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60 lines
2.1 KiB
60 lines
2.1 KiB
/* |
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* Copyright (c) 2012-2014 Christophe Gisquet <christophe.gisquet@gmail.com> |
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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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#ifndef AVCODEC_X86_DCA_H |
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#define AVCODEC_X86_DCA_H |
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#include "config.h" |
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#if ARCH_X86_64 && HAVE_SSE2_INLINE |
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# include "libavutil/x86/asm.h" |
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# include "libavutil/mem.h" |
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#include "libavcodec/dcadsp.h" |
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# define int8x8_fmul_int32 int8x8_fmul_int32 |
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static inline void int8x8_fmul_int32(av_unused DCADSPContext *dsp, |
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float *dst, const int8_t *src, int scale) |
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{ |
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DECLARE_ALIGNED(16, static const uint32_t, inverse16) = 0x3D800000; |
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__asm__ volatile ( |
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"cvtsi2ss %2, %%xmm0 \n\t" |
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"mulss %3, %%xmm0 \n\t" |
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"movq (%1), %%xmm1 \n\t" |
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"punpcklbw %%xmm1, %%xmm1 \n\t" |
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"movaps %%xmm1, %%xmm2 \n\t" |
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"punpcklwd %%xmm1, %%xmm1 \n\t" |
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"punpckhwd %%xmm2, %%xmm2 \n\t" |
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"psrad $24, %%xmm1 \n\t" |
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"psrad $24, %%xmm2 \n\t" |
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"shufps $0, %%xmm0, %%xmm0 \n\t" |
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"cvtdq2ps %%xmm1, %%xmm1 \n\t" |
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"cvtdq2ps %%xmm2, %%xmm2 \n\t" |
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"mulps %%xmm0, %%xmm1 \n\t" |
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"mulps %%xmm0, %%xmm2 \n\t" |
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"movaps %%xmm1, 0(%0) \n\t" |
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"movaps %%xmm2, 16(%0) \n\t" |
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:: "r"(dst), "r"(src), "m"(scale), "m"(inverse16) |
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XMM_CLOBBERS_ONLY("xmm0", "xmm1", "xmm2") |
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); |
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} |
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#endif /* ARCH_X86_64 && HAVE_SSE2_INLINE */ |
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#endif /* AVCODEC_X86_DCA_H */
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