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macroblock.c
1917 lines (1741 loc) · 79.7 KB
/
macroblock.c
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/*****************************************************************************
* macroblock.c: macroblock common functions
*****************************************************************************
* Copyright (C) 2003-2018 x264 project
*
* Authors: Fiona Glaser <fiona@x264.com>
* Laurent Aimar <fenrir@via.ecp.fr>
* Loren Merritt <lorenm@u.washington.edu>
* Henrik Gramner <henrik@gramner.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#include "common.h"
#define MC_LUMA(list,p) \
h->mc.mc_luma( &h->mb.pic.p_fdec[p][4*y*FDEC_STRIDE+4*x], FDEC_STRIDE, \
&h->mb.pic.p_fref[list][i_ref][p*4], h->mb.pic.i_stride[p], \
mvx, mvy, 4*width, 4*height, \
list ? x264_weight_none : &h->sh.weight[i_ref][p] );
static NOINLINE void mb_mc_0xywh( x264_t *h, int x, int y, int width, int height )
{
int i8 = x264_scan8[0]+x+8*y;
int i_ref = h->mb.cache.ref[0][i8];
int mvx = x264_clip3( h->mb.cache.mv[0][i8][0], h->mb.mv_min[0], h->mb.mv_max[0] ) + 4*4*x;
int mvy = x264_clip3( h->mb.cache.mv[0][i8][1], h->mb.mv_min[1], h->mb.mv_max[1] ) + 4*4*y;
MC_LUMA( 0, 0 );
if( CHROMA444 )
{
MC_LUMA( 0, 1 );
MC_LUMA( 0, 2 );
}
else if( CHROMA_FORMAT )
{
int v_shift = CHROMA_V_SHIFT;
// Chroma in 4:2:0 is offset if MCing from a field of opposite parity
if( v_shift & MB_INTERLACED & i_ref )
mvy += (h->mb.i_mb_y & 1)*4 - 2;
int offset = (4*FDEC_STRIDE>>v_shift)*y + 2*x;
height = 4*height >> v_shift;
h->mc.mc_chroma( &h->mb.pic.p_fdec[1][offset],
&h->mb.pic.p_fdec[2][offset], FDEC_STRIDE,
h->mb.pic.p_fref[0][i_ref][4], h->mb.pic.i_stride[1],
mvx, 2*mvy>>v_shift, 2*width, height );
if( h->sh.weight[i_ref][1].weightfn )
h->sh.weight[i_ref][1].weightfn[width>>1]( &h->mb.pic.p_fdec[1][offset], FDEC_STRIDE,
&h->mb.pic.p_fdec[1][offset], FDEC_STRIDE,
&h->sh.weight[i_ref][1], height );
if( h->sh.weight[i_ref][2].weightfn )
h->sh.weight[i_ref][2].weightfn[width>>1]( &h->mb.pic.p_fdec[2][offset], FDEC_STRIDE,
&h->mb.pic.p_fdec[2][offset], FDEC_STRIDE,
&h->sh.weight[i_ref][2], height );
}
}
static NOINLINE void mb_mc_1xywh( x264_t *h, int x, int y, int width, int height )
{
int i8 = x264_scan8[0]+x+8*y;
int i_ref = h->mb.cache.ref[1][i8];
int mvx = x264_clip3( h->mb.cache.mv[1][i8][0], h->mb.mv_min[0], h->mb.mv_max[0] ) + 4*4*x;
int mvy = x264_clip3( h->mb.cache.mv[1][i8][1], h->mb.mv_min[1], h->mb.mv_max[1] ) + 4*4*y;
MC_LUMA( 1, 0 );
if( CHROMA444 )
{
MC_LUMA( 1, 1 );
MC_LUMA( 1, 2 );
}
else if( CHROMA_FORMAT )
{
int v_shift = CHROMA_V_SHIFT;
if( v_shift & MB_INTERLACED & i_ref )
mvy += (h->mb.i_mb_y & 1)*4 - 2;
int offset = (4*FDEC_STRIDE>>v_shift)*y + 2*x;
h->mc.mc_chroma( &h->mb.pic.p_fdec[1][offset],
&h->mb.pic.p_fdec[2][offset], FDEC_STRIDE,
h->mb.pic.p_fref[1][i_ref][4], h->mb.pic.i_stride[1],
mvx, 2*mvy>>v_shift, 2*width, 4*height>>v_shift );
}
}
#define MC_LUMA_BI(p) \
src0 = h->mc.get_ref( tmp0, &i_stride0, &h->mb.pic.p_fref[0][i_ref0][p*4], h->mb.pic.i_stride[p], \
mvx0, mvy0, 4*width, 4*height, x264_weight_none ); \
src1 = h->mc.get_ref( tmp1, &i_stride1, &h->mb.pic.p_fref[1][i_ref1][p*4], h->mb.pic.i_stride[p], \
mvx1, mvy1, 4*width, 4*height, x264_weight_none ); \
h->mc.avg[i_mode]( &h->mb.pic.p_fdec[p][4*y*FDEC_STRIDE+4*x], FDEC_STRIDE, \
src0, i_stride0, src1, i_stride1, weight );
static NOINLINE void mb_mc_01xywh( x264_t *h, int x, int y, int width, int height )
{
int i8 = x264_scan8[0]+x+8*y;
int i_ref0 = h->mb.cache.ref[0][i8];
int i_ref1 = h->mb.cache.ref[1][i8];
int weight = h->mb.bipred_weight[i_ref0][i_ref1];
int mvx0 = x264_clip3( h->mb.cache.mv[0][i8][0], h->mb.mv_min[0], h->mb.mv_max[0] ) + 4*4*x;
int mvx1 = x264_clip3( h->mb.cache.mv[1][i8][0], h->mb.mv_min[0], h->mb.mv_max[0] ) + 4*4*x;
int mvy0 = x264_clip3( h->mb.cache.mv[0][i8][1], h->mb.mv_min[1], h->mb.mv_max[1] ) + 4*4*y;
int mvy1 = x264_clip3( h->mb.cache.mv[1][i8][1], h->mb.mv_min[1], h->mb.mv_max[1] ) + 4*4*y;
int i_mode = x264_size2pixel[height][width];
intptr_t i_stride0 = 16, i_stride1 = 16;
ALIGNED_ARRAY_32( pixel, tmp0,[16*16] );
ALIGNED_ARRAY_32( pixel, tmp1,[16*16] );
pixel *src0, *src1;
MC_LUMA_BI( 0 );
if( CHROMA444 )
{
MC_LUMA_BI( 1 );
MC_LUMA_BI( 2 );
}
else if( CHROMA_FORMAT )
{
int v_shift = CHROMA_V_SHIFT;
if( v_shift & MB_INTERLACED & i_ref0 )
mvy0 += (h->mb.i_mb_y & 1)*4 - 2;
if( v_shift & MB_INTERLACED & i_ref1 )
mvy1 += (h->mb.i_mb_y & 1)*4 - 2;
h->mc.mc_chroma( tmp0, tmp0+8, 16, h->mb.pic.p_fref[0][i_ref0][4], h->mb.pic.i_stride[1],
mvx0, 2*mvy0>>v_shift, 2*width, 4*height>>v_shift );
h->mc.mc_chroma( tmp1, tmp1+8, 16, h->mb.pic.p_fref[1][i_ref1][4], h->mb.pic.i_stride[1],
mvx1, 2*mvy1>>v_shift, 2*width, 4*height>>v_shift );
int chromapix = h->luma2chroma_pixel[i_mode];
int offset = (4*FDEC_STRIDE>>v_shift)*y + 2*x;
h->mc.avg[chromapix]( &h->mb.pic.p_fdec[1][offset], FDEC_STRIDE, tmp0, 16, tmp1, 16, weight );
h->mc.avg[chromapix]( &h->mb.pic.p_fdec[2][offset], FDEC_STRIDE, tmp0+8, 16, tmp1+8, 16, weight );
}
}
#undef MC_LUMA
#undef MC_LUMA_BI
void x264_mb_mc_8x8( x264_t *h, int i8 )
{
int x = 2*(i8&1);
int y = 2*(i8>>1);
if( h->sh.i_type == SLICE_TYPE_P )
{
switch( h->mb.i_sub_partition[i8] )
{
case D_L0_8x8:
mb_mc_0xywh( h, x, y, 2, 2 );
break;
case D_L0_8x4:
mb_mc_0xywh( h, x, y+0, 2, 1 );
mb_mc_0xywh( h, x, y+1, 2, 1 );
break;
case D_L0_4x8:
mb_mc_0xywh( h, x+0, y, 1, 2 );
mb_mc_0xywh( h, x+1, y, 1, 2 );
break;
case D_L0_4x4:
mb_mc_0xywh( h, x+0, y+0, 1, 1 );
mb_mc_0xywh( h, x+1, y+0, 1, 1 );
mb_mc_0xywh( h, x+0, y+1, 1, 1 );
mb_mc_0xywh( h, x+1, y+1, 1, 1 );
break;
}
}
else
{
int scan8 = x264_scan8[0] + x + 8*y;
if( h->mb.cache.ref[0][scan8] >= 0 )
if( h->mb.cache.ref[1][scan8] >= 0 )
mb_mc_01xywh( h, x, y, 2, 2 );
else
mb_mc_0xywh( h, x, y, 2, 2 );
else
mb_mc_1xywh( h, x, y, 2, 2 );
}
}
void x264_mb_mc( x264_t *h )
{
if( h->mb.i_partition == D_8x8 )
{
for( int i = 0; i < 4; i++ )
x264_mb_mc_8x8( h, i );
}
else
{
int ref0a = h->mb.cache.ref[0][x264_scan8[ 0]];
int ref0b = h->mb.cache.ref[0][x264_scan8[12]];
int ref1a = h->mb.cache.ref[1][x264_scan8[ 0]];
int ref1b = h->mb.cache.ref[1][x264_scan8[12]];
if( h->mb.i_partition == D_16x16 )
{
if( ref0a >= 0 )
if( ref1a >= 0 ) mb_mc_01xywh( h, 0, 0, 4, 4 );
else mb_mc_0xywh ( h, 0, 0, 4, 4 );
else mb_mc_1xywh ( h, 0, 0, 4, 4 );
}
else if( h->mb.i_partition == D_16x8 )
{
if( ref0a >= 0 )
if( ref1a >= 0 ) mb_mc_01xywh( h, 0, 0, 4, 2 );
else mb_mc_0xywh ( h, 0, 0, 4, 2 );
else mb_mc_1xywh ( h, 0, 0, 4, 2 );
if( ref0b >= 0 )
if( ref1b >= 0 ) mb_mc_01xywh( h, 0, 2, 4, 2 );
else mb_mc_0xywh ( h, 0, 2, 4, 2 );
else mb_mc_1xywh ( h, 0, 2, 4, 2 );
}
else if( h->mb.i_partition == D_8x16 )
{
if( ref0a >= 0 )
if( ref1a >= 0 ) mb_mc_01xywh( h, 0, 0, 2, 4 );
else mb_mc_0xywh ( h, 0, 0, 2, 4 );
else mb_mc_1xywh ( h, 0, 0, 2, 4 );
if( ref0b >= 0 )
if( ref1b >= 0 ) mb_mc_01xywh( h, 2, 0, 2, 4 );
else mb_mc_0xywh ( h, 2, 0, 2, 4 );
else mb_mc_1xywh ( h, 2, 0, 2, 4 );
}
}
}
int x264_macroblock_cache_allocate( x264_t *h )
{
int i_mb_count = h->mb.i_mb_count;
h->mb.i_mb_stride = h->mb.i_mb_width;
h->mb.i_b8_stride = h->mb.i_mb_width * 2;
h->mb.i_b4_stride = h->mb.i_mb_width * 4;
h->mb.b_interlaced = PARAM_INTERLACED;
PREALLOC_INIT
PREALLOC( h->mb.qp, i_mb_count * sizeof(int8_t) );
PREALLOC( h->mb.cbp, i_mb_count * sizeof(int16_t) );
PREALLOC( h->mb.mb_transform_size, i_mb_count * sizeof(int8_t) );
PREALLOC( h->mb.slice_table, i_mb_count * sizeof(uint32_t) );
/* 0 -> 3 top(4), 4 -> 6 : left(3) */
PREALLOC( h->mb.intra4x4_pred_mode, i_mb_count * 8 * sizeof(int8_t) );
/* all coeffs */
PREALLOC( h->mb.non_zero_count, i_mb_count * 48 * sizeof(uint8_t) );
if( h->param.b_cabac )
{
PREALLOC( h->mb.skipbp, i_mb_count * sizeof(int8_t) );
PREALLOC( h->mb.chroma_pred_mode, i_mb_count * sizeof(int8_t) );
PREALLOC( h->mb.mvd[0], i_mb_count * sizeof( **h->mb.mvd ) );
if( h->param.i_bframe )
PREALLOC( h->mb.mvd[1], i_mb_count * sizeof( **h->mb.mvd ) );
}
for( int i = 0; i < 2; i++ )
{
int i_refs = X264_MIN(X264_REF_MAX, (i ? 1 + !!h->param.i_bframe_pyramid : h->param.i_frame_reference) ) << PARAM_INTERLACED;
if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
i_refs = X264_MIN(X264_REF_MAX, i_refs + 1 + (BIT_DEPTH == 8)); //smart weights add two duplicate frames, one in >8-bit
for( int j = !i; j < i_refs; j++ )
PREALLOC( h->mb.mvr[i][j], 2 * (i_mb_count + 1) * sizeof(int16_t) );
}
if( h->param.analyse.i_weighted_pred )
{
int i_padv = PADV << PARAM_INTERLACED;
int luma_plane_size = 0;
int numweightbuf;
if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_FAKE )
{
// only need buffer for lookahead
if( !h->param.i_sync_lookahead || h == h->thread[h->param.i_threads] )
{
// Fake analysis only works on lowres
luma_plane_size = h->fdec->i_stride_lowres * (h->mb.i_mb_height*8+2*i_padv);
// Only need 1 buffer for analysis
numweightbuf = 1;
}
else
numweightbuf = 0;
}
else
{
/* Both ref and fenc is stored for 4:2:0 and 4:2:2 which means that 4:2:0 and 4:4:4
* needs the same amount of space and 4:2:2 needs twice that much */
luma_plane_size = h->fdec->i_stride[0] * (h->mb.i_mb_height*(16<<(CHROMA_FORMAT==CHROMA_422))+2*i_padv);
if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
//smart can weight one ref and one offset -1 in 8-bit
numweightbuf = 1 + (BIT_DEPTH == 8);
else
//simple only has one weighted ref
numweightbuf = 1;
}
for( int i = 0; i < numweightbuf; i++ )
PREALLOC( h->mb.p_weight_buf[i], luma_plane_size * sizeof(pixel) );
}
PREALLOC_END( h->mb.base );
memset( h->mb.slice_table, -1, i_mb_count * sizeof(uint32_t) );
for( int i = 0; i < 2; i++ )
{
int i_refs = X264_MIN(X264_REF_MAX, (i ? 1 + !!h->param.i_bframe_pyramid : h->param.i_frame_reference) ) << PARAM_INTERLACED;
if( h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
i_refs = X264_MIN(X264_REF_MAX, i_refs + 1 + (BIT_DEPTH == 8)); //smart weights add two duplicate frames, one in >8-bit
for( int j = !i; j < i_refs; j++ )
{
M32( h->mb.mvr[i][j][0] ) = 0;
h->mb.mvr[i][j]++;
}
}
return 0;
fail:
return -1;
}
void x264_macroblock_cache_free( x264_t *h )
{
x264_free( h->mb.base );
}
int x264_macroblock_thread_allocate( x264_t *h, int b_lookahead )
{
if( !b_lookahead )
{
for( int i = 0; i < (PARAM_INTERLACED ? 5 : 2); i++ )
for( int j = 0; j < (CHROMA444 ? 3 : 2); j++ )
{
CHECKED_MALLOC( h->intra_border_backup[i][j], (h->sps->i_mb_width*16+32) * sizeof(pixel) );
h->intra_border_backup[i][j] += 16;
}
for( int i = 0; i <= PARAM_INTERLACED; i++ )
{
if( h->param.b_sliced_threads )
{
/* Only allocate the first one, and allocate it for the whole frame, because we
* won't be deblocking until after the frame is fully encoded. */
if( h == h->thread[0] && !i )
CHECKED_MALLOC( h->deblock_strength[0], sizeof(**h->deblock_strength) * h->mb.i_mb_count );
else
h->deblock_strength[i] = h->thread[0]->deblock_strength[0];
}
else
CHECKED_MALLOC( h->deblock_strength[i], sizeof(**h->deblock_strength) * h->mb.i_mb_width );
h->deblock_strength[1] = h->deblock_strength[i];
}
}
/* Allocate scratch buffer */
int scratch_size = 0;
if( !b_lookahead )
{
int buf_hpel = (h->thread[0]->fdec->i_width[0]+48+32) * sizeof(int16_t);
int buf_ssim = h->param.analyse.b_ssim * 8 * (h->param.i_width/4+3) * sizeof(int);
int me_range = X264_MIN(h->param.analyse.i_me_range, h->param.analyse.i_mv_range);
int buf_tesa = (h->param.analyse.i_me_method >= X264_ME_ESA) *
((me_range*2+24) * sizeof(int16_t) + (me_range+4) * (me_range+1) * 4 * sizeof(mvsad_t));
scratch_size = X264_MAX3( buf_hpel, buf_ssim, buf_tesa );
}
int buf_mbtree = h->param.rc.b_mb_tree * ((h->mb.i_mb_width+15)&~15) * sizeof(int16_t);
scratch_size = X264_MAX( scratch_size, buf_mbtree );
if( scratch_size )
CHECKED_MALLOC( h->scratch_buffer, scratch_size );
else
h->scratch_buffer = NULL;
int buf_lookahead_threads = (h->mb.i_mb_height + (4 + 32) * h->param.i_lookahead_threads) * sizeof(int) * 2;
int buf_mbtree2 = buf_mbtree * 12; /* size of the internal propagate_list asm buffer */
scratch_size = X264_MAX( buf_lookahead_threads, buf_mbtree2 );
CHECKED_MALLOC( h->scratch_buffer2, scratch_size );
return 0;
fail:
return -1;
}
void x264_macroblock_thread_free( x264_t *h, int b_lookahead )
{
if( !b_lookahead )
{
for( int i = 0; i <= PARAM_INTERLACED; i++ )
if( !h->param.b_sliced_threads || (h == h->thread[0] && !i) )
x264_free( h->deblock_strength[i] );
for( int i = 0; i < (PARAM_INTERLACED ? 5 : 2); i++ )
for( int j = 0; j < (CHROMA444 ? 3 : 2); j++ )
x264_free( h->intra_border_backup[i][j] - 16 );
}
x264_free( h->scratch_buffer );
x264_free( h->scratch_buffer2 );
}
void x264_macroblock_slice_init( x264_t *h )
{
h->mb.mv[0] = h->fdec->mv[0];
h->mb.mv[1] = h->fdec->mv[1];
h->mb.mvr[0][0] = h->fdec->mv16x16;
h->mb.ref[0] = h->fdec->ref[0];
h->mb.ref[1] = h->fdec->ref[1];
h->mb.type = h->fdec->mb_type;
h->mb.partition = h->fdec->mb_partition;
h->mb.field = h->fdec->field;
h->fdec->i_ref[0] = h->i_ref[0];
h->fdec->i_ref[1] = h->i_ref[1];
for( int i = 0; i < h->i_ref[0]; i++ )
h->fdec->ref_poc[0][i] = h->fref[0][i]->i_poc;
if( h->sh.i_type == SLICE_TYPE_B )
{
for( int i = 0; i < h->i_ref[1]; i++ )
h->fdec->ref_poc[1][i] = h->fref[1][i]->i_poc;
map_col_to_list0(-1) = -1;
map_col_to_list0(-2) = -2;
for( int i = 0; i < h->fref[1][0]->i_ref[0]; i++ )
{
int poc = h->fref[1][0]->ref_poc[0][i];
map_col_to_list0(i) = -2;
for( int j = 0; j < h->i_ref[0]; j++ )
if( h->fref[0][j]->i_poc == poc )
{
map_col_to_list0(i) = j;
break;
}
}
}
else if( h->sh.i_type == SLICE_TYPE_P )
{
if( h->sh.i_disable_deblocking_filter_idc != 1 && h->param.analyse.i_weighted_pred == X264_WEIGHTP_SMART )
{
deblock_ref_table(-2) = -2;
deblock_ref_table(-1) = -1;
for( int i = 0; i < h->i_ref[0] << SLICE_MBAFF; i++ )
{
/* Mask off high bits to avoid frame num collisions with -1/-2.
* In current x264 frame num values don't cover a range of more
* than 32, so 6 bits is enough for uniqueness. */
if( !MB_INTERLACED )
deblock_ref_table(i) = h->fref[0][i]->i_frame_num&63;
else
deblock_ref_table(i) = ((h->fref[0][i>>1]->i_frame_num&63)<<1) + (i&1);
}
}
}
/* init with not available (for top right idx=7,15) */
memset( h->mb.cache.ref, -2, sizeof( h->mb.cache.ref ) );
if( h->i_ref[0] > 0 )
for( int field = 0; field <= SLICE_MBAFF; field++ )
{
int curpoc = h->fdec->i_poc + h->fdec->i_delta_poc[field];
int refpoc = h->fref[0][0]->i_poc + h->fref[0][0]->i_delta_poc[field];
int delta = curpoc - refpoc;
h->fdec->inv_ref_poc[field] = (256 + delta/2) / delta;
}
h->mb.i_neighbour4[6] =
h->mb.i_neighbour4[9] =
h->mb.i_neighbour4[12] =
h->mb.i_neighbour4[14] = MB_LEFT|MB_TOP|MB_TOPLEFT|MB_TOPRIGHT;
h->mb.i_neighbour4[3] =
h->mb.i_neighbour4[7] =
h->mb.i_neighbour4[11] =
h->mb.i_neighbour4[13] =
h->mb.i_neighbour4[15] =
h->mb.i_neighbour8[3] = MB_LEFT|MB_TOP|MB_TOPLEFT;
}
void x264_macroblock_thread_init( x264_t *h )
{
h->mb.i_me_method = h->param.analyse.i_me_method;
h->mb.i_subpel_refine = h->param.analyse.i_subpel_refine;
if( h->sh.i_type == SLICE_TYPE_B && (h->mb.i_subpel_refine == 6 || h->mb.i_subpel_refine == 8) )
h->mb.i_subpel_refine--;
h->mb.b_chroma_me = h->param.analyse.b_chroma_me &&
((h->sh.i_type == SLICE_TYPE_P && h->mb.i_subpel_refine >= 5) ||
(h->sh.i_type == SLICE_TYPE_B && h->mb.i_subpel_refine >= 9));
h->mb.b_dct_decimate = h->sh.i_type == SLICE_TYPE_B ||
(h->param.analyse.b_dct_decimate && h->sh.i_type != SLICE_TYPE_I);
h->mb.i_mb_prev_xy = -1;
/* 4:2:0 4:2:2 4:4:4
* fdec fenc fdec fenc fdec fenc
* y y y y y y y Y Y Y Y y y y y y y y Y Y Y Y y y y y y y y Y Y Y Y
* y Y Y Y Y Y Y Y Y y Y Y Y Y Y Y Y Y y Y Y Y Y Y Y Y Y
* y Y Y Y Y Y Y Y Y y Y Y Y Y Y Y Y Y y Y Y Y Y Y Y Y Y
* y Y Y Y Y Y Y Y Y y Y Y Y Y Y Y Y Y y Y Y Y Y Y Y Y Y
* y Y Y Y Y U U V V y Y Y Y Y U U V V y Y Y Y Y U U U U
* u u u v v v U U V V u u u v v v U U V V u u u u u u u U U U U
* u U U v V V u U U v V V U U V V u U U U U U U U U
* u U U v V V u U U v V V U U V V u U U U U U U U U
* u U U v V V u U U U U V V V V
* u U U v V V u U U U U V V V V
* v v v v v v v V V V V
* v V V V V V V V V
* v V V V V
* v V V V V
* v V V V V
*/
h->mb.pic.p_fenc[0] = h->mb.pic.fenc_buf;
h->mb.pic.p_fdec[0] = h->mb.pic.fdec_buf + 2*FDEC_STRIDE;
if( CHROMA_FORMAT )
{
h->mb.pic.p_fenc[1] = h->mb.pic.fenc_buf + 16*FENC_STRIDE;
h->mb.pic.p_fdec[1] = h->mb.pic.fdec_buf + 20*FDEC_STRIDE;
if( CHROMA444 )
{
h->mb.pic.p_fenc[2] = h->mb.pic.fenc_buf + 32*FENC_STRIDE;
h->mb.pic.p_fdec[2] = h->mb.pic.fdec_buf + 38*FDEC_STRIDE;
}
else
{
h->mb.pic.p_fenc[2] = h->mb.pic.fenc_buf + 16*FENC_STRIDE + 8;
h->mb.pic.p_fdec[2] = h->mb.pic.fdec_buf + 20*FDEC_STRIDE + 16;
}
}
}
void x264_prefetch_fenc( x264_t *h, x264_frame_t *fenc, int i_mb_x, int i_mb_y )
{
int stride_y = fenc->i_stride[0];
int stride_uv = fenc->i_stride[1];
int off_y = 16 * i_mb_x + 16 * i_mb_y * stride_y;
int off_uv = 16 * i_mb_x + (16 * i_mb_y * stride_uv >> CHROMA_V_SHIFT);
h->mc.prefetch_fenc( fenc->plane[0]+off_y, stride_y,
fenc->plane[1]+off_uv, stride_uv, i_mb_x );
}
NOINLINE void x264_copy_column8( pixel *dst, pixel *src )
{
// input pointers are offset by 4 rows because that's faster (smaller instruction size on x86)
for( int i = -4; i < 4; i++ )
dst[i*FDEC_STRIDE] = src[i*FDEC_STRIDE];
}
static void ALWAYS_INLINE macroblock_load_pic_pointers( x264_t *h, int mb_x, int mb_y, int i, int b_chroma, int b_mbaff )
{
int mb_interlaced = b_mbaff && MB_INTERLACED;
int height = b_chroma ? 16 >> CHROMA_V_SHIFT : 16;
int i_stride = h->fdec->i_stride[i];
int i_stride2 = i_stride << mb_interlaced;
int i_pix_offset = mb_interlaced
? 16 * mb_x + height * (mb_y&~1) * i_stride + (mb_y&1) * i_stride
: 16 * mb_x + height * mb_y * i_stride;
pixel *plane_fdec = &h->fdec->plane[i][i_pix_offset];
int fdec_idx = b_mbaff ? (mb_interlaced ? (3 + (mb_y&1)) : (mb_y&1) ? 2 : 4) : !(mb_y&1);
pixel *intra_fdec = &h->intra_border_backup[fdec_idx][i][mb_x*16];
int ref_pix_offset[2] = { i_pix_offset, i_pix_offset };
/* ref_pix_offset[0] references the current field and [1] the opposite field. */
if( mb_interlaced )
ref_pix_offset[1] += (1-2*(mb_y&1)) * i_stride;
h->mb.pic.i_stride[i] = i_stride2;
h->mb.pic.p_fenc_plane[i] = &h->fenc->plane[i][i_pix_offset];
if( b_chroma )
{
h->mc.load_deinterleave_chroma_fenc( h->mb.pic.p_fenc[1], h->mb.pic.p_fenc_plane[1], i_stride2, height );
memcpy( h->mb.pic.p_fdec[1]-FDEC_STRIDE, intra_fdec, 8*sizeof(pixel) );
memcpy( h->mb.pic.p_fdec[2]-FDEC_STRIDE, intra_fdec+8, 8*sizeof(pixel) );
h->mb.pic.p_fdec[1][-FDEC_STRIDE-1] = intra_fdec[-1-8];
h->mb.pic.p_fdec[2][-FDEC_STRIDE-1] = intra_fdec[-1];
}
else
{
h->mc.copy[PIXEL_16x16]( h->mb.pic.p_fenc[i], FENC_STRIDE, h->mb.pic.p_fenc_plane[i], i_stride2, 16 );
memcpy( h->mb.pic.p_fdec[i]-FDEC_STRIDE, intra_fdec, 24*sizeof(pixel) );
h->mb.pic.p_fdec[i][-FDEC_STRIDE-1] = intra_fdec[-1];
}
if( b_mbaff || h->mb.b_reencode_mb )
{
for( int j = 0; j < height; j++ )
if( b_chroma )
{
h->mb.pic.p_fdec[1][-1+j*FDEC_STRIDE] = plane_fdec[-2+j*i_stride2];
h->mb.pic.p_fdec[2][-1+j*FDEC_STRIDE] = plane_fdec[-1+j*i_stride2];
}
else
h->mb.pic.p_fdec[i][-1+j*FDEC_STRIDE] = plane_fdec[-1+j*i_stride2];
}
pixel *plane_src, **filtered_src;
for( int j = 0; j < h->mb.pic.i_fref[0]; j++ )
{
// Interpolate between pixels in same field.
if( mb_interlaced )
{
plane_src = h->fref[0][j>>1]->plane_fld[i];
filtered_src = h->fref[0][j>>1]->filtered_fld[i];
}
else
{
plane_src = h->fref[0][j]->plane[i];
filtered_src = h->fref[0][j]->filtered[i];
}
h->mb.pic.p_fref[0][j][i*4] = plane_src + ref_pix_offset[j&1];
if( !b_chroma )
{
for( int k = 1; k < 4; k++ )
h->mb.pic.p_fref[0][j][i*4+k] = filtered_src[k] + ref_pix_offset[j&1];
if( !i )
{
if( h->sh.weight[j][0].weightfn )
h->mb.pic.p_fref_w[j] = &h->fenc->weighted[j >> mb_interlaced][ref_pix_offset[j&1]];
else
h->mb.pic.p_fref_w[j] = h->mb.pic.p_fref[0][j][0];
}
}
}
if( h->sh.i_type == SLICE_TYPE_B )
for( int j = 0; j < h->mb.pic.i_fref[1]; j++ )
{
if( mb_interlaced )
{
plane_src = h->fref[1][j>>1]->plane_fld[i];
filtered_src = h->fref[1][j>>1]->filtered_fld[i];
}
else
{
plane_src = h->fref[1][j]->plane[i];
filtered_src = h->fref[1][j]->filtered[i];
}
h->mb.pic.p_fref[1][j][i*4] = plane_src + ref_pix_offset[j&1];
if( !b_chroma )
for( int k = 1; k < 4; k++ )
h->mb.pic.p_fref[1][j][i*4+k] = filtered_src[k] + ref_pix_offset[j&1];
}
}
static const x264_left_table_t left_indices[4] =
{
/* Current is progressive */
{{ 4, 4, 5, 5}, { 3, 3, 7, 7}, {16+1, 16+1, 32+1, 32+1}, {0, 0, 1, 1}, {0, 0, 0, 0}},
{{ 6, 6, 3, 3}, {11, 11, 15, 15}, {16+5, 16+5, 32+5, 32+5}, {2, 2, 3, 3}, {1, 1, 1, 1}},
/* Current is interlaced */
{{ 4, 6, 4, 6}, { 3, 11, 3, 11}, {16+1, 16+1, 32+1, 32+1}, {0, 2, 0, 2}, {0, 1, 0, 1}},
/* Both same */
{{ 4, 5, 6, 3}, { 3, 7, 11, 15}, {16+1, 16+5, 32+1, 32+5}, {0, 1, 2, 3}, {0, 0, 1, 1}}
};
static void ALWAYS_INLINE macroblock_cache_load_neighbours( x264_t *h, int mb_x, int mb_y, int b_interlaced )
{
const int mb_interlaced = b_interlaced && MB_INTERLACED;
int top_y = mb_y - (1 << mb_interlaced);
int top = top_y * h->mb.i_mb_stride + mb_x;
h->mb.i_mb_x = mb_x;
h->mb.i_mb_y = mb_y;
h->mb.i_mb_xy = mb_y * h->mb.i_mb_stride + mb_x;
h->mb.i_b8_xy = 2*(mb_y * h->mb.i_b8_stride + mb_x);
h->mb.i_b4_xy = 4*(mb_y * h->mb.i_b4_stride + mb_x);
h->mb.left_b8[0] =
h->mb.left_b8[1] = -1;
h->mb.left_b4[0] =
h->mb.left_b4[1] = -1;
h->mb.i_neighbour = 0;
h->mb.i_neighbour_intra = 0;
h->mb.i_neighbour_frame = 0;
h->mb.i_mb_top_xy = -1;
h->mb.i_mb_top_y = -1;
h->mb.i_mb_left_xy[0] = h->mb.i_mb_left_xy[1] = -1;
h->mb.i_mb_topleft_xy = -1;
h->mb.i_mb_topright_xy = -1;
h->mb.i_mb_type_top = -1;
h->mb.i_mb_type_left[0] = h->mb.i_mb_type_left[1] = -1;
h->mb.i_mb_type_topleft = -1;
h->mb.i_mb_type_topright = -1;
h->mb.left_index_table = &left_indices[3];
h->mb.topleft_partition = 0;
int topleft_y = top_y;
int topright_y = top_y;
int left[2];
left[0] = left[1] = h->mb.i_mb_xy - 1;
h->mb.left_b8[0] = h->mb.left_b8[1] = h->mb.i_b8_xy - 2;
h->mb.left_b4[0] = h->mb.left_b4[1] = h->mb.i_b4_xy - 4;
if( b_interlaced )
{
h->mb.i_mb_top_mbpair_xy = h->mb.i_mb_xy - 2*h->mb.i_mb_stride;
h->mb.i_mb_topleft_y = -1;
h->mb.i_mb_topright_y = -1;
if( mb_y&1 )
{
if( mb_x && mb_interlaced != h->mb.field[h->mb.i_mb_xy-1] )
{
left[0] = left[1] = h->mb.i_mb_xy - 1 - h->mb.i_mb_stride;
h->mb.left_b8[0] = h->mb.left_b8[1] = h->mb.i_b8_xy - 2 - 2*h->mb.i_b8_stride;
h->mb.left_b4[0] = h->mb.left_b4[1] = h->mb.i_b4_xy - 4 - 4*h->mb.i_b4_stride;
if( mb_interlaced )
{
h->mb.left_index_table = &left_indices[2];
left[1] += h->mb.i_mb_stride;
h->mb.left_b8[1] += 2*h->mb.i_b8_stride;
h->mb.left_b4[1] += 4*h->mb.i_b4_stride;
}
else
{
h->mb.left_index_table = &left_indices[1];
topleft_y++;
h->mb.topleft_partition = 1;
}
}
if( !mb_interlaced )
topright_y = -1;
}
else
{
if( mb_interlaced && top >= 0 )
{
if( !h->mb.field[top] )
{
top += h->mb.i_mb_stride;
top_y++;
}
if( mb_x )
topleft_y += !h->mb.field[h->mb.i_mb_stride*topleft_y + mb_x - 1];
if( mb_x < h->mb.i_mb_width-1 )
topright_y += !h->mb.field[h->mb.i_mb_stride*topright_y + mb_x + 1];
}
if( mb_x && mb_interlaced != h->mb.field[h->mb.i_mb_xy-1] )
{
if( mb_interlaced )
{
h->mb.left_index_table = &left_indices[2];
left[1] += h->mb.i_mb_stride;
h->mb.left_b8[1] += 2*h->mb.i_b8_stride;
h->mb.left_b4[1] += 4*h->mb.i_b4_stride;
}
else
h->mb.left_index_table = &left_indices[0];
}
}
}
if( mb_x > 0 )
{
h->mb.i_neighbour_frame |= MB_LEFT;
h->mb.i_mb_left_xy[0] = left[0];
h->mb.i_mb_left_xy[1] = left[1];
h->mb.i_mb_type_left[0] = h->mb.type[h->mb.i_mb_left_xy[0]];
h->mb.i_mb_type_left[1] = h->mb.type[h->mb.i_mb_left_xy[1]];
if( h->mb.slice_table[left[0]] == h->sh.i_first_mb )
{
h->mb.i_neighbour |= MB_LEFT;
// FIXME: We don't currently support constrained intra + mbaff.
if( !h->param.b_constrained_intra || IS_INTRA( h->mb.i_mb_type_left[0] ) )
h->mb.i_neighbour_intra |= MB_LEFT;
}
}
/* We can't predict from the previous threadslice since it hasn't been encoded yet. */
if( (h->i_threadslice_start >> mb_interlaced) != (mb_y >> mb_interlaced) )
{
if( top >= 0 )
{
h->mb.i_neighbour_frame |= MB_TOP;
h->mb.i_mb_top_xy = top;
h->mb.i_mb_top_y = top_y;
h->mb.i_mb_type_top = h->mb.type[h->mb.i_mb_top_xy];
if( h->mb.slice_table[top] == h->sh.i_first_mb )
{
h->mb.i_neighbour |= MB_TOP;
if( !h->param.b_constrained_intra || IS_INTRA( h->mb.i_mb_type_top ) )
h->mb.i_neighbour_intra |= MB_TOP;
/* We only need to prefetch the top blocks because the left was just written
* to as part of the previous cache_save. Since most target CPUs use write-allocate
* caches, left blocks are near-guaranteed to be in L1 cache. Top--not so much. */
x264_prefetch( &h->mb.cbp[top] );
x264_prefetch( h->mb.intra4x4_pred_mode[top] );
x264_prefetch( &h->mb.non_zero_count[top][12] );
/* These aren't always allocated, but prefetching an invalid address can't hurt. */
x264_prefetch( &h->mb.mb_transform_size[top] );
x264_prefetch( &h->mb.skipbp[top] );
}
}
if( mb_x > 0 && topleft_y >= 0 )
{
h->mb.i_neighbour_frame |= MB_TOPLEFT;
h->mb.i_mb_topleft_xy = h->mb.i_mb_stride*topleft_y + mb_x - 1;
h->mb.i_mb_topleft_y = topleft_y;
h->mb.i_mb_type_topleft = h->mb.type[h->mb.i_mb_topleft_xy];
if( h->mb.slice_table[h->mb.i_mb_topleft_xy] == h->sh.i_first_mb )
{
h->mb.i_neighbour |= MB_TOPLEFT;
if( !h->param.b_constrained_intra || IS_INTRA( h->mb.i_mb_type_topleft ) )
h->mb.i_neighbour_intra |= MB_TOPLEFT;
}
}
if( mb_x < h->mb.i_mb_width - 1 && topright_y >= 0 )
{
h->mb.i_neighbour_frame |= MB_TOPRIGHT;
h->mb.i_mb_topright_xy = h->mb.i_mb_stride*topright_y + mb_x + 1;
h->mb.i_mb_topright_y = topright_y;
h->mb.i_mb_type_topright = h->mb.type[h->mb.i_mb_topright_xy];
if( h->mb.slice_table[h->mb.i_mb_topright_xy] == h->sh.i_first_mb )
{
h->mb.i_neighbour |= MB_TOPRIGHT;
if( !h->param.b_constrained_intra || IS_INTRA( h->mb.i_mb_type_topright ) )
h->mb.i_neighbour_intra |= MB_TOPRIGHT;
}
}
}
}
#define LTOP 0
#if HAVE_INTERLACED
# define LBOT 1
#else
# define LBOT 0
#endif
static void ALWAYS_INLINE macroblock_cache_load( x264_t *h, int mb_x, int mb_y, int b_mbaff )
{
macroblock_cache_load_neighbours( h, mb_x, mb_y, b_mbaff );
int *left = h->mb.i_mb_left_xy;
int top = h->mb.i_mb_top_xy;
int top_y = h->mb.i_mb_top_y;
int s8x8 = h->mb.i_b8_stride;
int s4x4 = h->mb.i_b4_stride;
int top_8x8 = (2*top_y+1) * s8x8 + 2*mb_x;
int top_4x4 = (4*top_y+3) * s4x4 + 4*mb_x;
int lists = (1 << h->sh.i_type) & 3;
/* GCC pessimizes direct loads from heap-allocated arrays due to aliasing. */
/* By only dereferencing them once, we avoid this issue. */
int8_t (*i4x4)[8] = h->mb.intra4x4_pred_mode;
uint8_t (*nnz)[48] = h->mb.non_zero_count;
int16_t *cbp = h->mb.cbp;
const x264_left_table_t *left_index_table = h->mb.left_index_table;
h->mb.cache.deblock_strength = h->deblock_strength[mb_y&1][h->param.b_sliced_threads?h->mb.i_mb_xy:mb_x];
/* load cache */
if( h->mb.i_neighbour & MB_TOP )
{
h->mb.cache.i_cbp_top = cbp[top];
/* load intra4x4 */
CP32( &h->mb.cache.intra4x4_pred_mode[x264_scan8[0] - 8], &i4x4[top][0] );
/* load non_zero_count */
CP32( &h->mb.cache.non_zero_count[x264_scan8[ 0] - 8], &nnz[top][12] );
CP32( &h->mb.cache.non_zero_count[x264_scan8[16] - 8], &nnz[top][16-4 + (16>>CHROMA_V_SHIFT)] );
CP32( &h->mb.cache.non_zero_count[x264_scan8[32] - 8], &nnz[top][32-4 + (16>>CHROMA_V_SHIFT)] );
/* Finish the prefetching */
for( int l = 0; l < lists; l++ )
{
x264_prefetch( &h->mb.mv[l][top_4x4-1] );
/* Top right being not in the same cacheline as top left will happen
* once every 4 MBs, so one extra prefetch is worthwhile */
x264_prefetch( &h->mb.mv[l][top_4x4+4] );
x264_prefetch( &h->mb.ref[l][top_8x8-1] );
x264_prefetch( &h->mb.mvd[l][top] );
}
}
else
{
h->mb.cache.i_cbp_top = -1;
/* load intra4x4 */
M32( &h->mb.cache.intra4x4_pred_mode[x264_scan8[0] - 8] ) = 0xFFFFFFFFU;
/* load non_zero_count */
M32( &h->mb.cache.non_zero_count[x264_scan8[ 0] - 8] ) = 0x80808080U;
M32( &h->mb.cache.non_zero_count[x264_scan8[16] - 8] ) = 0x80808080U;
M32( &h->mb.cache.non_zero_count[x264_scan8[32] - 8] ) = 0x80808080U;
}
if( h->mb.i_neighbour & MB_LEFT )
{
int ltop = left[LTOP];
int lbot = b_mbaff ? left[LBOT] : ltop;
if( b_mbaff )
{
const int16_t top_luma = (cbp[ltop] >> (left_index_table->mv[0]&(~1))) & 2;
const int16_t bot_luma = (cbp[lbot] >> (left_index_table->mv[2]&(~1))) & 2;
h->mb.cache.i_cbp_left = (cbp[ltop] & 0xfff0) | (bot_luma<<2) | top_luma;
}
else
h->mb.cache.i_cbp_left = cbp[ltop];
/* load intra4x4 */
h->mb.cache.intra4x4_pred_mode[x264_scan8[ 0] - 1] = i4x4[ltop][left_index_table->intra[0]];
h->mb.cache.intra4x4_pred_mode[x264_scan8[ 2] - 1] = i4x4[ltop][left_index_table->intra[1]];
h->mb.cache.intra4x4_pred_mode[x264_scan8[ 8] - 1] = i4x4[lbot][left_index_table->intra[2]];
h->mb.cache.intra4x4_pred_mode[x264_scan8[10] - 1] = i4x4[lbot][left_index_table->intra[3]];
/* load non_zero_count */
h->mb.cache.non_zero_count[x264_scan8[ 0] - 1] = nnz[ltop][left_index_table->nnz[0]];
h->mb.cache.non_zero_count[x264_scan8[ 2] - 1] = nnz[ltop][left_index_table->nnz[1]];
h->mb.cache.non_zero_count[x264_scan8[ 8] - 1] = nnz[lbot][left_index_table->nnz[2]];
h->mb.cache.non_zero_count[x264_scan8[10] - 1] = nnz[lbot][left_index_table->nnz[3]];
if( CHROMA_FORMAT >= CHROMA_422 )
{
int offset = (4>>CHROMA_H_SHIFT) - 4;
h->mb.cache.non_zero_count[x264_scan8[16+ 0] - 1] = nnz[ltop][left_index_table->nnz[0]+16+offset];
h->mb.cache.non_zero_count[x264_scan8[16+ 2] - 1] = nnz[ltop][left_index_table->nnz[1]+16+offset];
h->mb.cache.non_zero_count[x264_scan8[16+ 8] - 1] = nnz[lbot][left_index_table->nnz[2]+16+offset];
h->mb.cache.non_zero_count[x264_scan8[16+10] - 1] = nnz[lbot][left_index_table->nnz[3]+16+offset];
h->mb.cache.non_zero_count[x264_scan8[32+ 0] - 1] = nnz[ltop][left_index_table->nnz[0]+32+offset];
h->mb.cache.non_zero_count[x264_scan8[32+ 2] - 1] = nnz[ltop][left_index_table->nnz[1]+32+offset];
h->mb.cache.non_zero_count[x264_scan8[32+ 8] - 1] = nnz[lbot][left_index_table->nnz[2]+32+offset];
h->mb.cache.non_zero_count[x264_scan8[32+10] - 1] = nnz[lbot][left_index_table->nnz[3]+32+offset];
}
else
{
h->mb.cache.non_zero_count[x264_scan8[16+ 0] - 1] = nnz[ltop][left_index_table->nnz_chroma[0]];
h->mb.cache.non_zero_count[x264_scan8[16+ 2] - 1] = nnz[lbot][left_index_table->nnz_chroma[1]];
h->mb.cache.non_zero_count[x264_scan8[32+ 0] - 1] = nnz[ltop][left_index_table->nnz_chroma[2]];
h->mb.cache.non_zero_count[x264_scan8[32+ 2] - 1] = nnz[lbot][left_index_table->nnz_chroma[3]];
}
}
else
{
h->mb.cache.i_cbp_left = -1;
h->mb.cache.intra4x4_pred_mode[x264_scan8[ 0] - 1] =
h->mb.cache.intra4x4_pred_mode[x264_scan8[ 2] - 1] =
h->mb.cache.intra4x4_pred_mode[x264_scan8[ 8] - 1] =
h->mb.cache.intra4x4_pred_mode[x264_scan8[10] - 1] = -1;
/* load non_zero_count */
h->mb.cache.non_zero_count[x264_scan8[ 0] - 1] =
h->mb.cache.non_zero_count[x264_scan8[ 2] - 1] =
h->mb.cache.non_zero_count[x264_scan8[ 8] - 1] =
h->mb.cache.non_zero_count[x264_scan8[10] - 1] =
h->mb.cache.non_zero_count[x264_scan8[16+ 0] - 1] =
h->mb.cache.non_zero_count[x264_scan8[16+ 2] - 1] =
h->mb.cache.non_zero_count[x264_scan8[32+ 0] - 1] =
h->mb.cache.non_zero_count[x264_scan8[32+ 2] - 1] = 0x80;
if( CHROMA_FORMAT >= CHROMA_422 )
{
h->mb.cache.non_zero_count[x264_scan8[16+ 8] - 1] =
h->mb.cache.non_zero_count[x264_scan8[16+10] - 1] =
h->mb.cache.non_zero_count[x264_scan8[32+ 8] - 1] =
h->mb.cache.non_zero_count[x264_scan8[32+10] - 1] = 0x80;
}
}
if( h->pps->b_transform_8x8_mode )
{
h->mb.cache.i_neighbour_transform_size =
( (h->mb.i_neighbour & MB_LEFT) && h->mb.mb_transform_size[left[0]] )
+ ( (h->mb.i_neighbour & MB_TOP) && h->mb.mb_transform_size[top] );
}
if( b_mbaff )
{
h->mb.pic.i_fref[0] = h->i_ref[0] << MB_INTERLACED;
h->mb.pic.i_fref[1] = h->i_ref[1] << MB_INTERLACED;
}
if( !b_mbaff )
{
x264_copy_column8( h->mb.pic.p_fdec[0]-1+ 4*FDEC_STRIDE, h->mb.pic.p_fdec[0]+15+ 4*FDEC_STRIDE );