/*****************************************************************************
* dct.c: h264 encoder library
*****************************************************************************
- * Copyright (C) 2003 Laurent Aimar
- * $Id: dct.c,v 1.1 2004/06/03 19:27:06 fenrir Exp $
+ * Copyright (C) 2003-2008 x264 project
*
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ * Authors: Loren Merritt <lorenm@u.washington.edu>
+ * Laurent Aimar <fenrir@via.ecp.fr>
*
* 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
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*****************************************************************************/
#include "common.h"
-#ifdef HAVE_MMXEXT
-# include "i386/dct.h"
+#ifdef HAVE_MMX
+# include "x86/dct.h"
#endif
#ifdef ARCH_PPC
# include "ppc/dct.h"
#endif
-
-static inline int clip_uint8( int a )
-{
- if (a&(~255))
- return (-a)>>31;
- else
- return a;
-}
+int x264_dct4_weight2_zigzag[2][16];
+int x264_dct8_weight2_zigzag[2][64];
/*
* XXX For all dct dc : input could be equal to output so ...
*/
-static void dct2x2dc( int16_t d[2][2] )
-{
- int tmp[2][2];
-
- tmp[0][0] = d[0][0] + d[0][1];
- tmp[1][0] = d[0][0] - d[0][1];
- tmp[0][1] = d[1][0] + d[1][1];
- tmp[1][1] = d[1][0] - d[1][1];
-
- d[0][0] = tmp[0][0] + tmp[0][1];
- d[0][1] = tmp[1][0] + tmp[1][1];
- d[1][0] = tmp[0][0] - tmp[0][1];
- d[1][1] = tmp[1][0] - tmp[1][1];
-}
-
static void dct4x4dc( int16_t d[4][4] )
{
int16_t tmp[4][4];
s23 = tmp[i][2] + tmp[i][3];
d23 = tmp[i][2] - tmp[i][3];
- d[0][i] = ( s01 + s23 + 1 ) >> 1;
- d[1][i] = ( s01 - s23 + 1 ) >> 1;
- d[2][i] = ( d01 - d23 + 1 ) >> 1;
- d[3][i] = ( d01 + d23 + 1 ) >> 1;
+ d[i][0] = ( s01 + s23 + 1 ) >> 1;
+ d[i][1] = ( s01 - s23 + 1 ) >> 1;
+ d[i][2] = ( d01 - d23 + 1 ) >> 1;
+ d[i][3] = ( d01 + d23 + 1 ) >> 1;
}
}
for( i = 0; i < 4; i++ )
{
- s01 = d[0][i] + d[1][i];
- d01 = d[0][i] - d[1][i];
- s23 = d[2][i] + d[3][i];
- d23 = d[2][i] - d[3][i];
+ s01 = d[i][0] + d[i][1];
+ d01 = d[i][0] - d[i][1];
+ s23 = d[i][2] + d[i][3];
+ d23 = d[i][2] - d[i][3];
tmp[0][i] = s01 + s23;
tmp[1][i] = s01 - s23;
}
}
-static void sub4x4_dct( int16_t dct[4][4], uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2 )
+static void sub4x4_dct( int16_t dct[4][4], uint8_t *pix1, uint8_t *pix2 )
{
int16_t d[4][4];
int16_t tmp[4][4];
int i;
- pixel_sub_wxh( (int16_t*)d, 4, pix1, i_pix1, pix2, i_pix2 );
+ pixel_sub_wxh( (int16_t*)d, 4, pix1, FENC_STRIDE, pix2, FDEC_STRIDE );
for( i = 0; i < 4; i++ )
{
const int d03 = tmp[i][0] - tmp[i][3];
const int d12 = tmp[i][1] - tmp[i][2];
- dct[0][i] = s03 + s12;
- dct[1][i] = 2*d03 + d12;
- dct[2][i] = s03 - s12;
- dct[3][i] = d03 - 2*d12;
+ dct[i][0] = s03 + s12;
+ dct[i][1] = 2*d03 + d12;
+ dct[i][2] = s03 - s12;
+ dct[i][3] = d03 - 2*d12;
}
}
-static void sub8x8_dct( int16_t dct[4][4][4], uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2 )
+static void sub8x8_dct( int16_t dct[4][4][4], uint8_t *pix1, uint8_t *pix2 )
{
- sub4x4_dct( dct[0], &pix1[0], i_pix1, &pix2[0], i_pix2 );
- sub4x4_dct( dct[1], &pix1[4], i_pix1, &pix2[4], i_pix2 );
- sub4x4_dct( dct[2], &pix1[4*i_pix1+0], i_pix1, &pix2[4*i_pix2+0], i_pix2 );
- sub4x4_dct( dct[3], &pix1[4*i_pix1+4], i_pix1, &pix2[4*i_pix2+4], i_pix2 );
+ sub4x4_dct( dct[0], &pix1[0], &pix2[0] );
+ sub4x4_dct( dct[1], &pix1[4], &pix2[4] );
+ sub4x4_dct( dct[2], &pix1[4*FENC_STRIDE+0], &pix2[4*FDEC_STRIDE+0] );
+ sub4x4_dct( dct[3], &pix1[4*FENC_STRIDE+4], &pix2[4*FDEC_STRIDE+4] );
}
-static void sub16x16_dct( int16_t dct[16][4][4], uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2 )
+static void sub16x16_dct( int16_t dct[16][4][4], uint8_t *pix1, uint8_t *pix2 )
{
- sub8x8_dct( &dct[ 0], pix1, i_pix1, pix2, i_pix2 );
- sub8x8_dct( &dct[ 4], &pix1[8], i_pix1, &pix2[8], i_pix2 );
- sub8x8_dct( &dct[ 8], &pix1[8*i_pix1], i_pix1, &pix2[8*i_pix2], i_pix2 );
- sub8x8_dct( &dct[12], &pix1[8*i_pix1+8], i_pix1, &pix2[8*i_pix2+8], i_pix2 );
+ sub8x8_dct( &dct[ 0], &pix1[0], &pix2[0] );
+ sub8x8_dct( &dct[ 4], &pix1[8], &pix2[8] );
+ sub8x8_dct( &dct[ 8], &pix1[8*FENC_STRIDE+0], &pix2[8*FDEC_STRIDE+0] );
+ sub8x8_dct( &dct[12], &pix1[8*FENC_STRIDE+8], &pix2[8*FDEC_STRIDE+8] );
}
-static void add4x4_idct( uint8_t *p_dst, int i_dst, int16_t dct[4][4] )
+static void add4x4_idct( uint8_t *p_dst, int16_t dct[4][4] )
{
int16_t d[4][4];
int16_t tmp[4][4];
for( i = 0; i < 4; i++ )
{
- const int s02 = dct[i][0] + dct[i][2];
- const int d02 = dct[i][0] - dct[i][2];
- const int s13 = dct[i][1] + (dct[i][3]>>1);
- const int d13 = (dct[i][1]>>1) - dct[i][3];
+ const int s02 = dct[0][i] + dct[2][i];
+ const int d02 = dct[0][i] - dct[2][i];
+ const int s13 = dct[1][i] + (dct[3][i]>>1);
+ const int d13 = (dct[1][i]>>1) - dct[3][i];
tmp[i][0] = s02 + s13;
tmp[i][1] = d02 + d13;
const int s02 = tmp[0][i] + tmp[2][i];
const int d02 = tmp[0][i] - tmp[2][i];
const int s13 = tmp[1][i] + (tmp[3][i]>>1);
- const int d13 = (tmp[1][i]>>1) - tmp[3][i];
+ const int d13 = (tmp[1][i]>>1) - tmp[3][i];
d[0][i] = ( s02 + s13 + 32 ) >> 6;
d[1][i] = ( d02 + d13 + 32 ) >> 6;
{
for( x = 0; x < 4; x++ )
{
- p_dst[x] = clip_uint8( p_dst[x] + d[y][x] );
+ p_dst[x] = x264_clip_uint8( p_dst[x] + d[y][x] );
}
- p_dst += i_dst;
+ p_dst += FDEC_STRIDE;
}
}
-static void add8x8_idct( uint8_t *p_dst, int i_dst, int16_t dct[4][4][4] )
+static void add8x8_idct( uint8_t *p_dst, int16_t dct[4][4][4] )
{
- add4x4_idct( p_dst, i_dst, dct[0] );
- add4x4_idct( &p_dst[4], i_dst, dct[1] );
- add4x4_idct( &p_dst[4*i_dst+0], i_dst, dct[2] );
- add4x4_idct( &p_dst[4*i_dst+4], i_dst, dct[3] );
+ add4x4_idct( &p_dst[0], dct[0] );
+ add4x4_idct( &p_dst[4], dct[1] );
+ add4x4_idct( &p_dst[4*FDEC_STRIDE+0], dct[2] );
+ add4x4_idct( &p_dst[4*FDEC_STRIDE+4], dct[3] );
}
-static void add16x16_idct( uint8_t *p_dst, int i_dst, int16_t dct[16][4][4] )
+static void add16x16_idct( uint8_t *p_dst, int16_t dct[16][4][4] )
{
- add8x8_idct( &p_dst[0], i_dst, &dct[0] );
- add8x8_idct( &p_dst[8], i_dst, &dct[4] );
- add8x8_idct( &p_dst[8*i_dst], i_dst, &dct[8] );
- add8x8_idct( &p_dst[8*i_dst+8], i_dst, &dct[12] );
+ add8x8_idct( &p_dst[0], &dct[0] );
+ add8x8_idct( &p_dst[8], &dct[4] );
+ add8x8_idct( &p_dst[8*FDEC_STRIDE+0], &dct[8] );
+ add8x8_idct( &p_dst[8*FDEC_STRIDE+8], &dct[12] );
}
/****************************************************************************
const int a5 = d07 - d34 - (d25 + (d25>>1));\
const int a6 = d07 + d34 - (d16 + (d16>>1));\
const int a7 = d16 - d25 + (d34 + (d34>>1));\
- SRC(0) = a0 + a1 ;\
- SRC(1) = a4 + (a7>>2);\
- SRC(2) = a2 + (a3>>1);\
- SRC(3) = a5 + (a6>>2);\
- SRC(4) = a0 - a1 ;\
- SRC(5) = a6 - (a5>>2);\
- SRC(6) = (a2>>1) - a3 ;\
- SRC(7) = (a4>>2) - a7 ;\
+ DST(0) = a0 + a1 ;\
+ DST(1) = a4 + (a7>>2);\
+ DST(2) = a2 + (a3>>1);\
+ DST(3) = a5 + (a6>>2);\
+ DST(4) = a0 - a1 ;\
+ DST(5) = a6 - (a5>>2);\
+ DST(6) = (a2>>1) - a3 ;\
+ DST(7) = (a4>>2) - a7 ;\
}
-static void sub8x8_dct8( int16_t dct[8][8], uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2 )
+static void sub8x8_dct8( int16_t dct[8][8], uint8_t *pix1, uint8_t *pix2 )
{
int i;
+ int16_t tmp[8][8];
- pixel_sub_wxh( (int16_t*)dct, 8, pix1, i_pix1, pix2, i_pix2 );
+ pixel_sub_wxh( (int16_t*)tmp, 8, pix1, FENC_STRIDE, pix2, FDEC_STRIDE );
-#define SRC(x) dct[i][x]
+#define SRC(x) tmp[x][i]
+#define DST(x) tmp[x][i]
for( i = 0; i < 8; i++ )
DCT8_1D
#undef SRC
+#undef DST
-#define SRC(x) dct[x][i]
+#define SRC(x) tmp[i][x]
+#define DST(x) dct[x][i]
for( i = 0; i < 8; i++ )
DCT8_1D
#undef SRC
+#undef DST
}
-static void sub16x16_dct8( int16_t dct[4][8][8], uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2 )
+static void sub16x16_dct8( int16_t dct[4][8][8], uint8_t *pix1, uint8_t *pix2 )
{
- sub8x8_dct8( dct[0], pix1, i_pix1, pix2, i_pix2 );
- sub8x8_dct8( dct[1], &pix1[8], i_pix1, &pix2[8], i_pix2 );
- sub8x8_dct8( dct[2], &pix1[8*i_pix1], i_pix1, &pix2[8*i_pix2], i_pix2 );
- sub8x8_dct8( dct[3], &pix1[8*i_pix1+8], i_pix1, &pix2[8*i_pix2+8], i_pix2 );
+ sub8x8_dct8( dct[0], &pix1[0], &pix2[0] );
+ sub8x8_dct8( dct[1], &pix1[8], &pix2[8] );
+ sub8x8_dct8( dct[2], &pix1[8*FENC_STRIDE+0], &pix2[8*FDEC_STRIDE+0] );
+ sub8x8_dct8( dct[3], &pix1[8*FENC_STRIDE+8], &pix2[8*FDEC_STRIDE+8] );
}
#define IDCT8_1D {\
DST(7, b0 - b7);\
}
-static void add8x8_idct8( uint8_t *dst, int i_dst, int16_t dct[8][8] )
+static void add8x8_idct8( uint8_t *dst, int16_t dct[8][8] )
{
int i;
dct[0][0] += 32; // rounding for the >>6 at the end
-#define SRC(x) dct[i][x]
-#define DST(x,rhs) dct[i][x] = (rhs)
+#define SRC(x) dct[x][i]
+#define DST(x,rhs) dct[x][i] = (rhs)
for( i = 0; i < 8; i++ )
IDCT8_1D
#undef SRC
#undef DST
-#define SRC(x) dct[x][i]
-#define DST(x,rhs) dst[i + x*i_dst] = clip_uint8( dst[i + x*i_dst] + ((rhs) >> 6) );
+#define SRC(x) dct[i][x]
+#define DST(x,rhs) dst[i + x*FDEC_STRIDE] = x264_clip_uint8( dst[i + x*FDEC_STRIDE] + ((rhs) >> 6) );
for( i = 0; i < 8; i++ )
IDCT8_1D
#undef SRC
#undef DST
}
-static void add16x16_idct8( uint8_t *dst, int i_dst, int16_t dct[4][8][8] )
+static void add16x16_idct8( uint8_t *dst, int16_t dct[4][8][8] )
{
- add8x8_idct8( &dst[0], i_dst, dct[0] );
- add8x8_idct8( &dst[8], i_dst, dct[1] );
- add8x8_idct8( &dst[8*i_dst], i_dst, dct[2] );
- add8x8_idct8( &dst[8*i_dst+8], i_dst, dct[3] );
+ add8x8_idct8( &dst[0], dct[0] );
+ add8x8_idct8( &dst[8], dct[1] );
+ add8x8_idct8( &dst[8*FDEC_STRIDE+0], dct[2] );
+ add8x8_idct8( &dst[8*FDEC_STRIDE+8], dct[3] );
}
dctf->dct4x4dc = dct4x4dc;
dctf->idct4x4dc = idct4x4dc;
- dctf->dct2x2dc = dct2x2dc;
- dctf->idct2x2dc = dct2x2dc;
-
-#ifdef HAVE_MMXEXT
- if( cpu&X264_CPU_MMXEXT )
+#ifdef HAVE_MMX
+ if( cpu&X264_CPU_MMX )
{
- dctf->sub4x4_dct = x264_sub4x4_dct_mmxext;
- dctf->sub8x8_dct = x264_sub8x8_dct_mmxext;
- dctf->sub16x16_dct = x264_sub16x16_dct_mmxext;
-
- dctf->add4x4_idct = x264_add4x4_idct_mmxext;
- dctf->add8x8_idct = x264_add8x8_idct_mmxext;
- dctf->add16x16_idct = x264_add16x16_idct_mmxext;
-
- dctf->dct4x4dc = x264_dct4x4dc_mmxext;
- dctf->idct4x4dc = x264_idct4x4dc_mmxext;
+ dctf->sub4x4_dct = x264_sub4x4_dct_mmx;
+ dctf->add4x4_idct = x264_add4x4_idct_mmx;
+ dctf->dct4x4dc = x264_dct4x4dc_mmx;
+ dctf->idct4x4dc = x264_idct4x4dc_mmx;
#ifndef ARCH_X86_64
- dctf->sub8x8_dct8 = x264_sub8x8_dct8_mmxext;
- dctf->sub16x16_dct8 = x264_sub16x16_dct8_mmxext;
-
- dctf->add8x8_idct8 = x264_add8x8_idct8_mmxext;
- dctf->add16x16_idct8= x264_add16x16_idct8_mmxext;
+ dctf->sub8x8_dct = x264_sub8x8_dct_mmx;
+ dctf->sub16x16_dct = x264_sub16x16_dct_mmx;
+ dctf->add8x8_idct = x264_add8x8_idct_mmx;
+ dctf->add16x16_idct = x264_add16x16_idct_mmx;
+
+ dctf->sub8x8_dct8 = x264_sub8x8_dct8_mmx;
+ dctf->sub16x16_dct8 = x264_sub16x16_dct8_mmx;
+ dctf->add8x8_idct8 = x264_add8x8_idct8_mmx;
+ dctf->add16x16_idct8= x264_add16x16_idct8_mmx;
#endif
}
-#endif
-#if defined(HAVE_SSE2) && defined(ARCH_X86_64)
if( cpu&X264_CPU_SSE2 )
{
dctf->sub8x8_dct8 = x264_sub8x8_dct8_sse2;
dctf->sub16x16_dct8 = x264_sub16x16_dct8_sse2;
-
dctf->add8x8_idct8 = x264_add8x8_idct8_sse2;
dctf->add16x16_idct8= x264_add16x16_idct8_sse2;
+
+ dctf->sub8x8_dct = x264_sub8x8_dct_sse2;
+ dctf->sub16x16_dct = x264_sub16x16_dct_sse2;
+ dctf->add8x8_idct = x264_add8x8_idct_sse2;
+ dctf->add16x16_idct = x264_add16x16_idct_sse2;
}
-#endif
+#endif //HAVE_MMX
#ifdef ARCH_PPC
if( cpu&X264_CPU_ALTIVEC )
dctf->sub4x4_dct = x264_sub4x4_dct_altivec;
dctf->sub8x8_dct = x264_sub8x8_dct_altivec;
dctf->sub16x16_dct = x264_sub16x16_dct_altivec;
+
+ dctf->add4x4_idct = x264_add4x4_idct_altivec;
+ dctf->add8x8_idct = x264_add8x8_idct_altivec;
+ dctf->add16x16_idct = x264_add16x16_idct_altivec;
+
+ dctf->sub8x8_dct8 = x264_sub8x8_dct8_altivec;
+ dctf->sub16x16_dct8 = x264_sub16x16_dct8_altivec;
+
+ dctf->add8x8_idct8 = x264_add8x8_idct8_altivec;
+ dctf->add16x16_idct8= x264_add16x16_idct8_altivec;
}
#endif
}
+void x264_dct_init_weights( void )
+{
+ int i, j;
+ for( j=0; j<2; j++ )
+ {
+ for( i=0; i<16; i++ )
+ x264_dct4_weight2_zigzag[j][i] = x264_dct4_weight2_tab[ x264_zigzag_scan4[j][i] ];
+ for( i=0; i<64; i++ )
+ x264_dct8_weight2_zigzag[j][i] = x264_dct8_weight2_tab[ x264_zigzag_scan8[j][i] ];
+ }
+}
+
+
+// gcc pessimizes multi-dimensional arrays here, even with constant indices
+#define ZIG(i,y,x) level[i] = dct[0][x*8+y];
+#define ZIGZAG8_FRAME\
+ ZIG( 0,0,0) ZIG( 1,0,1) ZIG( 2,1,0) ZIG( 3,2,0)\
+ ZIG( 4,1,1) ZIG( 5,0,2) ZIG( 6,0,3) ZIG( 7,1,2)\
+ ZIG( 8,2,1) ZIG( 9,3,0) ZIG(10,4,0) ZIG(11,3,1)\
+ ZIG(12,2,2) ZIG(13,1,3) ZIG(14,0,4) ZIG(15,0,5)\
+ ZIG(16,1,4) ZIG(17,2,3) ZIG(18,3,2) ZIG(19,4,1)\
+ ZIG(20,5,0) ZIG(21,6,0) ZIG(22,5,1) ZIG(23,4,2)\
+ ZIG(24,3,3) ZIG(25,2,4) ZIG(26,1,5) ZIG(27,0,6)\
+ ZIG(28,0,7) ZIG(29,1,6) ZIG(30,2,5) ZIG(31,3,4)\
+ ZIG(32,4,3) ZIG(33,5,2) ZIG(34,6,1) ZIG(35,7,0)\
+ ZIG(36,7,1) ZIG(37,6,2) ZIG(38,5,3) ZIG(39,4,4)\
+ ZIG(40,3,5) ZIG(41,2,6) ZIG(42,1,7) ZIG(43,2,7)\
+ ZIG(44,3,6) ZIG(45,4,5) ZIG(46,5,4) ZIG(47,6,3)\
+ ZIG(48,7,2) ZIG(49,7,3) ZIG(50,6,4) ZIG(51,5,5)\
+ ZIG(52,4,6) ZIG(53,3,7) ZIG(54,4,7) ZIG(55,5,6)\
+ ZIG(56,6,5) ZIG(57,7,4) ZIG(58,7,5) ZIG(59,6,6)\
+ ZIG(60,5,7) ZIG(61,6,7) ZIG(62,7,6) ZIG(63,7,7)\
+
+#define ZIGZAG8_FIELD\
+ ZIG( 0,0,0) ZIG( 1,1,0) ZIG( 2,2,0) ZIG( 3,0,1)\
+ ZIG( 4,1,1) ZIG( 5,3,0) ZIG( 6,4,0) ZIG( 7,2,1)\
+ ZIG( 8,0,2) ZIG( 9,3,1) ZIG(10,5,0) ZIG(11,6,0)\
+ ZIG(12,7,0) ZIG(13,4,1) ZIG(14,1,2) ZIG(15,0,3)\
+ ZIG(16,2,2) ZIG(17,5,1) ZIG(18,6,1) ZIG(19,7,1)\
+ ZIG(20,3,2) ZIG(21,1,3) ZIG(22,0,4) ZIG(23,2,3)\
+ ZIG(24,4,2) ZIG(25,5,2) ZIG(26,6,2) ZIG(27,7,2)\
+ ZIG(28,3,3) ZIG(29,1,4) ZIG(30,0,5) ZIG(31,2,4)\
+ ZIG(32,4,3) ZIG(33,5,3) ZIG(34,6,3) ZIG(35,7,3)\
+ ZIG(36,3,4) ZIG(37,1,5) ZIG(38,0,6) ZIG(39,2,5)\
+ ZIG(40,4,4) ZIG(41,5,4) ZIG(42,6,4) ZIG(43,7,4)\
+ ZIG(44,3,5) ZIG(45,1,6) ZIG(46,2,6) ZIG(47,4,5)\
+ ZIG(48,5,5) ZIG(49,6,5) ZIG(50,7,5) ZIG(51,3,6)\
+ ZIG(52,0,7) ZIG(53,1,7) ZIG(54,4,6) ZIG(55,5,6)\
+ ZIG(56,6,6) ZIG(57,7,6) ZIG(58,2,7) ZIG(59,3,7)\
+ ZIG(60,4,7) ZIG(61,5,7) ZIG(62,6,7) ZIG(63,7,7)
+
+#define ZIGZAG4_FRAME\
+ ZIG( 0,0,0) ZIG( 1,0,1) ZIG( 2,1,0) ZIG( 3,2,0)\
+ ZIG( 4,1,1) ZIG( 5,0,2) ZIG( 6,0,3) ZIG( 7,1,2)\
+ ZIG( 8,2,1) ZIG( 9,3,0) ZIG(10,3,1) ZIG(11,2,2)\
+ ZIG(12,1,3) ZIG(13,2,3) ZIG(14,3,2) ZIG(15,3,3)
+
+#define ZIGZAG4_FIELD\
+ ZIG( 0,0,0) ZIG( 1,1,0) ZIG( 2,0,1) ZIG( 3,2,0)\
+ ZIG( 4,3,0) ZIG( 5,1,1) ZIG( 6,2,1) ZIG( 7,3,1)\
+ ZIG( 8,0,2) ZIG( 9,1,2) ZIG(10,2,2) ZIG(11,3,2)\
+ ZIG(12,0,3) ZIG(13,1,3) ZIG(14,2,3) ZIG(15,3,3)
+
+static void zigzag_scan_8x8_frame( int16_t level[64], int16_t dct[8][8] )
+{
+ ZIGZAG8_FRAME
+}
+
+static void zigzag_scan_8x8_field( int16_t level[64], int16_t dct[8][8] )
+{
+ ZIGZAG8_FIELD
+}
+
+#undef ZIG
+#define ZIG(i,y,x) level[i] = dct[0][x*4+y];
+
+static void zigzag_scan_4x4_frame( int16_t level[16], int16_t dct[4][4] )
+{
+ ZIGZAG4_FRAME
+}
+
+static void zigzag_scan_4x4_field( int16_t level[16], int16_t dct[4][4] )
+{
+ *(uint32_t*)level = *(uint32_t*)dct;
+ ZIG(2,0,1) ZIG(3,2,0) ZIG(4,3,0) ZIG(5,1,1)
+ *(uint32_t*)(level+6) = *(uint32_t*)(*dct+6);
+ *(uint64_t*)(level+8) = *(uint64_t*)(*dct+8);
+ *(uint64_t*)(level+12) = *(uint64_t*)(*dct+12);
+}
+
+#undef ZIG
+#define ZIG(i,y,x) {\
+ int oe = x+y*FENC_STRIDE;\
+ int od = x+y*FDEC_STRIDE;\
+ level[i] = p_src[oe] - p_dst[od];\
+}
+#define COPY4x4\
+ *(uint32_t*)(p_dst+0*FDEC_STRIDE) = *(uint32_t*)(p_src+0*FENC_STRIDE);\
+ *(uint32_t*)(p_dst+1*FDEC_STRIDE) = *(uint32_t*)(p_src+1*FENC_STRIDE);\
+ *(uint32_t*)(p_dst+2*FDEC_STRIDE) = *(uint32_t*)(p_src+2*FENC_STRIDE);\
+ *(uint32_t*)(p_dst+3*FDEC_STRIDE) = *(uint32_t*)(p_src+3*FENC_STRIDE);
+#define COPY8x8\
+ *(uint64_t*)(p_dst+0*FDEC_STRIDE) = *(uint64_t*)(p_src+0*FENC_STRIDE);\
+ *(uint64_t*)(p_dst+1*FDEC_STRIDE) = *(uint64_t*)(p_src+1*FENC_STRIDE);\
+ *(uint64_t*)(p_dst+2*FDEC_STRIDE) = *(uint64_t*)(p_src+2*FENC_STRIDE);\
+ *(uint64_t*)(p_dst+3*FDEC_STRIDE) = *(uint64_t*)(p_src+3*FENC_STRIDE);\
+ *(uint64_t*)(p_dst+4*FDEC_STRIDE) = *(uint64_t*)(p_src+4*FENC_STRIDE);\
+ *(uint64_t*)(p_dst+5*FDEC_STRIDE) = *(uint64_t*)(p_src+5*FENC_STRIDE);\
+ *(uint64_t*)(p_dst+6*FDEC_STRIDE) = *(uint64_t*)(p_src+6*FENC_STRIDE);\
+ *(uint64_t*)(p_dst+7*FDEC_STRIDE) = *(uint64_t*)(p_src+7*FENC_STRIDE);
+
+static void zigzag_sub_4x4_frame( int16_t level[16], const uint8_t *p_src, uint8_t *p_dst )
+{
+ ZIGZAG4_FRAME
+ COPY4x4
+}
+
+static void zigzag_sub_4x4_field( int16_t level[16], const uint8_t *p_src, uint8_t *p_dst )
+{
+ ZIGZAG4_FIELD
+ COPY4x4
+}
+
+static void zigzag_sub_8x8_frame( int16_t level[64], const uint8_t *p_src, uint8_t *p_dst )
+{
+ ZIGZAG8_FRAME
+ COPY8x8
+}
+static void zigzag_sub_8x8_field( int16_t level[64], const uint8_t *p_src, uint8_t *p_dst )
+{
+ ZIGZAG8_FIELD
+ COPY8x8
+}
+
+#undef ZIG
+#undef COPY4x4
+
+static void zigzag_interleave_8x8_cavlc( int16_t *dst, int16_t *src )
+{
+ int i,j;
+ for( i=0; i<4; i++ )
+ for( j=0; j<16; j++ )
+ dst[i*16+j] = src[i+j*4];
+}
+
+void x264_zigzag_init( int cpu, x264_zigzag_function_t *pf, int b_interlaced )
+{
+ if( b_interlaced )
+ {
+ pf->scan_8x8 = zigzag_scan_8x8_field;
+ pf->scan_4x4 = zigzag_scan_4x4_field;
+ pf->sub_8x8 = zigzag_sub_8x8_field;
+ pf->sub_4x4 = zigzag_sub_4x4_field;
+#ifdef HAVE_MMX
+ if( cpu&X264_CPU_MMXEXT )
+ pf->scan_4x4 = x264_zigzag_scan_4x4_field_mmxext;
+#endif
+
+#ifdef ARCH_PPC
+ if( cpu&X264_CPU_ALTIVEC )
+ pf->scan_4x4 = x264_zigzag_scan_4x4_field_altivec;
+#endif
+ }
+ else
+ {
+ pf->scan_8x8 = zigzag_scan_8x8_frame;
+ pf->scan_4x4 = zigzag_scan_4x4_frame;
+ pf->sub_8x8 = zigzag_sub_8x8_frame;
+ pf->sub_4x4 = zigzag_sub_4x4_frame;
+#ifdef HAVE_MMX
+ if( cpu&X264_CPU_MMX )
+ pf->scan_4x4 = x264_zigzag_scan_4x4_frame_mmx;
+ if( cpu&X264_CPU_MMXEXT )
+ pf->scan_8x8 = x264_zigzag_scan_8x8_frame_mmxext;
+ if( cpu&X264_CPU_SSE2_IS_FAST )
+ pf->scan_8x8 = x264_zigzag_scan_8x8_frame_sse2;
+ if( cpu&X264_CPU_SSSE3 )
+ {
+ pf->sub_4x4 = x264_zigzag_sub_4x4_frame_ssse3;
+ pf->scan_8x8 = x264_zigzag_scan_8x8_frame_ssse3;
+ }
+ if( cpu&X264_CPU_PHADD_IS_FAST )
+ pf->scan_4x4 = x264_zigzag_scan_4x4_frame_ssse3;
+#endif
+
+#ifdef ARCH_PPC
+ if( cpu&X264_CPU_ALTIVEC )
+ pf->scan_4x4 = x264_zigzag_scan_4x4_frame_altivec;
+#endif
+ }
+
+ pf->interleave_8x8_cavlc = zigzag_interleave_8x8_cavlc;
+#ifdef HAVE_MMX
+ if( cpu&X264_CPU_MMX )
+ pf->interleave_8x8_cavlc = x264_zigzag_interleave_8x8_cavlc_mmx;
+#endif
+}
projects / x264 / blobdiff