| /***************************************************************************** |
| * cavlc.c: h264 encoder library |
| ***************************************************************************** |
| * Copyright (C) 2003-2008 x264 project |
| * |
| * Authors: Laurent Aimar <fenrir@via.ecp.fr> |
| * Loren Merritt <lorenm@u.washington.edu> |
| * Jason Garrett-Glaser <darkshikari@gmail.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. |
| *****************************************************************************/ |
| |
| #include "common/common.h" |
| #include "macroblock.h" |
| |
| #ifndef RDO_SKIP_BS |
| #define RDO_SKIP_BS 0 |
| #endif |
| |
| static const uint8_t intra4x4_cbp_to_golomb[48]= |
| { |
| 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 inter_cbp_to_golomb[48]= |
| { |
| 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 |
| }; |
| 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 sub_mb_type_p_to_golomb[4]= |
| { |
| 3, 1, 2, 0 |
| }; |
| static const uint8_t sub_mb_type_b_to_golomb[13]= |
| { |
| 10, 4, 5, 1, 11, 6, 7, 2, 12, 8, 9, 3, 0 |
| }; |
| |
| static inline void bs_write_vlc( bs_t *s, vlc_t v ) |
| { |
| bs_write( s, v.i_size, v.i_bits ); |
| } |
| |
| /**************************************************************************** |
| * block_residual_write_cavlc: |
| ****************************************************************************/ |
| static void block_residual_write_cavlc( x264_t *h, bs_t *s, int i_ctxBlockCat, int i_idx, int16_t *l, int i_count ) |
| { |
| static const int ct_index[17] = {0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,3}; |
| int level[16], run[16]; |
| int i_total, i_trailing; |
| int i_total_zero; |
| int i_last; |
| unsigned int i_sign; |
| int i; |
| int idx = 0; |
| int i_suffix_length; |
| /* x264_mb_predict_non_zero_code return 0 <-> (16+16+1)>>1 = 16 */ |
| int nC = i_idx >= 25 ? 4 : ct_index[x264_mb_predict_non_zero_code( h, i_idx == 24 ? 0 : i_idx )]; |
| |
| if( !h->mb.cache.non_zero_count[x264_scan8[i_idx]] ) |
| { |
| bs_write_vlc( s, x264_coeff_token[nC][0] ); |
| return; |
| } |
| |
| i_last = h->quantf.coeff_last[i_ctxBlockCat](l); |
| i_sign = 0; |
| i_total = 0; |
| i_trailing = 0; |
| i_total_zero = i_last + 1; |
| |
| /* level and run and total */ |
| while( i_last >= 0 ) |
| { |
| int r = 0; |
| level[idx] = l[i_last]; |
| while( --i_last >= 0 && l[i_last] == 0 ) |
| r++; |
| run[idx++] = r; |
| } |
| |
| i_total = idx; |
| i_total_zero -= idx; |
| |
| i_trailing = X264_MIN(3, idx); |
| for( idx = 0; idx < i_trailing; idx++ ) |
| { |
| if( (unsigned)(level[idx]+1) > 2 ) |
| { |
| i_trailing = idx; |
| break; |
| } |
| i_sign <<= 1; |
| i_sign |= level[idx] < 0; |
| } |
| |
| /* total/trailing */ |
| bs_write_vlc( s, x264_coeff_token[nC][i_total*4+i_trailing] ); |
| |
| i_suffix_length = i_total > 10 && i_trailing < 3 ? 1 : 0; |
| if( i_trailing > 0 ) |
| bs_write( s, i_trailing, i_sign ); |
| for( i = i_trailing; i < i_total; i++ ) |
| { |
| int mask = level[i] >> 15; |
| int abs_level = (level[i]^mask)-mask; |
| int i_level_code = abs_level*2-mask-2; |
| |
| if( i == i_trailing && i_trailing < 3 ) |
| i_level_code -= 2; /* as level[i] can't be 1 for the first one if i_trailing < 3 */ |
| |
| if( ( i_level_code >> i_suffix_length ) < 14 ) |
| 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 if( i_suffix_length == 0 && i_level_code < 30 ) |
| bs_write( s, 19, (1<<4) + (i_level_code - 14) ); |
| else if( i_suffix_length > 0 && ( i_level_code >> i_suffix_length ) == 14 ) |
| bs_write( s, 15 + i_suffix_length, |
| (1<<i_suffix_length) + (i_level_code & ((1<<i_suffix_length)-1)) ); |
| else |
| { |
| int i_level_prefix = 15; |
| 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 += 1000000; |
| #else |
| x264_log(h, X264_LOG_WARNING, "OVERFLOW levelcode=%d is only allowed in High Profile", i_level_code ); |
| /* clip level, preserving sign */ |
| i_level_code = (1<<12) - 2 + (i_level_code & 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 > (3 << (i_suffix_length-1)) && i_suffix_length < 6 ) |
| i_suffix_length++; |
| } |
| |
| if( i_total < i_count ) |
| { |
| if( i_idx >= 25 ) |
| bs_write_vlc( s, x264_total_zeros_dc[i_total-1][i_total_zero] ); |
| else |
| bs_write_vlc( s, x264_total_zeros[i_total-1][i_total_zero] ); |
| } |
| |
| for( i = 0; i < i_total-1 && i_total_zero > 0; i++ ) |
| { |
| int i_zl = X264_MIN( i_total_zero - 1, 6 ); |
| bs_write_vlc( s, x264_run_before[i_zl][run[i]] ); |
| i_total_zero -= run[i]; |
| } |
| } |
| |
| static void cavlc_qp_delta( x264_t *h, bs_t *s ) |
| { |
| 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 */ |
| 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[24]] ) |
| { |
| #if !RDO_SKIP_BS |
| h->mb.i_qp = h->mb.i_last_qp; |
| #endif |
| i_dqp = 0; |
| } |
| |
| if( i_dqp ) |
| { |
| if( i_dqp < -26 ) |
| i_dqp += 52; |
| else if( i_dqp > 25 ) |
| i_dqp -= 52; |
| } |
| bs_write_se( s, i_dqp ); |
| } |
| |
| static void cavlc_mb_mvd( x264_t *h, bs_t *s, int i_list, int idx, int width ) |
| { |
| DECLARE_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] ); |
| } |
| |
| static void cavlc_mb8x8_mvd( x264_t *h, bs_t *s, int i_list, int i ) |
| { |
| if( !x264_mb_partition_listX_table[i_list][ h->mb.i_sub_partition[i] ] ) |
| return; |
| |
| switch( h->mb.i_sub_partition[i] ) |
| { |
| case D_L0_8x8: |
| case D_L1_8x8: |
| case D_BI_8x8: |
| cavlc_mb_mvd( h, s, i_list, 4*i, 2 ); |
| break; |
| case D_L0_8x4: |
| case D_L1_8x4: |
| case D_BI_8x4: |
| cavlc_mb_mvd( h, s, i_list, 4*i+0, 2 ); |
| cavlc_mb_mvd( h, s, i_list, 4*i+2, 2 ); |
| break; |
| case D_L0_4x8: |
| case D_L1_4x8: |
| case D_BI_4x8: |
| cavlc_mb_mvd( h, s, i_list, 4*i+0, 1 ); |
| cavlc_mb_mvd( h, s, i_list, 4*i+1, 1 ); |
| break; |
| case D_L0_4x4: |
| case D_L1_4x4: |
| case D_BI_4x4: |
| cavlc_mb_mvd( h, s, i_list, 4*i+0, 1 ); |
| cavlc_mb_mvd( h, s, i_list, 4*i+1, 1 ); |
| cavlc_mb_mvd( h, s, i_list, 4*i+2, 1 ); |
| cavlc_mb_mvd( h, s, i_list, 4*i+3, 1 ); |
| break; |
| } |
| } |
| |
| static inline void x264_macroblock_luma_write_cavlc( x264_t *h, bs_t *s, int i8start, int i8end ) |
| { |
| int i8, i4; |
| if( h->mb.b_transform_8x8 ) |
| { |
| /* shuffle 8x8 dct coeffs into 4x4 lists */ |
| for( i8 = i8start; i8 <= i8end; i8++ ) |
| if( h->mb.i_cbp_luma & (1 << i8) ) |
| h->zigzagf.interleave_8x8_cavlc( h->dct.luma4x4[i8*4], h->dct.luma8x8[i8] ); |
| } |
| |
| for( i8 = i8start; i8 <= i8end; i8++ ) |
| if( h->mb.i_cbp_luma & (1 << i8) ) |
| for( i4 = 0; i4 < 4; i4++ ) |
| { |
| h->mb.cache.non_zero_count[x264_scan8[i4+i8*4]] = array_non_zero_count( h->dct.luma4x4[i4+i8*4] ); |
| block_residual_write_cavlc( h, s, DCT_LUMA_4x4, i4+i8*4, h->dct.luma4x4[i4+i8*4], 16 ); |
| } |
| } |
| |
| /***************************************************************************** |
| * x264_macroblock_write: |
| *****************************************************************************/ |
| void x264_macroblock_write_cavlc( x264_t *h, bs_t *s ) |
| { |
| const int i_mb_type = h->mb.i_type; |
| int i_mb_i_offset; |
| int i; |
| |
| #if !RDO_SKIP_BS |
| const int i_mb_pos_start = bs_pos( s ); |
| int i_mb_pos_tex; |
| #endif |
| |
| switch( h->sh.i_type ) |
| { |
| case SLICE_TYPE_I: |
| i_mb_i_offset = 0; |
| break; |
| case SLICE_TYPE_P: |
| i_mb_i_offset = 5; |
| break; |
| case SLICE_TYPE_B: |
| i_mb_i_offset = 23; |
| break; |
| default: |
| x264_log(h, X264_LOG_ERROR, "internal error or slice unsupported\n" ); |
| return; |
| } |
| |
| if( h->sh.b_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, h->mb.b_interlaced ); |
| } |
| |
| #if !RDO_SKIP_BS |
| if( i_mb_type == I_PCM) |
| { |
| bs_write_ue( s, i_mb_i_offset + 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 ); |
| |
| memcpy( s->p, h->mb.pic.p_fenc[0], 256 ); |
| s->p += 256; |
| for( i = 0; i < 8; i++ ) |
| memcpy( s->p + i*8, h->mb.pic.p_fenc[1] + i*FENC_STRIDE, 8 ); |
| s->p += 64; |
| for( i = 0; i < 8; i++ ) |
| memcpy( s->p + i*8, h->mb.pic.p_fenc[2] + i*FENC_STRIDE, 8 ); |
| s->p += 64; |
| |
| /* if PCM is chosen, we need to store reconstructed frame data */ |
| h->mc.copy[PIXEL_16x16]( h->mb.pic.p_fdec[0], FDEC_STRIDE, h->mb.pic.p_fenc[0], FENC_STRIDE, 16 ); |
| h->mc.copy[PIXEL_8x8] ( h->mb.pic.p_fdec[1], FDEC_STRIDE, h->mb.pic.p_fenc[1], FENC_STRIDE, 8 ); |
| h->mc.copy[PIXEL_8x8] ( h->mb.pic.p_fdec[2], FDEC_STRIDE, h->mb.pic.p_fenc[2], FENC_STRIDE, 8 ); |
| |
| h->stat.frame.i_tex_bits += bs_pos(s) - i_mb_pos_tex; |
| return; |
| } |
| #endif |
| |
| /* Write: |
| - type |
| - prediction |
| - mv */ |
| 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( 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) ); |
| } |
| bs_write_ue( s, x264_mb_pred_mode8x8c_fix[ h->mb.i_chroma_pred_mode ] ); |
| } |
| else 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 ) ); |
| bs_write_ue( s, x264_mb_pred_mode8x8c_fix[ h->mb.i_chroma_pred_mode ] ); |
| } |
| else if( i_mb_type == P_L0 ) |
| { |
| DECLARE_ALIGNED_4( int16_t mvp[2] ); |
| |
| if( h->mb.i_partition == D_16x16 ) |
| { |
| bs_write_ue( s, 0 ); |
| |
| 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]] ); |
| x264_mb_predict_mv( h, 0, 0, 4, mvp ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[0]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[0]][1] - mvp[1] ); |
| } |
| 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]] ); |
| } |
| |
| x264_mb_predict_mv( h, 0, 0, 4, mvp ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[0]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[0]][1] - mvp[1] ); |
| |
| x264_mb_predict_mv( h, 0, 8, 4, mvp ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[8]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[8]][1] - mvp[1] ); |
| } |
| 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]] ); |
| } |
| |
| x264_mb_predict_mv( h, 0, 0, 2, mvp ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[0]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[0]][1] - mvp[1] ); |
| |
| x264_mb_predict_mv( h, 0, 4, 2, mvp ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[4]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[0][x264_scan8[4]][1] - mvp[1] ); |
| } |
| } |
| else if( i_mb_type == P_8x8 ) |
| { |
| int b_sub_ref0; |
| 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_ref0 = 0; |
| } |
| else |
| { |
| bs_write_ue( s, 3 ); |
| b_sub_ref0 = 1; |
| } |
| |
| /* sub mb type */ |
| if( h->param.analyse.inter & X264_ANALYSE_PSUB8x8 ) |
| for( i = 0; i < 4; i++ ) |
| bs_write_ue( s, sub_mb_type_p_to_golomb[ h->mb.i_sub_partition[i] ] ); |
| else |
| bs_write( s, 4, 0xf ); |
| |
| /* ref0 */ |
| if( h->mb.pic.i_fref[0] > 1 && b_sub_ref0 ) |
| { |
| 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( i = 0; i < 4; i++ ) |
| cavlc_mb8x8_mvd( h, s, 0, i ); |
| } |
| else if( i_mb_type == B_8x8 ) |
| { |
| bs_write_ue( s, 22 ); |
| |
| /* sub mb type */ |
| for( i = 0; i < 4; i++ ) |
| bs_write_ue( s, sub_mb_type_b_to_golomb[ h->mb.i_sub_partition[i] ] ); |
| |
| /* ref */ |
| for( 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]] ); |
| for( 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( i = 0; i < 4; i++ ) |
| cavlc_mb8x8_mvd( h, s, 0, i ); |
| for( i = 0; i < 4; i++ ) |
| cavlc_mb8x8_mvd( h, s, 1, i ); |
| } |
| else if( i_mb_type != B_DIRECT ) |
| { |
| /* All B mode */ |
| /* Motion Vector */ |
| int i_list; |
| DECLARE_ALIGNED_4( int16_t mvp[2] ); |
| |
| int b_list[2][2]; |
| |
| /* init ref list utilisations */ |
| for( i = 0; i < 2; i++ ) |
| { |
| b_list[0][i] = x264_mb_type_list0_table[i_mb_type][i]; |
| b_list[1][i] = x264_mb_type_list1_table[i_mb_type][i]; |
| } |
| |
| bs_write_ue( s, mb_type_b_to_golomb[ h->mb.i_partition - D_16x8 ][ i_mb_type - B_L0_L0 ] ); |
| |
| for( i_list = 0; i_list < 2; i_list++ ) |
| { |
| const int i_ref_max = (i_list == 0 ? h->mb.pic.i_fref[0] : h->mb.pic.i_fref[1]) - 1; |
| |
| if( i_ref_max ) |
| switch( h->mb.i_partition ) |
| { |
| case D_16x16: |
| if( b_list[i_list][0] ) bs_write_te( s, i_ref_max, h->mb.cache.ref[i_list][x264_scan8[0]] ); |
| break; |
| case D_16x8: |
| if( b_list[i_list][0] ) bs_write_te( s, i_ref_max, h->mb.cache.ref[i_list][x264_scan8[0]] ); |
| if( b_list[i_list][1] ) bs_write_te( s, i_ref_max, h->mb.cache.ref[i_list][x264_scan8[8]] ); |
| break; |
| case D_8x16: |
| if( b_list[i_list][0] ) bs_write_te( s, i_ref_max, h->mb.cache.ref[i_list][x264_scan8[0]] ); |
| if( b_list[i_list][1] ) bs_write_te( s, i_ref_max, h->mb.cache.ref[i_list][x264_scan8[4]] ); |
| break; |
| } |
| } |
| for( i_list = 0; i_list < 2; i_list++ ) |
| { |
| switch( h->mb.i_partition ) |
| { |
| case D_16x16: |
| if( b_list[i_list][0] ) |
| { |
| x264_mb_predict_mv( h, i_list, 0, 4, mvp ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[0]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[0]][1] - mvp[1] ); |
| } |
| break; |
| case D_16x8: |
| if( b_list[i_list][0] ) |
| { |
| x264_mb_predict_mv( h, i_list, 0, 4, mvp ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[0]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[0]][1] - mvp[1] ); |
| } |
| if( b_list[i_list][1] ) |
| { |
| x264_mb_predict_mv( h, i_list, 8, 4, mvp ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[8]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[8]][1] - mvp[1] ); |
| } |
| break; |
| case D_8x16: |
| if( b_list[i_list][0] ) |
| { |
| x264_mb_predict_mv( h, i_list, 0, 2, mvp ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[0]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[0]][1] - mvp[1] ); |
| } |
| if( b_list[i_list][1] ) |
| { |
| x264_mb_predict_mv( h, i_list, 4, 2, mvp ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[4]][0] - mvp[0] ); |
| bs_write_se( s, h->mb.cache.mv[i_list][x264_scan8[4]][1] - mvp[1] ); |
| } |
| break; |
| } |
| } |
| } |
| else if( i_mb_type == B_DIRECT ) |
| bs_write_ue( s, 0 ); |
| else |
| { |
| x264_log(h, X264_LOG_ERROR, "invalid/unhandled mb_type\n" ); |
| return; |
| } |
| |
| #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 patern */ |
| if( i_mb_type == I_4x4 || i_mb_type == I_8x8 ) |
| bs_write_ue( s, intra4x4_cbp_to_golomb[( h->mb.i_cbp_chroma << 4 )|h->mb.i_cbp_luma] ); |
| else if( i_mb_type != I_16x16 ) |
| bs_write_ue( s, inter_cbp_to_golomb[( 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 ); |
| |
| /* write residual */ |
| if( i_mb_type == I_16x16 ) |
| { |
| cavlc_qp_delta( h, s ); |
| |
| /* DC Luma */ |
| block_residual_write_cavlc( h, s, DCT_LUMA_DC, 24 , h->dct.luma16x16_dc, 16 ); |
| |
| /* AC Luma */ |
| if( h->mb.i_cbp_luma ) |
| for( i = 0; i < 16; i++ ) |
| { |
| h->mb.cache.non_zero_count[x264_scan8[i]] = array_non_zero_count( h->dct.luma4x4[i] ); |
| block_residual_write_cavlc( h, s, DCT_LUMA_AC, i, h->dct.luma4x4[i]+1, 15 ); |
| } |
| } |
| else if( h->mb.i_cbp_luma | h->mb.i_cbp_chroma ) |
| { |
| cavlc_qp_delta( h, s ); |
| x264_macroblock_luma_write_cavlc( h, s, 0, 3 ); |
| } |
| if( h->mb.i_cbp_chroma ) |
| { |
| /* Chroma DC residual present */ |
| block_residual_write_cavlc( h, s, DCT_CHROMA_DC, 25, h->dct.chroma_dc[0], 4 ); |
| block_residual_write_cavlc( h, s, DCT_CHROMA_DC, 26, h->dct.chroma_dc[1], 4 ); |
| if( h->mb.i_cbp_chroma&0x02 ) /* Chroma AC residual present */ |
| for( i = 16; i < 24; i++ ) |
| { |
| h->mb.cache.non_zero_count[x264_scan8[i]] = array_non_zero_count( h->dct.luma4x4[i] ); |
| block_residual_write_cavlc( h, s, DCT_CHROMA_AC, i, h->dct.luma4x4[i]+1, 15 ); |
| } |
| } |
| |
| #if !RDO_SKIP_BS |
| h->stat.frame.i_tex_bits += bs_pos(s) - i_mb_pos_tex; |
| #endif |
| } |
| |
| #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 or subpartition (never varies between calls, so no point in doing so) |
| * works on all partition sizes except 16x16 |
| * for sub8x8, call once per 8x8 block |
| *****************************************************************************/ |
| static int x264_partition_size_cavlc( x264_t *h, int i8, int i_pixel ) |
| { |
| bs_t s; |
| const int i_mb_type = h->mb.i_type; |
| int b_8x16 = h->mb.i_partition == D_8x16; |
| int j; |
| |
| s.i_bits_encoded = 0; |
| |
| if( i_mb_type == P_8x8 ) |
| cavlc_mb8x8_mvd( h, &s, 0, i8 ); |
| else if( i_mb_type == P_L0 ) |
| cavlc_mb_mvd( h, &s, 0, 4*i8, 4>>b_8x16 ); |
| else if( i_mb_type > B_DIRECT && i_mb_type < B_8x8 ) |
| { |
| if( x264_mb_type_list0_table[ i_mb_type ][!!i8] ) cavlc_mb_mvd( h, &s, 0, 4*i8, 4>>b_8x16 ); |
| if( x264_mb_type_list1_table[ i_mb_type ][!!i8] ) cavlc_mb_mvd( h, &s, 1, 4*i8, 4>>b_8x16 ); |
| } |
| else if( i_mb_type == B_8x8 ) |
| { |
| cavlc_mb8x8_mvd( h, &s, 0, i8 ); |
| cavlc_mb8x8_mvd( h, &s, 1, i8 ); |
| } |
| else |
| { |
| x264_log(h, X264_LOG_ERROR, "invalid/unhandled mb_type\n" ); |
| return 0; |
| } |
| |
| for( j = (i_pixel < PIXEL_8x8); j >= 0; j-- ) |
| { |
| x264_macroblock_luma_write_cavlc( h, &s, i8, i8 ); |
| h->mb.cache.non_zero_count[x264_scan8[16+i8]] = array_non_zero_count( h->dct.luma4x4[16+i8] ); |
| block_residual_write_cavlc( h, &s, DCT_CHROMA_AC, 16+i8, h->dct.luma4x4[16+i8]+1, 15 ); |
| h->mb.cache.non_zero_count[x264_scan8[20+i8]] = array_non_zero_count( h->dct.luma4x4[20+i8] ); |
| block_residual_write_cavlc( h, &s, DCT_CHROMA_AC, 20+i8, h->dct.luma4x4[20+i8]+1, 15 ); |
| i8 += x264_pixel_size[i_pixel].h >> 3; |
| } |
| |
| return s.i_bits_encoded; |
| } |
| |
| static int x264_subpartition_size_cavlc( x264_t *h, int i4, int i_pixel ) |
| { |
| bs_t s; |
| int b_8x4 = i_pixel == PIXEL_8x4; |
| s.i_bits_encoded = 0; |
| cavlc_mb_mvd( h, &s, 0, i4, 1+b_8x4 ); |
| h->mb.cache.non_zero_count[x264_scan8[i4]] = array_non_zero_count( h->dct.luma4x4[i4] ); |
| block_residual_write_cavlc( h, &s, DCT_LUMA_4x4, i4, h->dct.luma4x4[i4], 16 ); |
| if( i_pixel != PIXEL_4x4 ) |
| { |
| i4 += 2-b_8x4; |
| h->mb.cache.non_zero_count[x264_scan8[i4]] = array_non_zero_count( h->dct.luma4x4[i4] ); |
| block_residual_write_cavlc( h, &s, DCT_LUMA_4x4, i4, h->dct.luma4x4[i4], 16 ); |
| } |
| |
| return s.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 x264_partition_i8x8_size_cavlc( x264_t *h, int i8, int i_mode ) |
| { |
| int i4; |
| h->out.bs.i_bits_encoded = cavlc_intra4x4_pred_size( h, 4*i8, i_mode ); |
| h->zigzagf.interleave_8x8_cavlc( h->dct.luma4x4[i8*4], h->dct.luma8x8[i8] ); |
| for( i4 = 0; i4 < 4; i4++ ) |
| { |
| h->mb.cache.non_zero_count[x264_scan8[i4+i8*4]] = array_non_zero_count( h->dct.luma4x4[i4+i8*4] ); |
| block_residual_write_cavlc( h, &h->out.bs, DCT_LUMA_4x4, i4+i8*4, h->dct.luma4x4[i4+i8*4], 16 ); |
| } |
| return h->out.bs.i_bits_encoded; |
| } |
| |
| static int x264_partition_i4x4_size_cavlc( x264_t *h, int i4, int i_mode ) |
| { |
| h->out.bs.i_bits_encoded = cavlc_intra4x4_pred_size( h, i4, i_mode ); |
| h->mb.cache.non_zero_count[x264_scan8[i4]] = array_non_zero_count( h->dct.luma4x4[i4] ); |
| block_residual_write_cavlc( h, &h->out.bs, DCT_LUMA_4x4, i4, h->dct.luma4x4[i4], 16 ); |
| return h->out.bs.i_bits_encoded; |
| } |
| |
| static int x264_i8x8_chroma_size_cavlc( x264_t *h ) |
| { |
| h->out.bs.i_bits_encoded = bs_size_ue( x264_mb_pred_mode8x8c_fix[ h->mb.i_chroma_pred_mode ] ); |
| if( h->mb.i_cbp_chroma ) |
| { |
| block_residual_write_cavlc( h, &h->out.bs, DCT_CHROMA_DC, 25, h->dct.chroma_dc[0], 4 ); |
| block_residual_write_cavlc( h, &h->out.bs, DCT_CHROMA_DC, 26, h->dct.chroma_dc[1], 4 ); |
| |
| if( h->mb.i_cbp_chroma == 2 ) |
| { |
| int i; |
| for( i = 16; i < 24; i++ ) |
| { |
| h->mb.cache.non_zero_count[x264_scan8[i]] = array_non_zero_count( h->dct.luma4x4[i] ); |
| block_residual_write_cavlc( h, &h->out.bs, DCT_CHROMA_AC, i, h->dct.luma4x4[i]+1, 15 ); |
| } |
| } |
| } |
| return h->out.bs.i_bits_encoded; |
| } |
| #endif |
