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ffmpeg/libavcodec/libpostproc/postprocess_altivec_template.c

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altivec optimizations and horizontal filter fix by (Romain Dolbeau <dolbeau at irisa dot fr>) Originally committed as revision 3162 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-05-26 20:15:15 +00:00
/*
AltiVec optimizations (C) 2004 Romain Dolbeau <romain@dolbeau.org>
based on code by Copyright (C) 2001-2003 Michael Niedermayer (michaelni@gmx.at)
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef CONFIG_DARWIN
#define AVV(x...) (x)
#else
#define AVV(x...) {x}
#endif
static inline int vertClassify_altivec(uint8_t src[], int stride, PPContext *c) {
/*
this code makes no assumption on src or stride.
One could remove the recomputation of the perm
vector by assuming (stride % 16) == 0, unfortunately
this is not always true.
*/
register int y;
short __attribute__ ((aligned(16))) data[8];
int numEq;
uint8_t *src2 = src;
vector signed short v_dcOffset;
vector signed short v2QP;
vector unsigned short v4QP;
vector unsigned short v_dcThreshold;
int two_vectors = ((((unsigned long)src2 % 16) > 8) || (stride % 16)) ? 1 : 0;
const vector signed int zero = vec_splat_s32(0);
const vector signed short mask = vec_splat_s16(1);
vector signed int v_numEq = vec_splat_s32(0);
data[0] = ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1;
data[1] = data[0] * 2 + 1;
data[2] = c->QP * 2;
data[3] = c->QP * 4;
vector signed short v_data = vec_ld(0, data);
v_dcOffset = vec_splat(v_data, 0);
v_dcThreshold = (vector unsigned short)vec_splat(v_data, 1);
v2QP = vec_splat(v_data, 2);
v4QP = (vector unsigned short)vec_splat(v_data, 3);
src2 += stride * 4;
#define LOAD_LINE(i) \
register int j##i = i * stride; \
vector unsigned char perm##i = vec_lvsl(j##i, src2); \
const vector unsigned char v_srcA1##i = vec_ld(j##i, src2); \
vector unsigned char v_srcA2##i; \
if (two_vectors) \
v_srcA2##i = vec_ld(j##i + 16, src2); \
const vector unsigned char v_srcA##i = \
vec_perm(v_srcA1##i, v_srcA2##i, perm##i); \
vector signed short v_srcAss##i = \
(vector signed short)vec_mergeh((vector signed char)zero, \
(vector signed char)v_srcA##i)
LOAD_LINE(0);
LOAD_LINE(1);
LOAD_LINE(2);
LOAD_LINE(3);
LOAD_LINE(4);
LOAD_LINE(5);
LOAD_LINE(6);
LOAD_LINE(7);
#undef LOAD_LINE
#define ITER(i, j) \
const vector signed short v_diff##i = \
vec_sub(v_srcAss##i, v_srcAss##j); \
const vector signed short v_sum##i = \
vec_add(v_diff##i, v_dcOffset); \
const vector signed short v_comp##i = \
(vector signed short)vec_cmplt((vector unsigned short)v_sum##i, \
v_dcThreshold); \
const vector signed short v_part##i = vec_and(mask, v_comp##i); \
v_numEq = vec_sum4s(v_part##i, v_numEq);
ITER(0, 1);
ITER(1, 2);
ITER(2, 3);
ITER(3, 4);
ITER(4, 5);
ITER(5, 6);
ITER(6, 7);
#undef ITER
v_numEq = vec_sums(v_numEq, zero);
v_numEq = vec_splat(v_numEq, 3);
vec_ste(v_numEq, 0, &numEq);
if (numEq > c->ppMode.flatnessThreshold)
{
const vector unsigned char mmoP1 = (const vector unsigned char)
AVV(0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f,
0x00, 0x01, 0x12, 0x13, 0x08, 0x09, 0x1A, 0x1B);
const vector unsigned char mmoP2 = (const vector unsigned char)
AVV(0x04, 0x05, 0x16, 0x17, 0x0C, 0x0D, 0x1E, 0x1F,
0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f);
const vector unsigned char mmoP = (const vector unsigned char)
vec_lvsl(8, (unsigned char*)0);
vector signed short mmoL1 = vec_perm(v_srcAss0, v_srcAss2, mmoP1);
vector signed short mmoL2 = vec_perm(v_srcAss4, v_srcAss6, mmoP2);
vector signed short mmoL = vec_perm(mmoL1, mmoL2, mmoP);
vector signed short mmoR1 = vec_perm(v_srcAss5, v_srcAss7, mmoP1);
vector signed short mmoR2 = vec_perm(v_srcAss1, v_srcAss3, mmoP2);
vector signed short mmoR = vec_perm(mmoR1, mmoR2, mmoP);
vector signed short mmoDiff = vec_sub(mmoL, mmoR);
vector unsigned short mmoSum = (vector unsigned short)vec_add(mmoDiff, v2QP);
if (vec_any_gt(mmoSum, v4QP))
return 0;
else
return 1;
}
else return 2;
}
static inline void doVertLowPass_altivec(uint8_t *src, int stride, PPContext *c) {
/*
this code makes no assumption on src or stride.
One could remove the recomputation of the perm
vector by assuming (stride % 16) == 0, unfortunately
this is not always true. Quite a lot of load/stores
can be removed by assuming proper alignement of
src & stride :-(
*/
uint8_t *src2 = src;
const vector signed int zero = vec_splat_s32(0);
short __attribute__ ((aligned(16))) qp[8];
qp[0] = c->QP;
vector signed short vqp = vec_ld(0, qp);
vqp = vec_splat(vqp, 0);
#define LOAD_LINE(i) \
const vector unsigned char perml##i = \
vec_lvsl(i * stride, src2); \
const vector unsigned char vbA##i = \
vec_ld(i * stride, src2); \
const vector unsigned char vbB##i = \
vec_ld(i * stride + 16, src2); \
const vector unsigned char vbT##i = \
vec_perm(vbA##i, vbB##i, perml##i); \
const vector signed short vb##i = \
(vector signed short)vec_mergeh((vector unsigned char)zero, \
(vector unsigned char)vbT##i)
src2 += stride*3;
LOAD_LINE(0);
LOAD_LINE(1);
LOAD_LINE(2);
LOAD_LINE(3);
LOAD_LINE(4);
LOAD_LINE(5);
LOAD_LINE(6);
LOAD_LINE(7);
LOAD_LINE(8);
LOAD_LINE(9);
#undef LOAD_LINE
const vector unsigned short v_1 = vec_splat_u16(1);
const vector unsigned short v_2 = vec_splat_u16(2);
const vector unsigned short v_4 = vec_splat_u16(4);
const vector signed short v_8 = vec_splat_s16(8);
const vector signed short v_first = vec_sel(vb1, vb0,
vec_cmplt(vec_abs(vec_sub(vb0, vb1)),
vqp));
const vector signed short v_last = vec_sel(vb8, vb9,
vec_cmplt(vec_abs(vec_sub(vb8, vb9)),
vqp));
const vector signed short v_sums0 = vec_add(v_first, vb1);
const vector signed short v_sums1 = vec_add(vb1, vb2);
const vector signed short v_sums2 = vec_add(vb2, vb3);
const vector signed short v_sums3 = vec_add(vb3, vb4);
const vector signed short v_sums4 = vec_add(vb4, vb5);
const vector signed short v_sums5 = vec_add(vb5, vb6);
const vector signed short v_sums6 = vec_add(vb6, vb7);
const vector signed short v_sums7 = vec_add(vb7, vb8);
const vector signed short v_sums8 = vec_add(vb8, v_last);
const vector signed short vr1 = vec_sra(vec_add(vec_add(vec_sl(v_sums0, v_2),
vec_sl(vec_add(v_first, v_sums2), v_1)),
vec_add(v_sums4, v_8)),
v_4);
const vector signed short vr2 = vec_sra(vec_add(vec_add(vec_sl(vb2, v_2),
v_sums5),
vec_add(v_8,
vec_sl(vec_add(v_first,
vec_add(v_sums0, v_sums3)),
v_1))),
v_4);
const vector signed short vr3 = vec_sra(vec_add(vec_add(vec_sl(vb3, v_2),
v_sums6),
vec_add(v_8,
vec_sl(vec_add(v_first,
vec_add(v_sums1, v_sums4)),
v_1))),
v_4);
const vector signed short vr4 = vec_sra(vec_add(vec_add(vec_sl(vb4, v_2),
v_sums7),
vec_add(v_8,
vec_add(v_sums0,
vec_sl(vec_add(v_sums2, v_sums5),
v_1)))),
v_4);
const vector signed short vr5 = vec_sra(vec_add(vec_add(vec_sl(vb5, v_2),
v_sums8),
vec_add(v_8,
vec_add(v_sums1,
vec_sl(vec_add(v_sums3, v_sums6),
v_1)))),
v_4);
const vector signed short vr6 = vec_sra(vec_add(vec_add(vec_sl(vb6, v_2),
v_sums2),
vec_add(v_8,
vec_sl(vec_add(v_last,
vec_add(v_sums7, v_sums4)),
v_1))),
v_4);
const vector signed short vr7 = vec_sra(vec_add(vec_add(vec_sl(vec_add(v_last, vb7), v_2),
vec_sl(vec_add(vb8, v_sums5), v_1)),
vec_add(v_8, v_sums3)),
v_4);
const vector signed short vr8 = vec_sra(vec_add(vec_add(vec_sl(v_sums8, v_2),
vec_sl(vec_add(v_last, v_sums6), v_1)),
vec_add(v_sums4, v_8)),
v_4);
const vector unsigned char neg1 = (vector unsigned char)AVV(-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1);
const vector unsigned char permHH = (vector unsigned char)AVV(0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F);
#define PACK_AND_STORE(i) \
const vector unsigned char perms##i = \
vec_lvsr(i * stride, src2); \
const vector unsigned char vf##i = \
vec_packsu(vr##i, (vector signed short)zero); \
const vector unsigned char vg##i = \
vec_perm(vf##i, vbT##i, permHH); \
const vector unsigned char mask##i = \
vec_perm((vector unsigned char)zero, neg1, perms##i); \
const vector unsigned char vg2##i = \
vec_perm(vg##i, vg##i, perms##i); \
const vector unsigned char svA##i = \
vec_sel(vbA##i, vg2##i, mask##i); \
const vector unsigned char svB##i = \
vec_sel(vg2##i, vbB##i, mask##i); \
vec_st(svA##i, i * stride, src2); \
vec_st(svB##i, i * stride + 16, src2)
PACK_AND_STORE(1);
PACK_AND_STORE(2);
PACK_AND_STORE(3);
PACK_AND_STORE(4);
PACK_AND_STORE(5);
PACK_AND_STORE(6);
PACK_AND_STORE(7);
PACK_AND_STORE(8);
#undef PACK_AND_STORE
}
static inline void doVertDefFilter_altivec(uint8_t src[], int stride, PPContext *c) {
/*
this code makes no assumption on src or stride.
One could remove the recomputation of the perm
vector by assuming (stride % 16) == 0, unfortunately
this is not always true. Quite a lot of load/stores
can be removed by assuming proper alignement of
src & stride :-(
*/
uint8_t *src2 = src;
const vector signed int zero = vec_splat_s32(0);
short __attribute__ ((aligned(16))) qp[8];
qp[0] = 8*c->QP;
vector signed short vqp = vec_ld(0, qp);
vqp = vec_splat(vqp, 0);
#define LOAD_LINE(i) \
const vector unsigned char perm##i = \
vec_lvsl(i * stride, src2); \
const vector unsigned char vbA##i = \
vec_ld(i * stride, src2); \
const vector unsigned char vbB##i = \
vec_ld(i * stride + 16, src2); \
const vector unsigned char vbT##i = \
vec_perm(vbA##i, vbB##i, perm##i); \
const vector signed short vb##i = \
(vector signed short)vec_mergeh((vector unsigned char)zero, \
(vector unsigned char)vbT##i)
src2 += stride*3;
LOAD_LINE(1);
LOAD_LINE(2);
LOAD_LINE(3);
LOAD_LINE(4);
LOAD_LINE(5);
LOAD_LINE(6);
LOAD_LINE(7);
LOAD_LINE(8);
#undef LOAD_LINE
const vector signed short v_1 = vec_splat_s16(1);
const vector signed short v_2 = vec_splat_s16(2);
const vector signed short v_5 = vec_splat_s16(5);
const vector signed short v_32 = vec_sl(v_1,
(vector unsigned short)v_5);
/* middle energy */
const vector signed short l3minusl6 = vec_sub(vb3, vb6);
const vector signed short l5minusl4 = vec_sub(vb5, vb4);
const vector signed short twotimes_l3minusl6 = vec_mladd(v_2, l3minusl6, (vector signed short)zero);
const vector signed short mE = vec_mladd(v_5, l5minusl4, twotimes_l3minusl6);
const vector signed short absmE = vec_abs(mE);
/* left & right energy */
const vector signed short l1minusl4 = vec_sub(vb1, vb4);
const vector signed short l3minusl2 = vec_sub(vb3, vb2);
const vector signed short l5minusl8 = vec_sub(vb5, vb8);
const vector signed short l7minusl6 = vec_sub(vb7, vb6);
const vector signed short twotimes_l1minusl4 = vec_mladd(v_2, l1minusl4, (vector signed short)zero);
const vector signed short twotimes_l5minusl8 = vec_mladd(v_2, l5minusl8, (vector signed short)zero);
const vector signed short lE = vec_mladd(v_5, l3minusl2, twotimes_l1minusl4);
const vector signed short rE = vec_mladd(v_5, l7minusl6, twotimes_l5minusl8);
/* d */
const vector signed short ddiff = vec_sub(absmE,
vec_min(vec_abs(lE),
vec_abs(rE)));
const vector signed short ddiffclamp = vec_max(ddiff, (vector signed short)zero);
const vector signed short dtimes64 = vec_mladd(v_5, ddiffclamp, v_32);
const vector signed short d = vec_sra(dtimes64, vec_splat_u16(6));
const vector signed short minusd = vec_sub((vector signed short)zero, d);
const vector signed short finald = vec_sel(minusd,
d,
vec_cmpgt(vec_sub((vector signed short)zero, mE),
(vector signed short)zero));
/* q */
const vector signed short qtimes2 = vec_sub(vb4, vb5);
/* for a shift right to behave like /2, we need to add one
to all negative integer */
const vector signed short rounddown = vec_sel((vector signed short)zero,
v_1,
vec_cmplt(qtimes2, (vector signed short)zero));
const vector signed short q = vec_sra(vec_add(qtimes2, rounddown), vec_splat_u16(1));
/* clamp */
const vector signed short dclamp_P1 = vec_max((vector signed short)zero, finald);
const vector signed short dclamp_P = vec_min(dclamp_P1, q);
const vector signed short dclamp_N1 = vec_min((vector signed short)zero, finald);
const vector signed short dclamp_N = vec_max(dclamp_N1, q);
const vector signed short dclampedfinal = vec_sel(dclamp_N,
dclamp_P,
vec_cmpgt(q, (vector signed short)zero));
const vector signed short dornotd = vec_sel((vector signed short)zero,
dclampedfinal,
vec_cmplt(absmE, vqp));
/* add/substract to l4 and l5 */
const vector signed short vb4minusd = vec_sub(vb4, dornotd);
const vector signed short vb5plusd = vec_add(vb5, dornotd);
/* finally, stores */
const vector unsigned char st4 = vec_packsu(vb4minusd, (vector signed short)zero);
const vector unsigned char st5 = vec_packsu(vb5plusd, (vector signed short)zero);
const vector unsigned char neg1 = (vector unsigned char)AVV(-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1);
const vector unsigned char permHH = (vector unsigned char)AVV(0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F);
#define STORE(i) \
const vector unsigned char perms##i = \
vec_lvsr(i * stride, src2); \
const vector unsigned char vg##i = \
vec_perm(st##i, vbT##i, permHH); \
const vector unsigned char mask##i = \
vec_perm((vector unsigned char)zero, neg1, perms##i); \
const vector unsigned char vg2##i = \
vec_perm(vg##i, vg##i, perms##i); \
const vector unsigned char svA##i = \
vec_sel(vbA##i, vg2##i, mask##i); \
const vector unsigned char svB##i = \
vec_sel(vg2##i, vbB##i, mask##i); \
vec_st(svA##i, i * stride, src2); \
vec_st(svB##i, i * stride + 16, src2)
STORE(4);
STORE(5);
}
static inline void dering_altivec(uint8_t src[], int stride, PPContext *c) {
/*
this code makes no assumption on src or stride.
One could remove the recomputation of the perm
vector by assuming (stride % 16) == 0, unfortunately
this is not always true. Quite a lot of load/stores
can be removed by assuming proper alignement of
src & stride :-(
*/
uint8_t *srcCopy = src;
uint8_t __attribute__((aligned(16))) dt[16];
const vector unsigned char vuint8_1 = vec_splat_u8(1);
const vector signed int zero = vec_splat_s32(0);
vector unsigned char v_dt;
dt[0] = deringThreshold;
v_dt = vec_splat(vec_ld(0, dt), 0);
#define LOAD_LINE(i) \
const vector unsigned char perm##i = \
vec_lvsl(i * stride, srcCopy); \
vector unsigned char sA##i = vec_ld(i * stride, srcCopy); \
vector unsigned char sB##i = vec_ld(i * stride + 16, srcCopy); \
vector unsigned char src##i = vec_perm(sA##i, sB##i, perm##i)
LOAD_LINE(0);
LOAD_LINE(1);
LOAD_LINE(2);
LOAD_LINE(3);
LOAD_LINE(4);
LOAD_LINE(5);
LOAD_LINE(6);
LOAD_LINE(7);
LOAD_LINE(8);
LOAD_LINE(9);
#undef LOAD_LINE
vector unsigned char v_avg;
{
const vector unsigned char trunc_perm = (vector unsigned char)
AVV(0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18);
const vector unsigned char trunc_src12 = vec_perm(src1, src2, trunc_perm);
const vector unsigned char trunc_src34 = vec_perm(src3, src4, trunc_perm);
const vector unsigned char trunc_src56 = vec_perm(src5, src6, trunc_perm);
const vector unsigned char trunc_src78 = vec_perm(src7, src8, trunc_perm);
#define EXTRACT(op) do { \
const vector unsigned char s##op##_1 = vec_##op(trunc_src12, trunc_src34); \
const vector unsigned char s##op##_2 = vec_##op(trunc_src56, trunc_src78); \
const vector unsigned char s##op##_6 = vec_##op(s##op##_1, s##op##_2); \
const vector unsigned char s##op##_8h = vec_mergeh(s##op##_6, s##op##_6); \
const vector unsigned char s##op##_8l = vec_mergel(s##op##_6, s##op##_6); \
const vector unsigned char s##op##_9 = vec_##op(s##op##_8h, s##op##_8l); \
const vector unsigned char s##op##_9h = vec_mergeh(s##op##_9, s##op##_9); \
const vector unsigned char s##op##_9l = vec_mergel(s##op##_9, s##op##_9); \
const vector unsigned char s##op##_10 = vec_##op(s##op##_9h, s##op##_9l); \
const vector unsigned char s##op##_10h = vec_mergeh(s##op##_10, s##op##_10); \
const vector unsigned char s##op##_10l = vec_mergel(s##op##_10, s##op##_10); \
const vector unsigned char s##op##_11 = vec_##op(s##op##_10h, s##op##_10l); \
const vector unsigned char s##op##_11h = vec_mergeh(s##op##_11, s##op##_11); \
const vector unsigned char s##op##_11l = vec_mergel(s##op##_11, s##op##_11); \
v_##op = vec_##op(s##op##_11h, s##op##_11l); } while (0)
vector unsigned char v_min;
vector unsigned char v_max;
EXTRACT(min);
EXTRACT(max);
#undef EXTRACT
if (vec_all_lt(vec_sub(v_max, v_min), v_dt))
return;
v_avg = vec_avg(v_min, v_max);
}
signed int __attribute__((aligned(16))) S[8];
{
const vector unsigned short mask1 = (vector unsigned short)
AVV(0x0001, 0x0002, 0x0004, 0x0008,
0x0010, 0x0020, 0x0040, 0x0080);
const vector unsigned short mask2 = (vector unsigned short)
AVV(0x0100, 0x0200, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000);
const vector unsigned int vuint32_16 = vec_sl(vec_splat_u32(1), vec_splat_u32(4));
const vector unsigned int vuint32_1 = vec_splat_u32(1);
#define COMPARE(i) \
vector signed int sum##i; \
do { \
const vector unsigned char cmp##i = \
(vector unsigned char)vec_cmpgt(src##i, v_avg); \
const vector unsigned short cmpHi##i = \
(vector unsigned short)vec_mergeh(cmp##i, cmp##i); \
const vector unsigned short cmpLi##i = \
(vector unsigned short)vec_mergel(cmp##i, cmp##i); \
const vector signed short cmpHf##i = \
(vector signed short)vec_and(cmpHi##i, mask1); \
const vector signed short cmpLf##i = \
(vector signed short)vec_and(cmpLi##i, mask2); \
const vector signed int sump##i = vec_sum4s(cmpHf##i, zero); \
const vector signed int sumq##i = vec_sum4s(cmpLf##i, sump##i); \
sum##i = vec_sums(sumq##i, zero); } while (0)
COMPARE(0);
COMPARE(1);
COMPARE(2);
COMPARE(3);
COMPARE(4);
COMPARE(5);
COMPARE(6);
COMPARE(7);
COMPARE(8);
COMPARE(9);
#undef COMPARE
vector signed int sumA2;
vector signed int sumB2;
{
const vector signed int sump02 = vec_mergel(sum0, sum2);
const vector signed int sump13 = vec_mergel(sum1, sum3);
const vector signed int sumA = vec_mergel(sump02, sump13);
const vector signed int sump46 = vec_mergel(sum4, sum6);
const vector signed int sump57 = vec_mergel(sum5, sum7);
const vector signed int sumB = vec_mergel(sump46, sump57);
const vector signed int sump8A = vec_mergel(sum8, zero);
const vector signed int sump9B = vec_mergel(sum9, zero);
const vector signed int sumC = vec_mergel(sump8A, sump9B);
const vector signed int tA = vec_sl(vec_nor(zero, sumA), vuint32_16);
const vector signed int tB = vec_sl(vec_nor(zero, sumB), vuint32_16);
const vector signed int tC = vec_sl(vec_nor(zero, sumC), vuint32_16);
const vector signed int t2A = vec_or(sumA, tA);
const vector signed int t2B = vec_or(sumB, tB);
const vector signed int t2C = vec_or(sumC, tC);
const vector signed int t3A = vec_and(vec_sra(t2A, vuint32_1),
vec_sl(t2A, vuint32_1));
const vector signed int t3B = vec_and(vec_sra(t2B, vuint32_1),
vec_sl(t2B, vuint32_1));
const vector signed int t3C = vec_and(vec_sra(t2C, vuint32_1),
vec_sl(t2C, vuint32_1));
const vector signed int yA = vec_and(t2A, t3A);
const vector signed int yB = vec_and(t2B, t3B);
const vector signed int yC = vec_and(t2C, t3C);
const vector unsigned char strangeperm1 = vec_lvsl(4, (unsigned char*)0);
const vector unsigned char strangeperm2 = vec_lvsl(8, (unsigned char*)0);
const vector signed int sumAd4 = vec_perm(yA, yB, strangeperm1);
const vector signed int sumAd8 = vec_perm(yA, yB, strangeperm2);
const vector signed int sumBd4 = vec_perm(yB, yC, strangeperm1);
const vector signed int sumBd8 = vec_perm(yB, yC, strangeperm2);
const vector signed int sumAp = vec_and(yA,
vec_and(sumAd4,sumAd8));
const vector signed int sumBp = vec_and(yB,
vec_and(sumBd4,sumBd8));
sumA2 = vec_or(sumAp,
vec_sra(sumAp,
vuint32_16));
sumB2 = vec_or(sumBp,
vec_sra(sumBp,
vuint32_16));
}
vec_st(sumA2, 0, S);
vec_st(sumB2, 16, S);
}
/* I'm not sure the following is actually faster
than straight, unvectorized C code :-( */
int __attribute__((aligned(16))) tQP2[4];
tQP2[0]= c->QP/2 + 1;
vector signed int vQP2 = vec_ld(0, tQP2);
vQP2 = vec_splat(vQP2, 0);
const vector unsigned char vuint8_2 = vec_splat_u8(2);
const vector signed int vsint32_8 = vec_splat_s32(8);
const vector unsigned int vuint32_4 = vec_splat_u32(4);
const vector unsigned char permA1 = (vector unsigned char)
AVV(0x00, 0x01, 0x02, 0x10, 0x11, 0x12, 0x1F, 0x1F,
0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F);
const vector unsigned char permA2 = (vector unsigned char)
AVV(0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x10, 0x11,
0x12, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F);
const vector unsigned char permA1inc = (vector unsigned char)
AVV(0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
const vector unsigned char permA2inc = (vector unsigned char)
AVV(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
const vector unsigned char magic = (vector unsigned char)
AVV(0x01, 0x02, 0x01, 0x02, 0x04, 0x02, 0x01, 0x02,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
const vector unsigned char extractPerm = (vector unsigned char)
AVV(0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01,
0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01);
const vector unsigned char extractPermInc = (vector unsigned char)
AVV(0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01);
const vector unsigned char identity = vec_lvsl(0,(unsigned char *)0);
const vector unsigned char tenRight = (vector unsigned char)
AVV(0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
const vector unsigned char eightLeft = (vector unsigned char)
AVV(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08);
#define F_INIT(i) \
vector unsigned char tenRightM##i = tenRight; \
vector unsigned char permA1M##i = permA1; \
vector unsigned char permA2M##i = permA2; \
vector unsigned char extractPermM##i = extractPerm
#define F2(i, j, k, l) \
if (S[i] & (1 << (l+1))) { \
const vector unsigned char a_##j##_A##l = \
vec_perm(src##i, src##j, permA1M##i); \
const vector unsigned char a_##j##_B##l = \
vec_perm(a_##j##_A##l, src##k, permA2M##i); \
const vector signed int a_##j##_sump##l = \
(vector signed int)vec_msum(a_##j##_B##l, magic, \
(vector unsigned int)zero); \
vector signed int F_##j##_##l = \
vec_sr(vec_sums(a_##j##_sump##l, vsint32_8), vuint32_4); \
F_##j##_##l = vec_splat(F_##j##_##l, 3); \
const vector signed int p_##j##_##l = \
(vector signed int)vec_perm(src##j, \
(vector unsigned char)zero, \
extractPermM##i); \
const vector signed int sum_##j##_##l = vec_add( p_##j##_##l, vQP2); \
const vector signed int diff_##j##_##l = vec_sub( p_##j##_##l, vQP2); \
vector signed int newpm_##j##_##l; \
if (vec_all_lt(sum_##j##_##l, F_##j##_##l)) \
newpm_##j##_##l = sum_##j##_##l; \
else if (vec_all_gt(diff_##j##_##l, F_##j##_##l)) \
newpm_##j##_##l = diff_##j##_##l; \
else newpm_##j##_##l = F_##j##_##l; \
const vector unsigned char newpm2_##j##_##l = \
vec_splat((vector unsigned char)newpm_##j##_##l, 15); \
const vector unsigned char mask##j##l = vec_add(identity, \
tenRightM##i); \
src##j = vec_perm(src##j, newpm2_##j##_##l, mask##j##l); \
} \
permA1M##i = vec_add(permA1M##i, permA1inc); \
permA2M##i = vec_add(permA2M##i, permA2inc); \
tenRightM##i = vec_sro(tenRightM##i, eightLeft); \
extractPermM##i = vec_add(extractPermM##i, extractPermInc)
#define ITER(i, j, k) \
F_INIT(i); \
F2(i, j, k, 0); \
F2(i, j, k, 1); \
F2(i, j, k, 2); \
F2(i, j, k, 3); \
F2(i, j, k, 4); \
F2(i, j, k, 5); \
F2(i, j, k, 6); \
F2(i, j, k, 7)
ITER(0, 1, 2);
ITER(1, 2, 3);
ITER(2, 3, 4);
ITER(3, 4, 5);
ITER(4, 5, 6);
ITER(5, 6, 7);
ITER(6, 7, 8);
ITER(7, 8, 9);
const vector signed char neg1 = vec_splat_s8( -1 );
#define STORE_LINE(i) \
const vector unsigned char permST##i = \
vec_lvsr(i * stride, srcCopy); \
const vector unsigned char maskST##i = \
vec_perm((vector unsigned char)zero, \
(vector unsigned char)neg1, permST##i); \
src##i = vec_perm(src##i ,src##i, permST##i); \
sA##i= vec_sel(sA##i, src##i, maskST##i); \
sB##i= vec_sel(src##i, sB##i, maskST##i); \
vec_st(sA##i, i * stride, srcCopy); \
vec_st(sB##i, i * stride + 16, srcCopy)
STORE_LINE(1);
STORE_LINE(2);
STORE_LINE(3);
STORE_LINE(4);
STORE_LINE(5);
STORE_LINE(6);
STORE_LINE(7);
STORE_LINE(8);
#undef STORE_LINE
#undef ITER
#undef F2
}
#define horizClassify_altivec(a...) horizClassify_C(a)
#define doHorizLowPass_altivec(a...) doHorizLowPass_C(a)
#define doHorizDefFilter_altivec(a...) doHorizDefFilter_C(a)