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ae5314a6bf
With this commit, the RV30 and RV40 decoders no longer clobber the fpu state for normal decoding (only error resilience can still do so). rv34_idct_add_c: 58.1 ( 1.00x) rv34_idct_add_mmxext: 16.5 ( 3.52x) rv34_idct_add_ssse3: 12.2 ( 4.76x) Reviewed-by: Lynne <dev@lynne.ee> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/*
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* RV30/40 ASM optimizations
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* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
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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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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/rv34dsp.h"
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void ff_rv34_idct_dc_noround_sse2(int16_t *block);
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void ff_rv34_idct_dc_add_sse2(uint8_t *dst, ptrdiff_t stride, int dc);
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void ff_rv34_idct_dc_add_sse4(uint8_t *dst, ptrdiff_t stride, int dc);
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void ff_rv34_idct_add_ssse3(uint8_t *dst, ptrdiff_t stride, int16_t *block);
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av_cold void ff_rv34dsp_init_x86(RV34DSPContext* c)
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{
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_SSE2(cpu_flags)) {
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c->rv34_inv_transform_dc = ff_rv34_idct_dc_noround_sse2;
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c->rv34_idct_dc_add = ff_rv34_idct_dc_add_sse2;
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}
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if (EXTERNAL_SSSE3(cpu_flags)) {
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c->rv34_idct_add = ff_rv34_idct_add_ssse3;
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}
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if (EXTERNAL_SSE4(cpu_flags))
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c->rv34_idct_dc_add = ff_rv34_idct_dc_add_sse4;
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}
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