| /* |
| * 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 |
| */ |
| |
| #ifndef AVCODEC_X86_DCA_H |
| #define AVCODEC_X86_DCA_H |
| |
| #include "config.h" |
| |
| #if ARCH_X86_64 && HAVE_SSE2_INLINE |
| # include "libavutil/x86/asm.h" |
| # include "libavutil/mem.h" |
| #include "libavcodec/dcadsp.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 && HAVE_SSE2_INLINE */ |
| |
| #endif /* AVCODEC_X86_DCA_H */ |