/*****************************************************************************

 * cavlc.c: cavlc bitstream writing

 *****************************************************************************

 * Copyright (C) 2003-2025 x264 project

 *

 * Authors: Laurent Aimar <fenrir@via.ecp.fr>

 *          Loren Merritt <lorenm@u.washington.edu>

 *          Fiona Glaser <fiona@x264.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.

 *

 * This program is also available under a commercial proprietary license.

 * For more information, contact us at licensing@x264.com.

 *****************************************************************************/

#include "common/common.h"

#include "macroblock.h"

#ifndef RDO_SKIP_BS

#define RDO_SKIP_BS 0

#endif

/* [400,420][inter,intra] */

static const uint8_t cbp_to_golomb[2][2][48] =

{

    {{ 0,  1,  2,  5,  3,  6, 14, 10,  4, 15,  7, 11,  8, 12, 13,  9 },

     { 1, 10, 11,  6, 12,  7, 14,  2, 13, 15,  8,  3,  9,  4,  5,  0 }},

    {{ 0,  2,  3,  7,  4,  8, 17, 13,  5, 18,  9, 14, 10, 15, 16, 11,

       1, 32, 33, 36, 34, 37, 44, 40, 35, 45, 38, 41, 39, 42, 43, 19,

       6, 24, 25, 20, 26, 21, 46, 28, 27, 47, 22, 29, 23, 30, 31, 12 },

     { 3, 29, 30, 17, 31, 18, 37,  8, 32, 38, 19,  9, 20, 10, 11,  2,

      16, 33, 34, 21, 35, 22, 39,  4, 36, 40, 23,  5, 24,  6,  7,  1,

      41, 42, 43, 25, 44, 26, 46, 12, 45, 47, 27, 13, 28, 14, 15,  0 }}

};

static const uint8_t mb_type_b_to_golomb[3][9]=

{

    { 4,  8, 12, 10,  6, 14, 16, 18, 20 }, /* D_16x8 */

    { 5,  9, 13, 11,  7, 15, 17, 19, 21 }, /* D_8x16 */

    { 1, -1, -1, -1,  2, -1, -1, -1,  3 }  /* D_16x16 */

};

static const uint8_t subpartition_p_to_golomb[4]=

{

    3, 1, 2, 0

};

static const uint8_t subpartition_b_to_golomb[13]=

{

    10,  4,  5,  1, 11,  6,  7,  2, 12,  8,  9,  3,  0

};

#define bs_write_vlc(s,v) bs_write( s, (v).i_size, (v).i_bits )

/****************************************************************************

 * x264_cavlc_block_residual:

 ****************************************************************************/

static inline int cavlc_block_residual_escape( x264_t *h, int i_suffix_length, int level )

{

    bs_t *s = &h->out.bs;

    static const uint16_t next_suffix[7] = { 0, 3, 6, 12, 24, 48, 0xffff };

    int i_level_prefix = 15;

    int mask = level >> 31;

    int abs_level = (level^mask)-mask;

    int i_level_code = abs_level*2-mask-2;

    if( ( i_level_code >> i_suffix_length ) < 15 )

    {

        bs_write( s, (i_level_code >> i_suffix_length) + 1 + i_suffix_length,

                 (1<<i_suffix_length) + (i_level_code & ((1<<i_suffix_length)-1)) );

    }

    else

    {

        i_level_code -= 15 << i_suffix_length;

        if( i_suffix_length == 0 )

            i_level_code -= 15;

        /* If the prefix size exceeds 15, High Profile is required. */

        if( i_level_code >= 1<<12 )

        {

            if( h->sps->i_profile_idc >= PROFILE_HIGH )

            {

                while( i_level_code >= 1<<(i_level_prefix-3) )

                {

                    i_level_code -= 1<<(i_level_prefix-3);

                    i_level_prefix++;

                }

            }

            else

            {

#if RDO_SKIP_BS

                /* Weight highly against overflows. */

                s->i_bits_encoded += 2000;

#else

                /* We've had an overflow; note it down and re-encode the MB later. */

                h->mb.b_overflow = 1;

#endif

            }

        }

        bs_write( s, i_level_prefix + 1, 1 );

        bs_write( s, i_level_prefix - 3, i_level_code & ((1<<(i_level_prefix-3))-1) );

    }

    if( i_suffix_length == 0 )

        i_suffix_length++;

    if( abs_level > next_suffix[i_suffix_length] )

        i_suffix_length++;

    return i_suffix_length;

}

Unexecuted instantiation: analyse.c:cavlc_block_residual_escape

Unexecuted instantiation: cavlc.c:cavlc_block_residual_escape

static int cavlc_block_residual_internal( x264_t *h, int ctx_block_cat, dctcoef *l, int nC )

{

    bs_t *s = &h->out.bs;

    static const uint8_t ctz_index[8] = {3,0,1,0,2,0,1,0};

    static const uint8_t count_cat[14] = {16, 15, 16, 0, 15, 64, 16, 15, 16, 64, 16, 15, 16, 64};

    x264_run_level_t runlevel;

    int i_total, i_trailing, i_total_zero, i_suffix_length;

    unsigned int i_sign;

    /* level and run and total */

    i_total = h->quantf.coeff_level_run[ctx_block_cat]( l, &runlevel );

    x264_prefetch( &x264_run_before[runlevel.mask] );

    i_total_zero = runlevel.last + 1 - i_total;

    /* branchless i_trailing calculation */

    runlevel.level[i_total+0] = 2;

    runlevel.level[i_total+1] = 2;

    i_trailing = ((((runlevel.level[0]+1) | (1-runlevel.level[0])) >> 31) & 1) // abs(runlevel.level[0])>1

               | ((((runlevel.level[1]+1) | (1-runlevel.level[1])) >> 31) & 2)

               | ((((runlevel.level[2]+1) | (1-runlevel.level[2])) >> 31) & 4);

    i_trailing = ctz_index[i_trailing];

    i_sign = ((runlevel.level[2] >> 31) & 1)

           | ((runlevel.level[1] >> 31) & 2)

           | ((runlevel.level[0] >> 31) & 4);

    i_sign >>= 3-i_trailing;

    /* total/trailing */

    bs_write_vlc( s, x264_coeff_token[nC][i_total-1][i_trailing] );

    i_suffix_length = i_total > 10 && i_trailing < 3;

    bs_write( s, i_trailing, i_sign );

    if( i_trailing < i_total )

    {

        int val = runlevel.level[i_trailing];

        int val_original = runlevel.level[i_trailing]+LEVEL_TABLE_SIZE/2;

        val -= ((val>>31)|1) & -(i_trailing < 3); /* as runlevel.level[i] can't be 1 for the first one if i_trailing < 3 */

        val += LEVEL_TABLE_SIZE/2;

        if( (unsigned)val_original < LEVEL_TABLE_SIZE )

        {

            bs_write_vlc( s, x264_level_token[i_suffix_length][val] );

            i_suffix_length = x264_level_token[i_suffix_length][val_original].i_next;

        }

        else

            i_suffix_length = cavlc_block_residual_escape( h, i_suffix_length, val-LEVEL_TABLE_SIZE/2 );

        for( int i = i_trailing+1; i < i_total; i++ )

        {

            val = runlevel.level[i] + LEVEL_TABLE_SIZE/2;

            if( (unsigned)val < LEVEL_TABLE_SIZE )

            {

                bs_write_vlc( s, x264_level_token[i_suffix_length][val] );

                i_suffix_length = x264_level_token[i_suffix_length][val].i_next;

            }

            else

                i_suffix_length = cavlc_block_residual_escape( h, i_suffix_length, val-LEVEL_TABLE_SIZE/2 );

        }

    }

    if( ctx_block_cat == DCT_CHROMA_DC )

    {

        if( i_total < 8>>CHROMA_V_SHIFT )

        {

            vlc_t total_zeros = CHROMA_FORMAT == CHROMA_420 ? x264_total_zeros_2x2_dc[i_total-1][i_total_zero]

                                                            : x264_total_zeros_2x4_dc[i_total-1][i_total_zero];

            bs_write_vlc( s, total_zeros );

        }

    }

    else if( (uint8_t)i_total < count_cat[ctx_block_cat] )

        bs_write_vlc( s, x264_total_zeros[i_total-1][i_total_zero] );

    int zero_run_code = x264_run_before[runlevel.mask];

    bs_write( s, zero_run_code&0x1f, zero_run_code>>5 );

    return i_total;

}

Unexecuted instantiation: analyse.c:cavlc_block_residual_internal

Unexecuted instantiation: cavlc.c:cavlc_block_residual_internal

static const uint8_t ct_index[17] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,3};

#define x264_cavlc_block_residual(h,cat,idx,l)\

{\

    int nC = cat == DCT_CHROMA_DC ? 5 - CHROMA_V_SHIFT\

                                  : ct_index[x264_mb_predict_non_zero_code( h, cat == DCT_LUMA_DC ? (idx - LUMA_DC)*16 : idx )];\

    uint8_t *nnz = &h->mb.cache.non_zero_count[x264_scan8[idx]];\

    if( !*nnz )\

        bs_write_vlc( &h->out.bs, x264_coeff0_token[nC] );\

    else\

        *nnz = cavlc_block_residual_internal(h,cat,l,nC);\

}

static void cavlc_qp_delta( x264_t *h )

{

    bs_t *s = &h->out.bs;

    int i_dqp = h->mb.i_qp - h->mb.i_last_qp;

    /* Avoid writing a delta quant if we have an empty i16x16 block, e.g. in a completely

     * flat background area. Don't do this if it would raise the quantizer, since that could

     * cause unexpected deblocking artifacts. */

    if( h->mb.i_type == I_16x16 && !(h->mb.i_cbp_luma | h->mb.i_cbp_chroma)

        && !h->mb.cache.non_zero_count[x264_scan8[LUMA_DC]]

        && !h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+0]]

        && !h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+1]]

        && h->mb.i_qp > h->mb.i_last_qp )

    {

#if !RDO_SKIP_BS

        h->mb.i_qp = h->mb.i_last_qp;

#endif

        i_dqp = 0;

    }

    if( i_dqp )

    {

        if( i_dqp < -(QP_MAX_SPEC+1)/2 )

            i_dqp += QP_MAX_SPEC+1;

        else if( i_dqp > QP_MAX_SPEC/2 )

            i_dqp -= QP_MAX_SPEC+1;

    }

    bs_write_se( s, i_dqp );

}

Unexecuted instantiation: analyse.c:cavlc_qp_delta

Unexecuted instantiation: cavlc.c:cavlc_qp_delta

static void cavlc_mvd( x264_t *h, int i_list, int idx, int width )

{

    bs_t *s = &h->out.bs;

    ALIGNED_4( int16_t mvp[2] );

    x264_mb_predict_mv( h, i_list, idx, width, mvp );

    bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[idx]][0] - mvp[0] );

    bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[idx]][1] - mvp[1] );

}

Unexecuted instantiation: analyse.c:cavlc_mvd

Unexecuted instantiation: cavlc.c:cavlc_mvd

static inline void cavlc_8x8_mvd( x264_t *h, int i )

{

    switch( h->mb.i_sub_partition[i] )

    {

        case D_L0_8x8:

            cavlc_mvd( h, 0, 4*i, 2 );

            break;

        case D_L0_8x4:

            cavlc_mvd( h, 0, 4*i+0, 2 );

            cavlc_mvd( h, 0, 4*i+2, 2 );

            break;

        case D_L0_4x8:

            cavlc_mvd( h, 0, 4*i+0, 1 );

            cavlc_mvd( h, 0, 4*i+1, 1 );

            break;

        case D_L0_4x4:

            cavlc_mvd( h, 0, 4*i+0, 1 );

            cavlc_mvd( h, 0, 4*i+1, 1 );

            cavlc_mvd( h, 0, 4*i+2, 1 );

            cavlc_mvd( h, 0, 4*i+3, 1 );

            break;

    }

}

Unexecuted instantiation: analyse.c:cavlc_8x8_mvd

Unexecuted instantiation: cavlc.c:cavlc_8x8_mvd

static ALWAYS_INLINE void cavlc_macroblock_luma_residual( x264_t *h, int plane_count )

{

    if( h->mb.b_transform_8x8 )

    {

        /* shuffle 8x8 dct coeffs into 4x4 lists */

        for( int p = 0; p < plane_count; p++ )

            for( int i8 = 0; i8 < 4; i8++ )

                if( h->mb.cache.non_zero_count[x264_scan8[p*16+i8*4]] )

                    h->zigzagf.interleave_8x8_cavlc( h->dct.luma4x4[p*16+i8*4], h->dct.luma8x8[p*4+i8],

                                                     &h->mb.cache.non_zero_count[x264_scan8[p*16+i8*4]] );

    }

    for( int p = 0; p < plane_count; p++ )

        FOREACH_BIT( i8, 0, h->mb.i_cbp_luma )

            for( int i4 = 0; i4 < 4; i4++ )

                x264_cavlc_block_residual( h, DCT_LUMA_4x4, i4+i8*4+p*16, h->dct.luma4x4[i4+i8*4+p*16] );

}

Unexecuted instantiation: analyse.c:cavlc_macroblock_luma_residual

Unexecuted instantiation: cavlc.c:cavlc_macroblock_luma_residual

#if RDO_SKIP_BS

static ALWAYS_INLINE void cavlc_partition_luma_residual( x264_t *h, int i8, int p )

{

    if( h->mb.b_transform_8x8 && h->mb.cache.non_zero_count[x264_scan8[i8*4+p*16]] )

        h->zigzagf.interleave_8x8_cavlc( h->dct.luma4x4[i8*4+p*16], h->dct.luma8x8[i8+p*4],

                                         &h->mb.cache.non_zero_count[x264_scan8[i8*4+p*16]] );

    if( h->mb.i_cbp_luma & (1 << i8) )

        for( int i4 = 0; i4 < 4; i4++ )

            x264_cavlc_block_residual( h, DCT_LUMA_4x4, i4+i8*4+p*16, h->dct.luma4x4[i4+i8*4+p*16] );

}

#endif

static void cavlc_mb_header_i( x264_t *h, int i_mb_type, int i_mb_i_offset, int chroma )

{

    bs_t *s = &h->out.bs;

    if( i_mb_type == I_16x16 )

    {

        bs_write_ue( s, i_mb_i_offset + 1 + x264_mb_pred_mode16x16_fix[h->mb.i_intra16x16_pred_mode] +

                        h->mb.i_cbp_chroma * 4 + ( h->mb.i_cbp_luma == 0 ? 0 : 12 ) );

    }

    else //if( i_mb_type == I_4x4 || i_mb_type == I_8x8 )

    {

        int di = i_mb_type == I_8x8 ? 4 : 1;

        bs_write_ue( s, i_mb_i_offset + 0 );

        if( h->pps->b_transform_8x8_mode )

            bs_write1( s, h->mb.b_transform_8x8 );

        /* Prediction: Luma */

        for( int i = 0; i < 16; i += di )

        {

            int i_pred = x264_mb_predict_intra4x4_mode( h, i );

            int i_mode = x264_mb_pred_mode4x4_fix( h->mb.cache.intra4x4_pred_mode[x264_scan8[i]] );

            if( i_pred == i_mode )

                bs_write1( s, 1 );  /* b_prev_intra4x4_pred_mode */

            else

                bs_write( s, 4, i_mode - (i_mode > i_pred) );

        }

    }

    if( chroma )

        bs_write_ue( s, x264_mb_chroma_pred_mode_fix[h->mb.i_chroma_pred_mode] );

}

Unexecuted instantiation: analyse.c:cavlc_mb_header_i

Unexecuted instantiation: cavlc.c:cavlc_mb_header_i

static ALWAYS_INLINE void cavlc_mb_header_p( x264_t *h, int i_mb_type, int chroma )

{

    bs_t *s = &h->out.bs;

    if( i_mb_type == P_L0 )

    {

        if( h->mb.i_partition == D_16x16 )

        {

            bs_write1( s, 1 );

            if( h->mb.pic.i_fref[0] > 1 )

                bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[0]] );

            cavlc_mvd( h, 0, 0, 4 );

        }

        else if( h->mb.i_partition == D_16x8 )

        {

            bs_write_ue( s, 1 );

            if( h->mb.pic.i_fref[0] > 1 )

            {

                bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[0]] );

                bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[8]] );

            }

            cavlc_mvd( h, 0, 0, 4 );

            cavlc_mvd( h, 0, 8, 4 );

        }

        else if( h->mb.i_partition == D_8x16 )

        {

            bs_write_ue( s, 2 );

            if( h->mb.pic.i_fref[0] > 1 )

            {

                bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[0]] );

                bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[4]] );

            }

            cavlc_mvd( h, 0, 0, 2 );

            cavlc_mvd( h, 0, 4, 2 );

        }

    }

    else if( i_mb_type == P_8x8 )

    {

        int b_sub_ref;

        if( (h->mb.cache.ref[0][x264_scan8[0]] | h->mb.cache.ref[0][x264_scan8[ 4]] |

             h->mb.cache.ref[0][x264_scan8[8]] | h->mb.cache.ref[0][x264_scan8[12]]) == 0 )

        {

            bs_write_ue( s, 4 );

            b_sub_ref = 0;

        }

        else

        {

            bs_write_ue( s, 3 );

            b_sub_ref = 1;

        }

        /* sub mb type */

        if( h->param.analyse.inter & X264_ANALYSE_PSUB8x8 )

            for( int i = 0; i < 4; i++ )

                bs_write_ue( s, subpartition_p_to_golomb[ h->mb.i_sub_partition[i] ] );

        else

            bs_write( s, 4, 0xf );

        /* ref0 */

        if( b_sub_ref )

        {

            bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[0]] );

            bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[4]] );

            bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[8]] );

            bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[12]] );

        }

        for( int i = 0; i < 4; i++ )

            cavlc_8x8_mvd( h, i );

    }

    else //if( IS_INTRA( i_mb_type ) )

        cavlc_mb_header_i( h, i_mb_type, 5, chroma );

}

Unexecuted instantiation: analyse.c:cavlc_mb_header_p

Unexecuted instantiation: cavlc.c:cavlc_mb_header_p

static ALWAYS_INLINE void cavlc_mb_header_b( x264_t *h, int i_mb_type, int chroma )

{

    bs_t *s = &h->out.bs;

    if( i_mb_type == B_8x8 )

    {

        bs_write_ue( s, 22 );

        /* sub mb type */

        for( int i = 0; i < 4; i++ )

            bs_write_ue( s, subpartition_b_to_golomb[ h->mb.i_sub_partition[i] ] );

        /* ref */

        if( h->mb.pic.i_fref[0] > 1 )

            for( int i = 0; i < 4; i++ )

                if( x264_mb_partition_listX_table[0][ h->mb.i_sub_partition[i] ] )

                    bs_write_te( s, h->mb.pic.i_fref[0] - 1, h->mb.cache.ref[0][x264_scan8[i*4]] );

        if( h->mb.pic.i_fref[1] > 1 )

            for( int i = 0; i < 4; i++ )

                if( x264_mb_partition_listX_table[1][ h->mb.i_sub_partition[i] ] )

                    bs_write_te( s, h->mb.pic.i_fref[1] - 1, h->mb.cache.ref[1][x264_scan8[i*4]] );

        /* mvd */

        for( int i = 0; i < 4; i++ )

            if( x264_mb_partition_listX_table[0][ h->mb.i_sub_partition[i] ] )

                cavlc_mvd( h, 0, 4*i, 2 );

        for( int i = 0; i < 4; i++ )

            if( x264_mb_partition_listX_table[1][ h->mb.i_sub_partition[i] ] )

                cavlc_mvd( h, 1, 4*i, 2 );

    }

    else if( i_mb_type >= B_L0_L0 && i_mb_type <= B_BI_BI )

    {

        /* All B mode */

        /* Motion Vector */

        const uint8_t (*b_list)[2] = x264_mb_type_list_table[i_mb_type];

        const int i_ref0_max = h->mb.pic.i_fref[0] - 1;

        const int i_ref1_max = h->mb.pic.i_fref[1] - 1;

        bs_write_ue( s, mb_type_b_to_golomb[ h->mb.i_partition - D_16x8 ][ i_mb_type - B_L0_L0 ] );

        if( h->mb.i_partition == D_16x16 )

        {

            if( i_ref0_max && b_list[0][0] ) bs_write_te( s, i_ref0_max, h->mb.cache.ref[0][x264_scan8[0]] );

            if( i_ref1_max && b_list[1][0] ) bs_write_te( s, i_ref1_max, h->mb.cache.ref[1][x264_scan8[0]] );

            if( b_list[0][0] ) cavlc_mvd( h, 0, 0, 4 );

            if( b_list[1][0] ) cavlc_mvd( h, 1, 0, 4 );

        }

        else

        {

            if( i_ref0_max && b_list[0][0] ) bs_write_te( s, i_ref0_max, h->mb.cache.ref[0][x264_scan8[ 0]] );

            if( i_ref0_max && b_list[0][1] ) bs_write_te( s, i_ref0_max, h->mb.cache.ref[0][x264_scan8[12]] );

            if( i_ref1_max && b_list[1][0] ) bs_write_te( s, i_ref1_max, h->mb.cache.ref[1][x264_scan8[ 0]] );

            if( i_ref1_max && b_list[1][1] ) bs_write_te( s, i_ref1_max, h->mb.cache.ref[1][x264_scan8[12]] );

            if( h->mb.i_partition == D_16x8 )

            {

                if( b_list[0][0] ) cavlc_mvd( h, 0, 0, 4 );

                if( b_list[0][1] ) cavlc_mvd( h, 0, 8, 4 );

                if( b_list[1][0] ) cavlc_mvd( h, 1, 0, 4 );

                if( b_list[1][1] ) cavlc_mvd( h, 1, 8, 4 );

            }

            else //if( h->mb.i_partition == D_8x16 )

            {

                if( b_list[0][0] ) cavlc_mvd( h, 0, 0, 2 );

                if( b_list[0][1] ) cavlc_mvd( h, 0, 4, 2 );

                if( b_list[1][0] ) cavlc_mvd( h, 1, 0, 2 );

                if( b_list[1][1] ) cavlc_mvd( h, 1, 4, 2 );

            }

        }

    }

    else if( i_mb_type == B_DIRECT )

        bs_write1( s, 1 );

    else //if( IS_INTRA( i_mb_type ) )

        cavlc_mb_header_i( h, i_mb_type, 23, chroma );

}

Unexecuted instantiation: analyse.c:cavlc_mb_header_b

Unexecuted instantiation: cavlc.c:cavlc_mb_header_b

/*****************************************************************************

 * x264_macroblock_write:

 *****************************************************************************/

void x264_macroblock_write_cavlc( x264_t *h )

{

    bs_t *s = &h->out.bs;

    const int i_mb_type = h->mb.i_type;

    int plane_count = CHROMA444 ? 3 : 1;

    int chroma = CHROMA_FORMAT == CHROMA_420 || CHROMA_FORMAT == CHROMA_422;

#if RDO_SKIP_BS

    s->i_bits_encoded = 0;

#else

    const int i_mb_pos_start = bs_pos( s );

    int       i_mb_pos_tex;

#endif

    if( SLICE_MBAFF

        && (!(h->mb.i_mb_y & 1) || IS_SKIP(h->mb.type[h->mb.i_mb_xy - h->mb.i_mb_stride])) )

    {

        bs_write1( s, MB_INTERLACED );

#if !RDO_SKIP_BS

        h->mb.field_decoding_flag = MB_INTERLACED;

#endif

    }

#if !RDO_SKIP_BS

    if( i_mb_type == I_PCM )

    {

        static const uint8_t i_offsets[3] = {5,23,0};

        uint8_t *p_start = s->p_start;

        bs_write_ue( s, i_offsets[h->sh.i_type] + 25 );

        i_mb_pos_tex = bs_pos( s );

        h->stat.frame.i_mv_bits += i_mb_pos_tex - i_mb_pos_start;

        bs_align_0( s );

        for( int p = 0; p < plane_count; p++ )

            for( int i = 0; i < 256; i++ )

                bs_write( s, BIT_DEPTH, h->mb.pic.p_fenc[p][i] );

        if( chroma )

            for( int ch = 1; ch < 3; ch++ )

                for( int i = 0; i < 16>>CHROMA_V_SHIFT; i++ )

                    for( int j = 0; j < 8; j++ )

                        bs_write( s, BIT_DEPTH, h->mb.pic.p_fenc[ch][i*FENC_STRIDE+j] );

        bs_init( s, s->p, s->p_end - s->p );

        s->p_start = p_start;

        h->stat.frame.i_tex_bits += bs_pos(s) - i_mb_pos_tex;

        return;

    }

#endif

    if( h->sh.i_type == SLICE_TYPE_P )

        cavlc_mb_header_p( h, i_mb_type, chroma );

    else if( h->sh.i_type == SLICE_TYPE_B )

        cavlc_mb_header_b( h, i_mb_type, chroma );

    else //if( h->sh.i_type == SLICE_TYPE_I )

        cavlc_mb_header_i( h, i_mb_type, 0, chroma );

#if !RDO_SKIP_BS

    i_mb_pos_tex = bs_pos( s );

    h->stat.frame.i_mv_bits += i_mb_pos_tex - i_mb_pos_start;

#endif

    /* Coded block pattern */

    if( i_mb_type != I_16x16 )

        bs_write_ue( s, cbp_to_golomb[chroma][IS_INTRA(i_mb_type)][(h->mb.i_cbp_chroma << 4)|h->mb.i_cbp_luma] );

    /* transform size 8x8 flag */

    if( x264_mb_transform_8x8_allowed( h ) && h->mb.i_cbp_luma )

        bs_write1( s, h->mb.b_transform_8x8 );

    if( i_mb_type == I_16x16 )

    {

        cavlc_qp_delta( h );

        /* DC Luma */

        for( int p = 0; p < plane_count; p++ )

        {

            x264_cavlc_block_residual( h, DCT_LUMA_DC, LUMA_DC+p, h->dct.luma16x16_dc[p] );

            /* AC Luma */

            if( h->mb.i_cbp_luma )

                for( int i = p*16; i < p*16+16; i++ )

                    x264_cavlc_block_residual( h, DCT_LUMA_AC, i, h->dct.luma4x4[i]+1 );

        }

    }

    else if( h->mb.i_cbp_luma | h->mb.i_cbp_chroma )

    {

        cavlc_qp_delta( h );

        cavlc_macroblock_luma_residual( h, plane_count );

    }

    if( h->mb.i_cbp_chroma )

    {

        /* Chroma DC residual present */

        x264_cavlc_block_residual( h, DCT_CHROMA_DC, CHROMA_DC+0, h->dct.chroma_dc[0] );

        x264_cavlc_block_residual( h, DCT_CHROMA_DC, CHROMA_DC+1, h->dct.chroma_dc[1] );

        if( h->mb.i_cbp_chroma == 2 ) /* Chroma AC residual present */

        {

            int step = 8 << CHROMA_V_SHIFT;

            for( int i = 16; i < 3*16; i += step )

                for( int j = i; j < i+4; j++ )

                    x264_cavlc_block_residual( h, DCT_CHROMA_AC, j, h->dct.luma4x4[j]+1 );

        }

    }

#if !RDO_SKIP_BS

    h->stat.frame.i_tex_bits += bs_pos(s) - i_mb_pos_tex;

#endif

}

Unexecuted instantiation: analyse.c:macroblock_size_cavlc

Unexecuted instantiation: x264_8_macroblock_write_cavlc

Unexecuted instantiation: x264_10_macroblock_write_cavlc

#if RDO_SKIP_BS

/*****************************************************************************

 * RD only; doesn't generate a valid bitstream

 * doesn't write cbp or chroma dc (I don't know how much this matters)

 * doesn't write ref (never varies between calls, so no point in doing so)

 * only writes subpartition for p8x8, needed for sub-8x8 mode decision RDO

 * works on all partition sizes except 16x16

 *****************************************************************************/

static int partition_size_cavlc( x264_t *h, int i8, int i_pixel )

{

    bs_t *s = &h->out.bs;

    const int i_mb_type = h->mb.i_type;

    int b_8x16 = h->mb.i_partition == D_8x16;

    int plane_count = CHROMA444 ? 3 : 1;

    int j;

    h->out.bs.i_bits_encoded = 0;

    if( i_mb_type == P_8x8 )

    {

        cavlc_8x8_mvd( h, i8 );

        bs_write_ue( s, subpartition_p_to_golomb[ h->mb.i_sub_partition[i8] ] );

    }

    else if( i_mb_type == P_L0 )

        cavlc_mvd( h, 0, 4*i8, 4>>b_8x16 );

    else if( i_mb_type > B_DIRECT && i_mb_type < B_8x8 )

    {

        if( x264_mb_type_list_table[ i_mb_type ][0][!!i8] ) cavlc_mvd( h, 0, 4*i8, 4>>b_8x16 );

        if( x264_mb_type_list_table[ i_mb_type ][1][!!i8] ) cavlc_mvd( h, 1, 4*i8, 4>>b_8x16 );

    }

    else //if( i_mb_type == B_8x8 )

    {

        if( x264_mb_partition_listX_table[0][ h->mb.i_sub_partition[i8] ] )

            cavlc_mvd( h, 0, 4*i8, 2 );

        if( x264_mb_partition_listX_table[1][ h->mb.i_sub_partition[i8] ] )

            cavlc_mvd( h, 1, 4*i8, 2 );

    }

    for( j = (i_pixel < PIXEL_8x8); j >= 0; j-- )

    {

        for( int p = 0; p < plane_count; p++ )

            cavlc_partition_luma_residual( h, i8, p );

        if( h->mb.i_cbp_chroma )

        {

            if( CHROMA_FORMAT == CHROMA_422 )

            {

                int offset = (5*i8) & 0x09;

                x264_cavlc_block_residual( h, DCT_CHROMA_AC, 16+offset, h->dct.luma4x4[16+offset]+1 );

                x264_cavlc_block_residual( h, DCT_CHROMA_AC, 18+offset, h->dct.luma4x4[18+offset]+1 );

                x264_cavlc_block_residual( h, DCT_CHROMA_AC, 32+offset, h->dct.luma4x4[32+offset]+1 );

                x264_cavlc_block_residual( h, DCT_CHROMA_AC, 34+offset, h->dct.luma4x4[34+offset]+1 );

            }

            else

            {

                x264_cavlc_block_residual( h, DCT_CHROMA_AC, 16+i8, h->dct.luma4x4[16+i8]+1 );

                x264_cavlc_block_residual( h, DCT_CHROMA_AC, 32+i8, h->dct.luma4x4[32+i8]+1 );

            }

        }

        i8 += x264_pixel_size[i_pixel].h >> 3;

    }

    return h->out.bs.i_bits_encoded;

}

static int subpartition_size_cavlc( x264_t *h, int i4, int i_pixel )

{

    int plane_count = CHROMA444 ? 3 : 1;

    int b_8x4 = i_pixel == PIXEL_8x4;

    h->out.bs.i_bits_encoded = 0;

    cavlc_mvd( h, 0, i4, 1+b_8x4 );

    for( int p = 0; p < plane_count; p++ )

    {

        x264_cavlc_block_residual( h, DCT_LUMA_4x4, p*16+i4, h->dct.luma4x4[p*16+i4] );

        if( i_pixel != PIXEL_4x4 )

            x264_cavlc_block_residual( h, DCT_LUMA_4x4, p*16+i4+2-b_8x4, h->dct.luma4x4[p*16+i4+2-b_8x4] );

    }

    return h->out.bs.i_bits_encoded;

}

static int cavlc_intra4x4_pred_size( x264_t *h, int i4, int i_mode )

{

    if( x264_mb_predict_intra4x4_mode( h, i4 ) == x264_mb_pred_mode4x4_fix( i_mode ) )

        return 1;

    else

        return 4;

}

static int partition_i8x8_size_cavlc( x264_t *h, int i8, int i_mode )

{

    int plane_count = CHROMA444 ? 3 : 1;

    h->out.bs.i_bits_encoded = cavlc_intra4x4_pred_size( h, 4*i8, i_mode );

    bs_write_ue( &h->out.bs, cbp_to_golomb[!CHROMA444][1][(h->mb.i_cbp_chroma << 4)|h->mb.i_cbp_luma] );

    for( int p = 0; p < plane_count; p++ )

        cavlc_partition_luma_residual( h, i8, p );

    return h->out.bs.i_bits_encoded;

}

static int partition_i4x4_size_cavlc( x264_t *h, int i4, int i_mode )

{

    int plane_count = CHROMA444 ? 3 : 1;

    h->out.bs.i_bits_encoded = cavlc_intra4x4_pred_size( h, i4, i_mode );

    for( int p = 0; p < plane_count; p++ )

        x264_cavlc_block_residual( h, DCT_LUMA_4x4, p*16+i4, h->dct.luma4x4[p*16+i4] );

    return h->out.bs.i_bits_encoded;

}

static int chroma_size_cavlc( x264_t *h )

{

    h->out.bs.i_bits_encoded = bs_size_ue( x264_mb_chroma_pred_mode_fix[h->mb.i_chroma_pred_mode] );

    if( h->mb.i_cbp_chroma )

    {

        x264_cavlc_block_residual( h, DCT_CHROMA_DC, CHROMA_DC+0, h->dct.chroma_dc[0] );

        x264_cavlc_block_residual( h, DCT_CHROMA_DC, CHROMA_DC+1, h->dct.chroma_dc[1] );

        if( h->mb.i_cbp_chroma == 2 )

        {

            int step = 8 << CHROMA_V_SHIFT;

            for( int i = 16; i < 3*16; i += step )

                for( int j = i; j < i+4; j++ )

                    x264_cavlc_block_residual( h, DCT_CHROMA_AC, j, h->dct.luma4x4[j]+1 );

        }

    }

    return h->out.bs.i_bits_encoded;

}

#endif