[FFmpeg-devel] [PATCH 34/61] avcodec/vc1: Avoid superfluous VLC structures

[Andreas Rheinhardt <andreas.rheinhardt@outlook.com>]

For all VLCs here, the number of bits of the VLC is
write-only, because it is hardcoded at the call site.
Therefore one can replace these VLC structures with
the only thing that is actually used: The pointer
to the VLCElem table. And in some cases one can even
avoid this.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/vc1.c       |  60 +++++++-------
 libavcodec/vc1.h       |  10 +--
 libavcodec/vc1_block.c |  74 +++++++++---------
 libavcodec/vc1data.c   |  36 ++++-----
 libavcodec/vc1data.h   |  36 ++++-----
 libavcodec/vc1dec.c    | 174 +++++++++++++++++------------------------
 6 files changed, 180 insertions(+), 210 deletions(-)

diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index 795c6db541..e234192fdd 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -104,7 +104,7 @@ static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
     height = v->s.mb_height >> v->field_mode;
     stride = v->s.mb_stride;
     invert = get_bits1(gb);
-    imode = get_vlc2(gb, ff_vc1_imode_vlc.table, VC1_IMODE_VLC_BITS, 1);
+    imode = get_vlc2(gb, ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 1);
 
     *raw_flag = 0;
     switch (imode) {
@@ -126,7 +126,7 @@ static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
             y = offset = 0;
         // decode bitplane as one long line
         for (; y < height * width; y += 2) {
-            code = get_vlc2(gb, ff_vc1_norm2_vlc.table, VC1_NORM2_VLC_BITS, 1);
+            code = get_vlc2(gb, ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 1);
             *planep++ = code & 1;
             offset++;
             if (offset == width) {
@@ -146,7 +146,7 @@ static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
         if (!(height % 3) && (width % 3)) { // use 2x3 decoding
             for (y = 0; y < height; y += 3) {
                 for (x = width & 1; x < width; x += 2) {
-                    code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
+                    code = get_vlc2(gb, ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 2);
                     if (code < 0) {
                         av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
                         return -1;
@@ -166,7 +166,7 @@ static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v)
             planep += (height & 1) * stride;
             for (y = height & 1; y < height; y += 2) {
                 for (x = width % 3; x < width; x += 3) {
-                    code = get_vlc2(gb, ff_vc1_norm6_vlc.table, VC1_NORM6_VLC_BITS, 2);
+                    code = get_vlc2(gb, ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 2);
                     if (code < 0) {
                         av_log(v->s.avctx, AV_LOG_DEBUG, "invalid NORM-6 VLC\n");
                         return -1;
@@ -765,7 +765,7 @@ int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
         /* Hopefully this is correct for P-frames */
         v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
         v->cbptab = get_bits(gb, 2);
-        v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[v->cbptab];
+        v->cbpcy_vlc = ff_vc1_cbpcy_p_vlc[v->cbptab];
 
         if (v->dquant) {
             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
@@ -804,7 +804,7 @@ int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)
 
         v->s.mv_table_index = get_bits(gb, 2);
         v->cbptab           = get_bits(gb, 2);
-        v->cbpcy_vlc        = &ff_vc1_cbpcy_p_vlc[v->cbptab];
+        v->cbpcy_vlc        = ff_vc1_cbpcy_p_vlc[v->cbptab];
 
         if (v->dquant) {
             av_log(v->s.avctx, AV_LOG_DEBUG, "VOP DQuant info\n");
@@ -1061,19 +1061,19 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
                        "Imode: %i, Invert: %i\n", status>>1, status&1);
                 v->mbmodetab = get_bits(gb, 2);
                 if (v->fourmvswitch)
-                    v->mbmode_vlc = &ff_vc1_intfr_4mv_mbmode_vlc[v->mbmodetab];
+                    v->mbmode_vlc = ff_vc1_intfr_4mv_mbmode_vlc[v->mbmodetab];
                 else
-                    v->mbmode_vlc = &ff_vc1_intfr_non4mv_mbmode_vlc[v->mbmodetab];
+                    v->mbmode_vlc = ff_vc1_intfr_non4mv_mbmode_vlc[v->mbmodetab];
                 v->imvtab      = get_bits(gb, 2);
-                v->imv_vlc     = &ff_vc1_1ref_mvdata_vlc[v->imvtab];
+                v->imv_vlc     = ff_vc1_1ref_mvdata_vlc[v->imvtab];
                 // interlaced p-picture cbpcy range is [1, 63]
                 v->icbptab     = get_bits(gb, 3);
-                v->cbpcy_vlc   = &ff_vc1_icbpcy_vlc[v->icbptab];
+                v->cbpcy_vlc   = ff_vc1_icbpcy_vlc[v->icbptab];
                 v->twomvbptab     = get_bits(gb, 2);
-                v->twomvbp_vlc = &ff_vc1_2mv_block_pattern_vlc[v->twomvbptab];
+                v->twomvbp_vlc = ff_vc1_2mv_block_pattern_vlc[v->twomvbptab];
                 if (v->fourmvswitch) {
                     v->fourmvbptab     = get_bits(gb, 2);
-                    v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
+                    v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
                 }
             }
         }
@@ -1158,7 +1158,7 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
             /* Hopefully this is correct for P-frames */
             v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables
             v->cbptab           = get_bits(gb, 2);
-            v->cbpcy_vlc        = &ff_vc1_cbpcy_p_vlc[v->cbptab];
+            v->cbpcy_vlc        = ff_vc1_cbpcy_p_vlc[v->cbptab];
         } else if (v->fcm == ILACE_FRAME) { // frame interlaced
             v->qs_last          = v->s.quarter_sample;
             v->s.quarter_sample = 1;
@@ -1167,18 +1167,18 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
             v->mbmodetab = get_bits(gb, 3);
             v->imvtab = get_bits(gb, 2 + v->numref);
             if (!v->numref)
-                v->imv_vlc = &ff_vc1_1ref_mvdata_vlc[v->imvtab];
+                v->imv_vlc = ff_vc1_1ref_mvdata_vlc[v->imvtab];
             else
-                v->imv_vlc = &ff_vc1_2ref_mvdata_vlc[v->imvtab];
+                v->imv_vlc = ff_vc1_2ref_mvdata_vlc[v->imvtab];
             v->icbptab = get_bits(gb, 3);
-            v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[v->icbptab];
+            v->cbpcy_vlc = ff_vc1_icbpcy_vlc[v->icbptab];
             if ((v->mv_mode == MV_PMODE_INTENSITY_COMP &&
                 v->mv_mode2 == MV_PMODE_MIXED_MV) || v->mv_mode == MV_PMODE_MIXED_MV) {
                 v->fourmvbptab     = get_bits(gb, 2);
-                v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
-                v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[v->mbmodetab];
+                v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
+                v->mbmode_vlc   = ff_vc1_if_mmv_mbmode_vlc[v->mbmodetab];
             } else {
-                v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[v->mbmodetab];
+                v->mbmode_vlc   = ff_vc1_if_1mv_mbmode_vlc[v->mbmodetab];
             }
         }
         if (v->dquant) {
@@ -1234,16 +1234,16 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
                    "Imode: %i, Invert: %i\n", status>>1, status&1);
             v->mbmodetab = get_bits(gb, 3);
             if (v->mv_mode == MV_PMODE_MIXED_MV)
-                v->mbmode_vlc = &ff_vc1_if_mmv_mbmode_vlc[v->mbmodetab];
+                v->mbmode_vlc = ff_vc1_if_mmv_mbmode_vlc[v->mbmodetab];
             else
-                v->mbmode_vlc = &ff_vc1_if_1mv_mbmode_vlc[v->mbmodetab];
+                v->mbmode_vlc = ff_vc1_if_1mv_mbmode_vlc[v->mbmodetab];
             v->imvtab     = get_bits(gb, 3);
-            v->imv_vlc   = &ff_vc1_2ref_mvdata_vlc[v->imvtab];
+            v->imv_vlc   = ff_vc1_2ref_mvdata_vlc[v->imvtab];
             v->icbptab   = get_bits(gb, 3);
-            v->cbpcy_vlc = &ff_vc1_icbpcy_vlc[v->icbptab];
+            v->cbpcy_vlc = ff_vc1_icbpcy_vlc[v->icbptab];
             if (v->mv_mode == MV_PMODE_MIXED_MV) {
                 v->fourmvbptab     = get_bits(gb, 2);
-                v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
+                v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
             }
             v->numref = 1; // interlaced field B pictures are always 2-ref
         } else if (v->fcm == ILACE_FRAME) {
@@ -1268,16 +1268,16 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
             av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: "
                    "Imode: %i, Invert: %i\n", status>>1, status&1);
             v->mbmodetab       = get_bits(gb, 2);
-            v->mbmode_vlc   = &ff_vc1_intfr_non4mv_mbmode_vlc[v->mbmodetab];
+            v->mbmode_vlc   = ff_vc1_intfr_non4mv_mbmode_vlc[v->mbmodetab];
             v->imvtab       = get_bits(gb, 2);
-            v->imv_vlc      = &ff_vc1_1ref_mvdata_vlc[v->imvtab];
+            v->imv_vlc      = ff_vc1_1ref_mvdata_vlc[v->imvtab];
             // interlaced p/b-picture cbpcy range is [1, 63]
             v->icbptab      = get_bits(gb, 3);
-            v->cbpcy_vlc    = &ff_vc1_icbpcy_vlc[v->icbptab];
+            v->cbpcy_vlc    = ff_vc1_icbpcy_vlc[v->icbptab];
             v->twomvbptab      = get_bits(gb, 2);
-            v->twomvbp_vlc  = &ff_vc1_2mv_block_pattern_vlc[v->twomvbptab];
+            v->twomvbp_vlc  = ff_vc1_2mv_block_pattern_vlc[v->twomvbptab];
             v->fourmvbptab     = get_bits(gb, 2);
-            v->fourmvbp_vlc = &ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
+            v->fourmvbp_vlc = ff_vc1_4mv_block_pattern_vlc[v->fourmvbptab];
         } else {
             v->mv_mode          = get_bits1(gb) ? MV_PMODE_1MV : MV_PMODE_1MV_HPEL_BILIN;
             v->qs_last          = v->s.quarter_sample;
@@ -1295,7 +1295,7 @@ int ff_vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
                    "Imode: %i, Invert: %i\n", status>>1, status&1);
             v->s.mv_table_index = get_bits(gb, 2);
             v->cbptab = get_bits(gb, 2);
-            v->cbpcy_vlc = &ff_vc1_cbpcy_p_vlc[v->cbptab];
+            v->cbpcy_vlc = ff_vc1_cbpcy_p_vlc[v->cbptab];
         }
 
         if (v->dquant) {
diff --git a/libavcodec/vc1.h b/libavcodec/vc1.h
index 3b6be78141..0e01458c89 100644
--- a/libavcodec/vc1.h
+++ b/libavcodec/vc1.h
@@ -279,7 +279,7 @@ typedef struct VC1Context{
      */
     uint8_t mvrange;                ///< Extended MV range flag
     uint8_t pquantizer;             ///< Uniform (over sequence) quantizer in use
-    VLC *cbpcy_vlc;                 ///< CBPCY VLC table
+    const VLCElem *cbpcy_vlc;       ///< CBPCY VLC table
     int tt_index;                   ///< Index for Transform Type tables (to decode TTMB)
     uint8_t* mv_type_mb_plane;      ///< bitplane for mv_type == (4MV)
     uint8_t* direct_mb_plane;       ///< bitplane for "direct" MBs
@@ -334,10 +334,10 @@ typedef struct VC1Context{
     int intcomp;
     uint8_t lumscale2;  ///< for interlaced field P picture
     uint8_t lumshift2;
-    VLC* mbmode_vlc;
-    VLC* imv_vlc;
-    VLC* twomvbp_vlc;
-    VLC* fourmvbp_vlc;
+    const VLCElem *mbmode_vlc;
+    const VLCElem *imv_vlc;
+    const VLCElem *twomvbp_vlc;
+    const VLCElem *fourmvbp_vlc;
     uint8_t twomvbp;
     uint8_t fourmvbp;
     uint8_t* fieldtx_plane;
diff --git a/libavcodec/vc1_block.c b/libavcodec/vc1_block.c
index 751ea57617..a6ee4922f9 100644
--- a/libavcodec/vc1_block.c
+++ b/libavcodec/vc1_block.c
@@ -227,7 +227,7 @@ static void vc1_put_blocks_clamped(VC1Context *v, int put_signed)
  * @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, \
+    index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index],     \
                          VC1_MV_DIFF_VLC_BITS, 2);                      \
     if (index > 36) {                                                   \
         mb_has_coeffs = 1;                                              \
@@ -282,7 +282,7 @@ static av_always_inline void get_mvdata_interlaced(VC1Context *v, int *dmv_x,
     }
     extend_x = v->dmvrange & 1;
     extend_y = (v->dmvrange >> 1) & 1;
-    index = get_vlc2(gb, v->imv_vlc->table, bits, 3);
+    index = get_vlc2(gb, v->imv_vlc, bits, 3);
     if (index == esc) {
         *dmv_x = get_bits(gb, v->k_x);
         *dmv_y = get_bits(gb, v->k_y);
@@ -519,7 +519,7 @@ static int vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip,
     GetBitContext *gb = &v->s.gb;
     int index, run, level, lst, sign;
 
-    index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
+    index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset], AC_VLC_BITS, 3);
     if (index < 0)
         return index;
     if (index != ff_vc1_ac_sizes[codingset] - 1) {
@@ -530,7 +530,7 @@ static int vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip,
     } else {
         int escape = decode210(gb);
         if (escape != 2) {
-            index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
+            index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset], AC_VLC_BITS, 3);
             if (index >= ff_vc1_ac_sizes[codingset] - 1U)
                 return AVERROR_INVALIDDATA;
             run   = vc1_index_decode_table[codingset][index][0];
@@ -1124,10 +1124,10 @@ static int vc1_decode_p_block(VC1Context *v, int16_t block[64], int n,
     s->bdsp.clear_block(block);
 
     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)];
+        ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index], 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);
+        subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index], VC1_SUBBLKPAT_VLC_BITS, 1) + 1);
     }
     if ((ttblk != TT_8X8 && ttblk != TT_4X4)
         && ((v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))
@@ -1328,7 +1328,7 @@ static int vc1_decode_p_mb(VC1Context *v)
             } 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);
+                cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
                 GET_MQUANT();
             } else {
                 mquant = v->pq;
@@ -1337,7 +1337,7 @@ static int vc1_decode_p_mb(VC1Context *v)
             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,
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index],
                                 VC1_TTMB_VLC_BITS, 2);
             if (!s->mb_intra) ff_vc1_mc_1mv(v, 0);
             dst_idx = 0;
@@ -1393,7 +1393,7 @@ static int vc1_decode_p_mb(VC1Context *v)
             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);
+            cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, 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;
@@ -1445,7 +1445,7 @@ static int vc1_decode_p_mb(VC1Context *v)
                     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);
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], 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);
@@ -1539,9 +1539,9 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
         skipped = v->s.mbskip_table[mb_pos];
     if (!skipped) {
         if (v->fourmvswitch)
-            idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done
+            idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_4MV_MBMODE_VLC_BITS, 2); // try getting this done
         else
-            idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line
+            idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2); // in a single line
         switch (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0]) {
         /* store the motion vector type in a flag (useful later) */
         case MV_PMODE_INTFR_4MV:
@@ -1583,7 +1583,7 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
             fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
             mb_has_coeffs = get_bits1(gb);
             if (mb_has_coeffs)
-                cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+                cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
             v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
             GET_MQUANT();
             s->current_picture.qscale_table[mb_pos] = mquant;
@@ -1617,13 +1617,13 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
         } else { // inter MB
             mb_has_coeffs = ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][3];
             if (mb_has_coeffs)
-                cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+                cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
             if (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
-                v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
+                v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
             } else {
                 if ((ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV)
                     || (ff_vc1_mbmode_intfrp[v->fourmvswitch][idx_mbmode][0] == MV_PMODE_INTFR_4MV_FIELD)) {
-                    v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+                    v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
                 }
             }
             s->mb_intra = v->is_intra[s->mb_x] = 0;
@@ -1672,7 +1672,7 @@ static int vc1_decode_p_mb_intfr(VC1Context *v)
                 GET_MQUANT();  // p. 227
             s->current_picture.qscale_table[mb_pos] = mquant;
             if (!v->ttmbf && cbp)
-                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
             for (i = 0; i < 6; i++) {
                 s->dc_val[0][s->block_index[i]] = 0;
                 dst_idx += i >> 2;
@@ -1742,7 +1742,7 @@ static int vc1_decode_p_mb_intfi(VC1Context *v)
 
     mquant = v->pq; /* Lossy initialization */
 
-    idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2);
+    idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
     if (idx_mbmode <= 1) { // intra MB
         v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
         s->mb_intra          = 1;
@@ -1757,7 +1757,7 @@ static int vc1_decode_p_mb_intfi(VC1Context *v)
         v->s.ac_pred  = v->acpred_plane[mb_pos] = get_bits1(gb);
         mb_has_coeffs = idx_mbmode & 1;
         if (mb_has_coeffs)
-            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2);
+            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
         dst_idx = 0;
         for (i = 0; i < 6; i++) {
             v->a_avail = v->c_avail          = 0;
@@ -1792,7 +1792,7 @@ static int vc1_decode_p_mb_intfi(VC1Context *v)
             ff_vc1_mc_1mv(v, 0);
             mb_has_coeffs = !(idx_mbmode & 2);
         } else { // 4-MV
-            v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+            v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
             for (i = 0; i < 4; i++) {
                 dmv_x = dmv_y = pred_flag = 0;
                 if (v->fourmvbp & (8 >> i))
@@ -1804,13 +1804,13 @@ static int vc1_decode_p_mb_intfi(VC1Context *v)
             mb_has_coeffs = idx_mbmode & 1;
         }
         if (mb_has_coeffs)
-            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
         if (cbp) {
             GET_MQUANT();
         }
         s->current_picture.qscale_table[mb_pos] = mquant;
         if (!v->ttmbf && cbp) {
-            ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+            ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
         }
         dst_idx = 0;
         for (i = 0; i < 6; i++) {
@@ -1914,12 +1914,12 @@ static int vc1_decode_b_mb(VC1Context *v)
         return 0;
     }
     if (direct) {
-        cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+        cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, 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);
+            ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
         dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0;
         ff_vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype);
         vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype);
@@ -1952,11 +1952,11 @@ static int vc1_decode_b_mb(VC1Context *v)
             }
             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);
+            cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc, 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);
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
         }
     }
     dst_idx = 0;
@@ -2025,7 +2025,7 @@ static int vc1_decode_b_mb_intfi(VC1Context *v)
     mquant      = v->pq; /* Lossy initialization */
     s->mb_intra = 0;
 
-    idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_IF_MBMODE_VLC_BITS, 2);
+    idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_IF_MBMODE_VLC_BITS, 2);
     if (idx_mbmode <= 1) { // intra MB
         v->is_intra[s->mb_x] = 0x3f; // Set the bitfield to all 1.
         s->mb_intra          = 1;
@@ -2040,7 +2040,7 @@ static int vc1_decode_b_mb_intfi(VC1Context *v)
         v->s.ac_pred  = v->acpred_plane[mb_pos] = get_bits1(gb);
         mb_has_coeffs = idx_mbmode & 1;
         if (mb_has_coeffs)
-            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_ICBPCY_VLC_BITS, 2);
+            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_ICBPCY_VLC_BITS, 2);
         dst_idx = 0;
         for (i = 0; i < 6; i++) {
             v->a_avail = v->c_avail          = 0;
@@ -2118,7 +2118,7 @@ static int vc1_decode_b_mb_intfi(VC1Context *v)
             if (fwd)
                 bmvtype = BMV_TYPE_FORWARD;
             v->bmvtype  = bmvtype;
-            v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+            v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
             for (i = 0; i < 4; i++) {
                 dmv_x[0] = dmv_y[0] = pred_flag[0] = 0;
                 dmv_x[1] = dmv_y[1] = pred_flag[1] = 0;
@@ -2134,13 +2134,13 @@ static int vc1_decode_b_mb_intfi(VC1Context *v)
             mb_has_coeffs = idx_mbmode & 1;
         }
         if (mb_has_coeffs)
-            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
         if (cbp) {
             GET_MQUANT();
         }
         s->current_picture.qscale_table[mb_pos] = mquant;
         if (!v->ttmbf && cbp) {
-            ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+            ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
         }
         dst_idx = 0;
         for (i = 0; i < 6; i++) {
@@ -2200,7 +2200,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
         skipped = v->s.mbskip_table[mb_pos];
 
     if (!skipped) {
-        idx_mbmode = get_vlc2(gb, v->mbmode_vlc->table, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
+        idx_mbmode = get_vlc2(gb, v->mbmode_vlc, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 2);
         if (ff_vc1_mbmode_intfrp[0][idx_mbmode][0] == MV_PMODE_INTFR_2MV_FIELD) {
             twomv = 1;
             v->blk_mv_type[s->block_index[0]] = 1;
@@ -2228,7 +2228,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
         fieldtx = v->fieldtx_plane[mb_pos] = get_bits1(gb);
         mb_has_coeffs = get_bits1(gb);
         if (mb_has_coeffs)
-            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+            cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
         v->s.ac_pred = v->acpred_plane[mb_pos] = get_bits1(gb);
         GET_MQUANT();
         s->current_picture.qscale_table[mb_pos] = mquant;
@@ -2323,12 +2323,12 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
         if (!skipped) { // inter MB
             mb_has_coeffs = ff_vc1_mbmode_intfrp[0][idx_mbmode][3];
             if (mb_has_coeffs)
-                cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2);
+                cbp = 1 + get_vlc2(&v->s.gb, v->cbpcy_vlc, VC1_CBPCY_P_VLC_BITS, 2);
             if (!direct) {
                 if (bmvtype == BMV_TYPE_INTERPOLATED && twomv) {
-                    v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc->table, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
+                    v->fourmvbp = get_vlc2(gb, v->fourmvbp_vlc, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 1);
                 } else if (bmvtype == BMV_TYPE_INTERPOLATED || twomv) {
-                    v->twomvbp = get_vlc2(gb, v->twomvbp_vlc->table, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
+                    v->twomvbp = get_vlc2(gb, v->twomvbp_vlc, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 1);
                 }
             }
 
@@ -2438,7 +2438,7 @@ static int vc1_decode_b_mb_intfr(VC1Context *v)
                 GET_MQUANT();  // p. 227
             s->current_picture.qscale_table[mb_pos] = mquant;
             if (!v->ttmbf && cbp)
-                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2);
+                ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index], VC1_TTMB_VLC_BITS, 2);
             for (i = 0; i < 6; i++) {
                 s->dc_val[0][s->block_index[i]] = 0;
                 dst_idx += i >> 2;
diff --git a/libavcodec/vc1data.c b/libavcodec/vc1data.c
index 5ebf20a0f0..4046ea042f 100644
--- a/libavcodec/vc1data.c
+++ b/libavcodec/vc1data.c
@@ -102,26 +102,26 @@ const uint8_t ff_vc1_pquant_table[3][32] = {
  *  @todo TODO move this into the context
  */
 //@{
-VLC ff_vc1_imode_vlc;
-VLC ff_vc1_norm2_vlc;
-VLC ff_vc1_norm6_vlc;
+VLCElem ff_vc1_imode_vlc[1 << VC1_IMODE_VLC_BITS];
+VLCElem ff_vc1_norm2_vlc[1 << VC1_NORM2_VLC_BITS];
+VLCElem ff_vc1_norm6_vlc[556];
 /* Could be optimized, one table only needs 8 bits */
-VLC ff_vc1_ttmb_vlc[3];
-VLC ff_vc1_mv_diff_vlc[4];
-VLC ff_vc1_cbpcy_p_vlc[4];
-VLC ff_vc1_icbpcy_vlc[8];
-VLC ff_vc1_4mv_block_pattern_vlc[4];
-VLC ff_vc1_2mv_block_pattern_vlc[4];
-VLC ff_vc1_ttblk_vlc[3];
-VLC ff_vc1_subblkpat_vlc[3];
-VLC ff_vc1_intfr_4mv_mbmode_vlc[4];
-VLC ff_vc1_intfr_non4mv_mbmode_vlc[4];
-VLC ff_vc1_if_mmv_mbmode_vlc[8];
-VLC ff_vc1_if_1mv_mbmode_vlc[8];
-VLC ff_vc1_1ref_mvdata_vlc[4];
-VLC ff_vc1_2ref_mvdata_vlc[8];
+const VLCElem *ff_vc1_ttmb_vlc[3];
+const VLCElem *ff_vc1_mv_diff_vlc[4];
+const VLCElem *ff_vc1_cbpcy_p_vlc[4];
+const VLCElem *ff_vc1_icbpcy_vlc[8];
+const VLCElem *ff_vc1_4mv_block_pattern_vlc[4];
+const VLCElem *ff_vc1_2mv_block_pattern_vlc[4];
+const VLCElem *ff_vc1_ttblk_vlc[3];
+const VLCElem *ff_vc1_subblkpat_vlc[3];
+const VLCElem *ff_vc1_intfr_4mv_mbmode_vlc[4];
+const VLCElem *ff_vc1_intfr_non4mv_mbmode_vlc[4];
+const VLCElem *ff_vc1_if_mmv_mbmode_vlc[8];
+const VLCElem *ff_vc1_if_1mv_mbmode_vlc[8];
+const VLCElem *ff_vc1_1ref_mvdata_vlc[4];
+const VLCElem *ff_vc1_2ref_mvdata_vlc[8];
 
-VLC ff_vc1_ac_coeff_table[8];
+const VLCElem *ff_vc1_ac_coeff_table[8];
 
 //@}
 
diff --git a/libavcodec/vc1data.h b/libavcodec/vc1data.h
index 0900469ab2..e71593d023 100644
--- a/libavcodec/vc1data.h
+++ b/libavcodec/vc1data.h
@@ -56,42 +56,42 @@ extern const uint8_t ff_vc1_mbmode_intfrp[2][15][4];
  */
 //@{
 #define VC1_IMODE_VLC_BITS 4
-extern VLC ff_vc1_imode_vlc;
+extern VLCElem ff_vc1_imode_vlc[1 << VC1_IMODE_VLC_BITS];
 #define VC1_NORM2_VLC_BITS 3
-extern VLC ff_vc1_norm2_vlc;
+extern VLCElem ff_vc1_norm2_vlc[1 << VC1_NORM2_VLC_BITS];
 #define VC1_NORM6_VLC_BITS 9
-extern VLC ff_vc1_norm6_vlc;
+extern VLCElem ff_vc1_norm6_vlc[556];
 /* Could be optimized, one table only needs 8 bits */
 #define VC1_TTMB_VLC_BITS 9 //12
-extern VLC ff_vc1_ttmb_vlc[3];
+extern const VLCElem *ff_vc1_ttmb_vlc[3];
 #define VC1_MV_DIFF_VLC_BITS 9 //15
-extern VLC ff_vc1_mv_diff_vlc[4];
+extern const VLCElem *ff_vc1_mv_diff_vlc[4];
 #define VC1_CBPCY_P_VLC_BITS 9 //14
-extern VLC ff_vc1_cbpcy_p_vlc[4];
+extern const VLCElem *ff_vc1_cbpcy_p_vlc[4];
 #define VC1_ICBPCY_VLC_BITS 9
-extern VLC ff_vc1_icbpcy_vlc[8];
+extern const VLCElem *ff_vc1_icbpcy_vlc[8];
 #define VC1_4MV_BLOCK_PATTERN_VLC_BITS 6
-extern VLC ff_vc1_4mv_block_pattern_vlc[4];
+extern const VLCElem *ff_vc1_4mv_block_pattern_vlc[4];
 #define VC1_2MV_BLOCK_PATTERN_VLC_BITS 3
-extern VLC ff_vc1_2mv_block_pattern_vlc[4];
+extern const VLCElem *ff_vc1_2mv_block_pattern_vlc[4];
 #define VC1_TTBLK_VLC_BITS 5
-extern VLC ff_vc1_ttblk_vlc[3];
+extern const VLCElem *ff_vc1_ttblk_vlc[3];
 #define VC1_SUBBLKPAT_VLC_BITS 6
-extern VLC ff_vc1_subblkpat_vlc[3];
+extern const VLCElem *ff_vc1_subblkpat_vlc[3];
 #define VC1_INTFR_4MV_MBMODE_VLC_BITS 9
-extern VLC ff_vc1_intfr_4mv_mbmode_vlc[4];
+extern const VLCElem *ff_vc1_intfr_4mv_mbmode_vlc[4];
 #define VC1_INTFR_NON4MV_MBMODE_VLC_BITS 6
-extern VLC ff_vc1_intfr_non4mv_mbmode_vlc[4];
+extern const VLCElem *ff_vc1_intfr_non4mv_mbmode_vlc[4];
 #define VC1_IF_MMV_MBMODE_VLC_BITS 5
-extern VLC ff_vc1_if_mmv_mbmode_vlc[8];
+extern const VLCElem *ff_vc1_if_mmv_mbmode_vlc[8];
 #define VC1_IF_1MV_MBMODE_VLC_BITS 5
-extern VLC ff_vc1_if_1mv_mbmode_vlc[8];
+extern const VLCElem *ff_vc1_if_1mv_mbmode_vlc[8];
 #define VC1_1REF_MVDATA_VLC_BITS 9
-extern VLC ff_vc1_1ref_mvdata_vlc[4];
+extern const VLCElem *ff_vc1_1ref_mvdata_vlc[4];
 #define VC1_2REF_MVDATA_VLC_BITS 9
-extern VLC ff_vc1_2ref_mvdata_vlc[8];
+extern const VLCElem *ff_vc1_2ref_mvdata_vlc[8];
 
-extern VLC ff_vc1_ac_coeff_table[8];
+extern const VLCElem *ff_vc1_ac_coeff_table[8];
 
 #define VC1_IF_MBMODE_VLC_BITS 5    // as a placeholder for VC1_IF_MMV_MBMODE_VLC_BITS
                                     // or VC1_IF_1MV_MBMODE_VLC_BITS since they are the same
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 449d2fea5e..fe0158d1fa 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -470,122 +470,92 @@ av_cold void ff_vc1_init_transposed_scantables(VC1Context *v)
     v->top_blk_sh  = 3;
 }
 
-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,  8342,
-     9304,  9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
-    20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
-    27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
-    29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
-    31714, 31746, 31778, 32306, 32340, 32372
-};
-
 static av_cold void vc1_init_static(void)
 {
     static VLCElem vlc_table[32372];
-
-    VLC_INIT_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
-                    vc1_norm2_bits,  1, 1,
-                    vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
-    VLC_INIT_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
-                    vc1_norm6_bits,  1, 1,
-                    vc1_norm6_codes, 2, 2, 556);
-    VLC_INIT_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
-                    vc1_imode_bits,  1, 1,
-                    vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
+    VLCInitState state = VLC_INIT_STATE(vlc_table);
+
+    VLC_INIT_STATIC_TABLE(ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
+                          vc1_norm2_bits,  1, 1,
+                          vc1_norm2_codes, 1, 1, 0);
+    VLC_INIT_STATIC_TABLE(ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
+                          vc1_norm6_bits,  1, 1,
+                          vc1_norm6_codes, 2, 2, 0);
+    VLC_INIT_STATIC_TABLE(ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
+                          vc1_imode_bits,  1, 1,
+                          vc1_imode_codes, 1, 1, 0);
     for (int 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];
-        vlc_init(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
-                 vc1_ttmb_bits[i],  1, 1,
-                 vc1_ttmb_codes[i], 2, 2, VLC_INIT_USE_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];
-        vlc_init(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
-                 vc1_ttblk_bits[i],  1, 1,
-                 vc1_ttblk_codes[i], 1, 1, VLC_INIT_USE_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];
-        vlc_init(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
-                 vc1_subblkpat_bits[i],  1, 1,
-                 vc1_subblkpat_codes[i], 1, 1, VLC_INIT_USE_STATIC);
-    }
-    for (int 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];
-        vlc_init(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
-                 vc1_4mv_block_pattern_bits[i],  1, 1,
-                 vc1_4mv_block_pattern_codes[i], 1, 1, VLC_INIT_USE_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];
-        vlc_init(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
-                 vc1_cbpcy_p_bits[i],  1, 1,
-                 vc1_cbpcy_p_codes[i], 2, 2, VLC_INIT_USE_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];
-        vlc_init(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
-                 vc1_mv_diff_bits[i],  1, 1,
-                 vc1_mv_diff_codes[i], 2, 2, VLC_INIT_USE_STATIC);
-    }
-    for (int i = 0; i < 8; i++) {
-        ff_vc1_ac_coeff_table[i].table           = &vlc_table[vlc_offs[i * 2 + 21]];
-        ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];
-        vlc_init(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, ff_vc1_ac_sizes[i],
-                 &vc1_ac_tables[i][0][1], 8, 4,
-                 &vc1_ac_tables[i][0][0], 8, 4, VLC_INIT_USE_STATIC);
-        /* initialize interlaced MVDATA tables (2-Ref) */
-        ff_vc1_2ref_mvdata_vlc[i].table           = &vlc_table[vlc_offs[i * 2 + 22]];
-        ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];
-        vlc_init(&ff_vc1_2ref_mvdata_vlc[i], VC1_2REF_MVDATA_VLC_BITS, 126,
-                 vc1_2ref_mvdata_bits[i],  1, 1,
-                 vc1_2ref_mvdata_codes[i], 4, 4, VLC_INIT_USE_STATIC);
+        ff_vc1_ttmb_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_TTMB_VLC_BITS, 16,
+                               vc1_ttmb_bits[i],  1, 1,
+                               vc1_ttmb_codes[i], 2, 2, 0);
+        ff_vc1_ttblk_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_TTBLK_VLC_BITS, 8,
+                               vc1_ttblk_bits[i],  1, 1,
+                               vc1_ttblk_codes[i], 1, 1, 0);
+        ff_vc1_subblkpat_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_SUBBLKPAT_VLC_BITS, 15,
+                               vc1_subblkpat_bits[i],  1, 1,
+                               vc1_subblkpat_codes[i], 1, 1, 0);
     }
     for (int i = 0; i < 4; i++) {
+        ff_vc1_4mv_block_pattern_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
+                               vc1_4mv_block_pattern_bits[i],  1, 1,
+                               vc1_4mv_block_pattern_codes[i], 1, 1, 0);
+        ff_vc1_cbpcy_p_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_CBPCY_P_VLC_BITS, 64,
+                               vc1_cbpcy_p_bits[i],  1, 1,
+                               vc1_cbpcy_p_codes[i], 2, 2, 0);
+        ff_vc1_mv_diff_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_MV_DIFF_VLC_BITS, 73,
+                               vc1_mv_diff_bits[i],  1, 1,
+                               vc1_mv_diff_codes[i], 2, 2, 0);
         /* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
-        ff_vc1_intfr_4mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 37]];
-        ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];
-        vlc_init(&ff_vc1_intfr_4mv_mbmode_vlc[i], VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
-                 vc1_intfr_4mv_mbmode_bits[i],  1, 1,
-                 vc1_intfr_4mv_mbmode_codes[i], 2, 2, VLC_INIT_USE_STATIC);
+        ff_vc1_intfr_4mv_mbmode_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
+                               vc1_intfr_4mv_mbmode_bits[i],  1, 1,
+                               vc1_intfr_4mv_mbmode_codes[i], 2, 2, 0);
         /* initialize NON-4MV MBMODE VLC tables for the same */
-        ff_vc1_intfr_non4mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 38]];
-        ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];
-        vlc_init(&ff_vc1_intfr_non4mv_mbmode_vlc[i], VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
-                 vc1_intfr_non4mv_mbmode_bits[i],  1, 1,
-                 vc1_intfr_non4mv_mbmode_codes[i], 1, 1, VLC_INIT_USE_STATIC);
+        ff_vc1_intfr_non4mv_mbmode_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
+                               vc1_intfr_non4mv_mbmode_bits[i],  1, 1,
+                               vc1_intfr_non4mv_mbmode_codes[i], 1, 1, 0);
         /* initialize interlaced MVDATA tables (1-Ref) */
-        ff_vc1_1ref_mvdata_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 39]];
-        ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];
-        vlc_init(&ff_vc1_1ref_mvdata_vlc[i], VC1_1REF_MVDATA_VLC_BITS, 72,
-                 vc1_1ref_mvdata_bits[i],  1, 1,
-                 vc1_1ref_mvdata_codes[i], 4, 4, VLC_INIT_USE_STATIC);
-    }
-    for (int i = 0; i < 4; i++) {
+        ff_vc1_1ref_mvdata_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_1REF_MVDATA_VLC_BITS, 72,
+                               vc1_1ref_mvdata_bits[i],  1, 1,
+                               vc1_1ref_mvdata_codes[i], 4, 4, 0);
         /* Initialize 2MV Block pattern VLC tables */
-        ff_vc1_2mv_block_pattern_vlc[i].table           = &vlc_table[vlc_offs[i + 49]];
-        ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];
-        vlc_init(&ff_vc1_2mv_block_pattern_vlc[i], VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
-                 vc1_2mv_block_pattern_bits[i],  1, 1,
-                 vc1_2mv_block_pattern_codes[i], 1, 1, VLC_INIT_USE_STATIC);
+        ff_vc1_2mv_block_pattern_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
+                               vc1_2mv_block_pattern_bits[i],  1, 1,
+                               vc1_2mv_block_pattern_codes[i], 1, 1, 0);
     }
     for (int i = 0; i < 8; i++) {
+        ff_vc1_ac_coeff_table[i] =
+            ff_vlc_init_tables(&state, AC_VLC_BITS, ff_vc1_ac_sizes[i],
+                               &vc1_ac_tables[i][0][1], 8, 4,
+                               &vc1_ac_tables[i][0][0], 8, 4, 0);
+        /* initialize interlaced MVDATA tables (2-Ref) */
+        ff_vc1_2ref_mvdata_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_2REF_MVDATA_VLC_BITS, 126,
+                               vc1_2ref_mvdata_bits[i],  1, 1,
+                               vc1_2ref_mvdata_codes[i], 4, 4, 0);
         /* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
-        ff_vc1_icbpcy_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 53]];
-        ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];
-        vlc_init(&ff_vc1_icbpcy_vlc[i], VC1_ICBPCY_VLC_BITS, 63,
-                 vc1_icbpcy_p_bits[i],  1, 1,
-                 vc1_icbpcy_p_codes[i], 2, 2, VLC_INIT_USE_STATIC);
+        ff_vc1_icbpcy_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_ICBPCY_VLC_BITS, 63,
+                               vc1_icbpcy_p_bits[i],  1, 1,
+                               vc1_icbpcy_p_codes[i], 2, 2, 0);
         /* Initialize interlaced field picture MBMODE VLC tables */
-        ff_vc1_if_mmv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 54]];
-        ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];
-        vlc_init(&ff_vc1_if_mmv_mbmode_vlc[i], VC1_IF_MMV_MBMODE_VLC_BITS, 8,
-                 vc1_if_mmv_mbmode_bits[i],  1, 1,
-                 vc1_if_mmv_mbmode_codes[i], 1, 1, VLC_INIT_USE_STATIC);
-        ff_vc1_if_1mv_mbmode_vlc[i].table           = &vlc_table[vlc_offs[i * 3 + 55]];
-        ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];
-        vlc_init(&ff_vc1_if_1mv_mbmode_vlc[i], VC1_IF_1MV_MBMODE_VLC_BITS, 6,
-                 vc1_if_1mv_mbmode_bits[i],  1, 1,
-                 vc1_if_1mv_mbmode_codes[i], 1, 1, VLC_INIT_USE_STATIC);
+        ff_vc1_if_mmv_mbmode_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_IF_MMV_MBMODE_VLC_BITS, 8,
+                               vc1_if_mmv_mbmode_bits[i],  1, 1,
+                               vc1_if_mmv_mbmode_codes[i], 1, 1, 0);
+        ff_vc1_if_1mv_mbmode_vlc[i] =
+            ff_vlc_init_tables(&state, VC1_IF_1MV_MBMODE_VLC_BITS, 6,
+                               vc1_if_1mv_mbmode_bits[i],  1, 1,
+                               vc1_if_1mv_mbmode_codes[i], 1, 1, 0);
     }
     ff_msmp4_vc1_vlcs_init_once();
 }
-- 
2.34.1

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