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e5c9de2ab7
Provide MMX, SSE2 and SSSE3 versions, with a fast-path when the weights are multiples of 512 (which is often the case when the values round up nicely). *_TIMER report for the 16x16 and 8x8 cases: C: 9015 decicycles in 16, 524257 runs, 31 skips 2656 decicycles in 8, 524271 runs, 17 skips MMX: 4156 decicycles in 16, 262090 runs, 54 skips 1206 decicycles in 8, 262131 runs, 13 skips MMX on fast-path: 2760 decicycles in 16, 524222 runs, 66 skips 995 decicycles in 8, 524252 runs, 36 skips SSE2: 2163 decicycles in 16, 262131 runs, 13 skips 832 decicycles in 8, 262137 runs, 7 skips SSE2 with fast path: 1783 decicycles in 16, 524276 runs, 12 skips 711 decicycles in 8, 524283 runs, 5 skips SSSE3: 2117 decicycles in 16, 262136 runs, 8 skips 814 decicycles in 8, 262143 runs, 1 skips SSSE3 with fast path: 1315 decicycles in 16, 524285 runs, 3 skips 578 decicycles in 8, 524286 runs, 2 skips This means around a 4% speedup for some sequences. Signed-off-by: Diego Biurrun <diego@biurrun.de>
80 lines
3.2 KiB
C
80 lines
3.2 KiB
C
/*
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* RV40 decoder motion compensation functions x86-optimised
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* Copyright (c) 2008 Konstantin Shishkov
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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/**
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* @file
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* RV40 decoder motion compensation functions x86-optimised
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*/
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#include "libavcodec/rv34dsp.h"
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void ff_put_rv40_chroma_mc8_mmx (uint8_t *dst, uint8_t *src,
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int stride, int h, int x, int y);
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void ff_avg_rv40_chroma_mc8_mmx2 (uint8_t *dst, uint8_t *src,
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int stride, int h, int x, int y);
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void ff_avg_rv40_chroma_mc8_3dnow(uint8_t *dst, uint8_t *src,
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int stride, int h, int x, int y);
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void ff_put_rv40_chroma_mc4_mmx (uint8_t *dst, uint8_t *src,
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int stride, int h, int x, int y);
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void ff_avg_rv40_chroma_mc4_mmx2 (uint8_t *dst, uint8_t *src,
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int stride, int h, int x, int y);
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void ff_avg_rv40_chroma_mc4_3dnow(uint8_t *dst, uint8_t *src,
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int stride, int h, int x, int y);
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#define DECLARE_WEIGHT(opt) \
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void ff_rv40_weight_func_16_##opt(uint8_t *dst, uint8_t *src1, uint8_t *src2, \
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int w1, int w2, int stride); \
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void ff_rv40_weight_func_8_##opt (uint8_t *dst, uint8_t *src1, uint8_t *src2, \
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int w1, int w2, int stride);
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DECLARE_WEIGHT(mmx)
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DECLARE_WEIGHT(sse2)
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DECLARE_WEIGHT(ssse3)
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void ff_rv40dsp_init_x86(RV34DSPContext *c, DSPContext *dsp)
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{
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#if HAVE_YASM
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int mm_flags = av_get_cpu_flags();
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if (mm_flags & AV_CPU_FLAG_MMX) {
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c->put_chroma_pixels_tab[0] = ff_put_rv40_chroma_mc8_mmx;
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c->put_chroma_pixels_tab[1] = ff_put_rv40_chroma_mc4_mmx;
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c->rv40_weight_pixels_tab[0] = ff_rv40_weight_func_16_mmx;
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c->rv40_weight_pixels_tab[1] = ff_rv40_weight_func_8_mmx;
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}
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if (mm_flags & AV_CPU_FLAG_MMX2) {
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c->avg_chroma_pixels_tab[0] = ff_avg_rv40_chroma_mc8_mmx2;
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c->avg_chroma_pixels_tab[1] = ff_avg_rv40_chroma_mc4_mmx2;
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} else if (mm_flags & AV_CPU_FLAG_3DNOW) {
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c->avg_chroma_pixels_tab[0] = ff_avg_rv40_chroma_mc8_3dnow;
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c->avg_chroma_pixels_tab[1] = ff_avg_rv40_chroma_mc4_3dnow;
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}
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if (mm_flags & AV_CPU_FLAG_SSE2) {
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c->rv40_weight_pixels_tab[0] = ff_rv40_weight_func_16_sse2;
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c->rv40_weight_pixels_tab[1] = ff_rv40_weight_func_8_sse2;
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}
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if (mm_flags & AV_CPU_FLAG_SSSE3) {
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c->rv40_weight_pixels_tab[0] = ff_rv40_weight_func_16_ssse3;
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c->rv40_weight_pixels_tab[1] = ff_rv40_weight_func_8_ssse3;
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}
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#endif
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}
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