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macroblock.c
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/*****************************************************************************
* macroblock.c: macroblock encoding
*****************************************************************************
* Copyright (C) 2003-2022 x264 project
*
* Authors: Laurent Aimar <[email protected]>
* Loren Merritt <[email protected]>
* Fiona Glaser <[email protected]>
* Henrik Gramner <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at [email protected].
*****************************************************************************/
#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*2+y];
static inline void zigzag_scan_2x2_dc( dctcoef level[4], dctcoef dct[4] )
{
ZIG(0,0,0)
ZIG(1,0,1)
ZIG(2,1,0)
ZIG(3,1,1)
}
#undef ZIG
static inline void zigzag_scan_2x4_dc( dctcoef level[8], dctcoef dct[8] )
{
level[0] = dct[0];
level[1] = dct[2];
level[2] = dct[1];
level[3] = dct[4];
level[4] = dct[6];
level[5] = dct[3];
level[6] = dct[5];
level[7] = dct[7];
}
#define IDCT_DEQUANT_2X2_START \
int d0 = dct[0] + dct[1]; \
int d1 = dct[2] + dct[3]; \
int d2 = dct[0] - dct[1]; \
int d3 = dct[2] - dct[3]; \
int dmf = dequant_mf[i_qp%6][0] << i_qp/6;
static inline void idct_dequant_2x2_dc( dctcoef dct[4], dctcoef dct4x4[4][16], int dequant_mf[6][16], int i_qp )
{
IDCT_DEQUANT_2X2_START
dct4x4[0][0] = (d0 + d1) * dmf >> 5;
dct4x4[1][0] = (d0 - d1) * dmf >> 5;
dct4x4[2][0] = (d2 + d3) * dmf >> 5;
dct4x4[3][0] = (d2 - d3) * dmf >> 5;
}
static inline void idct_dequant_2x2_dconly( dctcoef dct[4], int dequant_mf[6][16], int i_qp )
{
IDCT_DEQUANT_2X2_START
dct[0] = (d0 + d1) * dmf >> 5;
dct[1] = (d0 - d1) * dmf >> 5;
dct[2] = (d2 + d3) * dmf >> 5;
dct[3] = (d2 - d3) * dmf >> 5;
}
#undef IDCT_2X2_DEQUANT_START
static inline void dct2x2dc( dctcoef d[4], dctcoef dct4x4[4][16] )
{
int d0 = dct4x4[0][0] + dct4x4[1][0];
int d1 = dct4x4[2][0] + dct4x4[3][0];
int d2 = dct4x4[0][0] - dct4x4[1][0];
int d3 = dct4x4[2][0] - dct4x4[3][0];
d[0] = d0 + d1;
d[2] = d2 + d3;
d[1] = d0 - d1;
d[3] = d2 - d3;
dct4x4[0][0] = 0;
dct4x4[1][0] = 0;
dct4x4[2][0] = 0;
dct4x4[3][0] = 0;
}
static ALWAYS_INLINE int array_non_zero( dctcoef *v, int i_count )
{
if( WORD_SIZE == 8 )
{
for( int i = 0; i < i_count; i += 8/sizeof(dctcoef) )
if( M64( &v[i] ) )
return 1;
}
else
{
for( int i = 0; i < i_count; i += 4/sizeof(dctcoef) )
if( M32( &v[i] ) )
return 1;
}
return 0;
}
/* All encoding functions must output the correct CBP and NNZ values.
* The entropy coding functions will check CBP first, then NNZ, before
* actually reading the DCT coefficients. NNZ still must be correct even
* if CBP is zero because of the use of NNZ values for context selection.
* "NNZ" need only be 0 or 1 rather than the exact coefficient count because
* that is only needed in CAVLC, and will be calculated by CAVLC's residual
* coding and stored as necessary. */
/* This means that decimation can be done merely by adjusting the CBP and NNZ
* rather than memsetting the coefficients. */
static void mb_encode_i16x16( x264_t *h, int p, int i_qp )
{
pixel *p_src = h->mb.pic.p_fenc[p];
pixel *p_dst = h->mb.pic.p_fdec[p];
ALIGNED_ARRAY_64( dctcoef, dct4x4,[16],[16] );
ALIGNED_ARRAY_64( dctcoef, dct_dc4x4,[16] );
int nz, block_cbp = 0;
int decimate_score = h->mb.b_dct_decimate ? 0 : 9;
int i_quant_cat = p ? CQM_4IC : CQM_4IY;
int i_mode = h->mb.i_intra16x16_pred_mode;
if( h->mb.b_lossless )
x264_predict_lossless_16x16( h, p, i_mode );
else
h->predict_16x16[i_mode]( h->mb.pic.p_fdec[p] );
if( h->mb.b_lossless )
{
for( int i = 0; i < 16; i++ )
{
int oe = block_idx_xy_fenc[i];
int od = block_idx_xy_fdec[i];
nz = h->zigzagf.sub_4x4ac( h->dct.luma4x4[16*p+i], p_src+oe, p_dst+od, &dct_dc4x4[block_idx_yx_1d[i]] );
h->mb.cache.non_zero_count[x264_scan8[16*p+i]] = nz;
block_cbp |= nz;
}
h->mb.i_cbp_luma |= block_cbp * 0xf;
h->mb.cache.non_zero_count[x264_scan8[LUMA_DC+p]] = array_non_zero( dct_dc4x4, 16 );
h->zigzagf.scan_4x4( h->dct.luma16x16_dc[p], dct_dc4x4 );
return;
}
CLEAR_16x16_NNZ( p );
h->dctf.sub16x16_dct( dct4x4, p_src, p_dst );
if( h->mb.b_noise_reduction )
for( int idx = 0; idx < 16; idx++ )
h->quantf.denoise_dct( dct4x4[idx], h->nr_residual_sum[0], h->nr_offset[0], 16 );
for( int idx = 0; idx < 16; idx++ )
{
dct_dc4x4[block_idx_xy_1d[idx]] = dct4x4[idx][0];
dct4x4[idx][0] = 0;
}
if( h->mb.b_trellis )
{
for( int idx = 0; idx < 16; idx++ )
if( x264_quant_4x4_trellis( h, dct4x4[idx], i_quant_cat, i_qp, ctx_cat_plane[DCT_LUMA_AC][p], 1, !!p, idx ) )
{
block_cbp = 0xf;
h->zigzagf.scan_4x4( h->dct.luma4x4[16*p+idx], dct4x4[idx] );
h->quantf.dequant_4x4( dct4x4[idx], h->dequant4_mf[i_quant_cat], i_qp );
if( decimate_score < 6 ) decimate_score += h->quantf.decimate_score15( h->dct.luma4x4[16*p+idx] );
h->mb.cache.non_zero_count[x264_scan8[16*p+idx]] = 1;
}
}
else
{
for( int i8x8 = 0; i8x8 < 4; i8x8++ )
{
nz = h->quantf.quant_4x4x4( &dct4x4[i8x8*4], h->quant4_mf[i_quant_cat][i_qp], h->quant4_bias[i_quant_cat][i_qp] );
if( nz )
{
block_cbp = 0xf;
FOREACH_BIT( idx, i8x8*4, nz )
{
h->zigzagf.scan_4x4( h->dct.luma4x4[16*p+idx], dct4x4[idx] );
h->quantf.dequant_4x4( dct4x4[idx], h->dequant4_mf[i_quant_cat], i_qp );
if( decimate_score < 6 ) decimate_score += h->quantf.decimate_score15( h->dct.luma4x4[16*p+idx] );
h->mb.cache.non_zero_count[x264_scan8[16*p+idx]] = 1;
}
}
}
}
/* Writing the 16 CBFs in an i16x16 block is quite costly, so decimation can save many bits. */
/* More useful with CAVLC, but still useful with CABAC. */
if( decimate_score < 6 )
{
CLEAR_16x16_NNZ( p );
block_cbp = 0;
}
else
h->mb.i_cbp_luma |= block_cbp;
h->dctf.dct4x4dc( dct_dc4x4 );
if( h->mb.b_trellis )
nz = x264_quant_luma_dc_trellis( h, dct_dc4x4, i_quant_cat, i_qp, ctx_cat_plane[DCT_LUMA_DC][p], 1, LUMA_DC+p );
else
nz = h->quantf.quant_4x4_dc( dct_dc4x4, h->quant4_mf[i_quant_cat][i_qp][0]>>1, h->quant4_bias[i_quant_cat][i_qp][0]<<1 );
h->mb.cache.non_zero_count[x264_scan8[LUMA_DC+p]] = nz;
if( nz )
{
h->zigzagf.scan_4x4( h->dct.luma16x16_dc[p], dct_dc4x4 );
/* output samples to fdec */
h->dctf.idct4x4dc( dct_dc4x4 );
h->quantf.dequant_4x4_dc( dct_dc4x4, h->dequant4_mf[i_quant_cat], i_qp ); /* XXX not inversed */
if( block_cbp )
for( int i = 0; i < 16; i++ )
dct4x4[i][0] = dct_dc4x4[block_idx_xy_1d[i]];
}
/* put pixels to fdec */
if( block_cbp )
h->dctf.add16x16_idct( p_dst, dct4x4 );
else if( nz )
h->dctf.add16x16_idct_dc( p_dst, dct_dc4x4 );
}
/* Round down coefficients losslessly in DC-only chroma blocks.
* Unlike luma blocks, this can't be done with a lookup table or
* other shortcut technique because of the interdependencies
* between the coefficients due to the chroma DC transform. */
static ALWAYS_INLINE int mb_optimize_chroma_dc( x264_t *h, dctcoef *dct_dc, int dequant_mf[6][16], int i_qp, int chroma422 )
{
int dmf = dequant_mf[i_qp%6][0] << i_qp/6;
/* If the QP is too high, there's no benefit to rounding optimization. */
if( dmf > 32*64 )
return 1;
if( chroma422 )
return h->quantf.optimize_chroma_2x4_dc( dct_dc, dmf );
else
return h->quantf.optimize_chroma_2x2_dc( dct_dc, dmf );
}
static ALWAYS_INLINE void mb_encode_chroma_internal( x264_t *h, int b_inter, int i_qp, int chroma422 )
{
int nz, nz_dc;
int b_decimate = b_inter && h->mb.b_dct_decimate;
int (*dequant_mf)[16] = h->dequant4_mf[CQM_4IC + b_inter];
ALIGNED_ARRAY_16( dctcoef, dct_dc,[8] );
h->mb.i_cbp_chroma = 0;
h->nr_count[2] += h->mb.b_noise_reduction * 4;
M16( &h->mb.cache.non_zero_count[x264_scan8[16]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[18]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[32]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[34]] ) = 0;
if( chroma422 )
{
M16( &h->mb.cache.non_zero_count[x264_scan8[24]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[26]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[40]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[42]] ) = 0;
}
/* Early termination: check variance of chroma residual before encoding.
* Don't bother trying early termination at low QPs.
* Values are experimentally derived. */
if( b_decimate && i_qp >= (h->mb.b_trellis ? 12 : 18) && !h->mb.b_noise_reduction )
{
int thresh = chroma422 ? (x264_lambda2_tab[i_qp] + 16) >> 5 : (x264_lambda2_tab[i_qp] + 32) >> 6;
ALIGNED_ARRAY_8( int, ssd,[2] );
int chromapix = chroma422 ? PIXEL_8x16 : PIXEL_8x8;
if( h->pixf.var2[chromapix]( h->mb.pic.p_fenc[1], h->mb.pic.p_fdec[1], ssd ) < thresh*4 )
{
h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+0]] = 0;
h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+1]] = 0;
for( int ch = 0; ch < 2; ch++ )
{
if( ssd[ch] > thresh )
{
pixel *p_src = h->mb.pic.p_fenc[1+ch];
pixel *p_dst = h->mb.pic.p_fdec[1+ch];
if( chroma422 )
/* Cannot be replaced by two calls to sub8x8_dct_dc since the hadamard transform is different */
h->dctf.sub8x16_dct_dc( dct_dc, p_src, p_dst );
else
h->dctf.sub8x8_dct_dc( dct_dc, p_src, p_dst );
if( h->mb.b_trellis )
nz_dc = x264_quant_chroma_dc_trellis( h, dct_dc, i_qp+3*chroma422, !b_inter, CHROMA_DC+ch );
else
{
nz_dc = 0;
for( int i = 0; i <= chroma422; i++ )
nz_dc |= h->quantf.quant_2x2_dc( &dct_dc[4*i], h->quant4_mf[CQM_4IC+b_inter][i_qp+3*chroma422][0] >> 1,
h->quant4_bias[CQM_4IC+b_inter][i_qp+3*chroma422][0] << 1 );
}
if( nz_dc )
{
if( !mb_optimize_chroma_dc( h, dct_dc, dequant_mf, i_qp+3*chroma422, chroma422 ) )
continue;
h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+ch]] = 1;
if( chroma422 )
{
zigzag_scan_2x4_dc( h->dct.chroma_dc[ch], dct_dc );
h->quantf.idct_dequant_2x4_dconly( dct_dc, dequant_mf, i_qp+3 );
}
else
{
zigzag_scan_2x2_dc( h->dct.chroma_dc[ch], dct_dc );
idct_dequant_2x2_dconly( dct_dc, dequant_mf, i_qp );
}
for( int i = 0; i <= chroma422; i++ )
h->dctf.add8x8_idct_dc( p_dst + 8*i*FDEC_STRIDE, &dct_dc[4*i] );
h->mb.i_cbp_chroma = 1;
}
}
}
return;
}
}
for( int ch = 0; ch < 2; ch++ )
{
pixel *p_src = h->mb.pic.p_fenc[1+ch];
pixel *p_dst = h->mb.pic.p_fdec[1+ch];
int i_decimate_score = b_decimate ? 0 : 7;
int nz_ac = 0;
ALIGNED_ARRAY_64( dctcoef, dct4x4,[8],[16] );
if( h->mb.b_lossless )
{
static const uint8_t chroma422_scan[8] = { 0, 2, 1, 5, 3, 6, 4, 7 };
for( int i = 0; i < (chroma422?8:4); i++ )
{
int oe = 4*(i&1) + 4*(i>>1)*FENC_STRIDE;
int od = 4*(i&1) + 4*(i>>1)*FDEC_STRIDE;
nz = h->zigzagf.sub_4x4ac( h->dct.luma4x4[16+i+(chroma422?i&4:0)+ch*16], p_src+oe, p_dst+od,
&h->dct.chroma_dc[ch][chroma422?chroma422_scan[i]:i] );
h->mb.cache.non_zero_count[x264_scan8[16+i+(chroma422?i&4:0)+ch*16]] = nz;
h->mb.i_cbp_chroma |= nz;
}
h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+ch]] = array_non_zero( h->dct.chroma_dc[ch], chroma422?8:4 );
continue;
}
for( int i = 0; i <= chroma422; i++ )
h->dctf.sub8x8_dct( &dct4x4[4*i], p_src + 8*i*FENC_STRIDE, p_dst + 8*i*FDEC_STRIDE );
if( h->mb.b_noise_reduction )
for( int i = 0; i < (chroma422?8:4); i++ )
h->quantf.denoise_dct( dct4x4[i], h->nr_residual_sum[2], h->nr_offset[2], 16 );
if( chroma422 )
h->dctf.dct2x4dc( dct_dc, dct4x4 );
else
dct2x2dc( dct_dc, dct4x4 );
/* calculate dct coeffs */
for( int i8x8 = 0; i8x8 < (chroma422?2:1); i8x8++ )
{
if( h->mb.b_trellis )
{
for( int i4x4 = 0; i4x4 < 4; i4x4++ )
{
if( x264_quant_4x4_trellis( h, dct4x4[i8x8*4+i4x4], CQM_4IC+b_inter, i_qp, DCT_CHROMA_AC, !b_inter, 1, 0 ) )
{
int idx = 16+ch*16+i8x8*8+i4x4;
h->zigzagf.scan_4x4( h->dct.luma4x4[idx], dct4x4[i8x8*4+i4x4] );
h->quantf.dequant_4x4( dct4x4[i8x8*4+i4x4], dequant_mf, i_qp );
if( i_decimate_score < 7 )
i_decimate_score += h->quantf.decimate_score15( h->dct.luma4x4[idx] );
h->mb.cache.non_zero_count[x264_scan8[idx]] = 1;
nz_ac = 1;
}
}
}
else
{
nz = h->quantf.quant_4x4x4( &dct4x4[i8x8*4], h->quant4_mf[CQM_4IC+b_inter][i_qp],
h->quant4_bias[CQM_4IC+b_inter][i_qp] );
nz_ac |= nz;
FOREACH_BIT( i4x4, 0, nz )
{
int idx = 16+ch*16+i8x8*8+i4x4;
h->zigzagf.scan_4x4( h->dct.luma4x4[idx], dct4x4[i8x8*4+i4x4] );
h->quantf.dequant_4x4( dct4x4[i8x8*4+i4x4], dequant_mf, i_qp );
if( i_decimate_score < 7 )
i_decimate_score += h->quantf.decimate_score15( h->dct.luma4x4[idx] );
h->mb.cache.non_zero_count[x264_scan8[idx]] = 1;
}
}
}
if( h->mb.b_trellis )
nz_dc = x264_quant_chroma_dc_trellis( h, dct_dc, i_qp+3*chroma422, !b_inter, CHROMA_DC+ch );
else
{
nz_dc = 0;
for( int i = 0; i <= chroma422; i++ )
nz_dc |= h->quantf.quant_2x2_dc( &dct_dc[4*i], h->quant4_mf[CQM_4IC+b_inter][i_qp+3*chroma422][0] >> 1,
h->quant4_bias[CQM_4IC+b_inter][i_qp+3*chroma422][0] << 1 );
}
h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+ch]] = nz_dc;
if( i_decimate_score < 7 || !nz_ac )
{
/* Decimate the block */
M16( &h->mb.cache.non_zero_count[x264_scan8[16+16*ch]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[18+16*ch]] ) = 0;
if( chroma422 )
{
M16( &h->mb.cache.non_zero_count[x264_scan8[24+16*ch]] ) = 0;
M16( &h->mb.cache.non_zero_count[x264_scan8[26+16*ch]] ) = 0;
}
if( !nz_dc ) /* Whole block is empty */
continue;
if( !mb_optimize_chroma_dc( h, dct_dc, dequant_mf, i_qp+3*chroma422, chroma422 ) )
{
h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+ch]] = 0;
continue;
}
/* DC-only */
if( chroma422 )
{
zigzag_scan_2x4_dc( h->dct.chroma_dc[ch], dct_dc );
h->quantf.idct_dequant_2x4_dconly( dct_dc, dequant_mf, i_qp+3 );
}
else
{
zigzag_scan_2x2_dc( h->dct.chroma_dc[ch], dct_dc );
idct_dequant_2x2_dconly( dct_dc, dequant_mf, i_qp );
}
for( int i = 0; i <= chroma422; i++ )
h->dctf.add8x8_idct_dc( p_dst + 8*i*FDEC_STRIDE, &dct_dc[4*i] );
}
else
{
h->mb.i_cbp_chroma = 1;
if( nz_dc )
{
if( chroma422 )
{
zigzag_scan_2x4_dc( h->dct.chroma_dc[ch], dct_dc );
h->quantf.idct_dequant_2x4_dc( dct_dc, dct4x4, dequant_mf, i_qp+3 );
}
else
{
zigzag_scan_2x2_dc( h->dct.chroma_dc[ch], dct_dc );
idct_dequant_2x2_dc( dct_dc, dct4x4, dequant_mf, i_qp );
}
}
for( int i = 0; i <= chroma422; i++ )
h->dctf.add8x8_idct( p_dst + 8*i*FDEC_STRIDE, &dct4x4[4*i] );
}
}
/* 0 = none, 1 = DC only, 2 = DC+AC */
h->mb.i_cbp_chroma += (h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+0]] |
h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+1]] | h->mb.i_cbp_chroma);
}
void x264_mb_encode_chroma( x264_t *h, int b_inter, int i_qp )
{
if( CHROMA_FORMAT == CHROMA_420 )
mb_encode_chroma_internal( h, b_inter, i_qp, 0 );
else
mb_encode_chroma_internal( h, b_inter, i_qp, 1 );
}
static void macroblock_encode_skip( x264_t *h )
{
M32( &h->mb.cache.non_zero_count[x264_scan8[ 0]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[ 2]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[ 8]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[10]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[16+ 0]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[16+ 2]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[32+ 0]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[32+ 2]] ) = 0;
if( CHROMA_FORMAT >= CHROMA_422 )
{
M32( &h->mb.cache.non_zero_count[x264_scan8[16+ 8]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[16+10]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[32+ 8]] ) = 0;
M32( &h->mb.cache.non_zero_count[x264_scan8[32+10]] ) = 0;
}
h->mb.i_cbp_luma = 0;
h->mb.i_cbp_chroma = 0;
h->mb.cbp[h->mb.i_mb_xy] = 0;
}
/*****************************************************************************
* Intra prediction for predictive lossless mode.
*****************************************************************************/
void x264_predict_lossless_chroma( x264_t *h, int i_mode )
{
int height = 16 >> CHROMA_V_SHIFT;
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[1]-FENC_STRIDE, FENC_STRIDE, height );
h->mc.copy[PIXEL_8x8]( h->mb.pic.p_fdec[2], FDEC_STRIDE, h->mb.pic.p_fenc[2]-FENC_STRIDE, FENC_STRIDE, height );
memcpy( h->mb.pic.p_fdec[1], h->mb.pic.p_fdec[1]-FDEC_STRIDE, 8*SIZEOF_PIXEL );
memcpy( h->mb.pic.p_fdec[2], h->mb.pic.p_fdec[2]-FDEC_STRIDE, 8*SIZEOF_PIXEL );
}
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[1]-1, FENC_STRIDE, height );
h->mc.copy[PIXEL_8x8]( h->mb.pic.p_fdec[2], FDEC_STRIDE, h->mb.pic.p_fenc[2]-1, FENC_STRIDE, height );
x264_copy_column8( h->mb.pic.p_fdec[1]+4*FDEC_STRIDE, h->mb.pic.p_fdec[1]+4*FDEC_STRIDE-1 );
x264_copy_column8( h->mb.pic.p_fdec[2]+4*FDEC_STRIDE, h->mb.pic.p_fdec[2]+4*FDEC_STRIDE-1 );
if( CHROMA_FORMAT == CHROMA_422 )
{
x264_copy_column8( h->mb.pic.p_fdec[1]+12*FDEC_STRIDE, h->mb.pic.p_fdec[1]+12*FDEC_STRIDE-1 );
x264_copy_column8( h->mb.pic.p_fdec[2]+12*FDEC_STRIDE, h->mb.pic.p_fdec[2]+12*FDEC_STRIDE-1 );
}
}
else
{
h->predict_chroma[i_mode]( h->mb.pic.p_fdec[1] );
h->predict_chroma[i_mode]( h->mb.pic.p_fdec[2] );
}
}
void x264_predict_lossless_4x4( x264_t *h, pixel *p_dst, int p, int idx, int i_mode )
{
int stride = h->fenc->i_stride[p] << MB_INTERLACED;
pixel *p_src = h->mb.pic.p_fenc_plane[p] + 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 );
memcpy( p_dst, p_dst-FDEC_STRIDE, 4*SIZEOF_PIXEL );
}
else if( i_mode == I_PRED_4x4_H )
{
h->mc.copy[PIXEL_4x4]( p_dst, FDEC_STRIDE, p_src-1, stride, 4 );
for( int i = 0; i < 4; i++ )
p_dst[i*FDEC_STRIDE] = p_dst[i*FDEC_STRIDE-1];
}
else
h->predict_4x4[i_mode]( p_dst );
}
void x264_predict_lossless_8x8( x264_t *h, pixel *p_dst, int p, int idx, int i_mode, pixel edge[36] )
{
int stride = h->fenc->i_stride[p] << MB_INTERLACED;
pixel *p_src = h->mb.pic.p_fenc_plane[p] + (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 );
memcpy( p_dst, &edge[16], 8*SIZEOF_PIXEL );
}
else if( i_mode == I_PRED_8x8_H )
{
h->mc.copy[PIXEL_8x8]( p_dst, FDEC_STRIDE, p_src-1, stride, 8 );
for( int i = 0; i < 8; i++ )
p_dst[i*FDEC_STRIDE] = edge[14-i];
}
else
h->predict_8x8[i_mode]( p_dst, edge );
}
void x264_predict_lossless_16x16( x264_t *h, int p, int i_mode )
{
int stride = h->fenc->i_stride[p] << MB_INTERLACED;
pixel *p_dst = h->mb.pic.p_fdec[p];
if( i_mode == I_PRED_16x16_V )
{
h->mc.copy[PIXEL_16x16]( p_dst, FDEC_STRIDE, h->mb.pic.p_fenc_plane[p]-stride, stride, 16 );
memcpy( p_dst, p_dst-FDEC_STRIDE, 16*SIZEOF_PIXEL );
}
else if( i_mode == I_PRED_16x16_H )
{
h->mc.copy_16x16_unaligned( p_dst, FDEC_STRIDE, h->mb.pic.p_fenc_plane[p]-1, stride, 16 );
for( int i = 0; i < 16; i++ )
p_dst[i*FDEC_STRIDE] = p_dst[i*FDEC_STRIDE-1];
}
else
h->predict_16x16[i_mode]( p_dst );
}
/*****************************************************************************
* x264_macroblock_encode:
*****************************************************************************/
static ALWAYS_INLINE void macroblock_encode_internal( x264_t *h, int plane_count, int chroma )
{
int i_qp = h->mb.i_qp;
int b_decimate = h->mb.b_dct_decimate;
int b_force_no_skip = 0;
int nz;
h->mb.i_cbp_luma = 0;
for( int p = 0; p < plane_count; p++ )
h->mb.cache.non_zero_count[x264_scan8[LUMA_DC+p]] = 0;
if( h->mb.i_type == I_PCM )
{
/* if PCM is chosen, we need to store reconstructed frame data */
for( int p = 0; p < plane_count; p++ )
h->mc.copy[PIXEL_16x16]( h->mb.pic.p_fdec[p], FDEC_STRIDE, h->mb.pic.p_fenc[p], FENC_STRIDE, 16 );
if( chroma )
{
int height = 16 >> CHROMA_V_SHIFT;
h->mc.copy[PIXEL_8x8] ( h->mb.pic.p_fdec[1], FDEC_STRIDE, h->mb.pic.p_fenc[1], FENC_STRIDE, height );
h->mc.copy[PIXEL_8x8] ( h->mb.pic.p_fdec[2], FDEC_STRIDE, h->mb.pic.p_fenc[2], FENC_STRIDE, height );
}
return;
}
if( !h->mb.b_allow_skip )
{
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 )
{
/* don't do pskip motion compensation if it was already done in macroblock_analyse */
if( !h->mb.b_skip_mc )
{
int mvx = x264_clip3( h->mb.cache.mv[0][x264_scan8[0]][0],
h->mb.mv_min[0], h->mb.mv_max[0] );
int mvy = x264_clip3( h->mb.cache.mv[0][x264_scan8[0]][1],
h->mb.mv_min[1], h->mb.mv_max[1] );
for( int p = 0; p < plane_count; p++ )
h->mc.mc_luma( h->mb.pic.p_fdec[p], FDEC_STRIDE,
&h->mb.pic.p_fref[0][0][p*4], h->mb.pic.i_stride[p],
mvx, mvy, 16, 16, &h->sh.weight[0][p] );
if( chroma )
{
int v_shift = CHROMA_V_SHIFT;
int height = 16 >> v_shift;
/* Special case for mv0, which is (of course) very common in P-skip mode. */
if( mvx | mvy )
h->mc.mc_chroma( h->mb.pic.p_fdec[1], h->mb.pic.p_fdec[2], FDEC_STRIDE,
h->mb.pic.p_fref[0][0][4], h->mb.pic.i_stride[1],
mvx, 2*mvy>>v_shift, 8, height );
else
h->mc.load_deinterleave_chroma_fdec( h->mb.pic.p_fdec[1], h->mb.pic.p_fref[0][0][4],
h->mb.pic.i_stride[1], height );
if( h->sh.weight[0][1].weightfn )
h->sh.weight[0][1].weightfn[8>>2]( h->mb.pic.p_fdec[1], FDEC_STRIDE,
h->mb.pic.p_fdec[1], FDEC_STRIDE,
&h->sh.weight[0][1], height );
if( h->sh.weight[0][2].weightfn )
h->sh.weight[0][2].weightfn[8>>2]( h->mb.pic.p_fdec[2], FDEC_STRIDE,
h->mb.pic.p_fdec[2], FDEC_STRIDE,
&h->sh.weight[0][2], height );
}
}
macroblock_encode_skip( 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 );
macroblock_encode_skip( h );
return;
}
if( h->mb.i_type == I_16x16 )
{
h->mb.b_transform_8x8 = 0;
for( int p = 0; p < plane_count; p++, i_qp = h->mb.i_chroma_qp )
mb_encode_i16x16( h, p, i_qp );
}
else if( h->mb.i_type == I_8x8 )
{
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 );
M32( &h->mb.cache.non_zero_count[x264_scan8[ 0]] ) = h->mb.pic.i8x8_nnz_buf[0];
M32( &h->mb.cache.non_zero_count[x264_scan8[ 2]] ) = h->mb.pic.i8x8_nnz_buf[1];
M32( &h->mb.cache.non_zero_count[x264_scan8[ 8]] ) = h->mb.pic.i8x8_nnz_buf[2];
M32( &h->mb.cache.non_zero_count[x264_scan8[10]] ) = h->mb.pic.i8x8_nnz_buf[3];
h->mb.i_cbp_luma = h->mb.pic.i8x8_cbp;
/* 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( int p = 0; p < plane_count; p++, i_qp = h->mb.i_chroma_qp )
{
for( int i = (p == 0 && h->mb.i_skip_intra) ? 3 : 0; i < 4; i++ )
{
int i_mode = h->mb.cache.intra4x4_pred_mode[x264_scan8[4*i]];
x264_mb_encode_i8x8( h, p, i, i_qp, i_mode, NULL, 1 );
}
}
}
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 );
M32( &h->mb.cache.non_zero_count[x264_scan8[ 0]] ) = h->mb.pic.i4x4_nnz_buf[0];
M32( &h->mb.cache.non_zero_count[x264_scan8[ 2]] ) = h->mb.pic.i4x4_nnz_buf[1];
M32( &h->mb.cache.non_zero_count[x264_scan8[ 8]] ) = h->mb.pic.i4x4_nnz_buf[2];
M32( &h->mb.cache.non_zero_count[x264_scan8[10]] ) = h->mb.pic.i4x4_nnz_buf[3];
h->mb.i_cbp_luma = h->mb.pic.i4x4_cbp;
/* 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( int p = 0; p < plane_count; p++, i_qp = h->mb.i_chroma_qp )
{
for( int i = (p == 0 && h->mb.i_skip_intra) ? 15 : 0; i < 16; i++ )
{
pixel *p_dst = &h->mb.pic.p_fdec[p][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 */
MPIXEL_X4( &p_dst[4-FDEC_STRIDE] ) = PIXEL_SPLAT_X4( p_dst[3-FDEC_STRIDE] );
x264_mb_encode_i4x4( h, p, i, i_qp, i_mode, 1 );
}
}
}
else /* Inter MB */
{
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( int p = 0; p < plane_count; p++ )
for( int i8x8 = 0; i8x8 < 4; i8x8++ )
{
int x = i8x8&1;
int y = i8x8>>1;
nz = h->zigzagf.sub_8x8( h->dct.luma8x8[p*4+i8x8], h->mb.pic.p_fenc[p] + 8*x + 8*y*FENC_STRIDE,
h->mb.pic.p_fdec[p] + 8*x + 8*y*FDEC_STRIDE );
STORE_8x8_NNZ( p, i8x8, nz );
h->mb.i_cbp_luma |= nz << i8x8;
}
else
for( int p = 0; p < plane_count; p++ )
for( int i4x4 = 0; i4x4 < 16; i4x4++ )
{
nz = h->zigzagf.sub_4x4( h->dct.luma4x4[p*16+i4x4],
h->mb.pic.p_fenc[p]+block_idx_xy_fenc[i4x4],
h->mb.pic.p_fdec[p]+block_idx_xy_fdec[i4x4] );
h->mb.cache.non_zero_count[x264_scan8[p*16+i4x4]] = nz;
h->mb.i_cbp_luma |= nz << (i4x4>>2);
}
}
else if( h->mb.b_transform_8x8 )
{
ALIGNED_ARRAY_64( dctcoef, dct8x8,[4],[64] );
b_decimate &= !h->mb.b_trellis || !h->param.b_cabac; // 8x8 trellis is inherently optimal decimation for CABAC
for( int p = 0; p < plane_count; p++, i_qp = h->mb.i_chroma_qp )
{
int quant_cat = p ? CQM_8PC : CQM_8PY;
CLEAR_16x16_NNZ( p );
h->dctf.sub16x16_dct8( dct8x8, h->mb.pic.p_fenc[p], h->mb.pic.p_fdec[p] );
h->nr_count[1+!!p*2] += h->mb.b_noise_reduction * 4;
int plane_cbp = 0;
for( int idx = 0; idx < 4; idx++ )
{
nz = x264_quant_8x8( h, dct8x8[idx], i_qp, ctx_cat_plane[DCT_LUMA_8x8][p], 0, p, idx );
if( nz )
{
h->zigzagf.scan_8x8( h->dct.luma8x8[p*4+idx], dct8x8[idx] );
if( b_decimate )
{
int i_decimate_8x8 = h->quantf.decimate_score64( h->dct.luma8x8[p*4+idx] );
i_decimate_mb += i_decimate_8x8;
if( i_decimate_8x8 >= 4 )
plane_cbp |= 1<<idx;
}
else
plane_cbp |= 1<<idx;
}
}
if( i_decimate_mb >= 6 || !b_decimate )
{
h->mb.i_cbp_luma |= plane_cbp;
FOREACH_BIT( idx, 0, plane_cbp )
{
h->quantf.dequant_8x8( dct8x8[idx], h->dequant8_mf[quant_cat], i_qp );
h->dctf.add8x8_idct8( &h->mb.pic.p_fdec[p][8*(idx&1) + 8*(idx>>1)*FDEC_STRIDE], dct8x8[idx] );
STORE_8x8_NNZ( p, idx, 1 );
}
}
}
}
else
{
ALIGNED_ARRAY_64( dctcoef, dct4x4,[16],[16] );
for( int p = 0; p < plane_count; p++, i_qp = h->mb.i_chroma_qp )
{
int quant_cat = p ? CQM_4PC : CQM_4PY;
CLEAR_16x16_NNZ( p );
h->dctf.sub16x16_dct( dct4x4, h->mb.pic.p_fenc[p], h->mb.pic.p_fdec[p] );
if( h->mb.b_noise_reduction )
{
h->nr_count[0+!!p*2] += 16;
for( int idx = 0; idx < 16; idx++ )
h->quantf.denoise_dct( dct4x4[idx], h->nr_residual_sum[0+!!p*2], h->nr_offset[0+!!p*2], 16 );
}
int plane_cbp = 0;
for( int i8x8 = 0; i8x8 < 4; i8x8++ )
{
int i_decimate_8x8 = b_decimate ? 0 : 6;
int nnz8x8 = 0;
if( h->mb.b_trellis )
{
for( int i4x4 = 0; i4x4 < 4; i4x4++ )
{
int idx = i8x8*4+i4x4;
if( x264_quant_4x4_trellis( h, dct4x4[idx], quant_cat, i_qp, ctx_cat_plane[DCT_LUMA_4x4][p], 0, !!p, p*16+idx ) )
{
h->zigzagf.scan_4x4( h->dct.luma4x4[p*16+idx], dct4x4[idx] );
h->quantf.dequant_4x4( dct4x4[idx], h->dequant4_mf[quant_cat], i_qp );
if( i_decimate_8x8 < 6 )
i_decimate_8x8 += h->quantf.decimate_score16( h->dct.luma4x4[p*16+idx] );
h->mb.cache.non_zero_count[x264_scan8[p*16+idx]] = 1;
nnz8x8 = 1;
}
}
}
else
{
nnz8x8 = nz = h->quantf.quant_4x4x4( &dct4x4[i8x8*4], h->quant4_mf[quant_cat][i_qp], h->quant4_bias[quant_cat][i_qp] );
if( nz )
{
FOREACH_BIT( idx, i8x8*4, nz )
{
h->zigzagf.scan_4x4( h->dct.luma4x4[p*16+idx], dct4x4[idx] );
h->quantf.dequant_4x4( dct4x4[idx], h->dequant4_mf[quant_cat], i_qp );
if( i_decimate_8x8 < 6 )
i_decimate_8x8 += h->quantf.decimate_score16( h->dct.luma4x4[p*16+idx] );
h->mb.cache.non_zero_count[x264_scan8[p*16+idx]] = 1;
}
}
}
if( nnz8x8 )
{
i_decimate_mb += i_decimate_8x8;
if( i_decimate_8x8 < 4 )
STORE_8x8_NNZ( p, i8x8, 0 );
else
plane_cbp |= 1<<i8x8;
}
}
if( i_decimate_mb < 6 )
{
plane_cbp = 0;
CLEAR_16x16_NNZ( p );
}
else
{
h->mb.i_cbp_luma |= plane_cbp;
FOREACH_BIT( i8x8, 0, plane_cbp )
{
h->dctf.add8x8_idct( &h->mb.pic.p_fdec[p][(i8x8&1)*8 + (i8x8>>1)*8*FDEC_STRIDE], &dct4x4[i8x8*4] );
}
}
}
}
}
/* encode chroma */
if( chroma )
{
if( IS_INTRA( h->mb.i_type ) )
{
int i_mode = h->mb.i_chroma_pred_mode;
if( h->mb.b_lossless )
x264_predict_lossless_chroma( h, i_mode );
else
{
h->predict_chroma[i_mode]( h->mb.pic.p_fdec[1] );
h->predict_chroma[i_mode]( h->mb.pic.p_fdec[2] );
}
}
/* encode the 8x8 blocks */
x264_mb_encode_chroma( h, !IS_INTRA( h->mb.i_type ), h->mb.i_chroma_qp );
}
else
h->mb.i_cbp_chroma = 0;
/* store cbp */
int cbp = h->mb.i_cbp_chroma << 4 | h->mb.i_cbp_luma;
if( h->param.b_cabac )
cbp |= h->mb.cache.non_zero_count[x264_scan8[LUMA_DC ]] << 8
| h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+0]] << 9
| h->mb.cache.non_zero_count[x264_scan8[CHROMA_DC+1]] << 10;
h->mb.cbp[h->mb.i_mb_xy] = cbp;
/* 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) &&
M32( h->mb.cache.mv[0][x264_scan8[0]] ) == M32( 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;
}
}
}
void x264_macroblock_encode( x264_t *h )
{
if( CHROMA444 )
macroblock_encode_internal( h, 3, 0 );
else if( CHROMA_FORMAT )
macroblock_encode_internal( h, 1, 1 );
else
macroblock_encode_internal( h, 1, 0 );
}
/*****************************************************************************
* x264_macroblock_probe_skip:
* Check if the current MB could be encoded as a [PB]_SKIP
*****************************************************************************/
static ALWAYS_INLINE int macroblock_probe_skip_internal( x264_t *h, int b_bidir, int plane_count, int chroma )
{
ALIGNED_ARRAY_64( dctcoef, dct4x4,[8],[16] );
ALIGNED_ARRAY_64( dctcoef, dctscan,[16] );
ALIGNED_4( int16_t mvp[2] );
int i_qp = h->mb.i_qp;
for( int p = 0; p < plane_count; p++, i_qp = h->mb.i_chroma_qp )
{
int quant_cat = p ? CQM_4PC : CQM_4PY;
if( !b_bidir )
{
/* Get the MV */