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Merged fixes for PPC, should improve GNU gcc support nad fix a couple of bugs for wrong data alignment
/***************************************************************************** * * XVID MPEG-4 VIDEO CODEC * - 8x8 block-based halfpel interpolation with altivec optimization - * * Copyright(C) 2004 Christoph Naegeli <chn@kbw.ch> * * 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 * * $Id: interpolate8x8_altivec.c,v 1.3 2004-12-09 23:02:54 edgomez Exp $ * ****************************************************************************/ #ifdef HAVE_ALTIVEC_H #include <altivec.h> #endif #include "../../portab.h" #undef DEBUG #include <stdio.h> static inline unsigned build_prefetch(unsigned char block_size, unsigned char block_count, short stride) { if(block_size > 31) block_size = 0; return ((block_size << 24) | (block_count << 16) | stride); } #define NO_ROUNDING #define ROUNDING \ s1 = vec_and(vec_add(s1, s2), vec_splat_u8(1)); \ d = vec_sub(d, s1); #define INTERPLATE8X8_HALFPEL_H(round) \ s1 = vec_perm(vec_ld(0, src), vec_ld(16, src), vec_lvsl(0, src)); \ s2 = vec_perm(s1, s1, s2_mask); \ d = vec_avg(s1, s2); \ round; \ mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ d = vec_perm(d, d, vec_lvsl(0, dst)); \ d = vec_sel(d, vec_ld(0, dst), mask); \ vec_st(d, 0, dst); \ dst += stride; \ src += stride /* This function assumes: * dst is 8 byte aligned * src is unaligned * stride is a multiple of 8 */ void interpolate8x8_halfpel_h_altivec_c( uint8_t *dst, uint8_t *src, const uint32_t stride, const uint32_t rounding) { register vector unsigned char s1, s2; register vector unsigned char d; register vector unsigned char mask; register vector unsigned char s2_mask; register vector unsigned char mask_stencil; #ifdef DEBUG /* Dump alignment errors if DEBUG is defined */ if(((unsigned long)dst) & 0x7) fprintf(stderr, "interpolate8x8_halfpel_h_altivec_c:incorrect align, dst: %lx\n", (long)dst); if(stride & 0x7) fprintf(stderr, "interpolate8x8_halfpel_h_altivec_c:incorrect stride, stride: %u\n", stride); #endif s2_mask = vec_lvsl(1, (unsigned char*)0); mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); if(rounding) { INTERPLATE8X8_HALFPEL_H(ROUNDING); INTERPLATE8X8_HALFPEL_H(ROUNDING); INTERPLATE8X8_HALFPEL_H(ROUNDING); INTERPLATE8X8_HALFPEL_H(ROUNDING); INTERPLATE8X8_HALFPEL_H(ROUNDING); INTERPLATE8X8_HALFPEL_H(ROUNDING); INTERPLATE8X8_HALFPEL_H(ROUNDING); INTERPLATE8X8_HALFPEL_H(ROUNDING); } else { INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); INTERPLATE8X8_HALFPEL_H(NO_ROUNDING); } } #define INTERPLATE8X8_HALFPEL_V(round) \ s1 = vec_perm(vec_ld(0, src), vec_ld(16, src), vec_lvsl(0, src)); \ s2 = vec_perm(vec_ld(0, src + stride), vec_ld(16, src + stride), vec_lvsl(0, src + stride)); \ d = vec_avg(s1, s2); \ round; \ mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ d = vec_perm(d, d, vec_lvsl(0, dst)); \ d = vec_sel(d, vec_ld(0, dst), mask); \ vec_st(d, 0, dst); \ dst += stride; \ src += stride /* * This function assumes * dst is 8 byte aligned * src is unaligned * stride is a multiple of 8 */ void interpolate8x8_halfpel_v_altivec_c( uint8_t *dst, uint8_t *src, const uint32_t stride, const uint32_t rounding) { vector unsigned char s1, s2; vector unsigned char d; vector unsigned char mask; vector unsigned char mask_stencil; #ifdef DEBUG /* if this is on, print alignment errors */ if(((unsigned long)dst) & 0x7) fprintf(stderr, "interpolate8x8_halfpel_v_altivec_c:incorrect align, dst: %lx\n", (long)dst); if(stride & 0x7) fprintf(stderr, "interpolate8x8_halfpel_v_altivec_c:incorrect stride, stride: %u\n", stride); #endif mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); if(rounding) { INTERPLATE8X8_HALFPEL_V(ROUNDING); INTERPLATE8X8_HALFPEL_V(ROUNDING); INTERPLATE8X8_HALFPEL_V(ROUNDING); INTERPLATE8X8_HALFPEL_V(ROUNDING); INTERPLATE8X8_HALFPEL_V(ROUNDING); INTERPLATE8X8_HALFPEL_V(ROUNDING); INTERPLATE8X8_HALFPEL_V(ROUNDING); INTERPLATE8X8_HALFPEL_V(ROUNDING); } else { INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); INTERPLATE8X8_HALFPEL_V(NO_ROUNDING); } } #define INTERPOLATE8X8_HALFPEL_HV(adding) \ t = vec_perm(vec_ld(0, src), vec_ld(16, src), vec_lvsl(0, src)); \ s1 = (vector unsigned short)vec_mergeh(zerovec, t); \ t = vec_perm(vec_ld(1, src), vec_ld(17, src), vec_lvsl(1, src)); \ s2 = (vector unsigned short)vec_mergeh(zerovec, t); \ t = vec_perm(vec_ld(0, src + stride), vec_ld(16, src + stride), vec_lvsl(0, src + stride)); \ s3 = (vector unsigned short)vec_mergeh(zerovec, t); \ t = vec_perm(vec_ld(1, src + stride), vec_ld(17, src + stride), vec_lvsl(1, src + stride)); \ s4 = (vector unsigned short)vec_mergeh(zerovec, t); \ s1 = vec_add(s1,s2);\ s3 = vec_add(s3,s4);\ s1 = vec_add(s1,s3);\ s1 = vec_add(s1, adding); \ s1 = vec_sr(s1, two); \ t = vec_pack(s1, s1); \ mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ t = vec_sel(t, vec_ld(0, dst), mask); \ vec_st(t, 0, dst); \ dst += stride; \ src += stride void interpolate8x8_halfpel_hv_altivec_c(uint8_t *dst, uint8_t *src, const uint32_t stride, const uint32_t rounding) { vector unsigned short s1, s2, s3, s4; vector unsigned char t; vector unsigned short one, two; vector unsigned char zerovec; vector unsigned char mask; vector unsigned char mask_stencil; /* Initialisation stuff */ zerovec = vec_splat_u8(0); one = vec_splat_u16(1); two = vec_splat_u16(2); mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); if(rounding) { INTERPOLATE8X8_HALFPEL_HV(one); INTERPOLATE8X8_HALFPEL_HV(one); INTERPOLATE8X8_HALFPEL_HV(one); INTERPOLATE8X8_HALFPEL_HV(one); INTERPOLATE8X8_HALFPEL_HV(one); INTERPOLATE8X8_HALFPEL_HV(one); INTERPOLATE8X8_HALFPEL_HV(one); INTERPOLATE8X8_HALFPEL_HV(one); } else { INTERPOLATE8X8_HALFPEL_HV(two); INTERPOLATE8X8_HALFPEL_HV(two); INTERPOLATE8X8_HALFPEL_HV(two); INTERPOLATE8X8_HALFPEL_HV(two); INTERPOLATE8X8_HALFPEL_HV(two); INTERPOLATE8X8_HALFPEL_HV(two); INTERPOLATE8X8_HALFPEL_HV(two); INTERPOLATE8X8_HALFPEL_HV(two); } } /* * This function assumes: * dst is 8 byte aligned * src1 is unaligned * src2 is unaligned * stirde is a multiple of 8 * rounding is smaller than than max signed short + 2 */ void interpolate8x8_avg2_altivec_c( uint8_t *dst, const uint8_t *src1, const uint8_t *src2, const uint32_t stride, const uint32_t rounding, const uint32_t height) { uint32_t i; vector unsigned char t; vector unsigned char mask; vector unsigned char mask_stencil; vector unsigned char zerovec; vector signed short s1, s2; vector signed short d; vector signed short round; #ifdef DEBUG /* If this is on, print alignment errors */ if(((unsigned long)dst) & 0x7) fprintf(stderr, "interpolate8x8_avg2_altivec_c:incorrect align, dst: %lx\n", (long)dst); if(stride & 0x7) fprintf(stderr, "interpolate8x8_avg2_altivec_c:incorrect stride, stride: %u\n", stride); if(rounding > (32767 + 2)) fprintf(stderr, "interpolate8x8_avg2_altivec_c:incorrect rounding, rounding: %d\n", rounding); #endif /* initialisation */ zerovec = vec_splat_u8(0); *((short*)&round) = 1 - rounding; round = vec_splat(round, 0); mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); for(i = 0; i < height; i++) { t = vec_perm(vec_ld(0, src1), vec_ld(16, src1), vec_lvsl(0, src1)); d = vec_add((vector signed short)zerovec, round); s1 = (vector signed short)vec_mergeh(zerovec, t); t = vec_perm(vec_ld(0, src2), vec_ld(16, src2), vec_lvsl(0, src2)); d = vec_add(d, s1); s2 = (vector signed short)vec_mergeh(zerovec, t); d = vec_add(d, s2); d = vec_sr(d, vec_splat_u16(1)); t = vec_pack((vector unsigned short)d, (vector unsigned short)zerovec); mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); t = vec_perm(t, t, vec_lvsl(0, dst)); t = vec_sel(t, vec_ld(0, dst), mask); vec_st(t, 0, dst); dst += stride; src1 += stride; src2 += stride; } } #define INTERPOLATE8X8_AVG4() \ d = r; \ \ t = vec_perm(vec_ld(0, src1), vec_ld(16, src1), vec_lvsl(0, src1)); \ s = (vector signed short)vec_mergeh(zerovec, t); \ d = vec_add(d, s); \ \ t = vec_perm(vec_ld(0, src2), vec_ld(16, src2), vec_lvsl(0, src2)); \ s = (vector signed short)vec_mergeh(zerovec, t); \ d = vec_add(d, s); \ \ t = vec_perm(vec_ld(0, src3), vec_ld(16, src3), vec_lvsl(0, src3)); \ s = (vector signed short)vec_mergeh(zerovec, t); \ d = vec_add(d, s); \ \ t = vec_perm(vec_ld(0, src4), vec_ld(16, src4), vec_lvsl(0, src4)); \ s = (vector signed short)vec_mergeh(zerovec, t); \ d = vec_add(d, s); \ \ d = vec_sr(d, shift); \ \ t = vec_pack((vector unsigned short)d, (vector unsigned short)zerovec); \ mask = vec_perm(mask_stencil, mask_stencil, vec_lvsl(0, dst)); \ t = vec_perm(t, t, vec_lvsl(0, dst)); \ t = vec_sel(t, vec_ld(0, dst), mask); \ vec_st(t, 0, dst); \ \ dst += stride; \ src1 += stride; \ src2 += stride; \ src3 += stride; \ src4 += stride /* This function assumes: * dst is 8 byte aligned * src1, src2, src3, src4 are unaligned * stride is a multiple of 8 */ void interpolate8x8_avg4_altivec_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, const uint8_t *src3, const uint8_t *src4, const uint32_t stride, const uint32_t rounding) { vector signed short r; register vector signed short s, d; register vector unsigned short shift; register vector unsigned char t; register vector unsigned char zerovec; register vector unsigned char mask; register vector unsigned char mask_stencil; #ifdef DEBUG /* if debug is set, print alignment errors */ if(((unsigned)dst) & 0x7) fprintf(stderr, "interpolate8x8_avg4_altivec_c:incorrect align, dst: %lx\n", (long)dst); if(stride & 0x7) fprintf(stderr, "interpolate8x8_avg4_altivec_c:incorrect stride, stride: %u\n", stride); #endif /* Initialization */ zerovec = vec_splat_u8(0); *((short*)&r) = 2 - rounding; r = vec_splat(r, 0); shift = vec_splat_u16(2); mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); /* interpolate */ INTERPOLATE8X8_AVG4(); INTERPOLATE8X8_AVG4(); INTERPOLATE8X8_AVG4(); INTERPOLATE8X8_AVG4(); INTERPOLATE8X8_AVG4(); INTERPOLATE8X8_AVG4(); INTERPOLATE8X8_AVG4(); INTERPOLATE8X8_AVG4(); } /* * This function assumes: * dst is 8 byte aligned * src is unaligned * stirde is a multiple of 8 * rounding is ignored */ void interpolate8x8_halfpel_add_altivec_c(uint8_t *dst, const uint8_t *src, const uint32_t stride, const uint32_t rouding) { interpolate8x8_avg2_altivec_c(dst, dst, src, stride, 0, 8); } #define INTERPOLATE8X8_HALFPEL_H_ADD_ROUND() \ mask_dst = vec_lvsl(0,dst); \ s1 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src)); \ d = vec_perm(vec_ld(0,dst),vec_ld(16,dst),mask_dst); \ \ s2 = vec_perm(s1,s1,rot1);\ tmp = vec_avg(s1,s2);\ s1 = vec_xor(s1,s2);\ s1 = vec_sub(tmp,vec_and(s1,one));\ \ d = vec_avg(s1,d);\ \ mask = vec_perm(mask_stencil, mask_stencil, mask_dst); \ d = vec_perm(d,d,mask_dst); \ d = vec_sel(d,vec_ld(0,dst),mask); \ vec_st(d,0,dst); \ \ dst += stride; \ src += stride #define INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND() \ mask_dst = vec_lvsl(0,dst); \ s1 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src)); \ d = vec_perm(vec_ld(0,dst),vec_ld(16,dst),mask_dst); \ \ s1 = vec_avg(s1, vec_perm(s1,s1,rot1));\ d = vec_avg(s1,d);\ \ mask = vec_perm(mask_stencil,mask_stencil,mask_dst);\ d = vec_perm(d,d,mask_dst);\ d = vec_sel(d,vec_ld(0,dst),mask);\ vec_st(d,0,dst);\ \ dst += stride;\ src += stride /* * This function assumes: * dst is 8 byte aligned * src is unaligned * stride is a multiple of 8 */ void interpolate8x8_halfpel_h_add_altivec_c(uint8_t *dst, uint8_t *src, const uint32_t stride, const uint32_t rounding) { register vector unsigned char s1,s2; register vector unsigned char d; register vector unsigned char tmp; register vector unsigned char mask_dst; register vector unsigned char one; register vector unsigned char rot1; register vector unsigned char mask_stencil; register vector unsigned char mask; #ifdef DEBUG if(((unsigned)dst) & 0x7) fprintf(stderr, "interpolate8x8_halfpel_h_add_altivec_c:incorrect align, dst: %lx\n", (long)dst); if(stride & 0x7) fprintf(stderr, "interpolate8x8_halfpel_h_add_altivec_c:incorrect stride, stride: %u\n", stride); #endif /* initialization */ mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); one = vec_splat_u8(1); rot1 = vec_lvsl(1,(unsigned char*)0); if(rounding) { INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_ROUND(); } else { INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_H_ADD_NOROUND(); } } #define INTERPOLATE8X8_HALFPEL_V_ADD_ROUND()\ src += stride;\ mask_dst = vec_lvsl(0,dst);\ s2 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src));\ d = vec_perm(vec_ld(0,dst),vec_ld(16,dst),mask_dst);\ \ tmp = vec_avg(s1,s2);\ s1 = vec_xor(s1,s2);\ s1 = vec_sub(tmp,vec_and(s1,vec_splat_u8(1)));\ d = vec_avg(s1,d);\ \ mask = vec_perm(mask_stencil,mask_stencil,mask_dst);\ d = vec_perm(d,d,mask_dst);\ d = vec_sel(d,vec_ld(0,dst),mask);\ vec_st(d,0,dst);\ \ s1 = s2;\ \ dst += stride #define INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND()\ src += stride;\ mask_dst = vec_lvsl(0,dst);\ s2 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src));\ d = vec_perm(vec_ld(0,dst),vec_ld(16,dst),mask_dst);\ \ s1 = vec_avg(s1,s2);\ d = vec_avg(s1,d);\ \ mask = vec_perm(mask_stencil,mask_stencil,mask_dst);\ d = vec_perm(d,d,mask_dst);\ d = vec_sel(d,vec_ld(0,dst),mask);\ vec_st(d,0,dst);\ \ s1 = s2;\ dst += stride /* * This function assumes: * dst: 8 byte aligned * src: unaligned * stride is a multiple of 8 */ void interpolate8x8_halfpel_v_add_altivec_c(uint8_t *dst, uint8_t *src, const uint32_t stride, const uint32_t rounding) { register vector unsigned char s1,s2; register vector unsigned char tmp; register vector unsigned char d; register vector unsigned char mask; register vector unsigned char mask_dst; register vector unsigned char mask_stencil; #ifdef DEBUG if(((unsigned)dst) & 0x7) fprintf(stderr, "interpolate8x8_halfpel_v_add_altivec_c:incorrect align, dst: %lx\n", (long)dst); if(stride & 0x7) fprintf(stderr, "interpolate8x8_halfpel_v_add_altivec_c:incorrect align, dst: %u\n", stride); #endif /* initialization */ mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); if(rounding) { /* Interpolate vertical with rounding */ s1 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src)); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_ROUND(); } else { /* Interpolate vertical without rounding */ s1 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src)); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_V_ADD_NOROUND(); } } #define INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND()\ src += stride;\ mask_dst = vec_lvsl(0,dst);\ c10 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src));\ d = vec_perm(vec_ld(0,dst),vec_ld(16,dst),mask_dst);\ c11 = vec_perm(c10,c10,rot1);\ \ s00 = (vector unsigned short)vec_mergeh(zero,c00);\ s01 = (vector unsigned short)vec_mergeh(zero,c01);\ s10 = (vector unsigned short)vec_mergeh(zero,c10);\ s11 = (vector unsigned short)vec_mergeh(zero,c11);\ \ s00 = vec_add(s00,s10);\ s01 = vec_add(s01,s11);\ s00 = vec_add(s00,s01);\ s00 = vec_add(s00,one);\ \ s00 = vec_sr(s00,two);\ s00 = vec_add(s00, (vector unsigned short)vec_mergeh(zero,d));\ s00 = vec_sr(s00,one);\ \ d = vec_pack(s00,s00);\ mask = vec_perm(mask_stencil,mask_stencil,mask_dst);\ d = vec_sel(d,vec_ld(0,dst),mask);\ vec_st(d,0,dst);\ \ c00 = c10;\ c01 = c11;\ dst += stride #define INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND()\ src += stride;\ mask_dst = vec_lvsl(0,dst);\ c10 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src));\ d = vec_perm(vec_ld(0,dst),vec_ld(16,dst),mask_dst);\ c11 = vec_perm(c10,c10,rot1);\ \ s00 = (vector unsigned short)vec_mergeh(zero,c00);\ s01 = (vector unsigned short)vec_mergeh(zero,c01);\ s10 = (vector unsigned short)vec_mergeh(zero,c10);\ s11 = (vector unsigned short)vec_mergeh(zero,c11);\ \ s00 = vec_add(s00,s10);\ s01 = vec_add(s01,s11);\ s00 = vec_add(s00,s01);\ s00 = vec_add(s00,two);\ s00 = vec_sr(s00,two);\ \ c00 = vec_pack(s00,s00);\ d = vec_avg(d,c00);\ \ mask = vec_perm(mask_stencil,mask_stencil,mask_dst);\ d = vec_perm(d,d,mask_dst);\ d = vec_sel(d,vec_ld(0,dst),mask);\ vec_st(d,0,dst);\ \ c00 = c10;\ c01 = c11;\ dst += stride /* * This function assumes: * dst: 8 byte aligned * src: unaligned * stride: multiple of 8 */ void interpolate8x8_halfpel_hv_add_altivec_c(uint8_t *dst, uint8_t *src, const uint32_t stride, const uint32_t rounding) { register vector unsigned char c00,c10,c01,c11; register vector unsigned short s00,s10,s01,s11; register vector unsigned char d; register vector unsigned char mask; register vector unsigned char mask_stencil; register vector unsigned char rot1; register vector unsigned char mask_dst; register vector unsigned char zero; register vector unsigned short one,two; #ifdef DEBUG if(((unsigned)dst) & 0x7) fprintf(stderr, "interpolate8x8_halfpel_hv_add_altivec_c:incorrect align, dst: %lx\n", (long)dst); if(stride & 0x7) fprintf(stderr, "interpolate8x8_halfpel_hv_add_altivec_c:incorrect stride, stride: %u\n", stride); #endif /* initialization */ mask_stencil = vec_pack(vec_splat_u16(0), vec_splat_u16(-1)); rot1 = vec_lvsl(1,(unsigned char*)0); zero = vec_splat_u8(0); one = vec_splat_u16(1); two = vec_splat_u16(2); if(rounding) { /* Load the first row 'manually' */ c00 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src)); c01 = vec_perm(c00,c00,rot1); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_ROUND(); } else { /* Load the first row 'manually' */ c00 = vec_perm(vec_ld(0,src),vec_ld(16,src),vec_lvsl(0,src)); c01 = vec_perm(c00,c00,rot1); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); INTERPOLATE8X8_HALFPEL_HV_ADD_NOROUND(); } }
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