diff --git a/libavcodec/vvc/Makefile b/libavcodec/vvc/Makefile
index b2b187ac6f..6c03ba19ac 100644
--- a/libavcodec/vvc/Makefile
+++ b/libavcodec/vvc/Makefile
@@ -2,5 +2,7 @@ clean::
 	$(RM) $(CLEANSUFFIXES:%=libavcodec/vvc/%)
 
 OBJS-$(CONFIG_VVC_DECODER)          +=  vvc/vvcdec.o            \
+                                        vvc/vvc_cabac.o         \
+                                        vvc/vvc_ctu.o           \
                                         vvc/vvc_data.o          \
                                         vvc/vvc_ps.o            \
diff --git a/libavcodec/vvc/vvc_cabac.c b/libavcodec/vvc/vvc_cabac.c
new file mode 100644
index 0000000000..7275f44c4d
--- /dev/null
+++ b/libavcodec/vvc/vvc_cabac.c
@@ -0,0 +1,2484 @@
+/*
+ * VVC CABAC decoder
+ *
+ * Copyright (C) 2021 Nuo Mi
+ *
+ * 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
+ */
+#include "libavcodec/cabac_functions.h"
+
+#include "vvc_cabac.h"
+#include "vvc_ctu.h"
+#include "vvc_data.h"
+
+#define CABAC_MAX_BIN 31
+
+#define CNU 35
+
+enum SyntaxElement {
+    ALF_CTB_FLAG                    =                                 0,
+    ALF_USE_APS_FLAG                = ALF_CTB_FLAG                  + 9,
+    ALF_CTB_CC_CB_IDC,
+    ALF_CTB_CC_CR_IDC               = ALF_CTB_CC_CB_IDC             + 3,
+    ALF_CTB_FILTER_ALT_IDX          = ALF_CTB_CC_CR_IDC             + 3,
+    SAO_MERGE_FLAG                  = ALF_CTB_FILTER_ALT_IDX        + 2,
+    SAO_TYPE_IDX,
+    SPLIT_CU_FLAG,
+    SPLIT_QT_FLAG                   = SPLIT_CU_FLAG                 + 9,
+    MTT_SPLIT_CU_VERTICAL_FLAG      = SPLIT_QT_FLAG                 + 6,
+    MTT_SPLIT_CU_BINARY_FLAG        = MTT_SPLIT_CU_VERTICAL_FLAG    + 5,
+    NON_INTER_FLAG                  = MTT_SPLIT_CU_BINARY_FLAG      + 4,
+    CU_SKIP_FLAG                    = NON_INTER_FLAG                + 2,
+    PRED_MODE_IBC_FLAG              = CU_SKIP_FLAG                  + 3,
+    PRED_MODE_FLAG                  = PRED_MODE_IBC_FLAG            + 3,
+    PRED_MODE_PLT_FLAG              = PRED_MODE_FLAG                + 2,
+    CU_ACT_ENABLED_FLAG,
+    INTRA_BDPCM_LUMA_FLAG,
+    INTRA_BDPCM_LUMA_DIR_FLAG,
+    INTRA_MIP_FLAG,
+    INTRA_LUMA_REF_IDX              = INTRA_MIP_FLAG                + 4,
+    INTRA_SUBPARTITIONS_MODE_FLAG   = INTRA_LUMA_REF_IDX            + 2,
+    INTRA_SUBPARTITIONS_SPLIT_FLAG,
+    INTRA_LUMA_MPM_FLAG,
+    INTRA_LUMA_NOT_PLANAR_FLAG,
+    INTRA_BDPCM_CHROMA_FLAG         = INTRA_LUMA_NOT_PLANAR_FLAG    + 2,
+    INTRA_BDPCM_CHROMA_DIR_FLAG,
+    CCLM_MODE_FLAG,
+    CCLM_MODE_IDX,
+    INTRA_CHROMA_PRED_MODE,
+    GENERAL_MERGE_FLAG,
+    INTER_PRED_IDC,
+    INTER_AFFINE_FLAG               = INTER_PRED_IDC                + 6,
+    CU_AFFINE_TYPE_FLAG             = INTER_AFFINE_FLAG             + 3,
+    SYM_MVD_FLAG,
+    REF_IDX_LX,
+    MVP_LX_FLAG                     = REF_IDX_LX                    + 2,
+    AMVR_FLAG,
+    AMVR_PRECISION_IDX              = AMVR_FLAG                     + 2,
+    BCW_IDX                         = AMVR_PRECISION_IDX            + 3,
+    CU_CODED_FLAG,
+    CU_SBT_FLAG,
+    CU_SBT_QUAD_FLAG                = CU_SBT_FLAG                   + 2,
+    CU_SBT_HORIZONTAL_FLAG,
+    CU_SBT_POS_FLAG                 = CU_SBT_HORIZONTAL_FLAG        + 3,
+    LFNST_IDX,
+    MTS_IDX                         = LFNST_IDX                     + 3,
+    COPY_ABOVE_PALETTE_INDICES_FLAG = MTS_IDX                       + 4,
+    PALETTE_TRANSPOSE_FLAG,
+    RUN_COPY_FLAG,
+    REGULAR_MERGE_FLAG              = RUN_COPY_FLAG                 + 8,
+    MMVD_MERGE_FLAG                 = REGULAR_MERGE_FLAG            + 2,
+    MMVD_CAND_FLAG,
+    MMVD_DISTANCE_IDX,
+    CIIP_FLAG,
+    MERGE_SUBBLOCK_FLAG,
+    MERGE_SUBBLOCK_IDX              = MERGE_SUBBLOCK_FLAG           + 3,
+    MERGE_IDX,
+    ABS_MVD_GREATER0_FLAG,
+    ABS_MVD_GREATER1_FLAG,
+    TU_Y_CODED_FLAG,
+    TU_CB_CODED_FLAG                = TU_Y_CODED_FLAG               + 4,
+    TU_CR_CODED_FLAG                = TU_CB_CODED_FLAG              + 2,
+    CU_QP_DELTA_ABS                 = TU_CR_CODED_FLAG              + 3,
+    CU_CHROMA_QP_OFFSET_FLAG        = CU_QP_DELTA_ABS               + 2,
+    CU_CHROMA_QP_OFFSET_IDX,
+    TRANSFORM_SKIP_FLAG,
+    TU_JOINT_CBCR_RESIDUAL_FLAG     = TRANSFORM_SKIP_FLAG           + 2,
+    LAST_SIG_COEFF_X_PREFIX         = TU_JOINT_CBCR_RESIDUAL_FLAG   + 3,
+    LAST_SIG_COEFF_Y_PREFIX         = LAST_SIG_COEFF_X_PREFIX       +23,
+    SB_CODED_FLAG                   = LAST_SIG_COEFF_Y_PREFIX       +23,
+    SIG_COEFF_FLAG                  = SB_CODED_FLAG                 + 7,
+    PAR_LEVEL_FLAG                  = SIG_COEFF_FLAG                +63,
+    ABS_LEVEL_GTX_FLAG              = PAR_LEVEL_FLAG                +33,
+    COEFF_SIGN_FLAG                 = ABS_LEVEL_GTX_FLAG            +72,
+    SYNTAX_ELEMENT_LAST             = COEFF_SIGN_FLAG               + 6,
+};
+
+static const uint8_t init_values[4][SYNTAX_ELEMENT_LAST] = {
+    {
+        //alf_ctb_flag
+        62,  39,  39,  54,  39,  39,  31,  39,  39,
+        //alf_use_aps_flag
+        46,
+        //alf_ctb_cc_cb_idc
+        18,  30,  31,
+        //alf_ctb_cc_cr_idc
+        18,  30,  31,
+        //alf_ctb_filter_alt_idx
+        11,  11,
+        //sao_merge_left_flag and sao_merge_up_flag
+        60,
+        //sao_type_idx_luma and sao_type_idx_chroma
+        13,
+        //split_cu_flag
+        19,  28,  38,  27,  29,  38,  20,  30,  31,
+        //split_qt_flag
+        27,   6,  15,  25,  19,  37,
+        //mtt_split_cu_vertical_flag
+        43,  42,  29,  27,  44,
+        //mtt_split_cu_binary_flag
+        36,  45,  36,  45,
+        //non_inter_flag
+        CNU, CNU,
+        //cu_skip_flag
+        0,  26,  28,
+        //pred_mode_ibc_flag
+        17,  42,  36,
+        //pred_mode_flag
+        CNU, CNU,
+        //pred_mode_plt_flag
+        25,
+        //cu_act_enabled_flag
+        52,
+        //intra_bdpcm_luma_flag
+        19,
+        //intra_bdpcm_luma_dir_flag
+        35,
+        //intra_mip_flag
+        33,  49,  50,  25,
+        //intra_luma_ref_idx
+        25,  60,
+        //intra_subpartitions_mode_flag
+        33,
+        //intra_subpartitions_split_flag
+        43,
+        //intra_luma_mpm_flag
+        45,
+        //intra_luma_not_planar_flag
+        13,  28,
+        //intra_bdpcm_chroma_flag
+         1,
+        //intra_bdpcm_chroma_dir_flag
+        27,
+        //cclm_mode_flag
+        59,
+        //cclm_mode_idx
+        27,
+        //intra_chroma_pred_mode
+        34,
+        //general_merge_flag
+        26,
+        //inter_pred_idc
+        CNU, CNU, CNU, CNU, CNU, CNU,
+        //inter_affine_flag
+        CNU, CNU, CNU,
+        //cu_affine_type_flag
+        CNU,
+        //sym_mvd_flag
+        CNU,
+        //ref_idx_l0 and ref_idx_l1
+        CNU, CNU,
+        //mvp_l0_flag and mvp_l1_flag
+        42,
+        //amvr_flag
+        CNU, CNU,
+        //amvr_precision_idx
+        35,  34,  35,
+        //bcw_idx
+        CNU,
+        //cu_coded_flag
+         6,
+        //cu_sbt_flag
+        CNU, CNU,
+        //cu_sbt_quad_flag
+        CNU,
+        //cu_sbt_horizontal_flag
+        CNU, CNU, CNU,
+        //cu_sbt_pos_flag
+        CNU,
+        //lfnst_idx
+        28,  52,  42,
+        //mts_idx
+        29,   0,  28,   0,
+        //copy_above_palette_indices_flag
+        42,
+        //palette_transpose_flag
+        42,
+        //run_copy_flag
+        50,  37,  45,  30,  46,  45,  38,  46,
+        //regular_merge_flag
+        CNU, CNU,
+        //mmvd_merge_flag
+        CNU,
+        //mmvd_cand_flag
+        CNU,
+        //mmvd_distance_idx
+        CNU,
+        //ciip_flag
+        CNU,
+        //merge_subblock_flag
+        CNU, CNU, CNU,
+        //merge_subblock_idx
+        CNU,
+        //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
+        34,
+        //abs_mvd_greater0_flag
+        14,
+        //abs_mvd_greater1_flag
+        45,
+        //tu_y_coded_flag
+        15,  12,   5,   7,
+        //tu_cb_coded_flag
+        12,  21,
+        //tu_cr_coded_flag
+        33,  28,  36,
+        //cu_qp_delta_abs
+        CNU, CNU,
+        //cu_chroma_qp_offset_flag
+        CNU,
+        //cu_chroma_qp_offset_idx
+        CNU,
+        //transform_skip_flag
+        25,   9,
+        //tu_joint_cbcr_residual_flag
+        12,  21,  35,
+        //last_sig_coeff_x_prefix
+        13,   5,   4,  21,  14,   4,   6,  14,  21,  11,  14,   7,  14,   5,  11,  21,
+        30,  22,  13,  42,  12,   4,   3,
+        //last_sig_coeff_y_prefix
+        13,   5,   4,   6,  13,  11,  14,   6,   5,   3,  14,  22,   6,   4,   3,   6,
+        22,  29,  20,  34,  12,   4,   3,
+        //sb_coded_flag
+        18,  31,  25,  15,  18,  20,  38,
+        //sig_coeff_flag
+        25,  19,  28,  14,  25,  20,  29,  30,  19,  37,  30,  38,  11,  38,  46,  54,
+        27,  39,  39,  39,  44,  39,  39,  39,  18,  39,  39,  39,  27,  39,  39,  39,
+         0,  39,  39,  39,  25,  27,  28,  37,  34,  53,  53,  46,  19,  46,  38,  39,
+        52,  39,  39,  39,  11,  39,  39,  39,  19,  39,  39,  39,  25,  28,  38,
+        //par_level_flag
+        33,  25,  18,  26,  34,  27,  25,  26,  19,  42,  35,  33,  19,  27,  35,  35,
+        34,  42,  20,  43,  20,  33,  25,  26,  42,  19,  27,  26,  50,  35,  20,  43,
+        11,
+        //abs_level_gtx_flag
+        25,  25,  11,  27,  20,  21,  33,  12,  28,  21,  22,  34,  28,  29,  29,  30,
+        36,  29,  45,  30,  23,  40,  33,  27,  28,  21,  37,  36,  37,  45,  38,  46,
+        25,   1,  40,  25,  33,  11,  17,  25,  25,  18,   4,  17,  33,  26,  19,  13,
+        33,  19,  20,  28,  22,  40,   9,  25,  18,  26,  35,  25,  26,  35,  28,  37,
+        11,   5,   5,  14,  10,   3,   3,   3,
+        //coeff_sign_flag
+        12,  17,  46,  28,  25,  46,
+    },
+    {
+        //alf_ctb_flag
+        13,  23,  46,   4,  61,  54,  19,  46,  54,
+        //alf_use_aps_flag
+        46,
+        //alf_ctb_cc_cb_idc
+        18,  21,  38,
+        //alf_ctb_cc_cr_idc
+        18,  21,  38,
+        //alf_ctb_filter_alt_idx
+        20,  12,
+        //sao_merge_left_flag and sao_merge_up_flag
+        60,
+        //sao_type_idx_luma and sao_type_idx_chroma
+        5,
+        //split_cu_flag
+        11,  35,  53,  12,   6,  30,  13,  15,  31,
+        //split_qt_flag
+        20,  14,  23,  18,  19,   6,
+        //mtt_split_cu_vertical_flag
+        43,  35,  37,  34,  52,
+        //mtt_split_cu_binary_flag
+        43,  37,  21,  22,
+        //non_inter_flag
+        25,  12,
+        //cu_skip_flag
+        57,  59,  45,
+        //pred_mode_ibc_flag
+         0,  57,  44,
+        //pred_mode_flag
+        40,  35,
+        //pred_mode_plt_flag
+        0,
+        //cu_act_enabled_flag
+        46,
+        //intra_bdpcm_luma_flag
+        40,
+        //intra_bdpcm_luma_dir_flag
+        36,
+        //intra_mip_flag
+        41,  57,  58,  26,
+        //intra_luma_ref_idx
+        25,  58,
+        //intra_subpartitions_mode_flag
+        33,
+        //intra_subpartitions_split_flag
+        36,
+        //intra_luma_mpm_flag
+        36,
+        //intra_luma_not_planar_flag
+        12,  20,
+        //intra_bdpcm_chroma_flag
+         0,
+        //intra_bdpcm_chroma_dir_flag
+        13,
+        //cclm_mode_flag
+        34,
+        //cclm_mode_idx
+        27,
+        //intra_chroma_pred_mode
+        25,
+        //general_merge_flag
+        21,
+        //inter_pred_idc
+         7,   6,   5,  12,   4,  40,
+        //inter_affine_flag
+        12,  13,  14,
+        //cu_affine_type_flag
+        35,
+        //sym_mvd_flag
+        28,
+        //ref_idx_l0 and ref_idx_l1
+        20,  35,
+        //mvp_l0_flag and mvp_l1_flag
+        34,
+        //amvr_flag
+        59,  58,
+        //amvr_precision_idx
+        60,  48,  60,
+        //bcw_idx
+         4,
+        //cu_coded_flag
+         5,
+        //cu_sbt_flag
+        56,  57,
+        //cu_sbt_quad_flag
+        42,
+        //cu_sbt_horizontal_flag
+        20,  43,  12,
+        //cu_sbt_pos_flag
+        28,
+        //lfnst_idx
+        37,  45,  27,
+        //mts_idx
+        45,  40,  27,   0,
+        //copy_above_palette_indices_flag
+        59,
+        //palette_transpose_flag
+        42,
+        //run_copy_flag
+        51,  30,  30,  38,  23,  38,  53,  46,
+        //regular_merge_flag
+        38,   7,
+        //mmvd_merge_flag
+        26,
+        //mmvd_cand_flag
+        43,
+        //mmvd_distance_idx
+        60,
+        //ciip_flag
+        57,
+        //merge_subblock_flag
+        48,  57,  44,
+        //merge_subblock_idx
+         5,
+        //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
+        20,
+        //abs_mvd_greater0_flag
+        44,
+        //abs_mvd_greater1_flag
+        43,
+        //tu_y_coded_flag
+        23,   5,  20,   7,
+        //tu_cb_coded_flag
+        25,  28,
+        //tu_cr_coded_flag
+        25,  29,  45,
+        //cu_qp_delta_abs
+        CNU, CNU,
+        //cu_chroma_qp_offset_flag
+        CNU,
+        //cu_chroma_qp_offset_idx
+        CNU,
+        //transform_skip_flag
+        25,   9,
+        //tu_joint_cbcr_residual_flag
+        27,  36,  45,
+        //last_sig_coeff_x_prefix
+         6,  13,  12,   6,   6,  12,  14,  14,  13,  12,  29,   7,   6,  13,  36,  28,
+        14,  13,   5,  26,  12,   4,  18,
+        //last_sig_coeff_y_prefix
+         5,   5,  12,   6,   6,   4,   6,  14,   5,  12,  14,   7,  13,   5,  13,  21,
+        14,  20,  12,  34,  11,   4,  18,
+        //sb_coded_flag
+        25,  30,  25,  45,  18,  12,  29,
+        //sig_coeff_flag
+        17,  41,  42,  29,  25,  49,  43,  37,  33,  58,  51,  30,  19,  38,  38,  46,
+        34,  54,  54,  39,   6,  39,  39,  39,  19,  39,  54,  39,  19,  39,  39,  39,
+        56,  39,  39,  39,  17,  34,  35,  21,  41,  59,  60,  38,  35,  45,  53,  54,
+        44,  39,  39,  39,  34,  38,  62,  39,  26,  39,  39,  39,  40,  35,  44,
+        //par_level_flag
+        18,  17,  33,  18,  26,  42,  25,  33,  26,  42,  27,  25,  34,  42,  42,  35,
+        26,  27,  42,  20,  20,  25,  25,  26,  11,  19,  27,  33,  42,  35,  35,  43,
+         3,
+        //abs_level_gtx_flag
+         0,  17,  26,  19,  35,  21,  25,  34,  20,  28,  29,  33,  27,  28,  29,  22,
+        34,  28,  44,  37,  38,   0,  25,  19,  20,  13,  14,  57,  44,  30,  30,  23,
+        17,   0,   1,  17,  25,  18,   0,   9,  25,  33,  34,   9,  25,  18,  26,  20,
+        25,  18,  19,  27,  29,  17,   9,  25,  10,  18,   4,  17,  33,  19,  20,  29,
+        18,  11,   4,  28,   2,  10,   3,   3,
+        //coeff_sign_flag
+         5,  10,  53,  43,  25,  46,
+    },
+    {
+        //alf_ctb_flag
+        33,  52,  46,  25,  61,  54,  25,  61,  54,
+        //alf_use_aps_flag
+        46,
+        //alf_ctb_cc_cb_idc
+        25,  35,  38,
+        //alf_ctb_cc_cr_idc
+        25,  28,  38,
+        //alf_ctb_filter_alt_idx
+        11,  26,
+        //sao_merge_left_flag and sao_merge_up_flag
+        2,
+        //sao_type_idx_luma and sao_type_idx_chroma
+        2,
+        //split_cu_flag
+        18,  27,  15,  18,  28,  45,  26,   7,  23,
+        //split_qt_flag
+        26,  36,  38,  18,  34,  21,
+        //mtt_split_cu_vertical_flag
+        43,  42,  37,  42,  44,
+        //mtt_split_cu_binary_flag
+        28,  29,  28,  29,
+        //non_inter_flag
+        25,  20,
+        //cu_skip_flag
+        57,  60,  46,
+        //pred_mode_ibc_flag
+         0,  43,  45,
+        //pred_mode_flag
+        40,  35,
+        //pred_mode_plt_flag
+        17,
+        //cu_act_enabled_flag
+        46,
+        //intra_bdpcm_luma_flag
+        19,
+        //intra_bdpcm_luma_dir_flag
+        21,
+        //intra_mip_flag
+        56,  57,  50,  26,
+        //intra_luma_ref_idx
+        25,  59,
+        //intra_subpartitions_mode_flag
+        33,
+        //intra_subpartitions_split_flag
+        43,
+        //intra_luma_mpm_flag
+        44,
+        //intra_luma_not_planar_flag
+        13,   6,
+        //intra_bdpcm_chroma_flag
+         0,
+        //intra_bdpcm_chroma_dir_flag
+        28,
+        //cclm_mode_flag
+        26,
+        //cclm_mode_idx
+        27,
+        //intra_chroma_pred_mode
+        25,
+        //general_merge_flag
+         6,
+        //inter_pred_idc
+        14,  13,   5,   4,   3,  40,
+        //inter_affine_flag
+        19,  13,   6,
+        //cu_affine_type_flag
+        35,
+        //sym_mvd_flag
+        28,
+        //ref_idx_l0 and ref_idx_l1
+         5,  35,
+        //mvp_l0_flag and mvp_l1_flag
+        34,
+        //amvr_flag
+        59,  50,
+        //amvr_precision_idx
+        38,  26,  60,
+        //bcw_idx
+         5,
+        //cu_coded_flag
+        12,
+        //cu_sbt_flag
+        41,  57,
+        //cu_sbt_quad_flag
+        42,
+        //cu_sbt_horizontal_flag
+        35,  51,  27,
+        //cu_sbt_pos_flag
+        28,
+        //lfnst_idx
+        52,  37,  27,
+        //mts_idx
+        45,  25,  27,   0,
+        //copy_above_palette_indices_flag
+        50,
+        //palette_transpose_flag
+        35,
+        //run_copy_flag
+        58,  45,  45,  30,  38,  45,  38,  46,
+        //regular_merge_flag
+        46,  15,
+        //mmvd_merge_flag
+        25,
+        //mmvd_cand_flag
+        43,
+        //mmvd_distance_idx
+        59,
+        //ciip_flag
+        57,
+        //merge_subblock_flag
+        25,  58,  45,
+        //merge_subblock_idx
+         4,
+        //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
+        18,
+        //abs_mvd_greater0_flag
+        51,
+        //abs_mvd_greater1_flag
+        36,
+        //tu_y_coded_flag
+        15,   6,   5,  14,
+        //tu_cb_coded_flag
+        25,  37,
+        //tu_cr_coded_flag
+         9,  36,  45,
+        //cu_qp_delta_abs
+        CNU, CNU,
+        //cu_chroma_qp_offset_flag
+        CNU,
+        //cu_chroma_qp_offset_idx
+        CNU,
+        //transform_skip_flag
+        25,  17,
+        //tu_joint_cbcr_residual_flag
+        42,  43,  52,
+        //last_sig_coeff_x_prefix
+         6,   6,  12,  14,   6,   4,  14,   7,   6,   4,  29,   7,   6,   6,  12,  28,
+         7,  13,  13,  35,  19,   5,   4,
+        //last_sig_coeff_y_prefix
+         5,   5,  20,  13,  13,  19,  21,   6,  12,  12,  14,  14,   5,   4,  12,  13,
+         7,  13,  12,  41,  11,   5,  27,
+        //sb_coded_flag
+        25,  45,  25,  14,  18,  35,  45,
+        //sig_coeff_flag
+        17,  41,  49,  36,   1,  49,  50,  37,  48,  51,  58,  45,  26,  45,  53,  46,
+        49,  54,  61,  39,  35,  39,  39,  39,  19,  54,  39,  39,  50,  39,  39,  39,
+         0,  39,  39,  39,   9,  49,  50,  36,  48,  59,  59,  38,  34,  45,  38,  31,
+        58,  39,  39,  39,  34,  38,  54,  39,  41,  39,  39,  39,  25,  50,  37,
+        //par_level_flag
+        33,  40,  25,  41,  26,  42,  25,  33,  26,  34,  27,  25,  41,  42,  42,  35,
+        33,  27,  35,  42,  43,  33,  25,  26,  34,  19,  27,  33,  42,  43,  35,  43,
+        11,
+        //abs_level_gtx_flag
+         0,   0,  33,  34,  35,  21,  25,  34,  35,  28,  29,  40,  42,  43,  29,  30,
+        49,  36,  37,  45,  38,   0,  40,  34,  43,  36,  37,  57,  52,  45,  38,  46,
+        25,   0,   0,  17,  25,  26,   0,   9,  25,  33,  19,   0,  25,  33,  26,  20,
+        25,  33,  27,  35,  22,  25,   1,  25,  33,  26,  12,  25,  33,  27,  28,  37,
+        19,  11,   4,   6,   3,   4,   4,   5,
+        //coeff_sign_flag
+        35,  25,  46,  28,  33,  38,
+    },
+    //shiftIdx
+    {
+        //alf_ctb_flag
+         0,   0,   0,   4,   0,   0,   1,   0,   0,
+        //alf_use_aps_flag
+         0,
+        //alf_ctb_cc_cb_idc
+         4,   1,   4,
+        //alf_ctb_cc_cr_idc
+         4,   1,   4,
+        //alf_ctb_filter_alt_idx
+         0,   0,
+        //sao_merge_left_flag and sao_merge_up_flag
+         0,
+        //sao_type_idx_luma and sao_type_idx_chroma
+         4,
+        //split_cu_flag
+        12,  13,   8,   8,  13,  12,   5,   9,   9,
+        //split_qt_flag
+         0,   8,   8,  12,  12,   8,
+        //mtt_split_cu_vertical_flag
+         9,   8,   9,   8,   5,
+        //mtt_split_cu_binary_flag
+        12,  13,  12,  13,
+        //non_inter_flag
+         1,   0,
+        //cu_skip_flag
+         5,   4,   8,
+        //pred_mode_ibc_flag
+         1,   5,   8,
+        //pred_mode_flag
+         5,   1,
+        //pred_mode_plt_flag
+         1,
+        //cu_act_enabled_flag
+         1,
+        //intra_bdpcm_luma_flag
+         1,
+        //intra_bdpcm_luma_dir_flag
+         4,
+        //intra_mip_flag
+         9,  10,   9,   6,
+        //intra_luma_ref_idx
+         5,   8,
+        //intra_subpartitions_mode_flag
+         9,
+        //intra_subpartitions_split_flag
+         2,
+        //intra_luma_mpm_flag
+         6,
+        //intra_luma_not_planar_flag
+         1,   5,
+        //intra_bdpcm_chroma_flag
+         1,
+        //intra_bdpcm_chroma_dir_flag
+         0,
+        //cclm_mode_flag
+         4,
+        //cclm_mode_idx
+         9,
+        //intra_chroma_pred_mode
+         5,
+        //general_merge_flag
+         4,
+        //inter_pred_idc
+         0,   0,   1,   4,   4,   0,
+        //inter_affine_flag
+         4,   0,   0,
+        //cu_affine_type_flag
+         4,
+        //sym_mvd_flag
+         5,
+        //ref_idx_l0 and ref_idx_l1
+         0,   4,
+        //mvp_l0_flag and mvp_l1_flag
+        12,
+        //amvr_flag
+         0,   0,
+        //amvr_precision_idx
+         4,   5,  0,
+        //bcw_idx
+         1,
+        //cu_coded_flag
+         4,
+        //cu_sbt_flag
+         1,   5,
+        //cu_sbt_quad_flag
+        10,
+        //cu_sbt_horizontal_flag
+         8,   4,   1,
+        //cu_sbt_pos_flag
+        13,
+        //lfnst_idx
+         9,   9,  10,
+        //mts_idx
+         8,   0,   9,   0,
+        //copy_above_palette_indices_flag
+         9,
+        //palette_transpose_flag
+         5,
+        //run_copy_flag
+         9,   6,   9,  10,   5,   0,   9,   5,
+        //regular_merge_flag
+         5,   5,
+        //mmvd_merge_flag
+         4,
+        //mmvd_cand_flag
+        10,
+        //mmvd_distance_idx
+         0,
+        //ciip_flag
+         1,
+        //merge_subblock_flag
+         4,   4,   4,
+        //merge_subblock_idx
+         0,
+        //merge_idx, merge_gpm_idx0, and merge_gpm_idx1
+         4,
+        //abs_mvd_greater0_flag
+         9,
+        //abs_mvd_greater1_flag
+         5,
+        //tu_y_coded_flag
+         5,   1,   8,   9,
+        //tu_cb_coded_flag
+         5,   0,
+        //tu_cr_coded_flag
+         2,   1,   0,
+        //cu_qp_delta_abs
+         8,   8,
+        //cu_chroma_qp_offset_flag
+         8,
+        //cu_chroma_qp_offset_idx
+         8,
+        //transform_skip_flag
+         1,   1,
+        //tu_joint_cbcr_residual_flag
+         1,   1,   0,
+        //last_sig_coeff_x_prefix
+         8,   5,   4,   5,   4,   4,   5,   4,   1,   0,   4,   1,   0,   0,   0,   0,
+         1,   0,   0,   0,   5,   4,   4,
+        //last_sig_coeff_y_prefix
+         8,   5,   8,   5,   5,   4,   5,   5,   4,   0,   5,   4,   1,   0,   0,   1,
+         4,   0,   0,   0,   6,   5,   5,
+        //sb_coded_flag
+         8,   5,   5,   8,   5,   8,   8,
+        //sig_coeff_flag
+        12,   9,   9,  10,   9,   9,   9,  10,   8,   8,   8,  10,   9,  13,   8,   8,
+         8,   8,   8,   5,   8,   0,   0,   0,   8,   8,   8,   8,   8,   0,   4,   4,
+         0,   0,   0,   0,  12,  12,   9,  13,   4,   5,   8,   9,   8,  12,  12,   8,
+         4,   0,   0,   0,   8,   8,   8,   8,   4,   0,   0,   0,  13,  13,   8,
+        //par_level_flag
+         8,   9,  12,  13,  13,  13,  10,  13,  13,  13,  13,  13,  13,  13,  13,  13,
+        10,  13,  13,  13,  13,   8,  12,  12,  12,  13,  13,  13,  13,  13,  13,  13,
+         6,
+        //abs_level_gtx_flag
+         9,   5,  10,  13,  13,  10,   9,  10,  13,  13,  13,   9,  10,  10,  10,  13,
+         8,   9,  10,  10,  13,   8,   8,   9,  12,  12,  10,   5,   9,   9,   9,  13,
+         1,   5,   9,   9,   9,   6,   5,   9,  10,  10,   9,   9,   9,   9,   9,   9,
+         6,   8,   9,   9,  10,   1,   5,   8,   8,   9,   6,   6,   9,   8,   8,   9,
+         4,   2,   1,   6,   1,   1,   1,   1,
+        //coeff_sign_flag
+         1,   4,   4,   5,   8,   8,
+    }
+};
+
+#define MAX_SUB_BLOCKS 16
+#define MAX_SUB_BLOCK_SIZE 4
+#define MAX_TB_SIZE 64
+
+typedef struct ResidualCoding {
+    //common for ts and non ts
+    TransformBlock *tb;
+
+    int log2_sb_w;
+    int log2_sb_h;
+    int last_sub_block;
+    int hist_value;
+    int update_hist;
+    int num_sb_coeff;
+    int rem_bins_pass1;
+
+    int width_in_sbs;
+    int height_in_sbs;
+    int nb_sbs;
+
+    const uint8_t *sb_scan_x_off;
+    const uint8_t *sb_scan_y_off;
+    const uint8_t *scan_x_off;
+    const uint8_t *scan_y_off;
+
+    uint8_t sb_coded_flag[MAX_SUB_BLOCKS * MAX_SUB_BLOCKS];
+    int sig_coeff_flag[MAX_TB_SIZE * MAX_TB_SIZE];
+    int abs_level_pass1[MAX_TB_SIZE * MAX_TB_SIZE];              ///< AbsLevelPass1[][]
+    int abs_level[MAX_TB_SIZE * MAX_TB_SIZE];
+
+    //for ts only
+    uint8_t infer_sb_cbf;
+    int coeff_sign_level[MAX_TB_SIZE * MAX_TB_SIZE];             ///< CoeffSignLevel[][]
+
+    //for non ts only
+    int qstate;
+    int last_scan_pos;
+    int last_significant_coeff_x;
+    int last_significant_coeff_y;
+} ResidualCoding;
+
+static int cabac_reinit(VVCLocalContext *lc)
+{
+    return skip_bytes(&lc->ep->cc, 0) == NULL ? AVERROR_INVALIDDATA : 0;
+}
+
+static void cabac_init_state(VVCLocalContext *lc)
+{
+    const VVCSPS *sps               = lc->fc->ps.sps;
+    const H266RawSliceHeader *rsh   = lc->sc->sh.r;
+    const int qp                    = av_clip_uintp2(lc->sc->sh.slice_qp_y, 6);
+    int init_type                   = 2 - rsh->sh_slice_type;
+
+    av_assert0(VVC_CONTEXTS == SYNTAX_ELEMENT_LAST);
+
+    ff_vvc_ep_init_stat_coeff(lc->ep, sps->bit_depth, sps->r->sps_persistent_rice_adaptation_enabled_flag);
+
+    if (rsh->sh_cabac_init_flag && !IS_I(rsh))
+        init_type ^= 3;
+
+    for (int i = 0; i < VVC_CONTEXTS; i++) {
+        VVCCabacState *state = &lc->ep->cabac_state[i];
+        const int init_value = init_values[init_type][i];
+        const int shift_idx  = init_values[3][i];
+        const int m = (init_value >> 3) - 4;
+        const int n = ((init_value & 7) * 18) + 1;
+        const int pre = av_clip(((m * (qp - 16)) >> 1) + n, 1, 127);
+
+        state->state[0] = pre << 3;
+        state->state[1] = pre << 7;
+        state->shift[0] = (shift_idx >> 2 ) + 2;
+        state->shift[1] = (shift_idx & 3 ) + 3 + state->shift[0];
+    }
+}
+
+int ff_vvc_cabac_init(VVCLocalContext *lc,
+    const int ctu_idx, const int rx, const int ry)
+{
+    int ret = 0;
+    const VVCPPS *pps               = lc->fc->ps.pps;
+    const int first_ctb_in_slice    = !ctu_idx;
+    const int first_ctb_in_tile     = rx == pps->ctb_to_col_bd[rx] && ry == pps->ctb_to_row_bd[ry];
+
+    if (first_ctb_in_slice|| first_ctb_in_tile) {
+        if (lc->sc->nb_eps == 1 && !first_ctb_in_slice)
+            ret = cabac_reinit(lc);
+        if (ret == 0)
+            cabac_init_state(lc);
+    }
+    return ret;
+}
+
+//fixme
+static void vvc_refill2(CABACContext* c) {
+    int i;
+    unsigned x;
+#if !HAVE_FAST_CLZ
+    x = c->low ^ (c->low - 1);
+    i = 7 - ff_h264_norm_shift[x >> (CABAC_BITS - 1)];
+#else
+    i = ff_ctz(c->low) - CABAC_BITS;
+#endif
+
+    x = -CABAC_MASK;
+
+#if CABAC_BITS == 16
+    x += (c->bytestream[0] << 9) + (c->bytestream[1] << 1);
+#else
+    x += c->bytestream[0] << 1;
+#endif
+
+    c->low += x << i;
+#if !UNCHECKED_BITSTREAM_READER
+    if (c->bytestream < c->bytestream_end)
+#endif
+        c->bytestream += CABAC_BITS / 8;
+}
+
+static int inline vvc_get_cabac(CABACContext *c, VVCCabacState* base, const int ctx)
+{
+    VVCCabacState *s = base + ctx;
+    const int qRangeIdx = c->range >> 5;
+    const int pState = s->state[1] + (s->state[0] << 4);
+    const int valMps = pState >> 14;
+    const int RangeLPS = (qRangeIdx * ((valMps ? 32767 - pState : pState) >> 9 ) >> 1) + 4;
+    int bit, lps_mask;
+
+    c->range -= RangeLPS;
+    lps_mask = ((c->range<<(CABAC_BITS+1)) - c->low)>>31;
+
+    c->low -= (c->range<<(CABAC_BITS+1)) & lps_mask;
+    c->range += (RangeLPS - c->range) & lps_mask;
+
+    bit = valMps ^ (lps_mask & 1);
+
+    lps_mask = ff_h264_norm_shift[c->range];
+    c->range <<= lps_mask;
+    c->low  <<= lps_mask;
+
+    if (!(c->low & CABAC_MASK))
+        vvc_refill2(c);
+    s->state[0] = s->state[0] - (s->state[0] >> s->shift[0]) + (1023 * bit >> s->shift[0]);
+    s->state[1] = s->state[1] - (s->state[1] >> s->shift[1]) + (16383 * bit >> s->shift[1]);
+    return bit;
+}
+
+#define GET_CABAC(ctx) vvc_get_cabac(&lc->ep->cc, lc->ep->cabac_state, ctx)
+
+static av_always_inline int vvc_get_cabac_bypass(CABACContext *c)
+{
+    return get_cabac_bypass(c);
+}
+
+//9.3.3.4 Truncated binary (TB) binarization process
+static int truncated_binary_decode(VVCLocalContext *lc, const int c_max)
+{
+    const int n = c_max + 1;
+    const int k = av_log2(n);
+    const int u = (1 << (k+1)) - n;
+    int v = 0;
+    for (int i = 0; i < k; i++)
+        v = (v << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+    if (v >= u) {
+        v = (v << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+        v -= u;
+    }
+    return v;
+}
+
+// 9.3.3.6 Limited k-th order Exp-Golomb binarization process
+static int limited_kth_order_egk_decode(CABACContext *c, const int k, const int max_pre_ext_len, const int trunc_suffix_len)
+{
+    int pre_ext_len = 0;
+    int escape_length;
+    int val = 0;
+    while ((pre_ext_len < max_pre_ext_len) && vvc_get_cabac_bypass(c))
+        pre_ext_len++;
+    if (pre_ext_len == max_pre_ext_len)
+        escape_length = trunc_suffix_len;
+    else
+        escape_length = pre_ext_len + k;
+    while (escape_length-- > 0) {
+        val = (val << 1) + vvc_get_cabac_bypass(c);
+    }
+    val += ((1 << pre_ext_len) - 1) << k;
+    return val;
+}
+
+static av_always_inline
+void get_left_top(const VVCLocalContext *lc, uint8_t *left, uint8_t *top,
+    const int x0, const int y0, const uint8_t *left_ctx, const uint8_t *top_ctx)
+{
+    const VVCFrameContext *fc   = lc->fc;
+    const VVCSPS *sps           = fc->ps.sps;
+    const int min_cb_width      = fc->ps.pps->min_cb_width;
+    const int x0b = av_mod_uintp2(x0, sps->ctb_log2_size_y);
+    const int y0b = av_mod_uintp2(y0, sps->ctb_log2_size_y);
+    const int x_cb = x0 >> sps->min_cb_log2_size_y;
+    const int y_cb = y0 >> sps->min_cb_log2_size_y;
+
+    if (lc->ctb_left_flag || x0b)
+        *left = SAMPLE_CTB(left_ctx, x_cb - 1, y_cb);
+    if (lc->ctb_up_flag || y0b)
+        *top = SAMPLE_CTB(top_ctx, x_cb, y_cb - 1);
+}
+
+static av_always_inline
+uint8_t get_inc(VVCLocalContext *lc, const uint8_t *ctx)
+{
+    uint8_t left = 0, top = 0;
+    get_left_top(lc, &left, &top, lc->cu->x0, lc->cu->y0, ctx, ctx);
+    return left + top;
+}
+
+int ff_vvc_sao_merge_flag_decode(VVCLocalContext *lc)
+{
+    return GET_CABAC(SAO_MERGE_FLAG);
+}
+
+int ff_vvc_sao_type_idx_decode(VVCLocalContext *lc)
+{
+    if (!GET_CABAC(SAO_TYPE_IDX))
+        return SAO_NOT_APPLIED;
+
+    if (!vvc_get_cabac_bypass(&lc->ep->cc))
+        return SAO_BAND;
+    return SAO_EDGE;
+}
+
+int ff_vvc_sao_band_position_decode(VVCLocalContext *lc)
+{
+    int i;
+    int value = vvc_get_cabac_bypass(&lc->ep->cc);
+
+    for (i = 0; i < 4; i++)
+        value = (value << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+    return value;
+}
+
+int ff_vvc_sao_offset_abs_decode(VVCLocalContext *lc)
+{
+    int i = 0;
+    int length = (1 << (FFMIN(lc->fc->ps.sps->bit_depth, 10) - 5)) - 1;
+
+    while (i < length && vvc_get_cabac_bypass(&lc->ep->cc))
+        i++;
+    return i;
+}
+
+int ff_vvc_sao_offset_sign_decode(VVCLocalContext *lc)
+{
+    return vvc_get_cabac_bypass(&lc->ep->cc);
+}
+
+int ff_vvc_sao_eo_class_decode(VVCLocalContext *lc)
+{
+    int ret = vvc_get_cabac_bypass(&lc->ep->cc) << 1;
+    ret    |= vvc_get_cabac_bypass(&lc->ep->cc);
+    return ret;
+}
+
+int ff_vvc_alf_ctb_flag(VVCLocalContext *lc, const int rx, const int ry, const int c_idx)
+{
+    int inc = c_idx * 3;
+    const VVCFrameContext *fc = lc->fc;
+    if (lc->ctb_left_flag) {
+        const ALFParams *left = &CTB(fc->tab.alf, rx - 1, ry);
+        inc += left->ctb_flag[c_idx];
+    }
+    if (lc->ctb_up_flag) {
+        const ALFParams *above = &CTB(fc->tab.alf, rx, ry - 1);
+        inc += above->ctb_flag[c_idx];
+    }
+    return GET_CABAC(ALF_CTB_FLAG + inc);
+}
+
+int ff_vvc_alf_use_aps_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(ALF_USE_APS_FLAG);
+}
+
+int ff_vvc_alf_luma_prev_filter_idx(VVCLocalContext *lc)
+{
+    return truncated_binary_decode(lc, lc->sc->sh.r->sh_num_alf_aps_ids_luma - 1);
+}
+
+int ff_vvc_alf_luma_fixed_filter_idx(VVCLocalContext *lc)
+{
+    return truncated_binary_decode(lc, 15);
+}
+
+int ff_vvc_alf_ctb_filter_alt_idx(VVCLocalContext *lc, const int c_idx, const int num_chroma_filters)
+{
+    int i = 0;
+    const int length = num_chroma_filters - 1;
+
+    while (i < length && GET_CABAC(ALF_CTB_FILTER_ALT_IDX + c_idx - 1))
+        i++;
+    return i;
+}
+
+int ff_vvc_alf_ctb_cc_idc(VVCLocalContext *lc, const int rx, const int ry, const int idx, const int cc_filters_signalled)
+{
+    int inc = !idx ? ALF_CTB_CC_CB_IDC : ALF_CTB_CC_CR_IDC;
+    int i = 0;
+    const VVCFrameContext *fc = lc->fc;
+    if (lc->ctb_left_flag) {
+        const ALFParams *left = &CTB(fc->tab.alf, rx - 1, ry);
+        inc += left->ctb_cc_idc[idx] != 0;
+    }
+    if (lc->ctb_up_flag) {
+        const ALFParams *above = &CTB(fc->tab.alf, rx, ry - 1);
+        inc += above->ctb_cc_idc[idx] != 0;
+    }
+
+    if (!GET_CABAC(inc))
+        return 0;
+    i++;
+    while (i < cc_filters_signalled && vvc_get_cabac_bypass(&lc->ep->cc))
+        i++;
+    return i;
+}
+
+int ff_vvc_split_cu_flag(VVCLocalContext *lc, const int x0, const int y0,
+    const int cb_width, const int cb_height, const int is_chroma, const VVCAllowedSplit *a)
+{
+    const VVCFrameContext *fc = lc->fc;
+    const VVCPPS *pps   = fc->ps.pps;
+    const int is_inside = (x0 + cb_width <= pps->width) && (y0 + cb_height <= pps->height);
+
+    if ((a->btv || a->bth || a->ttv || a->tth || a->qt) && is_inside)
+    {
+        uint8_t inc = 0, left_height = cb_height, top_width = cb_width;
+
+        get_left_top(lc, &left_height, &top_width, x0, y0, fc->tab.cb_height[is_chroma], fc->tab.cb_width[is_chroma]);
+        inc += left_height < cb_height;
+        inc += top_width   < cb_width;
+        inc += (a->btv + a->bth + a->ttv + a->tth + 2 * a->qt - 1) / 2 * 3;
+
+        return GET_CABAC(SPLIT_CU_FLAG + inc);
+
+    }
+    return !is_inside;
+}
+
+static int split_qt_flag_decode(VVCLocalContext *lc, const int x0, const int y0, const int ch_type, const int cqt_depth)
+{
+    const VVCFrameContext *fc = lc->fc;
+    int inc = 0;
+    uint8_t depth_left = 0, depth_top = 0;
+
+    get_left_top(lc,  &depth_left, &depth_top, x0, y0, fc->tab.cqt_depth[ch_type], fc->tab.cqt_depth[ch_type]);
+    inc += depth_left > cqt_depth;
+    inc += depth_top  > cqt_depth;
+    inc += (cqt_depth >= 2) * 3;
+
+    return GET_CABAC(SPLIT_QT_FLAG + inc);
+}
+
+static int mtt_split_cu_vertical_flag_decode(VVCLocalContext *lc, const int x0, const int y0,
+    const int cb_width, const int cb_height, const int ch_type, const VVCAllowedSplit* a)
+{
+    if ((a->bth || a->tth) && (a->btv || a->ttv)) {
+        int inc;
+        const int v = a->btv + a->ttv;
+        const int h = a->bth + a->tth;
+        if (v > h)
+            inc = 4;
+        else if (v < h)
+            inc = 3;
+        else {
+            const VVCFrameContext *fc   = lc->fc;
+            const VVCSPS *sps           = fc->ps.sps;
+            const int min_cb_width      = fc->ps.pps->min_cb_width;
+            const int x0b               = av_mod_uintp2(x0, sps->ctb_log2_size_y);
+            const int y0b               = av_mod_uintp2(y0, sps->ctb_log2_size_y);
+            const int x_cb              = x0 >> sps->min_cb_log2_size_y;
+            const int y_cb              = y0 >> sps->min_cb_log2_size_y;
+            const int available_a       = lc->ctb_up_flag || y0b;
+            const int available_l       = lc->ctb_left_flag || x0b;
+            const int da                = cb_width  / (available_a ? SAMPLE_CTB(fc->tab.cb_width[ch_type], x_cb, y_cb - 1) : 1);
+            const int dl                = cb_height / (available_l ? SAMPLE_CTB(fc->tab.cb_height[ch_type], x_cb - 1, y_cb) : 1);
+
+            if (da == dl || !available_a || !available_l)
+                inc = 0;
+            else if (da < dl)
+                inc = 1;
+            else
+                inc = 2;
+        }
+        return GET_CABAC(MTT_SPLIT_CU_VERTICAL_FLAG + inc);
+    }
+    return !(a->bth || a->tth);
+}
+
+static int mtt_split_cu_binary_flag_decode(VVCLocalContext *lc, const int mtt_split_cu_vertical_flag, const int mtt_depth)
+{
+    int inc = (2 * mtt_split_cu_vertical_flag) + ((mtt_depth <= 1) ? 1 : 0);
+    return GET_CABAC(MTT_SPLIT_CU_BINARY_FLAG + inc);
+}
+
+VVCSplitMode ff_vvc_split_mode(VVCLocalContext *lc, const int x0, const int y0, const int cb_width, const int cb_height,
+    const int cqt_depth, const int mtt_depth, const int ch_type, const VVCAllowedSplit *a)
+{
+    int allow_no_qt = a->btv || a->bth || a->ttv || a->tth;
+    int split_qt_flag;
+    int mtt_split_cu_vertical_flag;
+    int mtt_split_cu_binary_flag;
+    const VVCSplitMode mtt_split_modes[] = {
+        SPLIT_TT_HOR, SPLIT_BT_HOR, SPLIT_TT_VER, SPLIT_BT_VER,
+    };
+    if (allow_no_qt && a->qt) {
+        split_qt_flag = split_qt_flag_decode(lc, x0, y0, ch_type, cqt_depth);
+    } else {
+        split_qt_flag = !allow_no_qt || a->qt;
+    }
+    if (split_qt_flag)
+        return SPLIT_QT;
+    mtt_split_cu_vertical_flag = mtt_split_cu_vertical_flag_decode(lc, x0, y0, cb_width, cb_height, ch_type, a);
+    if ((a->btv && a->ttv && mtt_split_cu_vertical_flag) ||
+        (a->bth && a->tth && !mtt_split_cu_vertical_flag)) {
+        mtt_split_cu_binary_flag = mtt_split_cu_binary_flag_decode(lc, mtt_split_cu_vertical_flag, mtt_depth);
+    } else {
+        if (!a->btv && !a->bth)
+            mtt_split_cu_binary_flag = 0;
+        else if (!a->ttv && !a->tth)
+            mtt_split_cu_binary_flag = 1;
+        else if (a->bth && a->ttv)
+            mtt_split_cu_binary_flag = 1 - mtt_split_cu_vertical_flag;
+        else
+            mtt_split_cu_binary_flag = mtt_split_cu_vertical_flag;
+    }
+    return mtt_split_modes[(mtt_split_cu_vertical_flag << 1) + mtt_split_cu_binary_flag];
+}
+
+int ff_vvc_non_inter_flag(VVCLocalContext *lc, const int x0, const int y0, const int ch_type)
+{
+    const VVCFrameContext *fc = lc->fc;
+    uint8_t inc, left = 0, top = 0;
+
+    get_left_top(lc, &left, &top, x0, y0, fc->tab.cpm[ch_type], fc->tab.cpm[ch_type]);
+    inc = left || top;
+    return GET_CABAC(NON_INTER_FLAG + inc);
+}
+
+int ff_vvc_pred_mode_flag(VVCLocalContext *lc, const int is_chroma)
+{
+    const VVCFrameContext *fc    = lc->fc;
+    const CodingUnit *cu        = lc->cu;
+    uint8_t inc, left = 0, top = 0;
+
+    get_left_top(lc, &left, &top, cu->x0, cu->y0, fc->tab.cpm[is_chroma], fc->tab.cpm[is_chroma]);
+    inc = left || top;
+    return GET_CABAC(PRED_MODE_FLAG + inc);
+}
+
+int ff_vvc_pred_mode_plt_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(PRED_MODE_PLT_FLAG);
+}
+
+int ff_vvc_intra_bdpcm_luma_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(INTRA_BDPCM_LUMA_FLAG);
+}
+
+int ff_vvc_intra_bdpcm_luma_dir_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(INTRA_BDPCM_LUMA_DIR_FLAG);
+}
+
+int ff_vvc_intra_bdpcm_chroma_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(INTRA_BDPCM_CHROMA_FLAG);
+}
+
+int ff_vvc_intra_bdpcm_chroma_dir_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(INTRA_BDPCM_CHROMA_DIR_FLAG);
+}
+
+int ff_vvc_cu_skip_flag(VVCLocalContext *lc, const uint8_t *cu_skip_flag)
+{
+    const int inc = get_inc(lc, cu_skip_flag);
+    return GET_CABAC(CU_SKIP_FLAG + inc);
+}
+
+int ff_vvc_pred_mode_ibc_flag(VVCLocalContext *lc, const int is_chroma)
+{
+    const VVCFrameContext *fc = lc->fc;
+    const CodingUnit *cu        = lc->cu;
+    uint8_t left_mode = MODE_INTER, top_mode = MODE_INTER;
+    int inc;
+
+    get_left_top(lc, &left_mode, &top_mode, cu->x0, cu->y0, fc->tab.cpm[is_chroma], fc->tab.cpm[is_chroma]);
+    inc = (left_mode == MODE_IBC) + (top_mode == MODE_IBC);
+    return GET_CABAC(PRED_MODE_IBC_FLAG + inc);
+}
+
+int ff_vvc_intra_mip_flag(VVCLocalContext *lc, const uint8_t *intra_mip_flag)
+{
+    const int w     = lc->cu->cb_width;
+    const int h     = lc->cu->cb_height;
+    const int inc   =  (w > h * 2 || h > w * 2) ? 3 : get_inc(lc, intra_mip_flag);
+    return GET_CABAC(INTRA_MIP_FLAG + inc);
+}
+
+int ff_vvc_intra_mip_transposed_flag(VVCLocalContext *lc)
+{
+    return vvc_get_cabac_bypass(&lc->ep->cc);
+}
+
+int ff_vvc_intra_mip_mode(VVCLocalContext *lc)
+{
+    const int w     = lc->cu->cb_width;
+    const int h     = lc->cu->cb_height;
+    const int c_max = (w == 4 && h == 4) ? 15 :
+        ((w == 4 || h == 4) || (w == 8 && h == 8)) ? 7: 5;
+    return truncated_binary_decode(lc, c_max);
+}
+
+int ff_vvc_intra_luma_ref_idx(VVCLocalContext *lc)
+{
+    int i;
+    for (i = 0; i < 2; i++) {
+        if (!GET_CABAC(INTRA_LUMA_REF_IDX + i))
+            return i;
+    }
+    return i;
+}
+
+int ff_vvc_intra_subpartitions_mode_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(INTRA_SUBPARTITIONS_MODE_FLAG);
+}
+
+enum IspType ff_vvc_isp_split_type(VVCLocalContext *lc, const int intra_subpartitions_mode_flag)
+{
+    if (!intra_subpartitions_mode_flag)
+        return ISP_NO_SPLIT;
+    return 1 + GET_CABAC(INTRA_SUBPARTITIONS_SPLIT_FLAG);
+}
+
+int ff_vvc_intra_luma_mpm_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(INTRA_LUMA_MPM_FLAG);
+}
+
+int ff_vvc_intra_luma_not_planar_flag(VVCLocalContext *lc, const int intra_subpartitions_mode_flag)
+{
+    return GET_CABAC(INTRA_LUMA_NOT_PLANAR_FLAG + !intra_subpartitions_mode_flag);
+}
+
+int ff_vvc_intra_luma_mpm_idx(VVCLocalContext *lc)
+{
+    int i;
+    for (i = 0; i < 4 && vvc_get_cabac_bypass(&lc->ep->cc); i++)
+        /* nothing */;
+    return i;
+}
+
+int ff_vvc_intra_luma_mpm_remainder(VVCLocalContext *lc)
+{
+    return truncated_binary_decode(lc, 60);
+}
+
+int ff_vvc_cclm_mode_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(CCLM_MODE_FLAG);
+}
+
+int ff_vvc_cclm_mode_idx(VVCLocalContext *lc)
+{
+    if (!GET_CABAC(CCLM_MODE_IDX))
+        return 0;
+    return vvc_get_cabac_bypass(&lc->ep->cc) + 1;
+}
+
+int ff_vvc_intra_chroma_pred_mode(VVCLocalContext *lc)
+{
+    if (!GET_CABAC(INTRA_CHROMA_PRED_MODE))
+        return 4;
+    return (vvc_get_cabac_bypass(&lc->ep->cc) << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+}
+
+int ff_vvc_general_merge_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(GENERAL_MERGE_FLAG);
+}
+
+static int get_inter_flag_inc(VVCLocalContext *lc, const int x0, const int y0)
+{
+    uint8_t left_merge = 0,  top_merge = 0;
+    uint8_t left_affine = 0, top_affine = 0;
+    const VVCFrameContext *fc = lc->fc;
+
+    get_left_top(lc, &left_merge, &top_merge, x0, y0, fc->tab.msf, fc->tab.msf);
+    get_left_top(lc, &left_affine, &top_affine, x0, y0, fc->tab.iaf, fc->tab.iaf);
+    return (left_merge || left_affine) + (top_merge + top_affine);
+}
+
+int ff_vvc_merge_subblock_flag(VVCLocalContext *lc)
+{
+    const int inc = get_inter_flag_inc(lc, lc->cu->x0, lc->cu->y0);
+    return GET_CABAC(MERGE_SUBBLOCK_FLAG + inc);
+}
+
+int ff_vvc_merge_subblock_idx(VVCLocalContext *lc, const int max_num_subblock_merge_cand)
+{
+    int i;
+    if (!GET_CABAC(MERGE_SUBBLOCK_IDX))
+        return 0;
+    for (i = 1; i < max_num_subblock_merge_cand - 1 && vvc_get_cabac_bypass(&lc->ep->cc); i++)
+        /* nothing */;
+    return i;
+}
+
+int ff_vvc_regular_merge_flag(VVCLocalContext *lc, const int cu_skip_flag)
+{
+    int inc = !cu_skip_flag;
+    return GET_CABAC(REGULAR_MERGE_FLAG + inc);
+}
+
+int ff_vvc_mmvd_merge_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(MMVD_MERGE_FLAG);
+}
+
+int ff_vvc_mmvd_cand_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(MMVD_CAND_FLAG);
+}
+
+static int mmvd_distance_idx_decode(VVCLocalContext *lc)
+{
+    int i;
+    if (!GET_CABAC(MMVD_DISTANCE_IDX))
+        return 0;
+    for (i = 1; i < 7 && vvc_get_cabac_bypass(&lc->ep->cc); i++)
+        /* nothing */;
+    return i;
+}
+
+static int mmvd_direction_idx_decode(VVCLocalContext *lc)
+{
+    return (vvc_get_cabac_bypass(&lc->ep->cc) << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+}
+
+void ff_vvc_mmvd_offset_coding(VVCLocalContext *lc, Mv *mmvd_offset, const int ph_mmvd_fullpel_only_flag)
+{
+    const int shift = ph_mmvd_fullpel_only_flag ? 4 : 2;
+    const int mmvd_distance = 1 << (mmvd_distance_idx_decode(lc) + shift);
+    const int mmvd_direction_idx = mmvd_direction_idx_decode(lc);
+    const int mmvd_signs[][2] = { {1, 0}, {-1, 0}, {0, 1}, {0, -1} };
+    mmvd_offset->x = mmvd_distance * mmvd_signs[mmvd_direction_idx][0];
+    mmvd_offset->y = mmvd_distance * mmvd_signs[mmvd_direction_idx][1];
+}
+
+static PredMode get_luma_pred_mode(VVCLocalContext *lc)
+{
+    const VVCFrameContext *fc  = lc->fc;
+    const CodingUnit *cu = lc->cu;
+    PredMode pred_mode;
+    if (cu->tree_type != DUAL_TREE_CHROMA) {
+        pred_mode = cu->pred_mode;
+    } else {
+        const int x_cb           = cu->x0 >> fc->ps.sps->min_cb_log2_size_y;
+        const int y_cb           = cu->y0 >> fc->ps.sps->min_cb_log2_size_y;
+        const int min_cb_width   = fc->ps.pps->min_cb_width;
+        pred_mode = SAMPLE_CTB(fc->tab.cpm[0], x_cb, y_cb);
+    }
+    return pred_mode;
+}
+
+int ff_vvc_merge_idx(VVCLocalContext *lc)
+{
+    const VVCSPS *sps = lc->fc->ps.sps;
+    const int is_ibc = get_luma_pred_mode(lc) == MODE_IBC;
+    const int c_max = (is_ibc ? sps->max_num_ibc_merge_cand : sps->max_num_merge_cand) - 1;
+    int i;
+
+    if (!GET_CABAC(MERGE_IDX))
+        return 0;
+
+    for (i = 1; i < c_max && vvc_get_cabac_bypass(&lc->ep->cc); i++)
+        /* nothing */;
+    return i;
+}
+
+int ff_vvc_merge_gpm_partition_idx(VVCLocalContext *lc)
+{
+    int i = 0;
+
+    for (int j = 0; j < 6; j++)
+        i = (i << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+
+    return i;
+}
+
+int ff_vvc_merge_gpm_idx(VVCLocalContext *lc, const int idx)
+{
+    const int c_max = lc->fc->ps.sps->max_num_gpm_merge_cand - idx - 1;
+    int i;
+
+    if (!GET_CABAC(MERGE_IDX))
+        return 0;
+
+    for (i = 1; i < c_max && vvc_get_cabac_bypass(&lc->ep->cc); i++)
+        /* nothing */;
+
+    return i;
+}
+
+int ff_vvc_ciip_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(CIIP_FLAG);
+}
+
+PredFlag ff_vvc_pred_flag(VVCLocalContext *lc, const int is_b)
+{
+    const int w = lc->cu->cb_width;
+    const int h = lc->cu->cb_height;
+    if (!is_b)
+        return  PF_L0;
+    if (w + h > 12) {
+        const int log2 = av_log2(w) + av_log2(h);
+        const int inc = 7 - ((1 + log2)>>1);
+        if (GET_CABAC(INTER_PRED_IDC + inc))
+            return PF_BI;
+    }
+    return PF_L0 + GET_CABAC(INTER_PRED_IDC + 5);
+}
+
+int ff_vvc_inter_affine_flag(VVCLocalContext *lc)
+{
+    const int inc = get_inter_flag_inc(lc, lc->cu->x0, lc->cu->y0);
+    return GET_CABAC(INTER_AFFINE_FLAG + inc);
+}
+
+int ff_vvc_cu_affine_type_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(CU_AFFINE_TYPE_FLAG);
+}
+
+int ff_vvc_sym_mvd_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(SYM_MVD_FLAG);
+}
+
+int ff_vvc_ref_idx_lx(VVCLocalContext *lc, const uint8_t nb_refs)
+{
+    const int c_max = nb_refs - 1;
+    const int max_ctx = FFMIN(c_max, 2);
+    int i = 0;
+
+    while (i < max_ctx && GET_CABAC(REF_IDX_LX + i))
+        i++;
+    if (i == 2) {
+        while (i < c_max && vvc_get_cabac_bypass(&lc->ep->cc))
+            i++;
+    }
+    return i;
+}
+
+int ff_vvc_abs_mvd_greater0_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(ABS_MVD_GREATER0_FLAG);
+}
+
+int ff_vvc_abs_mvd_greater1_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(ABS_MVD_GREATER1_FLAG);
+}
+
+int ff_vvc_abs_mvd_minus2(VVCLocalContext *lc)
+{
+    return limited_kth_order_egk_decode(&lc->ep->cc, 1, 15, 17);
+}
+
+int ff_vvc_mvd_sign_flag(VVCLocalContext *lc)
+{
+    return vvc_get_cabac_bypass(&lc->ep->cc);
+}
+
+int ff_vvc_mvp_lx_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(MVP_LX_FLAG);
+}
+
+static int amvr_flag(VVCLocalContext *lc, const int inter_affine_flag)
+{
+    return GET_CABAC(AMVR_FLAG + inter_affine_flag);
+}
+
+static int amvr_precision_idx(VVCLocalContext *lc, const int inc, const int c_max)
+{
+    int i = 0;
+    if (!GET_CABAC(AMVR_PRECISION_IDX + inc))
+        return 0;
+    i++;
+    if (i < c_max && GET_CABAC(AMVR_PRECISION_IDX + 1))
+        i++;
+    return i;
+}
+
+int ff_vvc_amvr_shift(VVCLocalContext *lc, const int inter_affine_flag,
+    const PredMode pred_mode, const int has_amvr_flag)
+{
+    int amvr_shift = 2;
+    if (has_amvr_flag) {
+        if (amvr_flag(lc, inter_affine_flag)) {
+            int idx;
+            if (inter_affine_flag) {
+                idx = amvr_precision_idx(lc, 2, 1);
+                amvr_shift = idx * 4;
+            } else if (pred_mode == MODE_IBC) {
+                idx = amvr_precision_idx(lc, 1, 1);
+                amvr_shift = 4 + idx * 2;
+            } else {
+                static const int shifts[] = {3, 4, 6};
+                idx = amvr_precision_idx(lc, 0, 2);
+                amvr_shift = shifts[idx];
+            }
+        }
+    }
+    return amvr_shift;
+}
+
+int ff_vvc_bcw_idx(VVCLocalContext *lc, const int no_backward_pred_flag)
+{
+    const int c_max = no_backward_pred_flag ? 4 : 2;
+    int i = 1;
+    if (!GET_CABAC(BCW_IDX))
+        return 0;
+    while (i < c_max && vvc_get_cabac_bypass(&lc->ep->cc))
+        i++;
+    return i;
+}
+
+int ff_vvc_tu_cb_coded_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(TU_CB_CODED_FLAG + lc->cu->bdpcm_flag[1]);
+}
+
+int ff_vvc_tu_cr_coded_flag(VVCLocalContext *lc, int tu_cb_coded_flag)
+{
+    return GET_CABAC(TU_CR_CODED_FLAG + (lc->cu->bdpcm_flag[1] ? 2 : tu_cb_coded_flag));
+}
+
+int ff_vvc_tu_y_coded_flag(VVCLocalContext *lc)
+{
+    const CodingUnit *cu = lc->cu;
+    int inc;
+    if (cu->bdpcm_flag[0])
+        inc = 1;
+    else if (cu->isp_split_type == ISP_NO_SPLIT)
+        inc = 0;
+    else
+        inc = 2 + lc->parse.prev_tu_cbf_y;
+    lc->parse.prev_tu_cbf_y = GET_CABAC(TU_Y_CODED_FLAG + inc);
+    return lc->parse.prev_tu_cbf_y;
+}
+
+int ff_vvc_cu_qp_delta_abs(VVCLocalContext *lc)
+{
+    int v, i, k;
+    if (!GET_CABAC(CU_QP_DELTA_ABS))
+        return 0;
+
+    // prefixVal
+    for (v = 1; v < 5 && GET_CABAC(CU_QP_DELTA_ABS + 1); v++)
+        /* nothing */;
+    if (v < 5)
+        return v;
+
+    // 9.3.3.5 k-th order Exp-Golomb binarization process
+    // suffixVal
+
+    // CuQpDeltaVal shall in the range of −( 32 + QpBdOffset / 2 ) to +( 31 + QpBdOffset / 2 )
+    // so k = 6 should enough
+    for (k = 0; k < 6 && vvc_get_cabac_bypass(&lc->ep->cc); k++)
+        /* nothing */;
+    i = (1 << k) - 1;
+    v = 0;
+    while (k--)
+        v = (v << 1) + vvc_get_cabac_bypass(&lc->ep->cc);
+    v += i;
+
+    return v + 5;
+}
+
+int ff_vvc_cu_qp_delta_sign_flag(VVCLocalContext *lc)
+{
+    return vvc_get_cabac_bypass(&lc->ep->cc);
+}
+
+int ff_vvc_cu_chroma_qp_offset_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(CU_CHROMA_QP_OFFSET_FLAG);
+}
+int ff_vvc_cu_chroma_qp_offset_idx(VVCLocalContext *lc)
+{
+    const int c_max = lc->fc->ps.pps->r->pps_chroma_qp_offset_list_len_minus1;
+    int i;
+    for (i = 0; i < c_max && GET_CABAC(CU_CHROMA_QP_OFFSET_IDX); i++)
+        /* nothing */;
+    return i;
+}
+
+static av_always_inline int last_significant_coeff_xy_prefix(VVCLocalContext *lc,
+    const int log2_tb_size, const int log2_zo_tb_size, const int c_idx, const int ctx)
+{
+    int i = 0;
+    int max = (log2_zo_tb_size << 1) - 1;
+    int ctx_offset, ctx_shift;
+    if (!log2_tb_size)
+        return 0;
+    if (!c_idx) {
+        const int offset_y[] = {0, 0, 3, 6, 10, 15};
+        ctx_offset = offset_y[log2_tb_size - 1];
+        ctx_shift  = (log2_tb_size + 1) >> 2;
+    } else {
+        const int shifts[] = {0, 0, 0, 1, 2, 2, 2};
+        ctx_offset = 20;
+        ctx_shift  = shifts[log2_tb_size];
+    }
+    while (i < max && GET_CABAC(ctx + (i >> ctx_shift) + ctx_offset))
+        i++;
+    return i;
+}
+
+static av_always_inline int last_significant_coeff_x_prefix_decode(VVCLocalContext *lc,
+    const int log2_tb_width, const int log2_zo_tb_width, const int c_idx)
+{
+    return last_significant_coeff_xy_prefix(lc, log2_tb_width, log2_zo_tb_width, c_idx, LAST_SIG_COEFF_X_PREFIX);
+}
+
+static av_always_inline int last_significant_coeff_y_prefix_decode(VVCLocalContext *lc,
+    const int log2_tb_height, const int log2_zo_tb_height, const int c_idx)
+{
+    return last_significant_coeff_xy_prefix(lc, log2_tb_height, log2_zo_tb_height, c_idx, LAST_SIG_COEFF_Y_PREFIX);
+}
+
+static av_always_inline int last_sig_coeff_suffix_decode(VVCLocalContext *lc,
+    const int last_significant_coeff_y_prefix)
+{
+    int i;
+    const int length = (last_significant_coeff_y_prefix >> 1) - 1;
+    int value = vvc_get_cabac_bypass(&lc->ep->cc);
+
+    for (i = 1; i < length; i++)
+        value = (value << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+    return value;
+}
+
+int ff_vvc_tu_joint_cbcr_residual_flag(VVCLocalContext *lc, const int tu_cb_coded_flag, const int tu_cr_coded_flag)
+{
+    return GET_CABAC(TU_JOINT_CBCR_RESIDUAL_FLAG + 2 * tu_cb_coded_flag + tu_cr_coded_flag - 1);
+}
+
+int ff_vvc_transform_skip_flag(VVCLocalContext *lc, const int inc)
+{
+    return GET_CABAC(TRANSFORM_SKIP_FLAG + inc);
+}
+
+//9.3.4.2.7 Derivation process for the variables locNumSig, locSumAbsPass1
+static int get_local_sum(const int *level, const int w, const int h,
+    const int xc, const int yc, const int hist_value)
+{
+    int loc_sum = 3 * hist_value;
+    level += w * yc + xc;
+    if (xc < w - 1) {
+        loc_sum += level[1];
+        if (xc < w - 2)
+            loc_sum += level[2] - hist_value;
+        if (yc < h - 1)
+            loc_sum += level[w + 1] - hist_value;
+    }
+    if (yc < h - 1) {
+        loc_sum += level[w];
+        if (yc < h - 2)
+            loc_sum += level[w << 1] - hist_value;
+    }
+    return loc_sum;
+}
+
+//9.3.4.2.7 Derivation process for the variables locNumSig, locSumAbsPass1
+static int get_local_sum_ts(const int *level, const int w, const int h, const int xc, const int yc)
+{
+    int loc_sum = 0;
+    level += w * yc + xc;
+    if (xc > 0)
+        loc_sum += level[-1];
+    if (yc > 0)
+        loc_sum += level[-w];
+    return loc_sum;
+}
+
+static int get_gtx_flag_inc(const ResidualCoding* rc, const int xc, const int yc, const int last)
+{
+    const TransformBlock *tb = rc->tb;
+    int inc;
+    if (last) {
+        const int incs[] = {0, 21, 21};
+        inc =  incs[tb->c_idx];
+    } else {
+        const int d = xc + yc;
+        const int local_sum_sig = get_local_sum(rc->sig_coeff_flag,
+                tb->tb_width,tb->tb_height, xc, yc, rc->hist_value);
+        const int loc_sum_abs_pass1 = get_local_sum(rc->abs_level_pass1,
+                tb->tb_width, tb->tb_height, xc, yc, rc->hist_value);
+        const int offset = FFMIN(loc_sum_abs_pass1 - local_sum_sig, 4);
+
+        if (!tb->c_idx)
+            inc =  1 + offset + (!d ? 15 : (d < 3 ? 10 : (d < 10 ? 5 : 0)));
+        else
+            inc = 22 + offset + (!d ? 5 : 0);
+    }
+    return inc;
+}
+
+static int abs_level_gtx_flag_decode(VVCLocalContext *lc, const int inc)
+{
+    return GET_CABAC(ABS_LEVEL_GTX_FLAG + inc);
+}
+
+static int par_level_flag_decode(VVCLocalContext *lc, const int inc)
+{
+    return GET_CABAC(PAR_LEVEL_FLAG + inc);
+}
+
+static int par_level_flag_ts_decode(VVCLocalContext *lc)
+{
+    const int inc = 32;
+    return GET_CABAC(PAR_LEVEL_FLAG + inc);
+}
+
+static int sb_coded_flag_decode(VVCLocalContext *lc, const uint8_t *sb_coded_flag,
+    const ResidualCoding *rc, const int xs, const int ys)
+{
+    const H266RawSliceHeader *rsh   = lc->sc->sh.r;
+    const TransformBlock *tb        = rc->tb;
+    const int w                     = rc->width_in_sbs;
+    const int h                     = rc->height_in_sbs;
+    int inc;
+
+    if (tb->ts && !rsh->sh_ts_residual_coding_disabled_flag) {
+        const int left = xs > 0 ? sb_coded_flag[-1] : 0;
+        const int above = ys > 0 ? sb_coded_flag[-w] : 0;
+        inc = left + above + 4;
+    } else {
+        const int right  = (xs < w - 1) ? sb_coded_flag[1] : 0;
+        const int bottom = (ys < h - 1) ? sb_coded_flag[w] : 0;
+        inc = (right | bottom) + (tb->c_idx ? 2 : 0);
+    }
+    return GET_CABAC(SB_CODED_FLAG + inc);
+}
+
+static int sig_coeff_flag_decode(VVCLocalContext *lc, const ResidualCoding* rc, const int xc, const int yc)
+{
+    const H266RawSliceHeader *rsh   = lc->sc->sh.r;
+    const TransformBlock *tb        = rc->tb;
+    int inc;
+
+    if (tb->ts && !rsh->sh_ts_residual_coding_disabled_flag) {
+        const int local_num_sig = get_local_sum_ts(rc->sig_coeff_flag, tb->tb_width, tb->tb_height, xc, yc);
+        inc = 60 + local_num_sig;
+    } else {
+        const int d = xc + yc;
+        const int loc_sum_abs_pass1 = get_local_sum(rc->abs_level_pass1,
+                tb->tb_width, tb->tb_height, xc, yc, 0);
+
+        if (!tb->c_idx) {
+            inc = 12 * FFMAX(0, rc->qstate - 1) + FFMIN((loc_sum_abs_pass1 + 1) >> 1, 3) + ((d < 2) ? 8 : (d < 5 ? 4 : 0));
+        } else {
+            inc = 36 + 8 * FFMAX(0, rc->qstate - 1) + FFMIN((loc_sum_abs_pass1 + 1) >> 1, 3) + (d < 2 ? 4 : 0);
+        }
+    }
+    return GET_CABAC(SIG_COEFF_FLAG + inc);
+}
+
+static int abs_get_rice_param(VVCLocalContext *lc, const ResidualCoding* rc,
+                              const int xc, const int yc, const int base_level)
+{
+    const VVCSPS *sps = lc->fc->ps.sps;
+    const TransformBlock* tb = rc->tb;
+    const int rice_params[] = {
+        0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 2,
+        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3,
+    };
+    int loc_sum_abs;
+    int shift_val;
+
+    loc_sum_abs = get_local_sum(rc->abs_level, tb->tb_width, tb->tb_height, xc,
+            yc, rc->hist_value);
+
+    if (!sps->r->sps_rrc_rice_extension_flag) {
+        shift_val = 0;
+    } else {
+        shift_val = (av_log2(FFMAX(FFMIN(loc_sum_abs, 2048), 8)) - 3) & ~1;
+    }
+
+    loc_sum_abs = av_clip_uintp2((loc_sum_abs >> shift_val) - base_level * 5, 5);
+
+    return rice_params[loc_sum_abs] + shift_val;
+}
+
+static int abs_decode(VVCLocalContext *lc, const int c_rice_param)
+{
+    const VVCSPS *sps = lc->fc->ps.sps;
+    const int MAX_BIN = 6;
+    int prefix = 0;
+    int suffix = 0;
+    int i;
+
+    while (prefix < MAX_BIN && vvc_get_cabac_bypass(&lc->ep->cc))
+        prefix++;
+    if (prefix < MAX_BIN) {
+        for (i = 0; i < c_rice_param; i++) {
+            suffix = (suffix << 1) | vvc_get_cabac_bypass(&lc->ep->cc);
+        }
+    } else {
+        suffix = limited_kth_order_egk_decode(&lc->ep->cc,
+                                              c_rice_param + 1,
+                                              26 - sps->log2_transform_range,
+                                              sps->log2_transform_range);
+    }
+    return suffix + (prefix << c_rice_param);
+}
+
+static int abs_remainder_decode(VVCLocalContext *lc, const ResidualCoding* rc, const int xc, const int yc)
+{
+    const VVCSPS *sps            = lc->fc->ps.sps;
+    const H266RawSliceHeader *rsh = lc->sc->sh.r;
+    const int base_level[][2][2] = {
+        { {4, 4}, {4, 4} },
+        { {3, 2}, {2, 1} }
+    };
+    const int c_rice_param = abs_get_rice_param(lc, rc, xc, yc,
+        base_level[sps->r->sps_rrc_rice_extension_flag][sps->bit_depth > 12][IS_I(rsh)]);
+    const int rem = abs_decode(lc, c_rice_param);
+    return rem;
+}
+
+static int abs_remainder_ts_decode(VVCLocalContext *lc, const ResidualCoding* rc, const int xc, const int yc)
+{
+    const H266RawSliceHeader *rsh = lc->sc->sh.r;
+    const int c_rice_param = rsh->sh_ts_residual_coding_rice_idx_minus1 + 1;
+    const int rem = abs_decode(lc, c_rice_param);
+
+    return rem;
+}
+
+static int coeff_sign_flag_decode(VVCLocalContext *lc)
+{
+    return vvc_get_cabac_bypass(&lc->ep->cc);
+}
+
+//9.3.4.2.10 Derivation process of ctxInc for the syntax element coeff_sign_flag for transform skip mode
+static int coeff_sign_flag_ts_decode(VVCLocalContext *lc, const CodingUnit *cu, const ResidualCoding *rc, const int xc, const int yc)
+{
+    const TransformBlock *tb    = rc->tb;
+    const int w                 = tb->tb_width;
+    const int *level            = rc->coeff_sign_level + yc * w + xc;
+    const int left_sign         = (xc == 0) ? 0 : level[-1];
+    const int above_sign        = (yc == 0) ? 0 : level[-w];
+    const int bdpcm_flag        = cu->bdpcm_flag[tb->c_idx];
+    int inc;
+
+    if (left_sign == -above_sign)
+        inc = bdpcm_flag == 0 ? 0 : 3;
+    else if (left_sign >= 0 && above_sign >= 0)
+        inc = bdpcm_flag == 0 ? 1 : 4;
+    else
+        inc = bdpcm_flag == 0 ? 2 : 5;
+    return GET_CABAC(COEFF_SIGN_FLAG + inc);
+}
+
+static int abs_level_gt1_flag_ts_decode(VVCLocalContext *lc, const CodingUnit *cu, const ResidualCoding *rc, const int xc, const int yc)
+{
+    const TransformBlock *tb = rc->tb;
+    const int *sig_coeff_flag = rc->sig_coeff_flag + yc * tb->tb_width + xc;
+    int inc;
+
+    if (cu->bdpcm_flag[tb->c_idx]) {
+        inc = 67;
+    } else {
+        const int l = xc > 0 ? sig_coeff_flag[-1] : 0;
+        const int a = yc > 0 ? sig_coeff_flag[-tb->tb_width] : 0;
+        inc = 64 + a + l;
+    }
+    return GET_CABAC(ABS_LEVEL_GTX_FLAG + inc);
+}
+
+static int abs_level_gtx_flag_ts_decode(VVCLocalContext *lc, const int j)
+{
+    const int inc = 67 + j;
+    return GET_CABAC(ABS_LEVEL_GTX_FLAG + inc);
+}
+
+static const uint8_t qstate_translate_table[][2] = {
+    { 0, 2 }, { 2, 0 }, { 1, 3 }, { 3, 1 }
+};
+
+static int dec_abs_level_decode(VVCLocalContext *lc, const ResidualCoding *rc,
+    const int xc, const int yc, int *abs_level)
+{
+    const int c_rice_param  = abs_get_rice_param(lc, rc, xc, yc, 0);
+    const int dec_abs_level =  abs_decode(lc, c_rice_param);
+    const int zero_pos      = (rc->qstate < 2 ? 1 : 2) << c_rice_param;
+
+    *abs_level = 0;
+    if (dec_abs_level != zero_pos) {
+        *abs_level = dec_abs_level;
+        if (dec_abs_level < zero_pos)
+            *abs_level += 1;
+    }
+    return dec_abs_level;
+}
+
+static void ep_update_hist(EntryPoint *ep, ResidualCoding *rc,
+    const int remainder, const int addin)
+{
+    int *stat = ep->stat_coeff + rc->tb->c_idx;
+    if (rc->update_hist && remainder > 0) {
+        *stat = (*stat + av_log2(remainder) + addin) >> 1;
+        rc->update_hist = 0;
+    }
+}
+
+static void init_residual_coding(VVCLocalContext *lc, ResidualCoding *rc,
+        const int log2_zo_tb_width, const int log2_zo_tb_height,
+        TransformBlock *tb)
+{
+    const VVCSPS *sps   = lc->fc->ps.sps;
+    int log2_sb_w = (FFMIN(log2_zo_tb_width, log2_zo_tb_height ) < 2 ? 1 : 2 );
+    int log2_sb_h = log2_sb_w;
+
+    if ( log2_zo_tb_width + log2_zo_tb_height > 3 ) {
+        if ( log2_zo_tb_width < 2 ) {
+            log2_sb_w = log2_zo_tb_width;
+            log2_sb_h = 4 - log2_sb_w;
+        } else if ( log2_zo_tb_height < 2 ) {
+            log2_sb_h = log2_zo_tb_height;
+            log2_sb_w = 4 - log2_sb_h;
+        }
+    }
+    rc->log2_sb_w = log2_sb_w;
+    rc->log2_sb_h = log2_sb_h;
+    rc->num_sb_coeff   = 1 << (log2_sb_w + log2_sb_h);
+    rc->last_sub_block = ( 1 << ( log2_zo_tb_width + log2_zo_tb_height - (log2_sb_w + log2_sb_h))) - 1;
+    rc->hist_value     = sps->r->sps_persistent_rice_adaptation_enabled_flag ? (1 << lc->ep->stat_coeff[tb->c_idx]) : 0;
+    rc->update_hist    = sps->r->sps_persistent_rice_adaptation_enabled_flag ? 1 : 0;
+    rc->rem_bins_pass1 = (( 1 << ( log2_zo_tb_width + log2_zo_tb_height)) * 7 ) >> 2;
+
+
+    rc->sb_scan_x_off = ff_vvc_diag_scan_x[log2_zo_tb_width - log2_sb_w][log2_zo_tb_height - log2_sb_h];
+    rc->sb_scan_y_off = ff_vvc_diag_scan_y[log2_zo_tb_width - log2_sb_w][log2_zo_tb_height - log2_sb_h];
+
+    rc->scan_x_off = ff_vvc_diag_scan_x[log2_sb_w][log2_sb_h];
+    rc->scan_y_off = ff_vvc_diag_scan_y[log2_sb_w][log2_sb_h];
+
+    rc->infer_sb_cbf = 1;
+
+    rc->width_in_sbs  = (1 << (log2_zo_tb_width - log2_sb_w));
+    rc->height_in_sbs = (1 << (log2_zo_tb_height - log2_sb_h));
+    rc->nb_sbs        = rc->width_in_sbs * rc->height_in_sbs;
+
+    rc->last_scan_pos = rc->num_sb_coeff;
+    rc->qstate        = 0;
+
+    rc->tb = tb;
+}
+
+static int residual_ts_coding_subblock(VVCLocalContext *lc, ResidualCoding* rc, const int i)
+{
+    const CodingUnit *cu    = lc->cu;
+    TransformBlock *tb      = rc->tb;
+    const int bdpcm_flag    = cu->bdpcm_flag[tb->c_idx];
+    const int xs            = rc->sb_scan_x_off[i];
+    const int ys            = rc->sb_scan_y_off[i];
+    uint8_t *sb_coded_flag  = rc->sb_coded_flag + ys * rc->width_in_sbs + xs;
+    int infer_sb_sig_coeff_flag = 1;
+    int last_scan_pos_pass1 = -1, last_scan_pos_pass2 = -1, n;
+    int abs_level_gtx_flag[MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE];
+    int abs_level_pass2[MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE];       ///< AbsLevelPass2
+
+    if (i != rc->last_sub_block || !rc->infer_sb_cbf)
+        *sb_coded_flag = sb_coded_flag_decode(lc, sb_coded_flag, rc, xs, ys);
+    else
+        *sb_coded_flag = 1;
+    if (*sb_coded_flag && i < rc->last_sub_block)
+        rc->infer_sb_cbf = 0;
+
+    //first scan pass
+    for (n = 0; n < rc->num_sb_coeff && rc->rem_bins_pass1 >= 4; n++) {
+        const int xc  = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
+        const int yc  = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
+        const int off = yc * tb->tb_width + xc;
+        int *sig_coeff_flag   = rc->sig_coeff_flag + off;
+        int *abs_level_pass1  = rc->abs_level_pass1 + off;
+        int *coeff_sign_level = rc->coeff_sign_level + off;
+        int par_level_flag    = 0;
+
+        abs_level_gtx_flag[n] = 0;
+        last_scan_pos_pass1 = n;
+        if (*sb_coded_flag && (n != rc->num_sb_coeff - 1 || !infer_sb_sig_coeff_flag)) {
+            *sig_coeff_flag = sig_coeff_flag_decode(lc, rc, xc, yc);
+            rc->rem_bins_pass1--;
+            if (*sig_coeff_flag)
+                infer_sb_sig_coeff_flag = 0;
+        } else {
+            *sig_coeff_flag = (n == rc->num_sb_coeff - 1) && infer_sb_sig_coeff_flag && *sb_coded_flag;
+        }
+        *coeff_sign_level = 0;
+        if (*sig_coeff_flag) {
+            *coeff_sign_level = 1 - 2 * coeff_sign_flag_ts_decode(lc, cu, rc, xc, yc);
+            abs_level_gtx_flag[n] = abs_level_gt1_flag_ts_decode(lc, cu, rc, xc, yc);
+            rc->rem_bins_pass1 -= 2;
+            if (abs_level_gtx_flag[n]) {
+                par_level_flag = par_level_flag_ts_decode(lc);
+                rc->rem_bins_pass1--;
+            }
+        }
+        *abs_level_pass1 = *sig_coeff_flag + par_level_flag + abs_level_gtx_flag[n];
+    }
+
+    //greater than x scan pass
+    for (n = 0; n < rc->num_sb_coeff && rc->rem_bins_pass1 >= 4; n++) {
+        const int xc  = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
+        const int yc  = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
+        const int off = yc * tb->tb_width + xc;
+
+        abs_level_pass2[n] = rc->abs_level_pass1[off];
+        for (int j = 1; j < 5 && abs_level_gtx_flag[n]; j++) {
+            abs_level_gtx_flag[n] = abs_level_gtx_flag_ts_decode(lc, j);
+            abs_level_pass2[n] += abs_level_gtx_flag[n] << 1;
+            rc->rem_bins_pass1--;
+        }
+        last_scan_pos_pass2 = n;
+    }
+
+    /* remainder scan pass */
+    for (n = 0; n < rc->num_sb_coeff; n++) {
+        const int xc  = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
+        const int yc  = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
+        const int off = yc * tb->tb_width + xc;
+        const int *abs_level_pass1  = rc->abs_level_pass1 + off;
+        int *abs_level              = rc->abs_level + off;
+        int *coeff_sign_level       = rc->coeff_sign_level + off;
+        int abs_remainder = 0;
+
+        if ((n <= last_scan_pos_pass2 && abs_level_pass2[n] >= 10) ||
+            (n > last_scan_pos_pass2 && n <= last_scan_pos_pass1 &&
+            *abs_level_pass1 >= 2) ||
+            (n > last_scan_pos_pass1 &&  *sb_coded_flag))
+            abs_remainder = abs_remainder_ts_decode(lc, rc, xc, yc);
+        if (n <= last_scan_pos_pass2) {
+            *abs_level = abs_level_pass2[n] + 2 * abs_remainder;
+        } else if (n <= last_scan_pos_pass1) {
+            *abs_level = *abs_level_pass1 + 2 * abs_remainder;
+        } else {
+            *abs_level = abs_remainder;
+            if (abs_remainder) {
+                //n > lastScanPosPass1
+                *coeff_sign_level = 1 - 2 * coeff_sign_flag_decode(lc);
+            }
+        }
+        if (!bdpcm_flag && n <= last_scan_pos_pass1) {
+            const int left  = xc > 0 ? abs_level[-1] : 0;
+            const int above = yc > 0 ? abs_level[-tb->tb_width] : 0;
+            const int pred = FFMAX(left, above);
+
+            if (*abs_level == 1 && pred > 0)
+                *abs_level = pred;
+            else if (*abs_level > 0 && *abs_level <= pred)
+                (*abs_level)--;
+        }
+        if (*abs_level) {
+            tb->coeffs[off] = *coeff_sign_level * *abs_level;
+            tb->max_scan_x = FFMAX(xc, tb->max_scan_x);
+            tb->max_scan_y = FFMAX(yc, tb->max_scan_y);
+            tb->min_scan_x = FFMIN(xc, tb->min_scan_x);
+            tb->min_scan_y = FFMIN(yc, tb->min_scan_y);
+        } else {
+            tb->coeffs[off] = 0;
+        }
+    }
+
+    return 0;
+}
+
+static int hls_residual_ts_coding(VVCLocalContext *lc, TransformBlock *tb)
+{
+    ResidualCoding rc;
+    tb->min_scan_x = tb->min_scan_y = INT_MAX;
+    init_residual_coding(lc, &rc, tb->log2_tb_width, tb->log2_tb_height, tb);
+    for (int i = 0; i <= rc.last_sub_block; i++) {
+        int ret = residual_ts_coding_subblock(lc, &rc, i);
+        if (ret < 0)
+            return ret;
+    }
+
+    return 0;
+}
+
+static inline int residual_coding_subblock(VVCLocalContext *lc, ResidualCoding *rc, const int i)
+{
+    const H266RawSliceHeader *rsh   = lc->sc->sh.r;
+    TransformBlock *tb              = rc->tb;
+    int first_sig_scan_pos_sb, last_sig_scan_pos_sb;
+    int first_pos_mode0, first_pos_mode1;
+    int infer_sb_dc_sig_coeff_flag = 0;
+    int n, sig_hidden_flag, sum = 0;
+    int abs_level_gt2_flag[MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE];
+    const int start_qstate_sb = rc->qstate;
+    const int xs = rc->sb_scan_x_off[i];
+    const int ys = rc->sb_scan_y_off[i];
+    uint8_t *sb_coded_flag = rc->sb_coded_flag + ys * rc->width_in_sbs + xs;
+
+
+    av_assert0(rc->num_sb_coeff <= MAX_SUB_BLOCK_SIZE * MAX_SUB_BLOCK_SIZE);
+    if (i < rc->last_sub_block && i > 0) {
+        *sb_coded_flag = sb_coded_flag_decode(lc, sb_coded_flag, rc, xs, ys);
+        infer_sb_dc_sig_coeff_flag = 1;
+    } else {
+        *sb_coded_flag = 1;
+    }
+    if (*sb_coded_flag && (xs > 3 || ys > 3) && tb->c_idx == 0)
+        lc->parse.mts_zero_out_sig_coeff_flag = 0;
+
+    if (!*sb_coded_flag)
+        return 0;
+
+    first_sig_scan_pos_sb = rc->num_sb_coeff;
+    last_sig_scan_pos_sb = -1;
+    first_pos_mode0 = (i == rc->last_sub_block ? rc->last_scan_pos : rc->num_sb_coeff -1);
+    first_pos_mode1 = first_pos_mode0;
+    for (n = first_pos_mode0; n >= 0 && rc->rem_bins_pass1 >= 4; n--) {
+        const int xc   = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
+        const int yc   = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
+        const int last = (xc == rc->last_significant_coeff_x && yc == rc->last_significant_coeff_y);
+        int *abs_level_pass1 = rc->abs_level_pass1 + yc * tb->tb_width + xc;
+        int *sig_coeff_flag  = rc->sig_coeff_flag + yc * tb->tb_width + xc;
+
+        if ((n > 0 || !infer_sb_dc_sig_coeff_flag ) && !last) {
+            *sig_coeff_flag = sig_coeff_flag_decode(lc, rc, xc, yc);
+            rc->rem_bins_pass1--;
+            if (*sig_coeff_flag)
+                infer_sb_dc_sig_coeff_flag = 0;
+        } else {
+            *sig_coeff_flag = last || (!rc->scan_x_off[n] && !rc ->scan_y_off[n] &&
+                infer_sb_dc_sig_coeff_flag);
+        }
+        *abs_level_pass1 = 0;
+        if (*sig_coeff_flag) {
+            int abs_level_gt1_flag, par_level_flag = 0;
+            const int inc = get_gtx_flag_inc(rc, xc, yc, last);
+            abs_level_gt1_flag = abs_level_gtx_flag_decode(lc, inc);
+            rc->rem_bins_pass1--;
+            if (abs_level_gt1_flag) {
+                par_level_flag = par_level_flag_decode(lc, inc);
+                abs_level_gt2_flag[n] = abs_level_gtx_flag_decode(lc, inc + 32);
+                rc->rem_bins_pass1 -= 2;
+            } else {
+                abs_level_gt2_flag[n] = 0;
+            }
+            if (last_sig_scan_pos_sb == -1)
+                last_sig_scan_pos_sb = n;
+            first_sig_scan_pos_sb = n;
+
+            *abs_level_pass1 =
+                1  + par_level_flag + abs_level_gt1_flag + (abs_level_gt2_flag[n] << 1);
+        } else {
+            abs_level_gt2_flag[n] = 0;
+        }
+
+        if (rsh->sh_dep_quant_used_flag)
+            rc->qstate = qstate_translate_table[rc->qstate][*abs_level_pass1 & 1];
+
+        first_pos_mode1 = n - 1;
+    }
+    for (n = first_pos_mode0; n > first_pos_mode1; n--) {
+        const int xc = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
+        const int yc = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
+        const int *abs_level_pass1  = rc->abs_level_pass1 + yc * tb->tb_width + xc;
+        int *abs_level              = rc->abs_level + yc * tb->tb_width + xc;
+
+        *abs_level = *abs_level_pass1;
+        if (abs_level_gt2_flag[n]) {
+            const int abs_remainder = abs_remainder_decode(lc, rc, xc, yc);
+            ep_update_hist(lc->ep, rc, abs_remainder, 2);
+            *abs_level += 2 * abs_remainder;
+        }
+    }
+    for (n = first_pos_mode1; n >= 0; n--) {
+        const int xc    = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
+        const int yc    = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
+        int *abs_level  = rc->abs_level + yc * tb->tb_width + xc;
+
+        if (*sb_coded_flag) {
+            const int dec_abs_level = dec_abs_level_decode(lc, rc, xc, yc, abs_level);
+            ep_update_hist(lc->ep, rc, dec_abs_level, 0);
+        }
+        if (*abs_level > 0) {
+            if (last_sig_scan_pos_sb == -1)
+                last_sig_scan_pos_sb = n;
+            first_sig_scan_pos_sb = n;
+        }
+        if (rsh->sh_dep_quant_used_flag)
+            rc->qstate = qstate_translate_table[rc->qstate][*abs_level & 1];
+    }
+    sig_hidden_flag = rsh->sh_sign_data_hiding_used_flag &&
+        (last_sig_scan_pos_sb - first_sig_scan_pos_sb > 3 ? 1 : 0);
+
+    if (rsh->sh_dep_quant_used_flag)
+        rc->qstate = start_qstate_sb;
+    n = (i == rc->last_sub_block ? rc->last_scan_pos : rc->num_sb_coeff -1);
+    for (/* nothing */; n >= 0; n--) {
+        int trans_coeff_level;
+        const int xc  = (xs << rc->log2_sb_w) + rc->scan_x_off[n];
+        const int yc  = (ys << rc->log2_sb_h) + rc->scan_y_off[n];
+        const int off = yc * tb->tb_width + xc;
+        const int *abs_level = rc->abs_level + off;
+
+        if (*abs_level > 0) {
+            int sign = 1;
+            if (!sig_hidden_flag || (n != first_sig_scan_pos_sb))
+                sign = 1 - 2 * coeff_sign_flag_decode(lc);
+            if (rsh->sh_dep_quant_used_flag) {
+                trans_coeff_level = (2 * *abs_level - (rc->qstate > 1)) * sign;
+            } else {
+                trans_coeff_level = *abs_level * sign;
+                if (sig_hidden_flag) {
+                    sum += *abs_level;
+                    if (n == first_sig_scan_pos_sb && (sum % 2))
+                        trans_coeff_level = -trans_coeff_level;
+                }
+            }
+            tb->coeffs[off] = trans_coeff_level;
+            tb->max_scan_x = FFMAX(xc, tb->max_scan_x);
+            tb->max_scan_y = FFMAX(yc, tb->max_scan_y);
+        }
+        if (rsh->sh_dep_quant_used_flag)
+            rc->qstate = qstate_translate_table[rc->qstate][*abs_level & 1];
+    }
+
+    return 0;
+}
+
+static void derive_last_scan_pos(ResidualCoding *rc,
+    const int log2_zo_tb_width, int log2_zo_tb_height)
+{
+    int xc, yc, xs, ys;
+    do {
+        if (rc->last_scan_pos == 0) {
+            rc->last_scan_pos = rc->num_sb_coeff;
+            rc->last_sub_block--;
+        }
+        rc->last_scan_pos--;
+        xs = rc->sb_scan_x_off[rc->last_sub_block];
+        ys = rc->sb_scan_y_off[rc->last_sub_block];
+        xc = (xs << rc->log2_sb_w) + rc->scan_x_off[rc->last_scan_pos];
+        yc = (ys << rc->log2_sb_h) + rc->scan_y_off[rc->last_scan_pos];
+    } while ((xc != rc->last_significant_coeff_x) || (yc != rc->last_significant_coeff_y));
+}
+
+static void last_significant_coeff_x_y_decode(ResidualCoding *rc, VVCLocalContext *lc,
+    const int log2_zo_tb_width, const int log2_zo_tb_height)
+{
+    const H266RawSliceHeader *rsh   = lc->sc->sh.r;
+    const TransformBlock *tb        = rc->tb;
+    int last_significant_coeff_x, last_significant_coeff_y;
+
+    last_significant_coeff_x = last_significant_coeff_x_prefix_decode(lc,
+            tb->log2_tb_width, log2_zo_tb_width, tb->c_idx);
+
+    last_significant_coeff_y = last_significant_coeff_y_prefix_decode(lc,
+        tb->log2_tb_height, log2_zo_tb_height, tb->c_idx);
+
+    if (last_significant_coeff_x > 3) {
+        int suffix = last_sig_coeff_suffix_decode(lc, last_significant_coeff_x);
+        last_significant_coeff_x = (1 << ((last_significant_coeff_x >> 1) - 1)) *
+            (2 + (last_significant_coeff_x & 1)) + suffix;
+    }
+    if (last_significant_coeff_y > 3) {
+        int suffix = last_sig_coeff_suffix_decode(lc, last_significant_coeff_y);
+        last_significant_coeff_y = (1 << ((last_significant_coeff_y >> 1) - 1)) *
+            (2 + (last_significant_coeff_y & 1)) + suffix;
+    }
+    if (rsh->sh_reverse_last_sig_coeff_flag) {
+        last_significant_coeff_x = (1 << log2_zo_tb_width) - 1 - last_significant_coeff_x;
+        last_significant_coeff_y = (1 << log2_zo_tb_height) - 1 - last_significant_coeff_y;
+    }
+    rc->last_significant_coeff_x = last_significant_coeff_x;
+    rc->last_significant_coeff_y = last_significant_coeff_y;
+}
+
+static int hls_residual_coding(VVCLocalContext *lc, TransformBlock *tb)
+{
+    const VVCSPS *sps           = lc->fc->ps.sps;
+    const CodingUnit *cu        = lc->cu;
+    const int log2_tb_width     = tb->log2_tb_width;
+    const int log2_tb_height    = tb->log2_tb_height;
+    const int c_idx             = tb->c_idx;
+    int log2_zo_tb_width, log2_zo_tb_height;
+    ResidualCoding rc;
+
+    if (sps->r->sps_mts_enabled_flag && cu->sbt_flag && c_idx == 0 && log2_tb_width == 5 && log2_tb_height < 6)
+        log2_zo_tb_width = 4;
+    else
+        log2_zo_tb_width = FFMIN(log2_tb_width, 5 );
+
+    if (sps->r->sps_mts_enabled_flag && cu->sbt_flag && c_idx == 0 && log2_tb_width < 6 && log2_tb_height == 5 )
+        log2_zo_tb_height = 4;
+    else
+        log2_zo_tb_height = FFMIN(log2_tb_height, 5);
+
+    init_residual_coding(lc, &rc, log2_zo_tb_width, log2_zo_tb_height, tb);
+    last_significant_coeff_x_y_decode(&rc, lc, log2_zo_tb_width, log2_zo_tb_height);
+    derive_last_scan_pos(&rc, log2_zo_tb_width, log2_zo_tb_height);
+
+    if (rc.last_sub_block == 0 && log2_tb_width >= 2 && log2_tb_height >= 2 && !tb->ts && rc.last_scan_pos > 0)
+        lc->parse.lfnst_dc_only = 0;
+    if ((rc.last_sub_block > 0 && log2_tb_width >= 2 && log2_tb_height >= 2 ) ||
+         (rc.last_scan_pos > 7 && (log2_tb_width == 2 || log2_tb_width == 3 ) &&
+         log2_tb_width == log2_tb_height))
+        lc->parse.lfnst_zero_out_sig_coeff_flag = 0;
+    if ((rc.last_sub_block > 0 || rc.last_scan_pos > 0 ) && c_idx == 0)
+        lc->parse.mts_dc_only = 0;
+
+    memset(tb->coeffs, 0, tb->tb_width * tb->tb_height * sizeof(*tb->coeffs));
+    memset(rc.abs_level, 0, tb->tb_width * tb->tb_height * sizeof(rc.abs_level[0]));
+    memset(rc.sb_coded_flag, 0, rc.nb_sbs);
+    memset(rc.abs_level_pass1, 0, tb->tb_width * tb->tb_height * sizeof(rc.abs_level_pass1[0]));
+    memset(rc.sig_coeff_flag, 0, tb->tb_width * tb->tb_height * sizeof(rc.sig_coeff_flag[0]));
+
+    for (int i = rc.last_sub_block; i >= 0; i--) {
+        int ret = residual_coding_subblock(lc, &rc, i);
+        if (ret < 0)
+            return ret;
+    }
+
+    return 0;
+}
+
+int ff_vvc_residual_coding(VVCLocalContext *lc, TransformBlock *tb)
+{
+    const H266RawSliceHeader *rsh   = lc->sc->sh.r;
+    const int ts                    = !rsh->sh_ts_residual_coding_disabled_flag && tb->ts;
+
+    return ts ? hls_residual_ts_coding(lc, tb) : hls_residual_coding(lc, tb);
+}
+
+int ff_vvc_cu_coded_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(CU_CODED_FLAG);
+}
+
+int ff_vvc_sbt_flag(VVCLocalContext *lc)
+{
+    const int w     = lc->cu->cb_width;
+    const int h     = lc->cu->cb_height;
+    const int inc   = w * h <= 256;
+    return GET_CABAC(CU_SBT_FLAG + inc);
+}
+
+int ff_vvc_sbt_quad_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(CU_SBT_QUAD_FLAG);
+}
+
+int ff_vvc_sbt_horizontal_flag(VVCLocalContext *lc)
+{
+    const int w = lc->cu->cb_width;
+    const int h = lc->cu->cb_height;
+    const int inc = (w == h) ? 0 : ((w < h) ? 1 : 2);
+    return GET_CABAC(CU_SBT_HORIZONTAL_FLAG + inc);
+}
+
+int ff_vvc_sbt_pos_flag(VVCLocalContext *lc)
+{
+    return GET_CABAC(CU_SBT_POS_FLAG);
+}
+
+int ff_vvc_lfnst_idx(VVCLocalContext *lc, const int inc)
+{
+    if (!GET_CABAC(LFNST_IDX + inc))
+        return 0;
+    if (!GET_CABAC(LFNST_IDX + 2))
+        return 1;
+    return 2;
+}
+
+int ff_vvc_mts_idx(VVCLocalContext *lc)
+{
+    int i;
+    for (i = 0; i < 4; i++) {
+        if (!GET_CABAC(MTS_IDX + i))
+            return i;
+    }
+    return i;
+}
+
+int ff_vvc_end_of_slice_flag_decode(VVCLocalContext *lc)
+{
+    return get_cabac_terminate(&lc->ep->cc);
+}
+
+int ff_vvc_end_of_tile_one_bit(VVCLocalContext *lc)
+{
+    return get_cabac_terminate(&lc->ep->cc);
+}
+
+int ff_vvc_end_of_subset_one_bit(VVCLocalContext *lc)
+{
+    return get_cabac_terminate(&lc->ep->cc);
+}
diff --git a/libavcodec/vvc/vvc_cabac.h b/libavcodec/vvc/vvc_cabac.h
new file mode 100644
index 0000000000..5bb1ae83f7
--- /dev/null
+++ b/libavcodec/vvc/vvc_cabac.h
@@ -0,0 +1,126 @@
+/*
+ * VVC CABAC decoder
+ *
+ * Copyright (C) 2022 Nuo Mi
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VVC_CABAC_H
+#define AVCODEC_VVC_CABAC_H
+
+#include "vvc_ctu.h"
+
+int ff_vvc_cabac_init(VVCLocalContext *lc, int ctu_idx, int rx, int ry);
+
+//sao
+int ff_vvc_sao_merge_flag_decode(VVCLocalContext *lc);
+int ff_vvc_sao_type_idx_decode(VVCLocalContext *lc);
+int ff_vvc_sao_band_position_decode(VVCLocalContext *lc);
+int ff_vvc_sao_offset_abs_decode(VVCLocalContext *lc);
+int ff_vvc_sao_offset_sign_decode(VVCLocalContext *lc);
+int ff_vvc_sao_eo_class_decode(VVCLocalContext *lc);
+
+//alf
+int ff_vvc_alf_ctb_flag(VVCLocalContext *lc, int rx, int ry, int c_idx);
+int ff_vvc_alf_use_aps_flag(VVCLocalContext *lc);
+int ff_vvc_alf_luma_prev_filter_idx(VVCLocalContext *lc);
+int ff_vvc_alf_luma_fixed_filter_idx(VVCLocalContext *lc);
+int ff_vvc_alf_ctb_filter_alt_idx(VVCLocalContext *lc, int c_idx, int num_chroma_filters);
+int ff_vvc_alf_ctb_cc_idc(VVCLocalContext *lc, int rx, int ry, int idx, int cc_filters_signalled);
+
+//coding_tree
+int ff_vvc_split_cu_flag(VVCLocalContext* lc, int x0, int y0, int cb_width, int cb_height,
+    int ch_type, const VVCAllowedSplit *a);
+VVCSplitMode ff_vvc_split_mode(VVCLocalContext *lc,  int x0, int y0, int cb_width, int cb_height,
+    int cqt_depth, int mtt_depth, int ch_type, const VVCAllowedSplit *a);
+int ff_vvc_non_inter_flag(VVCLocalContext *lc, int x0, int y0, int ch_type);
+
+//coding unit
+int ff_vvc_pred_mode_flag(VVCLocalContext *lc, int is_chroma);
+int ff_vvc_pred_mode_plt_flag(VVCLocalContext *lc);
+int ff_vvc_intra_bdpcm_luma_flag(VVCLocalContext *lc);
+int ff_vvc_intra_bdpcm_luma_dir_flag(VVCLocalContext *lc);
+int ff_vvc_intra_bdpcm_chroma_flag(VVCLocalContext *lc);
+int ff_vvc_intra_bdpcm_chroma_dir_flag(VVCLocalContext *lc);
+int ff_vvc_cu_skip_flag(VVCLocalContext *lc, const uint8_t *cu_skip_flag);
+int ff_vvc_pred_mode_ibc_flag(VVCLocalContext *lc, int ch_type);
+int ff_vvc_cu_coded_flag(VVCLocalContext *lc);
+int ff_vvc_cu_qp_delta_abs(VVCLocalContext *lc);
+int ff_vvc_cu_qp_delta_sign_flag(VVCLocalContext *lc);
+int ff_vvc_sbt_flag(VVCLocalContext *lc);
+int ff_vvc_sbt_quad_flag(VVCLocalContext *lc);
+int ff_vvc_sbt_horizontal_flag(VVCLocalContext *lc);
+int ff_vvc_sbt_pos_flag(VVCLocalContext *lc);
+
+//intra
+int ff_vvc_intra_mip_flag(VVCLocalContext *lc, const uint8_t *intra_mip_flag);
+int ff_vvc_intra_mip_transposed_flag(VVCLocalContext *lc);
+int ff_vvc_intra_mip_mode(VVCLocalContext *lc);
+int ff_vvc_intra_luma_ref_idx(VVCLocalContext *lc);
+int ff_vvc_intra_subpartitions_mode_flag(VVCLocalContext *lc);
+enum IspType ff_vvc_isp_split_type(VVCLocalContext *lc, int intra_subpartitions_mode_flag);
+int ff_vvc_intra_luma_mpm_flag(VVCLocalContext *lc);
+int ff_vvc_intra_luma_not_planar_flag(VVCLocalContext *lc, int intra_subpartitions_mode_flag);
+int ff_vvc_intra_luma_mpm_idx(VVCLocalContext *lc);
+int ff_vvc_intra_luma_mpm_remainder(VVCLocalContext *lc);
+int ff_vvc_cclm_mode_flag(VVCLocalContext *lc);
+int ff_vvc_cclm_mode_idx(VVCLocalContext *lc);
+int ff_vvc_intra_chroma_pred_mode(VVCLocalContext *lc);
+
+//inter
+int ff_vvc_general_merge_flag(VVCLocalContext *lc);
+int ff_vvc_merge_subblock_flag(VVCLocalContext *lc);
+int ff_vvc_merge_subblock_idx(VVCLocalContext *lc, int max_num_subblock_merge_cand);
+int ff_vvc_regular_merge_flag(VVCLocalContext *lc, int cu_skip_flag);
+int ff_vvc_merge_idx(VVCLocalContext *lc);
+int ff_vvc_mmvd_merge_flag(VVCLocalContext *lc);
+int ff_vvc_mmvd_cand_flag(VVCLocalContext *lc);
+void ff_vvc_mmvd_offset_coding(VVCLocalContext *lc, Mv *mvd_offset, int ph_mmvd_fullpel_only_flag);
+int ff_vvc_ciip_flag(VVCLocalContext *lc);
+int ff_vvc_merge_gpm_partition_idx(VVCLocalContext *lc);
+int ff_vvc_merge_gpm_idx(VVCLocalContext *lc, int idx);
+PredFlag ff_vvc_pred_flag(VVCLocalContext *lc, int is_b);
+int ff_vvc_inter_affine_flag(VVCLocalContext *lc);
+int ff_vvc_cu_affine_type_flag(VVCLocalContext *lc);
+int ff_vvc_sym_mvd_flag(VVCLocalContext *lc);
+int ff_vvc_ref_idx_lx(VVCLocalContext *lc, uint8_t nb_refs);
+int ff_vvc_abs_mvd_greater0_flag(VVCLocalContext *lc);
+int ff_vvc_abs_mvd_greater1_flag(VVCLocalContext *lc);
+int ff_vvc_abs_mvd_minus2(VVCLocalContext *lc);
+int ff_vvc_mvd_sign_flag(VVCLocalContext *lc);
+int ff_vvc_mvp_lx_flag(VVCLocalContext *lc);
+int ff_vvc_amvr_shift(VVCLocalContext *lc, int inter_affine_flag, PredMode pred_mode, int has_amvr_flag);
+int ff_vvc_bcw_idx(VVCLocalContext *lc, int no_backward_pred_flag);
+
+//transform
+int ff_vvc_tu_cb_coded_flag(VVCLocalContext *lc);
+int ff_vvc_tu_cr_coded_flag(VVCLocalContext *lc, int tu_cb_coded_flag);
+int ff_vvc_tu_y_coded_flag(VVCLocalContext *lc);
+int ff_vvc_cu_chroma_qp_offset_flag(VVCLocalContext *lc);
+int ff_vvc_cu_chroma_qp_offset_idx(VVCLocalContext *lc);
+int ff_vvc_tu_joint_cbcr_residual_flag(VVCLocalContext *lc, int tu_cb_coded_flag, int tu_cr_coded_flag);
+int ff_vvc_transform_skip_flag(VVCLocalContext *lc, int ctx);
+int ff_vvc_residual_coding(VVCLocalContext *lc, TransformBlock *tb);
+int ff_vvc_lfnst_idx(VVCLocalContext *lc, int inc);
+int ff_vvc_mts_idx(VVCLocalContext *lc);
+
+int ff_vvc_end_of_slice_flag_decode(VVCLocalContext *lc);
+int ff_vvc_end_of_tile_one_bit(VVCLocalContext *lc);
+int ff_vvc_end_of_subset_one_bit(VVCLocalContext *lc);
+
+#endif //AVCODEC_VVC_CABAC_H
diff --git a/libavcodec/vvc/vvc_ctu.c b/libavcodec/vvc/vvc_ctu.c
new file mode 100644
index 0000000000..78b13ffb00
--- /dev/null
+++ b/libavcodec/vvc/vvc_ctu.c
@@ -0,0 +1,32 @@
+/*
+ * VVC CTU(Coding Tree Unit) parser
+ *
+ * Copyright (C) 2022 Nuo Mi
+ *
+ * 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
+ */
+
+#include "vvc_ctu.h"
+
+void ff_vvc_ep_init_stat_coeff(EntryPoint *ep,
+	const int bit_depth, const int persistent_rice_adaptation_enabled_flag)
+{
+    for (size_t i = 0; i < FF_ARRAY_ELEMS(ep->stat_coeff); ++i) {
+        ep->stat_coeff[i] =
+            persistent_rice_adaptation_enabled_flag ? 2 * (av_log2(bit_depth - 10)) : 0;
+    }
+}
diff --git a/libavcodec/vvc/vvc_ctu.h b/libavcodec/vvc/vvc_ctu.h
new file mode 100644
index 0000000000..eb917dcb55
--- /dev/null
+++ b/libavcodec/vvc/vvc_ctu.h
@@ -0,0 +1,463 @@
+/*
+ * VVC CTU(Coding Tree Unit) parser
+ *
+ * Copyright (C) 2022 Nuo Mi
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_VVC_CTU_H
+#define AVCODEC_VVC_CTU_H
+
+#include "libavcodec/cabac.h"
+#include "libavutil/mem_internal.h"
+
+#include "vvcdec.h"
+
+#define MAX_CTU_SIZE            128
+
+#define MAX_CU_SIZE             MAX_CTU_SIZE
+#define MIN_CU_SIZE             4
+#define MIN_CU_LOG2             2
+#define MAX_CU_DEPTH            7
+
+#define MAX_PARTS_IN_CTU        ((MAX_CTU_SIZE >> MIN_CU_LOG2) * (MAX_CTU_SIZE >> MIN_CU_LOG2))
+
+#define MIN_PU_SIZE             4
+
+#define MAX_TB_SIZE             64
+#define MIN_TU_SIZE             4
+#define MAX_TUS_IN_CU           64
+
+#define MAX_QP                  63
+
+#define MAX_PB_SIZE             128
+#define EDGE_EMU_BUFFER_STRIDE  (MAX_PB_SIZE + 32)
+
+#define CHROMA_EXTRA_BEFORE     1
+#define CHROMA_EXTRA_AFTER      2
+#define CHROMA_EXTRA            3
+#define LUMA_EXTRA_BEFORE       3
+#define LUMA_EXTRA_AFTER        4
+#define LUMA_EXTRA              7
+#define BILINEAR_EXTRA_BEFORE   0
+#define BILINEAR_EXTRA_AFTER    1
+#define BILINEAR_EXTRA          1
+
+#define MAX_CONTROL_POINTS      3
+
+#define AFFINE_MIN_BLOCK_SIZE   4
+
+#define MRG_MAX_NUM_CANDS       6
+#define MAX_NUM_HMVP_CANDS      5
+
+#define SAO_PADDING_SIZE        1
+
+#define ALF_PADDING_SIZE        8
+#define ALF_BLOCK_SIZE          4
+
+#define ALF_BORDER_LUMA         3
+#define ALF_BORDER_CHROMA       2
+
+#define ALF_VB_POS_ABOVE_LUMA   4
+#define ALF_VB_POS_ABOVE_CHROMA 2
+
+#define ALF_GRADIENT_STEP       2
+#define ALF_GRADIENT_BORDER     2
+#define ALF_GRADIENT_SIZE       ((MAX_CU_SIZE + ALF_GRADIENT_BORDER * 2) / ALF_GRADIENT_STEP)
+#define ALF_NUM_DIR             4
+
+
+/**
+ * Value of the luma sample at position (x, y) in the 2D array tab.
+ */
+#define SAMPLE(tab, x, y) ((tab)[(y) * s->sps->width + (x)])
+#define SAMPLE_CTB(tab, x, y) ((tab)[(y) * min_cb_width + (x)])
+#define CTB(tab, x, y) ((tab)[(y) * fc->ps.pps->ctb_width + (x)])
+
+enum SAOType {
+    SAO_NOT_APPLIED = 0,
+    SAO_BAND,
+    SAO_EDGE,
+};
+
+enum SAOEOClass {
+    SAO_EO_HORIZ = 0,
+    SAO_EO_VERT,
+    SAO_EO_135D,
+    SAO_EO_45D,
+};
+
+typedef struct NeighbourAvailable {
+    int cand_left;
+    int cand_up;
+    int cand_up_left;
+    int cand_up_right;
+    int cand_up_right_sap;
+} NeighbourAvailable;
+
+enum IspType{
+    ISP_NO_SPLIT,
+    ISP_HOR_SPLIT,
+    ISP_VER_SPLIT,
+};
+
+typedef enum VVCSplitMode {
+    SPLIT_NONE,
+    SPLIT_TT_HOR,
+    SPLIT_BT_HOR,
+    SPLIT_TT_VER,
+    SPLIT_BT_VER,
+    SPLIT_QT,
+} VVCSplitMode;
+
+typedef enum MtsIdx {
+    MTS_DCT2_DCT2,
+    MTS_DST7_DST7,
+    MTS_DST7_DCT8,
+    MTS_DCT8_DST7,
+    MTS_DCT8_DCT8,
+} MtsIdx;
+
+typedef struct TransformBlock {
+    uint8_t has_coeffs;
+    uint8_t c_idx;
+    uint8_t ts;             ///<  transform_skip_flag
+    int x0;
+    int y0;
+
+    int tb_width;
+    int tb_height;
+    int log2_tb_width;
+    int log2_tb_height;
+
+    int max_scan_x;
+    int max_scan_y;
+    int min_scan_x;
+    int min_scan_y;
+
+    int qp;
+    int rect_non_ts_flag;
+    int bd_shift;
+    int bd_offset;
+
+    int *coeffs;
+} TransformBlock;
+
+typedef enum VVCTreeType {
+    SINGLE_TREE,
+    DUAL_TREE_LUMA,
+    DUAL_TREE_CHROMA,
+} VVCTreeType;
+
+typedef struct TransformUnit {
+    int x0;
+    int y0;
+    int width;
+    int height;
+
+    uint8_t joint_cbcr_residual_flag;                   ///< tu_joint_cbcr_residual_flag
+
+    uint8_t coded_flag[VVC_MAX_SAMPLE_ARRAYS];          ///< tu_y_coded_flag, tu_cb_coded_flag, tu_cr_coded_flag
+    uint8_t nb_tbs;
+    TransformBlock tbs[VVC_MAX_SAMPLE_ARRAYS];
+
+    struct TransformUnit *next;                         ///< RefStruct reference
+} TransformUnit;
+
+typedef enum PredMode {
+    MODE_INTER,
+    MODE_INTRA,
+    MODE_SKIP,
+    MODE_PLT,
+    MODE_IBC,
+} PredMode;
+
+typedef struct Mv {
+    int x;  ///< horizontal component of motion vector
+    int y;  ///< vertical component of motion vector
+} Mv;
+
+typedef struct MvField {
+    DECLARE_ALIGNED(4, Mv, mv)[2];  ///< mvL0, vvL1
+    int8_t  ref_idx[2];             ///< refIdxL0, refIdxL1
+    uint8_t hpel_if_idx;            ///< hpelIfIdx
+    uint8_t bcw_idx;                ///< bcwIdx
+    uint8_t pred_flag;
+    uint8_t ciip_flag;              ///< ciip_flag
+} MvField;
+
+typedef struct DMVRInfo {
+    DECLARE_ALIGNED(4, Mv, mv)[2];  ///< mvL0, vvL1
+    uint8_t dmvr_enabled;
+} DMVRInfo;
+
+typedef enum MotionModelIdc {
+    MOTION_TRANSLATION,
+    MOTION_4_PARAMS_AFFINE,
+    MOTION_6_PARAMS_AFFINE,
+} MotionModelIdc;
+
+typedef enum PredFlag {
+    PF_INTRA = 0x0,
+    PF_L0    = 0x1,
+    PF_L1    = 0x2,
+    PF_BI    = 0x3,
+} PredFlag;
+
+typedef enum IntraPredMode {
+    INTRA_INVALID   = -1,
+    INTRA_PLANAR    = 0,
+    INTRA_DC,
+    INTRA_HORZ      = 18,
+    INTRA_DIAG      = 34,
+    INTRA_VERT      = 50,
+    INTRA_VDIAG     = 66,
+    INTRA_LT_CCLM   = 81,
+    INTRA_L_CCLM,
+    INTRA_T_CCLM
+} IntraPredMode;
+
+typedef struct MotionInfo {
+    MotionModelIdc motion_model_idc; ///< MotionModelIdc
+    int8_t   ref_idx[2];             ///< refIdxL0, refIdxL1
+    uint8_t  hpel_if_idx;            ///< hpelIfIdx
+    uint8_t  bcw_idx;                ///< bcwIdx
+    PredFlag pred_flag;
+
+    Mv mv[2][MAX_CONTROL_POINTS];
+
+    int num_sb_x, num_sb_y;
+} MotionInfo;
+
+typedef struct PredictionUnit {
+    uint8_t general_merge_flag;
+    uint8_t mmvd_merge_flag;
+    //InterPredIdc inter_pred_idc;
+    uint8_t inter_affine_flag;
+
+    //subblock predict
+    uint8_t merge_subblock_flag;
+
+    uint8_t merge_gpm_flag;
+    uint8_t gpm_partition_idx;
+    MvField gpm_mv[2];
+
+    int sym_mvd_flag;
+
+    MotionInfo mi;
+
+    // for regular prediction only
+    uint8_t dmvr_flag;
+    uint8_t bdof_flag;
+
+    int16_t diff_mv_x[2][AFFINE_MIN_BLOCK_SIZE * AFFINE_MIN_BLOCK_SIZE];   ///< diffMvLX
+    int16_t diff_mv_y[2][AFFINE_MIN_BLOCK_SIZE * AFFINE_MIN_BLOCK_SIZE];   ///< diffMvLX
+    int cb_prof_flag[2];
+} PredictionUnit;
+
+typedef struct CodingUnit {
+    VVCTreeType tree_type;
+    int x0;
+    int y0;
+    int cb_width;
+    int cb_height;
+    int ch_type;
+    int cqt_depth;
+
+    uint8_t coded_flag;
+
+    uint8_t sbt_flag;
+    uint8_t sbt_horizontal_flag;
+    uint8_t sbt_pos_flag;
+
+    int lfnst_idx;
+    MtsIdx mts_idx;
+
+    uint8_t act_enabled_flag;
+
+    uint8_t intra_luma_ref_idx;                     ///< IntraLumaRefLineIdx[][]
+    uint8_t intra_mip_flag;                         ///< intra_mip_flag
+    uint8_t skip_flag;                              ///< cu_skip_flag;
+
+    //inter
+    uint8_t ciip_flag;
+
+    // Inferred parameters
+    enum IspType isp_split_type;                    ///< IntraSubPartitionsSplitType
+
+    enum PredMode pred_mode;                        ///< PredMode
+
+    int num_intra_subpartitions;
+
+    IntraPredMode intra_pred_mode_y;                ///< IntraPredModeY
+    IntraPredMode intra_pred_mode_c;                ///< IntraPredModeC
+    int mip_chroma_direct_flag;                     ///< MipChromaDirectFlag
+
+    int bdpcm_flag[VVC_MAX_SAMPLE_ARRAYS];          ///< BdpcmFlag
+
+    int apply_lfnst_flag[VVC_MAX_SAMPLE_ARRAYS];    ///< ApplyLfnstFlag[]
+
+    struct {
+        TransformUnit *head;                        ///< RefStruct reference
+        TransformUnit *tail;                        ///< RefStruct reference
+    } tus;
+
+    int8_t qp[4];                                   ///< QpY, Qp′Cb, Qp′Cr, Qp′CbCr
+
+    PredictionUnit pu;
+
+    struct CodingUnit *next;                        ///< RefStruct reference
+} CodingUnit;
+
+typedef struct CTU {
+    CodingUnit *cus;
+    int max_y[2][VVC_MAX_REF_ENTRIES];
+    int max_y_idx[2];
+} CTU;
+
+typedef struct ReconstructedArea {
+    int x;
+    int y;
+    int w;
+    int h;
+} ReconstructedArea;
+
+typedef struct VVCCabacState {
+    uint16_t state[2];
+    uint8_t  shift[2];
+} VVCCabacState;
+
+// VVC_CONTEXTS matched with SYNTAX_ELEMENT_LAST, it's checked by cabac_init_state.
+#define VVC_CONTEXTS 378
+typedef struct EntryPoint {
+    int8_t qp_y;                                    ///< QpY
+
+    int stat_coeff[VVC_MAX_SAMPLE_ARRAYS];          ///< StatCoeff
+
+    VVCCabacState cabac_state[VVC_CONTEXTS];
+    CABACContext cc;
+
+    int ctu_start;
+    int ctu_end;
+
+    uint8_t is_first_qg;                            // first quantization group
+    MvField hmvp[MAX_NUM_HMVP_CANDS];               ///< HmvpCandList
+    int     num_hmvp;                               ///< NumHmvpCand
+} EntryPoint;
+
+typedef struct VVCLocalContext {
+    uint8_t ctb_left_flag;
+    uint8_t ctb_up_flag;
+    uint8_t ctb_up_right_flag;
+    uint8_t ctb_up_left_flag;
+    int     end_of_tiles_x;
+    int     end_of_tiles_y;
+
+    /* +7 is for subpixel interpolation, *2 for high bit depths */
+    DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
+    /* The extended size between the new edge emu buffer is abused by SAO */
+    DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer2)[(MAX_PB_SIZE + 7) * EDGE_EMU_BUFFER_STRIDE * 2];
+    DECLARE_ALIGNED(32, int16_t, tmp)[MAX_PB_SIZE * MAX_PB_SIZE];
+    DECLARE_ALIGNED(32, int16_t, tmp1)[MAX_PB_SIZE * MAX_PB_SIZE];
+    DECLARE_ALIGNED(32, int16_t, tmp2)[MAX_PB_SIZE * MAX_PB_SIZE];
+    DECLARE_ALIGNED(32, uint8_t, ciip_tmp1)[MAX_PB_SIZE * MAX_PB_SIZE * 2];
+    DECLARE_ALIGNED(32, uint8_t, ciip_tmp2)[MAX_PB_SIZE * MAX_PB_SIZE * 2];
+    DECLARE_ALIGNED(32, uint8_t, sao_buffer)[(MAX_CTU_SIZE + 2 * SAO_PADDING_SIZE) * EDGE_EMU_BUFFER_STRIDE * 2];
+    DECLARE_ALIGNED(32, uint8_t, alf_buffer_luma)[(MAX_CTU_SIZE + 2 * ALF_PADDING_SIZE) * EDGE_EMU_BUFFER_STRIDE * 2];
+    DECLARE_ALIGNED(32, uint8_t, alf_buffer_chroma)[(MAX_CTU_SIZE + 2 * ALF_PADDING_SIZE) * EDGE_EMU_BUFFER_STRIDE * 2];
+    DECLARE_ALIGNED(32, int32_t, alf_gradient_tmp)[ALF_GRADIENT_SIZE * ALF_GRADIENT_SIZE * ALF_NUM_DIR];
+
+    struct {
+        int sbt_num_fourths_tb0;                ///< SbtNumFourthsTb0
+
+        uint8_t is_cu_qp_delta_coded;           ///< IsCuQpDeltaCoded
+        int cu_qg_top_left_x;                   ///< CuQgTopLeftX
+        int cu_qg_top_left_y;                   ///< CuQgTopLeftY
+        int is_cu_chroma_qp_offset_coded;       ///< IsCuChromaQpOffsetCoded
+        int chroma_qp_offset[3];                ///< CuQpOffsetCb, CuQpOffsetCr, CuQpOffsetCbCr
+
+        int infer_tu_cbf_luma;                  ///< InferTuCbfLuma
+        int prev_tu_cbf_y;                      ///< prevTuCbfY;
+
+        int lfnst_dc_only;                      ///< LfnstDcOnly
+        int lfnst_zero_out_sig_coeff_flag;      ///< LfnstZeroOutSigCoeffFlag
+
+        int mts_dc_only;                        ///< MtsDcOnly
+        int mts_zero_out_sig_coeff_flag;        ///< MtsZeroOutSigCoeffFlag;
+    } parse;
+
+    struct {
+        // lmcs cache, for recon only
+        int chroma_scale;
+        int x_vpdu;
+        int y_vpdu;
+    } lmcs;
+
+    CodingUnit *cu;
+    ReconstructedArea ras[2][MAX_PARTS_IN_CTU];
+    int  num_ras[2];
+
+    NeighbourAvailable na;
+
+#define BOUNDARY_LEFT_SLICE     (1 << 0)
+#define BOUNDARY_LEFT_TILE      (1 << 1)
+#define BOUNDARY_UPPER_SLICE    (1 << 2)
+#define BOUNDARY_UPPER_TILE     (1 << 3)
+    /* properties of the boundary of the current CTB for the purposes
+     * of the deblocking filter */
+    int boundary_flags;
+
+    SliceContext *sc;
+    VVCFrameContext *fc;
+    EntryPoint *ep;
+    int *coeffs;
+} VVCLocalContext;
+
+typedef struct VVCAllowedSplit {
+    int qt;
+    int btv;
+    int bth;
+    int ttv;
+    int tth;
+} VVCAllowedSplit;
+
+typedef struct SAOParams {
+    int offset_abs[3][4];               ///< sao_offset_abs
+    int offset_sign[3][4];              ///< sao_offset_sign
+
+    uint8_t band_position[3];           ///< sao_band_position
+
+    int eo_class[3];                    ///< sao_eo_class
+
+    int16_t offset_val[3][5];           ///<SaoOffsetVal
+
+    uint8_t type_idx[3];                ///< sao_type_idx
+} SAOParams;
+
+typedef struct ALFParams {
+    uint8_t ctb_flag[3];                ///< alf_ctb_flag[]
+    uint8_t ctb_filt_set_idx_y;         ///< AlfCtbFiltSetIdxY
+    uint8_t alf_ctb_filter_alt_idx[2];  ///< alf_ctb_filter_alt_idx[]
+    uint8_t ctb_cc_idc[2];              ///< alf_ctb_cc_cb_idc, alf_ctb_cc_cr_idc
+
+    uint8_t applied[3];
+} ALFParams;
+
+void ff_vvc_ep_init_stat_coeff(EntryPoint *ep, int bit_depth, int persistent_rice_adaptation_enabled_flag);
+
+#endif // AVCODEC_VVC_CTU_H
diff --git a/libavcodec/vvc/vvcdec.h b/libavcodec/vvc/vvcdec.h
index fbbedbec00..746ee41661 100644
--- a/libavcodec/vvc/vvcdec.h
+++ b/libavcodec/vvc/vvcdec.h
@@ -80,6 +80,7 @@ typedef struct VVCFrame {
 
 typedef struct SliceContext {
     int slice_idx;
+    VVCSH sh;
     struct EntryPoint *eps;
     int nb_eps;
     RefPicList *rpl;
@@ -94,6 +95,8 @@ typedef struct VVCFrameContext {
     struct AVFrame *frame;
     struct AVFrame *output_frame;
 
+    VVCFrameParamSets ps;
+
     SliceContext  **slices;
     int nb_slices;
     int nb_slices_allocated;
@@ -113,6 +116,10 @@ typedef struct VVCFrameContext {
     struct {
         int16_t *slice_idx;
 
+        DBParams  *deblock;
+        struct SAOParams *sao;
+        struct ALFParams *alf;
+
         int     *cb_pos_x[2];                           ///< CbPosX[][][]
         int     *cb_pos_y[2];                           ///< CbPosY[][][]
         uint8_t *cb_width[2];                           ///< CbWidth[][][]
