/* * AltiVec-enhanced yuv2yuvX * * Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org> * based on the equivalent C code in swscale.c * * 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 */ #define vzero vec_splat_s32(0) static inline void altivec_packIntArrayToCharArray(int *val, uint8_t* dest, int dstW) { register int i; vector unsigned int altivec_vectorShiftInt19 = vec_add(vec_splat_u32(10), vec_splat_u32(9)); if ((unsigned long)dest % 16) { /* badly aligned store, we force store alignment */ /* and will handle load misalignment on val w/ vec_perm */ vector unsigned char perm1; vector signed int v1; 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); } perm1 = vec_lvsl(i << 2, val); 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(const int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize, const 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; { DECLARE_ALIGNED(16, int, 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 l1, vLumFilter = vec_ld(j << 1, lumFilter); vector unsigned char perm, 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 perm = vec_lvsl(0, lumSrc[j]); 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) { DECLARE_ALIGNED(16, int, u)[chrDstW]; DECLARE_ALIGNED(16, int, 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 l1, l1_V, vChrFilter = vec_ld(j << 1, chrFilter); vector unsigned char perm, 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 perm = vec_lvsl(0, chrSrc[j]); l1 = vec_ld(0, chrSrc[j]); 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); } } static inline void hScale_altivec_real(int16_t *dst, int dstW, const uint8_t *src, int srcW, int xInc, const int16_t *filter, const int16_t *filterPos, int filterSize) { register int i; DECLARE_ALIGNED(16, int, tempo)[4]; if (filterSize % 4) { for (i=0; i<dstW; i++) { register int j; register int srcPos = filterPos[i]; register int val = 0; for (j=0; j<filterSize; j++) { val += ((int)src[srcPos + j])*filter[filterSize*i + j]; } dst[i] = FFMIN(val>>7, (1<<15)-1); } } else switch (filterSize) { case 4: { for (i=0; i<dstW; i++) { register int srcPos = filterPos[i]; vector unsigned char src_v0 = vec_ld(srcPos, src); vector unsigned char src_v1, src_vF; vector signed short src_v, filter_v; vector signed int val_vEven, val_s; if ((((int)src + srcPos)% 16) > 12) { src_v1 = vec_ld(srcPos + 16, src); } src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src)); src_v = // vec_unpackh sign-extends... (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF)); // now put our elements in the even slots src_v = vec_mergeh(src_v, (vector signed short)vzero); filter_v = vec_ld(i << 3, filter); // The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2). // The neat trick: We only care for half the elements, // high or low depending on (i<<3)%16 (it's 0 or 8 here), // and we're going to use vec_mule, so we choose // carefully how to "unpack" the elements into the even slots. if ((i << 3) % 16) filter_v = vec_mergel(filter_v, (vector signed short)vzero); else filter_v = vec_mergeh(filter_v, (vector signed short)vzero); val_vEven = vec_mule(src_v, filter_v); val_s = vec_sums(val_vEven, vzero); vec_st(val_s, 0, tempo); dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1); } } break; case 8: { for (i=0; i<dstW; i++) { register int srcPos = filterPos[i]; vector unsigned char src_v0 = vec_ld(srcPos, src); vector unsigned char src_v1, src_vF; vector signed short src_v, filter_v; vector signed int val_v, val_s; if ((((int)src + srcPos)% 16) > 8) { src_v1 = vec_ld(srcPos + 16, src); } src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src)); src_v = // vec_unpackh sign-extends... (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF)); filter_v = vec_ld(i << 4, filter); // the 4 above is 3 (filterSize == 8) + 1 (sizeof(short) == 2) val_v = vec_msums(src_v, filter_v, (vector signed int)vzero); val_s = vec_sums(val_v, vzero); vec_st(val_s, 0, tempo); dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1); } } break; case 16: { for (i=0; i<dstW; i++) { register int srcPos = filterPos[i]; vector unsigned char src_v0 = vec_ld(srcPos, src); vector unsigned char src_v1 = vec_ld(srcPos + 16, src); vector unsigned char src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src)); vector signed short src_vA = // vec_unpackh sign-extends... (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF)); vector signed short src_vB = // vec_unpackh sign-extends... (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF)); vector signed short filter_v0 = vec_ld(i << 5, filter); vector signed short filter_v1 = vec_ld((i << 5) + 16, filter); // the 5 above are 4 (filterSize == 16) + 1 (sizeof(short) == 2) vector signed int val_acc = vec_msums(src_vA, filter_v0, (vector signed int)vzero); vector signed int val_v = vec_msums(src_vB, filter_v1, val_acc); vector signed int val_s = vec_sums(val_v, vzero); vec_st(val_s, 0, tempo); dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1); } } break; default: { for (i=0; i<dstW; i++) { register int j; register int srcPos = filterPos[i]; vector signed int val_s, val_v = (vector signed int)vzero; vector signed short filter_v0R = vec_ld(i * 2 * filterSize, filter); vector unsigned char permF = vec_lvsl((i * 2 * filterSize), filter); vector unsigned char src_v0 = vec_ld(srcPos, src); vector unsigned char permS = vec_lvsl(srcPos, src); for (j = 0 ; j < filterSize - 15; j += 16) { vector unsigned char src_v1 = vec_ld(srcPos + j + 16, src); vector unsigned char src_vF = vec_perm(src_v0, src_v1, permS); vector signed short src_vA = // vec_unpackh sign-extends... (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF)); vector signed short src_vB = // vec_unpackh sign-extends... (vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF)); vector signed short filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter); vector signed short filter_v2R = vec_ld((i * 2 * filterSize) + (j * 2) + 32, filter); vector signed short filter_v0 = vec_perm(filter_v0R, filter_v1R, permF); vector signed short filter_v1 = vec_perm(filter_v1R, filter_v2R, permF); vector signed int val_acc = vec_msums(src_vA, filter_v0, val_v); val_v = vec_msums(src_vB, filter_v1, val_acc); filter_v0R = filter_v2R; src_v0 = src_v1; } if (j < filterSize-7) { // loading src_v0 is useless, it's already done above //vector unsigned char src_v0 = vec_ld(srcPos + j, src); vector unsigned char src_v1, src_vF; vector signed short src_v, filter_v1R, filter_v; if ((((int)src + srcPos)% 16) > 8) { src_v1 = vec_ld(srcPos + j + 16, src); } src_vF = vec_perm(src_v0, src_v1, permS); src_v = // vec_unpackh sign-extends... (vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF)); // loading filter_v0R is useless, it's already done above //vector signed short filter_v0R = vec_ld((i * 2 * filterSize) + j, filter); filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter); filter_v = vec_perm(filter_v0R, filter_v1R, permF); val_v = vec_msums(src_v, filter_v, val_v); } val_s = vec_sums(val_v, vzero); vec_st(val_s, 0, tempo); dst[i] = FFMIN(tempo[3]>>7, (1<<15)-1); } } } } static inline int yv12toyuy2_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) { uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY; // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]); uint8_t *ysrc = src[0]; uint8_t *usrc = src[1]; uint8_t *vsrc = src[2]; const int width = c->srcW; const int height = srcSliceH; const int lumStride = srcStride[0]; const int chromStride = srcStride[1]; const int dstStride = dstStride_a[0]; const vector unsigned char yperm = vec_lvsl(0, ysrc); const int vertLumPerChroma = 2; register unsigned int y; if (width&15) { yv12toyuy2(ysrc, usrc, vsrc, dst, c->srcW, srcSliceH, lumStride, chromStride, dstStride); return srcSliceH; } /* This code assumes: 1) dst is 16 bytes-aligned 2) dstStride is a multiple of 16 3) width is a multiple of 16 4) lum & chrom stride are multiples of 8 */ for (y=0; y<height; y++) { int i; for (i = 0; i < width - 31; i+= 32) { const unsigned int j = i >> 1; vector unsigned char v_yA = vec_ld(i, ysrc); vector unsigned char v_yB = vec_ld(i + 16, ysrc); vector unsigned char v_yC = vec_ld(i + 32, ysrc); vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm); vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm); vector unsigned char v_uA = vec_ld(j, usrc); vector unsigned char v_uB = vec_ld(j + 16, usrc); vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc)); vector unsigned char v_vA = vec_ld(j, vsrc); vector unsigned char v_vB = vec_ld(j + 16, vsrc); vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc)); vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); vector unsigned char v_uv_b = vec_mergel(v_u, v_v); vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a); vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a); vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b); vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b); vec_st(v_yuy2_0, (i << 1), dst); vec_st(v_yuy2_1, (i << 1) + 16, dst); vec_st(v_yuy2_2, (i << 1) + 32, dst); vec_st(v_yuy2_3, (i << 1) + 48, dst); } if (i < width) { const unsigned int j = i >> 1; vector unsigned char v_y1 = vec_ld(i, ysrc); vector unsigned char v_u = vec_ld(j, usrc); vector unsigned char v_v = vec_ld(j, vsrc); vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a); vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a); vec_st(v_yuy2_0, (i << 1), dst); vec_st(v_yuy2_1, (i << 1) + 16, dst); } if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) { usrc += chromStride; vsrc += chromStride; } ysrc += lumStride; dst += dstStride; } return srcSliceH; } static inline int yv12touyvy_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) { uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY; // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]); uint8_t *ysrc = src[0]; uint8_t *usrc = src[1]; uint8_t *vsrc = src[2]; const int width = c->srcW; const int height = srcSliceH; const int lumStride = srcStride[0]; const int chromStride = srcStride[1]; const int dstStride = dstStride_a[0]; const int vertLumPerChroma = 2; const vector unsigned char yperm = vec_lvsl(0, ysrc); register unsigned int y; if (width&15) { yv12touyvy(ysrc, usrc, vsrc, dst, c->srcW, srcSliceH, lumStride, chromStride, dstStride); return srcSliceH; } /* This code assumes: 1) dst is 16 bytes-aligned 2) dstStride is a multiple of 16 3) width is a multiple of 16 4) lum & chrom stride are multiples of 8 */ for (y=0; y<height; y++) { int i; for (i = 0; i < width - 31; i+= 32) { const unsigned int j = i >> 1; vector unsigned char v_yA = vec_ld(i, ysrc); vector unsigned char v_yB = vec_ld(i + 16, ysrc); vector unsigned char v_yC = vec_ld(i + 32, ysrc); vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm); vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm); vector unsigned char v_uA = vec_ld(j, usrc); vector unsigned char v_uB = vec_ld(j + 16, usrc); vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc)); vector unsigned char v_vA = vec_ld(j, vsrc); vector unsigned char v_vB = vec_ld(j + 16, vsrc); vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc)); vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); vector unsigned char v_uv_b = vec_mergel(v_u, v_v); vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1); vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1); vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2); vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2); vec_st(v_uyvy_0, (i << 1), dst); vec_st(v_uyvy_1, (i << 1) + 16, dst); vec_st(v_uyvy_2, (i << 1) + 32, dst); vec_st(v_uyvy_3, (i << 1) + 48, dst); } if (i < width) { const unsigned int j = i >> 1; vector unsigned char v_y1 = vec_ld(i, ysrc); vector unsigned char v_u = vec_ld(j, usrc); vector unsigned char v_v = vec_ld(j, vsrc); vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1); vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1); vec_st(v_uyvy_0, (i << 1), dst); vec_st(v_uyvy_1, (i << 1) + 16, dst); } if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) { usrc += chromStride; vsrc += chromStride; } ysrc += lumStride; dst += dstStride; } return srcSliceH; }