904 lines
31 KiB
C
904 lines
31 KiB
C
/*****************************************************************************
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* macroblock.c: h264 encoder library
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*****************************************************************************
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* Copyright (C) 2003 Laurent Aimar
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* $Id: macroblock.c,v 1.1 2004/06/03 19:27:08 fenrir Exp $
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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*
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* This program is CC_free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include "common/common.h"
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#include "macroblock.h"
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/* def_quant4_mf only for probe_skip; actual encoding uses matrices from set.c */
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/* FIXME this seems to make better decisions with cqm=jvt, but could screw up
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* with general custom matrices. */
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static const int def_quant4_mf[6][4][4] =
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{
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{ { 13107, 8066, 13107, 8066 }, { 8066, 5243, 8066, 5243 },
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{ 13107, 8066, 13107, 8066 }, { 8066, 5243, 8066, 5243 } },
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{ { 11916, 7490, 11916, 7490 }, { 7490, 4660, 7490, 4660 },
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{ 11916, 7490, 11916, 7490 }, { 7490, 4660, 7490, 4660 } },
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{ { 10082, 6554, 10082, 6554 }, { 6554, 4194, 6554, 4194 },
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{ 10082, 6554, 10082, 6554 }, { 6554, 4194, 6554, 4194 } },
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{ { 9362, 5825, 9362, 5825 }, { 5825, 3647, 5825, 3647 },
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{ 9362, 5825, 9362, 5825 }, { 5825, 3647, 5825, 3647 } },
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{ { 8192, 5243, 8192, 5243 }, { 5243, 3355, 5243, 3355 },
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{ 8192, 5243, 8192, 5243 }, { 5243, 3355, 5243, 3355 } },
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{ { 7282, 4559, 7282, 4559 }, { 4559, 2893, 4559, 2893 },
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{ 7282, 4559, 7282, 4559 }, { 4559, 2893, 4559, 2893 } }
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};
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#define ZIG(i,y,x) level[i] = dct[x][y];
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static inline void zigzag_scan_2x2_dc( int level[4], int16_t dct[2][2] )
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{
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ZIG(0,0,0)
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ZIG(1,0,1)
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ZIG(2,1,0)
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ZIG(3,1,1)
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}
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#undef ZIG
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static void quant_8x8( x264_t *h, int16_t dct[8][8], int quant_mf[6][8][8], int i_qscale, int b_intra )
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{
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const int i_qbits = 16 + i_qscale / 6;
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const int i_mf = i_qscale % 6;
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const int f = h->mb.i_luma_deadzone[b_intra] << (i_qbits-6);
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h->quantf.quant_8x8_core( dct, quant_mf[i_mf], i_qbits, f );
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}
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static void quant_4x4( x264_t *h, int16_t dct[4][4], int quant_mf[6][4][4], int i_qscale, int b_intra )
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{
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const int i_qbits = 15 + i_qscale / 6;
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const int i_mf = i_qscale % 6;
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const int f = h->mb.i_luma_deadzone[b_intra] << (i_qbits-6);
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h->quantf.quant_4x4_core( dct, quant_mf[i_mf], i_qbits, f );
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}
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static void quant_4x4_chroma( x264_t *h, int16_t dct[4][4], int quant_mf[6][4][4], int i_qscale, int b_intra )
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{
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const int i_qbits = 15 + i_qscale / 6;
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const int i_mf = i_qscale % 6;
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const int f = ( 1 << (i_qbits + b_intra) ) / 6;
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h->quantf.quant_4x4_core( dct, quant_mf[i_mf], i_qbits, f );
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}
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static void quant_4x4_dc( x264_t *h, int16_t dct[4][4], int quant_mf[6][4][4], int i_qscale )
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{
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const int i_qbits = 16 + i_qscale / 6;
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const int i_mf = i_qscale % 6;
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const int f = h->mb.i_luma_deadzone[1] << (i_qbits-6);
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h->quantf.quant_4x4_dc_core( dct, quant_mf[i_mf][0][0], i_qbits, f );
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}
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static void quant_2x2_dc( x264_t *h, int16_t dct[2][2], int quant_mf[6][4][4], int i_qscale, int b_intra )
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{
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const int i_qbits = 16 + i_qscale / 6;
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const int i_mf = i_qscale % 6;
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const int f = ( 1 << (i_qbits + b_intra) ) / 6;
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h->quantf.quant_2x2_dc_core( dct, quant_mf[i_mf][0][0], i_qbits, f );
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}
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/* (ref: JVT-B118)
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* x264_mb_decimate_score: given dct coeffs it returns a score to see if we could empty this dct coeffs
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* to 0 (low score means set it to null)
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* Used in inter macroblock (luma and chroma)
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* luma: for a 8x8 block: if score < 4 -> null
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* for the complete mb: if score < 6 -> null
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* chroma: for the complete mb: if score < 7 -> null
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*/
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static int x264_mb_decimate_score( int *dct, int i_max )
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{
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static const int i_ds_table4[16] = {
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3,2,2,1,1,1,0,0,0,0,0,0,0,0,0,0 };
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static const int i_ds_table8[64] = {
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3,3,3,3,2,2,2,2,2,2,2,2,1,1,1,1,
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1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
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const int *ds_table = (i_max == 64) ? i_ds_table8 : i_ds_table4;
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int i_score = 0;
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int idx = i_max - 1;
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while( idx >= 0 && dct[idx] == 0 )
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idx--;
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while( idx >= 0 )
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{
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int i_run;
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if( abs( dct[idx--] ) > 1 )
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return 9;
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i_run = 0;
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while( idx >= 0 && dct[idx] == 0 )
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{
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idx--;
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i_run++;
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}
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i_score += ds_table[i_run];
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}
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return i_score;
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}
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void x264_mb_encode_i4x4( x264_t *h, int idx, int i_qscale )
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{
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int x = 4 * block_idx_x[idx];
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int y = 4 * block_idx_y[idx];
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uint8_t *p_src = &h->mb.pic.p_fenc[0][x+y*FENC_STRIDE];
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uint8_t *p_dst = &h->mb.pic.p_fdec[0][x+y*FDEC_STRIDE];
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int16_t dct4x4[4][4];
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if( h->mb.b_lossless )
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{
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h->zigzagf.sub_4x4( h->dct.block[idx].luma4x4, p_src, p_dst );
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return;
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}
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h->dctf.sub4x4_dct( dct4x4, p_src, p_dst );
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if( h->mb.b_trellis )
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x264_quant_4x4_trellis( h, dct4x4, CQM_4IY, i_qscale, DCT_LUMA_4x4, 1 );
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else
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quant_4x4( h, dct4x4, h->quant4_mf[CQM_4IY], i_qscale, 1 );
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h->zigzagf.scan_4x4( h->dct.block[idx].luma4x4, dct4x4 );
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h->quantf.dequant_4x4( dct4x4, h->dequant4_mf[CQM_4IY], i_qscale );
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/* output samples to fdec */
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h->dctf.add4x4_idct( p_dst, dct4x4 );
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}
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void x264_mb_encode_i8x8( x264_t *h, int idx, int i_qscale )
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{
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int x = 8 * (idx&1);
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int y = 8 * (idx>>1);
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uint8_t *p_src = &h->mb.pic.p_fenc[0][x+y*FENC_STRIDE];
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uint8_t *p_dst = &h->mb.pic.p_fdec[0][x+y*FDEC_STRIDE];
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int16_t dct8x8[8][8];
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h->dctf.sub8x8_dct8( dct8x8, p_src, p_dst );
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if( h->mb.b_trellis )
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x264_quant_8x8_trellis( h, dct8x8, CQM_8IY, i_qscale, 1 );
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else
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quant_8x8( h, dct8x8, h->quant8_mf[CQM_8IY], i_qscale, 1 );
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h->zigzagf.scan_8x8( h->dct.luma8x8[idx], dct8x8 );
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h->quantf.dequant_8x8( dct8x8, h->dequant8_mf[CQM_8IY], i_qscale );
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h->dctf.add8x8_idct8( p_dst, dct8x8 );
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}
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static void x264_mb_encode_i16x16( x264_t *h, int i_qscale )
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{
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uint8_t *p_src = h->mb.pic.p_fenc[0];
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uint8_t *p_dst = h->mb.pic.p_fdec[0];
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int16_t dct4x4[16+1][4][4];
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int i;
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if( h->mb.b_lossless )
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{
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for( i = 0; i < 16; i++ )
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{
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int oe = block_idx_x[i]*4 + block_idx_y[i]*4*FENC_STRIDE;
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int od = block_idx_x[i]*4 + block_idx_y[i]*4*FDEC_STRIDE;
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h->zigzagf.sub_4x4ac( h->dct.block[i].residual_ac, p_src+oe, p_dst+od );
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dct4x4[0][block_idx_x[i]][block_idx_y[i]] = p_src[oe] - p_dst[od];
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p_dst[od] = p_src[oe];
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}
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h->zigzagf.scan_4x4( h->dct.luma16x16_dc, dct4x4[0] );
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return;
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}
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h->dctf.sub16x16_dct( &dct4x4[1], p_src, p_dst );
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for( i = 0; i < 16; i++ )
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{
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/* copy dc coeff */
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dct4x4[0][block_idx_y[i]][block_idx_x[i]] = dct4x4[1+i][0][0];
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/* quant/scan/dequant */
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if( h->mb.b_trellis )
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x264_quant_4x4_trellis( h, dct4x4[1+i], CQM_4IY, i_qscale, DCT_LUMA_AC, 1 );
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else
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quant_4x4( h, dct4x4[1+i], h->quant4_mf[CQM_4IY], i_qscale, 1 );
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h->zigzagf.scan_4x4ac( h->dct.block[i].residual_ac, dct4x4[1+i] );
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h->quantf.dequant_4x4( dct4x4[1+i], h->dequant4_mf[CQM_4IY], i_qscale );
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}
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h->dctf.dct4x4dc( dct4x4[0] );
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quant_4x4_dc( h, dct4x4[0], h->quant4_mf[CQM_4IY], i_qscale );
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h->zigzagf.scan_4x4( h->dct.luma16x16_dc, dct4x4[0] );
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/* output samples to fdec */
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h->dctf.idct4x4dc( dct4x4[0] );
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x264_mb_dequant_4x4_dc( dct4x4[0], h->dequant4_mf[CQM_4IY], i_qscale ); /* XXX not inversed */
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/* calculate dct coeffs */
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for( i = 0; i < 16; i++ )
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{
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/* copy dc coeff */
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dct4x4[1+i][0][0] = dct4x4[0][block_idx_y[i]][block_idx_x[i]];
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}
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/* put pixels to fdec */
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h->dctf.add16x16_idct( p_dst, &dct4x4[1] );
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}
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static void x264_mb_encode_8x8_chroma( x264_t *h, int b_inter, int i_qscale )
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{
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int i, ch;
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int b_decimate = b_inter && (h->sh.i_type == SLICE_TYPE_B || h->param.analyse.b_dct_decimate);
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for( ch = 0; ch < 2; ch++ )
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{
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uint8_t *p_src = h->mb.pic.p_fenc[1+ch];
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uint8_t *p_dst = h->mb.pic.p_fdec[1+ch];
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int i_decimate_score = 0;
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int16_t dct2x2[2][2];
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int16_t dct4x4[4][4][4];
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if( h->mb.b_lossless )
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{
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for( i = 0; i < 4; i++ )
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{
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int oe = block_idx_x[i]*4 + block_idx_y[i]*4*FENC_STRIDE;
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int od = block_idx_x[i]*4 + block_idx_y[i]*4*FDEC_STRIDE;
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h->zigzagf.sub_4x4ac( h->dct.block[16+i+ch*4].residual_ac, p_src+oe, p_dst+od );
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h->dct.chroma_dc[ch][i] = p_src[oe] - p_dst[od];
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p_dst[od] = p_src[oe];
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}
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continue;
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}
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h->dctf.sub8x8_dct( dct4x4, p_src, p_dst );
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/* calculate dct coeffs */
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for( i = 0; i < 4; i++ )
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{
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/* copy dc coeff */
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dct2x2[block_idx_y[i]][block_idx_x[i]] = dct4x4[i][0][0];
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/* no trellis; it doesn't seem to help chroma noticeably */
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quant_4x4_chroma( h, dct4x4[i], h->quant4_mf[CQM_4IC + b_inter], i_qscale, !b_inter );
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h->zigzagf.scan_4x4ac( h->dct.block[16+i+ch*4].residual_ac, dct4x4[i] );
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if( b_decimate )
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{
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i_decimate_score += x264_mb_decimate_score( h->dct.block[16+i+ch*4].residual_ac, 15 );
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}
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}
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h->dctf.dct2x2dc( dct2x2 );
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quant_2x2_dc( h, dct2x2, h->quant4_mf[CQM_4IC + b_inter], i_qscale, !b_inter );
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zigzag_scan_2x2_dc( h->dct.chroma_dc[ch], dct2x2 );
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/* output samples to fdec */
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h->dctf.idct2x2dc( dct2x2 );
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x264_mb_dequant_2x2_dc( dct2x2, h->dequant4_mf[CQM_4IC + b_inter], i_qscale ); /* XXX not inversed */
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if( b_decimate && i_decimate_score < 7 )
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{
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/* Near null chroma 8x8 block so make it null (bits saving) */
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memset( &h->dct.block[16+ch*4], 0, 4 * sizeof( *h->dct.block ) );
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if( !array_non_zero( (int*)dct2x2, sizeof(dct2x2)/sizeof(int) ) )
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continue;
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memset( dct4x4, 0, sizeof( dct4x4 ) );
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}
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else
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{
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for( i = 0; i < 4; i++ )
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h->quantf.dequant_4x4( dct4x4[i], h->dequant4_mf[CQM_4IC + b_inter], i_qscale );
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}
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for( i = 0; i < 4; i++ )
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dct4x4[i][0][0] = dct2x2[0][i];
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h->dctf.add8x8_idct( p_dst, dct4x4 );
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}
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}
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static void x264_macroblock_encode_skip( x264_t *h )
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{
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int i;
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h->mb.i_cbp_luma = 0x00;
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h->mb.i_cbp_chroma = 0x00;
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for( i = 0; i < 16+8; i++ )
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{
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h->mb.cache.non_zero_count[x264_scan8[i]] = 0;
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}
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/* store cbp */
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h->mb.cbp[h->mb.i_mb_xy] = 0;
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}
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/*****************************************************************************
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* x264_macroblock_encode_pskip:
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* Encode an already marked skip block
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*****************************************************************************/
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void x264_macroblock_encode_pskip( x264_t *h )
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{
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const int mvx = x264_clip3( h->mb.cache.mv[0][x264_scan8[0]][0],
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h->mb.mv_min[0], h->mb.mv_max[0] );
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const int mvy = x264_clip3( h->mb.cache.mv[0][x264_scan8[0]][1],
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h->mb.mv_min[1], h->mb.mv_max[1] );
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/* Motion compensation XXX probably unneeded */
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h->mc.mc_luma( h->mb.pic.p_fref[0][0], h->mb.pic.i_stride[0],
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h->mb.pic.p_fdec[0], FDEC_STRIDE,
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mvx, mvy, 16, 16 );
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/* Chroma MC */
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h->mc.mc_chroma( h->mb.pic.p_fref[0][0][4], h->mb.pic.i_stride[1],
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h->mb.pic.p_fdec[1], FDEC_STRIDE,
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mvx, mvy, 8, 8 );
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h->mc.mc_chroma( h->mb.pic.p_fref[0][0][5], h->mb.pic.i_stride[2],
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h->mb.pic.p_fdec[2], FDEC_STRIDE,
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mvx, mvy, 8, 8 );
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x264_macroblock_encode_skip( h );
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}
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/*****************************************************************************
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* x264_macroblock_encode:
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*****************************************************************************/
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void x264_macroblock_encode( x264_t *h )
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{
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int i_cbp_dc = 0;
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int i_qp = h->mb.i_qp;
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int b_decimate = h->sh.i_type == SLICE_TYPE_B || h->param.analyse.b_dct_decimate;
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int b_force_no_skip = 0;
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int i;
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if( h->sh.b_mbaff
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&& h->mb.i_mb_xy == h->sh.i_first_mb + h->mb.i_mb_stride
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&& IS_SKIP(h->mb.type[h->sh.i_first_mb]) )
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{
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/* The first skip is predicted to be a frame mb pair.
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* We don't yet support the aff part of mbaff, so force it to non-skip
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* 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 )
|
|
{
|
|
/* XXX motion compensation is probably unneeded */
|
|
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;
|
|
/* do the right prediction */
|
|
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( uint8_t, edge[33], 8 );
|
|
h->mb.b_transform_8x8 = 1;
|
|
for( i = 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] );
|
|
h->predict_8x8[i_mode]( p_dst, edge );
|
|
x264_mb_encode_i8x8( h, i, i_qp );
|
|
}
|
|
}
|
|
else if( h->mb.i_type == I_4x4 )
|
|
{
|
|
h->mb.b_transform_8x8 = 0;
|
|
for( i = 0; i < 16; i++ )
|
|
{
|
|
uint8_t *p_dst = &h->mb.pic.p_fdec[0][4 * block_idx_x[i] + 4 * block_idx_y[i] * FDEC_STRIDE];
|
|
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;
|
|
|
|
h->predict_4x4[i_mode]( p_dst );
|
|
x264_mb_encode_i4x4( h, i, i_qp );
|
|
}
|
|
}
|
|
else /* Inter MB */
|
|
{
|
|
int i8x8, i4x4, idx;
|
|
int i_decimate_mb = 0;
|
|
|
|
/* Motion compensation */
|
|
x264_mb_mc( h );
|
|
|
|
if( h->mb.b_lossless )
|
|
{
|
|
for( i4x4 = 0; i4x4 < 16; i4x4++ )
|
|
{
|
|
int x = 4*block_idx_x[i4x4];
|
|
int y = 4*block_idx_y[i4x4];
|
|
h->zigzagf.sub_4x4( h->dct.block[i4x4].luma4x4,
|
|
h->mb.pic.p_fenc[0]+x+y*FENC_STRIDE,
|
|
h->mb.pic.p_fdec[0]+x+y*FDEC_STRIDE );
|
|
}
|
|
}
|
|
else if( h->mb.b_transform_8x8 )
|
|
{
|
|
int16_t dct8x8[4][8][8];
|
|
int nnz8x8[4] = {1,1,1,1};
|
|
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] );
|
|
|
|
for( idx = 0; idx < 4; idx++ )
|
|
{
|
|
if( h->mb.b_noise_reduction )
|
|
x264_denoise_dct( h, (int16_t*)dct8x8[idx] );
|
|
if( h->mb.b_trellis )
|
|
x264_quant_8x8_trellis( h, dct8x8[idx], CQM_8PY, i_qp, 0 );
|
|
else
|
|
quant_8x8( h, dct8x8[idx], h->quant8_mf[CQM_8PY], i_qp, 0 );
|
|
|
|
h->zigzagf.scan_8x8( h->dct.luma8x8[idx], dct8x8[idx] );
|
|
|
|
if( b_decimate )
|
|
{
|
|
int i_decimate_8x8 = x264_mb_decimate_score( h->dct.luma8x8[idx], 64 );
|
|
i_decimate_mb += i_decimate_8x8;
|
|
if( i_decimate_8x8 < 4 )
|
|
{
|
|
memset( h->dct.luma8x8[idx], 0, sizeof( h->dct.luma8x8[idx] ) );
|
|
memset( dct8x8[idx], 0, sizeof( dct8x8[idx] ) );
|
|
nnz8x8[idx] = 0;
|
|
}
|
|
}
|
|
else
|
|
nnz8x8[idx] = array_non_zero( (int*)dct8x8[idx], sizeof(*dct8x8)/sizeof(int) );
|
|
}
|
|
|
|
if( i_decimate_mb < 6 && b_decimate )
|
|
memset( h->dct.luma8x8, 0, sizeof( h->dct.luma8x8 ) );
|
|
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
|
|
{
|
|
int16_t dct4x4[16][4][4];
|
|
int nnz8x8[4] = {1,1,1,1};
|
|
h->dctf.sub16x16_dct( dct4x4, h->mb.pic.p_fenc[0], h->mb.pic.p_fdec[0] );
|
|
|
|
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 )
|
|
x264_denoise_dct( h, (int16_t*)dct4x4[idx] );
|
|
if( h->mb.b_trellis )
|
|
x264_quant_4x4_trellis( h, dct4x4[idx], CQM_4PY, i_qp, DCT_LUMA_4x4, 0 );
|
|
else
|
|
quant_4x4( h, dct4x4[idx], h->quant4_mf[CQM_4PY], i_qp, 0 );
|
|
|
|
h->zigzagf.scan_4x4( h->dct.block[idx].luma4x4, dct4x4[idx] );
|
|
|
|
if( b_decimate )
|
|
i_decimate_8x8 += x264_mb_decimate_score( h->dct.block[idx].luma4x4, 16 );
|
|
}
|
|
|
|
/* decimate this 8x8 block */
|
|
i_decimate_mb += i_decimate_8x8;
|
|
if( i_decimate_8x8 < 4 && b_decimate )
|
|
{
|
|
memset( &dct4x4[i8x8*4], 0, 4 * sizeof( *dct4x4 ) );
|
|
memset( &h->dct.block[i8x8*4], 0, 4 * sizeof( *h->dct.block ) );
|
|
nnz8x8[i8x8] = 0;
|
|
}
|
|
}
|
|
|
|
if( i_decimate_mb < 6 && b_decimate )
|
|
memset( h->dct.block, 0, 16 * sizeof( *h->dct.block ) );
|
|
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 */
|
|
i_qp = i_chroma_qp_table[x264_clip3( i_qp + h->pps->i_chroma_qp_index_offset, 0, 51 )];
|
|
if( IS_INTRA( h->mb.i_type ) )
|
|
{
|
|
const int i_mode = h->mb.i_chroma_pred_mode;
|
|
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 ), i_qp );
|
|
|
|
/* Calculate the Luma/Chroma pattern and non_zero_count */
|
|
h->mb.i_cbp_luma = 0x00;
|
|
if( h->mb.i_type == I_16x16 )
|
|
{
|
|
for( i = 0; i < 16; i++ )
|
|
{
|
|
const int nz = array_non_zero_count( h->dct.block[i].residual_ac, 15 );
|
|
h->mb.cache.non_zero_count[x264_scan8[i]] = nz;
|
|
if( nz > 0 )
|
|
h->mb.i_cbp_luma = 0x0f;
|
|
}
|
|
}
|
|
else if( h->mb.b_transform_8x8 )
|
|
{
|
|
/* coded_block_flag is enough for CABAC.
|
|
* the full non_zero_count is done only in CAVLC. */
|
|
for( i = 0; i < 4; i++ )
|
|
{
|
|
const int nz = array_non_zero( h->dct.luma8x8[i], 64 );
|
|
int j;
|
|
for( j = 0; j < 4; j++ )
|
|
h->mb.cache.non_zero_count[x264_scan8[4*i+j]] = nz;
|
|
if( nz > 0 )
|
|
h->mb.i_cbp_luma |= 1 << i;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for( i = 0; i < 16; i++ )
|
|
{
|
|
const int nz = array_non_zero_count( h->dct.block[i].luma4x4, 16 );
|
|
h->mb.cache.non_zero_count[x264_scan8[i]] = nz;
|
|
if( nz > 0 )
|
|
h->mb.i_cbp_luma |= 1 << (i/4);
|
|
}
|
|
}
|
|
|
|
/* Calculate the chroma pattern */
|
|
h->mb.i_cbp_chroma = 0x00;
|
|
for( i = 0; i < 8; i++ )
|
|
{
|
|
const int nz = array_non_zero_count( h->dct.block[16+i].residual_ac, 15 );
|
|
h->mb.cache.non_zero_count[x264_scan8[16+i]] = nz;
|
|
if( nz > 0 )
|
|
{
|
|
h->mb.i_cbp_chroma = 0x02; /* dc+ac (we can't do only ac) */
|
|
}
|
|
}
|
|
if( h->mb.i_cbp_chroma == 0x00 && array_non_zero( h->dct.chroma_dc[0], 8 ) )
|
|
{
|
|
h->mb.i_cbp_chroma = 0x01; /* dc only */
|
|
}
|
|
|
|
if( h->param.b_cabac )
|
|
{
|
|
i_cbp_dc = ( h->mb.i_type == I_16x16 && array_non_zero( h->dct.luma16x16_dc, 16 ) )
|
|
| array_non_zero( h->dct.chroma_dc[0], 4 ) << 1
|
|
| array_non_zero( h->dct.chroma_dc[1], 4 ) << 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 == 0x00 && h->mb.i_cbp_chroma == 0x00 &&
|
|
h->mb.cache.mv[0][x264_scan8[0]][0] == h->mb.cache.pskip_mv[0] &&
|
|
h->mb.cache.mv[0][x264_scan8[0]][1] == h->mb.cache.pskip_mv[1] &&
|
|
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 == 0x00 && h->mb.i_cbp_chroma== 0x00 )
|
|
{
|
|
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( int16_t, dct4x4[16][4][4], 16 );
|
|
DECLARE_ALIGNED( int16_t, dct2x2[2][2], 16 );
|
|
DECLARE_ALIGNED( int, dctscan[16], 16 );
|
|
|
|
int i_qp = h->mb.i_qp;
|
|
int mvp[2];
|
|
int ch;
|
|
|
|
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_fref[0][0], h->mb.pic.i_stride[0],
|
|
h->mb.pic.p_fdec[0], FDEC_STRIDE,
|
|
mvp[0], mvp[1], 16, 16 );
|
|
}
|
|
|
|
/* get luma diff */
|
|
h->dctf.sub16x16_dct( dct4x4, h->mb.pic.p_fenc[0],
|
|
h->mb.pic.p_fdec[0] );
|
|
|
|
for( i8x8 = 0, i_decimate_mb = 0; i8x8 < 4; i8x8++ )
|
|
{
|
|
/* encode one 4x4 block */
|
|
for( i4x4 = 0; i4x4 < 4; i4x4++ )
|
|
{
|
|
const int idx = i8x8 * 4 + i4x4;
|
|
|
|
quant_4x4( h, dct4x4[idx], (int(*)[4][4])def_quant4_mf, i_qp, 0 );
|
|
h->zigzagf.scan_4x4( dctscan, dct4x4[idx] );
|
|
|
|
i_decimate_mb += x264_mb_decimate_score( dctscan, 16 );
|
|
|
|
if( i_decimate_mb >= 6 )
|
|
{
|
|
/* not as P_SKIP */
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* encode chroma */
|
|
i_qp = i_chroma_qp_table[x264_clip3( i_qp + h->pps->i_chroma_qp_index_offset, 0, 51 )];
|
|
|
|
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_fref[0][0][4+ch], h->mb.pic.i_stride[1+ch],
|
|
h->mb.pic.p_fdec[1+ch], FDEC_STRIDE,
|
|
mvp[0], mvp[1], 8, 8 );
|
|
}
|
|
|
|
h->dctf.sub8x8_dct( dct4x4, p_src, p_dst );
|
|
|
|
/* calculate dct DC */
|
|
dct2x2[0][0] = dct4x4[0][0][0];
|
|
dct2x2[0][1] = dct4x4[1][0][0];
|
|
dct2x2[1][0] = dct4x4[2][0][0];
|
|
dct2x2[1][1] = dct4x4[3][0][0];
|
|
h->dctf.dct2x2dc( dct2x2 );
|
|
quant_2x2_dc( h, dct2x2, (int(*)[4][4])def_quant4_mf, i_qp, 0 );
|
|
if( dct2x2[0][0] || dct2x2[0][1] || dct2x2[1][0] || dct2x2[1][1] )
|
|
{
|
|
/* can't be */
|
|
return 0;
|
|
}
|
|
|
|
/* calculate dct coeffs */
|
|
for( i4x4 = 0, i_decimate_mb = 0; i4x4 < 4; i4x4++ )
|
|
{
|
|
quant_4x4_chroma( h, dct4x4[i4x4], (int(*)[4][4])def_quant4_mf, i_qp, 0 );
|
|
h->zigzagf.scan_4x4ac( dctscan, dct4x4[i4x4] );
|
|
|
|
i_decimate_mb += x264_mb_decimate_score( dctscan, 15 );
|
|
if( i_decimate_mb >= 7 )
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
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 int *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);
|
|
}
|
|
}
|
|
|
|
void x264_denoise_dct( x264_t *h, int16_t *dct )
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{
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const int cat = h->mb.b_transform_8x8;
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int i;
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h->nr_count[cat]++;
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for( i = (cat ? 63 : 15); i >= 1; i-- )
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{
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int level = dct[i];
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if( level )
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{
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if( level > 0 )
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{
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h->nr_residual_sum[cat][i] += level;
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level -= h->nr_offset[cat][i];
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if( level < 0 )
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level = 0;
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}
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else
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{
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h->nr_residual_sum[cat][i] -= level;
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level += h->nr_offset[cat][i];
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if( level > 0 )
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level = 0;
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}
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dct[i] = level;
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}
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}
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}
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/*****************************************************************************
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* RD only; 4 calls to this do not make up for one macroblock_encode.
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* doesn't transform chroma dc.
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*****************************************************************************/
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void x264_macroblock_encode_p8x8( x264_t *h, int i8 )
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|
{
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int i_qp = h->mb.i_qp;
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uint8_t *p_fenc = h->mb.pic.p_fenc[0] + (i8&1)*8 + (i8>>1)*8*FENC_STRIDE;
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uint8_t *p_fdec = h->mb.pic.p_fdec[0] + (i8&1)*8 + (i8>>1)*8*FDEC_STRIDE;
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int b_decimate = h->sh.i_type == SLICE_TYPE_B || h->param.analyse.b_dct_decimate;
|
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int nnz8x8;
|
|
int ch;
|
|
|
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x264_mb_mc_8x8( h, i8 );
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|
|
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if( h->mb.b_transform_8x8 )
|
|
{
|
|
int16_t dct8x8[8][8];
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|
h->dctf.sub8x8_dct8( dct8x8, p_fenc, p_fdec );
|
|
quant_8x8( h, dct8x8, h->quant8_mf[CQM_8PY], i_qp, 0 );
|
|
h->zigzagf.scan_8x8( h->dct.luma8x8[i8], dct8x8 );
|
|
|
|
if( b_decimate )
|
|
nnz8x8 = 4 <= x264_mb_decimate_score( h->dct.luma8x8[i8], 64 );
|
|
else
|
|
nnz8x8 = array_non_zero( (int*)dct8x8, sizeof(dct8x8)/sizeof(int) );
|
|
|
|
if( nnz8x8 )
|
|
{
|
|
h->quantf.dequant_8x8( dct8x8, h->dequant8_mf[CQM_8PY], i_qp );
|
|
h->dctf.add8x8_idct8( p_fdec, dct8x8 );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int i4;
|
|
int16_t dct4x4[4][4][4];
|
|
h->dctf.sub8x8_dct( dct4x4, p_fenc, p_fdec );
|
|
quant_4x4( h, dct4x4[0], h->quant4_mf[CQM_4PY], i_qp, 0 );
|
|
quant_4x4( h, dct4x4[1], h->quant4_mf[CQM_4PY], i_qp, 0 );
|
|
quant_4x4( h, dct4x4[2], h->quant4_mf[CQM_4PY], i_qp, 0 );
|
|
quant_4x4( h, dct4x4[3], h->quant4_mf[CQM_4PY], i_qp, 0 );
|
|
for( i4 = 0; i4 < 4; i4++ )
|
|
h->zigzagf.scan_4x4( h->dct.block[i8*4+i4].luma4x4, dct4x4[i4] );
|
|
|
|
if( b_decimate )
|
|
{
|
|
int i_decimate_8x8 = 0;
|
|
for( i4 = 0; i4 < 4 && i_decimate_8x8 < 4; i4++ )
|
|
i_decimate_8x8 += x264_mb_decimate_score( h->dct.block[i8*4+i4].luma4x4, 16 );
|
|
nnz8x8 = 4 <= i_decimate_8x8;
|
|
}
|
|
else
|
|
nnz8x8 = array_non_zero( (int*)dct4x4, sizeof(dct4x4)/sizeof(int) );
|
|
|
|
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 = i_chroma_qp_table[x264_clip3( i_qp + h->pps->i_chroma_qp_index_offset, 0, 51 )];
|
|
|
|
for( ch = 0; ch < 2; ch++ )
|
|
{
|
|
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 );
|
|
quant_4x4_chroma( h, dct4x4, h->quant4_mf[CQM_4PC], i_qp, 0 );
|
|
h->zigzagf.scan_4x4ac( h->dct.block[16+i8+ch*4].residual_ac, dct4x4 );
|
|
if( array_non_zero( (int*)dct4x4, sizeof(dct4x4)/sizeof(int) ) )
|
|
{
|
|
h->quantf.dequant_4x4( dct4x4, h->dequant4_mf[CQM_4PC], i_qp );
|
|
h->dctf.add4x4_idct( p_fdec, dct4x4 );
|
|
}
|
|
}
|
|
|
|
if( nnz8x8 )
|
|
h->mb.i_cbp_luma |= (1 << i8);
|
|
else
|
|
h->mb.i_cbp_luma &= ~(1 << i8);
|
|
h->mb.i_cbp_chroma = 0x02;
|
|
}
|