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https://github.com/FFmpeg/FFmpeg.git
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60 lines
2.2 KiB
C
60 lines
2.2 KiB
C
/*
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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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if (ctx->cid_table->bit_depth == 8)
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ctx->get_pixels_8x4_sym = get_pixels_8x4_sym_sse2;
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}
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}
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