| /***************************************************************************** |
| * dct.c: h264 encoder library |
| ***************************************************************************** |
| * Copyright (C) 2003-2008 x264 project |
| * |
| * Authors: Guillaume Poirier <gpoirier@mplayerhq.hu> |
| * Eric Petit <eric.petit@lapsus.org> |
| * |
| * 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. |
| *****************************************************************************/ |
| |
| #ifdef SYS_LINUX |
| #include <altivec.h> |
| #endif |
| |
| #include "common/common.h" |
| #include "ppccommon.h" |
| |
| #define VEC_DCT(a0,a1,a2,a3,b0,b1,b2,b3) \ |
| b1 = vec_add( a0, a3 ); \ |
| b3 = vec_add( a1, a2 ); \ |
| b0 = vec_add( b1, b3 ); \ |
| b2 = vec_sub( b1, b3 ); \ |
| a0 = vec_sub( a0, a3 ); \ |
| a1 = vec_sub( a1, a2 ); \ |
| b1 = vec_add( a0, a0 ); \ |
| b1 = vec_add( b1, a1 ); \ |
| b3 = vec_sub( a0, a1 ); \ |
| b3 = vec_sub( b3, a1 ) |
| |
| void x264_sub4x4_dct_altivec( int16_t dct[4][4], |
| uint8_t *pix1, uint8_t *pix2 ) |
| { |
| PREP_DIFF_8BYTEALIGNED; |
| vec_s16_t dct0v, dct1v, dct2v, dct3v; |
| vec_s16_t tmp0v, tmp1v, tmp2v, tmp3v; |
| |
| vec_u8_t permHighv; |
| |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 4, dct0v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 4, dct1v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 4, dct2v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 4, dct3v ); |
| VEC_DCT( dct0v, dct1v, dct2v, dct3v, tmp0v, tmp1v, tmp2v, tmp3v ); |
| VEC_TRANSPOSE_4( tmp0v, tmp1v, tmp2v, tmp3v, |
| dct0v, dct1v, dct2v, dct3v ); |
| permHighv = (vec_u8_t) CV(0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17); |
| VEC_DCT( dct0v, dct1v, dct2v, dct3v, tmp0v, tmp1v, tmp2v, tmp3v ); |
| |
| vec_st(vec_perm(tmp0v, tmp1v, permHighv), 0, (int16_t*)dct); |
| vec_st(vec_perm(tmp2v, tmp3v, permHighv), 16, (int16_t*)dct); |
| } |
| |
| void x264_sub8x8_dct_altivec( int16_t dct[4][4][4], |
| uint8_t *pix1, uint8_t *pix2 ) |
| { |
| PREP_DIFF_8BYTEALIGNED; |
| vec_s16_t dct0v, dct1v, dct2v, dct3v, dct4v, dct5v, dct6v, dct7v; |
| vec_s16_t tmp0v, tmp1v, tmp2v, tmp3v, tmp4v, tmp5v, tmp6v, tmp7v; |
| |
| vec_u8_t permHighv, permLowv; |
| |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct0v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct1v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct2v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct3v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct4v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct5v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct6v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct7v ); |
| VEC_DCT( dct0v, dct1v, dct2v, dct3v, tmp0v, tmp1v, tmp2v, tmp3v ); |
| VEC_DCT( dct4v, dct5v, dct6v, dct7v, tmp4v, tmp5v, tmp6v, tmp7v ); |
| VEC_TRANSPOSE_8( tmp0v, tmp1v, tmp2v, tmp3v, |
| tmp4v, tmp5v, tmp6v, tmp7v, |
| dct0v, dct1v, dct2v, dct3v, |
| dct4v, dct5v, dct6v, dct7v ); |
| |
| permHighv = (vec_u8_t) CV(0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17); |
| permLowv = (vec_u8_t) CV(0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F); |
| |
| VEC_DCT( dct0v, dct1v, dct2v, dct3v, tmp0v, tmp1v, tmp2v, tmp3v ); |
| VEC_DCT( dct4v, dct5v, dct6v, dct7v, tmp4v, tmp5v, tmp6v, tmp7v ); |
| |
| vec_st(vec_perm(tmp0v, tmp1v, permHighv), 0, (int16_t*)dct); |
| vec_st(vec_perm(tmp2v, tmp3v, permHighv), 16, (int16_t*)dct); |
| vec_st(vec_perm(tmp4v, tmp5v, permHighv), 32, (int16_t*)dct); |
| vec_st(vec_perm(tmp6v, tmp7v, permHighv), 48, (int16_t*)dct); |
| vec_st(vec_perm(tmp0v, tmp1v, permLowv), 64, (int16_t*)dct); |
| vec_st(vec_perm(tmp2v, tmp3v, permLowv), 80, (int16_t*)dct); |
| vec_st(vec_perm(tmp4v, tmp5v, permLowv), 96, (int16_t*)dct); |
| vec_st(vec_perm(tmp6v, tmp7v, permLowv), 112, (int16_t*)dct); |
| } |
| |
| void x264_sub16x16_dct_altivec( int16_t dct[16][4][4], |
| uint8_t *pix1, uint8_t *pix2 ) |
| { |
| x264_sub8x8_dct_altivec( &dct[ 0], &pix1[0], &pix2[0] ); |
| x264_sub8x8_dct_altivec( &dct[ 4], &pix1[8], &pix2[8] ); |
| x264_sub8x8_dct_altivec( &dct[ 8], &pix1[8*FENC_STRIDE+0], &pix2[8*FDEC_STRIDE+0] ); |
| x264_sub8x8_dct_altivec( &dct[12], &pix1[8*FENC_STRIDE+8], &pix2[8*FDEC_STRIDE+8] ); |
| } |
| |
| /*************************************************************************** |
| * 8x8 transform: |
| ***************************************************************************/ |
| |
| /* DCT8_1D unrolled by 8 in Altivec */ |
| #define DCT8_1D_ALTIVEC( dct0v, dct1v, dct2v, dct3v, dct4v, dct5v, dct6v, dct7v ) \ |
| { \ |
| /* int s07 = SRC(0) + SRC(7); */ \ |
| vec_s16_t s07v = vec_add( dct0v, dct7v); \ |
| /* int s16 = SRC(1) + SRC(6); */ \ |
| vec_s16_t s16v = vec_add( dct1v, dct6v); \ |
| /* int s25 = SRC(2) + SRC(5); */ \ |
| vec_s16_t s25v = vec_add( dct2v, dct5v); \ |
| /* int s34 = SRC(3) + SRC(4); */ \ |
| vec_s16_t s34v = vec_add( dct3v, dct4v); \ |
| \ |
| /* int a0 = s07 + s34; */ \ |
| vec_s16_t a0v = vec_add(s07v, s34v); \ |
| /* int a1 = s16 + s25; */ \ |
| vec_s16_t a1v = vec_add(s16v, s25v); \ |
| /* int a2 = s07 - s34; */ \ |
| vec_s16_t a2v = vec_sub(s07v, s34v); \ |
| /* int a3 = s16 - s25; */ \ |
| vec_s16_t a3v = vec_sub(s16v, s25v); \ |
| \ |
| /* int d07 = SRC(0) - SRC(7); */ \ |
| vec_s16_t d07v = vec_sub( dct0v, dct7v); \ |
| /* int d16 = SRC(1) - SRC(6); */ \ |
| vec_s16_t d16v = vec_sub( dct1v, dct6v); \ |
| /* int d25 = SRC(2) - SRC(5); */ \ |
| vec_s16_t d25v = vec_sub( dct2v, dct5v); \ |
| /* int d34 = SRC(3) - SRC(4); */ \ |
| vec_s16_t d34v = vec_sub( dct3v, dct4v); \ |
| \ |
| /* int a4 = d16 + d25 + (d07 + (d07>>1)); */ \ |
| vec_s16_t a4v = vec_add( vec_add(d16v, d25v), vec_add(d07v, vec_sra(d07v, onev)) );\ |
| /* int a5 = d07 - d34 - (d25 + (d25>>1)); */ \ |
| vec_s16_t a5v = vec_sub( vec_sub(d07v, d34v), vec_add(d25v, vec_sra(d25v, onev)) );\ |
| /* int a6 = d07 + d34 - (d16 + (d16>>1)); */ \ |
| vec_s16_t a6v = vec_sub( vec_add(d07v, d34v), vec_add(d16v, vec_sra(d16v, onev)) );\ |
| /* int a7 = d16 - d25 + (d34 + (d34>>1)); */ \ |
| vec_s16_t a7v = vec_add( vec_sub(d16v, d25v), vec_add(d34v, vec_sra(d34v, onev)) );\ |
| \ |
| /* DST(0) = a0 + a1; */ \ |
| dct0v = vec_add( a0v, a1v ); \ |
| /* DST(1) = a4 + (a7>>2); */ \ |
| dct1v = vec_add( a4v, vec_sra(a7v, twov) ); \ |
| /* DST(2) = a2 + (a3>>1); */ \ |
| dct2v = vec_add( a2v, vec_sra(a3v, onev) ); \ |
| /* DST(3) = a5 + (a6>>2); */ \ |
| dct3v = vec_add( a5v, vec_sra(a6v, twov) ); \ |
| /* DST(4) = a0 - a1; */ \ |
| dct4v = vec_sub( a0v, a1v ); \ |
| /* DST(5) = a6 - (a5>>2); */ \ |
| dct5v = vec_sub( a6v, vec_sra(a5v, twov) ); \ |
| /* DST(6) = (a2>>1) - a3 ; */ \ |
| dct6v = vec_sub( vec_sra(a2v, onev), a3v ); \ |
| /* DST(7) = (a4>>2) - a7 ; */ \ |
| dct7v = vec_sub( vec_sra(a4v, twov), a7v ); \ |
| } |
| |
| |
| void x264_sub8x8_dct8_altivec( int16_t dct[8][8], uint8_t *pix1, uint8_t *pix2 ) |
| { |
| vec_u16_t onev = vec_splat_u16(1); |
| vec_u16_t twov = vec_add( onev, onev ); |
| |
| PREP_DIFF_8BYTEALIGNED; |
| |
| vec_s16_t dct0v, dct1v, dct2v, dct3v, |
| dct4v, dct5v, dct6v, dct7v; |
| |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct0v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct1v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct2v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct3v ); |
| |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct4v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct5v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct6v ); |
| VEC_DIFF_H_8BYTE_ALIGNED( pix1, FENC_STRIDE, pix2, FDEC_STRIDE, 8, dct7v ); |
| |
| DCT8_1D_ALTIVEC( dct0v, dct1v, dct2v, dct3v, |
| dct4v, dct5v, dct6v, dct7v ); |
| |
| vec_s16_t dct_tr0v, dct_tr1v, dct_tr2v, dct_tr3v, |
| dct_tr4v, dct_tr5v, dct_tr6v, dct_tr7v; |
| |
| VEC_TRANSPOSE_8(dct0v, dct1v, dct2v, dct3v, |
| dct4v, dct5v, dct6v, dct7v, |
| dct_tr0v, dct_tr1v, dct_tr2v, dct_tr3v, |
| dct_tr4v, dct_tr5v, dct_tr6v, dct_tr7v ); |
| |
| DCT8_1D_ALTIVEC( dct_tr0v, dct_tr1v, dct_tr2v, dct_tr3v, |
| dct_tr4v, dct_tr5v, dct_tr6v, dct_tr7v ); |
| |
| vec_st( dct_tr0v, 0, (signed short *)dct ); |
| vec_st( dct_tr1v, 16, (signed short *)dct ); |
| vec_st( dct_tr2v, 32, (signed short *)dct ); |
| vec_st( dct_tr3v, 48, (signed short *)dct ); |
| |
| vec_st( dct_tr4v, 64, (signed short *)dct ); |
| vec_st( dct_tr5v, 80, (signed short *)dct ); |
| vec_st( dct_tr6v, 96, (signed short *)dct ); |
| vec_st( dct_tr7v, 112, (signed short *)dct ); |
| } |
| |
| void x264_sub16x16_dct8_altivec( int16_t dct[4][8][8], uint8_t *pix1, uint8_t *pix2 ) |
| { |
| x264_sub8x8_dct8_altivec( dct[0], &pix1[0], &pix2[0] ); |
| x264_sub8x8_dct8_altivec( dct[1], &pix1[8], &pix2[8] ); |
| x264_sub8x8_dct8_altivec( dct[2], &pix1[8*FENC_STRIDE+0], &pix2[8*FDEC_STRIDE+0] ); |
| x264_sub8x8_dct8_altivec( dct[3], &pix1[8*FENC_STRIDE+8], &pix2[8*FDEC_STRIDE+8] ); |
| } |
| |
| |
| /**************************************************************************** |
| * IDCT transform: |
| ****************************************************************************/ |
| |
| #define IDCT_1D_ALTIVEC(s0, s1, s2, s3, d0, d1, d2, d3) \ |
| { \ |
| /* a0 = SRC(0) + SRC(2); */ \ |
| vec_s16_t a0v = vec_add(s0, s2); \ |
| /* a1 = SRC(0) - SRC(2); */ \ |
| vec_s16_t a1v = vec_sub(s0, s2); \ |
| /* a2 = (SRC(1)>>1) - SRC(3); */ \ |
| vec_s16_t a2v = vec_sub(vec_sra(s1, onev), s3); \ |
| /* a3 = (SRC(3)>>1) + SRC(1); */ \ |
| vec_s16_t a3v = vec_add(vec_sra(s3, onev), s1); \ |
| /* DST(0, a0 + a3); */ \ |
| d0 = vec_add(a0v, a3v); \ |
| /* DST(1, a1 + a2); */ \ |
| d1 = vec_add(a1v, a2v); \ |
| /* DST(2, a1 - a2); */ \ |
| d2 = vec_sub(a1v, a2v); \ |
| /* DST(3, a0 - a3); */ \ |
| d3 = vec_sub(a0v, a3v); \ |
| } |
| |
| #define VEC_LOAD_U8_ADD_S16_STORE_U8(va) \ |
| vdst_orig = vec_ld(0, dst); \ |
| vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask); \ |
| vdst_ss = (vec_s16_t)vec_mergeh(zero_u8v, vdst); \ |
| va = vec_add(va, vdst_ss); \ |
| va_u8 = vec_s16_to_u8(va); \ |
| va_u32 = vec_splat((vec_u32_t)va_u8, 0); \ |
| vec_ste(va_u32, element, (uint32_t*)dst); |
| |
| #define ALTIVEC_STORE4_SUM_CLIP(dest, idctv, perm_ldv) \ |
| { \ |
| /* unaligned load */ \ |
| vec_u8_t lv = vec_ld(0, dest); \ |
| vec_u8_t dstv = vec_perm(lv, zero_u8v, (vec_u8_t)perm_ldv); \ |
| vec_s16_t idct_sh6 = vec_sra(idctv, sixv); \ |
| vec_u16_t dst16 = (vec_u16_t)vec_mergeh(zero_u8v, dstv); \ |
| vec_s16_t idstsum = vec_adds(idct_sh6, (vec_s16_t)dst16); \ |
| vec_u8_t idstsum8 = vec_s16_to_u8(idstsum); \ |
| /* unaligned store */ \ |
| vec_u32_t bodyv = vec_splat((vec_u32_t)idstsum8, 0); \ |
| int element = ((unsigned long)dest & 0xf) >> 2; \ |
| vec_ste(bodyv, element, (uint32_t *)dest); \ |
| } |
| |
| void x264_add4x4_idct_altivec( uint8_t *dst, int16_t dct[4][4] ) |
| { |
| vec_u16_t onev = vec_splat_u16(1); |
| |
| dct[0][0] += 32; // rounding for the >>6 at the end |
| |
| vec_s16_t s0, s1, s2, s3; |
| |
| s0 = vec_ld( 0x00, (int16_t*)dct ); |
| s1 = vec_sld( s0, s0, 8 ); |
| s2 = vec_ld( 0x10, (int16_t*)dct ); |
| s3 = vec_sld( s2, s2, 8 ); |
| |
| vec_s16_t d0, d1, d2, d3; |
| IDCT_1D_ALTIVEC( s0, s1, s2, s3, d0, d1, d2, d3 ); |
| |
| vec_s16_t tr0, tr1, tr2, tr3; |
| |
| VEC_TRANSPOSE_4( d0, d1, d2, d3, tr0, tr1, tr2, tr3 ); |
| |
| vec_s16_t idct0, idct1, idct2, idct3; |
| IDCT_1D_ALTIVEC( tr0, tr1, tr2, tr3, idct0, idct1, idct2, idct3 ); |
| |
| vec_u8_t perm_ldv = vec_lvsl( 0, dst ); |
| vec_u16_t sixv = vec_splat_u16(6); |
| LOAD_ZERO; |
| |
| ALTIVEC_STORE4_SUM_CLIP( &dst[0*FDEC_STRIDE], idct0, perm_ldv ); |
| ALTIVEC_STORE4_SUM_CLIP( &dst[1*FDEC_STRIDE], idct1, perm_ldv ); |
| ALTIVEC_STORE4_SUM_CLIP( &dst[2*FDEC_STRIDE], idct2, perm_ldv ); |
| ALTIVEC_STORE4_SUM_CLIP( &dst[3*FDEC_STRIDE], idct3, perm_ldv ); |
| } |
| |
| void x264_add8x8_idct_altivec( uint8_t *p_dst, int16_t dct[4][4][4] ) |
| { |
| x264_add4x4_idct_altivec( &p_dst[0], dct[0] ); |
| x264_add4x4_idct_altivec( &p_dst[4], dct[1] ); |
| x264_add4x4_idct_altivec( &p_dst[4*FDEC_STRIDE+0], dct[2] ); |
| x264_add4x4_idct_altivec( &p_dst[4*FDEC_STRIDE+4], dct[3] ); |
| } |
| |
| void x264_add16x16_idct_altivec( uint8_t *p_dst, int16_t dct[16][4][4] ) |
| { |
| x264_add8x8_idct_altivec( &p_dst[0], &dct[0] ); |
| x264_add8x8_idct_altivec( &p_dst[8], &dct[4] ); |
| x264_add8x8_idct_altivec( &p_dst[8*FDEC_STRIDE+0], &dct[8] ); |
| x264_add8x8_idct_altivec( &p_dst[8*FDEC_STRIDE+8], &dct[12] ); |
| } |
| |
| #define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7)\ |
| {\ |
| /* a0 = SRC(0) + SRC(4); */ \ |
| vec_s16_t a0v = vec_add(s0, s4); \ |
| /* a2 = SRC(0) - SRC(4); */ \ |
| vec_s16_t a2v = vec_sub(s0, s4); \ |
| /* a4 = (SRC(2)>>1) - SRC(6); */ \ |
| vec_s16_t a4v = vec_sub(vec_sra(s2, onev), s6); \ |
| /* a6 = (SRC(6)>>1) + SRC(2); */ \ |
| vec_s16_t a6v = vec_add(vec_sra(s6, onev), s2); \ |
| /* b0 = a0 + a6; */ \ |
| vec_s16_t b0v = vec_add(a0v, a6v); \ |
| /* b2 = a2 + a4; */ \ |
| vec_s16_t b2v = vec_add(a2v, a4v); \ |
| /* b4 = a2 - a4; */ \ |
| vec_s16_t b4v = vec_sub(a2v, a4v); \ |
| /* b6 = a0 - a6; */ \ |
| vec_s16_t b6v = vec_sub(a0v, a6v); \ |
| /* a1 = SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \ |
| /* a1 = (SRC(5)-SRC(3)) - (SRC(7) + (SRC(7)>>1)); */ \ |
| vec_s16_t a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) );\ |
| /* a3 = SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \ |
| /* a3 = (SRC(7)+SRC(1)) - (SRC(3) + (SRC(3)>>1)); */ \ |
| vec_s16_t a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\ |
| /* a5 = SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \ |
| /* a5 = (SRC(7)-SRC(1)) + SRC(5) + (SRC(5)>>1); */ \ |
| vec_s16_t a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\ |
| /* a7 = SRC(5)+SRC(3) + SRC(1) + (SRC(1)>>1); */ \ |
| vec_s16_t a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\ |
| /* b1 = (a7>>2) + a1; */ \ |
| vec_s16_t b1v = vec_add( vec_sra(a7v, twov), a1v); \ |
| /* b3 = a3 + (a5>>2); */ \ |
| vec_s16_t b3v = vec_add(a3v, vec_sra(a5v, twov)); \ |
| /* b5 = (a3>>2) - a5; */ \ |
| vec_s16_t b5v = vec_sub( vec_sra(a3v, twov), a5v); \ |
| /* b7 = a7 - (a1>>2); */ \ |
| vec_s16_t b7v = vec_sub( a7v, vec_sra(a1v, twov)); \ |
| /* DST(0, b0 + b7); */ \ |
| d0 = vec_add(b0v, b7v); \ |
| /* DST(1, b2 + b5); */ \ |
| d1 = vec_add(b2v, b5v); \ |
| /* DST(2, b4 + b3); */ \ |
| d2 = vec_add(b4v, b3v); \ |
| /* DST(3, b6 + b1); */ \ |
| d3 = vec_add(b6v, b1v); \ |
| /* DST(4, b6 - b1); */ \ |
| d4 = vec_sub(b6v, b1v); \ |
| /* DST(5, b4 - b3); */ \ |
| d5 = vec_sub(b4v, b3v); \ |
| /* DST(6, b2 - b5); */ \ |
| d6 = vec_sub(b2v, b5v); \ |
| /* DST(7, b0 - b7); */ \ |
| d7 = vec_sub(b0v, b7v); \ |
| } |
| |
| #define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel)\ |
| {\ |
| /* unaligned load */ \ |
| vec_u8_t hv = vec_ld( 0, dest ); \ |
| vec_u8_t lv = vec_ld( 7, dest ); \ |
| vec_u8_t dstv = vec_perm( hv, lv, (vec_u8_t)perm_ldv ); \ |
| vec_s16_t idct_sh6 = vec_sra(idctv, sixv); \ |
| vec_u16_t dst16 = (vec_u16_t)vec_mergeh(zero_u8v, dstv); \ |
| vec_s16_t idstsum = vec_adds(idct_sh6, (vec_s16_t)dst16); \ |
| vec_u8_t idstsum8 = vec_packsu(zero_s16v, idstsum); \ |
| /* unaligned store */ \ |
| vec_u8_t bodyv = vec_perm( idstsum8, idstsum8, perm_stv );\ |
| vec_u8_t edgelv = vec_perm( sel, zero_u8v, perm_stv ); \ |
| lv = vec_sel( lv, bodyv, edgelv ); \ |
| vec_st( lv, 7, dest ); \ |
| hv = vec_ld( 0, dest ); \ |
| vec_u8_t edgehv = vec_perm( zero_u8v, sel, perm_stv ); \ |
| hv = vec_sel( hv, bodyv, edgehv ); \ |
| vec_st( hv, 0, dest ); \ |
| } |
| |
| void x264_add8x8_idct8_altivec( uint8_t *dst, int16_t dct[8][8] ) |
| { |
| vec_u16_t onev = vec_splat_u16(1); |
| vec_u16_t twov = vec_splat_u16(2); |
| |
| dct[0][0] += 32; // rounding for the >>6 at the end |
| |
| vec_s16_t s0, s1, s2, s3, s4, s5, s6, s7; |
| |
| s0 = vec_ld(0x00, (int16_t*)dct); |
| s1 = vec_ld(0x10, (int16_t*)dct); |
| s2 = vec_ld(0x20, (int16_t*)dct); |
| s3 = vec_ld(0x30, (int16_t*)dct); |
| s4 = vec_ld(0x40, (int16_t*)dct); |
| s5 = vec_ld(0x50, (int16_t*)dct); |
| s6 = vec_ld(0x60, (int16_t*)dct); |
| s7 = vec_ld(0x70, (int16_t*)dct); |
| |
| vec_s16_t d0, d1, d2, d3, d4, d5, d6, d7; |
| IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7); |
| |
| vec_s16_t tr0, tr1, tr2, tr3, tr4, tr5, tr6, tr7; |
| |
| VEC_TRANSPOSE_8( d0, d1, d2, d3, d4, d5, d6, d7, |
| tr0, tr1, tr2, tr3, tr4, tr5, tr6, tr7); |
| |
| vec_s16_t idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7; |
| IDCT8_1D_ALTIVEC(tr0, tr1, tr2, tr3, tr4, tr5, tr6, tr7, |
| idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7); |
| |
| vec_u8_t perm_ldv = vec_lvsl(0, dst); |
| vec_u8_t perm_stv = vec_lvsr(8, dst); |
| vec_u16_t sixv = vec_splat_u16(6); |
| const vec_u8_t sel = (vec_u8_t) CV(0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1); |
| LOAD_ZERO; |
| |
| ALTIVEC_STORE_SUM_CLIP(&dst[0*FDEC_STRIDE], idct0, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[1*FDEC_STRIDE], idct1, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[2*FDEC_STRIDE], idct2, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[3*FDEC_STRIDE], idct3, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[4*FDEC_STRIDE], idct4, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[5*FDEC_STRIDE], idct5, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[6*FDEC_STRIDE], idct6, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[7*FDEC_STRIDE], idct7, perm_ldv, perm_stv, sel); |
| } |
| |
| void x264_add16x16_idct8_altivec( uint8_t *dst, int16_t dct[4][8][8] ) |
| { |
| x264_add8x8_idct8_altivec( &dst[0], dct[0] ); |
| x264_add8x8_idct8_altivec( &dst[8], dct[1] ); |
| x264_add8x8_idct8_altivec( &dst[8*FDEC_STRIDE+0], dct[2] ); |
| x264_add8x8_idct8_altivec( &dst[8*FDEC_STRIDE+8], dct[3] ); |
| } |
| |
| void x264_zigzag_scan_4x4_frame_altivec( int16_t level[16], int16_t dct[4][4] ) |
| { |
| vec_s16_t dct0v, dct1v; |
| vec_s16_t tmp0v, tmp1v; |
| |
| dct0v = vec_ld(0x00, (int16_t*)dct); |
| dct1v = vec_ld(0x10, (int16_t*)dct); |
| |
| const vec_u8_t sel0 = (vec_u8_t) CV(0,1,8,9,2,3,4,5,10,11,16,17,24,25,18,19); |
| const vec_u8_t sel1 = (vec_u8_t) CV(12,13,6,7,14,15,20,21,26,27,28,29,22,23,30,31); |
| |
| tmp0v = vec_perm( dct0v, dct1v, sel0 ); |
| tmp1v = vec_perm( dct0v, dct1v, sel1 ); |
| |
| vec_st( tmp0v, 0x00, level ); |
| vec_st( tmp1v, 0x10, level ); |
| } |
| |
| void x264_zigzag_scan_4x4_field_altivec( int16_t level[16], int16_t dct[4][4] ) |
| { |
| vec_s16_t dct0v, dct1v; |
| vec_s16_t tmp0v, tmp1v; |
| |
| dct0v = vec_ld(0x00, (int16_t*)dct); |
| dct1v = vec_ld(0x10, (int16_t*)dct); |
| |
| const vec_u8_t sel0 = (vec_u8_t) CV(0,1,2,3,8,9,4,5,6,7,10,11,12,13,14,15); |
| |
| tmp0v = vec_perm( dct0v, dct1v, sel0 ); |
| tmp1v = dct1v; |
| |
| vec_st( tmp0v, 0x00, level ); |
| vec_st( tmp1v, 0x10, level ); |
| } |
| |
