dct.c
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上传日期:2022-06-04
资源大小:8887k
文件大小:21k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*****************************************************************************
- * 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.
- *****************************************************************************/
- #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 );
- }