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/*
* Copyright (c) 2012-2014 Christophe Gisquet <christophe.gisquet@gmail.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if ARCH_X86_64
# include "libavutil/x86/asm.h"
# include "libavutil/mem.h"
# define int8x8_fmul_int32 int8x8_fmul_int32
static inline void int8x8_fmul_int32(av_unused DCADSPContext *dsp,
float *dst, const int8_t *src, int scale)
{
DECLARE_ALIGNED(16, static const uint32_t, inverse16) = 0x3D800000;
__asm__ volatile (
"cvtsi2ss %2, %%xmm0 \n\t"
"mulss %3, %%xmm0 \n\t"
"movq (%1), %%xmm1 \n\t"
"punpcklbw %%xmm1, %%xmm1 \n\t"
"movaps %%xmm1, %%xmm2 \n\t"
"punpcklwd %%xmm1, %%xmm1 \n\t"
"punpckhwd %%xmm2, %%xmm2 \n\t"
"psrad $24, %%xmm1 \n\t"
"psrad $24, %%xmm2 \n\t"
"shufps $0, %%xmm0, %%xmm0 \n\t"
"cvtdq2ps %%xmm1, %%xmm1 \n\t"
"cvtdq2ps %%xmm2, %%xmm2 \n\t"
"mulps %%xmm0, %%xmm1 \n\t"
"mulps %%xmm0, %%xmm2 \n\t"
"movaps %%xmm1, 0(%0) \n\t"
"movaps %%xmm2, 16(%0) \n\t"
:: "r"(dst), "r"(src), "m"(scale), "m"(inverse16)
XMM_CLOBBERS_ONLY("xmm0", "xmm1", "xmm2")
);
}
#endif /* ARCH_X86_64 */
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