mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
203 lines
7.6 KiB
203 lines
7.6 KiB
/* |
|
AltiVec-enhanced yuv2yuvX |
|
|
|
Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org> |
|
based on the equivalent C code in "postproc/swscale.c" |
|
|
|
|
|
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 |
|
*/ |
|
|
|
static const vector unsigned int altivec_vectorShiftInt19 = {19, 19, 19, 19}; |
|
static inline void |
|
altivec_packIntArrayToCharArray(int *val, uint8_t* dest, int dstW) { |
|
register int i; |
|
if ((unsigned long)dest % 16) { |
|
/* badly aligned store, we force store alignement */ |
|
/* and will handle load misalignement on val w/ vec_perm */ |
|
for (i = 0 ; (i < dstW) && |
|
(((unsigned long)dest + i) % 16) ; i++) { |
|
int t = val[i] >> 19; |
|
dest[i] = (t < 0) ? 0 : ((t > 255) ? 255 : t); |
|
} |
|
vector unsigned char perm1 = vec_lvsl(i << 2, val); |
|
vector signed int v1 = vec_ld(i << 2, val); |
|
for ( ; i < (dstW - 15); i+=16) { |
|
int offset = i << 2; |
|
vector signed int v2 = vec_ld(offset + 16, val); |
|
vector signed int v3 = vec_ld(offset + 32, val); |
|
vector signed int v4 = vec_ld(offset + 48, val); |
|
vector signed int v5 = vec_ld(offset + 64, val); |
|
vector signed int v12 = vec_perm(v1,v2,perm1); |
|
vector signed int v23 = vec_perm(v2,v3,perm1); |
|
vector signed int v34 = vec_perm(v3,v4,perm1); |
|
vector signed int v45 = vec_perm(v4,v5,perm1); |
|
|
|
vector signed int vA = vec_sra(v12, altivec_vectorShiftInt19); |
|
vector signed int vB = vec_sra(v23, altivec_vectorShiftInt19); |
|
vector signed int vC = vec_sra(v34, altivec_vectorShiftInt19); |
|
vector signed int vD = vec_sra(v45, altivec_vectorShiftInt19); |
|
vector unsigned short vs1 = vec_packsu(vA, vB); |
|
vector unsigned short vs2 = vec_packsu(vC, vD); |
|
vector unsigned char vf = vec_packsu(vs1, vs2); |
|
vec_st(vf, i, dest); |
|
v1 = v5; |
|
} |
|
} else { // dest is properly aligned, great |
|
for (i = 0; i < (dstW - 15); i+=16) { |
|
int offset = i << 2; |
|
vector signed int v1 = vec_ld(offset, val); |
|
vector signed int v2 = vec_ld(offset + 16, val); |
|
vector signed int v3 = vec_ld(offset + 32, val); |
|
vector signed int v4 = vec_ld(offset + 48, val); |
|
vector signed int v5 = vec_sra(v1, altivec_vectorShiftInt19); |
|
vector signed int v6 = vec_sra(v2, altivec_vectorShiftInt19); |
|
vector signed int v7 = vec_sra(v3, altivec_vectorShiftInt19); |
|
vector signed int v8 = vec_sra(v4, altivec_vectorShiftInt19); |
|
vector unsigned short vs1 = vec_packsu(v5, v6); |
|
vector unsigned short vs2 = vec_packsu(v7, v8); |
|
vector unsigned char vf = vec_packsu(vs1, vs2); |
|
vec_st(vf, i, dest); |
|
} |
|
} |
|
for ( ; i < dstW ; i++) { |
|
int t = val[i] >> 19; |
|
dest[i] = (t < 0) ? 0 : ((t > 255) ? 255 : t); |
|
} |
|
} |
|
|
|
static inline void |
|
yuv2yuvX_altivec_real(int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize, |
|
int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize, |
|
uint8_t *dest, uint8_t *uDest, uint8_t *vDest, int dstW, int chrDstW) |
|
{ |
|
const vector signed int vini = {(1 << 18), (1 << 18), (1 << 18), (1 << 18)}; |
|
register int i, j; |
|
{ |
|
int __attribute__ ((aligned (16))) val[dstW]; |
|
|
|
for (i = 0; i < (dstW -7); i+=4) { |
|
vec_st(vini, i << 2, val); |
|
} |
|
for (; i < dstW; i++) { |
|
val[i] = (1 << 18); |
|
} |
|
|
|
for (j = 0; j < lumFilterSize; j++) { |
|
vector signed short vLumFilter = vec_ld(j << 1, lumFilter); |
|
vector unsigned char perm0 = vec_lvsl(j << 1, lumFilter); |
|
vLumFilter = vec_perm(vLumFilter, vLumFilter, perm0); |
|
vLumFilter = vec_splat(vLumFilter, 0); // lumFilter[j] is loaded 8 times in vLumFilter |
|
|
|
vector unsigned char perm = vec_lvsl(0, lumSrc[j]); |
|
vector signed short l1 = vec_ld(0, lumSrc[j]); |
|
|
|
for (i = 0; i < (dstW - 7); i+=8) { |
|
int offset = i << 2; |
|
vector signed short l2 = vec_ld((i << 1) + 16, lumSrc[j]); |
|
|
|
vector signed int v1 = vec_ld(offset, val); |
|
vector signed int v2 = vec_ld(offset + 16, val); |
|
|
|
vector signed short ls = vec_perm(l1, l2, perm); // lumSrc[j][i] ... lumSrc[j][i+7] |
|
|
|
vector signed int i1 = vec_mule(vLumFilter, ls); |
|
vector signed int i2 = vec_mulo(vLumFilter, ls); |
|
|
|
vector signed int vf1 = vec_mergeh(i1, i2); |
|
vector signed int vf2 = vec_mergel(i1, i2); // lumSrc[j][i] * lumFilter[j] ... lumSrc[j][i+7] * lumFilter[j] |
|
|
|
vector signed int vo1 = vec_add(v1, vf1); |
|
vector signed int vo2 = vec_add(v2, vf2); |
|
|
|
vec_st(vo1, offset, val); |
|
vec_st(vo2, offset + 16, val); |
|
|
|
l1 = l2; |
|
} |
|
for ( ; i < dstW; i++) { |
|
val[i] += lumSrc[j][i] * lumFilter[j]; |
|
} |
|
} |
|
altivec_packIntArrayToCharArray(val,dest,dstW); |
|
} |
|
if (uDest != 0) { |
|
int __attribute__ ((aligned (16))) u[chrDstW]; |
|
int __attribute__ ((aligned (16))) v[chrDstW]; |
|
|
|
for (i = 0; i < (chrDstW -7); i+=4) { |
|
vec_st(vini, i << 2, u); |
|
vec_st(vini, i << 2, v); |
|
} |
|
for (; i < chrDstW; i++) { |
|
u[i] = (1 << 18); |
|
v[i] = (1 << 18); |
|
} |
|
|
|
for (j = 0; j < chrFilterSize; j++) { |
|
vector signed short vChrFilter = vec_ld(j << 1, chrFilter); |
|
vector unsigned char perm0 = vec_lvsl(j << 1, chrFilter); |
|
vChrFilter = vec_perm(vChrFilter, vChrFilter, perm0); |
|
vChrFilter = vec_splat(vChrFilter, 0); // chrFilter[j] is loaded 8 times in vChrFilter |
|
|
|
vector unsigned char perm = vec_lvsl(0, chrSrc[j]); |
|
vector signed short l1 = vec_ld(0, chrSrc[j]); |
|
vector signed short l1_V = vec_ld(2048 << 1, chrSrc[j]); |
|
|
|
for (i = 0; i < (chrDstW - 7); i+=8) { |
|
int offset = i << 2; |
|
vector signed short l2 = vec_ld((i << 1) + 16, chrSrc[j]); |
|
vector signed short l2_V = vec_ld(((i + 2048) << 1) + 16, chrSrc[j]); |
|
|
|
vector signed int v1 = vec_ld(offset, u); |
|
vector signed int v2 = vec_ld(offset + 16, u); |
|
vector signed int v1_V = vec_ld(offset, v); |
|
vector signed int v2_V = vec_ld(offset + 16, v); |
|
|
|
vector signed short ls = vec_perm(l1, l2, perm); // chrSrc[j][i] ... chrSrc[j][i+7] |
|
vector signed short ls_V = vec_perm(l1_V, l2_V, perm); // chrSrc[j][i+2048] ... chrSrc[j][i+2055] |
|
|
|
vector signed int i1 = vec_mule(vChrFilter, ls); |
|
vector signed int i2 = vec_mulo(vChrFilter, ls); |
|
vector signed int i1_V = vec_mule(vChrFilter, ls_V); |
|
vector signed int i2_V = vec_mulo(vChrFilter, ls_V); |
|
|
|
vector signed int vf1 = vec_mergeh(i1, i2); |
|
vector signed int vf2 = vec_mergel(i1, i2); // chrSrc[j][i] * chrFilter[j] ... chrSrc[j][i+7] * chrFilter[j] |
|
vector signed int vf1_V = vec_mergeh(i1_V, i2_V); |
|
vector signed int vf2_V = vec_mergel(i1_V, i2_V); // chrSrc[j][i] * chrFilter[j] ... chrSrc[j][i+7] * chrFilter[j] |
|
|
|
vector signed int vo1 = vec_add(v1, vf1); |
|
vector signed int vo2 = vec_add(v2, vf2); |
|
vector signed int vo1_V = vec_add(v1_V, vf1_V); |
|
vector signed int vo2_V = vec_add(v2_V, vf2_V); |
|
|
|
vec_st(vo1, offset, u); |
|
vec_st(vo2, offset + 16, u); |
|
vec_st(vo1_V, offset, v); |
|
vec_st(vo2_V, offset + 16, v); |
|
|
|
l1 = l2; |
|
l1_V = l2_V; |
|
} |
|
for ( ; i < chrDstW; i++) { |
|
u[i] += chrSrc[j][i] * chrFilter[j]; |
|
v[i] += chrSrc[j][i + 2048] * chrFilter[j]; |
|
} |
|
} |
|
altivec_packIntArrayToCharArray(u,uDest,chrDstW); |
|
altivec_packIntArrayToCharArray(v,vDest,chrDstW); |
|
} |
|
}
|
|
|