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ffmpeg / libavcodec / x86 / dnxhd_mmx.c @ 2912e87a

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/*
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 * VC3/DNxHD SIMD functions
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 * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
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 *
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 * VC-3 encoder funded by the British Broadcasting Corporation
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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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#include "libavutil/x86_cpu.h"
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#include "libavcodec/dnxhdenc.h"
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static void get_pixels_8x4_sym_sse2(DCTELEM *block, const uint8_t *pixels, int line_size)
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{
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    __asm__ volatile(
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        "pxor %%xmm5,      %%xmm5       \n\t"
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        "movq (%0),        %%xmm0       \n\t"
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        "add  %2,          %0           \n\t"
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        "movq (%0),        %%xmm1       \n\t"
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        "movq (%0, %2),    %%xmm2       \n\t"
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        "movq (%0, %2,2),  %%xmm3       \n\t"
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        "punpcklbw %%xmm5, %%xmm0       \n\t"
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        "punpcklbw %%xmm5, %%xmm1       \n\t"
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        "punpcklbw %%xmm5, %%xmm2       \n\t"
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        "punpcklbw %%xmm5, %%xmm3       \n\t"
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        "movdqa %%xmm0,      (%1)       \n\t"
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        "movdqa %%xmm1,    16(%1)       \n\t"
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        "movdqa %%xmm2,    32(%1)       \n\t"
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        "movdqa %%xmm3,    48(%1)       \n\t"
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        "movdqa %%xmm3 ,   64(%1)       \n\t"
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        "movdqa %%xmm2 ,   80(%1)       \n\t"
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        "movdqa %%xmm1 ,   96(%1)       \n\t"
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        "movdqa %%xmm0,   112(%1)       \n\t"
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        : "+r" (pixels)
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        : "r" (block), "r" ((x86_reg)line_size)
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    );
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}
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void ff_dnxhd_init_mmx(DNXHDEncContext *ctx)
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{
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    if (av_get_cpu_flags() & AV_CPU_FLAG_SSE2) {
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        ctx->get_pixels_8x4_sym = get_pixels_8x4_sym_sse2;
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    }
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}