2012-02-05 10:31:33 +00:00
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/*
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2010-06-29 06:42:17 +00:00
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* VP8 compatible video decoder
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*
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* Copyright (C) 2010 David Conrad
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2013-04-14 12:47:30 +00:00
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#include "config.h"
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2010-09-08 15:07:14 +00:00
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#include "libavutil/cpu.h"
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2012-08-06 13:49:32 +00:00
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#include "libavutil/mem.h"
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2012-05-21 20:24:42 +00:00
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#include "libavutil/ppc/types_altivec.h"
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#include "libavutil/ppc/util_altivec.h"
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2010-06-29 06:42:17 +00:00
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#include "libavcodec/vp8dsp.h"
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#include "dsputil_altivec.h"
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2013-04-14 12:47:30 +00:00
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#if HAVE_ALTIVEC
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2010-06-29 06:42:17 +00:00
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#define REPT4(...) { __VA_ARGS__, __VA_ARGS__, __VA_ARGS__, __VA_ARGS__ }
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// h subpel filter uses msum to multiply+add 4 pixel taps at once
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static const vec_s8 h_subpel_filters_inner[7] =
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{
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REPT4( -6, 123, 12, -1),
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REPT4(-11, 108, 36, -8),
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REPT4( -9, 93, 50, -6),
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REPT4(-16, 77, 77, -16),
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REPT4( -6, 50, 93, -9),
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REPT4( -8, 36, 108, -11),
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REPT4( -1, 12, 123, -6),
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};
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// for 6tap filters, these are the outer two taps
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// The zeros mask off pixels 4-7 when filtering 0-3
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// and vice-versa
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static const vec_s8 h_subpel_filters_outer[3] =
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{
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REPT4(0, 0, 2, 1),
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REPT4(0, 0, 3, 3),
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REPT4(0, 0, 1, 2),
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};
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#define LOAD_H_SUBPEL_FILTER(i) \
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vec_s8 filter_inner = h_subpel_filters_inner[i]; \
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vec_s8 filter_outerh = h_subpel_filters_outer[(i)>>1]; \
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vec_s8 filter_outerl = vec_sld(filter_outerh, filter_outerh, 2)
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#define FILTER_H(dstv, off) \
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2011-02-21 15:47:27 +00:00
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a = vec_ld((off)-is6tap-1, src); \
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b = vec_ld((off)-is6tap-1+15, src); \
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2010-06-29 06:42:17 +00:00
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\
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pixh = vec_perm(a, b, permh##off); \
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pixl = vec_perm(a, b, perml##off); \
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filth = vec_msum(filter_inner, pixh, c64); \
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filtl = vec_msum(filter_inner, pixl, c64); \
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\
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if (is6tap) { \
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outer = vec_perm(a, b, perm_6tap##off); \
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filth = vec_msum(filter_outerh, outer, filth); \
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filtl = vec_msum(filter_outerl, outer, filtl); \
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} \
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if (w == 4) \
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filtl = filth; /* discard pixels 4-7 */ \
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dstv = vec_packs(filth, filtl); \
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dstv = vec_sra(dstv, c7)
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static av_always_inline
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2012-03-02 05:17:03 +00:00
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void put_vp8_epel_h_altivec_core(uint8_t *dst, ptrdiff_t dst_stride,
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uint8_t *src, ptrdiff_t src_stride,
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2010-06-29 06:42:17 +00:00
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int h, int mx, int w, int is6tap)
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{
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LOAD_H_SUBPEL_FILTER(mx-1);
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vec_u8 align_vec0, align_vec8, permh0, permh8, filt;
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vec_u8 perm_6tap0, perm_6tap8, perml0, perml8;
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vec_u8 a, b, pixh, pixl, outer;
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vec_s16 f16h, f16l;
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vec_s32 filth, filtl;
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2011-02-21 15:47:27 +00:00
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vec_u8 perm_inner6 = { 1,2,3,4, 2,3,4,5, 3,4,5,6, 4,5,6,7 };
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vec_u8 perm_inner4 = { 0,1,2,3, 1,2,3,4, 2,3,4,5, 3,4,5,6 };
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vec_u8 perm_inner = is6tap ? perm_inner6 : perm_inner4;
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2010-06-29 06:42:17 +00:00
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vec_u8 perm_outer = { 4,9, 0,5, 5,10, 1,6, 6,11, 2,7, 7,12, 3,8 };
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vec_s32 c64 = vec_sl(vec_splat_s32(1), vec_splat_u32(6));
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vec_u16 c7 = vec_splat_u16(7);
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2011-02-21 15:47:27 +00:00
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align_vec0 = vec_lvsl( -is6tap-1, src);
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align_vec8 = vec_lvsl(8-is6tap-1, src);
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2010-06-29 06:42:17 +00:00
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permh0 = vec_perm(align_vec0, align_vec0, perm_inner);
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permh8 = vec_perm(align_vec8, align_vec8, perm_inner);
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perm_inner = vec_add(perm_inner, vec_splat_u8(4));
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perml0 = vec_perm(align_vec0, align_vec0, perm_inner);
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perml8 = vec_perm(align_vec8, align_vec8, perm_inner);
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perm_6tap0 = vec_perm(align_vec0, align_vec0, perm_outer);
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perm_6tap8 = vec_perm(align_vec8, align_vec8, perm_outer);
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while (h --> 0) {
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FILTER_H(f16h, 0);
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if (w == 16) {
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FILTER_H(f16l, 8);
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filt = vec_packsu(f16h, f16l);
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vec_st(filt, 0, dst);
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} else {
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filt = vec_packsu(f16h, f16h);
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vec_ste((vec_u32)filt, 0, (uint32_t*)dst);
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if (w == 8)
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vec_ste((vec_u32)filt, 4, (uint32_t*)dst);
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}
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src += src_stride;
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dst += dst_stride;
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}
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}
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// v subpel filter does a simple vertical multiply + add
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static const vec_u8 v_subpel_filters[7] =
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{
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{ 0, 6, 123, 12, 1, 0 },
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{ 2, 11, 108, 36, 8, 1 },
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{ 0, 9, 93, 50, 6, 0 },
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{ 3, 16, 77, 77, 16, 3 },
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{ 0, 6, 50, 93, 9, 0 },
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{ 1, 8, 36, 108, 11, 2 },
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{ 0, 1, 12, 123, 6, 0 },
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};
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#define LOAD_V_SUBPEL_FILTER(i) \
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vec_u8 subpel_filter = v_subpel_filters[i]; \
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vec_u8 f0 = vec_splat(subpel_filter, 0); \
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vec_u8 f1 = vec_splat(subpel_filter, 1); \
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vec_u8 f2 = vec_splat(subpel_filter, 2); \
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vec_u8 f3 = vec_splat(subpel_filter, 3); \
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vec_u8 f4 = vec_splat(subpel_filter, 4); \
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vec_u8 f5 = vec_splat(subpel_filter, 5)
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#define FILTER_V(dstv, vec_mul) \
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s1f = (vec_s16)vec_mul(s1, f1); \
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s2f = (vec_s16)vec_mul(s2, f2); \
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s3f = (vec_s16)vec_mul(s3, f3); \
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s4f = (vec_s16)vec_mul(s4, f4); \
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s2f = vec_subs(s2f, s1f); \
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s3f = vec_subs(s3f, s4f); \
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if (is6tap) { \
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s0f = (vec_s16)vec_mul(s0, f0); \
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s5f = (vec_s16)vec_mul(s5, f5); \
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s2f = vec_adds(s2f, s0f); \
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s3f = vec_adds(s3f, s5f); \
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} \
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dstv = vec_adds(s2f, s3f); \
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dstv = vec_adds(dstv, c64); \
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dstv = vec_sra(dstv, c7)
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static av_always_inline
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2012-03-02 05:17:03 +00:00
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void put_vp8_epel_v_altivec_core(uint8_t *dst, ptrdiff_t dst_stride,
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uint8_t *src, ptrdiff_t src_stride,
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2010-06-29 06:42:17 +00:00
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int h, int my, int w, int is6tap)
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{
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LOAD_V_SUBPEL_FILTER(my-1);
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vec_u8 s0, s1, s2, s3, s4, s5, filt, align_vech, perm_vec, align_vecl;
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vec_s16 s0f, s1f, s2f, s3f, s4f, s5f, f16h, f16l;
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vec_s16 c64 = vec_sl(vec_splat_s16(1), vec_splat_u16(6));
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vec_u16 c7 = vec_splat_u16(7);
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// we want pixels 0-7 to be in the even positions and 8-15 in the odd,
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// so combine this permute with the alignment permute vector
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align_vech = vec_lvsl(0, src);
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align_vecl = vec_sld(align_vech, align_vech, 8);
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if (w ==16)
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perm_vec = vec_mergeh(align_vech, align_vecl);
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else
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perm_vec = vec_mergeh(align_vech, align_vech);
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if (is6tap)
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s0 = load_with_perm_vec(-2*src_stride, src, perm_vec);
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s1 = load_with_perm_vec(-1*src_stride, src, perm_vec);
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s2 = load_with_perm_vec( 0*src_stride, src, perm_vec);
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s3 = load_with_perm_vec( 1*src_stride, src, perm_vec);
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if (is6tap)
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s4 = load_with_perm_vec( 2*src_stride, src, perm_vec);
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src += (2+is6tap)*src_stride;
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while (h --> 0) {
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if (is6tap)
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s5 = load_with_perm_vec(0, src, perm_vec);
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else
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s4 = load_with_perm_vec(0, src, perm_vec);
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FILTER_V(f16h, vec_mule);
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if (w == 16) {
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FILTER_V(f16l, vec_mulo);
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filt = vec_packsu(f16h, f16l);
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vec_st(filt, 0, dst);
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} else {
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filt = vec_packsu(f16h, f16h);
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if (w == 4)
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filt = (vec_u8)vec_splat((vec_u32)filt, 0);
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else
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vec_ste((vec_u32)filt, 4, (uint32_t*)dst);
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vec_ste((vec_u32)filt, 0, (uint32_t*)dst);
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}
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if (is6tap)
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s0 = s1;
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s1 = s2;
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s2 = s3;
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s3 = s4;
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if (is6tap)
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s4 = s5;
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dst += dst_stride;
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src += src_stride;
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}
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}
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#define EPEL_FUNCS(WIDTH, TAPS) \
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static av_noinline \
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2012-03-02 05:17:03 +00:00
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void put_vp8_epel ## WIDTH ## _h ## TAPS ## _altivec(uint8_t *dst, ptrdiff_t dst_stride, uint8_t *src, ptrdiff_t src_stride, int h, int mx, int my) \
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2010-06-29 06:42:17 +00:00
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{ \
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put_vp8_epel_h_altivec_core(dst, dst_stride, src, src_stride, h, mx, WIDTH, TAPS == 6); \
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} \
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\
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static av_noinline \
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2012-03-02 05:17:03 +00:00
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void put_vp8_epel ## WIDTH ## _v ## TAPS ## _altivec(uint8_t *dst, ptrdiff_t dst_stride, uint8_t *src, ptrdiff_t src_stride, int h, int mx, int my) \
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2010-06-29 06:42:17 +00:00
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{ \
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put_vp8_epel_v_altivec_core(dst, dst_stride, src, src_stride, h, my, WIDTH, TAPS == 6); \
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}
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#define EPEL_HV(WIDTH, HTAPS, VTAPS) \
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2013-09-23 00:18:58 +00:00
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static void put_vp8_epel ## WIDTH ## _h ## HTAPS ## v ## VTAPS ## _altivec(uint8_t *dst, ptrdiff_t dstride, uint8_t *src, ptrdiff_t sstride, int h, int mx, int my) \
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2010-06-29 06:42:17 +00:00
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{ \
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DECLARE_ALIGNED(16, uint8_t, tmp)[(2*WIDTH+5)*16]; \
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2011-02-21 15:47:27 +00:00
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if (VTAPS == 6) { \
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2013-09-23 00:18:58 +00:00
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put_vp8_epel ## WIDTH ## _h ## HTAPS ## _altivec(tmp, 16, src-2*sstride, sstride, h+5, mx, my); \
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put_vp8_epel ## WIDTH ## _v ## VTAPS ## _altivec(dst, dstride, tmp+2*16, 16, h, mx, my); \
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2011-02-21 15:47:27 +00:00
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} else { \
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2013-09-23 00:18:58 +00:00
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put_vp8_epel ## WIDTH ## _h ## HTAPS ## _altivec(tmp, 16, src-sstride, sstride, h+4, mx, my); \
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put_vp8_epel ## WIDTH ## _v ## VTAPS ## _altivec(dst, dstride, tmp+16, 16, h, mx, my); \
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2011-02-21 15:47:27 +00:00
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} \
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2010-06-29 06:42:17 +00:00
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}
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EPEL_FUNCS(16,6)
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EPEL_FUNCS(8, 6)
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EPEL_FUNCS(8, 4)
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EPEL_FUNCS(4, 6)
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EPEL_FUNCS(4, 4)
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EPEL_HV(16, 6,6)
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EPEL_HV(8, 6,6)
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EPEL_HV(8, 4,6)
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EPEL_HV(8, 6,4)
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EPEL_HV(8, 4,4)
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EPEL_HV(4, 6,6)
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EPEL_HV(4, 4,6)
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EPEL_HV(4, 6,4)
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EPEL_HV(4, 4,4)
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2013-09-23 00:18:58 +00:00
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static void put_vp8_pixels16_altivec(uint8_t *dst, ptrdiff_t dstride, uint8_t *src, ptrdiff_t sstride, int h, int mx, int my)
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2010-06-29 06:42:17 +00:00
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{
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2013-09-23 00:18:58 +00:00
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register vector unsigned char pixelsv1, pixelsv2;
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register vector unsigned char pixelsv1B, pixelsv2B;
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register vector unsigned char pixelsv1C, pixelsv2C;
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register vector unsigned char pixelsv1D, pixelsv2D;
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register vector unsigned char perm = vec_lvsl(0, src);
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int i;
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register ptrdiff_t dstride2 = dstride << 1, sstride2 = sstride << 1;
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register ptrdiff_t dstride3 = dstride2 + dstride, sstride3 = sstride + sstride2;
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register ptrdiff_t dstride4 = dstride << 2, sstride4 = sstride << 2;
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// hand-unrolling the loop by 4 gains about 15%
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// mininum execution time goes from 74 to 60 cycles
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// it's faster than -funroll-loops, but using
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// -funroll-loops w/ this is bad - 74 cycles again.
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// all this is on a 7450, tuning for the 7450
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for (i = 0; i < h; i += 4) {
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pixelsv1 = vec_ld( 0, src);
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pixelsv2 = vec_ld(15, src);
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pixelsv1B = vec_ld(sstride, src);
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pixelsv2B = vec_ld(15 + sstride, src);
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pixelsv1C = vec_ld(sstride2, src);
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pixelsv2C = vec_ld(15 + sstride2, src);
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pixelsv1D = vec_ld(sstride3, src);
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pixelsv2D = vec_ld(15 + sstride3, src);
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vec_st(vec_perm(pixelsv1, pixelsv2, perm),
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0, (unsigned char*)dst);
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vec_st(vec_perm(pixelsv1B, pixelsv2B, perm),
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dstride, (unsigned char*)dst);
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vec_st(vec_perm(pixelsv1C, pixelsv2C, perm),
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dstride2, (unsigned char*)dst);
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vec_st(vec_perm(pixelsv1D, pixelsv2D, perm),
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dstride3, (unsigned char*)dst);
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src += sstride4;
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dst += dstride4;
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}
|
2010-06-29 06:42:17 +00:00
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}
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2013-04-14 12:47:30 +00:00
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|
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#endif /* HAVE_ALTIVEC */
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|
|
av_cold void ff_vp8dsp_init_ppc(VP8DSPContext *c)
|
2010-06-29 06:42:17 +00:00
|
|
|
{
|
2013-04-14 12:47:30 +00:00
|
|
|
#if HAVE_ALTIVEC
|
2010-09-08 15:07:14 +00:00
|
|
|
if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
|
2010-06-29 06:42:17 +00:00
|
|
|
return;
|
|
|
|
|
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c->put_vp8_epel_pixels_tab[0][0][0] = put_vp8_pixels16_altivec;
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c->put_vp8_epel_pixels_tab[0][0][2] = put_vp8_epel16_h6_altivec;
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|
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c->put_vp8_epel_pixels_tab[0][2][0] = put_vp8_epel16_v6_altivec;
|
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|
|
c->put_vp8_epel_pixels_tab[0][2][2] = put_vp8_epel16_h6v6_altivec;
|
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|
|
|
|
|
|
c->put_vp8_epel_pixels_tab[1][0][2] = put_vp8_epel8_h6_altivec;
|
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|
|
c->put_vp8_epel_pixels_tab[1][2][0] = put_vp8_epel8_v6_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[1][0][1] = put_vp8_epel8_h4_altivec;
|
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|
|
c->put_vp8_epel_pixels_tab[1][1][0] = put_vp8_epel8_v4_altivec;
|
|
|
|
|
|
|
|
c->put_vp8_epel_pixels_tab[1][2][2] = put_vp8_epel8_h6v6_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[1][1][1] = put_vp8_epel8_h4v4_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[1][1][2] = put_vp8_epel8_h6v4_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[1][2][1] = put_vp8_epel8_h4v6_altivec;
|
|
|
|
|
|
|
|
c->put_vp8_epel_pixels_tab[2][0][2] = put_vp8_epel4_h6_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][2][0] = put_vp8_epel4_v6_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][0][1] = put_vp8_epel4_h4_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][1][0] = put_vp8_epel4_v4_altivec;
|
|
|
|
|
|
|
|
c->put_vp8_epel_pixels_tab[2][2][2] = put_vp8_epel4_h6v6_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][1][1] = put_vp8_epel4_h4v4_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][1][2] = put_vp8_epel4_h6v4_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][2][1] = put_vp8_epel4_h4v6_altivec;
|
2013-04-14 12:47:30 +00:00
|
|
|
#endif /* HAVE_ALTIVEC */
|
2010-06-29 06:42:17 +00:00
|
|
|
}
|