| /***************************************************************************** |
| * macroblock.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" |
| |
| /* These chroma DC functions don't have assembly versions and are only used here. */ |
| |
| #define ZIG(i,y,x) level[i] = dct[x][y]; |
| static inline void zigzag_scan_2x2_dc( int16_t level[4], int16_t dct[2][2] ) |
| { |
| ZIG(0,0,0) |
| ZIG(1,0,1) |
| ZIG(2,1,0) |
| ZIG(3,1,1) |
| } |
| #undef ZIG |
| |
| static inline void idct_dequant_2x2_dc( int16_t dct[2][2], int16_t dct4x4[4][4][4], int dequant_mf[6][4][4], int i_qp ) |
| { |
| int d0 = dct[0][0] + dct[0][1]; |
| int d1 = dct[1][0] + dct[1][1]; |
| int d2 = dct[0][0] - dct[0][1]; |
| int d3 = dct[1][0] - dct[1][1]; |
| int dmf = dequant_mf[i_qp%6][0][0]; |
| int qbits = i_qp/6 - 5; |
| if( qbits > 0 ) |
| { |
| dmf <<= qbits; |
| qbits = 0; |
| } |
| dct4x4[0][0][0] = (d0 + d1) * dmf >> -qbits; |
| dct4x4[1][0][0] = (d0 - d1) * dmf >> -qbits; |
| dct4x4[2][0][0] = (d2 + d3) * dmf >> -qbits; |
| dct4x4[3][0][0] = (d2 - d3) * dmf >> -qbits; |
| } |
| |
| static inline void dct2x2dc( int16_t d[2][2], int16_t dct4x4[4][4][4] ) |
| { |
| int d0 = dct4x4[0][0][0] + dct4x4[1][0][0]; |
| int d1 = dct4x4[2][0][0] + dct4x4[3][0][0]; |
| int d2 = dct4x4[0][0][0] - dct4x4[1][0][0]; |
| int d3 = dct4x4[2][0][0] - dct4x4[3][0][0]; |
| d[0][0] = d0 + d1; |
| d[1][0] = d2 + d3; |
| d[0][1] = d0 - d1; |
| d[1][1] = d2 - d3; |
| dct4x4[0][0][0] = 0; |
| dct4x4[1][0][0] = 0; |
| dct4x4[2][0][0] = 0; |
| dct4x4[3][0][0] = 0; |
| } |
| |
| static ALWAYS_INLINE void x264_quant_4x4( x264_t *h, int16_t dct[4][4], int i_qp, int i_ctxBlockCat, int b_intra, int idx ) |
| { |
| int i_quant_cat = b_intra ? CQM_4IY : CQM_4PY; |
| if( h->mb.b_trellis ) |
| x264_quant_4x4_trellis( h, dct, i_quant_cat, i_qp, i_ctxBlockCat, b_intra, idx ); |
| else |
| h->quantf.quant_4x4( dct, h->quant4_mf[i_quant_cat][i_qp], h->quant4_bias[i_quant_cat][i_qp] ); |
| } |
| |
| static ALWAYS_INLINE void x264_quant_8x8( x264_t *h, int16_t dct[8][8], int i_qp, int b_intra, int idx ) |
| { |
| int i_quant_cat = b_intra ? CQM_8IY : CQM_8PY; |
| if( h->mb.b_trellis ) |
| x264_quant_8x8_trellis( h, dct, i_quant_cat, i_qp, b_intra, idx ); |
| else |
| h->quantf.quant_8x8( dct, h->quant8_mf[i_quant_cat][i_qp], h->quant8_bias[i_quant_cat][i_qp] ); |
| } |
| |
| void x264_mb_encode_i4x4( x264_t *h, int idx, int i_qp ) |
| { |
| uint8_t *p_src = &h->mb.pic.p_fenc[0][block_idx_xy_fenc[idx]]; |
| uint8_t *p_dst = &h->mb.pic.p_fdec[0][block_idx_xy_fdec[idx]]; |
| DECLARE_ALIGNED_16( int16_t dct4x4[4][4] ); |
| |
| if( h->mb.b_lossless ) |
| { |
| h->zigzagf.sub_4x4( h->dct.luma4x4[idx], p_src, p_dst ); |
| return; |
| } |
| |
| h->dctf.sub4x4_dct( dct4x4, p_src, p_dst ); |
| |
| x264_quant_4x4( h, dct4x4, i_qp, DCT_LUMA_4x4, 1, idx ); |
| |
| if( array_non_zero( dct4x4 ) ) |
| { |
| h->zigzagf.scan_4x4( h->dct.luma4x4[idx], dct4x4 ); |
| h->quantf.dequant_4x4( dct4x4, h->dequant4_mf[CQM_4IY], i_qp ); |
| |
| /* output samples to fdec */ |
| h->dctf.add4x4_idct( p_dst, dct4x4 ); |
| } |
| else |
| memset( h->dct.luma4x4[idx], 0, sizeof(h->dct.luma4x4[idx])); |
| } |
| |
| void x264_mb_encode_i8x8( x264_t *h, int idx, int i_qp ) |
| { |
| int x = 8 * (idx&1); |
| int y = 8 * (idx>>1); |
| uint8_t *p_src = &h->mb.pic.p_fenc[0][x+y*FENC_STRIDE]; |
| uint8_t *p_dst = &h->mb.pic.p_fdec[0][x+y*FDEC_STRIDE]; |
| DECLARE_ALIGNED_16( int16_t dct8x8[8][8] ); |
| |
| if( h->mb.b_lossless ) |
| { |
| h->zigzagf.sub_8x8( h->dct.luma8x8[idx], p_src, p_dst ); |
| return; |
| } |
| |
| h->dctf.sub8x8_dct8( dct8x8, p_src, p_dst ); |
| |
| x264_quant_8x8( h, dct8x8, i_qp, 1, idx ); |
| |
| h->zigzagf.scan_8x8( h->dct.luma8x8[idx], dct8x8 ); |
| h->quantf.dequant_8x8( dct8x8, h->dequant8_mf[CQM_8IY], i_qp ); |
| h->dctf.add8x8_idct8( p_dst, dct8x8 ); |
| } |
| |
| static void x264_mb_encode_i16x16( x264_t *h, int i_qp ) |
| { |
| uint8_t *p_src = h->mb.pic.p_fenc[0]; |
| uint8_t *p_dst = h->mb.pic.p_fdec[0]; |
| |
| DECLARE_ALIGNED_16( int16_t dct4x4[16][4][4] ); |
| DECLARE_ALIGNED_16( int16_t dct_dc4x4[4][4] ); |
| |
| int i; |
| |
| if( h->mb.b_lossless ) |
| { |
| for( i = 0; i < 16; i++ ) |
| { |
| int oe = block_idx_xy_fenc[i]; |
| int od = block_idx_xy_fdec[i]; |
| h->zigzagf.sub_4x4( h->dct.luma4x4[i], p_src+oe, p_dst+od ); |
| dct_dc4x4[0][block_idx_yx_1d[i]] = h->dct.luma4x4[i][0]; |
| h->dct.luma4x4[i][0] = 0; |
| } |
| h->zigzagf.scan_4x4( h->dct.luma16x16_dc, dct_dc4x4 ); |
| return; |
| } |
| |
| h->dctf.sub16x16_dct( dct4x4, p_src, p_dst ); |
| for( i = 0; i < 16; i++ ) |
| { |
| /* copy dc coeff */ |
| dct_dc4x4[0][block_idx_xy_1d[i]] = dct4x4[i][0][0]; |
| dct4x4[i][0][0] = 0; |
| |
| /* quant/scan/dequant */ |
| x264_quant_4x4( h, dct4x4[i], i_qp, DCT_LUMA_AC, 1, i ); |
| |
| h->zigzagf.scan_4x4( h->dct.luma4x4[i], dct4x4[i] ); |
| h->quantf.dequant_4x4( dct4x4[i], h->dequant4_mf[CQM_4IY], i_qp ); |
| } |
| |
| h->dctf.dct4x4dc( dct_dc4x4 ); |
| if( h->mb.b_trellis ) |
| x264_quant_dc_trellis( h, (int16_t*)dct_dc4x4, CQM_4IY, i_qp, DCT_LUMA_DC, 1); |
| else |
| h->quantf.quant_4x4_dc( dct_dc4x4, h->quant4_mf[CQM_4IY][i_qp][0]>>1, h->quant4_bias[CQM_4IY][i_qp][0]<<1 ); |
| h->zigzagf.scan_4x4( h->dct.luma16x16_dc, dct_dc4x4 ); |
| |
| /* output samples to fdec */ |
| h->dctf.idct4x4dc( dct_dc4x4 ); |
| h->quantf.dequant_4x4_dc( dct_dc4x4, h->dequant4_mf[CQM_4IY], i_qp ); /* XXX not inversed */ |
| |
| /* calculate dct coeffs */ |
| for( i = 0; i < 16; i++ ) |
| { |
| /* copy dc coeff */ |
| dct4x4[i][0][0] = dct_dc4x4[0][block_idx_xy_1d[i]]; |
| } |
| /* put pixels to fdec */ |
| h->dctf.add16x16_idct( p_dst, dct4x4 ); |
| } |
| |
| void x264_mb_encode_8x8_chroma( x264_t *h, int b_inter, int i_qp ) |
| { |
| int i, ch; |
| int b_decimate = b_inter && (h->sh.i_type == SLICE_TYPE_B || h->param.analyse.b_dct_decimate); |
| |
| for( ch = 0; ch < 2; ch++ ) |
| { |
| uint8_t *p_src = h->mb.pic.p_fenc[1+ch]; |
| uint8_t *p_dst = h->mb.pic.p_fdec[1+ch]; |
| int i_decimate_score = 0; |
| |
| DECLARE_ALIGNED_16( int16_t dct2x2[2][2] ); |
| DECLARE_ALIGNED_16( int16_t dct4x4[4][4][4] ); |
| |
| if( h->mb.b_lossless ) |
| { |
| for( i = 0; i < 4; i++ ) |
| { |
| int oe = block_idx_x[i]*4 + block_idx_y[i]*4*FENC_STRIDE; |
| int od = block_idx_x[i]*4 + block_idx_y[i]*4*FDEC_STRIDE; |
| h->zigzagf.sub_4x4( h->dct.luma4x4[16+i+ch*4], p_src+oe, p_dst+od ); |
| h->dct.chroma_dc[ch][i] = h->dct.luma4x4[16+i+ch*4][0]; |
| h->dct.luma4x4[16+i+ch*4][0] = 0; |
| } |
| continue; |
| } |
| |
| h->dctf.sub8x8_dct( dct4x4, p_src, p_dst ); |
| dct2x2dc( dct2x2, dct4x4 ); |
| /* calculate dct coeffs */ |
| for( i = 0; i < 4; i++ ) |
| { |
| if( h->mb.b_trellis ) |
| x264_quant_4x4_trellis( h, dct4x4[i], CQM_4IC+b_inter, i_qp, DCT_CHROMA_AC, !b_inter, 0 ); |
| else |
| h->quantf.quant_4x4( dct4x4[i], h->quant4_mf[CQM_4IC+b_inter][i_qp], h->quant4_bias[CQM_4IC+b_inter][i_qp] ); |
| h->zigzagf.scan_4x4( h->dct.luma4x4[16+i+ch*4], dct4x4[i] ); |
| |
| if( b_decimate ) |
| i_decimate_score += h->quantf.decimate_score15( h->dct.luma4x4[16+i+ch*4] ); |
| } |
| |
| if( h->mb.b_trellis ) |
| x264_quant_dc_trellis( h, (int16_t*)dct2x2, CQM_4IC+b_inter, i_qp, DCT_CHROMA_DC, !b_inter ); |
| else |
| h->quantf.quant_2x2_dc( dct2x2, h->quant4_mf[CQM_4IC+b_inter][i_qp][0]>>1, h->quant4_bias[CQM_4IC+b_inter][i_qp][0]<<1 ); |
| |
| if( b_decimate && i_decimate_score < 7 ) |
| { |
| /* Near null chroma 8x8 block so make it null (bits saving) */ |
| memset( &h->dct.luma4x4[16+ch*4], 0, 4 * sizeof( *h->dct.luma4x4 ) ); |
| if( !array_non_zero( dct2x2 ) ) |
| { |
| memset( h->dct.chroma_dc[ch], 0, sizeof( h->dct.chroma_dc[ch] ) ); |
| continue; |
| } |
| memset( dct4x4, 0, sizeof( dct4x4 ) ); |
| } |
| else |
| { |
| for( i = 0; i < 4; i++ ) |
| h->quantf.dequant_4x4( dct4x4[i], h->dequant4_mf[CQM_4IC + b_inter], i_qp ); |
| } |
| |
| zigzag_scan_2x2_dc( h->dct.chroma_dc[ch], dct2x2 ); |
| idct_dequant_2x2_dc( dct2x2, dct4x4, h->dequant4_mf[CQM_4IC + b_inter], i_qp ); |
| h->dctf.add8x8_idct( p_dst, dct4x4 ); |
| } |
| |
| /* coded block pattern */ |
| h->mb.i_cbp_chroma = 0; |
| for( i = 0; i < 8; i++ ) |
| { |
| int nz = array_non_zero( h->dct.luma4x4[16+i] ); |
| h->mb.cache.non_zero_count[x264_scan8[16+i]] = nz; |
| h->mb.i_cbp_chroma |= nz; |
| } |
| h->mb.cache.non_zero_count[x264_scan8[25]] = array_non_zero( h->dct.chroma_dc[0] ); |
| h->mb.cache.non_zero_count[x264_scan8[26]] = array_non_zero( h->dct.chroma_dc[1] ); |
| if( h->mb.i_cbp_chroma ) |
| h->mb.i_cbp_chroma = 2; /* dc+ac (we can't do only ac) */ |
| else if( h->mb.cache.non_zero_count[x264_scan8[25]] | |
| h->mb.cache.non_zero_count[x264_scan8[26]] ) |
| h->mb.i_cbp_chroma = 1; /* dc only */ |
| } |
| |
| static void x264_macroblock_encode_skip( x264_t *h ) |
| { |
| h->mb.i_cbp_luma = 0x00; |
| h->mb.i_cbp_chroma = 0x00; |
| memset( h->mb.cache.non_zero_count, 0, X264_SCAN8_SIZE ); |
| /* store cbp */ |
| h->mb.cbp[h->mb.i_mb_xy] = 0; |
| } |
| |
| /***************************************************************************** |
| * x264_macroblock_encode_pskip: |
| * Encode an already marked skip block |
| *****************************************************************************/ |
| static void x264_macroblock_encode_pskip( x264_t *h ) |
| { |
| const int mvx = x264_clip3( h->mb.cache.mv[0][x264_scan8[0]][0], |
| h->mb.mv_min[0], h->mb.mv_max[0] ); |
| const int mvy = x264_clip3( h->mb.cache.mv[0][x264_scan8[0]][1], |
| h->mb.mv_min[1], h->mb.mv_max[1] ); |
| |
| /* don't do pskip motion compensation if it was already done in macroblock_analyse */ |
| if( !h->mb.b_skip_mc ) |
| { |
| h->mc.mc_luma( h->mb.pic.p_fdec[0], FDEC_STRIDE, |
| h->mb.pic.p_fref[0][0], h->mb.pic.i_stride[0], |
| mvx, mvy, 16, 16 ); |
| |
| h->mc.mc_chroma( h->mb.pic.p_fdec[1], FDEC_STRIDE, |
| h->mb.pic.p_fref[0][0][4], h->mb.pic.i_stride[1], |
| mvx, mvy, 8, 8 ); |
| |
| h->mc.mc_chroma( h->mb.pic.p_fdec[2], FDEC_STRIDE, |
| h->mb.pic.p_fref[0][0][5], h->mb.pic.i_stride[2], |
| mvx, mvy, 8, 8 ); |
| } |
| |
| x264_macroblock_encode_skip( h ); |
| } |
| |
| /***************************************************************************** |
| * Intra prediction for predictive lossless mode. |
| *****************************************************************************/ |
| |
| /* Note that these functions take a shortcut (mc.copy instead of actual pixel prediction) which assumes |
| * that the edge pixels of the reconstructed frame are the same as that of the source frame. This means |
| * they will only work correctly if the neighboring blocks are losslessly coded. In practice, this means |
| * lossless mode cannot be mixed with lossy mode within a frame. */ |
| /* This can be resolved by explicitly copying the edge pixels after doing the mc.copy, but this doesn't |
| * need to be done unless we decide to allow mixing lossless and lossy compression. */ |
| |
| void x264_predict_lossless_8x8_chroma( x264_t *h, int i_mode ) |
| { |
| int stride = h->fenc->i_stride[1] << h->mb.b_interlaced; |
| if( i_mode == I_PRED_CHROMA_V ) |
| { |
| h->mc.copy[PIXEL_8x8]( h->mb.pic.p_fdec[1], FDEC_STRIDE, h->mb.pic.p_fenc_plane[1]-stride, stride, 8 ); |
| h->mc.copy[PIXEL_8x8]( h->mb.pic.p_fdec[2], FDEC_STRIDE, h->mb.pic.p_fenc_plane[2]-stride, stride, 8 ); |
| } |
| else if( i_mode == I_PRED_CHROMA_H ) |
| { |
| h->mc.copy[PIXEL_8x8]( h->mb.pic.p_fdec[1], FDEC_STRIDE, h->mb.pic.p_fenc_plane[1]-1, stride, 8 ); |
| h->mc.copy[PIXEL_8x8]( h->mb.pic.p_fdec[2], FDEC_STRIDE, h->mb.pic.p_fenc_plane[2]-1, stride, 8 ); |
| } |
| else |
| { |
| h->predict_8x8c[i_mode]( h->mb.pic.p_fdec[1] ); |
| h->predict_8x8c[i_mode]( h->mb.pic.p_fdec[2] ); |
| } |
| } |
| |
| void x264_predict_lossless_4x4( x264_t *h, uint8_t *p_dst, int idx, int i_mode ) |
| { |
| int stride = h->fenc->i_stride[0] << h->mb.b_interlaced; |
| uint8_t *p_src = h->mb.pic.p_fenc_plane[0] + block_idx_x[idx]*4 + block_idx_y[idx]*4 * stride; |
| |
| if( i_mode == I_PRED_4x4_V ) |
| h->mc.copy[PIXEL_4x4]( p_dst, FDEC_STRIDE, p_src-stride, stride, 4 ); |
| else if( i_mode == I_PRED_4x4_H ) |
| h->mc.copy[PIXEL_4x4]( p_dst, FDEC_STRIDE, p_src-1, stride, 4 ); |
| else |
| h->predict_4x4[i_mode]( p_dst ); |
| } |
| |
| void x264_predict_lossless_8x8( x264_t *h, uint8_t *p_dst, int idx, int i_mode, uint8_t edge[33] ) |
| { |
| int stride = h->fenc->i_stride[0] << h->mb.b_interlaced; |
| uint8_t *p_src = h->mb.pic.p_fenc_plane[0] + (idx&1)*8 + (idx>>1)*8*stride; |
| |
| if( i_mode == I_PRED_8x8_V ) |
| h->mc.copy[PIXEL_8x8]( p_dst, FDEC_STRIDE, p_src-stride, stride, 8 ); |
| else if( i_mode == I_PRED_8x8_H ) |
| h->mc.copy[PIXEL_8x8]( p_dst, FDEC_STRIDE, p_src-1, stride, 8 ); |
| else |
| h->predict_8x8[i_mode]( p_dst, edge ); |
| } |
| |
| void x264_predict_lossless_16x16( x264_t *h, int i_mode ) |
| { |
| int stride = h->fenc->i_stride[0] << h->mb.b_interlaced; |
| if( i_mode == I_PRED_16x16_V ) |
| h->mc.copy[PIXEL_16x16]( h->mb.pic.p_fdec[0], FDEC_STRIDE, h->mb.pic.p_fenc_plane[0]-stride, stride, 16 ); |
| else if( i_mode == I_PRED_16x16_H ) |
| h->mc.copy_16x16_unaligned( h->mb.pic.p_fdec[0], FDEC_STRIDE, h->mb.pic.p_fenc_plane[0]-1, stride, 16 ); |
| else |
| h->predict_16x16[i_mode]( h->mb.pic.p_fdec[0] ); |
| } |
| |
| /***************************************************************************** |
| * x264_macroblock_encode: |
| *****************************************************************************/ |
| void x264_macroblock_encode( x264_t *h ) |
| { |
| int i_cbp_dc = 0; |
| int i_qp = h->mb.i_qp; |
| int b_decimate = h->sh.i_type == SLICE_TYPE_B || h->param.analyse.b_dct_decimate; |
| int b_force_no_skip = 0; |
| int i,j,idx; |
| uint8_t nnz8x8[4] = {1,1,1,1}; |
| |
| if( h->sh.b_mbaff |
| && h->mb.i_mb_xy == h->sh.i_first_mb + h->mb.i_mb_stride |
| && IS_SKIP(h->mb.type[h->sh.i_first_mb]) ) |
| { |
| /* The first skip is predicted to be a frame mb pair. |
| * We don't yet support the aff part of mbaff, so force it to non-skip |
| * so that we can pick the aff flag. */ |
| b_force_no_skip = 1; |
| if( IS_SKIP(h->mb.i_type) ) |
| { |
| if( h->mb.i_type == P_SKIP ) |
| h->mb.i_type = P_L0; |
| else if( h->mb.i_type == B_SKIP ) |
| h->mb.i_type = B_DIRECT; |
| } |
| } |
| |
| if( h->mb.i_type == P_SKIP ) |
| { |
| /* A bit special */ |
| x264_macroblock_encode_pskip( h ); |
| return; |
| } |
| if( h->mb.i_type == B_SKIP ) |
| { |
| /* don't do bskip motion compensation if it was already done in macroblock_analyse */ |
| if( !h->mb.b_skip_mc ) |
| x264_mb_mc( h ); |
| x264_macroblock_encode_skip( h ); |
| return; |
| } |
| |
| if( h->mb.i_type == I_16x16 ) |
| { |
| const int i_mode = h->mb.i_intra16x16_pred_mode; |
| h->mb.b_transform_8x8 = 0; |
| |
| if( h->mb.b_lossless ) |
| x264_predict_lossless_16x16( h, i_mode ); |
| else |
| h->predict_16x16[i_mode]( h->mb.pic.p_fdec[0] ); |
| |
| /* encode the 16x16 macroblock */ |
| x264_mb_encode_i16x16( h, i_qp ); |
| } |
| else if( h->mb.i_type == I_8x8 ) |
| { |
| DECLARE_ALIGNED_16( uint8_t edge[33] ); |
| h->mb.b_transform_8x8 = 1; |
| /* If we already encoded 3 of the 4 i8x8 blocks, we don't have to do them again. */ |
| if( h->mb.i_skip_intra ) |
| { |
| h->mc.copy[PIXEL_16x16]( h->mb.pic.p_fdec[0], FDEC_STRIDE, h->mb.pic.i8x8_fdec_buf, 16, 16 ); |
| /* In RD mode, restore the now-overwritten DCT data. */ |
| if( h->mb.i_skip_intra == 2 ) |
| h->mc.memcpy_aligned( h->dct.luma8x8, h->mb.pic.i8x8_dct_buf, sizeof(h->mb.pic.i8x8_dct_buf) ); |
| } |
| for( i = h->mb.i_skip_intra ? 3 : 0 ; i < 4; i++ ) |
| { |
| uint8_t *p_dst = &h->mb.pic.p_fdec[0][8 * (i&1) + 8 * (i>>1) * FDEC_STRIDE]; |
| int i_mode = h->mb.cache.intra4x4_pred_mode[x264_scan8[4*i]]; |
| x264_predict_8x8_filter( p_dst, edge, h->mb.i_neighbour8[i], x264_pred_i4x4_neighbors[i_mode] ); |
| |
| if( h->mb.b_lossless ) |
| x264_predict_lossless_8x8( h, p_dst, i, i_mode, edge ); |
| else |
| h->predict_8x8[i_mode]( p_dst, edge ); |
| |
| x264_mb_encode_i8x8( h, i, i_qp ); |
| } |
| for( i = 0; i < 4; i++ ) |
| nnz8x8[i] = array_non_zero( h->dct.luma8x8[i] ); |
| } |
| else if( h->mb.i_type == I_4x4 ) |
| { |
| h->mb.b_transform_8x8 = 0; |
| /* If we already encoded 15 of the 16 i4x4 blocks, we don't have to do them again. */ |
| if( h->mb.i_skip_intra ) |
| { |
| h->mc.copy[PIXEL_16x16]( h->mb.pic.p_fdec[0], FDEC_STRIDE, h->mb.pic.i4x4_fdec_buf, 16, 16 ); |
| /* In RD mode, restore the now-overwritten DCT data. */ |
| if( h->mb.i_skip_intra == 2 ) |
| h->mc.memcpy_aligned( h->dct.luma4x4, h->mb.pic.i4x4_dct_buf, sizeof(h->mb.pic.i4x4_dct_buf) ); |
| } |
| for( i = h->mb.i_skip_intra ? 15 : 0 ; i < 16; i++ ) |
| { |
| uint8_t *p_dst = &h->mb.pic.p_fdec[0][block_idx_xy_fdec[i]]; |
| int i_mode = h->mb.cache.intra4x4_pred_mode[x264_scan8[i]]; |
| |
| if( (h->mb.i_neighbour4[i] & (MB_TOPRIGHT|MB_TOP)) == MB_TOP ) |
| /* emulate missing topright samples */ |
| *(uint32_t*) &p_dst[4-FDEC_STRIDE] = p_dst[3-FDEC_STRIDE] * 0x01010101U; |
| |
| if( h->mb.b_lossless ) |
| x264_predict_lossless_4x4( h, p_dst, i, i_mode ); |
| else |
| h->predict_4x4[i_mode]( p_dst ); |
| x264_mb_encode_i4x4( h, i, i_qp ); |
| } |
| } |
| else /* Inter MB */ |
| { |
| int i8x8, i4x4; |
| int i_decimate_mb = 0; |
| |
| /* Don't repeat motion compensation if it was already done in non-RD transform analysis */ |
| if( !h->mb.b_skip_mc ) |
| x264_mb_mc( h ); |
| |
| if( h->mb.b_lossless ) |
| { |
| if( h->mb.b_transform_8x8 ) |
| for( i8x8 = 0; i8x8 < 4; i8x8++ ) |
| { |
| int x = 8*(i8x8&1); |
| int y = 8*(i8x8>>1); |
| h->zigzagf.sub_8x8( h->dct.luma8x8[i8x8], |
| h->mb.pic.p_fenc[0]+x+y*FENC_STRIDE, |
| h->mb.pic.p_fdec[0]+x+y*FDEC_STRIDE ); |
| nnz8x8[i8x8] = array_non_zero( h->dct.luma8x8[i8x8] ); |
| } |
| else |
| for( i4x4 = 0; i4x4 < 16; i4x4++ ) |
| { |
| h->zigzagf.sub_4x4( h->dct.luma4x4[i4x4], |
| h->mb.pic.p_fenc[0]+block_idx_xy_fenc[i4x4], |
| h->mb.pic.p_fdec[0]+block_idx_xy_fdec[i4x4] ); |
| } |
| } |
| else if( h->mb.b_transform_8x8 ) |
| { |
| DECLARE_ALIGNED_16( int16_t dct8x8[4][8][8] ); |
| b_decimate &= !h->mb.b_trellis; // 8x8 trellis is inherently optimal decimation |
| h->dctf.sub16x16_dct8( dct8x8, h->mb.pic.p_fenc[0], h->mb.pic.p_fdec[0] ); |
| h->nr_count[1] += h->mb.b_noise_reduction * 4; |
| |
| for( idx = 0; idx < 4; idx++ ) |
| { |
| if( h->mb.b_noise_reduction ) |
| h->quantf.denoise_dct( *dct8x8[idx], h->nr_residual_sum[1], h->nr_offset[1], 64 ); |
| x264_quant_8x8( h, dct8x8[idx], i_qp, 0, idx ); |
| |
| h->zigzagf.scan_8x8( h->dct.luma8x8[idx], dct8x8[idx] ); |
| |
| if( b_decimate ) |
| { |
| int i_decimate_8x8 = h->quantf.decimate_score64( h->dct.luma8x8[idx] ); |
| i_decimate_mb += i_decimate_8x8; |
| if( i_decimate_8x8 < 4 ) |
| nnz8x8[idx] = 0; |
| } |
| else |
| nnz8x8[idx] = array_non_zero( dct8x8[idx] ); |
| } |
| |
| if( i_decimate_mb < 6 && b_decimate ) |
| *(uint32_t*)nnz8x8 = 0; |
| else |
| { |
| for( idx = 0; idx < 4; idx++ ) |
| if( nnz8x8[idx] ) |
| { |
| h->quantf.dequant_8x8( dct8x8[idx], h->dequant8_mf[CQM_8PY], i_qp ); |
| h->dctf.add8x8_idct8( &h->mb.pic.p_fdec[0][(idx&1)*8 + (idx>>1)*8*FDEC_STRIDE], dct8x8[idx] ); |
| } |
| } |
| } |
| else |
| { |
| DECLARE_ALIGNED_16( int16_t dct4x4[16][4][4] ); |
| h->dctf.sub16x16_dct( dct4x4, h->mb.pic.p_fenc[0], h->mb.pic.p_fdec[0] ); |
| h->nr_count[0] += h->mb.b_noise_reduction * 16; |
| |
| for( i8x8 = 0; i8x8 < 4; i8x8++ ) |
| { |
| int i_decimate_8x8; |
| |
| /* encode one 4x4 block */ |
| i_decimate_8x8 = 0; |
| for( i4x4 = 0; i4x4 < 4; i4x4++ ) |
| { |
| idx = i8x8 * 4 + i4x4; |
| |
| if( h->mb.b_noise_reduction ) |
| h->quantf.denoise_dct( *dct4x4[idx], h->nr_residual_sum[0], h->nr_offset[0], 16 ); |
| x264_quant_4x4( h, dct4x4[idx], i_qp, DCT_LUMA_4x4, 0, idx ); |
| |
| h->zigzagf.scan_4x4( h->dct.luma4x4[idx], dct4x4[idx] ); |
| |
| if( b_decimate && i_decimate_8x8 <= 6 ) |
| i_decimate_8x8 += h->quantf.decimate_score16( h->dct.luma4x4[idx] ); |
| } |
| |
| /* decimate this 8x8 block */ |
| i_decimate_mb += i_decimate_8x8; |
| if( i_decimate_8x8 < 4 && b_decimate ) |
| nnz8x8[i8x8] = 0; |
| } |
| |
| if( i_decimate_mb < 6 && b_decimate ) |
| *(uint32_t*)nnz8x8 = 0; |
| else |
| { |
| for( i8x8 = 0; i8x8 < 4; i8x8++ ) |
| if( nnz8x8[i8x8] ) |
| { |
| for( i = 0; i < 4; i++ ) |
| h->quantf.dequant_4x4( dct4x4[i8x8*4+i], h->dequant4_mf[CQM_4PY], i_qp ); |
| h->dctf.add8x8_idct( &h->mb.pic.p_fdec[0][(i8x8&1)*8 + (i8x8>>1)*8*FDEC_STRIDE], &dct4x4[i8x8*4] ); |
| } |
| } |
| } |
| } |
| |
| /* encode chroma */ |
| if( IS_INTRA( h->mb.i_type ) ) |
| { |
| const int i_mode = h->mb.i_chroma_pred_mode; |
| if( h->mb.b_lossless ) |
| x264_predict_lossless_8x8_chroma( h, i_mode ); |
| else |
| { |
| h->predict_8x8c[i_mode]( h->mb.pic.p_fdec[1] ); |
| h->predict_8x8c[i_mode]( h->mb.pic.p_fdec[2] ); |
| } |
| } |
| |
| /* encode the 8x8 blocks */ |
| x264_mb_encode_8x8_chroma( h, !IS_INTRA( h->mb.i_type ), h->mb.i_chroma_qp ); |
| |
| /* coded block pattern and non_zero_count */ |
| h->mb.i_cbp_luma = 0x00; |
| if( h->mb.i_type == I_16x16 ) |
| { |
| for( i = 0; i < 16; i++ ) |
| { |
| int nz = array_non_zero( h->dct.luma4x4[i] ); |
| h->mb.cache.non_zero_count[x264_scan8[i]] = nz; |
| h->mb.i_cbp_luma |= nz; |
| } |
| h->mb.i_cbp_luma *= 0xf; |
| h->mb.cache.non_zero_count[x264_scan8[24]] = array_non_zero( h->dct.luma16x16_dc ); |
| } |
| else |
| { |
| for( i = 0; i < 4; i++) |
| { |
| if(!nnz8x8[i]) |
| { |
| *(uint16_t*)&h->mb.cache.non_zero_count[x264_scan8[0+i*4]] = 0; |
| *(uint16_t*)&h->mb.cache.non_zero_count[x264_scan8[2+i*4]] = 0; |
| } |
| else if( h->mb.b_transform_8x8 ) |
| { |
| *(uint16_t*)&h->mb.cache.non_zero_count[x264_scan8[0+4*i]] = nnz8x8[i] * 0x0101; |
| *(uint16_t*)&h->mb.cache.non_zero_count[x264_scan8[2+4*i]] = nnz8x8[i] * 0x0101; |
| h->mb.i_cbp_luma |= nnz8x8[i] << i; |
| } |
| else |
| { |
| int nz, cbp = 0; |
| for( j = 0; j < 4; j++ ) |
| { |
| nz = array_non_zero( h->dct.luma4x4[j+4*i] ); |
| h->mb.cache.non_zero_count[x264_scan8[j+4*i]] = nz; |
| cbp |= nz; |
| } |
| h->mb.i_cbp_luma |= cbp << i; |
| } |
| } |
| h->mb.cache.non_zero_count[x264_scan8[24]] = 0; |
| } |
| |
| if( h->param.b_cabac ) |
| { |
| i_cbp_dc = h->mb.cache.non_zero_count[x264_scan8[24]] |
| | h->mb.cache.non_zero_count[x264_scan8[25]] << 1 |
| | h->mb.cache.non_zero_count[x264_scan8[26]] << 2; |
| } |
| |
| /* store cbp */ |
| h->mb.cbp[h->mb.i_mb_xy] = (i_cbp_dc << 8) | (h->mb.i_cbp_chroma << 4) | h->mb.i_cbp_luma; |
| |
| /* Check for P_SKIP |
| * XXX: in the me perhaps we should take x264_mb_predict_mv_pskip into account |
| * (if multiple mv give same result)*/ |
| if( !b_force_no_skip ) |
| { |
| if( h->mb.i_type == P_L0 && h->mb.i_partition == D_16x16 && |
| !(h->mb.i_cbp_luma | h->mb.i_cbp_chroma) && |
| *(uint32_t*)h->mb.cache.mv[0][x264_scan8[0]] == *(uint32_t*)h->mb.cache.pskip_mv |
| && h->mb.cache.ref[0][x264_scan8[0]] == 0 ) |
| { |
| h->mb.i_type = P_SKIP; |
| } |
| |
| /* Check for B_SKIP */ |
| if( h->mb.i_type == B_DIRECT && !(h->mb.i_cbp_luma | h->mb.i_cbp_chroma) ) |
| { |
| h->mb.i_type = B_SKIP; |
| } |
| } |
| } |
| |
| /***************************************************************************** |
| * x264_macroblock_probe_skip: |
| * Check if the current MB could be encoded as a [PB]_SKIP (it supposes you use |
| * the previous QP |
| *****************************************************************************/ |
| int x264_macroblock_probe_skip( x264_t *h, int b_bidir ) |
| { |
| DECLARE_ALIGNED_16( int16_t dct4x4[4][4][4] ); |
| DECLARE_ALIGNED_16( int16_t dct2x2[2][2] ); |
| DECLARE_ALIGNED_16( int16_t dctscan[16] ); |
| |
| int i_qp = h->mb.i_qp; |
| int mvp[2]; |
| int ch, thresh; |
| |
| int i8x8, i4x4; |
| int i_decimate_mb; |
| |
| if( !b_bidir ) |
| { |
| /* Get the MV */ |
| mvp[0] = x264_clip3( h->mb.cache.pskip_mv[0], h->mb.mv_min[0], h->mb.mv_max[0] ); |
| mvp[1] = x264_clip3( h->mb.cache.pskip_mv[1], h->mb.mv_min[1], h->mb.mv_max[1] ); |
| |
| /* Motion compensation */ |
| h->mc.mc_luma( h->mb.pic.p_fdec[0], FDEC_STRIDE, |
| h->mb.pic.p_fref[0][0], h->mb.pic.i_stride[0], |
| mvp[0], mvp[1], 16, 16 ); |
| } |
| |
| for( i8x8 = 0, i_decimate_mb = 0; i8x8 < 4; i8x8++ ) |
| { |
| int fenc_offset = (i8x8&1) * 8 + (i8x8>>1) * FENC_STRIDE * 8; |
| int fdec_offset = (i8x8&1) * 8 + (i8x8>>1) * FDEC_STRIDE * 8; |
| /* get luma diff */ |
| h->dctf.sub8x8_dct( dct4x4, h->mb.pic.p_fenc[0] + fenc_offset, |
| h->mb.pic.p_fdec[0] + fdec_offset ); |
| /* encode one 4x4 block */ |
| for( i4x4 = 0; i4x4 < 4; i4x4++ ) |
| { |
| h->quantf.quant_4x4( dct4x4[i4x4], h->quant4_mf[CQM_4PY][i_qp], h->quant4_bias[CQM_4PY][i_qp] ); |
| if( !array_non_zero(dct4x4[i4x4]) ) |
| continue; |
| h->zigzagf.scan_4x4( dctscan, dct4x4[i4x4] ); |
| i_decimate_mb += h->quantf.decimate_score16( dctscan ); |
| if( i_decimate_mb >= 6 ) |
| return 0; |
| } |
| } |
| |
| /* encode chroma */ |
| i_qp = h->mb.i_chroma_qp; |
| thresh = (x264_lambda2_tab[i_qp] + 32) >> 6; |
| |
| for( ch = 0; ch < 2; ch++ ) |
| { |
| uint8_t *p_src = h->mb.pic.p_fenc[1+ch]; |
| uint8_t *p_dst = h->mb.pic.p_fdec[1+ch]; |
| |
| if( !b_bidir ) |
| { |
| h->mc.mc_chroma( h->mb.pic.p_fdec[1+ch], FDEC_STRIDE, |
| h->mb.pic.p_fref[0][0][4+ch], h->mb.pic.i_stride[1+ch], |
| mvp[0], mvp[1], 8, 8 ); |
| } |
| |
| /* there is almost never a termination during chroma, but we can't avoid the check entirely */ |
| /* so instead we check SSD and skip the actual check if the score is low enough. */ |
| if( h->pixf.ssd[PIXEL_8x8]( p_dst, FDEC_STRIDE, p_src, FENC_STRIDE ) < thresh ) |
| continue; |
| |
| h->dctf.sub8x8_dct( dct4x4, p_src, p_dst ); |
| |
| /* calculate dct DC */ |
| dct2x2dc( dct2x2, dct4x4 ); |
| h->quantf.quant_2x2_dc( dct2x2, h->quant4_mf[CQM_4PC][i_qp][0]>>1, h->quant4_bias[CQM_4PC][i_qp][0]<<1 ); |
| if( array_non_zero(dct2x2) ) |
| return 0; |
| |
| /* calculate dct coeffs */ |
| for( i4x4 = 0, i_decimate_mb = 0; i4x4 < 4; i4x4++ ) |
| { |
| h->quantf.quant_4x4( dct4x4[i4x4], h->quant4_mf[CQM_4PC][i_qp], h->quant4_bias[CQM_4PC][i_qp] ); |
| if( !array_non_zero(dct4x4[i4x4]) ) |
| continue; |
| h->zigzagf.scan_4x4( dctscan, dct4x4[i4x4] ); |
| i_decimate_mb += h->quantf.decimate_score15( dctscan ); |
| if( i_decimate_mb >= 7 ) |
| return 0; |
| } |
| } |
| |
| h->mb.b_skip_mc = 1; |
| return 1; |
| } |
| |
| /**************************************************************************** |
| * DCT-domain noise reduction / adaptive deadzone |
| * from libavcodec |
| ****************************************************************************/ |
| |
| void x264_noise_reduction_update( x264_t *h ) |
| { |
| int cat, i; |
| for( cat = 0; cat < 2; cat++ ) |
| { |
| int size = cat ? 64 : 16; |
| const uint16_t *weight = cat ? x264_dct8_weight2_tab : x264_dct4_weight2_tab; |
| |
| if( h->nr_count[cat] > (cat ? (1<<16) : (1<<18)) ) |
| { |
| for( i = 0; i < size; i++ ) |
| h->nr_residual_sum[cat][i] >>= 1; |
| h->nr_count[cat] >>= 1; |
| } |
| |
| for( i = 0; i < size; i++ ) |
| h->nr_offset[cat][i] = |
| ((uint64_t)h->param.analyse.i_noise_reduction * h->nr_count[cat] |
| + h->nr_residual_sum[cat][i]/2) |
| / ((uint64_t)h->nr_residual_sum[cat][i] * weight[i]/256 + 1); |
| } |
| } |
| |
| /***************************************************************************** |
| * RD only; 4 calls to this do not make up for one macroblock_encode. |
| * doesn't transform chroma dc. |
| *****************************************************************************/ |
| void x264_macroblock_encode_p8x8( x264_t *h, int i8 ) |
| { |
| int i_qp = h->mb.i_qp; |
| uint8_t *p_fenc = h->mb.pic.p_fenc[0] + (i8&1)*8 + (i8>>1)*8*FENC_STRIDE; |
| uint8_t *p_fdec = h->mb.pic.p_fdec[0] + (i8&1)*8 + (i8>>1)*8*FDEC_STRIDE; |
| int b_decimate = h->sh.i_type == SLICE_TYPE_B || h->param.analyse.b_dct_decimate; |
| int nnz8x8 = 0; |
| int ch; |
| |
| x264_mb_mc_8x8( h, i8 ); |
| |
| if( h->mb.b_lossless ) |
| { |
| int i4; |
| if( h->mb.b_transform_8x8 ) |
| { |
| h->zigzagf.sub_8x8( h->dct.luma8x8[i8], p_fenc, p_fdec ); |
| nnz8x8 = array_non_zero( h->dct.luma8x8[i8] ); |
| } |
| else |
| { |
| for( i4 = i8*4; i4 < i8*4+4; i4++ ) |
| { |
| h->zigzagf.sub_4x4( h->dct.luma4x4[i4], |
| h->mb.pic.p_fenc[0]+block_idx_xy_fenc[i4], |
| h->mb.pic.p_fdec[0]+block_idx_xy_fdec[i4] ); |
| nnz8x8 |= array_non_zero( h->dct.luma4x4[i4] ); |
| } |
| } |
| for( ch = 0; ch < 2; ch++ ) |
| { |
| p_fenc = h->mb.pic.p_fenc[1+ch] + (i8&1)*4 + (i8>>1)*4*FENC_STRIDE; |
| p_fdec = h->mb.pic.p_fdec[1+ch] + (i8&1)*4 + (i8>>1)*4*FDEC_STRIDE; |
| h->zigzagf.sub_4x4( h->dct.luma4x4[16+i8+ch*4], p_fenc, p_fdec ); |
| h->dct.luma4x4[16+i8+ch*4][0] = 0; |
| } |
| } |
| else |
| { |
| if( h->mb.b_transform_8x8 ) |
| { |
| DECLARE_ALIGNED_16( int16_t dct8x8[8][8] ); |
| h->dctf.sub8x8_dct8( dct8x8, p_fenc, p_fdec ); |
| x264_quant_8x8( h, dct8x8, i_qp, 0, i8 ); |
| h->zigzagf.scan_8x8( h->dct.luma8x8[i8], dct8x8 ); |
| |
| if( b_decimate && !h->mb.b_trellis ) |
| nnz8x8 = 4 <= h->quantf.decimate_score64( h->dct.luma8x8[i8] ); |
| else |
| nnz8x8 = array_non_zero( dct8x8 ); |
| |
| if( nnz8x8 ) |
| { |
| h->quantf.dequant_8x8( dct8x8, h->dequant8_mf[CQM_8PY], i_qp ); |
| h->dctf.add8x8_idct8( p_fdec, dct8x8 ); |
| } |
| } |
| else |
| { |
| int i4; |
| DECLARE_ALIGNED_16( int16_t dct4x4[4][4][4] ); |
| h->dctf.sub8x8_dct( dct4x4, p_fenc, p_fdec ); |
| for( i4 = 0; i4 < 4; i4++ ) |
| x264_quant_4x4( h, dct4x4[i4], i_qp, DCT_LUMA_4x4, 0, i8*4+i4 ); |
| |
| for( i4 = 0; i4 < 4; i4++ ) |
| h->zigzagf.scan_4x4( h->dct.luma4x4[i8*4+i4], dct4x4[i4] ); |
| |
| if( b_decimate ) |
| { |
| int i_decimate_8x8 = 0; |
| for( i4 = 0; i4 < 4 && i_decimate_8x8 < 4; i4++ ) |
| i_decimate_8x8 += h->quantf.decimate_score16( h->dct.luma4x4[i8*4+i4] ); |
| nnz8x8 = 4 <= i_decimate_8x8; |
| } |
| else |
| nnz8x8 = array_non_zero( dct4x4 ); |
| |
| if( nnz8x8 ) |
| { |
| for( i4 = 0; i4 < 4; i4++ ) |
| h->quantf.dequant_4x4( dct4x4[i4], h->dequant4_mf[CQM_4PY], i_qp ); |
| h->dctf.add8x8_idct( p_fdec, dct4x4 ); |
| } |
| } |
| |
| i_qp = h->mb.i_chroma_qp; |
| |
| for( ch = 0; ch < 2; ch++ ) |
| { |
| DECLARE_ALIGNED_16( int16_t dct4x4[4][4] ); |
| p_fenc = h->mb.pic.p_fenc[1+ch] + (i8&1)*4 + (i8>>1)*4*FENC_STRIDE; |
| p_fdec = h->mb.pic.p_fdec[1+ch] + (i8&1)*4 + (i8>>1)*4*FDEC_STRIDE; |
| |
| h->dctf.sub4x4_dct( dct4x4, p_fenc, p_fdec ); |
| dct4x4[0][0] = 0; |
| |
| if( h->mb.b_trellis ) |
| x264_quant_4x4_trellis( h, dct4x4, CQM_4PC, i_qp, DCT_CHROMA_AC, 0, 0 ); |
| else |
| h->quantf.quant_4x4( dct4x4, h->quant4_mf[CQM_4PC][i_qp], h->quant4_bias[CQM_4PC][i_qp] ); |
| |
| h->zigzagf.scan_4x4( h->dct.luma4x4[16+i8+ch*4], dct4x4 ); |
| if( array_non_zero( dct4x4 ) ) |
| { |
| h->quantf.dequant_4x4( dct4x4, h->dequant4_mf[CQM_4PC], i_qp ); |
| h->dctf.add4x4_idct( p_fdec, dct4x4 ); |
| } |
| } |
| } |
| h->mb.i_cbp_luma &= ~(1 << i8); |
| h->mb.i_cbp_luma |= nnz8x8 << i8; |
| h->mb.i_cbp_chroma = 0x02; |
| } |
| |
| /***************************************************************************** |
| * RD only, luma only |
| *****************************************************************************/ |
| void x264_macroblock_encode_p4x4( x264_t *h, int i4 ) |
| { |
| int i_qp = h->mb.i_qp; |
| uint8_t *p_fenc = &h->mb.pic.p_fenc[0][block_idx_xy_fenc[i4]]; |
| uint8_t *p_fdec = &h->mb.pic.p_fdec[0][block_idx_xy_fdec[i4]]; |
| const int i_ref = h->mb.cache.ref[0][x264_scan8[i4]]; |
| const int mvx = x264_clip3( h->mb.cache.mv[0][x264_scan8[i4]][0], h->mb.mv_min[0], h->mb.mv_max[0] ); |
| const int mvy = x264_clip3( h->mb.cache.mv[0][x264_scan8[i4]][1], h->mb.mv_min[1], h->mb.mv_max[1] ); |
| |
| h->mc.mc_luma( p_fdec, FDEC_STRIDE, h->mb.pic.p_fref[0][i_ref], h->mb.pic.i_stride[0], mvx + 4*4*block_idx_x[i4], mvy + 4*4*block_idx_y[i4], 4, 4 ); |
| |
| if( h->mb.b_lossless ) |
| h->zigzagf.sub_4x4( h->dct.luma4x4[i4], p_fenc, p_fdec ); |
| else |
| { |
| DECLARE_ALIGNED_16( int16_t dct4x4[4][4] ); |
| h->dctf.sub4x4_dct( dct4x4, p_fenc, p_fdec ); |
| x264_quant_4x4( h, dct4x4, i_qp, DCT_LUMA_4x4, 0, i4 ); |
| h->zigzagf.scan_4x4( h->dct.luma4x4[i4], dct4x4 ); |
| if( array_non_zero( dct4x4 ) ) |
| { |
| h->quantf.dequant_4x4( dct4x4, h->dequant4_mf[CQM_4PY], i_qp ); |
| h->dctf.add4x4_idct( p_fdec, dct4x4 ); |
| } |
| } |
| } |
