dct.c
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/*****************************************************************************
* dct.c: ppc transform and zigzag
*****************************************************************************
* Copyright (C) 2003-2024 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.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#include "common/common.h"
#include "ppccommon.h"
#include "dct.h"
#if !HIGH_BIT_DEPTH
#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[16], 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, dct);
vec_st(vec_perm(tmp2v, tmp3v, permHighv), 16, dct);
}
void x264_sub8x8_dct_altivec( int16_t dct[4][16], 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, *dct);
vec_st(vec_perm(tmp2v, tmp3v, permHighv), 16, *dct);
vec_st(vec_perm(tmp4v, tmp5v, permHighv), 32, *dct);
vec_st(vec_perm(tmp6v, tmp7v, permHighv), 48, *dct);
vec_st(vec_perm(tmp0v, tmp1v, permLowv), 64, *dct);
vec_st(vec_perm(tmp2v, tmp3v, permLowv), 80, *dct);
vec_st(vec_perm(tmp4v, tmp5v, permLowv), 96, *dct);
vec_st(vec_perm(tmp6v, tmp7v, permLowv), 112, *dct);
}
void x264_sub16x16_dct_altivec( int16_t dct[16][16], 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:
***************************************************************************/
static void pix_diff( uint8_t *p1, uint8_t *p2, vec_s16_t *diff, int i )
{
vec_s16_t pix1v, pix2v, tmp[4];
vec_u8_t pix1v8, pix2v8;
LOAD_ZERO;
for( int j = 0; j < 4; j++ )
{
pix1v8 = vec_vsx_ld( 0, p1 );
pix2v8 = vec_vsx_ld( 0, p2 );
pix1v = vec_u8_to_s16_h( pix1v8 );
pix2v = vec_u8_to_s16_h( pix2v8 );
tmp[j] = vec_sub( pix1v, pix2v );
p1 += FENC_STRIDE;
p2 += FDEC_STRIDE;
}
diff[i] = vec_add( tmp[0], tmp[1] );
diff[i] = vec_add( diff[i], tmp[2] );
diff[i] = vec_add( diff[i], tmp[3] );
}
void x264_sub8x8_dct_dc_altivec( int16_t dct[4], uint8_t *pix1, uint8_t *pix2 )
{
vec_s16_t diff[2], tmp;
vec_s32_t sum[2];
vec_s32_t zero32 = vec_splat_s32(0);
vec_u8_t mask = { 0x00, 0x01, 0x00, 0x01, 0x04, 0x05, 0x04, 0x05,
0x02, 0x03, 0x02, 0x03, 0x06, 0x07, 0x06, 0x07 };
pix_diff( &pix1[0], &pix2[0], diff, 0 );
pix_diff( &pix1[4*FENC_STRIDE], &pix2[4*FDEC_STRIDE], diff, 1 );
sum[0] = vec_sum4s( diff[0], zero32 );
sum[1] = vec_sum4s( diff[1], zero32 );
diff[0] = vec_packs( sum[0], sum[1] );
sum[0] = vec_sum4s( diff[0], zero32 );
diff[0] = vec_packs( sum[0], zero32 );
diff[0] = vec_perm( diff[0], diff[0], mask ); // 0 0 2 2 1 1 3 3
tmp = xxpermdi( diff[0], diff[0], 2 ); // 1 1 3 3 0 0 2 2
diff[1] = vec_add( diff[0], tmp ); // 0+1 0+1 2+3 2+3
diff[0] = vec_sub( diff[0], tmp ); // 0-1 0-1 2-3 2-3
tmp = vec_mergeh( diff[1], diff[0] ); // 0+1 0-1 0+1 0-1 2+3 2-3 2+3 2-3
diff[0] = xxpermdi( tmp, tmp, 2 ); // 2+3 2-3 2+3 2-3
diff[1] = vec_add( tmp, diff[0] ); // 0+1+2+3 0-1+2+3
diff[0] = vec_sub( tmp, diff[0] ); // 0+1-2-3 0-1-2+3
diff[0] = vec_mergeh( diff[1], diff[0] );
diff[1] = vec_ld( 0, dct );
diff[0] = xxpermdi( diff[0], diff[1], 0 );
vec_st( diff[0], 0, dct );
}
/* 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[64], 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, dct );
vec_st( dct_tr1v, 16, dct );
vec_st( dct_tr2v, 32, dct );
vec_st( dct_tr3v, 48, dct );
vec_st( dct_tr4v, 64, dct );
vec_st( dct_tr5v, 80, dct );
vec_st( dct_tr6v, 96, dct );
vec_st( dct_tr7v, 112, dct );
}
void x264_sub16x16_dct8_altivec( int16_t dct[4][64], 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 ALTIVEC_STORE8_DC_SUM_CLIP(dest, dcv) \
{ \
/* unaligned load */ \
vec_u8_t dstv = vec_vsx_ld( 0, dest ); \
vec_s16_t dcvsum = vec_adds( dcv, vec_u8_to_s16_h( dstv ) ); \
vec_u8_t dcvsum8 = vec_packsu( dcvsum, vec_u8_to_s16_l( dstv ) ); \
/* unaligned store */ \
vec_vsx_st( dcvsum8, 0, dest ); \
}
void x264_add8x8_idct_dc_altivec( uint8_t *p_dst, int16_t dct[4] )
{
vec_s16_t dcv0, dcv1;
vec_s16_t v32 = vec_sl( vec_splat_s16( 8 ), vec_splat_u16( 2 ) );
vec_u16_t v6 = vec_splat_u16( 6 );
vec_s16_t dctv = vec_ld( 0, dct );
vec_u8_t dstv0, dstv1, dstv2, dstv3, dstv4, dstv5, dstv6, dstv7;
vec_s16_t dcvsum0, dcvsum1, dcvsum2, dcvsum3, dcvsum4, dcvsum5, dcvsum6, dcvsum7;
vec_u8_t dcvsum8_0, dcvsum8_1, dcvsum8_2, dcvsum8_3, dcvsum8_4, dcvsum8_5, dcvsum8_6, dcvsum8_7;
LOAD_ZERO;
dctv = vec_sra( vec_add( dctv, v32 ), v6 );
dcv1 = (vec_s16_t)vec_mergeh( dctv, dctv );
dcv0 = (vec_s16_t)vec_mergeh( (vec_s32_t)dcv1, (vec_s32_t)dcv1 );
dcv1 = (vec_s16_t)vec_mergel( (vec_s32_t)dcv1, (vec_s32_t)dcv1 );
dstv0 = vec_vsx_ld( 0, p_dst );
dstv4 = vec_vsx_ld( 0, p_dst + 4*FDEC_STRIDE );
dstv1 = vec_vsx_ld( 0, p_dst + 1*FDEC_STRIDE );
dstv5 = vec_vsx_ld( 0, p_dst + 4*FDEC_STRIDE + 1*FDEC_STRIDE );
dstv2 = vec_vsx_ld( 0, p_dst + 2*FDEC_STRIDE);
dstv6 = vec_vsx_ld( 0, p_dst + 4*FDEC_STRIDE + 2*FDEC_STRIDE );
dstv3 = vec_vsx_ld( 0, p_dst + 3*FDEC_STRIDE);
dstv7 = vec_vsx_ld( 0, p_dst + 4*FDEC_STRIDE + 3*FDEC_STRIDE );
vec_s16_t s0 = vec_u8_to_s16_h( dstv0 );
vec_s16_t s1 = vec_u8_to_s16_h( dstv4 );
vec_s16_t s2 = vec_u8_to_s16_h( dstv1 );
vec_s16_t s3 = vec_u8_to_s16_h( dstv5 );
vec_s16_t s4 = vec_u8_to_s16_h( dstv2 );
vec_s16_t s5 = vec_u8_to_s16_h( dstv6 );
vec_s16_t s6 = vec_u8_to_s16_h( dstv3 );
vec_s16_t s7 = vec_u8_to_s16_h( dstv7 );
dcvsum0 = vec_adds( dcv0, s0 );
dcvsum4 = vec_adds( dcv1, s1 );
dcvsum1 = vec_adds( dcv0, s2 );
dcvsum5 = vec_adds( dcv1, s3 );
dcvsum2 = vec_adds( dcv0, s4 );
dcvsum6 = vec_adds( dcv1, s5 );
dcvsum3 = vec_adds( dcv0, s6 );
dcvsum7 = vec_adds( dcv1, s7 );
dcvsum8_0 = vec_packsu( dcvsum0, vec_u8_to_s16_l( dstv0 ) );
dcvsum8_1 = vec_packsu( dcvsum1, vec_u8_to_s16_l( dstv1 ) );
dcvsum8_2 = vec_packsu( dcvsum2, vec_u8_to_s16_l( dstv2 ) );
dcvsum8_3 = vec_packsu( dcvsum3, vec_u8_to_s16_l( dstv3 ) );
dcvsum8_4 = vec_packsu( dcvsum4, vec_u8_to_s16_l( dstv4 ) );
dcvsum8_5 = vec_packsu( dcvsum5, vec_u8_to_s16_l( dstv5 ) );
dcvsum8_6 = vec_packsu( dcvsum6, vec_u8_to_s16_l( dstv6 ) );
dcvsum8_7 = vec_packsu( dcvsum7, vec_u8_to_s16_l( dstv7 ) );
vec_vsx_st( dcvsum8_0, 0, p_dst );
vec_vsx_st( dcvsum8_4, 0, p_dst + 4*FDEC_STRIDE );
vec_vsx_st( dcvsum8_1, 0, p_dst + 1*FDEC_STRIDE );
vec_vsx_st( dcvsum8_5, 0, p_dst + 4*FDEC_STRIDE + 1*FDEC_STRIDE );
vec_vsx_st( dcvsum8_2, 0, p_dst + 2*FDEC_STRIDE );
vec_vsx_st( dcvsum8_6, 0, p_dst + 4*FDEC_STRIDE + 2*FDEC_STRIDE );
vec_vsx_st( dcvsum8_3, 0, p_dst + 3*FDEC_STRIDE );
vec_vsx_st( dcvsum8_7, 0, p_dst + 4*FDEC_STRIDE + 3*FDEC_STRIDE );
}
#define LOAD16 \
dstv0 = vec_ld( 0, p_dst ); \
dstv1 = vec_ld( 0, p_dst + 1*FDEC_STRIDE ); \
dstv2 = vec_ld( 0, p_dst + 2*FDEC_STRIDE ); \
dstv3 = vec_ld( 0, p_dst + 3*FDEC_STRIDE );
#define SUM16 \
dcvsum0 = vec_adds( dcv0, vec_u8_to_s16_h( dstv0 ) ); \
dcvsum4 = vec_adds( dcv1, vec_u8_to_s16_l( dstv0 ) ); \
dcvsum1 = vec_adds( dcv0, vec_u8_to_s16_h( dstv1 ) ); \
dcvsum5 = vec_adds( dcv1, vec_u8_to_s16_l( dstv1 ) ); \
dcvsum2 = vec_adds( dcv0, vec_u8_to_s16_h( dstv2 ) ); \
dcvsum6 = vec_adds( dcv1, vec_u8_to_s16_l( dstv2 ) ); \
dcvsum3 = vec_adds( dcv0, vec_u8_to_s16_h( dstv3 ) ); \
dcvsum7 = vec_adds( dcv1, vec_u8_to_s16_l( dstv3 ) ); \
dcvsum8_0 = vec_packsu( dcvsum0, dcvsum4 ); \
dcvsum8_1 = vec_packsu( dcvsum1, dcvsum5 ); \
dcvsum8_2 = vec_packsu( dcvsum2, dcvsum6 ); \
dcvsum8_3 = vec_packsu( dcvsum3, dcvsum7 );
#define STORE16 \
vec_st( dcvsum8_0, 0, p_dst ); \
vec_st( dcvsum8_1, 0, p_dst + 1*FDEC_STRIDE ); \
vec_st( dcvsum8_2, 0, p_dst + 2*FDEC_STRIDE ); \
vec_st( dcvsum8_3, 0, p_dst + 3*FDEC_STRIDE );
void x264_add16x16_idct_dc_altivec( uint8_t *p_dst, int16_t dct[16] )
{
vec_s16_t dcv0, dcv1;
vec_s16_t v32 = vec_sl( vec_splat_s16( 8 ), vec_splat_u16( 2 ) );
vec_u16_t v6 = vec_splat_u16( 6 );
vec_u8_t dstv0, dstv1, dstv2, dstv3;
vec_s16_t dcvsum0, dcvsum1, dcvsum2, dcvsum3, dcvsum4, dcvsum5, dcvsum6, dcvsum7;
vec_u8_t dcvsum8_0, dcvsum8_1, dcvsum8_2, dcvsum8_3;
LOAD_ZERO;
for( int i = 0; i < 2; i++ )
{
vec_s16_t dctv = vec_ld( 0, dct );
dctv = vec_sra( vec_add( dctv, v32 ), v6 );
dcv1 = (vec_s16_t)vec_mergeh( dctv, dctv );
dcv0 = (vec_s16_t)vec_mergeh( (vec_s32_t)dcv1, (vec_s32_t)dcv1 );
dcv1 = (vec_s16_t)vec_mergel( (vec_s32_t)dcv1, (vec_s32_t)dcv1 );
LOAD16;
SUM16;
STORE16;
p_dst += 4*FDEC_STRIDE;
dcv1 = (vec_s16_t)vec_mergel( dctv, dctv );
dcv0 = (vec_s16_t)vec_mergeh( (vec_s32_t)dcv1, (vec_s32_t)dcv1 );
dcv1 = (vec_s16_t)vec_mergel( (vec_s32_t)dcv1, (vec_s32_t)dcv1 );
LOAD16;
SUM16;
STORE16;
dct += 8;
p_dst += 4*FDEC_STRIDE;
}
}
#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) \
{ \
/* unaligned load */ \
vec_u8_t dstv = vec_vsx_ld(0, dest); \
vec_s16_t idct_sh6 = vec_sra(idctv, sixv); \
vec_u16_t dst16 = vec_u8_to_u16_h(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[16] )
{
vec_u16_t onev = vec_splat_u16(1);
dct[0] += 32; // rounding for the >>6 at the end
vec_s16_t s0, s1, s2, s3;
s0 = vec_ld( 0x00, dct );
s1 = vec_sld( s0, s0, 8 );
s2 = vec_ld( 0x10, 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_u16_t sixv = vec_splat_u16(6);
LOAD_ZERO;
ALTIVEC_STORE4_SUM_CLIP( &dst[0*FDEC_STRIDE], idct0 );
ALTIVEC_STORE4_SUM_CLIP( &dst[1*FDEC_STRIDE], idct1 );
ALTIVEC_STORE4_SUM_CLIP( &dst[2*FDEC_STRIDE], idct2 );
ALTIVEC_STORE4_SUM_CLIP( &dst[3*FDEC_STRIDE], idct3 );
}
void x264_add8x8_idct_altivec( uint8_t *p_dst, int16_t dct[4][16] )
{
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][16] )
{
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) \
{ \
vec_s16_t idct_sh6 = vec_sra( idctv, sixv ); \
/* unaligned load */ \
vec_u8_t dstv = vec_vsx_ld( 0, dest ); \
vec_s16_t idstsum = vec_adds( idct_sh6, vec_u8_to_s16_h( dstv ) ); \
vec_u8_t idstsum8 = vec_packsu( idstsum, vec_u8_to_s16_l( dstv ) ); \
/* unaligned store */ \
vec_vsx_st( idstsum8, 0, dest ); \
}
void x264_add8x8_idct8_altivec( uint8_t *dst, int16_t dct[64] )
{
vec_u16_t onev = vec_splat_u16(1);
vec_u16_t twov = vec_splat_u16(2);
dct[0] += 32; // rounding for the >>6 at the end
vec_s16_t s0, s1, s2, s3, s4, s5, s6, s7;
s0 = vec_ld(0x00, dct);
s1 = vec_ld(0x10, dct);
s2 = vec_ld(0x20, dct);
s3 = vec_ld(0x30, dct);
s4 = vec_ld(0x40, dct);
s5 = vec_ld(0x50, dct);
s6 = vec_ld(0x60, dct);
s7 = vec_ld(0x70, 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_u16_t sixv = vec_splat_u16(6);
LOAD_ZERO;
ALTIVEC_STORE_SUM_CLIP(&dst[0*FDEC_STRIDE], idct0);
ALTIVEC_STORE_SUM_CLIP(&dst[1*FDEC_STRIDE], idct1);
ALTIVEC_STORE_SUM_CLIP(&dst[2*FDEC_STRIDE], idct2);
ALTIVEC_STORE_SUM_CLIP(&dst[3*FDEC_STRIDE], idct3);
ALTIVEC_STORE_SUM_CLIP(&dst[4*FDEC_STRIDE], idct4);
ALTIVEC_STORE_SUM_CLIP(&dst[5*FDEC_STRIDE], idct5);
ALTIVEC_STORE_SUM_CLIP(&dst[6*FDEC_STRIDE], idct6);
ALTIVEC_STORE_SUM_CLIP(&dst[7*FDEC_STRIDE], idct7);
}
void x264_add16x16_idct8_altivec( uint8_t *dst, int16_t dct[4][64] )
{
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[16] )
{
vec_s16_t dct0v, dct1v;
vec_s16_t tmp0v, tmp1v;
dct0v = vec_ld(0x00, dct);
dct1v = vec_ld(0x10, 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[16] )
{
vec_s16_t dct0v, dct1v;
vec_s16_t tmp0v, tmp1v;
dct0v = vec_ld(0x00, dct);
dct1v = vec_ld(0x10, 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 );
}
void x264_zigzag_scan_8x8_frame_altivec( int16_t level[64], int16_t dct[64] )
{
vec_s16_t tmpv[6];
vec_s16_t dct0v = vec_ld( 0*16, dct );
vec_s16_t dct1v = vec_ld( 1*16, dct );
vec_s16_t dct2v = vec_ld( 2*16, dct );
vec_s16_t dct3v = vec_ld( 3*16, dct );
vec_s16_t dct4v = vec_ld( 4*16, dct );
vec_s16_t dct5v = vec_ld( 5*16, dct );
vec_s16_t dct6v = vec_ld( 6*16, dct );
vec_s16_t dct7v = vec_ld( 7*16, dct );
const vec_u8_t mask1[14] = {
{ 0x00, 0x01, 0x02, 0x03, 0x12, 0x13, 0x14, 0x15, 0x0A, 0x0B, 0x04, 0x05, 0x06, 0x07, 0x0C, 0x0D },
{ 0x0A, 0x0B, 0x0C, 0x0D, 0x00, 0x00, 0x0E, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x10, 0x11, 0x12, 0x13 },
{ 0x00, 0x01, 0x02, 0x03, 0x18, 0x19, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x18, 0x19, 0x16, 0x17, 0x0C, 0x0D, 0x0E, 0x0F },
{ 0x00, 0x00, 0x14, 0x15, 0x18, 0x19, 0x02, 0x03, 0x04, 0x05, 0x08, 0x09, 0x06, 0x07, 0x12, 0x13 },
{ 0x12, 0x13, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F },
{ 0x1A, 0x1B, 0x10, 0x11, 0x08, 0x09, 0x04, 0x05, 0x02, 0x03, 0x0C, 0x0D, 0x14, 0x15, 0x18, 0x19 },
{ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x0A, 0x0B },
{ 0x00, 0x01, 0x02, 0x03, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x06, 0x07, 0x04, 0x05, 0x08, 0x09 },
{ 0x00, 0x11, 0x16, 0x17, 0x18, 0x19, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x1A, 0x1B },
{ 0x02, 0x03, 0x18, 0x19, 0x16, 0x17, 0x1A, 0x1B, 0x1C, 0x1D, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09 },
{ 0x08, 0x09, 0x0A, 0x0B, 0x06, 0x07, 0x0E, 0x0F, 0x10, 0x11, 0x00, 0x00, 0x12, 0x13, 0x14, 0x15 },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x16, 0x17, 0x0C, 0x0D, 0x0E, 0x0F },
{ 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x08, 0x09, 0x06, 0x07, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F }
};
tmpv[0] = vec_mergeh( dct0v, dct1v );
tmpv[1] = vec_mergeh( dct2v, dct3v );
tmpv[2] = (vec_s16_t)vec_mergeh( (vec_s32_t)tmpv[0], (vec_s32_t)tmpv[1] );
tmpv[3] = vec_perm( tmpv[2], dct0v, mask1[0] );
vec_st( tmpv[3], 0*16, level );
tmpv[4] = vec_mergeh( dct4v, dct5v );
tmpv[3] = vec_perm( tmpv[0], tmpv[4], mask1[1] );
tmpv[3] = vec_perm( tmpv[3], dct0v, mask1[2] );
tmpv[3] = vec_perm( tmpv[3], tmpv[1], mask1[3] );
vec_st( tmpv[3], 1*16, level );
tmpv[3] = vec_mergel( dct0v, dct1v );
tmpv[1] = vec_mergel( tmpv[1], dct2v );
tmpv[5] = vec_perm( tmpv[3], tmpv[1], mask1[4] );
tmpv[5] = vec_perm( tmpv[5], dct4v, mask1[5] );
vec_st( tmpv[5], 2*16, level );
tmpv[2] = vec_mergeh( dct5v, dct6v );
tmpv[5] = vec_mergeh( tmpv[2], dct7v );
tmpv[4] = vec_mergel( tmpv[4], tmpv[1] );
tmpv[0] = vec_perm( tmpv[5], tmpv[4], mask1[6] );
vec_st( tmpv[0], 3*16, level );
tmpv[1] = vec_mergel( dct2v, dct3v );
tmpv[0] = vec_mergel( dct4v, dct5v );
tmpv[4] = vec_perm( tmpv[1], tmpv[0], mask1[7] );
tmpv[3] = vec_perm( tmpv[4], tmpv[3], mask1[8] );
vec_st( tmpv[3], 4*16, level );
tmpv[3] = vec_mergeh( dct6v, dct7v );
tmpv[2] = vec_mergel( dct3v, dct4v );
tmpv[2] = vec_perm( tmpv[2], dct5v, mask1[9] );
tmpv[3] = vec_perm( tmpv[2], tmpv[3], mask1[10] );
vec_st( tmpv[3], 5*16, level );
tmpv[1] = vec_mergel( tmpv[1], tmpv[2] );
tmpv[2] = vec_mergel( dct6v, dct7v );
tmpv[1] = vec_perm( tmpv[1], tmpv[2], mask1[11] );
tmpv[1] = vec_perm( tmpv[1], dct7v, mask1[12] );
vec_st( tmpv[1], 6*16, level );
tmpv[2] = vec_perm( tmpv[2], tmpv[0], mask1[13] );
vec_st( tmpv[2], 7*16, level );
}
void x264_zigzag_interleave_8x8_cavlc_altivec( int16_t *dst, int16_t *src, uint8_t *nnz )
{
vec_s16_t tmpv[8];
vec_s16_t merge[2];
vec_s16_t permv[3];
vec_s16_t orv[4];
vec_s16_t src0v = vec_ld( 0*16, src );
vec_s16_t src1v = vec_ld( 1*16, src );
vec_s16_t src2v = vec_ld( 2*16, src );
vec_s16_t src3v = vec_ld( 3*16, src );
vec_s16_t src4v = vec_ld( 4*16, src );
vec_s16_t src5v = vec_ld( 5*16, src );
vec_s16_t src6v = vec_ld( 6*16, src );
vec_s16_t src7v = vec_ld( 7*16, src );
vec_u8_t pack;
vec_u8_t nnzv = vec_vsx_ld( 0, nnz );
vec_u8_t shift = vec_splat_u8( 7 );
LOAD_ZERO;
const vec_u8_t mask[3] = {
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
{ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F },
{ 0x10, 0x11, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x12, 0x13, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F }
};
tmpv[0] = vec_mergeh( src0v, src1v );
tmpv[1] = vec_mergel( src0v, src1v );
tmpv[2] = vec_mergeh( src2v, src3v );
tmpv[3] = vec_mergel( src2v, src3v );
tmpv[4] = vec_mergeh( src4v, src5v );
tmpv[5] = vec_mergel( src4v, src5v );
tmpv[6] = vec_mergeh( src6v, src7v );
tmpv[7] = vec_mergel( src6v, src7v );
merge[0] = vec_mergeh( tmpv[0], tmpv[1] );
merge[1] = vec_mergeh( tmpv[2], tmpv[3] );
permv[0] = vec_perm( merge[0], merge[1], mask[0] );
permv[1] = vec_perm( merge[0], merge[1], mask[1] );
vec_st( permv[0], 0*16, dst );
merge[0] = vec_mergeh( tmpv[4], tmpv[5] );
merge[1] = vec_mergeh( tmpv[6], tmpv[7] );
permv[0] = vec_perm( merge[0], merge[1], mask[0] );
permv[2] = vec_perm( merge[0], merge[1], mask[1] );
vec_st( permv[0], 1*16, dst );
vec_st( permv[1], 2*16, dst );
vec_st( permv[2], 3*16, dst );
merge[0] = vec_mergel( tmpv[0], tmpv[1] );
merge[1] = vec_mergel( tmpv[2], tmpv[3] );
permv[0] = vec_perm( merge[0], merge[1], mask[0] );
permv[1] = vec_perm( merge[0], merge[1], mask[1] );
vec_st( permv[0], 4*16, dst );
merge[0] = vec_mergel( tmpv[4], tmpv[5] );
merge[1] = vec_mergel( tmpv[6], tmpv[7] );
permv[0] = vec_perm( merge[0], merge[1], mask[0] );
permv[2] = vec_perm( merge[0], merge[1], mask[1] );
vec_st( permv[0], 5*16, dst );
vec_st( permv[1], 6*16, dst );
vec_st( permv[2], 7*16, dst );
orv[0] = vec_or( src0v, src1v );
orv[1] = vec_or( src2v, src3v );
orv[2] = vec_or( src4v, src5v );
orv[3] = vec_or( src6v, src7v );
permv[0] = vec_or( orv[0], orv[1] );
permv[1] = vec_or( orv[2], orv[3] );
permv[0] = vec_or( permv[0], permv[1] );
permv[1] = vec_perm( permv[0], permv[0], mask[1] );
permv[0] = vec_or( permv[0], permv[1] );
pack = (vec_u8_t)vec_packs( permv[0], permv[0] );
pack = (vec_u8_t)vec_cmpeq( pack, zerov );
pack = vec_nor( pack, zerov );
pack = vec_sr( pack, shift );
nnzv = vec_perm( nnzv, pack, mask[2] );
vec_st( nnzv, 0, nnz );
}
#endif // !HIGH_BIT_DEPTH