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ffmpeg/libavcodec/ppc/h264chroma_template.c

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/*
* Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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/mem.h"
/* this code assume that stride % 16 == 0 */
#define CHROMA_MC8_ALTIVEC_CORE(BIAS1, BIAS2) \
vsrc2ssH = (vec_s16)vec_mergeh(zero_u8v,(vec_u8)vsrc2uc);\
vsrc3ssH = (vec_s16)vec_mergeh(zero_u8v,(vec_u8)vsrc3uc);\
\
psum = vec_mladd(vA, vsrc0ssH, BIAS1);\
psum = vec_mladd(vB, vsrc1ssH, psum);\
psum = vec_mladd(vC, vsrc2ssH, psum);\
psum = vec_mladd(vD, vsrc3ssH, psum);\
psum = BIAS2(psum);\
psum = vec_sr(psum, v6us);\
\
vdst = vec_ld(0, dst);\
ppsum = (vec_u8)vec_pack(psum, psum);\
vfdst = vec_perm(vdst, ppsum, fperm);\
\
OP_U8_ALTIVEC(fsum, vfdst, vdst);\
\
vec_st(fsum, 0, dst);\
\
vsrc0ssH = vsrc2ssH;\
vsrc1ssH = vsrc3ssH;\
\
dst += stride;\
src += stride;
#define CHROMA_MC8_ALTIVEC_CORE_SIMPLE \
\
vsrc0ssH = (vec_s16)vec_mergeh(zero_u8v,(vec_u8)vsrc0uc);\
vsrc1ssH = (vec_s16)vec_mergeh(zero_u8v,(vec_u8)vsrc1uc);\
\
psum = vec_mladd(vA, vsrc0ssH, v32ss);\
psum = vec_mladd(vE, vsrc1ssH, psum);\
psum = vec_sr(psum, v6us);\
\
vdst = vec_ld(0, dst);\
ppsum = (vec_u8)vec_pack(psum, psum);\
vfdst = vec_perm(vdst, ppsum, fperm);\
\
OP_U8_ALTIVEC(fsum, vfdst, vdst);\
\
vec_st(fsum, 0, dst);\
\
dst += stride;\
src += stride;
#define noop(a) a
#define add28(a) vec_add(v28ss, a)
#ifdef PREFIX_h264_chroma_mc8_altivec
static void PREFIX_h264_chroma_mc8_altivec(uint8_t * dst, uint8_t * src,
int stride, int h, int x, int y) {
DECLARE_ALIGNED(16, signed int, ABCD)[4] =
{((8 - x) * (8 - y)),
(( x) * (8 - y)),
((8 - x) * ( y)),
(( x) * ( y))};
register int i;
vec_u8 fperm;
const vec_s32 vABCD = vec_ld(0, ABCD);
const vec_s16 vA = vec_splat((vec_s16)vABCD, 1);
const vec_s16 vB = vec_splat((vec_s16)vABCD, 3);
const vec_s16 vC = vec_splat((vec_s16)vABCD, 5);
const vec_s16 vD = vec_splat((vec_s16)vABCD, 7);
LOAD_ZERO;
const vec_s16 v32ss = vec_sl(vec_splat_s16(1),vec_splat_u16(5));
const vec_u16 v6us = vec_splat_u16(6);
register int loadSecond = (((unsigned long)src) % 16) <= 7 ? 0 : 1;
register int reallyBadAlign = (((unsigned long)src) % 16) == 15 ? 1 : 0;
vec_u8 vsrcAuc, av_uninit(vsrcBuc), vsrcperm0, vsrcperm1;
vec_u8 vsrc0uc, vsrc1uc;
vec_s16 vsrc0ssH, vsrc1ssH;
vec_u8 vsrcCuc, vsrc2uc, vsrc3uc;
vec_s16 vsrc2ssH, vsrc3ssH, psum;
vec_u8 vdst, ppsum, vfdst, fsum;
if (((unsigned long)dst) % 16 == 0) {
fperm = (vec_u8){0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17,
0x08, 0x09, 0x0A, 0x0B,
0x0C, 0x0D, 0x0E, 0x0F};
} else {
fperm = (vec_u8){0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07,
0x18, 0x19, 0x1A, 0x1B,
0x1C, 0x1D, 0x1E, 0x1F};
}
vsrcAuc = vec_ld(0, src);
if (loadSecond)
vsrcBuc = vec_ld(16, src);
vsrcperm0 = vec_lvsl(0, src);
vsrcperm1 = vec_lvsl(1, src);
vsrc0uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm0);
if (reallyBadAlign)
vsrc1uc = vsrcBuc;
else
vsrc1uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm1);
vsrc0ssH = (vec_s16)vec_mergeh(zero_u8v,(vec_u8)vsrc0uc);
vsrc1ssH = (vec_s16)vec_mergeh(zero_u8v,(vec_u8)vsrc1uc);
if (ABCD[3]) {
if (!loadSecond) {// -> !reallyBadAlign
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(stride + 0, src);
vsrc2uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm0);
vsrc3uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm1);
CHROMA_MC8_ALTIVEC_CORE(v32ss, noop)
}
} else {
vec_u8 vsrcDuc;
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(stride + 0, src);
vsrcDuc = vec_ld(stride + 16, src);
vsrc2uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm0);
if (reallyBadAlign)
vsrc3uc = vsrcDuc;
else
vsrc3uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm1);
CHROMA_MC8_ALTIVEC_CORE(v32ss, noop)
}
}
} else {
const vec_s16 vE = vec_add(vB, vC);
if (ABCD[2]) { // x == 0 B == 0
if (!loadSecond) {// -> !reallyBadAlign
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(stride + 0, src);
vsrc1uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm0);
CHROMA_MC8_ALTIVEC_CORE_SIMPLE
vsrc0uc = vsrc1uc;
}
} else {
vec_u8 vsrcDuc;
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(stride + 0, src);
vsrcDuc = vec_ld(stride + 15, src);
vsrc1uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm0);
CHROMA_MC8_ALTIVEC_CORE_SIMPLE
vsrc0uc = vsrc1uc;
}
}
} else { // y == 0 C == 0
if (!loadSecond) {// -> !reallyBadAlign
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(0, src);
vsrc0uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm0);
vsrc1uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm1);
CHROMA_MC8_ALTIVEC_CORE_SIMPLE
}
} else {
vec_u8 vsrcDuc;
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(0, src);
vsrcDuc = vec_ld(15, src);
vsrc0uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm0);
if (reallyBadAlign)
vsrc1uc = vsrcDuc;
else
vsrc1uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm1);
CHROMA_MC8_ALTIVEC_CORE_SIMPLE
}
}
}
}
}
#endif
/* this code assume that stride % 16 == 0 */
#ifdef PREFIX_no_rnd_vc1_chroma_mc8_altivec
static void PREFIX_no_rnd_vc1_chroma_mc8_altivec(uint8_t * dst, uint8_t * src, int stride, int h, int x, int y) {
DECLARE_ALIGNED(16, signed int, ABCD)[4] =
{((8 - x) * (8 - y)),
(( x) * (8 - y)),
((8 - x) * ( y)),
(( x) * ( y))};
register int i;
vec_u8 fperm;
const vec_s32 vABCD = vec_ld(0, ABCD);
const vec_s16 vA = vec_splat((vec_s16)vABCD, 1);
const vec_s16 vB = vec_splat((vec_s16)vABCD, 3);
const vec_s16 vC = vec_splat((vec_s16)vABCD, 5);
const vec_s16 vD = vec_splat((vec_s16)vABCD, 7);
LOAD_ZERO;
const vec_s16 v28ss = vec_sub(vec_sl(vec_splat_s16(1),vec_splat_u16(5)),vec_splat_s16(4));
const vec_u16 v6us = vec_splat_u16(6);
register int loadSecond = (((unsigned long)src) % 16) <= 7 ? 0 : 1;
register int reallyBadAlign = (((unsigned long)src) % 16) == 15 ? 1 : 0;
vec_u8 vsrcAuc, av_uninit(vsrcBuc), vsrcperm0, vsrcperm1;
vec_u8 vsrc0uc, vsrc1uc;
vec_s16 vsrc0ssH, vsrc1ssH;
vec_u8 vsrcCuc, vsrc2uc, vsrc3uc;
vec_s16 vsrc2ssH, vsrc3ssH, psum;
vec_u8 vdst, ppsum, vfdst, fsum;
if (((unsigned long)dst) % 16 == 0) {
fperm = (vec_u8){0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17,
0x08, 0x09, 0x0A, 0x0B,
0x0C, 0x0D, 0x0E, 0x0F};
} else {
fperm = (vec_u8){0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07,
0x18, 0x19, 0x1A, 0x1B,
0x1C, 0x1D, 0x1E, 0x1F};
}
vsrcAuc = vec_ld(0, src);
if (loadSecond)
vsrcBuc = vec_ld(16, src);
vsrcperm0 = vec_lvsl(0, src);
vsrcperm1 = vec_lvsl(1, src);
vsrc0uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm0);
if (reallyBadAlign)
vsrc1uc = vsrcBuc;
else
vsrc1uc = vec_perm(vsrcAuc, vsrcBuc, vsrcperm1);
vsrc0ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc0uc);
vsrc1ssH = (vec_s16)vec_mergeh(zero_u8v, (vec_u8)vsrc1uc);
if (!loadSecond) {// -> !reallyBadAlign
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(stride + 0, src);
vsrc2uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm0);
vsrc3uc = vec_perm(vsrcCuc, vsrcCuc, vsrcperm1);
CHROMA_MC8_ALTIVEC_CORE(vec_splat_s16(0), add28)
}
} else {
vec_u8 vsrcDuc;
for (i = 0 ; i < h ; i++) {
vsrcCuc = vec_ld(stride + 0, src);
vsrcDuc = vec_ld(stride + 16, src);
vsrc2uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm0);
if (reallyBadAlign)
vsrc3uc = vsrcDuc;
else
vsrc3uc = vec_perm(vsrcCuc, vsrcDuc, vsrcperm1);
CHROMA_MC8_ALTIVEC_CORE(vec_splat_s16(0), add28)
}
}
}
#endif
#undef noop
#undef add28
#undef CHROMA_MC8_ALTIVEC_CORE
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