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pixel.c
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/*****************************************************************************
* pixel.c: pixel metrics
*****************************************************************************
* Copyright (C) 2003-2014 x264 project
*
* Authors: Loren Merritt <[email protected]>
* Laurent Aimar <[email protected]>
* Jason Garrett-Glaser <[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.h"
#if HAVE_MMX
# include "x86/pixel.h"
# include "x86/predict.h"
#endif
#if ARCH_PPC
# include "ppc/pixel.h"
#endif
#if ARCH_ARM
# include "arm/pixel.h"
# include "arm/predict.h"
#endif
#if ARCH_UltraSPARC
# include "sparc/pixel.h"
#endif
/****************************************************************************
* pixel_sad_WxH
****************************************************************************/
#define PIXEL_SAD_C( name, lx, ly ) \
static int name( pixel *pix1, intptr_t i_stride_pix1, \
pixel *pix2, intptr_t i_stride_pix2 ) \
{ \
int i_sum = 0; \
for( int y = 0; y < ly; y++ ) \
{ \
for( int x = 0; x < lx; x++ ) \
{ \
i_sum += abs( pix1[x] - pix2[x] ); \
} \
pix1 += i_stride_pix1; \
pix2 += i_stride_pix2; \
} \
return i_sum; \
}
PIXEL_SAD_C( x264_pixel_sad_16x16, 16, 16 )
PIXEL_SAD_C( x264_pixel_sad_16x8, 16, 8 )
PIXEL_SAD_C( x264_pixel_sad_8x16, 8, 16 )
PIXEL_SAD_C( x264_pixel_sad_8x8, 8, 8 )
PIXEL_SAD_C( x264_pixel_sad_8x4, 8, 4 )
PIXEL_SAD_C( x264_pixel_sad_4x16, 4, 16 )
PIXEL_SAD_C( x264_pixel_sad_4x8, 4, 8 )
PIXEL_SAD_C( x264_pixel_sad_4x4, 4, 4 )
/****************************************************************************
* pixel_ssd_WxH
****************************************************************************/
#define PIXEL_SSD_C( name, lx, ly ) \
static int name( pixel *pix1, intptr_t i_stride_pix1, \
pixel *pix2, intptr_t i_stride_pix2 ) \
{ \
int i_sum = 0; \
for( int y = 0; y < ly; y++ ) \
{ \
for( int x = 0; x < lx; x++ ) \
{ \
int d = pix1[x] - pix2[x]; \
i_sum += d*d; \
} \
pix1 += i_stride_pix1; \
pix2 += i_stride_pix2; \
} \
return i_sum; \
}
PIXEL_SSD_C( x264_pixel_ssd_16x16, 16, 16 )
PIXEL_SSD_C( x264_pixel_ssd_16x8, 16, 8 )
PIXEL_SSD_C( x264_pixel_ssd_8x16, 8, 16 )
PIXEL_SSD_C( x264_pixel_ssd_8x8, 8, 8 )
PIXEL_SSD_C( x264_pixel_ssd_8x4, 8, 4 )
PIXEL_SSD_C( x264_pixel_ssd_4x16, 4, 16 )
PIXEL_SSD_C( x264_pixel_ssd_4x8, 4, 8 )
PIXEL_SSD_C( x264_pixel_ssd_4x4, 4, 4 )
uint64_t x264_pixel_ssd_wxh( x264_pixel_function_t *pf, pixel *pix1, intptr_t i_pix1,
pixel *pix2, intptr_t i_pix2, int i_width, int i_height )
{
uint64_t i_ssd = 0;
int y;
int align = !(((intptr_t)pix1 | (intptr_t)pix2 | i_pix1 | i_pix2) & 15);
#define SSD(size) i_ssd += pf->ssd[size]( pix1 + y*i_pix1 + x, i_pix1, \
pix2 + y*i_pix2 + x, i_pix2 );
for( y = 0; y < i_height-15; y += 16 )
{
int x = 0;
if( align )
for( ; x < i_width-15; x += 16 )
SSD(PIXEL_16x16);
for( ; x < i_width-7; x += 8 )
SSD(PIXEL_8x16);
}
if( y < i_height-7 )
for( int x = 0; x < i_width-7; x += 8 )
SSD(PIXEL_8x8);
#undef SSD
#define SSD1 { int d = pix1[y*i_pix1+x] - pix2[y*i_pix2+x]; i_ssd += d*d; }
if( i_width & 7 )
{
for( y = 0; y < (i_height & ~7); y++ )
for( int x = i_width & ~7; x < i_width; x++ )
SSD1;
}
if( i_height & 7 )
{
for( y = i_height & ~7; y < i_height; y++ )
for( int x = 0; x < i_width; x++ )
SSD1;
}
#undef SSD1
return i_ssd;
}
static void pixel_ssd_nv12_core( pixel *pixuv1, intptr_t stride1, pixel *pixuv2, intptr_t stride2,
int width, int height, uint64_t *ssd_u, uint64_t *ssd_v )
{
*ssd_u = 0, *ssd_v = 0;
for( int y = 0; y < height; y++, pixuv1+=stride1, pixuv2+=stride2 )
for( int x = 0; x < width; x++ )
{
int du = pixuv1[2*x] - pixuv2[2*x];
int dv = pixuv1[2*x+1] - pixuv2[2*x+1];
*ssd_u += du*du;
*ssd_v += dv*dv;
}
}
void x264_pixel_ssd_nv12( x264_pixel_function_t *pf, pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2,
int i_width, int i_height, uint64_t *ssd_u, uint64_t *ssd_v )
{
pf->ssd_nv12_core( pix1, i_pix1, pix2, i_pix2, i_width&~7, i_height, ssd_u, ssd_v );
if( i_width&7 )
{
uint64_t tmp[2];
pixel_ssd_nv12_core( pix1+(i_width&~7), i_pix1, pix2+(i_width&~7), i_pix2, i_width&7, i_height, &tmp[0], &tmp[1] );
*ssd_u += tmp[0];
*ssd_v += tmp[1];
}
}
/****************************************************************************
* pixel_var_wxh
****************************************************************************/
#define PIXEL_VAR_C( name, w, h ) \
static uint64_t name( pixel *pix, intptr_t i_stride ) \
{ \
uint32_t sum = 0, sqr = 0; \
for( int y = 0; y < h; y++ ) \
{ \
for( int x = 0; x < w; x++ ) \
{ \
sum += pix[x]; \
sqr += pix[x] * pix[x]; \
} \
pix += i_stride; \
} \
return sum + ((uint64_t)sqr << 32); \
}
PIXEL_VAR_C( x264_pixel_var_16x16, 16, 16 )
PIXEL_VAR_C( x264_pixel_var_8x16, 8, 16 )
PIXEL_VAR_C( x264_pixel_var_8x8, 8, 8 )
/****************************************************************************
* pixel_var2_wxh
****************************************************************************/
#define PIXEL_VAR2_C( name, w, h, shift ) \
static int name( pixel *pix1, intptr_t i_stride1, pixel *pix2, intptr_t i_stride2, int *ssd ) \
{ \
uint32_t var = 0, sum = 0, sqr = 0; \
for( int y = 0; y < h; y++ ) \
{ \
for( int x = 0; x < w; x++ ) \
{ \
int diff = pix1[x] - pix2[x]; \
sum += diff; \
sqr += diff * diff; \
} \
pix1 += i_stride1; \
pix2 += i_stride2; \
} \
sum = abs(sum); \
var = sqr - ((uint64_t)sum * sum >> shift); \
*ssd = sqr; \
return var; \
}
PIXEL_VAR2_C( x264_pixel_var2_8x16, 8, 16, 7 )
PIXEL_VAR2_C( x264_pixel_var2_8x8, 8, 8, 6 )
#if BIT_DEPTH > 8
typedef uint32_t sum_t;
typedef uint64_t sum2_t;
#else
typedef uint16_t sum_t;
typedef uint32_t sum2_t;
#endif
#define BITS_PER_SUM (8 * sizeof(sum_t))
#define HADAMARD4(d0, d1, d2, d3, s0, s1, s2, s3) {\
sum2_t t0 = s0 + s1;\
sum2_t t1 = s0 - s1;\
sum2_t t2 = s2 + s3;\
sum2_t t3 = s2 - s3;\
d0 = t0 + t2;\
d2 = t0 - t2;\
d1 = t1 + t3;\
d3 = t1 - t3;\
}
// in: a pseudo-simd number of the form x+(y<<16)
// return: abs(x)+(abs(y)<<16)
static ALWAYS_INLINE sum2_t abs2( sum2_t a )
{
sum2_t s = ((a>>(BITS_PER_SUM-1))&(((sum2_t)1<<BITS_PER_SUM)+1))*((sum_t)-1);
return (a+s)^s;
}
/****************************************************************************
* pixel_satd_WxH: sum of 4x4 Hadamard transformed differences
****************************************************************************/
static NOINLINE int x264_pixel_satd_4x4( pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2 )
{
sum2_t tmp[4][2];
sum2_t a0, a1, a2, a3, b0, b1;
sum2_t sum = 0;
for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
{
a0 = pix1[0] - pix2[0];
a1 = pix1[1] - pix2[1];
b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
a2 = pix1[2] - pix2[2];
a3 = pix1[3] - pix2[3];
b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
tmp[i][0] = b0 + b1;
tmp[i][1] = b0 - b1;
}
for( int i = 0; i < 2; i++ )
{
HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
a0 = abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
sum += ((sum_t)a0) + (a0>>BITS_PER_SUM);
}
return sum >> 1;
}
static NOINLINE int x264_pixel_satd_8x4( pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2 )
{
sum2_t tmp[4][4];
sum2_t a0, a1, a2, a3;
sum2_t sum = 0;
for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
{
a0 = (pix1[0] - pix2[0]) + ((sum2_t)(pix1[4] - pix2[4]) << BITS_PER_SUM);
a1 = (pix1[1] - pix2[1]) + ((sum2_t)(pix1[5] - pix2[5]) << BITS_PER_SUM);
a2 = (pix1[2] - pix2[2]) + ((sum2_t)(pix1[6] - pix2[6]) << BITS_PER_SUM);
a3 = (pix1[3] - pix2[3]) + ((sum2_t)(pix1[7] - pix2[7]) << BITS_PER_SUM);
HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], a0,a1,a2,a3 );
}
for( int i = 0; i < 4; i++ )
{
HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
sum += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
}
return (((sum_t)sum) + (sum>>BITS_PER_SUM)) >> 1;
}
#define PIXEL_SATD_C( w, h, sub )\
static int x264_pixel_satd_##w##x##h( pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2 )\
{\
int sum = sub( pix1, i_pix1, pix2, i_pix2 )\
+ sub( pix1+4*i_pix1, i_pix1, pix2+4*i_pix2, i_pix2 );\
if( w==16 )\
sum+= sub( pix1+8, i_pix1, pix2+8, i_pix2 )\
+ sub( pix1+8+4*i_pix1, i_pix1, pix2+8+4*i_pix2, i_pix2 );\
if( h==16 )\
sum+= sub( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )\
+ sub( pix1+12*i_pix1, i_pix1, pix2+12*i_pix2, i_pix2 );\
if( w==16 && h==16 )\
sum+= sub( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 )\
+ sub( pix1+8+12*i_pix1, i_pix1, pix2+8+12*i_pix2, i_pix2 );\
return sum;\
}
PIXEL_SATD_C( 16, 16, x264_pixel_satd_8x4 )
PIXEL_SATD_C( 16, 8, x264_pixel_satd_8x4 )
PIXEL_SATD_C( 8, 16, x264_pixel_satd_8x4 )
PIXEL_SATD_C( 8, 8, x264_pixel_satd_8x4 )
PIXEL_SATD_C( 4, 16, x264_pixel_satd_4x4 )
PIXEL_SATD_C( 4, 8, x264_pixel_satd_4x4 )
static NOINLINE int sa8d_8x8( pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2 )
{
sum2_t tmp[8][4];
sum2_t a0, a1, a2, a3, a4, a5, a6, a7, b0, b1, b2, b3;
sum2_t sum = 0;
for( int i = 0; i < 8; i++, pix1 += i_pix1, pix2 += i_pix2 )
{
a0 = pix1[0] - pix2[0];
a1 = pix1[1] - pix2[1];
b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
a2 = pix1[2] - pix2[2];
a3 = pix1[3] - pix2[3];
b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
a4 = pix1[4] - pix2[4];
a5 = pix1[5] - pix2[5];
b2 = (a4+a5) + ((a4-a5)<<BITS_PER_SUM);
a6 = pix1[6] - pix2[6];
a7 = pix1[7] - pix2[7];
b3 = (a6+a7) + ((a6-a7)<<BITS_PER_SUM);
HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], b0,b1,b2,b3 );
}
for( int i = 0; i < 4; i++ )
{
HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
HADAMARD4( a4, a5, a6, a7, tmp[4][i], tmp[5][i], tmp[6][i], tmp[7][i] );
b0 = abs2(a0+a4) + abs2(a0-a4);
b0 += abs2(a1+a5) + abs2(a1-a5);
b0 += abs2(a2+a6) + abs2(a2-a6);
b0 += abs2(a3+a7) + abs2(a3-a7);
sum += (sum_t)b0 + (b0>>BITS_PER_SUM);
}
return sum;
}
static int x264_pixel_sa8d_8x8( pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2 )
{
int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 );
return (sum+2)>>2;
}
static int x264_pixel_sa8d_16x16( pixel *pix1, intptr_t i_pix1, pixel *pix2, intptr_t i_pix2 )
{
int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 )
+ sa8d_8x8( pix1+8, i_pix1, pix2+8, i_pix2 )
+ sa8d_8x8( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )
+ sa8d_8x8( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 );
return (sum+2)>>2;
}
static NOINLINE uint64_t pixel_hadamard_ac( pixel *pix, intptr_t stride )
{
sum2_t tmp[32];
sum2_t a0, a1, a2, a3, dc;
sum2_t sum4 = 0, sum8 = 0;
for( int i = 0; i < 8; i++, pix+=stride )
{
sum2_t *t = tmp + (i&3) + (i&4)*4;
a0 = (pix[0]+pix[1]) + ((sum2_t)(pix[0]-pix[1])<<BITS_PER_SUM);
a1 = (pix[2]+pix[3]) + ((sum2_t)(pix[2]-pix[3])<<BITS_PER_SUM);
t[0] = a0 + a1;
t[4] = a0 - a1;
a2 = (pix[4]+pix[5]) + ((sum2_t)(pix[4]-pix[5])<<BITS_PER_SUM);
a3 = (pix[6]+pix[7]) + ((sum2_t)(pix[6]-pix[7])<<BITS_PER_SUM);
t[8] = a2 + a3;
t[12] = a2 - a3;
}
for( int i = 0; i < 8; i++ )
{
HADAMARD4( a0, a1, a2, a3, tmp[i*4+0], tmp[i*4+1], tmp[i*4+2], tmp[i*4+3] );
tmp[i*4+0] = a0;
tmp[i*4+1] = a1;
tmp[i*4+2] = a2;
tmp[i*4+3] = a3;
sum4 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
}
for( int i = 0; i < 8; i++ )
{
HADAMARD4( a0,a1,a2,a3, tmp[i], tmp[8+i], tmp[16+i], tmp[24+i] );
sum8 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
}
dc = (sum_t)(tmp[0] + tmp[8] + tmp[16] + tmp[24]);
sum4 = (sum_t)sum4 + (sum4>>BITS_PER_SUM) - dc;
sum8 = (sum_t)sum8 + (sum8>>BITS_PER_SUM) - dc;
return ((uint64_t)sum8<<32) + sum4;
}
#define HADAMARD_AC(w,h) \
static uint64_t x264_pixel_hadamard_ac_##w##x##h( pixel *pix, intptr_t stride )\
{\
uint64_t sum = pixel_hadamard_ac( pix, stride );\
if( w==16 )\
sum += pixel_hadamard_ac( pix+8, stride );\
if( h==16 )\
sum += pixel_hadamard_ac( pix+8*stride, stride );\
if( w==16 && h==16 )\
sum += pixel_hadamard_ac( pix+8*stride+8, stride );\
return ((sum>>34)<<32) + ((uint32_t)sum>>1);\
}
HADAMARD_AC( 16, 16 )
HADAMARD_AC( 16, 8 )
HADAMARD_AC( 8, 16 )
HADAMARD_AC( 8, 8 )
/****************************************************************************
* pixel_sad_x4
****************************************************************************/
#define SAD_X( size ) \
static void x264_pixel_sad_x3_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2,\
intptr_t i_stride, int scores[3] )\
{\
scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
}\
static void x264_pixel_sad_x4_##size( pixel *fenc, pixel *pix0, pixel *pix1,pixel *pix2, pixel *pix3,\
intptr_t i_stride, int scores[4] )\
{\
scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
scores[3] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix3, i_stride );\
}
SAD_X( 16x16 )
SAD_X( 16x8 )
SAD_X( 8x16 )
SAD_X( 8x8 )
SAD_X( 8x4 )
SAD_X( 4x8 )
SAD_X( 4x4 )
#if !HIGH_BIT_DEPTH
#if ARCH_UltraSPARC
SAD_X( 16x16_vis )
SAD_X( 16x8_vis )
SAD_X( 8x16_vis )
SAD_X( 8x8_vis )
#endif
#endif // !HIGH_BIT_DEPTH
/****************************************************************************
* pixel_satd_x4
* no faster than single satd, but needed for satd to be a drop-in replacement for sad
****************************************************************************/
#define SATD_X( size, cpu ) \
static void x264_pixel_satd_x3_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2,\
intptr_t i_stride, int scores[3] )\
{\
scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
}\
static void x264_pixel_satd_x4_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3,\
intptr_t i_stride, int scores[4] )\
{\
scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
scores[3] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix3, i_stride );\
}
#define SATD_X_DECL6( cpu )\
SATD_X( 16x16, cpu )\
SATD_X( 16x8, cpu )\
SATD_X( 8x16, cpu )\
SATD_X( 8x8, cpu )\
SATD_X( 8x4, cpu )\
SATD_X( 4x8, cpu )
#define SATD_X_DECL7( cpu )\
SATD_X_DECL6( cpu )\
SATD_X( 4x4, cpu )
SATD_X_DECL7()
#if HAVE_MMX
SATD_X_DECL7( _mmx2 )
#if !HIGH_BIT_DEPTH
SATD_X_DECL6( _sse2 )
SATD_X_DECL7( _ssse3 )
SATD_X_DECL6( _ssse3_atom )
SATD_X_DECL7( _sse4 )
SATD_X_DECL7( _avx )
SATD_X_DECL7( _xop )
#endif // !HIGH_BIT_DEPTH
#endif
#if !HIGH_BIT_DEPTH
#if HAVE_ARMV6
SATD_X_DECL7( _neon )
#endif
#endif // !HIGH_BIT_DEPTH
#define INTRA_MBCMP_8x8( mbcmp, cpu, cpu2 )\
void x264_intra_##mbcmp##_x3_8x8##cpu( pixel *fenc, pixel edge[36], int res[3] )\
{\
ALIGNED_ARRAY_16( pixel, pix, [8*FDEC_STRIDE] );\
x264_predict_8x8_v##cpu2( pix, edge );\
res[0] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
x264_predict_8x8_h##cpu2( pix, edge );\
res[1] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
x264_predict_8x8_dc##cpu2( pix, edge );\
res[2] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
}
INTRA_MBCMP_8x8( sad,, _c )
INTRA_MBCMP_8x8(sa8d,, _c )
#if HIGH_BIT_DEPTH && HAVE_MMX
#define x264_predict_8x8_v_sse2 x264_predict_8x8_v_sse
INTRA_MBCMP_8x8( sad, _mmx2, _c )
INTRA_MBCMP_8x8(sa8d, _sse2, _sse2 )
#endif
#if !HIGH_BIT_DEPTH && HAVE_ARMV6
INTRA_MBCMP_8x8( sad, _neon, _neon )
INTRA_MBCMP_8x8(sa8d, _neon, _neon )
#endif
#define INTRA_MBCMP( mbcmp, size, pred1, pred2, pred3, chroma, cpu, cpu2 )\
void x264_intra_##mbcmp##_x3_##size##chroma##cpu( pixel *fenc, pixel *fdec, int res[3] )\
{\
x264_predict_##size##chroma##_##pred1##cpu2( fdec );\
res[0] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
x264_predict_##size##chroma##_##pred2##cpu2( fdec );\
res[1] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
x264_predict_##size##chroma##_##pred3##cpu2( fdec );\
res[2] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
}
INTRA_MBCMP( sad, 4x4, v, h, dc, ,, _c )
INTRA_MBCMP(satd, 4x4, v, h, dc, ,, _c )
INTRA_MBCMP( sad, 8x8, dc, h, v, c,, _c )
INTRA_MBCMP(satd, 8x8, dc, h, v, c,, _c )
INTRA_MBCMP( sad, 8x16, dc, h, v, c,, _c )
INTRA_MBCMP(satd, 8x16, dc, h, v, c,, _c )
INTRA_MBCMP( sad, 16x16, v, h, dc, ,, _c )
INTRA_MBCMP(satd, 16x16, v, h, dc, ,, _c )
#if HAVE_MMX
#if HIGH_BIT_DEPTH
#define x264_predict_8x8c_v_mmx2 x264_predict_8x8c_v_mmx
#define x264_predict_8x16c_v_mmx2 x264_predict_8x16c_v_c
#define x264_predict_8x8c_v_sse2 x264_predict_8x8c_v_sse
#define x264_predict_8x16c_v_sse2 x264_predict_8x16c_v_sse
#define x264_predict_16x16_v_sse2 x264_predict_16x16_v_sse
INTRA_MBCMP( sad, 4x4, v, h, dc, , _mmx2, _c )
INTRA_MBCMP( sad, 8x8, dc, h, v, c, _mmx2, _mmx2 )
INTRA_MBCMP( sad, 8x16, dc, h, v, c, _mmx2, _mmx2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _mmx2, _mmx2 )
INTRA_MBCMP( sad, 16x16, v, h, dc, , _mmx2, _mmx2 )
INTRA_MBCMP( sad, 8x8, dc, h, v, c, _sse2, _sse2 )
INTRA_MBCMP( sad, 8x16, dc, h, v, c, _sse2, _sse2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _sse2, _sse2 )
INTRA_MBCMP( sad, 16x16, v, h, dc, , _sse2, _sse2 )
INTRA_MBCMP( sad, 8x8, dc, h, v, c, _ssse3, _sse2 )
INTRA_MBCMP( sad, 8x16, dc, h, v, c, _ssse3, _sse2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _ssse3, _sse2 )
INTRA_MBCMP( sad, 16x16, v, h, dc, , _ssse3, _sse2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _sse4, _sse2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _avx, _sse2 )
#else
#define x264_predict_8x16c_v_mmx2 x264_predict_8x16c_v_mmx
INTRA_MBCMP( sad, 8x16, dc, h, v, c, _mmx2, _mmx2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _mmx2, _mmx2 )
INTRA_MBCMP( sad, 8x16, dc, h, v, c, _sse2, _mmx2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _sse2, _mmx2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _ssse3, _mmx2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _sse4, _mmx2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _avx, _mmx2 )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _xop, _mmx2 )
#endif
#endif
#if !HIGH_BIT_DEPTH && HAVE_ARMV6
INTRA_MBCMP( sad, 4x4, v, h, dc, , _neon, _c )
INTRA_MBCMP(satd, 4x4, v, h, dc, , _neon, _c )
INTRA_MBCMP( sad, 8x8, dc, h, v, c, _neon, _neon )
INTRA_MBCMP(satd, 8x8, dc, h, v, c, _neon, _neon )
INTRA_MBCMP( sad, 8x16, dc, h, v, c, _neon, _c )
INTRA_MBCMP(satd, 8x16, dc, h, v, c, _neon, _c )
INTRA_MBCMP( sad, 16x16, v, h, dc, , _neon, _neon )
INTRA_MBCMP(satd, 16x16, v, h, dc, , _neon, _neon )
#endif
// No C implementation of intra_satd_x9. See checkasm for its behavior,
// or see x264_mb_analyse_intra for the entirely different algorithm we
// use when lacking an asm implementation of it.
/****************************************************************************
* structural similarity metric
****************************************************************************/
static void ssim_4x4x2_core( const pixel *pix1, intptr_t stride1,
const pixel *pix2, intptr_t stride2,
int sums[2][4] )
{
for( int z = 0; z < 2; z++ )
{
uint32_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
for( int y = 0; y < 4; y++ )
for( int x = 0; x < 4; x++ )
{
int a = pix1[x+y*stride1];
int b = pix2[x+y*stride2];
s1 += a;
s2 += b;
ss += a*a;
ss += b*b;
s12 += a*b;
}
sums[z][0] = s1;
sums[z][1] = s2;
sums[z][2] = ss;
sums[z][3] = s12;
pix1 += 4;
pix2 += 4;
}
}
static float ssim_end1( int s1, int s2, int ss, int s12 )
{
/* Maximum value for 10-bit is: ss*64 = (2^10-1)^2*16*4*64 = 4286582784, which will overflow in some cases.
* s1*s1, s2*s2, and s1*s2 also obtain this value for edge cases: ((2^10-1)*16*4)^2 = 4286582784.
* Maximum value for 9-bit is: ss*64 = (2^9-1)^2*16*4*64 = 1069551616, which will not overflow. */
#if BIT_DEPTH > 9
#define type float
static const float ssim_c1 = .01*.01*PIXEL_MAX*PIXEL_MAX*64;
static const float ssim_c2 = .03*.03*PIXEL_MAX*PIXEL_MAX*64*63;
#else
#define type int
static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64 + .5);
static const int ssim_c2 = (int)(.03*.03*PIXEL_MAX*PIXEL_MAX*64*63 + .5);
#endif
type fs1 = s1;
type fs2 = s2;
type fss = ss;
type fs12 = s12;
type vars = fss*64 - fs1*fs1 - fs2*fs2;
type covar = fs12*64 - fs1*fs2;
return (float)(2*fs1*fs2 + ssim_c1) * (float)(2*covar + ssim_c2)
/ ((float)(fs1*fs1 + fs2*fs2 + ssim_c1) * (float)(vars + ssim_c2));
#undef type
}
static float ssim_end4( int sum0[5][4], int sum1[5][4], int width )
{
float ssim = 0.0;
for( int i = 0; i < width; i++ )
ssim += ssim_end1( sum0[i][0] + sum0[i+1][0] + sum1[i][0] + sum1[i+1][0],
sum0[i][1] + sum0[i+1][1] + sum1[i][1] + sum1[i+1][1],
sum0[i][2] + sum0[i+1][2] + sum1[i][2] + sum1[i+1][2],
sum0[i][3] + sum0[i+1][3] + sum1[i][3] + sum1[i+1][3] );
return ssim;
}
float x264_pixel_ssim_wxh( x264_pixel_function_t *pf,
pixel *pix1, intptr_t stride1,
pixel *pix2, intptr_t stride2,
int width, int height, void *buf, int *cnt )
{
int z = 0;
float ssim = 0.0;
int (*sum0)[4] = buf;
int (*sum1)[4] = sum0 + (width >> 2) + 3;
width >>= 2;
height >>= 2;
for( int y = 1; y < height; y++ )
{
for( ; z <= y; z++ )
{
XCHG( void*, sum0, sum1 );
for( int x = 0; x < width; x+=2 )
pf->ssim_4x4x2_core( &pix1[4*(x+z*stride1)], stride1, &pix2[4*(x+z*stride2)], stride2, &sum0[x] );
}
for( int x = 0; x < width-1; x += 4 )
ssim += pf->ssim_end4( sum0+x, sum1+x, X264_MIN(4,width-x-1) );
}
*cnt = (height-1) * (width-1);
return ssim;
}
static int pixel_vsad( pixel *src, intptr_t stride, int height )
{
int score = 0;
for( int i = 1; i < height; i++, src += stride )
for( int j = 0; j < 16; j++ )
score += abs(src[j] - src[j+stride]);
return score;
}
int x264_field_vsad( x264_t *h, int mb_x, int mb_y )
{
int score_field, score_frame;
int stride = h->fenc->i_stride[0];
int mb_stride = h->mb.i_mb_stride;
pixel *fenc = h->fenc->plane[0] + 16 * (mb_x + mb_y * stride);
int mb_xy = mb_x + mb_y*mb_stride;
/* We don't want to analyze pixels outside the frame, as it gives inaccurate results. */
int mbpair_height = X264_MIN( h->param.i_height - mb_y * 16, MPEG2 ? 16 : 32 );
score_frame = h->pixf.vsad( fenc, stride, mbpair_height );
score_field = h->pixf.vsad( fenc, stride*2, mbpair_height >> 1 );
score_field += h->pixf.vsad( fenc+stride, stride*2, mbpair_height >> 1 );
if( mb_x > 0 )
score_field += 512 - h->mb.field[mb_xy -1]*1024;
if( mb_y > 0 )
score_field += 512 - h->mb.field[mb_xy-mb_stride]*1024;
return (score_field < score_frame);
}
static int pixel_asd8( pixel *pix1, intptr_t stride1, pixel *pix2, intptr_t stride2, int height )
{
int sum = 0;
for( int y = 0; y < height; y++, pix1 += stride1, pix2 += stride2 )
for( int x = 0; x < 8; x++ )
sum += pix1[x] - pix2[x];
return abs( sum );
}
/****************************************************************************
* successive elimination
****************************************************************************/
static int x264_pixel_ads4( int enc_dc[4], uint16_t *sums, int delta,
uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
{
int nmv = 0;
for( int i = 0; i < width; i++, sums++ )
{
int ads = abs( enc_dc[0] - sums[0] )
+ abs( enc_dc[1] - sums[8] )
+ abs( enc_dc[2] - sums[delta] )
+ abs( enc_dc[3] - sums[delta+8] )
+ cost_mvx[i];
if( ads < thresh )
mvs[nmv++] = i;
}
return nmv;
}
static int x264_pixel_ads2( int enc_dc[2], uint16_t *sums, int delta,
uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
{
int nmv = 0;
for( int i = 0; i < width; i++, sums++ )
{
int ads = abs( enc_dc[0] - sums[0] )
+ abs( enc_dc[1] - sums[delta] )
+ cost_mvx[i];
if( ads < thresh )
mvs[nmv++] = i;
}
return nmv;
}
static int x264_pixel_ads1( int enc_dc[1], uint16_t *sums, int delta,
uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
{
int nmv = 0;
for( int i = 0; i<width; i++, sums++ )
{
int ads = abs( enc_dc[0] - sums[0] )
+ cost_mvx[i];
if( ads < thresh )
mvs[nmv++] = i;
}
return nmv;
}
/****************************************************************************
* x264_pixel_init:
****************************************************************************/
void x264_pixel_init( int cpu, x264_pixel_function_t *pixf )
{
memset( pixf, 0, sizeof(*pixf) );
#define INIT2_NAME( name1, name2, cpu ) \
pixf->name1[PIXEL_16x16] = x264_pixel_##name2##_16x16##cpu;\
pixf->name1[PIXEL_16x8] = x264_pixel_##name2##_16x8##cpu;
#define INIT4_NAME( name1, name2, cpu ) \
INIT2_NAME( name1, name2, cpu ) \
pixf->name1[PIXEL_8x16] = x264_pixel_##name2##_8x16##cpu;\
pixf->name1[PIXEL_8x8] = x264_pixel_##name2##_8x8##cpu;
#define INIT5_NAME( name1, name2, cpu ) \
INIT4_NAME( name1, name2, cpu ) \
pixf->name1[PIXEL_8x4] = x264_pixel_##name2##_8x4##cpu;
#define INIT6_NAME( name1, name2, cpu ) \
INIT5_NAME( name1, name2, cpu ) \
pixf->name1[PIXEL_4x8] = x264_pixel_##name2##_4x8##cpu;
#define INIT7_NAME( name1, name2, cpu ) \
INIT6_NAME( name1, name2, cpu ) \
pixf->name1[PIXEL_4x4] = x264_pixel_##name2##_4x4##cpu;
#define INIT8_NAME( name1, name2, cpu ) \
INIT7_NAME( name1, name2, cpu ) \
pixf->name1[PIXEL_4x16] = x264_pixel_##name2##_4x16##cpu;
#define INIT2( name, cpu ) INIT2_NAME( name, name, cpu )
#define INIT4( name, cpu ) INIT4_NAME( name, name, cpu )
#define INIT5( name, cpu ) INIT5_NAME( name, name, cpu )
#define INIT6( name, cpu ) INIT6_NAME( name, name, cpu )
#define INIT7( name, cpu ) INIT7_NAME( name, name, cpu )
#define INIT8( name, cpu ) INIT8_NAME( name, name, cpu )
#define INIT_ADS( cpu ) \
pixf->ads[PIXEL_16x16] = x264_pixel_ads4##cpu;\
pixf->ads[PIXEL_16x8] = x264_pixel_ads2##cpu;\
pixf->ads[PIXEL_8x8] = x264_pixel_ads1##cpu;
INIT8( sad, );
INIT8_NAME( sad_aligned, sad, );
INIT7( sad_x3, );
INIT7( sad_x4, );
INIT8( ssd, );
INIT8( satd, );
INIT7( satd_x3, );
INIT7( satd_x4, );
INIT4( hadamard_ac, );
INIT_ADS( );
pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16;
pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8;
pixf->var[PIXEL_16x16] = x264_pixel_var_16x16;
pixf->var[PIXEL_8x16] = x264_pixel_var_8x16;
pixf->var[PIXEL_8x8] = x264_pixel_var_8x8;
pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16;
pixf->var2[PIXEL_8x8] = x264_pixel_var2_8x8;
pixf->ssd_nv12_core = pixel_ssd_nv12_core;
pixf->ssim_4x4x2_core = ssim_4x4x2_core;
pixf->ssim_end4 = ssim_end4;
pixf->vsad = pixel_vsad;
pixf->asd8 = pixel_asd8;
pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4;
pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4;
pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8;
pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8;
pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c;
pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c;
pixf->intra_sad_x3_8x16c = x264_intra_sad_x3_8x16c;
pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c;
pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16;
pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16;
#if HIGH_BIT_DEPTH
#if HAVE_MMX
if( cpu&X264_CPU_MMX2 )
{
INIT7( sad, _mmx2 );
INIT7_NAME( sad_aligned, sad, _mmx2 );
INIT7( sad_x3, _mmx2 );
INIT7( sad_x4, _mmx2 );
INIT8( satd, _mmx2 );
INIT7( satd_x3, _mmx2 );
INIT7( satd_x4, _mmx2 );
INIT4( hadamard_ac, _mmx2 );
INIT8( ssd, _mmx2 );
INIT_ADS( _mmx2 );
pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_mmx2;
pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmx2;
pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_mmx2;
#if ARCH_X86
pixf->var2[PIXEL_8x8] = x264_pixel_var2_8x8_mmx2;
pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16_mmx2;
#endif
pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_mmx2;
pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_mmx2;
pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_mmx2;
pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_mmx2;
pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_mmx2;
pixf->intra_sad_x3_8x16c = x264_intra_sad_x3_8x16c_mmx2;
pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_mmx2;
pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_mmx2;
pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmx2;
}
if( cpu&X264_CPU_SSE2 )
{
INIT4_NAME( sad_aligned, sad, _sse2_aligned );
INIT5( ssd, _sse2 );
INIT6( satd, _sse2 );
pixf->satd[PIXEL_4x16] = x264_pixel_satd_4x16_sse2;
pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse2;
#if ARCH_X86_64
pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
pixf->sa8d_satd[PIXEL_16x16] = x264_pixel_sa8d_satd_16x16_sse2;
#endif
pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_sse2;
pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_sse2;
pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_sse2;
pixf->ssim_end4 = x264_pixel_ssim_end4_sse2;
pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
pixf->var2[PIXEL_8x8] = x264_pixel_var2_8x8_sse2;
pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16_sse2;
pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_sse2;
}
if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
{
INIT5( sad, _sse2 );
INIT2( sad_x3, _sse2 );
INIT2( sad_x4, _sse2 );
INIT_ADS( _sse2 );
if( !(cpu&X264_CPU_STACK_MOD4) )
{
INIT4( hadamard_ac, _sse2 );
}
pixf->vsad = x264_pixel_vsad_sse2;
pixf->asd8 = x264_pixel_asd8_sse2;
pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_sse2;
pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_sse2;
pixf->intra_sad_x3_8x16c = x264_intra_sad_x3_8x16c_sse2;
pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_sse2;
pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
}
if( cpu&X264_CPU_SSE2_IS_FAST )
{
pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
}
if( cpu&X264_CPU_SSSE3 )
{
INIT4_NAME( sad_aligned, sad, _ssse3_aligned );
pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_4x4_ssse3;
pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_4x8_ssse3;
INIT7( sad, _ssse3 );
INIT7( sad_x3, _ssse3 );
INIT7( sad_x4, _ssse3 );
INIT_ADS( _ssse3 );
INIT6( satd, _ssse3 );
pixf->satd[PIXEL_4x16] = x264_pixel_satd_4x16_ssse3;
if( !(cpu&X264_CPU_STACK_MOD4) )
{
INIT4( hadamard_ac, _ssse3 );
}
pixf->vsad = x264_pixel_vsad_ssse3;
pixf->asd8 = x264_pixel_asd8_ssse3;
pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_ssse3;
pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_ssse3;
#if ARCH_X86_64
pixf->sa8d_satd[PIXEL_16x16] = x264_pixel_sa8d_satd_16x16_ssse3;
#endif
pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_ssse3;
pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_ssse3;
pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_ssse3;
pixf->intra_sad_x3_8x16c = x264_intra_sad_x3_8x16c_ssse3;
pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_ssse3;
pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_ssse3;
}
if( cpu&X264_CPU_SSE4 )
{
INIT6( satd, _sse4 );
pixf->satd[PIXEL_4x16] = x264_pixel_satd_4x16_sse4;
if( !(cpu&X264_CPU_STACK_MOD4) )
{
INIT4( hadamard_ac, _sse4 );
}
pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse4;
#if ARCH_X86_64
pixf->sa8d_satd[PIXEL_16x16] = x264_pixel_sa8d_satd_16x16_sse4;
#endif
pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_sse4;
}
if( cpu&X264_CPU_AVX )
{