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postprocess_altivec_template.c
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/*
* AltiVec optimizations (C) 2004 Romain Dolbeau <[email protected]>
*
* based on code by Copyright (C) 2001-2003 Michael Niedermayer ([email protected])
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/avutil.h"
#include "libavutil/mem_internal.h"
#define ALTIVEC_TRANSPOSE_8x8_SHORT(src_a,src_b,src_c,src_d,src_e,src_f,src_g,src_h) \
do { \
__typeof__(src_a) tempA1, tempB1, tempC1, tempD1; \
__typeof__(src_a) tempE1, tempF1, tempG1, tempH1; \
__typeof__(src_a) tempA2, tempB2, tempC2, tempD2; \
__typeof__(src_a) tempE2, tempF2, tempG2, tempH2; \
tempA1 = vec_mergeh (src_a, src_e); \
tempB1 = vec_mergel (src_a, src_e); \
tempC1 = vec_mergeh (src_b, src_f); \
tempD1 = vec_mergel (src_b, src_f); \
tempE1 = vec_mergeh (src_c, src_g); \
tempF1 = vec_mergel (src_c, src_g); \
tempG1 = vec_mergeh (src_d, src_h); \
tempH1 = vec_mergel (src_d, src_h); \
tempA2 = vec_mergeh (tempA1, tempE1); \
tempB2 = vec_mergel (tempA1, tempE1); \
tempC2 = vec_mergeh (tempB1, tempF1); \
tempD2 = vec_mergel (tempB1, tempF1); \
tempE2 = vec_mergeh (tempC1, tempG1); \
tempF2 = vec_mergel (tempC1, tempG1); \
tempG2 = vec_mergeh (tempD1, tempH1); \
tempH2 = vec_mergel (tempD1, tempH1); \
src_a = vec_mergeh (tempA2, tempE2); \
src_b = vec_mergel (tempA2, tempE2); \
src_c = vec_mergeh (tempB2, tempF2); \
src_d = vec_mergel (tempB2, tempF2); \
src_e = vec_mergeh (tempC2, tempG2); \
src_f = vec_mergel (tempC2, tempG2); \
src_g = vec_mergeh (tempD2, tempH2); \
src_h = vec_mergel (tempD2, tempH2); \
} while (0)
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.
*/
short data_0 = ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1;
DECLARE_ALIGNED(16, short, data)[8] =
{
data_0,
data_0 * 2 + 1,
c->QP * 2,
c->QP * 4
};
int numEq;
uint8_t *src2 = src;
vector signed short v_dcOffset;
vector signed short v2QP;
vector unsigned short v4QP;
vector unsigned short v_dcThreshold;
const int properStride = (stride % 16);
const int srcAlign = ((unsigned long)src2 % 16);
const int two_vectors = ((srcAlign > 8) || properStride) ? 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);
vector signed short v_data = vec_ld(0, data);
vector signed short v_srcAss0, v_srcAss1, v_srcAss2, v_srcAss3,
v_srcAss4, v_srcAss5, v_srcAss6, v_srcAss7;
//FIXME avoid this mess if possible
register int j0 = 0,
j1 = stride,
j2 = 2 * stride,
j3 = 3 * stride,
j4 = 4 * stride,
j5 = 5 * stride,
j6 = 6 * stride,
j7 = 7 * stride;
vector unsigned char v_srcA0, v_srcA1, v_srcA2, v_srcA3,
v_srcA4, v_srcA5, v_srcA6, v_srcA7;
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) \
{ \
vector unsigned char perm##i = vec_lvsl(j##i, src2); \
vector unsigned char v_srcA2##i; \
vector unsigned char v_srcA1##i = vec_ld(j##i, src2); \
if (two_vectors) \
v_srcA2##i = vec_ld(j##i + 16, src2); \
v_srcA##i = \
vec_perm(v_srcA1##i, v_srcA2##i, perm##i); \
v_srcAss##i = \
(vector signed short)vec_mergeh((vector signed char)zero, \
(vector signed char)v_srcA##i); }
#define LOAD_LINE_ALIGNED(i) \
v_srcA##i = vec_ld(j##i, src2); \
v_srcAss##i = \
(vector signed short)vec_mergeh((vector signed char)zero, \
(vector signed char)v_srcA##i)
/* Special-casing the aligned case is worthwhile, as all calls from
* the (transposed) horizontable deblocks will be aligned, in addition
* to the naturally aligned vertical deblocks. */
if (properStride && srcAlign) {
LOAD_LINE_ALIGNED(0);
LOAD_LINE_ALIGNED(1);
LOAD_LINE_ALIGNED(2);
LOAD_LINE_ALIGNED(3);
LOAD_LINE_ALIGNED(4);
LOAD_LINE_ALIGNED(5);
LOAD_LINE_ALIGNED(6);
LOAD_LINE_ALIGNED(7);
} else {
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
#undef LOAD_LINE_ALIGNED
#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);
{
ITER(0, 1)
ITER(1, 2)
ITER(2, 3)
ITER(3, 4)
ITER(4, 5)
ITER(5, 6)
ITER(6, 7)
v_numEq = vec_sum4s(v_part0, v_numEq);
v_numEq = vec_sum4s(v_part1, v_numEq);
v_numEq = vec_sum4s(v_part2, v_numEq);
v_numEq = vec_sum4s(v_part3, v_numEq);
v_numEq = vec_sum4s(v_part4, v_numEq);
v_numEq = vec_sum4s(v_part5, v_numEq);
v_numEq = vec_sum4s(v_part6, v_numEq);
}
#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)
{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)
{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 alignment of
src & stride :-(
*/
uint8_t *src2 = src;
const vector signed int zero = vec_splat_s32(0);
const int properStride = (stride % 16);
const int srcAlign = ((unsigned long)src2 % 16);
DECLARE_ALIGNED(16, short, qp)[8] = {c->QP};
vector signed short vqp = vec_ld(0, qp);
vector signed short vb0, vb1, vb2, vb3, vb4, vb5, vb6, vb7, vb8, vb9;
vector unsigned char vbA0, av_uninit(vbA1), av_uninit(vbA2), av_uninit(vbA3), av_uninit(vbA4), av_uninit(vbA5), av_uninit(vbA6), av_uninit(vbA7), av_uninit(vbA8), vbA9;
vector unsigned char vbB0, av_uninit(vbB1), av_uninit(vbB2), av_uninit(vbB3), av_uninit(vbB4), av_uninit(vbB5), av_uninit(vbB6), av_uninit(vbB7), av_uninit(vbB8), vbB9;
vector unsigned char vbT0, vbT1, vbT2, vbT3, vbT4, vbT5, vbT6, vbT7, vbT8, vbT9;
vector unsigned char perml0, perml1, perml2, perml3, perml4,
perml5, perml6, perml7, perml8, perml9;
register int j0 = 0,
j1 = stride,
j2 = 2 * stride,
j3 = 3 * stride,
j4 = 4 * stride,
j5 = 5 * stride,
j6 = 6 * stride,
j7 = 7 * stride,
j8 = 8 * stride,
j9 = 9 * stride;
vqp = vec_splat(vqp, 0);
src2 += stride*3;
#define LOAD_LINE(i) \
perml##i = vec_lvsl(i * stride, src2); \
vbA##i = vec_ld(i * stride, src2); \
vbB##i = vec_ld(i * stride + 16, src2); \
vbT##i = vec_perm(vbA##i, vbB##i, perml##i); \
vb##i = \
(vector signed short)vec_mergeh((vector unsigned char)zero, \
(vector unsigned char)vbT##i)
#define LOAD_LINE_ALIGNED(i) \
vbT##i = vec_ld(j##i, src2); \
vb##i = \
(vector signed short)vec_mergeh((vector signed char)zero, \
(vector signed char)vbT##i)
/* Special-casing the aligned case is worthwhile, as all calls from
* the (transposed) horizontable deblocks will be aligned, in addition
* to the naturally aligned vertical deblocks. */
if (properStride && srcAlign) {
LOAD_LINE_ALIGNED(0);
LOAD_LINE_ALIGNED(1);
LOAD_LINE_ALIGNED(2);
LOAD_LINE_ALIGNED(3);
LOAD_LINE_ALIGNED(4);
LOAD_LINE_ALIGNED(5);
LOAD_LINE_ALIGNED(6);
LOAD_LINE_ALIGNED(7);
LOAD_LINE_ALIGNED(8);
LOAD_LINE_ALIGNED(9);
} else {
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
#undef LOAD_LINE_ALIGNED
{
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_diff01 = vec_sub(vb0, vb1);
const vector unsigned short v_cmp01 =
(const vector unsigned short) vec_cmplt(vec_abs(v_diff01), vqp);
const vector signed short v_first = vec_sel(vb1, vb0, v_cmp01);
const vector signed short v_diff89 = vec_sub(vb8, vb9);
const vector unsigned short v_cmp89 =
(const vector unsigned short) vec_cmplt(vec_abs(v_diff89), vqp);
const vector signed short v_last = vec_sel(vb8, vb9, v_cmp89);
const vector signed short temp01 = vec_mladd(v_first, (vector signed short)v_4, vb1);
const vector signed short temp02 = vec_add(vb2, vb3);
const vector signed short temp03 = vec_add(temp01, (vector signed short)v_4);
const vector signed short v_sumsB0 = vec_add(temp02, temp03);
const vector signed short temp11 = vec_sub(v_sumsB0, v_first);
const vector signed short v_sumsB1 = vec_add(temp11, vb4);
const vector signed short temp21 = vec_sub(v_sumsB1, v_first);
const vector signed short v_sumsB2 = vec_add(temp21, vb5);
const vector signed short temp31 = vec_sub(v_sumsB2, v_first);
const vector signed short v_sumsB3 = vec_add(temp31, vb6);
const vector signed short temp41 = vec_sub(v_sumsB3, v_first);
const vector signed short v_sumsB4 = vec_add(temp41, vb7);
const vector signed short temp51 = vec_sub(v_sumsB4, vb1);
const vector signed short v_sumsB5 = vec_add(temp51, vb8);
const vector signed short temp61 = vec_sub(v_sumsB5, vb2);
const vector signed short v_sumsB6 = vec_add(temp61, v_last);
const vector signed short temp71 = vec_sub(v_sumsB6, vb3);
const vector signed short v_sumsB7 = vec_add(temp71, v_last);
const vector signed short temp81 = vec_sub(v_sumsB7, vb4);
const vector signed short v_sumsB8 = vec_add(temp81, v_last);
const vector signed short temp91 = vec_sub(v_sumsB8, vb5);
const vector signed short v_sumsB9 = vec_add(temp91, v_last);
#define COMPUTE_VR(i, j, k) \
const vector signed short temps1##i = \
vec_add(v_sumsB##i, v_sumsB##k); \
const vector signed short temps2##i = \
vec_mladd(vb##j, (vector signed short)v_2, temps1##i); \
const vector signed short vr##j = vec_sra(temps2##i, v_4)
COMPUTE_VR(0, 1, 2);
COMPUTE_VR(1, 2, 3);
COMPUTE_VR(2, 3, 4);
COMPUTE_VR(3, 4, 5);
COMPUTE_VR(4, 5, 6);
COMPUTE_VR(5, 6, 7);
COMPUTE_VR(6, 7, 8);
COMPUTE_VR(7, 8, 9);
const vector signed char neg1 = vec_splat_s8(-1);
const vector unsigned char permHH = (const vector unsigned char){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, (vector unsigned char)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);}
#define PACK_AND_STORE_ALIGNED(i) \
{ 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); \
vec_st(vg##i, i * stride, src2);}
/* Special-casing the aligned case is worthwhile, as all calls from
* the (transposed) horizontable deblocks will be aligned, in addition
* to the naturally aligned vertical deblocks. */
if (properStride && srcAlign) {
PACK_AND_STORE_ALIGNED(1)
PACK_AND_STORE_ALIGNED(2)
PACK_AND_STORE_ALIGNED(3)
PACK_AND_STORE_ALIGNED(4)
PACK_AND_STORE_ALIGNED(5)
PACK_AND_STORE_ALIGNED(6)
PACK_AND_STORE_ALIGNED(7)
PACK_AND_STORE_ALIGNED(8)
} else {
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
#undef PACK_AND_STORE_ALIGNED
}
}
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 alignment of
src & stride :-(
*/
uint8_t *src2 = src + stride*3;
const vector signed int zero = vec_splat_s32(0);
DECLARE_ALIGNED(16, short, qp)[8] = {8*c->QP};
vector signed short vqp = vec_splat(
(vector signed short)vec_ld(0, qp), 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)
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/subtract 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 signed char neg1 = vec_splat_s8(-1);
const vector unsigned char permHH = (const vector unsigned char){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, (vector unsigned char)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) {
const vector signed int vsint32_8 = vec_splat_s32(8);
const vector unsigned int vuint32_4 = vec_splat_u32(4);
const vector signed char neg1 = vec_splat_s8(-1);
const vector unsigned char permA1 = (vector unsigned char)
{0x00, 0x01, 0x02, 0x10, 0x11, 0x12, 0x1F, 0x1F,
0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
const vector unsigned char permA2 = (vector unsigned char)
{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x10, 0x11,
0x12, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
const vector unsigned char permA1inc = (vector unsigned char)
{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const vector unsigned char permA2inc = (vector unsigned char)
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const vector unsigned char magic = (vector unsigned char)
{0x01, 0x02, 0x01, 0x02, 0x04, 0x02, 0x01, 0x02,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const vector unsigned char extractPerm = (vector unsigned char)
{0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01,
0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01};
const vector unsigned char extractPermInc = (vector unsigned char)
{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)
{0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const vector unsigned char eightLeft = (vector unsigned char)
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08};
/*
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 alignment of
src & stride :-(
*/
uint8_t *srcCopy = src;
DECLARE_ALIGNED(16, uint8_t, dt)[16] = { deringThreshold };
const vector signed int zero = vec_splat_s32(0);
vector unsigned char 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;
DECLARE_ALIGNED(16, signed int, S)[8];
DECLARE_ALIGNED(16, int, tQP2)[4] = { c->QP/2 + 1 };
vector signed int vQP2 = vec_ld(0, tQP2);
vQP2 = vec_splat(vQP2, 0);
{
const vector unsigned char trunc_perm = (vector unsigned char)
{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_1 = vec_##op(trunc_src12, trunc_src34); \
const vector unsigned char s_2 = vec_##op(trunc_src56, trunc_src78); \
const vector unsigned char s_6 = vec_##op(s_1, s_2); \
const vector unsigned char s_8h = vec_mergeh(s_6, s_6); \
const vector unsigned char s_8l = vec_mergel(s_6, s_6); \
const vector unsigned char s_9 = vec_##op(s_8h, s_8l); \
const vector unsigned char s_9h = vec_mergeh(s_9, s_9); \
const vector unsigned char s_9l = vec_mergel(s_9, s_9); \
const vector unsigned char s_10 = vec_##op(s_9h, s_9l); \
const vector unsigned char s_10h = vec_mergeh(s_10, s_10); \
const vector unsigned char s_10l = vec_mergel(s_10, s_10); \
const vector unsigned char s_11 = vec_##op(s_10h, s_10l); \
const vector unsigned char s_11h = vec_mergeh(s_11, s_11); \
const vector unsigned char s_11l = vec_mergel(s_11, s_11); \
v_##op = vec_##op(s_11h, s_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);
}
{
const vector unsigned short mask1 = (vector unsigned short)
{0x0001, 0x0002, 0x0004, 0x0008,
0x0010, 0x0020, 0x0040, 0x0080};
const vector unsigned short mask2 = (vector unsigned short)
{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);
vector signed int sumA2;
vector signed int sumB2;
vector signed int sum0, sum1, sum2, sum3, sum4;
vector signed int sum5, sum6, sum7, sum8, sum9;
#define COMPARE(i) \
do { \
const vector unsigned char cmp = \
(vector unsigned char)vec_cmpgt(src##i, v_avg); \
const vector unsigned short cmpHi = \
(vector unsigned short)vec_mergeh(cmp, cmp); \
const vector unsigned short cmpLi = \
(vector unsigned short)vec_mergel(cmp, cmp); \
const vector signed short cmpHf = \
(vector signed short)vec_and(cmpHi, mask1); \
const vector signed short cmpLf = \
(vector signed short)vec_and(cmpLi, mask2); \
const vector signed int sump = vec_sum4s(cmpHf, zero); \
const vector signed int sumq = vec_sum4s(cmpLf, sump); \
sum##i = vec_sums(sumq, 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
{
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 :-( */
#define F_INIT() \
vector unsigned char tenRightM = tenRight; \
vector unsigned char permA1M = permA1; \
vector unsigned char permA2M = permA2; \
vector unsigned char extractPermM = extractPerm
#define F2(i, j, k, l) \
if (S[i] & (1 << (l+1))) { \
const vector unsigned char a_A = vec_perm(src##i, src##j, permA1M); \
const vector unsigned char a_B = vec_perm(a_A, src##k, permA2M); \
const vector signed int a_sump = \
(vector signed int)vec_msum(a_B, magic, (vector unsigned int)zero);\
vector signed int F = vec_sr(vec_sums(a_sump, vsint32_8), vuint32_4); \
const vector signed int p = \
(vector signed int)vec_perm(src##j, (vector unsigned char)zero, \
extractPermM); \
const vector signed int sum = vec_add(p, vQP2); \
const vector signed int diff = vec_sub(p, vQP2); \
vector signed int newpm; \
vector unsigned char newpm2, mask; \
F = vec_splat(F, 3); \
if (vec_all_lt(sum, F)) \
newpm = sum; \
else if (vec_all_gt(diff, F)) \
newpm = diff; \
else newpm = F; \
newpm2 = vec_splat((vector unsigned char)newpm, 15); \
mask = vec_add(identity, tenRightM); \
src##j = vec_perm(src##j, newpm2, mask); \
} \
permA1M = vec_add(permA1M, permA1inc); \
permA2M = vec_add(permA2M, permA2inc); \
tenRightM = vec_sro(tenRightM, eightLeft); \
extractPermM = vec_add(extractPermM, extractPermInc)
#define ITER(i, j, k) do { \
F_INIT(); \
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); \
} while (0)
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);
#define STORE_LINE(i) do { \
const vector unsigned char permST = \
vec_lvsr(i * stride, srcCopy); \
const vector unsigned char maskST = \
vec_perm((vector unsigned char)zero, \
(vector unsigned char)neg1, permST); \
src##i = vec_perm(src##i ,src##i, permST); \
sA##i= vec_sel(sA##i, src##i, maskST); \
sB##i= vec_sel(src##i, sB##i, maskST); \
vec_st(sA##i, i * stride, srcCopy); \
vec_st(sB##i, i * stride + 16, srcCopy); \
} while (0)
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 doHorizLowPass_altivec(a...) doHorizLowPass_C(a)
#define doHorizDefFilter_altivec(a...) doHorizDefFilter_C(a)
#define do_a_deblock_altivec(a...) do_a_deblock_C(a)
static inline void tempNoiseReducer_altivec(uint8_t *src, int stride,
uint8_t *tempBlurred, uint32_t *tempBlurredPast, int *maxNoise)
{
const vector signed char neg1 = vec_splat_s8(-1);
const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
const vector signed int zero = vec_splat_s32(0);
const vector signed short vsint16_1 = vec_splat_s16(1);
vector signed int v_dp = zero;
vector signed int v_sysdp = zero;
int d, sysd, i;
#define LOAD_LINE(src, i) \
register int j##src##i = i * stride; \
vector unsigned char perm##src##i = vec_lvsl(j##src##i, src); \
const vector unsigned char v_##src##A1##i = vec_ld(j##src##i, src); \
const vector unsigned char v_##src##A2##i = vec_ld(j##src##i + 16, src); \
const vector unsigned char v_##src##A##i = \
vec_perm(v_##src##A1##i, v_##src##A2##i, perm##src##i); \
vector signed short v_##src##Ass##i = \
(vector signed short)vec_mergeh((vector signed char)zero, \
(vector signed char)v_##src##A##i)
LOAD_LINE(src, 0);
LOAD_LINE(src, 1);
LOAD_LINE(src, 2);
LOAD_LINE(src, 3);
LOAD_LINE(src, 4);
LOAD_LINE(src, 5);
LOAD_LINE(src, 6);
LOAD_LINE(src, 7);
LOAD_LINE(tempBlurred, 0);
LOAD_LINE(tempBlurred, 1);
LOAD_LINE(tempBlurred, 2);
LOAD_LINE(tempBlurred, 3);
LOAD_LINE(tempBlurred, 4);
LOAD_LINE(tempBlurred, 5);
LOAD_LINE(tempBlurred, 6);
LOAD_LINE(tempBlurred, 7);
#undef LOAD_LINE
#define ACCUMULATE_DIFFS(i) do { \
vector signed short v_d = vec_sub(v_tempBlurredAss##i, \
v_srcAss##i); \
v_dp = vec_msums(v_d, v_d, v_dp); \
v_sysdp = vec_msums(v_d, vsint16_1, v_sysdp); \
} while (0)
ACCUMULATE_DIFFS(0);
ACCUMULATE_DIFFS(1);
ACCUMULATE_DIFFS(2);
ACCUMULATE_DIFFS(3);
ACCUMULATE_DIFFS(4);
ACCUMULATE_DIFFS(5);
ACCUMULATE_DIFFS(6);
ACCUMULATE_DIFFS(7);
#undef ACCUMULATE_DIFFS
tempBlurredPast[127]= maxNoise[0];
tempBlurredPast[128]= maxNoise[1];
tempBlurredPast[129]= maxNoise[2];
v_dp = vec_sums(v_dp, zero);
v_sysdp = vec_sums(v_sysdp, zero);
v_dp = vec_splat(v_dp, 3);
v_sysdp = vec_splat(v_sysdp, 3);
vec_ste(v_dp, 0, &d);
vec_ste(v_sysdp, 0, &sysd);
i = d;
d = (4*d
+(*(tempBlurredPast-256))
+(*(tempBlurredPast-1))+ (*(tempBlurredPast+1))
+(*(tempBlurredPast+256))
+4)>>3;
*tempBlurredPast=i;
if (d > maxNoise[1]) {
if (d < maxNoise[2]) {
#define OP(i) v_tempBlurredAss##i = vec_avg(v_tempBlurredAss##i, v_srcAss##i);
OP(0);
OP(1);
OP(2);
OP(3);
OP(4);
OP(5);
OP(6);
OP(7);
#undef OP
} else {
#define OP(i) v_tempBlurredAss##i = v_srcAss##i;
OP(0);
OP(1);
OP(2);
OP(3);
OP(4);
OP(5);
OP(6);
OP(7);
#undef OP
}
} else {
if (d < maxNoise[0]) {
const vector signed short vsint16_7 = vec_splat_s16(7);
const vector signed short vsint16_4 = vec_splat_s16(4);
const vector unsigned short vuint16_3 = vec_splat_u16(3);
#define OP(i) do { \
const vector signed short v_temp = \
vec_mladd(v_tempBlurredAss##i, vsint16_7, v_srcAss##i); \
const vector signed short v_temp2 = vec_add(v_temp, vsint16_4); \
v_tempBlurredAss##i = vec_sr(v_temp2, vuint16_3); \
} while (0)
OP(0);
OP(1);
OP(2);
OP(3);
OP(4);
OP(5);
OP(6);
OP(7);
#undef OP
} else {
const vector signed short vsint16_3 = vec_splat_s16(3);
const vector signed short vsint16_2 = vec_splat_s16(2);
#define OP(i) do { \
const vector signed short v_temp = \
vec_mladd(v_tempBlurredAss##i, vsint16_3, v_srcAss##i); \
const vector signed short v_temp2 = vec_add(v_temp, vsint16_2); \
v_tempBlurredAss##i = \
vec_sr(v_temp2, (vector unsigned short)vsint16_2); \
} while (0)
OP(0);
OP(1);
OP(2);
OP(3);
OP(4);
OP(5);
OP(6);
OP(7);
#undef OP
}
}
#define PACK_AND_STORE(src, i) do { \
const vector unsigned char perms = vec_lvsr(i * stride, src); \
const vector unsigned char vf = \
vec_packsu(v_tempBlurredAss##1, (vector signed short)zero); \
const vector unsigned char vg = vec_perm(vf, v_##src##A##i, permHH); \
const vector unsigned char mask = \
vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms); \
const vector unsigned char vg2 = vec_perm(vg, vg, perms); \
const vector unsigned char svA = vec_sel(v_##src##A1##i, vg2, mask); \
const vector unsigned char svB = vec_sel(vg2, v_##src##A2##i, mask); \
vec_st(svA, i * stride, src); \
vec_st(svB, i * stride + 16, src); \
} while (0)
PACK_AND_STORE(src, 0);
PACK_AND_STORE(src, 1);
PACK_AND_STORE(src, 2);
PACK_AND_STORE(src, 3);