| /***************************************************************************** |
| * dct.c: h264 encoder library |
| ***************************************************************************** |
| * Copyright (C) 2003-2008 x264 project |
| * |
| * 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 |
| * 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. |
| *****************************************************************************/ |
| |
| #include "common.h" |
| #ifdef HAVE_MMX |
| # include "x86/dct.h" |
| #endif |
| #ifdef ARCH_PPC |
| # include "ppc/dct.h" |
| #endif |
| |
| 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 dct4x4dc( int16_t d[4][4] ) |
| { |
| int16_t tmp[4][4]; |
| int s01, s23; |
| int d01, d23; |
| int i; |
| |
| for( i = 0; i < 4; 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; |
| tmp[2][i] = d01 - d23; |
| tmp[3][i] = d01 + d23; |
| } |
| |
| for( i = 0; i < 4; i++ ) |
| { |
| s01 = tmp[i][0] + tmp[i][1]; |
| d01 = tmp[i][0] - tmp[i][1]; |
| s23 = tmp[i][2] + tmp[i][3]; |
| d23 = tmp[i][2] - tmp[i][3]; |
| |
| 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; |
| } |
| } |
| |
| static void idct4x4dc( int16_t d[4][4] ) |
| { |
| int16_t tmp[4][4]; |
| int s01, s23; |
| int d01, d23; |
| int i; |
| |
| for( i = 0; i < 4; 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; |
| tmp[2][i] = d01 - d23; |
| tmp[3][i] = d01 + d23; |
| } |
| |
| for( i = 0; i < 4; i++ ) |
| { |
| s01 = tmp[i][0] + tmp[i][1]; |
| d01 = tmp[i][0] - tmp[i][1]; |
| s23 = tmp[i][2] + tmp[i][3]; |
| d23 = tmp[i][2] - tmp[i][3]; |
| |
| d[i][0] = s01 + s23; |
| d[i][1] = s01 - s23; |
| d[i][2] = d01 - d23; |
| d[i][3] = d01 + d23; |
| } |
| } |
| |
| static inline void pixel_sub_wxh( int16_t *diff, int i_size, |
| uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2 ) |
| { |
| int y, x; |
| for( y = 0; y < i_size; y++ ) |
| { |
| for( x = 0; x < i_size; x++ ) |
| { |
| diff[x + y*i_size] = pix1[x] - pix2[x]; |
| } |
| pix1 += i_pix1; |
| pix2 += 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, FENC_STRIDE, pix2, FDEC_STRIDE ); |
| |
| for( i = 0; i < 4; i++ ) |
| { |
| const int s03 = d[i][0] + d[i][3]; |
| const int s12 = d[i][1] + d[i][2]; |
| const int d03 = d[i][0] - d[i][3]; |
| const int d12 = d[i][1] - d[i][2]; |
| |
| tmp[0][i] = s03 + s12; |
| tmp[1][i] = 2*d03 + d12; |
| tmp[2][i] = s03 - s12; |
| tmp[3][i] = d03 - 2*d12; |
| } |
| |
| for( i = 0; i < 4; i++ ) |
| { |
| const int s03 = tmp[i][0] + tmp[i][3]; |
| const int s12 = tmp[i][1] + tmp[i][2]; |
| const int d03 = tmp[i][0] - tmp[i][3]; |
| const int d12 = tmp[i][1] - tmp[i][2]; |
| |
| 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, uint8_t *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, uint8_t *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, int16_t dct[4][4] ) |
| { |
| int16_t d[4][4]; |
| int16_t tmp[4][4]; |
| int x, y; |
| int i; |
| |
| for( i = 0; i < 4; i++ ) |
| { |
| 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; |
| tmp[i][2] = d02 - d13; |
| tmp[i][3] = s02 - s13; |
| } |
| |
| for( i = 0; i < 4; i++ ) |
| { |
| 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]; |
| |
| d[0][i] = ( s02 + s13 + 32 ) >> 6; |
| d[1][i] = ( d02 + d13 + 32 ) >> 6; |
| d[2][i] = ( d02 - d13 + 32 ) >> 6; |
| d[3][i] = ( s02 - s13 + 32 ) >> 6; |
| } |
| |
| |
| for( y = 0; y < 4; y++ ) |
| { |
| for( x = 0; x < 4; x++ ) |
| { |
| p_dst[x] = x264_clip_uint8( p_dst[x] + d[y][x] ); |
| } |
| p_dst += FDEC_STRIDE; |
| } |
| } |
| |
| static void add8x8_idct( uint8_t *p_dst, int16_t dct[4][4][4] ) |
| { |
| 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, int16_t dct[16][4][4] ) |
| { |
| 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] ); |
| } |
| |
| /**************************************************************************** |
| * 8x8 transform: |
| ****************************************************************************/ |
| |
| #define DCT8_1D {\ |
| const int s07 = SRC(0) + SRC(7);\ |
| const int s16 = SRC(1) + SRC(6);\ |
| const int s25 = SRC(2) + SRC(5);\ |
| const int s34 = SRC(3) + SRC(4);\ |
| const int a0 = s07 + s34;\ |
| const int a1 = s16 + s25;\ |
| const int a2 = s07 - s34;\ |
| const int a3 = s16 - s25;\ |
| const int d07 = SRC(0) - SRC(7);\ |
| const int d16 = SRC(1) - SRC(6);\ |
| const int d25 = SRC(2) - SRC(5);\ |
| const int d34 = SRC(3) - SRC(4);\ |
| const int a4 = d16 + d25 + (d07 + (d07>>1));\ |
| const int a5 = d07 - d34 - (d25 + (d25>>1));\ |
| const int a6 = d07 + d34 - (d16 + (d16>>1));\ |
| const int a7 = d16 - d25 + (d34 + (d34>>1));\ |
| 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, uint8_t *pix2 ) |
| { |
| int i; |
| int16_t tmp[8][8]; |
| |
| pixel_sub_wxh( (int16_t*)tmp, 8, pix1, FENC_STRIDE, pix2, FDEC_STRIDE ); |
| |
| #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) 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, uint8_t *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 {\ |
| const int a0 = SRC(0) + SRC(4);\ |
| const int a2 = SRC(0) - SRC(4);\ |
| const int a4 = (SRC(2)>>1) - SRC(6);\ |
| const int a6 = (SRC(6)>>1) + SRC(2);\ |
| const int b0 = a0 + a6;\ |
| const int b2 = a2 + a4;\ |
| const int b4 = a2 - a4;\ |
| const int b6 = a0 - a6;\ |
| const int a1 = -SRC(3) + SRC(5) - SRC(7) - (SRC(7)>>1);\ |
| const int a3 = SRC(1) + SRC(7) - SRC(3) - (SRC(3)>>1);\ |
| const int a5 = -SRC(1) + SRC(7) + SRC(5) + (SRC(5)>>1);\ |
| const int a7 = SRC(3) + SRC(5) + SRC(1) + (SRC(1)>>1);\ |
| const int b1 = (a7>>2) + a1;\ |
| const int b3 = a3 + (a5>>2);\ |
| const int b5 = (a3>>2) - a5;\ |
| const int b7 = a7 - (a1>>2);\ |
| DST(0, b0 + b7);\ |
| DST(1, b2 + b5);\ |
| DST(2, b4 + b3);\ |
| DST(3, b6 + b1);\ |
| DST(4, b6 - b1);\ |
| DST(5, b4 - b3);\ |
| DST(6, b2 - b5);\ |
| DST(7, b0 - b7);\ |
| } |
| |
| 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[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[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, int16_t dct[4][8][8] ) |
| { |
| 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] ); |
| } |
| |
| |
| /**************************************************************************** |
| * x264_dct_init: |
| ****************************************************************************/ |
| void x264_dct_init( int cpu, x264_dct_function_t *dctf ) |
| { |
| dctf->sub4x4_dct = sub4x4_dct; |
| dctf->add4x4_idct = add4x4_idct; |
| |
| dctf->sub8x8_dct = sub8x8_dct; |
| dctf->add8x8_idct = add8x8_idct; |
| |
| dctf->sub16x16_dct = sub16x16_dct; |
| dctf->add16x16_idct = add16x16_idct; |
| |
| dctf->sub8x8_dct8 = sub8x8_dct8; |
| dctf->add8x8_idct8 = add8x8_idct8; |
| |
| dctf->sub16x16_dct8 = sub16x16_dct8; |
| dctf->add16x16_idct8 = add16x16_idct8; |
| |
| dctf->dct4x4dc = dct4x4dc; |
| dctf->idct4x4dc = idct4x4dc; |
| |
| #ifdef HAVE_MMX |
| if( cpu&X264_CPU_MMX ) |
| { |
| 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_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 |
| } |
| |
| 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 //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 |
| } |
