
+
+    /* VLC tables */
+    if(!done)
+    {
+        INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
+                 ff_vc1_bfraction_bits, 1, 1,
+                 ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
+        INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
+                 ff_vc1_norm2_bits, 1, 1,
+                 ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
+        INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
+                 ff_vc1_norm6_bits, 1, 1,
+                 ff_vc1_norm6_codes, 2, 2, 556);
+        INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
+                 ff_vc1_imode_bits, 1, 1,
+                 ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
+        for (i=0; i<3; i++)
+        {
+            ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i*3+0]];
+            ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i*3+1] - vlc_offs[i*3+0];
+            init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
+                     ff_vc1_ttmb_bits[i], 1, 1,
+                     ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
+            ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i*3+1]];
+            ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i*3+2] - vlc_offs[i*3+1];
+            init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
+                     ff_vc1_ttblk_bits[i], 1, 1,
+                     ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
+            ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i*3+2]];
+            ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i*3+3] - vlc_offs[i*3+2];
+            init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
+                     ff_vc1_subblkpat_bits[i], 1, 1,
+                     ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
+        }
+        for(i=0; i<4; i++)
+        {
+            ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i*3+9]];
+            ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i*3+10] - vlc_offs[i*3+9];
+            init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
+                     ff_vc1_4mv_block_pattern_bits[i], 1, 1,
+                     ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
+            ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i*3+10]];
+            ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i*3+11] - vlc_offs[i*3+10];
+            init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
+                     ff_vc1_cbpcy_p_bits[i], 1, 1,
+                     ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
+            ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i*3+11]];
+            ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i*3+12] - vlc_offs[i*3+11];
+            init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
+                     ff_vc1_mv_diff_bits[i], 1, 1,
+                     ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
+        }
+        for(i=0; i<8; i++){
+            ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i+21]];
+            ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i+22] - vlc_offs[i+21];
+            init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
+                     &vc1_ac_tables[i][0][1], 8, 4,
+                     &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
+        }
+        //FIXME: switching to INIT_VLC_STATIC() results in incorrect decoding
+        init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
+                 &ff_msmp4_mb_i_table[0][1], 4, 2,
+                 &ff_msmp4_mb_i_table[0][0], 4, 2, INIT_VLC_USE_STATIC);
+        done = 1;
+    }
+
+    /* Other defaults */
+    v->pq = -1;
+    v->mvrange = 0; /* 7.1.1.18, p80 */
+
+    return 0;
+}
+
+/***********************************************************************/
+/**
+ * @defgroup vc1bitplane VC-1 Bitplane decoding
+ * @see 8.7, p56
+ * @{
+ */
+
+/**
+ * Imode types
+ * @{
+ */
+enum Imode {
+    IMODE_RAW,
+    IMODE_NORM2,
+    IMODE_DIFF2,
+    IMODE_NORM6,
+    IMODE_DIFF6,
+    IMODE_ROWSKIP,
+    IMODE_COLSKIP
+};
+/** @} */ //imode defines
+
+
+/** @} */ //Bitplane group
+
+static void vc1_loop_filter_iblk(MpegEncContext *s, int pq)
+{
+    int i, j;
+    if(!s->first_slice_line)
+        s->dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq);
+    s->dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq);
+    for(i = !s->mb_x*8; i < 16; i += 8)
+        s->dsp.vc1_h_loop_filter16(s->dest[0] + i, s->linesize, pq);
+    for(j = 0; j < 2; j++){
+        if(!s->first_slice_line)
+            s->dsp.vc1_v_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
+        if(s->mb_x)
+            s->dsp.vc1_h_loop_filter8(s->dest[j+1], s->uvlinesize, pq);
+    }
+}
+
+/** Put block onto picture
+ */
+static void vc1_put_block(VC1Context *v, DCTELEM block[6][64])
+{
+    uint8_t *Y;
+    int ys, us, vs;
+    DSPContext *dsp = &v->s.dsp;
+
+    if(v->rangeredfrm) {
+        int i, j, k;
+        for(k = 0; k < 6; k++)
+            for(j = 0; j < 8; j++)
+                for(i = 0; i < 8; i++)
+                    block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128;
+
+    }
+    ys = v->s.current_picture.linesize[0];
+    us = v->s.current_picture.linesize[1];
+    vs = v->s.current_picture.linesize[2];
+    Y = v->s.dest[0];
+
+    dsp->put_pixels_clamped(block[0], Y, ys);
+    dsp->put_pixels_clamped(block[1], Y + 8, ys);
+    Y += ys * 8;
+    dsp->put_pixels_clamped(block[2], Y, ys);
+    dsp->put_pixels_clamped(block[3], Y + 8, ys);
+
+    if(!(v->s.flags & CODEC_FLAG_GRAY)) {
+        dsp->put_pixels_clamped(block[4], v->s.dest[1], us);
+        dsp->put_pixels_clamped(block[5], v->s.dest[2], vs);
+    }
+}
+
+/** Do motion compensation over 1 macroblock
+ * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c
+ */
+static void vc1_mc_1mv(VC1Context *v, int dir)
+{
+    MpegEncContext *s = &v->s;
+    DSPContext *dsp = &v->s.dsp;
+    uint8_t *srcY, *srcU, *srcV;
+    int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
+
+    if(!v->s.last_picture.data[0])return;
+
+    mx = s->mv[dir][0][0];
+    my = s->mv[dir][0][1];
+
+    // store motion vectors for further use in B frames
+    if(s->pict_type == FF_P_TYPE) {
+        s->current_picture.motion_val[1][s->block_index[0]][0] = mx;
+        s->current_picture.motion_val[1][s->block_index[0]][1] = my;
+    }
+    uvmx = (mx + ((mx & 3) == 3)) >> 1;
+    uvmy = (my + ((my & 3) == 3)) >> 1;
+    if(v->fastuvmc) {
+        uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
+        uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
+    }
+    if(!dir) {
+        srcY = s->last_picture.data[0];
+        srcU = s->last_picture.data[1];
+        srcV = s->last_picture.data[2];
+    } else {
+        srcY = s->next_picture.data[0];
+        srcU = s->next_picture.data[1];
+        srcV = s->next_picture.data[2];
+    }
+
+    src_x = s->mb_x * 16 + (mx >> 2);
+    src_y = s->mb_y * 16 + (my >> 2);
+    uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
+    uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
+
+    if(v->profile != PROFILE_ADVANCED){
+        src_x   = av_clip(  src_x, -16, s->mb_width  * 16);
+        src_y   = av_clip(  src_y, -16, s->mb_height * 16);
+        uvsrc_x = av_clip(uvsrc_x,  -8, s->mb_width  *  8);
+        uvsrc_y = av_clip(uvsrc_y,  -8, s->mb_height *  8);
+    }else{
+        src_x   = av_clip(  src_x, -17, s->avctx->coded_width);
+        src_y   = av_clip(  src_y, -18, s->avctx->coded_height + 1);
+        uvsrc_x = av_clip(uvsrc_x,  -8, s->avctx->coded_width  >> 1);
+        uvsrc_y = av_clip(uvsrc_y,  -8, s->avctx->coded_height >> 1);
+    }
+
+    srcY += src_y * s->linesize + src_x;
+    srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
+    srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
+
+    /* for grayscale we should not try to read from unknown area */
+    if(s->flags & CODEC_FLAG_GRAY) {
+        srcU = s->edge_emu_buffer + 18 * s->linesize;
+        srcV = s->edge_emu_buffer + 18 * s->linesize;
+    }
+
+    if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
+       || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
+       || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
+        uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
+
+        srcY -= s->mspel * (1 + s->linesize);
+        ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
+                            src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
+        srcY = s->edge_emu_buffer;
+        ff_emulated_edge_mc(uvbuf     , srcU, s->uvlinesize, 8+1, 8+1,
+                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
+        ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
+                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
+        srcU = uvbuf;
+        srcV = uvbuf + 16;
+        /* if we deal with range reduction we need to scale source blocks */
+        if(v->rangeredfrm) {
+            int i, j;
+            uint8_t *src, *src2;
+
+            src = srcY;
+            for(j = 0; j < 17 + s->mspel*2; j++) {
+                for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
+                src += s->linesize;
+            }
+            src = srcU; src2 = srcV;
+            for(j = 0; j < 9; j++) {
+                for(i = 0; i < 9; i++) {
+                    src[i] = ((src[i] - 128) >> 1) + 128;
+                    src2[i] = ((src2[i] - 128) >> 1) + 128;
+                }
+                src += s->uvlinesize;
+                src2 += s->uvlinesize;
+            }
+        }
+        /* if we deal with intensity compensation we need to scale source blocks */
+        if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
+            int i, j;
+            uint8_t *src, *src2;
+
+            src = srcY;
+            for(j = 0; j < 17 + s->mspel*2; j++) {
+                for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]];
+                src += s->linesize;
+            }
+            src = srcU; src2 = srcV;
+            for(j = 0; j < 9; j++) {
+                for(i = 0; i < 9; i++) {
+                    src[i] = v->lutuv[src[i]];
+                    src2[i] = v->lutuv[src2[i]];
+                }
+                src += s->uvlinesize;
+                src2 += s->uvlinesize;
+            }
+        }
+        srcY += s->mspel * (1 + s->linesize);
+    }
+
+    if(s->mspel) {
+        dxy = ((my & 3) << 2) | (mx & 3);
+        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0]    , srcY    , s->linesize, v->rnd);
+        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
+        srcY += s->linesize * 8;
+        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize    , srcY    , s->linesize, v->rnd);
+        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
+    } else { // hpel mc - always used for luma
+        dxy = (my & 2) | ((mx & 2) >> 1);
+
+        if(!v->rnd)
+            dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
+        else
+            dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
+    }
+
+    if(s->flags & CODEC_FLAG_GRAY) return;
+    /* Chroma MC always uses qpel bilinear */
+    uvmx = (uvmx&3)<<1;
+    uvmy = (uvmy&3)<<1;
+    if(!v->rnd){
+        dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+        dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+    }else{
+        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+    }
+}
+
+/** Do motion compensation for 4-MV macroblock - luminance block
+ */
+static void vc1_mc_4mv_luma(VC1Context *v, int n)
+{
+    MpegEncContext *s = &v->s;
+    DSPContext *dsp = &v->s.dsp;
+    uint8_t *srcY;
+    int dxy, mx, my, src_x, src_y;
+    int off;
+
+    if(!v->s.last_picture.data[0])return;
+    mx = s->mv[0][n][0];
+    my = s->mv[0][n][1];
+    srcY = s->last_picture.data[0];
+
+    off = s->linesize * 4 * (n&2) + (n&1) * 8;
+
+    src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2);
+    src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2);
+
+    if(v->profile != PROFILE_ADVANCED){
+        src_x   = av_clip(  src_x, -16, s->mb_width  * 16);
+        src_y   = av_clip(  src_y, -16, s->mb_height * 16);
+    }else{
+        src_x   = av_clip(  src_x, -17, s->avctx->coded_width);
+        src_y   = av_clip(  src_y, -18, s->avctx->coded_height + 1);
+    }
+
+    srcY += src_y * s->linesize + src_x;
+
+    if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
+       || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2
+       || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){
+        srcY -= s->mspel * (1 + s->linesize);
+        ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2,
+                            src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
+        srcY = s->edge_emu_buffer;
+        /* if we deal with range reduction we need to scale source blocks */
+        if(v->rangeredfrm) {
+            int i, j;
+            uint8_t *src;
+
+            src = srcY;
+            for(j = 0; j < 9 + s->mspel*2; j++) {
+                for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
+                src += s->linesize;
+            }
+        }
+        /* if we deal with intensity compensation we need to scale source blocks */
+        if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
+            int i, j;
+            uint8_t *src;
+
+            src = srcY;
+            for(j = 0; j < 9 + s->mspel*2; j++) {
+                for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]];
+                src += s->linesize;
+            }
+        }
+        srcY += s->mspel * (1 + s->linesize);
+    }
+
+    if(s->mspel) {
+        dxy = ((my & 3) << 2) | (mx & 3);
+        dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd);
+    } else { // hpel mc - always used for luma
+        dxy = (my & 2) | ((mx & 2) >> 1);
+        if(!v->rnd)
+            dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
+        else
+            dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8);
+    }
+}
+
+static inline int median4(int a, int b, int c, int d)
+{
+    if(a < b) {
+        if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2;
+        else      return (FFMIN(b, c) + FFMAX(a, d)) / 2;
+    } else {
+        if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2;
+        else      return (FFMIN(a, c) + FFMAX(b, d)) / 2;
+    }
+}
+
+
+/** Do motion compensation for 4-MV macroblock - both chroma blocks
+ */
+static void vc1_mc_4mv_chroma(VC1Context *v)
+{
+    MpegEncContext *s = &v->s;
+    DSPContext *dsp = &v->s.dsp;
+    uint8_t *srcU, *srcV;
+    int uvmx, uvmy, uvsrc_x, uvsrc_y;
+    int i, idx, tx = 0, ty = 0;
+    int mvx[4], mvy[4], intra[4];
+    static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
+
+    if(!v->s.last_picture.data[0])return;
+    if(s->flags & CODEC_FLAG_GRAY) return;
+
+    for(i = 0; i < 4; i++) {
+        mvx[i] = s->mv[0][i][0];
+        mvy[i] = s->mv[0][i][1];
+        intra[i] = v->mb_type[0][s->block_index[i]];
+    }
+
+    /* calculate chroma MV vector from four luma MVs */
+    idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0];
+    if(!idx) { // all blocks are inter
+        tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]);
+        ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]);
+    } else if(count[idx] == 1) { // 3 inter blocks
+        switch(idx) {
+        case 0x1:
+            tx = mid_pred(mvx[1], mvx[2], mvx[3]);
+            ty = mid_pred(mvy[1], mvy[2], mvy[3]);
+            break;
+        case 0x2:
+            tx = mid_pred(mvx[0], mvx[2], mvx[3]);
+            ty = mid_pred(mvy[0], mvy[2], mvy[3]);
+            break;
+        case 0x4:
+            tx = mid_pred(mvx[0], mvx[1], mvx[3]);
+            ty = mid_pred(mvy[0], mvy[1], mvy[3]);
+            break;
+        case 0x8:
+            tx = mid_pred(mvx[0], mvx[1], mvx[2]);
+            ty = mid_pred(mvy[0], mvy[1], mvy[2]);
+            break;
+        }
+    } else if(count[idx] == 2) {
+        int t1 = 0, t2 = 0;
+        for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;}
+        for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
+        tx = (mvx[t1] + mvx[t2]) / 2;
+        ty = (mvy[t1] + mvy[t2]) / 2;
+    } else {
+        s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+        s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+        return; //no need to do MC for inter blocks
+    }
+
+    s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
+    s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
+    uvmx = (tx + ((tx&3) == 3)) >> 1;
+    uvmy = (ty + ((ty&3) == 3)) >> 1;
+    if(v->fastuvmc) {
+        uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
+        uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
+    }
+
+    uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
+    uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
+
+    if(v->profile != PROFILE_ADVANCED){
+        uvsrc_x = av_clip(uvsrc_x,  -8, s->mb_width  *  8);
+        uvsrc_y = av_clip(uvsrc_y,  -8, s->mb_height *  8);
+    }else{
+        uvsrc_x = av_clip(uvsrc_x,  -8, s->avctx->coded_width  >> 1);
+        uvsrc_y = av_clip(uvsrc_y,  -8, s->avctx->coded_height >> 1);
+    }
+
+    srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x;
+    srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x;
+    if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP)
+       || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9
+       || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){
+        ff_emulated_edge_mc(s->edge_emu_buffer     , srcU, s->uvlinesize, 8+1, 8+1,
+                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
+        ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1,
+                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
+        srcU = s->edge_emu_buffer;
+        srcV = s->edge_emu_buffer + 16;
+
+        /* if we deal with range reduction we need to scale source blocks */
+        if(v->rangeredfrm) {
+            int i, j;
+            uint8_t *src, *src2;
+
+            src = srcU; src2 = srcV;
+            for(j = 0; j < 9; j++) {
+                for(i = 0; i < 9; i++) {
+                    src[i] = ((src[i] - 128) >> 1) + 128;
+                    src2[i] = ((src2[i] - 128) >> 1) + 128;
+                }
+                src += s->uvlinesize;
+                src2 += s->uvlinesize;
+            }
+        }
+        /* if we deal with intensity compensation we need to scale source blocks */
+        if(v->mv_mode == MV_PMODE_INTENSITY_COMP) {
+            int i, j;
+            uint8_t *src, *src2;
+
+            src = srcU; src2 = srcV;
+            for(j = 0; j < 9; j++) {
+                for(i = 0; i < 9; i++) {
+                    src[i] = v->lutuv[src[i]];
+                    src2[i] = v->lutuv[src2[i]];
+                }
+                src += s->uvlinesize;
+                src2 += s->uvlinesize;
+            }
+        }
+    }
+
+    /* Chroma MC always uses qpel bilinear */
+    uvmx = (uvmx&3)<<1;
+    uvmy = (uvmy&3)<<1;
+    if(!v->rnd){
+        dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+        dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+    }else{
+        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+        dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+    }
+}
+
+/***********************************************************************/
+/**
+ * @defgroup vc1block VC-1 Block-level functions
+ * @see 7.1.4, p91 and 8.1.1.7, p(1)04
+ * @{
+ */
+
+/**
+ * @def GET_MQUANT
+ * @brief Get macroblock-level quantizer scale
+ */
+#define GET_MQUANT()                                           \
+  if (v->dquantfrm)                                            \
+  {                                                            \
+    int edges = 0;                                             \
+    if (v->dqprofile == DQPROFILE_ALL_MBS)                     \
+    {                                                          \
+      if (v->dqbilevel)                                        \
+      {                                                        \
+        mquant = (get_bits1(gb)) ? v->altpq : v->pq;           \
+      }                                                        \
+      else                                                     \
+      {                                                        \
+        mqdiff = get_bits(gb, 3);                              \
+        if (mqdiff != 7) mquant = v->pq + mqdiff;              \
+        else mquant = get_bits(gb, 5);                         \
+      }                                                        \
+    }                                                          \
+    if(v->dqprofile == DQPROFILE_SINGLE_EDGE)                  \
+        edges = 1 << v->dqsbedge;                              \
+    else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES)            \
+        edges = (3 << v->dqsbedge) % 15;                       \
+    else if(v->dqprofile == DQPROFILE_FOUR_EDGES)              \
+        edges = 15;                                            \
+    if((edges&1) && !s->mb_x)                                  \
+        mquant = v->altpq;                                     \
+    if((edges&2) && s->first_slice_line)                       \
+        mquant = v->altpq;                                     \
+    if((edges&4) && s->mb_x == (s->mb_width - 1))              \
+        mquant = v->altpq;                                     \
+    if((edges&8) && s->mb_y == (s->mb_height - 1))             \
+        mquant = v->altpq;                                     \
+  }
+
+/**
+ * @def GET_MVDATA(_dmv_x, _dmv_y)
+ * @brief Get MV differentials
+ * @see MVDATA decoding from 8.3.5.2, p(1)20
+ * @param _dmv_x Horizontal differential for decoded MV
+ * @param _dmv_y Vertical differential for decoded MV
+ */
+#define GET_MVDATA(_dmv_x, _dmv_y)                                  \
+  index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\
+                       VC1_MV_DIFF_VLC_BITS, 2);                    \
+  if (index > 36)                                                   \
+  {                                                                 \
+    mb_has_coeffs = 1;                                              \
+    index -= 37;                                                    \
+  }                                                                 \
+  else mb_has_coeffs = 0;                                           \
+  s->mb_intra = 0;                                                  \
+  if (!index) { _dmv_x = _dmv_y = 0; }                              \
+  else if (index == 35)                                             \
+  {                                                                 \
+    _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample);          \
+    _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample);          \
+  }                                                                 \
+  else if (index == 36)                                             \
+  {                                                                 \
+    _dmv_x = 0;                                                     \
+    _dmv_y = 0;                                                     \
+    s->mb_intra = 1;                                                \
+  }                                                                 \
+  else                                                              \
+  {                                                                 \
+    index1 = index%6;                                               \
+    if (!s->quarter_sample && index1 == 5) val = 1;                 \
+    else                                   val = 0;                 \
+    if(size_table[index1] - val > 0)                                \
+        val = get_bits(gb, size_table[index1] - val);               \
+    else                                   val = 0;                 \
+    sign = 0 - (val&1);                                             \
+    _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign;     \
+                                                                    \
+    index1 = index/6;                                               \
+    if (!s->quarter_sample && index1 == 5) val = 1;                 \
+    else                                   val = 0;                 \
+    if(size_table[index1] - val > 0)                                \
+        val = get_bits(gb, size_table[index1] - val);               \
+    else                                   val = 0;                 \
+    sign = 0 - (val&1);                                             \
+    _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign;     \
+  }
+
+/** Predict and set motion vector
+ */
+static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, int mv1, int r_x, int r_y, uint8_t* is_intra)
+{
+    int xy, wrap, off = 0;
+    int16_t *A, *B, *C;
+    int px, py;
+    int sum;
+
+    /* scale MV difference to be quad-pel */
+    dmv_x <<= 1 - s->quarter_sample;
+    dmv_y <<= 1 - s->quarter_sample;
+
+    wrap = s->b8_stride;
+    xy = s->block_index[n];
+
+    if(s->mb_intra){
+        s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
+        s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
+        s->current_picture.motion_val[1][xy][0] = 0;
+        s->current_picture.motion_val[1][xy][1] = 0;
+        if(mv1) { /* duplicate motion data for 1-MV block */
+            s->current_picture.motion_val[0][xy + 1][0] = 0;
+            s->current_picture.motion_val[0][xy + 1][1] = 0;
+            s->current_picture.motion_val[0][xy + wrap][0] = 0;
+            s->current_picture.motion_val[0][xy + wrap][1] = 0;
+            s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
+            s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
+            s->current_picture.motion_val[1][xy + 1][0] = 0;
+            s->current_picture.motion_val[1][xy + 1][1] = 0;
+            s->current_picture.motion_val[1][xy + wrap][0] = 0;
+            s->current_picture.motion_val[1][xy + wrap][1] = 0;
+            s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
+            s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
+        }
+        return;
+    }
+
+    C = s->current_picture.motion_val[0][xy - 1];
+    A = s->current_picture.motion_val[0][xy - wrap];
+    if(mv1)
+        off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2;
+    else {
+        //in 4-MV mode different blocks have different B predictor position
+        switch(n){
+        case 0:
+            off = (s->mb_x > 0) ? -1 : 1;
+            break;
+        case 1:
+            off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1;
+            break;
+        case 2:
+            off = 1;
+            break;
+        case 3:
+            off = -1;
+        }
+    }
+    B = s->current_picture.motion_val[0][xy - wrap + off];
+
+    if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds
+        if(s->mb_width == 1) {
+            px = A[0];
+            py = A[1];
+        } else {
+            px = mid_pred(A[0], B[0], C[0]);
+            py = mid_pred(A[1], B[1], C[1]);
+        }
+    } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds
+        px = C[0];
+        py = C[1];
+    } else {
+        px = py = 0;
+    }
+    /* Pullback MV as specified in 8.3.5.3.4 */
+    {
+        int qx, qy, X, Y;
+        qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0);
+        qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0);
+        X = (s->mb_width << 6) - 4;
+        Y = (s->mb_height << 6) - 4;
+        if(mv1) {
+            if(qx + px < -60) px = -60 - qx;
+            if(qy + py < -60) py = -60 - qy;
+        } else {
+            if(qx + px < -28) px = -28 - qx;
+            if(qy + py < -28) py = -28 - qy;
+        }
+        if(qx + px > X) px = X - qx;
+        if(qy + py > Y) py = Y - qy;
+    }
+    /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
+    if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) {
+        if(is_intra[xy - wrap])
+            sum = FFABS(px) + FFABS(py);
+        else
+            sum = FFABS(px - A[0]) + FFABS(py - A[1]);
+        if(sum > 32) {
+            if(get_bits1(&s->gb)) {
+                px = A[0];
+                py = A[1];
+            } else {
+                px = C[0];
+                py = C[1];
+            }
+        } else {
+            if(is_intra[xy - 1])
+                sum = FFABS(px) + FFABS(py);
+            else
+                sum = FFABS(px - C[0]) + FFABS(py - C[1]);
+            if(sum > 32) {
+                if(get_bits1(&s->gb)) {
+                    px = A[0];
+                    py = A[1];
+                } else {
+                    px = C[0];
+                    py = C[1];
+                }
+            }
+        }
+    }
+    /* store MV using signed modulus of MV range defined in 4.11 */
+    s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x;
+    s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y;
+    if(mv1) { /* duplicate motion data for 1-MV block */
+        s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0];
+        s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1];
+        s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0];
+        s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1];
+        s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0];
+        s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1];
+    }
+}
+
+/** Motion compensation for direct or interpolated blocks in B-frames
+ */
+static void vc1_interp_mc(VC1Context *v)
+{
+    MpegEncContext *s = &v->s;
+    DSPContext *dsp = &v->s.dsp;
+    uint8_t *srcY, *srcU, *srcV;
+    int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y;
+
+    if(!v->s.next_picture.data[0])return;
+
+    mx = s->mv[1][0][0];
+    my = s->mv[1][0][1];
+    uvmx = (mx + ((mx & 3) == 3)) >> 1;
+    uvmy = (my + ((my & 3) == 3)) >> 1;
+    if(v->fastuvmc) {
+        uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
+        uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
+    }
+    srcY = s->next_picture.data[0];
+    srcU = s->next_picture.data[1];
+    srcV = s->next_picture.data[2];
+
+    src_x = s->mb_x * 16 + (mx >> 2);
+    src_y = s->mb_y * 16 + (my >> 2);
+    uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
+    uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
+
+    if(v->profile != PROFILE_ADVANCED){
+        src_x   = av_clip(  src_x, -16, s->mb_width  * 16);
+        src_y   = av_clip(  src_y, -16, s->mb_height * 16);
+        uvsrc_x = av_clip(uvsrc_x,  -8, s->mb_width  *  8);
+        uvsrc_y = av_clip(uvsrc_y,  -8, s->mb_height *  8);
+    }else{
+        src_x   = av_clip(  src_x, -17, s->avctx->coded_width);
+        src_y   = av_clip(  src_y, -18, s->avctx->coded_height + 1);
+        uvsrc_x = av_clip(uvsrc_x,  -8, s->avctx->coded_width  >> 1);
+        uvsrc_y = av_clip(uvsrc_y,  -8, s->avctx->coded_height >> 1);
+    }
+
+    srcY += src_y * s->linesize + src_x;
+    srcU += uvsrc_y * s->uvlinesize + uvsrc_x;
+    srcV += uvsrc_y * s->uvlinesize + uvsrc_x;
+
+    /* for grayscale we should not try to read from unknown area */
+    if(s->flags & CODEC_FLAG_GRAY) {
+        srcU = s->edge_emu_buffer + 18 * s->linesize;
+        srcV = s->edge_emu_buffer + 18 * s->linesize;
+    }
+
+    if(v->rangeredfrm
+       || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
+       || (unsigned)src_y > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
+        uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
+
+        srcY -= s->mspel * (1 + s->linesize);
+        ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2,
+                            src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos);
+        srcY = s->edge_emu_buffer;
+        ff_emulated_edge_mc(uvbuf     , srcU, s->uvlinesize, 8+1, 8+1,
+                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
+        ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1,
+                            uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1);
+        srcU = uvbuf;
+        srcV = uvbuf + 16;
+        /* if we deal with range reduction we need to scale source blocks */
+        if(v->rangeredfrm) {
+            int i, j;
+            uint8_t *src, *src2;
+
+            src = srcY;
+            for(j = 0; j < 17 + s->mspel*2; j++) {
+                for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128;
+                src += s->linesize;
+            }
+            src = srcU; src2 = srcV;
+            for(j = 0; j < 9; j++) {
+                for(i = 0; i < 9; i++) {
+                    src[i] = ((src[i] - 128) >> 1) + 128;
+                    src2[i] = ((src2[i] - 128) >> 1) + 128;
+                }
+                src += s->uvlinesize;
+                src2 += s->uvlinesize;
+            }
+        }
+        srcY += s->mspel * (1 + s->linesize);
+    }
+
+    if(s->mspel) {
+        dxy = ((my & 3) << 2) | (mx & 3);
+        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0]    , srcY    , s->linesize, v->rnd);
+        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd);
+        srcY += s->linesize * 8;
+        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize    , srcY    , s->linesize, v->rnd);
+        dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd);
+    } else { // hpel mc
+        dxy = (my & 2) | ((mx & 2) >> 1);
+
+        if(!v->rnd)
+            dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
+        else
+            dsp->avg_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16);
+    }
+
+    if(s->flags & CODEC_FLAG_GRAY) return;
+    /* Chroma MC always uses qpel blilinear */
+    uvmx = (uvmx&3)<<1;
+    uvmy = (uvmy&3)<<1;
+    if(!v->rnd){
+        dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+        dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+    }else{
+        dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy);
+        dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy);
+    }
+}
+
+static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
+{
+    int n = bfrac;
+
+#if B_FRACTION_DEN==256
+    if(inv)
+        n -= 256;
+    if(!qs)
+        return 2 * ((value * n + 255) >> 9);
+    return (value * n + 128) >> 8;
+#else
+    if(inv)
+        n -= B_FRACTION_DEN;
+    if(!qs)
+        return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
+    return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
+#endif
+}
+
+/** Reconstruct motion vector for B-frame and do motion compensation
+ */
+static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
+{
+    if(v->use_ic) {
+        v->mv_mode2 = v->mv_mode;
+        v->mv_mode = MV_PMODE_INTENSITY_COMP;
+    }
+    if(direct) {
+        vc1_mc_1mv(v, 0);
+        vc1_interp_mc(v);
+        if(v->use_ic) v->mv_mode = v->mv_mode2;
+        return;
+    }
+    if(mode == BMV_TYPE_INTERPOLATED) {
+        vc1_mc_1mv(v, 0);
+        vc1_interp_mc(v);
+        if(v->use_ic) v->mv_mode = v->mv_mode2;
+        return;
+    }
+
+    if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2;
+    vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD));
+    if(v->use_ic) v->mv_mode = v->mv_mode2;
+}
+
+static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype)
+{
+    MpegEncContext *s = &v->s;
+    int xy, wrap, off = 0;
+    int16_t *A, *B, *C;
+    int px, py;
+    int sum;
+    int r_x, r_y;
+    const uint8_t *is_intra = v->mb_type[0];
+
+    r_x = v->range_x;
+    r_y = v->range_y;
+    /* scale MV difference to be quad-pel */
+    dmv_x[0] <<= 1 - s->quarter_sample;
+    dmv_y[0] <<= 1 - s->quarter_sample;
+    dmv_x[1] <<= 1 - s->quarter_sample;
+    dmv_y[1] <<= 1 - s->quarter_sample;
+
+    wrap = s->b8_stride;
+    xy = s->block_index[0];
+
+    if(s->mb_intra) {
+        s->current_picture.motion_val[0][xy][0] =
+        s->current_picture.motion_val[0][xy][1] =
+        s->current_picture.motion_val[1][xy][0] =
+        s->current_picture.motion_val[1][xy][1] = 0;
+        return;
+    }
+    s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample);
+    s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample);
+    s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample);
+    s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample);
+
+    /* Pullback predicted motion vectors as specified in 8.4.5.4 */
+    s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width  << 6) - 4 - (s->mb_x << 6));
+    s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
+    s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width  << 6) - 4 - (s->mb_x << 6));
+    s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6));
+    if(direct) {
+        s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
+        s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
+        s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
+        s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
+        return;
+    }
+
+    if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
+        C = s->current_picture.motion_val[0][xy - 2];
+        A = s->current_picture.motion_val[0][xy - wrap*2];
+        off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
+        B = s->current_picture.motion_val[0][xy - wrap*2 + off];
+
+        if(!s->mb_x) C[0] = C[1] = 0;
+        if(!s->first_slice_line) { // predictor A is not out of bounds
+            if(s->mb_width == 1) {
+                px = A[0];
+                py = A[1];
+            } else {
+                px = mid_pred(A[0], B[0], C[0]);
+                py = mid_pred(A[1], B[1], C[1]);
+            }
+        } else if(s->mb_x) { // predictor C is not out of bounds
+            px = C[0];
+            py = C[1];
+        } else {
+            px = py = 0;
+        }
+        /* Pullback MV as specified in 8.3.5.3.4 */
+        {
+            int qx, qy, X, Y;
+            if(v->profile < PROFILE_ADVANCED) {
+                qx = (s->mb_x << 5);
+                qy = (s->mb_y << 5);
+                X = (s->mb_width << 5) - 4;
+                Y = (s->mb_height << 5) - 4;
+                if(qx + px < -28) px = -28 - qx;
+                if(qy + py < -28) py = -28 - qy;
+                if(qx + px > X) px = X - qx;
+                if(qy + py > Y) py = Y - qy;
+            } else {
+                qx = (s->mb_x << 6);
+                qy = (s->mb_y << 6);
+                X = (s->mb_width << 6) - 4;
+                Y = (s->mb_height << 6) - 4;
+                if(qx + px < -60) px = -60 - qx;
+                if(qy + py < -60) py = -60 - qy;
+                if(qx + px > X) px = X - qx;
+                if(qy + py > Y) py = Y - qy;
+            }
+        }
+        /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
+        if(0 && !s->first_slice_line && s->mb_x) {
+            if(is_intra[xy - wrap])
+                sum = FFABS(px) + FFABS(py);
+            else
+                sum = FFABS(px - A[0]) + FFABS(py - A[1]);
+            if(sum > 32) {
+                if(get_bits1(&s->gb)) {
+                    px = A[0];
+                    py = A[1];
+                } else {
+                    px = C[0];
+                    py = C[1];
+                }
+            } else {
+                if(is_intra[xy - 2])
+                    sum = FFABS(px) + FFABS(py);
+                else
+                    sum = FFABS(px - C[0]) + FFABS(py - C[1]);
+                if(sum > 32) {
+                    if(get_bits1(&s->gb)) {
+                        px = A[0];
+                        py = A[1];
+                    } else {
+                        px = C[0];
+                        py = C[1];
+                    }
+                }
+            }
+        }
+        /* store MV using signed modulus of MV range defined in 4.11 */
+        s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x;
+        s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y;
+    }
+    if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) {
+        C = s->current_picture.motion_val[1][xy - 2];
+        A = s->current_picture.motion_val[1][xy - wrap*2];
+        off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2;
+        B = s->current_picture.motion_val[1][xy - wrap*2 + off];
+
+        if(!s->mb_x) C[0] = C[1] = 0;
+        if(!s->first_slice_line) { // predictor A is not out of bounds
+            if(s->mb_width == 1) {
+                px = A[0];
+                py = A[1];
+            } else {
+                px = mid_pred(A[0], B[0], C[0]);
+                py = mid_pred(A[1], B[1], C[1]);
+            }
+        } else if(s->mb_x) { // predictor C is not out of bounds
+            px = C[0];
+            py = C[1];
+        } else {
+            px = py = 0;
+        }
+        /* Pullback MV as specified in 8.3.5.3.4 */
+        {
+            int qx, qy, X, Y;
+            if(v->profile < PROFILE_ADVANCED) {
+                qx = (s->mb_x << 5);
+                qy = (s->mb_y << 5);
+                X = (s->mb_width << 5) - 4;
+                Y = (s->mb_height << 5) - 4;
+                if(qx + px < -28) px = -28 - qx;
+                if(qy + py < -28) py = -28 - qy;
+                if(qx + px > X) px = X - qx;
+                if(qy + py > Y) py = Y - qy;
+            } else {
+                qx = (s->mb_x << 6);
+                qy = (s->mb_y << 6);
+                X = (s->mb_width << 6) - 4;
+                Y = (s->mb_height << 6) - 4;
+                if(qx + px < -60) px = -60 - qx;
+                if(qy + py < -60) py = -60 - qy;
+                if(qx + px > X) px = X - qx;
+                if(qy + py > Y) py = Y - qy;
+            }
+        }
+        /* Calculate hybrid prediction as specified in 8.3.5.3.5 */
+        if(0 && !s->first_slice_line && s->mb_x) {
+            if(is_intra[xy - wrap])
+                sum = FFABS(px) + FFABS(py);
+            else
+                sum = FFABS(px - A[0]) + FFABS(py - A[1]);
+            if(sum > 32) {
+                if(get_bits1(&s->gb)) {
+                    px = A[0];
+                    py = A[1];
+                } else {
+                    px = C[0];
+                    py = C[1];
+                }
+            } else {
+                if(is_intra[xy - 2])
+                    sum = FFABS(px) + FFABS(py);
+                else
+                    sum = FFABS(px - C[0]) + FFABS(py - C[1]);
+                if(sum > 32) {
+                    if(get_bits1(&s->gb)) {
+                        px = A[0];
+                        py = A[1];
+                    } else {
+                        px = C[0];
+                        py = C[1];
+                    }
+                }
+            }
+        }
+        /* store MV using signed modulus of MV range defined in 4.11 */
+
+        s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x;
+        s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y;
+    }
+    s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0];
+    s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1];
+    s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0];
+    s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1];
+}
+
+/** Get predicted DC value for I-frames only
+ * prediction dir: left=0, top=1
+ * @param s MpegEncContext
+ * @param overlap flag indicating that overlap filtering is used
+ * @param pq integer part of picture quantizer
+ * @param[in] n block index in the current MB
+ * @param dc_val_ptr Pointer to DC predictor
+ * @param dir_ptr Prediction direction for use in AC prediction
+ */
+static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
+                              int16_t **dc_val_ptr, int *dir_ptr)
+{
+    int a, b, c, wrap, pred, scale;
+    int16_t *dc_val;
+    static const uint16_t dcpred[32] = {
+    -1, 1024,  512,  341,  256,  205,  171,  146,  128,
+         114,  102,   93,   85,   79,   73,   68,   64,
+          60,   57,   54,   51,   49,   47,   45,   43,
+          41,   39,   38,   37,   35,   34,   33
+    };
+
+    /* find prediction - wmv3_dc_scale always used here in fact */
+    if (n < 4)     scale = s->y_dc_scale;
+    else           scale = s->c_dc_scale;
+
+    wrap = s->block_wrap[n];
+    dc_val= s->dc_val[0] + s->block_index[n];
+
+    /* B A
+     * C X
+     */
+    c = dc_val[ - 1];
+    b = dc_val[ - 1 - wrap];
+    a = dc_val[ - wrap];
+
+    if (pq < 9 || !overlap)
+    {
+        /* Set outer values */
+        if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale];
+        if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale];
+    }
+    else
+    {
+        /* Set outer values */
+        if (s->first_slice_line && (n!=2 && n!=3)) b=a=0;
+        if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0;
+    }
+
+    if (abs(a - b) <= abs(b - c)) {
+        pred = c;
+        *dir_ptr = 1;//left
+    } else {
+        pred = a;
+        *dir_ptr = 0;//top
+    }
+
+    /* update predictor */
+    *dc_val_ptr = &dc_val[0];
+    return pred;
+}
+
+
+/** Get predicted DC value
+ * prediction dir: left=0, top=1
+ * @param s MpegEncContext
+ * @param overlap flag indicating that overlap filtering is used
+ * @param pq integer part of picture quantizer
+ * @param[in] n block index in the current MB
+ * @param a_avail flag indicating top block availability
+ * @param c_avail flag indicating left block availability
+ * @param dc_val_ptr Pointer to DC predictor
+ * @param dir_ptr Prediction direction for use in AC prediction
+ */
+static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
+                              int a_avail, int c_avail,
+                              int16_t **dc_val_ptr, int *dir_ptr)
+{
+    int a, b, c, wrap, pred;
+    int16_t *dc_val;
+    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+    int q1, q2 = 0;
+
+    wrap = s->block_wrap[n];
+    dc_val= s->dc_val[0] + s->block_index[n];
+
+    /* B A
+     * C X
+     */
+    c = dc_val[ - 1];
+    b = dc_val[ - 1 - wrap];
+    a = dc_val[ - wrap];
+    /* scale predictors if needed */
+    q1 = s->current_picture.qscale_table[mb_pos];
+    if(c_avail && (n!= 1 && n!=3)) {
+        q2 = s->current_picture.qscale_table[mb_pos - 1];
+        if(q2 && q2 != q1)
+            c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
+    }
+    if(a_avail && (n!= 2 && n!=3)) {
+        q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+        if(q2 && q2 != q1)
+            a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
+    }
+    if(a_avail && c_avail && (n!=3)) {
+        int off = mb_pos;
+        if(n != 1) off--;
+        if(n != 2) off -= s->mb_stride;
+        q2 = s->current_picture.qscale_table[off];
+        if(q2 && q2 != q1)
+            b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18;
+    }
+
+    if(a_avail && c_avail) {
+        if(abs(a - b) <= abs(b - c)) {
+            pred = c;
+            *dir_ptr = 1;//left
+        } else {
+            pred = a;
+            *dir_ptr = 0;//top
+        }
+    } else if(a_avail) {
+        pred = a;
+        *dir_ptr = 0;//top
+    } else if(c_avail) {
+        pred = c;
+        *dir_ptr = 1;//left
+    } else {
+        pred = 0;
+        *dir_ptr = 1;//left
+    }
+
+    /* update predictor */
+    *dc_val_ptr = &dc_val[0];
+    return pred;
+}
+
+/** @} */ // Block group
+
+/**
+ * @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles
+ * @see 7.1.4, p91 and 8.1.1.7, p(1)04
+ * @{
+ */
+
+static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
+{
+    int xy, wrap, pred, a, b, c;
+
+    xy = s->block_index[n];
+    wrap = s->b8_stride;
+
+    /* B C
+     * A X
+     */
+    a = s->coded_block[xy - 1       ];
+    b = s->coded_block[xy - 1 - wrap];
+    c = s->coded_block[xy     - wrap];
+
+    if (b == c) {
+        pred = a;
+    } else {
+        pred = c;
+    }
+
+    /* store value */
+    *coded_block_ptr = &s->coded_block[xy];
+
+    return pred;
+}
+
+/**
+ * Decode one AC coefficient
+ * @param v The VC1 context
+ * @param last Last coefficient
+ * @param skip How much zero coefficients to skip
+ * @param value Decoded AC coefficient value
+ * @param codingset set of VLC to decode data
+ * @see 8.1.3.4
+ */
+static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset)
+{
+    GetBitContext *gb = &v->s.gb;
+    int index, escape, run = 0, level = 0, lst = 0;
+
+    index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
+    if (index != vc1_ac_sizes[codingset] - 1) {
+        run = vc1_index_decode_table[codingset][index][0];
+        level = vc1_index_decode_table[codingset][index][1];
+        lst = index >= vc1_last_decode_table[codingset];
+        if(get_bits1(gb))
+            level = -level;
+    } else {
+        escape = decode210(gb);
+        if (escape != 2) {
+            index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
+            run = vc1_index_decode_table[codingset][index][0];
+            level = vc1_index_decode_table[codingset][index][1];
+            lst = index >= vc1_last_decode_table[codingset];
+            if(escape == 0) {
+                if(lst)
+                    level += vc1_last_delta_level_table[codingset][run];
+                else
+                    level += vc1_delta_level_table[codingset][run];
+            } else {
+                if(lst)
+                    run += vc1_last_delta_run_table[codingset][level] + 1;
+                else
+                    run += vc1_delta_run_table[codingset][level] + 1;
+            }
+            if(get_bits1(gb))
+                level = -level;
+        } else {
+            int sign;
+            lst = get_bits1(gb);
+            if(v->s.esc3_level_length == 0) {
+                if(v->pq < 8 || v->dquantfrm) { // table 59
+                    v->s.esc3_level_length = get_bits(gb, 3);
+                    if(!v->s.esc3_level_length)
+                        v->s.esc3_level_length = get_bits(gb, 2) + 8;
+                } else { //table 60
+                    v->s.esc3_level_length = get_unary(gb, 1, 6) + 2;
+                }
+                v->s.esc3_run_length = 3 + get_bits(gb, 2);
+            }
+            run = get_bits(gb, v->s.esc3_run_length);
+            sign = get_bits1(gb);
+            level = get_bits(gb, v->s.esc3_level_length);
+            if(sign)
+                level = -level;
+        }
+    }
+
+    *last = lst;
+    *skip = run;
+    *value = level;
+}
+
+/** Decode intra block in intra frames - should be faster than decode_intra_block
+ * @param v VC1Context
+ * @param block block to decode
+ * @param[in] n subblock index
+ * @param coded are AC coeffs present or not
+ * @param codingset set of VLC to decode data
+ */
+static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset)
+{
+    GetBitContext *gb = &v->s.gb;
+    MpegEncContext *s = &v->s;
+    int dc_pred_dir = 0; /* Direction of the DC prediction used */
+    int i;
+    int16_t *dc_val;
+    int16_t *ac_val, *ac_val2;
+    int dcdiff;
+
+    /* Get DC differential */
+    if (n < 4) {
+        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+    } else {
+        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+    }
+    if (dcdiff < 0){
+        av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
+        return -1;
+    }
+    if (dcdiff)
+    {
+        if (dcdiff == 119 /* ESC index value */)
+        {
+            /* TODO: Optimize */
+            if (v->pq == 1) dcdiff = get_bits(gb, 10);
+            else if (v->pq == 2) dcdiff = get_bits(gb, 9);
+            else dcdiff = get_bits(gb, 8);
+        }
+        else
+        {
+            if (v->pq == 1)
+                dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
+            else if (v->pq == 2)
+                dcdiff = (dcdiff<<1) + get_bits1(gb)   - 1;
+        }
+        if (get_bits1(gb))
+            dcdiff = -dcdiff;
+    }
+
+    /* Prediction */
+    dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir);
+    *dc_val = dcdiff;
+
+    /* Store the quantized DC coeff, used for prediction */
+    if (n < 4) {
+        block[0] = dcdiff * s->y_dc_scale;
+    } else {
+        block[0] = dcdiff * s->c_dc_scale;
+    }
+    /* Skip ? */
+    if (!coded) {
+        goto not_coded;
+    }
+
+    //AC Decoding
+    i = 1;
+
+    {
+        int last = 0, skip, value;
+        const int8_t *zz_table;
+        int scale;
+        int k;
+
+        scale = v->pq * 2 + v->halfpq;
+
+        if(v->s.ac_pred) {
+            if(!dc_pred_dir)
+                zz_table = wmv1_scantable[2];
+            else
+                zz_table = wmv1_scantable[3];
+        } else
+            zz_table = wmv1_scantable[1];
+
+        ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+        ac_val2 = ac_val;
+        if(dc_pred_dir) //left
+            ac_val -= 16;
+        else //top
+            ac_val -= 16 * s->block_wrap[n];
+
+        while (!last) {
+            vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
+            i += skip;
+            if(i > 63)
+                break;
+            block[zz_table[i++]] = value;
+        }
+
+        /* apply AC prediction if needed */
+        if(s->ac_pred) {
+            if(dc_pred_dir) { //left
+                for(k = 1; k < 8; k++)
+                    block[k << 3] += ac_val[k];
+            } else { //top
+                for(k = 1; k < 8; k++)
+                    block[k] += ac_val[k + 8];
+            }
+        }
+        /* save AC coeffs for further prediction */
+        for(k = 1; k < 8; k++) {
+            ac_val2[k] = block[k << 3];
+            ac_val2[k + 8] = block[k];
+        }
+
+        /* scale AC coeffs */
+        for(k = 1; k < 64; k++)
+            if(block[k]) {
+                block[k] *= scale;
+                if(!v->pquantizer)
+                    block[k] += (block[k] < 0) ? -v->pq : v->pq;
+            }
+
+        if(s->ac_pred) i = 63;
+    }
+
+not_coded:
+    if(!coded) {
+        int k, scale;
+        ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+        ac_val2 = ac_val;
+
+        i = 0;
+        scale = v->pq * 2 + v->halfpq;
+        memset(ac_val2, 0, 16 * 2);
+        if(dc_pred_dir) {//left
+            ac_val -= 16;
+            if(s->ac_pred)
+                memcpy(ac_val2, ac_val, 8 * 2);
+        } else {//top
+            ac_val -= 16 * s->block_wrap[n];
+            if(s->ac_pred)
+                memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
+        }
+
+        /* apply AC prediction if needed */
+        if(s->ac_pred) {
+            if(dc_pred_dir) { //left
+                for(k = 1; k < 8; k++) {
+                    block[k << 3] = ac_val[k] * scale;
+                    if(!v->pquantizer && block[k << 3])
+                        block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq;
+                }
+            } else { //top
+                for(k = 1; k < 8; k++) {
+                    block[k] = ac_val[k + 8] * scale;
+                    if(!v->pquantizer && block[k])
+                        block[k] += (block[k] < 0) ? -v->pq : v->pq;
+                }
+            }
+            i = 63;
+        }
+    }
+    s->block_last_index[n] = i;
+
+    return 0;
+}
+
+/** Decode intra block in intra frames - should be faster than decode_intra_block
+ * @param v VC1Context
+ * @param block block to decode
+ * @param[in] n subblock number
+ * @param coded are AC coeffs present or not
+ * @param codingset set of VLC to decode data
+ * @param mquant quantizer value for this macroblock
+ */
+static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant)
+{
+    GetBitContext *gb = &v->s.gb;
+    MpegEncContext *s = &v->s;
+    int dc_pred_dir = 0; /* Direction of the DC prediction used */
+    int i;
+    int16_t *dc_val;
+    int16_t *ac_val, *ac_val2;
+    int dcdiff;
+    int a_avail = v->a_avail, c_avail = v->c_avail;
+    int use_pred = s->ac_pred;
+    int scale;
+    int q1, q2 = 0;
+    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+
+    /* Get DC differential */
+    if (n < 4) {
+        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+    } else {
+        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+    }
+    if (dcdiff < 0){
+        av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
+        return -1;
+    }
+    if (dcdiff)
+    {
+        if (dcdiff == 119 /* ESC index value */)
+        {
+            /* TODO: Optimize */
+            if (mquant == 1) dcdiff = get_bits(gb, 10);
+            else if (mquant == 2) dcdiff = get_bits(gb, 9);
+            else dcdiff = get_bits(gb, 8);
+        }
+        else
+        {
+            if (mquant == 1)
+                dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
+            else if (mquant == 2)
+                dcdiff = (dcdiff<<1) + get_bits1(gb)   - 1;
+        }
+        if (get_bits1(gb))
+            dcdiff = -dcdiff;
+    }
+
+    /* Prediction */
+    dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir);
+    *dc_val = dcdiff;
+
+    /* Store the quantized DC coeff, used for prediction */
+    if (n < 4) {
+        block[0] = dcdiff * s->y_dc_scale;
+    } else {
+        block[0] = dcdiff * s->c_dc_scale;
+    }
+
+    //AC Decoding
+    i = 1;
+
+    /* check if AC is needed at all */
+    if(!a_avail && !c_avail) use_pred = 0;
+    ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+    ac_val2 = ac_val;
+
+    scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0);
+
+    if(dc_pred_dir) //left
+        ac_val -= 16;
+    else //top
+        ac_val -= 16 * s->block_wrap[n];
+
+    q1 = s->current_picture.qscale_table[mb_pos];
+    if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
+    if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+    if(dc_pred_dir && n==1) q2 = q1;
+    if(!dc_pred_dir && n==2) q2 = q1;
+    if(n==3) q2 = q1;
+
+    if(coded) {
+        int last = 0, skip, value;
+        const int8_t *zz_table;
+        int k;
+
+        if(v->s.ac_pred) {
+            if(!dc_pred_dir)
+                zz_table = wmv1_scantable[2];
+            else
+                zz_table = wmv1_scantable[3];
+        } else
+            zz_table = wmv1_scantable[1];
+
+        while (!last) {
+            vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
+            i += skip;
+            if(i > 63)
+                break;
+            block[zz_table[i++]] = value;
+        }
+
+        /* apply AC prediction if needed */
+        if(use_pred) {
+            /* scale predictors if needed*/
+            if(q2 && q1!=q2) {
+                q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+                q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+
+                if(dc_pred_dir) { //left
+                    for(k = 1; k < 8; k++)
+                        block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                } else { //top
+                    for(k = 1; k < 8; k++)
+                        block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                }
+            } else {
+                if(dc_pred_dir) { //left
+                    for(k = 1; k < 8; k++)
+                        block[k << 3] += ac_val[k];
+                } else { //top
+                    for(k = 1; k < 8; k++)
+                        block[k] += ac_val[k + 8];
+                }
+            }
+        }
+        /* save AC coeffs for further prediction */
+        for(k = 1; k < 8; k++) {
+            ac_val2[k] = block[k << 3];
+            ac_val2[k + 8] = block[k];
+        }
+
+        /* scale AC coeffs */
+        for(k = 1; k < 64; k++)
+            if(block[k]) {
+                block[k] *= scale;
+                if(!v->pquantizer)
+                    block[k] += (block[k] < 0) ? -mquant : mquant;
+            }
+
+        if(use_pred) i = 63;
+    } else { // no AC coeffs
+        int k;
+
+        memset(ac_val2, 0, 16 * 2);
+        if(dc_pred_dir) {//left
+            if(use_pred) {
+                memcpy(ac_val2, ac_val, 8 * 2);
+                if(q2 && q1!=q2) {
+                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+                    for(k = 1; k < 8; k++)
+                        ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                }
+            }
+        } else {//top
+            if(use_pred) {
+                memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
+                if(q2 && q1!=q2) {
+                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+                    for(k = 1; k < 8; k++)
+                        ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                }
+            }
+        }
+
+        /* apply AC prediction if needed */
+        if(use_pred) {
+            if(dc_pred_dir) { //left
+                for(k = 1; k < 8; k++) {
+                    block[k << 3] = ac_val2[k] * scale;
+                    if(!v->pquantizer && block[k << 3])
+                        block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
+                }
+            } else { //top
+                for(k = 1; k < 8; k++) {
+                    block[k] = ac_val2[k + 8] * scale;
+                    if(!v->pquantizer && block[k])
+                        block[k] += (block[k] < 0) ? -mquant : mquant;
+                }
+            }
+            i = 63;
+        }
+    }
+    s->block_last_index[n] = i;
+
+    return 0;
+}
+
+/** Decode intra block in inter frames - more generic version than vc1_decode_i_block
+ * @param v VC1Context
+ * @param block block to decode
+ * @param[in] n subblock index
+ * @param coded are AC coeffs present or not
+ * @param mquant block quantizer
+ * @param codingset set of VLC to decode data
+ */
+static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset)
+{
+    GetBitContext *gb = &v->s.gb;
+    MpegEncContext *s = &v->s;
+    int dc_pred_dir = 0; /* Direction of the DC prediction used */
+    int i;
+    int16_t *dc_val;
+    int16_t *ac_val, *ac_val2;
+    int dcdiff;
+    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+    int a_avail = v->a_avail, c_avail = v->c_avail;
+    int use_pred = s->ac_pred;
+    int scale;
+    int q1, q2 = 0;
+
+    /* XXX: Guard against dumb values of mquant */
+    mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant );
+
+    /* Set DC scale - y and c use the same */
+    s->y_dc_scale = s->y_dc_scale_table[mquant];
+    s->c_dc_scale = s->c_dc_scale_table[mquant];
+
+    /* Get DC differential */
+    if (n < 4) {
+        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+    } else {
+        dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
+    }
+    if (dcdiff < 0){
+        av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n");
+        return -1;
+    }
+    if (dcdiff)
+    {
+        if (dcdiff == 119 /* ESC index value */)
+        {
+            /* TODO: Optimize */
+            if (mquant == 1) dcdiff = get_bits(gb, 10);
+            else if (mquant == 2) dcdiff = get_bits(gb, 9);
+            else dcdiff = get_bits(gb, 8);
+        }
+        else
+        {
+            if (mquant == 1)
+                dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3;
+            else if (mquant == 2)
+                dcdiff = (dcdiff<<1) + get_bits1(gb)   - 1;
+        }
+        if (get_bits1(gb))
+            dcdiff = -dcdiff;
+    }
+
+    /* Prediction */
+    dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir);
+    *dc_val = dcdiff;
+
+    /* Store the quantized DC coeff, used for prediction */
+
+    if (n < 4) {
+        block[0] = dcdiff * s->y_dc_scale;
+    } else {
+        block[0] = dcdiff * s->c_dc_scale;
+    }
+
+    //AC Decoding
+    i = 1;
+
+    /* check if AC is needed at all and adjust direction if needed */
+    if(!a_avail) dc_pred_dir = 1;
+    if(!c_avail) dc_pred_dir = 0;
+    if(!a_avail && !c_avail) use_pred = 0;
+    ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
+    ac_val2 = ac_val;
+
+    scale = mquant * 2 + v->halfpq;
+
+    if(dc_pred_dir) //left
+        ac_val -= 16;
+    else //top
+        ac_val -= 16 * s->block_wrap[n];
+
+    q1 = s->current_picture.qscale_table[mb_pos];
+    if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1];
+    if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride];
+    if(dc_pred_dir && n==1) q2 = q1;
+    if(!dc_pred_dir && n==2) q2 = q1;
+    if(n==3) q2 = q1;
+
+    if(coded) {
+        int last = 0, skip, value;
+        const int8_t *zz_table;
+        int k;
+
+        zz_table = wmv1_scantable[0];
+
+        while (!last) {
+            vc1_decode_ac_coeff(v, &last, &skip, &value, codingset);
+            i += skip;
+            if(i > 63)
+                break;
+            block[zz_table[i++]] = value;
+        }
+
+        /* apply AC prediction if needed */
+        if(use_pred) {
+            /* scale predictors if needed*/
+            if(q2 && q1!=q2) {
+                q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+                q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+
+                if(dc_pred_dir) { //left
+                    for(k = 1; k < 8; k++)
+                        block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                } else { //top
+                    for(k = 1; k < 8; k++)
+                        block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                }
+            } else {
+                if(dc_pred_dir) { //left
+                    for(k = 1; k < 8; k++)
+                        block[k << 3] += ac_val[k];
+                } else { //top
+                    for(k = 1; k < 8; k++)
+                        block[k] += ac_val[k + 8];
+                }
+            }
+        }
+        /* save AC coeffs for further prediction */
+        for(k = 1; k < 8; k++) {
+            ac_val2[k] = block[k << 3];
+            ac_val2[k + 8] = block[k];
+        }
+
+        /* scale AC coeffs */
+        for(k = 1; k < 64; k++)
+            if(block[k]) {
+                block[k] *= scale;
+                if(!v->pquantizer)
+                    block[k] += (block[k] < 0) ? -mquant : mquant;
+            }
+
+        if(use_pred) i = 63;
+    } else { // no AC coeffs
+        int k;
+
+        memset(ac_val2, 0, 16 * 2);
+        if(dc_pred_dir) {//left
+            if(use_pred) {
+                memcpy(ac_val2, ac_val, 8 * 2);
+                if(q2 && q1!=q2) {
+                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+                    for(k = 1; k < 8; k++)
+                        ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                }
+            }
+        } else {//top
+            if(use_pred) {
+                memcpy(ac_val2 + 8, ac_val + 8, 8 * 2);
+                if(q2 && q1!=q2) {
+                    q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1;
+                    q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1;
+                    for(k = 1; k < 8; k++)
+                        ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18;
+                }
+            }
+        }
+
+        /* apply AC prediction if needed */
+        if(use_pred) {
+            if(dc_pred_dir) { //left
+                for(k = 1; k < 8; k++) {
+                    block[k << 3] = ac_val2[k] * scale;
+                    if(!v->pquantizer && block[k << 3])
+                        block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant;
+                }
+            } else { //top
+                for(k = 1; k < 8; k++) {
+                    block[k] = ac_val2[k + 8] * scale;
+                    if(!v->pquantizer && block[k])
+                        block[k] += (block[k] < 0) ? -mquant : mquant;
+                }
+            }
+            i = 63;
+        }
+    }
+    s->block_last_index[n] = i;
+
+    return 0;
+}
+
+/** Decode P block
+ */
+static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block,
+                              uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left)
+{
+    MpegEncContext *s = &v->s;
+    GetBitContext *gb = &s->gb;
+    int i, j;
+    int subblkpat = 0;
+    int scale, off, idx, last, skip, value;
+    int ttblk = ttmb & 7;
+    int pat = 0;
+
+    if(ttmb == -1) {
+        ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)];
+    }
+    if(ttblk == TT_4X4) {
+        subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
+    }
+    if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) {
+        subblkpat = decode012(gb);
+        if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits
+        if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4;
+        if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8;
+    }
+    scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0);
+
+    // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT
+    if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) {
+        subblkpat = 2 - (ttblk == TT_8X4_TOP);
+        ttblk = TT_8X4;
+    }
+    if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) {
+        subblkpat = 2 - (ttblk == TT_4X8_LEFT);
+        ttblk = TT_4X8;
+    }
+    switch(ttblk) {
+    case TT_8X8:
+        pat = 0xF;
+        i = 0;
+        last = 0;
+        while (!last) {
+            vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+            i += skip;
+            if(i > 63)
+                break;
+            idx = wmv1_scantable[0][i++];
+            block[idx] = value * scale;
+            if(!v->pquantizer)
+                block[idx] += (block[idx] < 0) ? -mquant : mquant;
+        }
+        if(!skip_block){
+            s->dsp.vc1_inv_trans_8x8(block);
+            s->dsp.add_pixels_clamped(block, dst, linesize);
+            if(apply_filter && cbp_top  & 0xC)
+                s->dsp.vc1_v_loop_filter8(dst, linesize, v->pq);
+            if(apply_filter && cbp_left & 0xA)
+                s->dsp.vc1_h_loop_filter8(dst, linesize, v->pq);
+        }
+        break;
+    case TT_4X4:
+        pat = ~subblkpat & 0xF;
+        for(j = 0; j < 4; j++) {
+            last = subblkpat & (1 << (3 - j));
+            i = 0;
+            off = (j & 1) * 4 + (j & 2) * 16;
+            while (!last) {
+                vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+                i += skip;
+                if(i > 15)
+                    break;
+                idx = ff_vc1_simple_progressive_4x4_zz[i++];
+                block[idx + off] = value * scale;
+                if(!v->pquantizer)
+                    block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant;
+            }
+            if(!(subblkpat & (1 << (3 - j))) && !skip_block){
+                s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off);
+                if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2)))))
+                    s->dsp.vc1_v_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
+                if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1)))))
+                    s->dsp.vc1_h_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq);
+            }
+        }
+        break;
+    case TT_8X4:
+        pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF;
+        for(j = 0; j < 2; j++) {
+            last = subblkpat & (1 << (1 - j));
+            i = 0;
+            off = j * 32;
+            while (!last) {
+                vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+                i += skip;
+                if(i > 31)
+                    break;
+                idx = v->zz_8x4[i++]+off;
+                block[idx] = value * scale;
+                if(!v->pquantizer)
+                    block[idx] += (block[idx] < 0) ? -mquant : mquant;
+            }
+            if(!(subblkpat & (1 << (1 - j))) && !skip_block){
+                s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off);
+                if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC))
+                    s->dsp.vc1_v_loop_filter8(dst + j*4*linesize, linesize, v->pq);
+                if(apply_filter && cbp_left & (2 << j))
+                    s->dsp.vc1_h_loop_filter4(dst + j*4*linesize, linesize, v->pq);
+            }
+        }
+        break;
+    case TT_4X8:
+        pat = ~(subblkpat*5) & 0xF;
+        for(j = 0; j < 2; j++) {
+            last = subblkpat & (1 << (1 - j));
+            i = 0;
+            off = j * 4;
+            while (!last) {
+                vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2);
+                i += skip;
+                if(i > 31)
+                    break;
+                idx = v->zz_4x8[i++]+off;
+                block[idx] = value * scale;
+                if(!v->pquantizer)
+                    block[idx] += (block[idx] < 0) ? -mquant : mquant;
+            }
+            if(!(subblkpat & (1 << (1 - j))) && !skip_block){
+                s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off);
+                if(apply_filter && cbp_top & (2 << j))
+                    s->dsp.vc1_v_loop_filter4(dst + j*4, linesize, v->pq);
+                if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA))
+                    s->dsp.vc1_h_loop_filter8(dst + j*4, linesize, v->pq);
+            }
+        }
+        break;
+    }
+    return pat;
+}
+
+/** @} */ // Macroblock group
+
+static const int size_table  [6] = { 0, 2, 3, 4,  5,  8 };
+static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 };
+
+/** Decode one P-frame MB (in Simple/Main profile)
+ */
+static int vc1_decode_p_mb(VC1Context *v)
+{
+    MpegEncContext *s = &v->s;
+    GetBitContext *gb = &s->gb;
+    int i, j;
+    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+    int cbp; /* cbp decoding stuff */
+    int mqdiff, mquant; /* MB quantization */
+    int ttmb = v->ttfrm; /* MB Transform type */
+
+    int mb_has_coeffs = 1; /* last_flag */
+    int dmv_x, dmv_y; /* Differential MV components */
+    int index, index1; /* LUT indexes */
+    int val, sign; /* temp values */
+    int first_block = 1;
+    int dst_idx, off;
+    int skipped, fourmv;
+    int block_cbp = 0, pat;
+    int apply_loop_filter;
+
+    mquant = v->pq; /* Loosy initialization */
+
+    if (v->mv_type_is_raw)
+        fourmv = get_bits1(gb);
+    else
+        fourmv = v->mv_type_mb_plane[mb_pos];
+    if (v->skip_is_raw)
+        skipped = get_bits1(gb);
+    else
+        skipped = v->s.mbskip_table[mb_pos];
+
+    s->dsp.clear_blocks(s->block[0]);
+
+    apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY);
+    if (!fourmv) /* 1MV mode */
+    {
+        if (!skipped)
+        {
+            GET_MVDATA(dmv_x, dmv_y);
+
+            if (s->mb_intra) {
+                s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+                s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+            }
+            s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16;
+            vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]);
+
+            /* FIXME Set DC val for inter block ? */
+            if (s->mb_intra && !mb_has_coeffs)
+            {
+                GET_MQUANT();
+                s->ac_pred = get_bits1(gb);
+                cbp = 0;
+            }
+            else if (mb_has_coeffs)
+            {
+                if (s->mb_intra) s->ac_pred = get_bits1(gb);
+                cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+                GET_MQUANT();
+            }
+            else
+            {
+                mquant = v->pq;
+                cbp = 0;
+            }
+            s->current_picture.qscale_table[mb_pos] = mquant;
+
+            if (!v->ttmbf && !s->mb_intra && mb_has_coeffs)
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table,
+                                VC1_TTMB_VLC_BITS, 2);
+            if(!s->mb_intra) vc1_mc_1mv(v, 0);
+            dst_idx = 0;
+            for (i=0; i<6; i++)
+            {
+                s->dc_val[0][s->block_index[i]] = 0;
+                dst_idx += i >> 2;
+                val = ((cbp >> (5 - i)) & 1);
+                off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+                v->mb_type[0][s->block_index[i]] = s->mb_intra;
+                if(s->mb_intra) {
+                    /* check if prediction blocks A and C are available */
+                    v->a_avail = v->c_avail = 0;
+                    if(i == 2 || i == 3 || !s->first_slice_line)
+                        v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+                    if(i == 1 || i == 3 || s->mb_x)
+                        v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+                    vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
+                    if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
+                    s->dsp.vc1_inv_trans_8x8(s->block[i]);
+                    if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
+                    s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+                    if(v->pq >= 9 && v->overlap) {
+                        if(v->c_avail)
+                            s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+                        if(v->a_avail)
+                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+                    }
+                    if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
+                        int left_cbp, top_cbp;
+                        if(i & 4){
+                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
+                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
+                        }else{
+                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
+                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
+                        }
+                        if(left_cbp & 0xC)
+                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                        if(top_cbp  & 0xA)
+                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                    }
+                    block_cbp |= 0xF << (i << 2);
+                } else if(val) {
+                    int left_cbp = 0, top_cbp = 0, filter = 0;
+                    if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
+                        filter = 1;
+                        if(i & 4){
+                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
+                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
+                        }else{
+                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
+                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
+                        }
+                        if(left_cbp & 0xC)
+                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                        if(top_cbp  & 0xA)
+                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                    }
+                    pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
+                    block_cbp |= pat << (i << 2);
+                    if(!v->ttmbf && ttmb < 8) ttmb = -1;
+                    first_block = 0;
+                }
+            }
+        }
+        else //Skipped
+        {
+            s->mb_intra = 0;
+            for(i = 0; i < 6; i++) {
+                v->mb_type[0][s->block_index[i]] = 0;
+                s->dc_val[0][s->block_index[i]] = 0;
+            }
+            s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP;
+            s->current_picture.qscale_table[mb_pos] = 0;
+            vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]);
+            vc1_mc_1mv(v, 0);
+            return 0;
+        }
+    } //1MV mode
+    else //4MV mode
+    {
+        if (!skipped /* unskipped MB */)
+        {
+            int intra_count = 0, coded_inter = 0;
+            int is_intra[6], is_coded[6];
+            /* Get CBPCY */
+            cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+            for (i=0; i<6; i++)
+            {
+                val = ((cbp >> (5 - i)) & 1);
+                s->dc_val[0][s->block_index[i]] = 0;
+                s->mb_intra = 0;
+                if(i < 4) {
+                    dmv_x = dmv_y = 0;
+                    s->mb_intra = 0;
+                    mb_has_coeffs = 0;
+                    if(val) {
+                        GET_MVDATA(dmv_x, dmv_y);
+                    }
+                    vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]);
+                    if(!s->mb_intra) vc1_mc_4mv_luma(v, i);
+                    intra_count += s->mb_intra;
+                    is_intra[i] = s->mb_intra;
+                    is_coded[i] = mb_has_coeffs;
+                }
+                if(i&4){
+                    is_intra[i] = (intra_count >= 3);
+                    is_coded[i] = val;
+                }
+                if(i == 4) vc1_mc_4mv_chroma(v);
+                v->mb_type[0][s->block_index[i]] = is_intra[i];
+                if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i];
+            }
+            // if there are no coded blocks then don't do anything more
+            if(!intra_count && !coded_inter) return 0;
+            dst_idx = 0;
+            GET_MQUANT();
+            s->current_picture.qscale_table[mb_pos] = mquant;
+            /* test if block is intra and has pred */
+            {
+                int intrapred = 0;
+                for(i=0; i<6; i++)
+                    if(is_intra[i]) {
+                        if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]])
+                            || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) {
+                            intrapred = 1;
+                            break;
+                        }
+                    }
+                if(intrapred)s->ac_pred = get_bits1(gb);
+                else s->ac_pred = 0;
+            }
+            if (!v->ttmbf && coded_inter)
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+            for (i=0; i<6; i++)
+            {
+                dst_idx += i >> 2;
+                off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+                s->mb_intra = is_intra[i];
+                if (is_intra[i]) {
+                    /* check if prediction blocks A and C are available */
+                    v->a_avail = v->c_avail = 0;
+                    if(i == 2 || i == 3 || !s->first_slice_line)
+                        v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+                    if(i == 1 || i == 3 || s->mb_x)
+                        v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+                    vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset);
+                    if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
+                    s->dsp.vc1_inv_trans_8x8(s->block[i]);
+                    if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
+                    s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
+                    if(v->pq >= 9 && v->overlap) {
+                        if(v->c_avail)
+                            s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+                        if(v->a_avail)
+                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+                    }
+                    if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
+                        int left_cbp, top_cbp;
+                        if(i & 4){
+                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
+                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
+                        }else{
+                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
+                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
+                        }
+                        if(left_cbp & 0xC)
+                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                        if(top_cbp  & 0xA)
+                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                    }
+                    block_cbp |= 0xF << (i << 2);
+                } else if(is_coded[i]) {
+                    int left_cbp = 0, top_cbp = 0, filter = 0;
+                    if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){
+                        filter = 1;
+                        if(i & 4){
+                            left_cbp = v->cbp[s->mb_x - 1]            >> (i * 4);
+                            top_cbp  = v->cbp[s->mb_x - s->mb_stride] >> (i * 4);
+                        }else{
+                            left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1]           >> ((i+1)*4));
+                            top_cbp  = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4));
+                        }
+                        if(left_cbp & 0xC)
+                            s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                        if(top_cbp  & 0xA)
+                            s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq);
+                    }
+                    pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp);
+                    block_cbp |= pat << (i << 2);
+                    if(!v->ttmbf && ttmb < 8) ttmb = -1;
+                    first_block = 0;
+                }
+            }
+            return 0;
+        }
+        else //Skipped MB
+        {
+            s->mb_intra = 0;
+            s->current_picture.qscale_table[mb_pos] = 0;
+            for (i=0; i<6; i++) {
+                v->mb_type[0][s->block_index[i]] = 0;
+                s->dc_val[0][s->block_index[i]] = 0;
+            }
+            for (i=0; i<4; i++)
+            {
+                vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]);
+                vc1_mc_4mv_luma(v, i);
+            }
+            vc1_mc_4mv_chroma(v);
+            s->current_picture.qscale_table[mb_pos] = 0;
+            return 0;
+        }
+    }
+    v->cbp[s->mb_x] = block_cbp;
+
+    /* Should never happen */
+    return -1;
+}
+
+/** Decode one B-frame MB (in Main profile)
+ */
+static void vc1_decode_b_mb(VC1Context *v)
+{
+    MpegEncContext *s = &v->s;
+    GetBitContext *gb = &s->gb;
+    int i, j;
+    int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+    int cbp = 0; /* cbp decoding stuff */
+    int mqdiff, mquant; /* MB quantization */
+    int ttmb = v->ttfrm; /* MB Transform type */
+    int mb_has_coeffs = 0; /* last_flag */
+    int index, index1; /* LUT indexes */
+    int val, sign; /* temp values */
+    int first_block = 1;
+    int dst_idx, off;
+    int skipped, direct;
+    int dmv_x[2], dmv_y[2];
+    int bmvtype = BMV_TYPE_BACKWARD;
+
+    mquant = v->pq; /* Loosy initialization */
+    s->mb_intra = 0;
+
+    if (v->dmb_is_raw)
+        direct = get_bits1(gb);
+    else
+        direct = v->direct_mb_plane[mb_pos];
+    if (v->skip_is_raw)
+        skipped = get_bits1(gb);
+    else
+        skipped = v->s.mbskip_table[mb_pos];
+
+    s->dsp.clear_blocks(s->block[0]);
+    dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0;
+    for(i = 0; i < 6; i++) {
+        v->mb_type[0][s->block_index[i]] = 0;
+        s->dc_val[0][s->block_index[i]] = 0;
+    }
+    s->current_picture.qscale_table[mb_pos] = 0;
+
+    if (!direct) {
+        if (!skipped) {
+            GET_MVDATA(dmv_x[0], dmv_y[0]);
+            dmv_x[1] = dmv_x[0];
+            dmv_y[1] = dmv_y[0];
+        }
+        if(skipped || !s->mb_intra) {
+            bmvtype = decode012(gb);
+            switch(bmvtype) {
+            case 0:
+                bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD;
+                break;
+            case 1:
+                bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD;
+                break;
+            case 2:
+                bmvtype = BMV_TYPE_INTERPOLATED;
+                dmv_x[0] = dmv_y[0] = 0;
+            }
+        }
+    }
+    for(i = 0; i < 6; i++)
+        v->mb_type[0][s->block_index[i]] = s->mb_intra;
+
+    if (skipped) {
+        if(direct) bmvtype = BMV_TYPE_INTERPOLATED;
+        vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+        vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+        return;
+    }
+    if (direct) {
+        cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+        GET_MQUANT();
+        s->mb_intra = 0;
+        s->current_picture.qscale_table[mb_pos] = mquant;
+        if(!v->ttmbf)
+            ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+        dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
+        vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+        vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+    } else {
+        if(!mb_has_coeffs && !s->mb_intra) {
+            /* no coded blocks - effectively skipped */
+            vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+            vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+            return;
+        }
+        if(s->mb_intra && !mb_has_coeffs) {
+            GET_MQUANT();
+            s->current_picture.qscale_table[mb_pos] = mquant;
+            s->ac_pred = get_bits1(gb);
+            cbp = 0;
+            vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+        } else {
+            if(bmvtype == BMV_TYPE_INTERPOLATED) {
+                GET_MVDATA(dmv_x[0], dmv_y[0]);
+                if(!mb_has_coeffs) {
+                    /* interpolated skipped block */
+                    vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+                    vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+                    return;
+                }
+            }
+            vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
+            if(!s->mb_intra) {
+                vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
+            }
+            if(s->mb_intra)
+                s->ac_pred = get_bits1(gb);
+            cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+            GET_MQUANT();
+            s->current_picture.qscale_table[mb_pos] = mquant;
+            if(!v->ttmbf && !s->mb_intra && mb_has_coeffs)
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+        }
+    }
+    dst_idx = 0;
+    for (i=0; i<6; i++)
+    {
+        s->dc_val[0][s->block_index[i]] = 0;
+        dst_idx += i >> 2;
+        val = ((cbp >> (5 - i)) & 1);
+        off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize);
+        v->mb_type[0][s->block_index[i]] = s->mb_intra;
+        if(s->mb_intra) {
+            /* check if prediction blocks A and C are available */
+            v->a_avail = v->c_avail = 0;
+            if(i == 2 || i == 3 || !s->first_slice_line)
+                v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]];
+            if(i == 1 || i == 3 || s->mb_x)
+                v->c_avail = v->mb_type[0][s->block_index[i] - 1];
+
+            vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset);
+            if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue;
+            s->dsp.vc1_inv_trans_8x8(s->block[i]);
+            if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1;
+            s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
+        } else if(val) {
+            vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), 0, 0, 0);
+            if(!v->ttmbf && ttmb < 8) ttmb = -1;
+            first_block = 0;
+        }
+    }
+}
+
+/** Decode blocks of I-frame
+ */
+static void vc1_decode_i_blocks(VC1Context *v)
+{
+    int k, j;
+    MpegEncContext *s = &v->s;
+    int cbp, val;
+    uint8_t *coded_val;
+    int mb_pos;
+
+    /* select codingmode used for VLC tables selection */
+    switch(v->y_ac_table_index){
+    case 0:
+        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+        break;
+    case 1:
+        v->codingset = CS_HIGH_MOT_INTRA;
+        break;
+    case 2:
+        v->codingset = CS_MID_RATE_INTRA;
+        break;
+    }
+
+    switch(v->c_ac_table_index){
+    case 0:
+        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+        break;
+    case 1:
+        v->codingset2 = CS_HIGH_MOT_INTER;
+        break;
+    case 2:
+        v->codingset2 = CS_MID_RATE_INTER;
+        break;
+    }
+
+    /* Set DC scale - y and c use the same */
+    s->y_dc_scale = s->y_dc_scale_table[v->pq];
+    s->c_dc_scale = s->c_dc_scale_table[v->pq];
+
+    //do frame decode
+    s->mb_x = s->mb_y = 0;
+    s->mb_intra = 1;
+    s->first_slice_line = 1;
+    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
+        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
+            ff_init_block_index(s);
+            ff_update_block_index(s);
+            s->dsp.clear_blocks(s->block[0]);
+            mb_pos = s->mb_x + s->mb_y * s->mb_width;
+            s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
+            s->current_picture.qscale_table[mb_pos] = v->pq;
+            s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+            s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+
+            // do actual MB decoding and displaying
+            cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
+            v->s.ac_pred = get_bits1(&v->s.gb);
+
+            for(k = 0; k < 6; k++) {
+                val = ((cbp >> (5 - k)) & 1);
+
+                if (k < 4) {
+                    int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
+                    val = val ^ pred;
+                    *coded_val = val;
+                }
+                cbp |= val << (5 - k);
+
+                vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2);
+
+                s->dsp.vc1_inv_trans_8x8(s->block[k]);
+                if(v->pq >= 9 && v->overlap) {
+                    for(j = 0; j < 64; j++) s->block[k][j] += 128;
+                }
+            }
+
+            vc1_put_block(v, s->block);
+            if(v->pq >= 9 && v->overlap) {
+                if(s->mb_x) {
+                    s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
+                    s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+                    if(!(s->flags & CODEC_FLAG_GRAY)) {
+                        s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
+                        s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
+                    }
+                }
+                s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
+                s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+                if(!s->first_slice_line) {
+                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
+                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
+                    if(!(s->flags & CODEC_FLAG_GRAY)) {
+                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
+                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
+                    }
+                }
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+            }
+            if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
+
+            if(get_bits_count(&s->gb) > v->bits) {
+                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
+                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
+                return;
+            }
+        }
+        ff_draw_horiz_band(s, s->mb_y * 16, 16);
+        s->first_slice_line = 0;
+    }
+    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
+}
+
+/** Decode blocks of I-frame for advanced profile
+ */
+static void vc1_decode_i_blocks_adv(VC1Context *v)
+{
+    int k, j;
+    MpegEncContext *s = &v->s;
+    int cbp, val;
+    uint8_t *coded_val;
+    int mb_pos;
+    int mquant = v->pq;
+    int mqdiff;
+    int overlap;
+    GetBitContext *gb = &s->gb;
+
+    /* select codingmode used for VLC tables selection */
+    switch(v->y_ac_table_index){
+    case 0:
+        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+        break;
+    case 1:
+        v->codingset = CS_HIGH_MOT_INTRA;
+        break;
+    case 2:
+        v->codingset = CS_MID_RATE_INTRA;
+        break;
+    }
+
+    switch(v->c_ac_table_index){
+    case 0:
+        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+        break;
+    case 1:
+        v->codingset2 = CS_HIGH_MOT_INTER;
+        break;
+    case 2:
+        v->codingset2 = CS_MID_RATE_INTER;
+        break;
+    }
+
+    //do frame decode
+    s->mb_x = s->mb_y = 0;
+    s->mb_intra = 1;
+    s->first_slice_line = 1;
+    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
+        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
+            ff_init_block_index(s);
+            ff_update_block_index(s);
+            s->dsp.clear_blocks(s->block[0]);
+            mb_pos = s->mb_x + s->mb_y * s->mb_stride;
+            s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA;
+            s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
+            s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
+
+            // do actual MB decoding and displaying
+            cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
+            if(v->acpred_is_raw)
+                v->s.ac_pred = get_bits1(&v->s.gb);
+            else
+                v->s.ac_pred = v->acpred_plane[mb_pos];
+
+            if(v->condover == CONDOVER_SELECT) {
+                if(v->overflg_is_raw)
+                    overlap = get_bits1(&v->s.gb);
+                else
+                    overlap = v->over_flags_plane[mb_pos];
+            } else
+                overlap = (v->condover == CONDOVER_ALL);
+
+            GET_MQUANT();
+
+            s->current_picture.qscale_table[mb_pos] = mquant;
+            /* Set DC scale - y and c use the same */
+            s->y_dc_scale = s->y_dc_scale_table[mquant];
+            s->c_dc_scale = s->c_dc_scale_table[mquant];
+
+            for(k = 0; k < 6; k++) {
+                val = ((cbp >> (5 - k)) & 1);
+
+                if (k < 4) {
+                    int pred = vc1_coded_block_pred(&v->s, k, &coded_val);
+                    val = val ^ pred;
+                    *coded_val = val;
+                }
+                cbp |= val << (5 - k);
+
+                v->a_avail = !s->first_slice_line || (k==2 || k==3);
+                v->c_avail = !!s->mb_x || (k==1 || k==3);
+
+                vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant);
+
+                s->dsp.vc1_inv_trans_8x8(s->block[k]);
+                for(j = 0; j < 64; j++) s->block[k][j] += 128;
+            }
+
+            vc1_put_block(v, s->block);
+            if(overlap) {
+                if(s->mb_x) {
+                    s->dsp.vc1_h_overlap(s->dest[0], s->linesize);
+                    s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+                    if(!(s->flags & CODEC_FLAG_GRAY)) {
+                        s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize);
+                        s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize);
+                    }
+                }
+                s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize);
+                s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+                if(!s->first_slice_line) {
+                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize);
+                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize);
+                    if(!(s->flags & CODEC_FLAG_GRAY)) {
+                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize);
+                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize);
+                    }
+                }
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize);
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize);
+            }
+            if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
+
+            if(get_bits_count(&s->gb) > v->bits) {
+                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
+                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits);
+                return;
+            }
+        }
+        ff_draw_horiz_band(s, s->mb_y * 16, 16);
+        s->first_slice_line = 0;
+    }
+    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
+}
+
+static void vc1_decode_p_blocks(VC1Context *v)
+{
+    MpegEncContext *s = &v->s;
+
+    /* select codingmode used for VLC tables selection */
+    switch(v->c_ac_table_index){
+    case 0:
+        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+        break;
+    case 1:
+        v->codingset = CS_HIGH_MOT_INTRA;
+        break;
+    case 2:
+        v->codingset = CS_MID_RATE_INTRA;
+        break;
+    }
+
+    switch(v->c_ac_table_index){
+    case 0:
+        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+        break;
+    case 1:
+        v->codingset2 = CS_HIGH_MOT_INTER;
+        break;
+    case 2:
+        v->codingset2 = CS_MID_RATE_INTER;
+        break;
+    }
+
+    s->first_slice_line = 1;
+    memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride);
+    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
+        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
+            ff_init_block_index(s);
+            ff_update_block_index(s);
+            s->dsp.clear_blocks(s->block[0]);
+
+            vc1_decode_p_mb(v);
+            if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
+                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
+                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
+                return;
+            }
+        }
+        memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride);
+        ff_draw_horiz_band(s, s->mb_y * 16, 16);
+        s->first_slice_line = 0;
+    }
+    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
+}
+
+static void vc1_decode_b_blocks(VC1Context *v)
+{
+    MpegEncContext *s = &v->s;
+
+    /* select codingmode used for VLC tables selection */
+    switch(v->c_ac_table_index){
+    case 0:
+        v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA;
+        break;
+    case 1:
+        v->codingset = CS_HIGH_MOT_INTRA;
+        break;
+    case 2:
+        v->codingset = CS_MID_RATE_INTRA;
+        break;
+    }
+
+    switch(v->c_ac_table_index){
+    case 0:
+        v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER;
+        break;
+    case 1:
+        v->codingset2 = CS_HIGH_MOT_INTER;
+        break;
+    case 2:
+        v->codingset2 = CS_MID_RATE_INTER;
+        break;
+    }
+
+    s->first_slice_line = 1;
+    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
+        for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
+            ff_init_block_index(s);
+            ff_update_block_index(s);
+            s->dsp.clear_blocks(s->block[0]);
+
+            vc1_decode_b_mb(v);
+            if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) {
+                ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END));
+                av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y);
+                return;
+            }
+            if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq);
+        }
+        ff_draw_horiz_band(s, s->mb_y * 16, 16);
+        s->first_slice_line = 0;
+    }
+    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
+}
+
+static void vc1_decode_skip_blocks(VC1Context *v)
+{
+    MpegEncContext *s = &v->s;
+
+    ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END));
+    s->first_slice_line = 1;
+    for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
+        s->mb_x = 0;
+        ff_init_block_index(s);
+        ff_update_block_index(s);
+        memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16);
+        memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
+        memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8);
+        ff_draw_horiz_band(s, s->mb_y * 16, 16);
+        s->first_slice_line = 0;
+    }
+    s->pict_type = FF_P_TYPE;
+}
+
+static void vc1_decode_blocks(VC1Context *v)
+{
+
+    v->s.esc3_level_length = 0;
+    if(v->x8_type){
+        ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) );
+    }else{
+
+        switch(v->s.pict_type) {
+        case FF_I_TYPE:
+            if(v->profile == PROFILE_ADVANCED)
+                vc1_decode_i_blocks_adv(v);
+            else
+                vc1_decode_i_blocks(v);
+            break;
+        case FF_P_TYPE:
+            if(v->p_frame_skipped)
+                vc1_decode_skip_blocks(v);
+            else
+                vc1_decode_p_blocks(v);
+            break;
+        case FF_B_TYPE:
+            if(v->bi_type){
+                if(v->profile == PROFILE_ADVANCED)
+                    vc1_decode_i_blocks_adv(v);
+                else
+                    vc1_decode_i_blocks(v);
+            }else
+                vc1_decode_b_blocks(v);
+            break;
+        }
+    }
+}
+
+/** Initialize a VC1/WMV3 decoder
+ * @todo TODO: Handle VC-1 IDUs (Transport level?)
+ * @todo TODO: Decypher remaining bits in extra_data
+ */
+static av_cold int vc1_decode_init(AVCodecContext *avctx)
+{
+    VC1Context *v = avctx->priv_data;
+    MpegEncContext *s = &v->s;
+    GetBitContext gb;
+
+    if (!avctx->extradata_size || !avctx->extradata) return -1;
+    if (!(avctx->flags & CODEC_FLAG_GRAY))
+        avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts);
+    else
+        avctx->pix_fmt = PIX_FMT_GRAY8;
+    avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt);
+    v->s.avctx = avctx;
+    avctx->flags |= CODEC_FLAG_EMU_EDGE;
+    v->s.flags |= CODEC_FLAG_EMU_EDGE;
+
+    if(avctx->idct_algo==FF_IDCT_AUTO){
+        avctx->idct_algo=FF_IDCT_WMV2;
+    }
+
+    if(ff_h263_decode_init(avctx) < 0)
+        return -1;
+    if (vc1_init_common(v) < 0) return -1;
+
+    avctx->coded_width = avctx->width;
+    avctx->coded_height = avctx->height;
+    if (avctx->codec_id == CODEC_ID_WMV3)
+    {
+        int count = 0;
+
+        // looks like WMV3 has a sequence header stored in the extradata
+        // advanced sequence header may be before the first frame
+        // the last byte of the extradata is a version number, 1 for the
+        // samples we can decode
+
+        init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8);
+
+        if (vc1_decode_sequence_header(avctx, v, &gb) < 0)
+          return -1;
+
+        count = avctx->extradata_size*8 - get_bits_count(&gb);
+        if (count>0)
+        {
+            av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n",
+                   count, get_bits(&gb, count));
+        }
+        else if (count < 0)
+        {
+            av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count);
+        }
+    } else { // VC1/WVC1
+        const uint8_t *start = avctx->extradata;
+        uint8_t *end = avctx->extradata + avctx->extradata_size;
+        const uint8_t *next;
+        int size, buf2_size;
+        uint8_t *buf2 = NULL;
+        int seq_initialized = 0, ep_initialized = 0;
+
+        if(avctx->extradata_size < 16) {
+            av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size);
+            return -1;
+        }
+
+        buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+        if(start[0]) start++; // in WVC1 extradata first byte is its size
+        next = start;
+        for(; next < end; start = next){
+            next = find_next_marker(start + 4, end);
+            size = next - start - 4;
+            if(size <= 0) continue;
+            buf2_size = vc1_unescape_buffer(start + 4, size, buf2);
+            init_get_bits(&gb, buf2, buf2_size * 8);
+            switch(AV_RB32(start)){
+            case VC1_CODE_SEQHDR:
+                if(vc1_decode_sequence_header(avctx, v, &gb) < 0){
+                    av_free(buf2);
+                    return -1;
+                }
+                seq_initialized = 1;
+                break;
+            case VC1_CODE_ENTRYPOINT:
+                if(vc1_decode_entry_point(avctx, v, &gb) < 0){
+                    av_free(buf2);
+                    return -1;
+                }
+                ep_initialized = 1;
+                break;
+            }
+        }
+        av_free(buf2);
+        if(!seq_initialized || !ep_initialized){
+            av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n");
+            return -1;
+        }
+    }
+    avctx->has_b_frames= !!(avctx->max_b_frames);
+    s->low_delay = !avctx->has_b_frames;
+
+    s->mb_width = (avctx->coded_width+15)>>4;
+    s->mb_height = (avctx->coded_height+15)>>4;
+
+    /* Allocate mb bitplanes */
+    v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height);
+    v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height);
+    v->acpred_plane = av_malloc(s->mb_stride * s->mb_height);
+    v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height);
+
+    v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride);
+    v->cbp = v->cbp_base + s->mb_stride;
+
+    /* allocate block type info in that way so it could be used with s->block_index[] */
+    v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2);
+    v->mb_type[0] = v->mb_type_base + s->b8_stride + 1;
+    v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1;
+    v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1);
+
+    /* Init coded blocks info */
+    if (v->profile == PROFILE_ADVANCED)
+    {
+//        if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0)
+//            return -1;
+//        if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0)
+//            return -1;
+    }
+
+    ff_intrax8_common_init(&v->x8,s);
+    return 0;
+}
+
+
+/** Decode a VC1/WMV3 frame
+ * @todo TODO: Handle VC-1 IDUs (Transport level?)
+ */
+static int vc1_decode_frame(AVCodecContext *avctx,
+                            void *data, int *data_size,
+                            AVPacket *avpkt)
+{
+    const uint8_t *buf = avpkt->data;
+    int buf_size = avpkt->size;
+    VC1Context *v = avctx->priv_data;
+    MpegEncContext *s = &v->s;
+    AVFrame *pict = data;
+    uint8_t *buf2 = NULL;
+    const uint8_t *buf_start = buf;
+
+    /* no supplementary picture */
+    if (buf_size == 0) {
+        /* special case for last picture */
+        if (s->low_delay==0 && s->next_picture_ptr) {
+            *pict= *(AVFrame*)s->next_picture_ptr;
+            s->next_picture_ptr= NULL;
+
+            *data_size = sizeof(AVFrame);
+        }
+
+        return 0;
+    }
+
+    /* We need to set current_picture_ptr before reading the header,
+     * otherwise we cannot store anything in there. */
+    if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
+        int i= ff_find_unused_picture(s, 0);
+        s->current_picture_ptr= &s->picture[i];
+    }
+
+    if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
+        if (v->profile < PROFILE_ADVANCED)
+            avctx->pix_fmt = PIX_FMT_VDPAU_WMV3;
+        else
+            avctx->pix_fmt = PIX_FMT_VDPAU_VC1;
+    }
+
+    //for advanced profile we may need to parse and unescape data
+    if (avctx->codec_id == CODEC_ID_VC1) {
+        int buf_size2 = 0;
+        buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+
+        if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */
+            const uint8_t *start, *end, *next;
+            int size;
+
+            next = buf;
+            for(start = buf, end = buf + buf_size; next < end; start = next){
+                next = find_next_marker(start + 4, end);
+                size = next - start - 4;
+                if(size <= 0) continue;
+                switch(AV_RB32(start)){
+                case VC1_CODE_FRAME:
+                    if (avctx->hwaccel ||
+                        s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
+                        buf_start = start;
+                    buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
+                    break;
+                case VC1_CODE_ENTRYPOINT: /* it should be before frame data */
+                    buf_size2 = vc1_unescape_buffer(start + 4, size, buf2);
+                    init_get_bits(&s->gb, buf2, buf_size2*8);
+                    vc1_decode_entry_point(avctx, v, &s->gb);
+                    break;
+                case VC1_CODE_SLICE:
+                    av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n");
+                    av_free(buf2);
+                    return -1;
+                }
+            }
+        }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */
+            const uint8_t *divider;
+
+            divider = find_next_marker(buf, buf + buf_size);
+            if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){
+                av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n");
+                av_free(buf2);
+                return -1;
+            }
+
+            buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2);
+            // TODO
+            av_free(buf2);return -1;
+        }else{
+            buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2);
+        }
+        init_get_bits(&s->gb, buf2, buf_size2*8);
+    } else
+        init_get_bits(&s->gb, buf, buf_size*8);
+    // do parse frame header
+    if(v->profile < PROFILE_ADVANCED) {
+        if(vc1_parse_frame_header(v, &s->gb) == -1) {
+            av_free(buf2);
+            return -1;
+        }
+    } else {
+        if(vc1_parse_frame_header_adv(v, &s->gb) == -1) {
+            av_free(buf2);
+            return -1;
+        }
+    }
+
+    if(s->pict_type != FF_I_TYPE && !v->res_rtm_flag){
+        av_free(buf2);
+        return -1;
+    }
+
+    // for hurry_up==5
+    s->current_picture.pict_type= s->pict_type;
+    s->current_picture.key_frame= s->pict_type == FF_I_TYPE;
+
+    /* skip B-frames if we don't have reference frames */
+    if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){
+        av_free(buf2);
+        return -1;//buf_size;
+    }
+    /* skip b frames if we are in a hurry */
+    if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size;
+    if(   (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE)
+       || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE)
+       ||  avctx->skip_frame >= AVDISCARD_ALL) {
+        av_free(buf2);
+        return buf_size;
+    }
+    /* skip everything if we are in a hurry>=5 */
+    if(avctx->hurry_up>=5) {
+        av_free(buf2);
+        return -1;//buf_size;
+    }
+
+    if(s->next_p_frame_damaged){
+        if(s->pict_type==FF_B_TYPE)
+            return buf_size;
+        else
+            s->next_p_frame_damaged=0;
+    }
+
+    if(MPV_frame_start(s, avctx) < 0) {
+        av_free(buf2);
+        return -1;
+    }
+
+    s->me.qpel_put= s->dsp.put_qpel_pixels_tab;
+    s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab;
+
+    if ((CONFIG_VC1_VDPAU_DECODER || CONFIG_WMV3_VDPAU_DECODER)
+        &&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
+        ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start);
+    else if (avctx->hwaccel) {
+        if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0)
+            return -1;
+        if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0)
+            return -1;
+        if (avctx->hwaccel->end_frame(avctx) < 0)
+            return -1;
+    } else {
+        ff_er_frame_start(s);
+
+        v->bits = buf_size * 8;
+        vc1_decode_blocks(v);
+//av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8);
+//  if(get_bits_count(&s->gb) > buf_size * 8)
+//      return -1;
+        ff_er_frame_end(s);
+    }
+
+    MPV_frame_end(s);
+
+assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
+assert(s->current_picture.pict_type == s->pict_type);
+    if (s->pict_type == FF_B_TYPE || s->low_delay) {
+        *pict= *(AVFrame*)s->current_picture_ptr;
+    } else if (s->last_picture_ptr != NULL) {
+        *pict= *(AVFrame*)s->last_picture_ptr;
+    }
+
+    if(s->last_picture_ptr || s->low_delay){
+        *data_size = sizeof(AVFrame);
+        ff_print_debug_info(s, pict);
+    }
+
+    av_free(buf2);
+    return buf_size;
+}
+
+
+/** Close a VC1/WMV3 decoder
+ * @warning Initial try at using MpegEncContext stuff
+ */
+static av_cold int vc1_decode_end(AVCodecContext *avctx)
+{
+    VC1Context *v = avctx->priv_data;
+
+    av_freep(&v->hrd_rate);
+    av_freep(&v->hrd_buffer);
+    MPV_common_end(&v->s);
+    av_freep(&v->mv_type_mb_plane);
+    av_freep(&v->direct_mb_plane);
+    av_freep(&v->acpred_plane);
+    av_freep(&v->over_flags_plane);
+    av_freep(&v->mb_type_base);
+    av_freep(&v->cbp_base);
+    ff_intrax8_common_end(&v->x8);
+    return 0;
+}
+
+
+AVCodec vc1_decoder = {
+    "vc1",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_VC1,
+    sizeof(VC1Context),
+    vc1_decode_init,
+    NULL,
+    vc1_decode_end,
+    vc1_decode_frame,
+    CODEC_CAP_DR1 | CODEC_CAP_DELAY,
+    NULL,
+    .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"),
+    .pix_fmts = ff_hwaccel_pixfmt_list_420
+};
+
+AVCodec wmv3_decoder = {
+    "wmv3",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_WMV3,
+    sizeof(VC1Context),
+    vc1_decode_init,
+    NULL,
+    vc1_decode_end,
+    vc1_decode_frame,
+    CODEC_CAP_DR1 | CODEC_CAP_DELAY,
+    NULL,
+    .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"),
+    .pix_fmts = ff_hwaccel_pixfmt_list_420
+};
+
+#if CONFIG_WMV3_VDPAU_DECODER
+AVCodec wmv3_vdpau_decoder = {
+    "wmv3_vdpau",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_WMV3,
+    sizeof(VC1Context),
+    vc1_decode_init,
+    NULL,
+    vc1_decode_end,
+    vc1_decode_frame,
+    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
+    NULL,
+    .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"),
+    .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_WMV3, PIX_FMT_NONE}
+};
+#endif
+
+#if CONFIG_VC1_VDPAU_DECODER
+AVCodec vc1_vdpau_decoder = {
+    "vc1_vdpau",
+    CODEC_TYPE_VIDEO,
+    CODEC_ID_VC1,
+    sizeof(VC1Context),
+    vc1_decode_init,
+    NULL,
+    vc1_decode_end,
+    vc1_decode_frame,
+    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
+    NULL,
+    .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"),
+    .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_VC1, PIX_FMT_NONE}
+};
+#endif