diff options
Diffstat (limited to 'postproc/swscale_altivec_template.c')
| -rw-r--r-- | postproc/swscale_altivec_template.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/postproc/swscale_altivec_template.c b/postproc/swscale_altivec_template.c new file mode 100644 index 0000000000..0f6a3cda34 --- /dev/null +++ b/postproc/swscale_altivec_template.c @@ -0,0 +1,203 @@ +/* + 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); + } +} |